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' I re.~ \ ''\- . =-0 -t •. r ---------'"'"-' -----------------------------------------, '' ii: : ' !· ----·------=-------------------------------------- ::, ---------.""---------------'------------------------------1 ;:: !11 -------~----------------------------------------- --------------------------------------------------- ----------~~---·------------------------------------------- King County Department of Devdnpmem and Environmental Services Land Use Services Division 900 Oakesdale A venue Southwest Renton, Washington 98055-1219 Plat Screening Transmittal Preliminary Plat Application of Soos Creek LUSD File No. L04P0002 Date of Information Request: March 17, 2004 Deadline for Submittal of Information: June 21, 2004 Please provide ten (10) copies of the following, unless otherwise noted. Note, the following items are in addition to the information requested for complete application (see February 27, 2004 letter). Recreation Space: Submit a conceptual recreation plan that indicates the type of improvements (i.e. sport court, play structure, benches, landscaping, etc.) proposed within the recreation tract(s). See KCC 21A.14.180 E2 for equipment requirements. Walkways: Provide an inventory map (i.e. existing conditions -widths, surface type, etc.) of the walking routes to the elementary, junior high/middle and high school and/or the appropriate bus stop location associated with each school. Identify any improvements necessary to provide safe walking conditions. Letter(s) of intent: Provide a letter(s) of intent from King County Parks and other affected property owners' indicating the willingess to dedicate the necessary right-of-way and construction of 1241 h Avenue SE as well as additional improvements within the park (i.e.the walkway, landscaping and drainage facilities). If these letters cannot be obtained, the plat must be redesigned. Field Survey: Provide a copy of the base topographic map stamped by a licensed surveyor in the State of Washington. Utilities/Sewer Line: The proposed construction of sewer line(s) through the wetland is not a permitted alteration under KCC 21A.24. Provide an alternative route or method of construction (i.e. boring) or submit for a reasonable use exception application (RUE) if this is proposed to be constructed by the developer or a PAUE if construction proposed by the utility district Wetland Study: Submit a study prepared by a qualified biologist which delineates the wetland boundary, provides classification, buffer width{s), and proposed mitigation if impacts to the wetland and/or buffer are proposed (i.e. road crossing). Geotechnical Study: Provide a geotechnical study which evaluates the areas of slopes that are 40% or greater and exceed 20 feet in height as these areas will be required to be placed in sensitive area tract(s). In addition, the report shall provide recommendations regarding the buffers, building setback lines (bsbl) as well as recommendations related to the construction of the roads, lots and as necessary, the drainage facilities. Conceptual Grading Plan: Provide a conceptual grading plan for the lots and roads and indicate areas of rockeries and/or proposed retaining walls and preliminary heights. Note, depending upon the height of proposed rockeries and walls, additional setbacks and/or review may be necessary. BPA: Provide a letter of intent from SPA regarding the placement of the drainage facilities, and road improvements proposed within the easement as well as the ability to dedicate the drainage tract and additional right-of-way as necessary Regional Utility Corridor: Per KCC 21A.12. 140 regional utility corridors shall be contained in separate tract(s). Please revise the plat to place the utility easement(s) in separate tract(s). This may result in the reconfiguration and/or loss of lots. Drainage: The following information must be prepared and stamped by a civil engineer licensed in the State of Washington. Soos Creek Plat -L04P0002 01/04 • Revise the Level 1 drainage analysis and complaint investigation pursuant to the 1998 Surface Water Design Manual. Please include complaint investigation for a distance of 1 mile downstream per the manual. Actual copies of the relevant complaints should be included. Drainage complaints can be obtained by calling KC Water and Land at 206-296-1900. Any complaints should be reviewed and classified Type 1,2, or 3 problems per Core Requirement 2 of the KCSWDM. Provide narrative in the level 1 analysis describing the appropriate proposed mitigation for downstream complaints. Please note that our field review found active erosion and sliding in the downstream ravine and potential access flooding at the base of the ravine. • Revise the Level 1 drainage analysis to include a detailed description/analysis of the proposed drainage system. This must indicate how the proposal meets and/or exceeds the requirements of the King County Surface Water Design Manual, including flow control and water quality standards. • Submit a revised conceptual drainage plan which includes details of the proposed drainage system, including size of pond, conveyance, etc. • Submit a geotechnical study which evaluates the feasibility of infiltration on the site. This study should include depth to seasonal high ground water. • Adjustment -Diversion ? Roads: • Please provide a Level One traffic impact analysis, prepared by a licensed engineer with expertise in traffic engineering, that expands the limited scope traffic analysis (turn lane and sight distance) assessment previously submitted. • Please provide a conceptual (to scale) intersection improvement plan for the intersection of 124th Avenue SE/Southeast 192nd Street, based upon an actual survey of pavement edges, proposed curb lines, channelization, etc. Demonstrate alignment of the proposed improvements with the existing improvements to the south on 124th Avenue SE, (b) provide a conceptual revision of either the north or south leg to eliminate any offset, or (c) apply for --and receive approval of --a Variance to the KCRS for the construction centerline-to- construction centerline offset. • Please revise the plat plan to eliminate the angle point in the horizontal alignment of the proposed plat street and substitute a "low speed" horizontal curve per the KCRS. The revision may result in other modifications and comments to the plat. This appears, at least, to result in the P.A.T.s exceeding the ·1-5' criteria for centerline angle off perpendicularity. • Please provide a preliminary centerline profile for the proposed plat street, west of 124th Avenue SE • Please provide additional information, specifically curve data, for the centerline alignment of the overall plat street system: 124'h Avenue SE extension and SE 191'' Court. Significant Tree Plan: Please submit a significant tree plan and retention plan per S0-220, which shows the location of the existing significant trees and a conceptual proposal which indicates which trees are to be retained and/or removed and the area to be replanted. Revised Preliminary Plat: Provide 25 copies of a revised preliminary plat, as necessary, as a result of above- referenced requests for additional information as well as number all lots and provide clear delineation between property lines, lot lines, tracts, right-of-way, etc. As a result of the review of the information, additional information (studies, revisions, etc.) may be requested at a later date. Further evaluation of these issues may result in the reconfiguration and/or loss of lots. Soos Creek Plat -L04P0002 O'.'l.ln4 " " " WE'l'l.AND WU' .Plt8 SQ T'~E'f' {fa? ··t~/ ,, .. £. f .:f.P .;;..>' <if' ,.~.~·,·::~· ~ I(' ;i ;:; _j/> N i f·" f f h ; 1: d! t 'r \ A16 \ \ .A.15 \ \ \, SP$: " \:{ "\ ·: \\\ A14 Al> tLJ\ \\ . -i\ \ S·: \ , ·~ SP4 ; \ \ (\ ': I m : :\ ',_)_ \ ; \ \ ' ; \ \ : \ <j} ~. -~; < CURVE TABLE CURVE LENGTH RADIUS C6 146.85 92.50 C7 79.09 87.50 ca 251.78 102.50 C9 6.30 20.00 C10 32.70 32.00 C11 61.81 92.50 C12 58.97 87.50 1gl.,J~l\~ ·,1 \ "'~;,\\ \ A10 ~w-\ \ \ ~-0s C ~k-G) te,--l A.~rr ~ Lo~ Pot1o"L q J is/ d/ )I }%~f«'~1~"~ .// 1 ;:~ ,: N ::-~ \, --. ::i' i;t ,,:: \ AB\ \ \ ~· 3:-.:._f AA \ ~ -~! , :\ SF?3.·-,, '; ,~ ;.,),·~';'\\~--~·::~ .t!.i:{'.··.:::;::_; .1·:,~:1 A2 SP1 \ ---<.;:.,: . .!/ ~:;-c31 1 __ ...,,....___'__J {c) r , . ', ~,~. ' . ' ' 1 /-fLi1) ,;.:.,, \ : 1'.J 1' I[[!] __ ·1 1,-1-j ' ·:~:__J ® · King County Department of Development and Environmental Services 900 Oakesdale Avenue SW Renton, WA 98055-1219 February 27, 2004 Rick Boston Boston Design and Development LLC 13425 E. Lake Kathleen Drive SE Renton, WA 98059 RE: Notice of Incomplete Application Application No. L04P0002 -Soos Creek Plat Filed on February 4, 2004 Dear Mr. Boston: The purpose of this letter is to notify you that on February 27, 2004, the Land Use Services Division determined that the above-referenced application is incomplete under the current requirements for a complete application as specified in King County Code 19A. and King County Code 20. This initial determination is intended and is used only for the purposes of applying the lime period established in this Ordinance. The following information is needed for this application to be considered complete. • Complete and submit the application for Land Use Permits, as page 2 was not completed • Verify on the plat map and/or topographic map that the contours are based upon an actual field survey • Include Parcel A in its entirety on the preliminary plat map or remove this parcel and submit revised information as necessary • Please revise the Level 1 Off-site Analysis to include complaint investigation per Core Requirement 2 of the 1998 King County Surface Water Design Manual (KCSWDM). Evaluate drainage complaints within 1 mile in the downstream drainage course. Copies of the relevant complaints must be included in the Level 1 Analysis. The drainage complaints can be obtained by calling Department of Natural Resources at 206-296-1900. • Resubmit page 16 of the environmental checklist, as it is difficult to read. Land Use Services Division will keep your application "on hold" pending receipt of the above information, during which time no further review will take place. Pursuant to King County Code, if the requested information is not received by June 7, 2004, your application will be canceled. No time extensions will be granted. Should the application be canceled, you will be required to submit a new application. If you have any questions about the information requested, please call me at 206-296-7167. ~rely, ~/!.~,11 cc: Jacques Consulting Greg Borba, Supervisor, Current Planning Section, Land Use Services Division Bruce Whittaker, Senior Engineer, Engineering Review Section Application file ,-~-- -~;· .. :.( ~ -~ ~-of Development and Ellvlrolllnemal Services Land Use Se1vices DMskiii 900 C>ake$dale Avenue Soulh\V8$1 Renton, wa&hlngton 98055-1219 {206) 296-6600 TTY {206) 296-7217 Alternative formats available . upon request Drop-Off Cover Sheet for Land Use Services Division *"*****HAAHJiUU*****i*** IMPORTANT *-*H*****HfHH:*****,.*******• PROJECT NUMBER AND NAME IS NECESSARY FOR ALL DROP-OFFS Project No.: Is o J P 6 L ¥ f,. ProjectName: 5c,0S C(2~K. f'~ FROM: @.\C. K 'IS..:::. "::,,,-o.J Company Name/ Contact Person Telephone No.: .2pc;. -7.rr -/i. /7 TO: M Cl< ti( lt. tf.J 1 ~ teu<;, (; <,J <,/ t JTP,CR'<') /Ctn · CU,,4,5'_5 <:"-,-.; Date Received by LUSD_ In'\ !6) ~~II',\'\#~ il1 \nl rEB O 6 2004 K.C. o.o.E.S. ADDITIONAL INFORMATION REQUESTED BY KING COUNTY STAFF (please print) Short Plat / Plats Please specify item(s) dropped--0ff: Lot Line Adjustment Permit Please specify item(s) dropped--0ff: Right of Way Permit Please specify item(s) dropped-Off: Clearing/ Grading Permit Additional information requested; please specify item(s) dropped-Off: Other:------------------~------------------ PLEASE NOTE: All drop--0ff item(s) will be logged into the computer under the project number, therefore, it is important that the top portion of this form is completed properly before you· drop-Off anything. Assistance in finding a project number can be provided by speaking to a Land Use Services Division Person of the Day (POD) or the Zoning/Land Use Technician. Your cooperation is important. Thank you. LUSD Drop-Off Cover Sheet lg-cvs-dropoff.pdf 05-30-2002 Page 1 of 1 ' . ' 'l Whittaker, Bruce From: Claussen, Kimberly Sent: To: Tuesday, February 24, 2004 11 :27 AM Whittaker, Bruce Subject: FW: Soos Creek Plat L04P0002 fyi -----Original Message----- From: Foley, Steve Sent: Tuesday, February 24, 2004 11:26 AM To: Claussen, Kimberly; Whittaker, Bruce Subject: Soos Creek Plat L04P0002 Another comment. -----Original Message----- From: Kahan, Josh Sent: Thursday, February 19, 2004 5:07 PM To: Foley, Steve Subject: RE: 7 acres, 35 lots, Soos Creek Hi Steve. 1 wanted to provide one other comment. There are beavers throughout the Soos Creek system. Any adjacent development should consider the potential for flood levels to fluctuate in the future. 1 ,. , ® King County Department of Development and Environmental Services 900 Oakesdale Avenue SW Renton, WA 98055-1219 LAND USE SERVICES DIVISION ROUTING/ TRANSMITTAL FORM February 17, 2004 TO: Kim Claussen, Planner III, Current Planning Section FM: Ray Floren!, Engineer III, Engineering Review Section " /", /)( Steve Van Patten, PLS Engineer II ~ U RE: Proposed Plat of SOOS CREEK LUSD File No. L04P0002 We have concluded our preliminary review of the boundary and survey issues for the proposed plat and include our findings as follows: 1. Parcel A is not shown in its entirety on the preliminary map. Add the missing portion of Parcel A to the map --identified approximately as the southerly 300 feet of Lot 2 of King County Short Plat No. 388021. Also include the Joint Use Driveway easement shown on said Short Plat. 2. The applicant should work with the adjoining property owners along the Southwesterly and Northwesterly boundary lines to resolve the fence encroachments to the satisfaction of King County D.D.E.S., prior to final plat approval. 3. The existing house straddling the South line of Parcel B should be labeled "To Be Removed". 4. Additional survey control and survey procedure may be requested and reviewed at time of final plat approval, including issues pertaining to Horizontal control per KCC l 9A.08. ! 30, and including issues of proration and fit to road centerline monumentation from previous record. 5. Per Plat Certificte no. 1125308, please work with the Title Company and correct the word "Northern" to "Northwestern" in the legal description for Parcel A. Also please have the title company confirm the verbiage "other property 90" contained in Parcel C, as it doesn't make sense. Please revise the legals on the preliminary map accordingly. 6. Please make the following changes to the legal on the preliminary map: a) correct the short plat number to 388021 in Parcel A b) revise the order no.s to 1125308 7. Add the off-site cul-de-sac located in Lot 2 of Short Plat 278113 under recording no. 7808281028. r 8. Pursuant to KCC 19A.08.150, add a statement to the preliminary plan or topographic map that the contours are based on an actual field survey. 9. KCC 19A.08.150 requires two temporary bench marks to be shown on the preliminary plan or topographic map. Please add one more for a total of two. I 0. Pursuant to KCC 19A.08. 130, the vertical datum should be NAVD 88. Please revise the NGVD 29 elevations to NA VD 88 and reference the parent benchmark used on the plans, unless the requirements ofKCC 19A.08.130 regarding the allowable use of an alternative vertical datum applies --in which case add a note to the plan stating that an alternative vertical datum was used pursuant to the criteria contained in KCC 19A.08.130. 11. Pursuant to KCC 19A.08.150, show the locations of all the easements indicated in the short plat certificate. Most of them are probably already shown on the preliminary map, but should be labeled. The following exceptions to the plat certificate no. 1125308 should be addressed: a) Exception no. I -show easement under recording no. 3178820. b) Exception no. 2 -show easement under recording no. 6313654. c) Exception no. 3 -show 30' easement per recording no. 7403180427. d) Exception no. 4 -show 30' easement per recording no. 7808090599. e) Exception no. 6-show easement per recording no. 19991123000332. f) Exception no. IO-show the well location per recording no. 8510220769. g) exception no. 11 -verify with the Title company that recording no 8510220770 applies to exception no. 11, and show the well restriction per said recording no. iflocatable. h) Exception no 12-verify if this document contains easements that are locatable. I 2. The following may be issues: a) 12 foot wide sidewalk is proposed off-site, within an area labeled "King County Boulevard Lane Park". Cc: Bruce Whittaker • • ® King County Department of Development and Environmental Services 900 Oakesdale Avenue SW Renton, WA 98055-1219 March 17, 2004 Rick Boston Boston Design and Development LLC 14225 E. Lake Kathleen Drive Southeast Renton, WA 98059 RE: Permit Fee Estimate -Proposed Preliminary Plat of Soos Creek File Number: L04P0002 Dear Mr. Boston: Beginning January 2, 2004, our office implemented a new program for managing certain types of permit applications to provide customers with an enhanced level of customer service. The Project Manager Program seeks to provide customers with increased predictability for the permit process and better accountability from County review staff. For permit applications using the Project Manager Program, a project manager is assigned to the permit to facilitate communication with the applicant and provide a fee estimate to cover the anticipated scope ofreview. The project manager will also monitor and manage the permit application throughout the review process to ensure that review schedules remain in line with performance standards and the overall work hours are within the range of estimated fees for the project. Your application was received by our office on February 4, 2004. The enclosed information provides a summary of the fee estimate for the anticipated work disciplines and also discusses the submittal process and disclaimers which may affect the final permit fees. Once the attached estimated fee form is signed and submitted to our Department with a complete permit application, including payment of the estimated fee, your project will be assigned for further review. If you have any questions regarding the permit fees or other aspects of the review process, please contact me via email Kimberly.claussen@metrokc.gov or by phone at (206) 296-7167. s· ly, a~~agerIII Planning Section ' Enclosure Cc: Jacquies Consulting w/enc. Greg Borba, Supervisor Current Planning Section, LUSD w/enc Bruce Whittaker, Senior Engineer, Engineering Review Section, LUSD w/enc Nick Gillen, Senior Ecologist, Critical Areas Section, LUSD w/enc Larry West, Senior Geologist, Critical Areas Section, LUSD w/enc Administrative/Finance Section w/enc Application File w/enc ® King County Department of Development and Environmental Services 900 Oakesdale Avenue SW Renton, WA 98055-1219 Land Use Services Division Permit Fee Estimate Application Estimate Nnmber: L04P0002 Permit Title: Soos Creek Permit Type: Preliminary Plat I Date: 3/17 /04 I Based on permit information submitted by the applicant, the Department of Development and Environmental Services (DOES) has determined the amount ofreview fees for the subject application. The fees shown below do not include ancillary permit fees, recording fees, project-related mitigation fees, or other fees that are passed through to the applicant from other agencies or as part of the project's environmental review. Fixed Fees: Counter Service Fee for Application Intake Fire Review Estimate for Hourly Fees: (459 Hours x $144.90) Total Fixed Fees Total Permit Fee Estimate: $483.00 $ 211.83 $694.83 $66,509.10 $67,203.93 Note: The estimate for hourly fees stated above is based on the total estimated number of hours not to exceed 459. hours for the disciplines listed below, and is calculated using the department's hourly rate in effect at the time the work is performed. Based upon the financial disclosures found on page 2, the number of hours required may be modified. The total estimated hours reflect work performed by the following disciplines: Engineering, Grading, Sensitive Area, Traffic, Parks, Planning, and Project Management. This estimate does not include hours and fees associated with variances and/or adjustments to the King County Roads Standards and Surface Water Design Manual or additional time associated with the public hearing. After receiving the fee estimate from DOES, the applicant has ninety (90) days to complete the application submittal. Please call 206-296-6797 to set up an appointment with the Permit Center to complete your application and payment. If the application is not received within ninety (90) days, the applicant may be required to obtain a new fee estimate or this activity may be cancelled. For further questions regarding this fee estimate or for other requirements about this permit application, please contact Kim Claussen via email Kimberly.claussen@metrokc.gov or by phone at 206-296-7167. Project Manager III Land Use Services Division ® King County Department of Development and Environmental Services 900 Oakesdale Avenue SW Renton, WA 98055-1219 Land Use Services Division Permit Fee Estimate Pre-app Estimate Number: L04P0002 Permit Title: Soos Creek Permit Type: Preliminary Plat Applicant: Rick Boston/Boston Design & Development Date: 03/17 /04 Estimated Maximum Hours: 459. Total Fees: $67,203.93 The following disclaimers are attached and are part of the fee estimate for this permit. The applicant is required to submit a signed copy of this form with the application and fee payment acknowledging that the applicant has read the disclaimers stated below. Disclaimer Applicants are responsible for all fixed fees, reported hours performed in reviewing submittal materials and processing, up to the fee estimate. Changes in the scope of the project review will result in a revised review fee estimate. Fee estimates are based on information submitted to DOES by the applicant prior to finalization of the permit application. In addition, estimates are determined by utilizing historical data gathered from projects of similar type, size, and scope. The fee estimate will be the maximum fee charged unless the scope of the project changes. Should fewer hours be required to complete the review, then the applicant may receive a refund for those hours. If items are identified that are not originally disclosed or identified later in the process, a new estimate may be required. Applicants will be responsible for any additional hours identified in a new estimate because of: 1) Changes in the project and unknown or undisclosed site issues 2) Incomplete information or errors in applicant submittal 3) County code fee changes 4) Incomplete information from applicant 5) Errors in applicant information or submittal 6) County code fee changes 7) Appeals & public hearing(s) 8) Citizen inquiries, questions, etc. 11) Additional Review for documents not provided with the initial submittal: a) King County Road Variance application b) Surface Water Design Adjustment, etc. Keeping review fees at or below the fee estimate will depend on the applicant's commitment to complete the process review. This commitment should include submitting materials which address all County codes, policies, previously approved conditions, and responding to the County's request for corrections or additional information in a timely manner, not to exceed 90 days. Acknowledged: ______________ _ Applicant/Owner Name (signature) Date Applicant/Owner Name (print) ® King County Department of Development and Environmental Services 900 Oakesdale Avenue SW Renton, WA 98055-1219 June 7, 2004 Rick Boston Boston Design and Development LLC 14225 E. Lake Kathleen Drive SE Renton, WA 98059 RE: Application for the Preliminary Plat of Soos Creek ODES File No. L04P0002 Dear Mr. Boston: Thank you for your June 7, 2004 letter requesting ·an extension of the deadline for submittal of the additional information required to process the preliminary plat application of Soos Creek. The request for additional information stops all processing of the plat application until the required information is received. The time spent waiting for information to be submitted is not counted toward any time limit requirements of the plat application process. The previous letter established a deadline of June 21, 2004. We are granting an extension to this deadline. If the Land Use Services Division of DOES does not receive the necessary information requested to process your application by September 21, 2004, your application will be canceled or denied. If you have any questions regarding this matter, please call me at (206) 296-7167. ze:, '{}~,::,~ Current Planning Section Cc: Bruce Whittaker, Senior Engineer, Engineering Review Section, LUSD Application File Whittaker, Bruce From: Claussen, Kimberly Sent: To: Monday, March 22, 2004 7:20 AM Whittaker, Bruce Subject: FW: Proposed plat of Soos Creek -L04P0002 -----Original Message----- From: Nunnenkamp, Robert Sent: Friday, March 19, 2004 11:37 AM To: Claussen, Kimberly Subject: RE: Proposed plat of Soos Creek -L04P0002 FYI I have turned down Mr. Boston's request to acquire an easement for road purposes at Boulevard Lane in exchange for trail construction. This means that he'll have to do with a private road rather than dedicating it to the County as a public road. He has subsequently requested permission to install drainage facilities on our property, and I have asked him to submit more information detailing the request. -----Original Message----- From: Claussen, Kimberly Sent: Thursday, March 18, 2004 2:39 PM To: Nunnenkamp, Robert Subject: Proposed plat of Soos Creek -L04P0002 FYI -Attached is a copy of our request for addtl. Info. This is the plat adjacent to Boulevard Lane Park & the applicant is Rick Boston. « File: 104p0002trns.doc » 1 ® King County Departmem of Development an<l Environmental Services Land Use Services Division 900 Oakesdale A venue Southwest Renton, Washington 98055-1219 Plat Screening Transmittal Preliminary Plat Application of Soos Creek LUSD File No. L04P0002 Date of Information Request: March 17, 2004 Deadline for Submittal of Information: June 21, 2004 Please provide ten (10) copies of the following, unless otherwise noted. Note, the following items are in addition to the information requested for complete application (see February 27, 2004 letter). Recreation Space: Submit a conceptual recreation plan that indicates the type of improvements (i.e. sport court, play structure, benches, landscaping, etc.) proposed within the recreation tract(s). See KCC 21A.14.180 E2 for equipment requirements. Walkways: Provide an inventory map (i.e. existing conditions -widths, surface type, etc.) of the walking routes to the elementary, junior high/middle and high school and/or the appropriate bus stop location associated with each school. Identify any improvements necessary to provide safe walking conditions. Letter(s) of intent: Provide a letter(s) of intent from King County Parks and other affected property owners' indicating the willingess to dedicate the necessary right-of-way and construction of 1241 h Avenue SE as well as additional improvements within the park (i.e.the walkway, landscaping and drainage facilities). If these letters cannot be obtained, the plat must be redesigned. Field Survey: Provide a copy of the base topographic map stamped by a licensed surveyor in the State of Washington. Utilities/Sewer Line: The proposed construction of sewer line(s) through the wetland is not a permitted alteration under KCC 21A.24. Provide an alternative route or method of construction (i.e. boring) or submit for a reasonable use exception application (RUE) if this is proposed to be constructed by the developer or a PAUE if construction proposed by the utility district Wetland Study: Submit a study prepared by a qualified biologist which delineates the wetland boundary, provides classification, buffer width(s), and proposed mitigation if impacts to the wetland and/or buffer are proposed (i.e. road crossing). Geotechnical Study: Provide a geotechnical study which evaluates the areas of slopes that are 40% or greater and exceed 20 feet in height as these areas will be required to be placed in sensitive area tract(s). In addition, the report shall provide recommendations regarding the buffers, building setback lines (bsbl) as well as recommendations related to the construction of the roads, lots and as necessary, the drainage facilities. Conceptual Grading Plan: Provide a conceptual grading plan for the lots and roads and indicate areas of rockeries and/or proposed retaining walls and preliminary heights. Note, depending upon the height of proposed rockeries and walls, additional setbacks and/or review may be necessary. BPA: Provide a letter of intent from SPA regarding the placement of the drainage facilities, and road improvements proposed within the easement as well as the ability to dedicate the drainage tract and additional right-of-way as necessary Regional Utility Corridor: Per KCC 21A.12. 140 regional utility corridors shall be contained in separate tract(s). Please revise the plat to place the utility easement(s) in separate tract(s). This may result in the reconfiguration and/or loss of lots. Drainage: The following information must be prepared and stamped by a civil engineer licensed in the State of Washington. Soos Creek Plat -L04P0002 n:1104 • Revise the Level 1 drainage analysis and complaint investigation pursuant to the 1998 Surface Water Design Manual. Please include complaint investigation for a distance of 1 mile downstream per the manual. Actual copies of the relevant complaints should be included. Drainage complaints can be obtained by calling KC Water and Land at 206-296-1900. Any complaints should be reviewed and classified Type 1,2, or 3 problems per Core Requirement 2 of the KCSWDM. Provide narrative in the level 1 analysis describing the appropriate proposed mitigation for downstream complaints. Provide a downstream drainage map in the revised Level 1 Analysis per Core requirement 2 of the KCSWDM. • Revise the Level 1 drainage analysis to include a detailed description/analysis of the proposed drainage system. This must indicate how the proposal meets and/or exceeds the requirements of the King County Surface Water Design Manual, including flow control and water quality standards. • Submit a revised conceptual drainage plan which includes details of the proposed drainage system, including size of pond, conveyance, and water quality. Supporting preliminary drainage calculations should be included for the facility sizing. The conceptual plan should show facilities for infiltration(if proposed) and conventional detention/water quality for portions not suitable for infiltration. The proposed drainage plan should include provisions for detention and water quality for the 1241 h Ave SE road improvements. These improvements must be located within the proposed road R/W or permission/easements must be obtained to construct offsite. A letter of intent from King County Parks or other owners is required if construction is proposed offsite. • Submit a geotechnical study performed by a geotechnical consultant which evaluates the feasibility of infiltration on the site. This study should include depth to seasonal high ground water. • A drainage adjustment is required from Core Requirement 1, to combine the onsite subbasins into one drainage facility. Also, the existing flow from the site is now dispersed sheet flow. Concentrating this flow in the post developed condition also requires an adjustment from Core 1. The site is within a split Level 2/Level 1 Flow Control area per the KCSWDM. If the proposed conceptual drainage plan reflects only Level 1 Flow Control, this aspect should be added to the adjustment request. Roads: • Evaluate the access according to King County Road Standards for entering or stopping sight distance. If the sight distance does not meet King County Road Standards either redesign the access and/or submit for a variance to the standards. • Curve/relocate cul-de-sac ? Significant Tree Plan: Please submit a significant tree plan and retention plan per S0-220, which shows the location of the existing significant trees and a conceptual proposal which indicates which trees are to be retained and/or removed and the area to be replanted. Revised Preliminary Plat: Provide 25 copies of a revised preliminary plat, as necessary, as a result of above- referenced requests for additional information as well as number all lots and provide clear delineation between property lines, lot lines, tracts, right-of-way, etc. As a result of the review of the information, additional information (studies, revisions, etc.) may be requested at a later date. Further evaluation of these issues may result in the reconfiguration and/or loss of lots. Soos Creek Plat -L04P0002 01/04 January 30, 2004 --Kim Claussen -Project Manager Nick Gillen -Wetlands Bruce Whittacre-Drainage KCDDES Re Soos Creek Plat Wetland Mitigation Pre-appl # A03P0286 Dear Plat Reviewers KC. D D.E.s. The subject proposed plat has the entrance in public road right a way that fronts on the adjacent parcel (-0262 Huffman), and it travels north along side the class 1 wetland with the 100' buffer partially overlaping onto it. I need to know the mitigation requirements/costs atributable to this new plat Here is the essence of the issues. 1. The existing access street, 124th Ave SE off of 192nd, is private on parcel -0262 to be quit claimed to the County as public. I will add 4 feet of width to the west of the existing road (away from the buffer/ not in the buffer space), in this public right of way. It is already an impervious gravel street, but will be paved, so I expect no issue here, do you agree?. 2. The proposed new extention into my property and the terminating culdesac comprizes 7400 sqft of area. I have no recourse but to enter my property here. I really have no frontage so as to average and I have nothing to trade, so-. mitigation is required per code 21A24.340 D, E, F. Is is possible to pay a fee so the County could aquire W/L sornwhere else? 3. Reguarding mitigation, per code enhancement it requires 2:1 or 15,000 sq ft. mitigation in buffer or wetland. We would propose to: a. remove the blackberry and upland brush from the buffer area and replant with better vegitation, or b. remove grass in the wetland and plant more desireable vegitation, or c. clean out Soos Creek so there was actually a creek. We need your direction and approval, so-what do you want? Lets understand what you will approve now. 3. This plat puts an retention facility at the low point, at least as low as the buffer allows. Code allows wetponds in the buffer space, what enhansements if any do you require (such as specific requirements such as type of vegitation , etc)? For pond outflows , it is best to put into infiltration trenches rather than draining the area. If done in the buffer area coupled with replanting this area, it would be enhansed to be natural and well watered, is that not acceptable under current code? Lo4Poaaz_ 4. Further, since the new proposed code (effective next year but before our final design is done) clear1y allows piping under buffer. This infiltration consept complies with the intent of preseving natural area and would certainly add water to help this upland buffer area to be wetter. Is this true? 5. The County Parks Department controls the east side of124th. Currently the Parks Department is deciding on how they would like to develop that area, they definitely want a 12' wide pathway to eventually link with the KC trail system. Our proposal shows this pathway but it is not finalized yet. If this plat process accomplihes this, for the Parks department, is there a desired enhansement or a mitigation fee? . These are straight forward questions which need a County answer. Please answer before any appreciable effort is expended on this preliminary plat Sincerely /Cd Rick Boston } I • r , .. r • C s SITE PLAN SOOS CREEK PLAT JACQUES CONSULTING BQ$TON m:s,oN a\KD DEVEI..OPM£NT LLC' 1,t225 E LAKE KATHLEEN DRIYe SE. NEAL JACQUES PE RINTON YA. 98051i1 2833 SI' 183 PU.CE. BURIEN, WA 98166 PHOl'IS (4M) nG-21'5 FAX (42G} aB-3$ PHONE (Zo&) 242HS322 11 I ::ti (;) t,:j C/l t,:j :!I I ~ • +. D • ~ SCALE: r • 50 11--'--------~l,PROJECT NUlt8P January 28, 2004 Kim Claussen -Project Manager ~ Chris Langley -Streets Plat Review Engineer Roads Division KCDDES Re Soos Creek Plat -Road Issues Pre-appl # A03P0286 Dear Plat Reviewers K.C. 0.0.E.S. The subject proposed plat has the following difficult core issues, all related to streets. Your decision on the feasibility of variance is required quickly as these are critical issues. If the proposal is not acceptable to the County, we need to stop the process now. Therefore please consider these seriously. Here is the essence of the issues. 1. We have chosen 124111 Ave SE as the point of access off of 192nd. The only other potential is at mid point in the hill and that is totally unfeasible for this project. Here is why. a. SE 19211<1 is an arterial at a 12% slope, entering at 124111 has very good entering and stopping distance. Entering farther up the hill put both site distances way below minimums and only right turns could be allowed. This project can not afford to pay to do physical mitigations (widening, tum lanes) to 192"". This is not accegtable for this size development. b. 124 Ave is already an established intersection. There is so much traffic and left turn activity (and proximity to the school) that County proposals to improve it are close to reality now (waiting for funding) . To put another intersection in 300 feet up the hill, coupled with interconnect intersections at 116, 120, and nieghborhood at 121, would be very detrimental to traffic flow on this significant arterial. c. 124111 private gravel road has existed for 50 years+ and serves two existing houses plus three parcels of 10 acres total to the north (easements flow thru each parcel). d. The proposal to convert 124111 to public road gives the Parks Department access to the 30 acre park which is now inaccessible for all practical purposes. This is a definite public benefit. e. No wetland is impacted only the 100' buffer. The existing road is already there, we only add 4 feet on the uphill side, not in buffer, and extend it about 140 feet, in buffer. We will mitigate this 7400 sq ft issue. 2. The proposed new SE191st Street runs up the hill to the top and dead ends with no outlet. This road measured from 124111 is 715 feet C/L to C/L, but measured from 192 is 1225 feet. The code for length to a cul-de-sac is 1000 feet. Depending on which figure is chosen we do or don't need a variance. Note the considerations. a. 124"' provides public access north to two additional parcels (7 acres total) and depending on future development this could very likely extend and link to other roads. If so the 715' distance would be valid and satisfy code. b. Additionally we are attempting to acquire rights for one of two possible emergency access roads at the top (west or south off -0220 parcel); these are flat easy entrances but current owners have not agreed to allow ii, and it is not in the proposal. Emergency access at the -0240 parcel is not reasonable, site distance is very bad, the route is convoluted and hard to manage large fire trucks, it is very low on the hill and still has steep road issues, and the overall distance is not improved significantly. 3. The proposed 191'1 would, in the incline area (71'/470'), average 15.1% grade with likely a 100' portion at 19%, thus exceeding the standard 15%. The natural terrain across the site is uniformly sloped and this is the only economical route. A broad diagonal drives road costs up with major earth work and dramatically reduces lot quantity and useable shapes. If this road is not allowable, then project combining parcels -0240 and -0220 is not feasible. 4. The required midpoint cul-de-sac has been placed 530' in from 192nd at the end of 124111 • It is anticipated that 124111 will be extended in future development (easements exist); this could be private or by the County Parks Department. Recognizing that this uses a small area in the 100' buffer but the location is best for public. We will do buffer mitigation which we have to do anyway per 1 e. 5. The County Parks Department manages the County parcel on the east side of the section line; if they were a private citizen the 60 feet R of W could be clearly no issue for the 124111 street (the eastern street R of W demarcation line was lost when the County acquired the whole wetlands parcel). Currently the Parks Department is deciding on how they would like to develop that area, they definitely want a 12' wide pathway to eventually link with the King County trail system. Our proposal shows this pathway but it depends on them. If it is not to be, we will put a 5' side walk on the west side of the road (not in buffer area). These are deal killer issues. We need the County answer as to "ok" or variance to allow this proposal. If not, our plan is to stop development of parcel -0240 and -0220 and proceed with -0260 alone (15 lots) with 124"' as the only access. Please answer before any appreciable other effort is expended on this plat. ;;;:Q: Rick Boston 1· • . --·~-··-... -~ ;:-~ r -- SITE PLAN SOOS CREEK PLAT BOS'ION DESlGN ARD DKVElDPllliNT ILC U.225 E u.RE KA'THLEtM DRIVE SE, R&:NTUN WA, 980!1.9 PHONK (485) 228-8145 FAX (425) 288-- ! JACQUES CONSULTING NEAL JACQUES PE 283$ SW 11'3 PU.CE. BURJ.E». WA llB Ul6 PHOH£ (208) zu:-~322 {'if i ... ~ . ' . ~-1----.,-,.:.:.:... \ :.··:-: :i)1t;1.· ··. ·} .. ·,· :· 1 ··! I ,.: i". •'• :-: 2 II I > 'ti 0 ' ~ I ~ ' -0 z 0 'rj January 30, 2004 Kim Claussen -Project Manager Nick Gillen -Wetlands ~· Bruce Whittacre-Drainage KCDDES Re Soos Creek Plat Wetland Mitigation Pre-appl # A03P0286 Dear Plat Reviewers The subject proposed plat has the entrance in public road right a way that fronts on the adjacent parcel (-0262 Huffman), and it travels north along side the class 1 wetland with the 100' buffer partially overlaping onto it. I need to know the mitigation requirements/costs atributable to this new plat Here is the essence of the issues. 1. The existing access street, 124th Ave SE off of 192nd, is private on parcel -0262 to be quit claimed to the County as public. I will add 4 feet of width to the west of the existing road (away from the buffer / not in the buffer space), in this public right of way. It is already an impervious gravel street, but will be paved, so I expect no issue here, do you agree?. 2. The proposed new extention into my property and the terminating culdesac comprizes 7400 sqft of area. I have no recourse but to enter my property here. I really have no frontage so as to average and I have nothing to trade, so--. mitigation is required per code 21A24.340 D, E, F. Is is possible to pay a fee so the County could aquire W/L somwhere else? 3. Reguarding mitigation, per code enhancement it requires 2:1 or 15,000 sq ft. mitigation in buffer or wetland. We would propose to: a. remove the blackberry and upland brush from the buffer area and replant with better vegitation, or b. remove grass in the wetland and plant more desireable vegitation, or c. clean out Soos Creek so there was actually a creek. We need your direction and approval, so-what do you want? Lets understand what you will approve now. 3. This plat puts an retention facility at the low point, at least as low as the buffer allows. Code allows wetponds in the buffer space, what enhansements if any do you require (such as specific requirements such as type of vegitation , etc)? For pond outflows , it is best to put into infiltration trenches rather than draining the area. If done in the buffer area coupled with replanting this area, it would be enhansed to be natural and well watered, is that not acceptable under current code? ' . 4. Further, since the new proposed code (effective next year but before our final design is done) clearly allows piping under buffer. This infiltration consept complies with the intent of preseving natural area and would certainly add water to help this upland buffer area to be wetter. Is this true? 5. The County Parks Department controls the east side of124th. Currently the Parks Department is deciding on how they would like to develop that area, they definitely want a 12' wide pathway to eventually link with the KC trail system. Our proposal shows this pathway but it is not finalized yet. If this plat process accomplihes this, for the Parks department, is there a desired enhansement or a mitigation fee? . These are straight forward questions which need a County answer. Please answer before any appreciable effort is expended on this preliminary plat. Sincerely ;1rr·:..) Rick Boston • ·-"·"" ...... -.. - .. ,/ ,o· IIZ4ill /• illlf.l:~I ·-~ --. , .... , ,--, ,_ I '"' I { ~-f , , I I I , , I I/(-· .H . ( ( I , ',W 1/ltll ' I _--:J~i:•·';,· S";_-a"'. ,,:,.~'"fC:·- SOOS CREEK PLAT SITE PLAN A PORTION OF THE SW SECTION 33, TWP. 23 N • (} .. I f.J..,J --.._ L ) •~ .. -1. ·1;:- 'f"".!.' ~ I RGE 5 E. WM i ' I i B ' -Jtr:[:/ ' :r1;:;-,~J 1111 ·, 1:'h::,· ,',.' "' . 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Ir ,~,4i Q ·~ "~~ ; ~ &l~i! ~ Ql ~~ 5 r-:!: w ~ f --- William Popp Associates Transportation Engineers/Planners (425) 401-1030 FAX (425) 401-2125 e-mail: info@wmpoppassoc.com TRAFFIC IMPACT ANALYSIS for Soos Creek Plat New Single Family Residential Development Prepared for: Charlie Spaeth I John Minden 6839 Ravenna Ave. NE Seattle, WA 98115 Prepared by: William Popp Associates 14-400 Building, Suite 206 14400 Bel-Red Rd Bellevue, WA 98007 May 27, 2004 'C o.o.E.S. 14-400 Building• Suite 206 • 14400 Bel-Red Road• Bellevue, WA 98007 UAf>~ Traffic Impact Analysis (5/27104) Soos Creek Plat TABLE OF CONTENTS INTRODUCTION .................................................................................................................................. I I. PROJECT DESCRIPTION ............................................................................................................ I II. EXISTING CONDITIONS .............................................................................................................. I A. TRANSPORTATIONFACILITI' INVENTORY .... B. PEDESTRIAN SERVICES ................ . C. EXISTING TRAFFIC VOLUMES D. SIGHT DISTANCE (SSD AND ESD) .. .. E. ACCIDENTS ................................. . .. ....... I . ... 2 ... 2 . ...... 2 . ..... 4 F. KING COUNTY CAPITAL IMPROVEMENT PROGRAM ............................................................ . . .. 4 Ill. ANALYSIS ...................................................................................................................................... 4 A. BACKGROUND TRAFFIC GROWTH. F. TRIP GENERATION C. TRIP DISTRIBlJTION AND TRAFFIC ASSIGNMENT D. BACKGROUND TRAFFIC PLUS PROJECT TRAFFIC VOLUMES ... E. LEVEL-OF-SERVICE {EXISTING AND FUTURE) .. f. QUEUING ... G. LEFT TURN POCKET WARRANT ANALYSIS ..... 4 . ................... 5 ................................... 5 . .. 6 ... 7 .. ....... 9 ............. IO IV. CONCLUSIONS ....................................................................................................................... II V. MITIGATION RECOMMENDATIONS .................................................................................... 12 TECHNICAL APPENDIX William Popp Associates Page i Traffic Impact Analysis (5127/04) Soos Creek Plat INTRODUCTION The following report was prepared to address King County Traffic Engineering's request for a Traffic Impact Analysis of the proposed Soos Creek Plat new residential development located in the Soos Creek area of unincorporated King County. The traffic analysis includes, among other things, analysis of intersections impacted by project traffic that meet certain criteria. That criteria is specified in King County Ordinance 11617, Section 60 Intersection Standards", which requires analysis of all intersections (including project driveways) impacted by no less than 20 percent of the project peak hour traffic and no less than 30 peak hour project generated trips during that same hour. Based on project traffic estimates contained herein, the project is only required to conduct an analysis of off-site conditions at the SE 192nd St/I 24th Ave SE intersection only I. PROJECT DESCRIPTION The proposed development is located on the west side of the extension of 124th Ave NE approximately 300 feet north of SE 192nd Street. A vicinity map is presented in Figure I. The proposed development will include a total of 33 single family units. The total area of the site is approximately 6. 9 acres. The site is currently served by a gravel road that also serves three existing single family homes, one of which is occupied, one is currently vacant but posted for rent, and one appears to be not habitable. The site is assumed to be completed and occupied by 2006. The proposed site plan is presented in Figure 2. II. EXISTING CONDITIONS A. Transportation Facility Inventory The site is currently served by a private gravel road from SE 192nd St which is the north extension of 124th Ave SE. The road will be improved per the King County Road Standards (Section 2.03) to public urban residential Sub-Access Street standards. This standard requires a pavement width of 24 feet plus curb and 5-foot sidewalk on one side. SE 192nd St is functionally classified as a Principal Arterial traversing east-west near the south side of the site. This roadway provides connection between SR 515 and 140th Ave SE. The cross section includes two I I-foot lanes, a 7-foot pedestrian asphalt path on the north side ( channelized with rumble bars and fog line), a 6 to 8-foot paved shoulder on the south side (west of 124th Ave SE) and a 6-foot asphalt sidewalk (east of 124th Ave SE). The roadway is channelized with a double yellow centerline with occasional skip stripe William Popp Associates Page I Traffic Impact Analysis (5127/04) Soos Creek Plat delineation for acceptable passing zones, and fog lines. The posted speed limit is 40 mph, however east of 124th Ave SE the speed limit is reduced to 20 mph in the vicinity of the Junior High School during times when "Children are Present". Heading west from 124th Ave SE to approximately 121 '' Pl SE, the roadway slopes upward at an approximate rate of 11 %. Heading east from 124th Ave SE, the roadway slopes downward at an approximate rate of 8% that quickly levels out some 400 feet east near Meeker Junior High School. 124th Ave SE is functionally classified as a Collector Arterial traversing north-south south of SE l 92"d St. This roadway provides connection between SE l 92"d St and SE 208th St. The cross section includes two I I-foot lanes, a 6 to 8-foot shoulder on the west side, a 3 to 4-foot paved shoulder on east side, and channelized with a double yellow centerline and fog lines. The posted speed limit is 35 mph. The improved roadway extension of I 24th Ave SE north of SE 192nd St will be classified as an urban sub-access street. B. Pedestrian Services The available pedestrian facilities in the immediate vicinity of the site consist of a large paved shoulder approximately 7 feet wide on the north side of SE l 92"d Street that is channelized with rumble bars and fog line delineation. There is a short sidewalk section on the south side of SE 192"d St between 124th Ave SE and the school. There is also a pedestrian signal and crosswalk just to the east of 124th Ave SE (where the sidewalk ends). C. Existing Traffic Volumes A weekday AM and PM peak period count was conducted at the SE 192"d St/124th Ave SE intersection Tuesday December 10, 2002. The counts were adjusted to mid-2004 utilizing a growth rate of 3 % per year for 1. 5 years to reflect current conditions. A summary of the existing 2004 turning movements are presented in Figure 3 and in the Technical Appendix. D. Sight Distance (SSD and ESD) A sight distance analysis for both the stopping sight distance (SSD) and the entering sight distance (ESD) at the SE l 92"d St/124th Ave SE intersection was evaluated. The ESD terminology was taken from the King County Road Standards. The SSD is the distance needed for a vehicle traveling at design speed on the major road to stop before reaching a stationary 6" high object in its' path. This criteria of course applies continuously along the roadway and the measured SSD generally indicates the design speed of the roadway. The minimum required stopping sight distances, obtained from Table 2.1 of the 1993 King County Road Standards (KCRS), are shown for various speed conditions in Table I below. William Popp Associates Page 2 Traffic Impact Analysis (5127/04) Soos Creek Plat The other sight distance considered is Entering Sight Distance (ESD). ESD as defined by KCRS deals with the ability of side street entering and mainline left-turning motorists to see oncoming vehicles with sufficient time to make entering or crossing maneuvers without significantly impeding the speed of the mainline traffic or creating hazardous conflict conditions. Entering sight distance thresholds are highest for the condition that allows a vehicle to enter the major street and attain 85 percent of the design speed before being overtaken by an approaching vehicle. As a result, the entering sight distance for this condition relates more to driver comfort rather than safety. The minimum acceptable values for entering sight distance per the County standards are also shown in Table I. These values represent a compromise between the crossing and entering conditions described above. Table 1 Sight Distance Requirements at SE 192•d St/124 .. Ave SE Design Sight Distance (ft) Intersection Speed' Grade b Required c Observed a Stopping Sight Distance (SSD) • approach from west 50mph -11% 635' 800' approach from east 50mph +8% 415' 1,900' Entering Sight Distance (ESD) f b d looking left 50mph n/a 685' 1,900' looking right 50mph n/a 685' 850' Design speed assumed at 50 mph, or + l O mph over posted speed of 40 mph. Grade on SE 192nd St (worst case grade used). Grade adjustments only applicable for SSD. Per Table 2.1 of the 1993 King County Road Standards. SSD values adjusted for grade; SSD for level condition is 475'. Observed values are+/. 50'. Stopping sight distance assumes an eye height of3.5' in approaching lane, and an object height of 0.5' at intersection. Entering sight distance assumes an eye height of3.5' set back 10 from edge of traveled way, and an object height of 4.25' in the approaching Jane. For a design speed of 50 mph, the minimum stopping sight distance is 475 feet for level conditions (between -3% and +3%). When adjusted for grade, the minimum stopping sight distance is 63 5' approaching from the west and 415' approaching from the east. The minimum entering sight distance is 685 feet. Entering sight distance is not normally adjusted for grade since the entering vehicle will traverse the same grade as the approaching vehicle. As shown in Table I, there is adequate stopping sight distance and entering sight distance at the SE l 92"d St/I 24th Ave SE intersection. William Popp Associates Page 3 Traffic Impact Analysis (5127/04) Soos Creek Plat E. Accidents The three year accident history at the SE l 92"d St/124th Ave SE intersection for the period of January I, 2000 through December 31, 2002 was provided by King County. A summary of the accident history at this intersection is provided in Table 2. httersection SE 192nd St/124 Ave SE Table 2 Accident History 2000 Year 2001 4 2002 Total 6 11 As shown in Table 2, there were 11 accidents at this intersection between 2000 and 2002 inclusive. All of the eleven accidents were injury related. Seven of those intersections were right-angle type accidents, and 4 were rear-end accidents. The accident rate over the course of the three year period was 0.76 accidents per million entering vehicles (acc/mev), however, the accident rate in 2002 was I. 25 acc/mev. Any location where the accident rates exceeds I. 0 acc/mev is generally considered for further review. According to the County, this intersection is currently a High Accident Location and meets traffic signalization warrants. F. King County Capital Improvement Program The County's Capital Improvement Program (CIP) includes improvement of SE 192•d Street between Benson Road and 140th Ave SE; Project Number 401595. Plans include widening to 3 lanes plus pedestrian improvements and intersection improvements, to be constructed in phases. Recently however, and due to safety concerns, the intersection of SE 192"d St and !24th Ave SE was proposed as a separate project from 401595. The project number for this project is now 401004 and includes construction of a I 00-foot westbound left-turn lane, pedestrian walkway along north side of SE l 92"d Street from intersection to Meeker Junior High School, new steel pole traffic signal, pedestrian improvements around intersection radii, and possibly removal of the existing pedestrian signal at Meeker Junior High School. The County has indicated that this project is proposed as a short term small budget project and will likely be constructed within the next few years. Ill. ANALYSIS A. Background Traffic Growth For background traffic growth rate assumptions, suggested using a rate of 3% per year to reflect all pipeline related traffic William Popp Associates Page 4 Traffic Impact Analysis (5127/04) Soos Creek Plat Typically, background traffic volumes are estimated by factoring the existing traffic volumes by the historical growth in traffic to the project's horizon year and adding in known pipeline development proposals. Traffic volumes at this intersection based on King County historical data (1993 through 2003) indicate the volume at this intersection is increasing at an approximate rate of 1.4% per year with annual fluctuations ranging between 0.9% and 2.8%. A chart depicting this growth is shown in the Technical Appendix. King County Department of Transportation suggested using a rate of 3. 0 percent annually. Thus, for the purpose of this analysis, a factor of 3. 0 percent per year was applied to existing PM peak hour counts to achieve 2006 background volumes. AM and PM peak hour 2006 volumes with project (ie., future background traffic forecast) are shown in Figure 3. F. Trip Generation Trip generation for the proposed project was calculated using trip generation rates obtained from the Seventh Edition of the ITE Trip Generation Report, 2003. For this site, trip generation rates are associated with Land Use Code 210, Single Family Dwelling Units, were used. The results of the trip generation analysis are presented in Table 3. Table 3 Project Vehicular Trip Generation !TE Code 210' Land Use Size 33 lots Rate Vol LUC 210 -Single Family Dwelling Unit AWDT 9.57 316 AM Peak Total In Out 0. 750 0.250 o. 750 25 6 19 PM Peak Total In Out 1.010 0.640 0.360 33 21 12 As shown in Table 3, the proposed project is estimated per ITE to generate a total of 316 average weekday daily trips, 25 AM, and 33 PM peak hour trips. C. Trip Distribution and Traffic Assignment Trip distribution patterns used to determine the PM peak hour the project traffic assignment were nominally based on traffic counts on SE 92"• St and 124th Ave SE as well as traffic engineering judgment. The estimated distribution percentages and project trips are shown in Table 4. William Popp Associates Page 5 Traffic Impact Analysis (5127/04) Soos Creek Plat Table 4 Trip Distribution Summary (AM and PM Peak Hour) Distribution Percentage Project Trips (AM PK) Project Trips (PM PK) Roadway SE 192nd St (west) SE 192nd St (east) 124th Ave SE (south) Total 60% 30% 10% 100% In Out 4 6 11 6 2 19 In Out 13 6 2 21 7 4 I 12 As shown in Table 4, the majority (60%) of the project trips will be to/from the west on SE 192°d St. The project's AM and PM peak hour traffic assignment to the surrounding roadway network is shown in Figure 4. Based on this table and Figure 4, no other intersection other than the SE I 92°d St/I24lh Ave SE intersection is subject to analysis within this traffic study as the 30 trip threshold disseminates below 30 trips past this intersection. D. Background Traffic plus Project Traffic Volumes Year 2006 PM peak hour with-project traffic volumes were developed by adding project trips to the year 2006 background traffic volumes. Table 5 shows the impact of project traffic as a percentage at the SE 192°d St/124lh Ave SE intersection. Table 5 2004 and 2006 Peak Hour Traffic Volumes• 2006 2004 without Project Intersection Existing Project b Veh" AM PEAK HOUR 1,401 1,486 25 PM PEAK HOUR 1,380 1,464 33 Total AM or PM peak hour vehicles entering the SE 192nd St/124\h Ave SE intersection. Background growth reflect a growth rate of3.0% per-year. Vehicle trips estimated from proposed site use. Project impact; percent of total entering traffic. 2006 with Project Volume Impact(%) d 1,511 1.7% 1,497 2.2% As shown in Table 5, the impact of project traffic at the SE 192"d St/124th Ave SE intersection is 1.7% of total entering traffic during the AM peak hour and 2.2% during the PM peak hour. The new trips generated by the proposed project at this intersection is estimated to be 25 PM peak hour trips during the AM peak hour, and 33 during the PM peak hour. Year 2006 PM peak hour with project volumes are presented in Figure 3. William Popp Associates Page 6 Traffic Impact Analysis (5127/04) Soos Creek Plat E. Level-of-Service (Existing and Future) Level-of-service (LOS) is a term defined by transportation and traffic engineers as a qualitative and quantitative measure of operational conditions within a traffic stream and the perception of these conditions by motorists and/or passengers. There are several quantitative indices utilized depending on the type of intersection control present. There are six levels-of-service that are given letter designations from "A" to "F", with "A" being the best, or minimum delay conditions, and "F" being the worst, with maximum delay or jammed conditions. LOS "C" or "D" is generally considered acceptable for planning and design purposes, while LOS "E" represents operating conditions at or near capacity with freedom to maneuver being extremely difficult. Level-of-service for the existing condition, as well as future conditions, were calculated using the techniques presented in the 2000 Highway Capacity Manual (HCM). The supporting Highway Capacity Software utilized for all calculations is version 4.1 c. Level- of-service criteria and definitions for signalized and non-signalized intersections are presented in Table 4. Table 6 Intersection Level-of-Service Criteria Level of Service A B C D E F 1 Delay; seconds per vehicle Definition Little or no delay Short traffic delays Average traffic delays Long traffic delays Very long traffic delays Extreme delay Stopped Delay Per Vehicle I signalized non-signalized Less than 10.0 sec 10.1 to 20 sec 20.1 to 35 sec 35.1 to 55 sec 55.1 to 80 sec Greater than 80 sec Less than 10.0 sec IO. I to 15 sec IS. I to 25 sec 25.1 to 35 sec 35.1 to 50 sec Greater than 50 sec The existing (year 2004) and the future (year 2006) weekday AM and PM peak hour level of service results at the analysis intersection is presented in Table 7. Note that for signalized intersections, the delay presented represents the overall operation of the intersection, whereas the delay presented for an unsignalized intersection summary represents the delay for the stopped approach or movement. William Popp Associates Page 7 Traffic Impact Analysis (5127/04) Soos Creek Plat Table 7 Level of Service -2006 PM Peak Hour with Project ' SE 192nd St/124tb Ave SE' Peak Hour Peak Hour Time Frame LOS Delay Comments AM PEAK HOUR 2004 Existing B (13.9) northbound approach; shared. F (71.7) southbound approach; shared (private) A (<lO.O) eastbound left tum. A (<lO.O) westbound left turn. 2006 w/o Project C (15.5) northbound approach; shared. F (88.7) southbound approach; shared (private) A (<lO.O) eastbound left tum. A (<10.0) westbound left tum. 2006 w/Project C (16.6) northbound approach; shared. F (54.9) southbound approach; shared (public) A (<10.0) eastbound left tum. A (<10.0) wembound left tum. B (18.7) with signal and EBIWB left turn lanes (delay represents ovl!l'aU intersection delay) PM PEAK HOUR 2004 Existing D (2&.5) northbound approach; shared. A (9.5) southbound approach; shared (private) A (<lO.O) eastbound left tum. B (10.2) westbound left tum. 2006 w/o Project E {3l.&) northbound approach; shared. A (9.6) southbound approach; shared (private) A (<lO.O) eastbound left tum. B (10.6) westbound left tum. 2006 w!Project E (39.5) northbound approach; shared. D (35.0) southbound approach; shared (public) A (<lO.O) eastbound left tum. B (10.6) westbound left tum. C (22.4) with signal and E.BIWB le.ft turn lanes(deliJy repre.senls overall inl.enection delay) Project; 33 SFDU's. During the AM peak hour, the critical side-street approach is the southbound approach (from a private road without project) and is estimated to operate at LOS F during the existing year and the horizon year with or without the project. For the existing condition and the future without project condition, there is only one trip exiting from the private drive during the hour (and turns left). The project will add 19 trips to the this approach with 60% turning right. Thus since the right turn movement is general a low delay movement, the overall approach delay for this approach (the southbound approach) improves with the project. The average delay improves from approximately 34 seconds per vehicle with the project traffic; from 88. 7 sec/veh to 54. 9 sec/veh. The eastbound and westbound left turns are estimated to operate at LOS A. With installation of a signal, as part of CIP 401004, the overall intersection LOS is estimated to be LOS C with an William Popp Associates Page 8 Traffic Impact Analysis (5/27104) Soos Creek Plat average delay of 18. 7 seconds per vehicle. The worst approach is estimated to be the northbound approach with a LOS D and an average delay of 39.6 seconds per vehicle. It is important to note that the geometric and signal operation assumptions including the following: • Two-lane approaches on the east and west legs; left-turn pocket and through-with- shared-right-turn for both approaches. • Single lane approaches on the north and south legs. • A four legged intersection with signal mast arms on all legs. • A three-phase fully-actuated signal with protected/permissive phasing for the eastbound and westbound left turn lanes. During the PM peak hour, the critical side-street approach is the northbound approach (from !24th Ave SE) and is estimated to operate at LOS D during the existing year and LOS E during the horizon year with or without the project. The southbound approach (private road without project) is estimated to operate at LOS A for the existing condition and the future without project condition. The LOS is estimated to worsen to LOS D with project, and the average delay is estimated to be 35 seconds per vehicle. The project will add 12 trips to the this approach with 60% turning right. The eastbound left turn is estimated to operate at LOS B and the westbound left turn is estimated to operate at LOS A. With installation of a signal, as part of CIP 40 I 004, the overall intersection LOS is estimated to be LOS C with an average delay of 22.2 seconds per vehicle. The worst approach is estimated to be the northbound approach with a LOS D and an average delay of 45.6 seconds per vehicle. It is important to note that the geometric and signal operation assumptions are as noted above in the AM level of service discussion Refer to the Technical Appendix for the volume breakdown and level of service calculation sheets. F. Queuing An analysis of queuing for selected movements at the SE 192nd St/124th Ave SE intersection was conducted. Queuing was reported for the 95th percentile condition. The 95th percentile queue implies that 95 percent of the time the queue will be equal to or less than calculated, and 5 percent of the time the queue will exceed the calculated queue. The fu1dings are discussed below. At the SE 192"d St/124th Ave SE intersection, vehicle queuing was calculated for only the eastbound and westbound approaches. This would include the eastbound left turn lane, the eastbound through/right lane, the westbound left turn lane, and the westbound through/right turn lane. The calculated queue lengths for the 2006 AM and PM peak hours with project are presented in Table 8. William Popp Associates Page 9 Traffic Impact Analysis (5127104) Table 8 Peak Hour Queuing Estimates • In tcrsection/ Approach AM Peak Hour Eastbound Left Tum Lane Eastbound Through/Right Tum Lane Westbound Left Tum Lane Westbound Through/Right Tum Lane PM Peak Hour Eastbound Left Turn Lane Eastbound Through/Right Turn Lane Westbound Left Tum Lane Westbound Through/Right Tum Lane 2006 Peak Hour with Project Traffic 95th Percentile Queue Vehicles b Length (ft)' 0.1 7.1 7.2 36. I 0.3 44.2 4.3 7.5 3 178 180 903 8 1,105 108 188 Queuing summaries at the SE 19200 St/1241:h Ave SE intersection. Queue results obtained from the HCS outputs. Based on 25 feet per vehicle. Soos Creek Plat As shown in Table 8, for the 2006 peak hour with project traffic, the maximum 95th percentile queue for the eastbound left turn movement occurs during the PM peak hour and is estimated to be only 0.3 cars per cycle which equates to 8 feet. Of course, this is a calculated result. Adjusting for real world conditions, the maximum 95th percentile queue will be I vehicle or 25 feet for the eastbound left turn. The eastbound through queue is estimated to be I, I 00 feet during the PM peak hour. It is important to note that the area north of SE l 92"d St in the 124th Ave SE corridor is not anticipated to grow in the future, thus the eastbound left turn volume and queue estimates should be adequate for design purposes. G. Left Turn Pocket Warrant Analysis The analysis considered the need for an eastbound left turn lane on SE ! 92"d St during both the AM and PM peak hour periods. This analysis was conducted based on left turn storage guidelines from the WSDOT Design Manual, Figure 910-9a. The results of the analysis are presented in Table 9. William Popp Associates Page JO Traffic Impact Analysis (5127/04) Time AM Peak.Hour PM Peak:Houi- Total DHV1 1,273 1,296 Table 9 Left Turn Lane Warrant Analysis Eastbound Left Tums During Peak Hour 1, Veh % Lefts 4 13 0.3% 1.0% WSDOTCurve Warrant Threshold 0 Veh % Lefts 17 17 1.35% 1.29% Soos Creek Plat Warrant Met? No No 1 Total DHV: Total volume from both approach directions on SE 192"" St (2006 peak hour volume with project traffic). 1 Total future vehicles turning left into the site during the peak hour. 3 Warrant volumes based on WSOOT Design Manual Figure 910-9a for posted 40 mph speed Warrant volumes shom1 are minimums. As shown in Table 9, an eastbound left turn storage lane on SE 192"d St is not needed per the WSDOT Left-Turn Storage Guidelines. Sununary calculation sheets are attached. However, due to the fact that a westbound left turn lane is being constructed on the opposite side of the intersection, it is good design practice that an opposing eastbound left turn lane be constructed as part of the same project. IV. Conclusions The preceding analysis was prepared to address issues identified by King County traffic engineering staff and to ensure adequate traffic operations are achieved for both the new site residents and the surrounding traffic. Based on the findings contained herein, the project impacts only warranted a traffic analysis of conditions at the SE 192"d St/12411, Ave SE intersection. The following is a sununary of findings of this study: • The project consists of33 new single family dwelling units and is estimated to generate 316 average weekday daily trips, 25 AM peak hour trips and 33 PM peak hour trips. • King County is proposing as part ofCIP 401004 to construct a westbound left turn lane and signal at the SE 192"d St/12411, Ave SE intersection as well as new pedestrian amenities. This intersection is considered a High Accident Location, and the intersection meets accident warrants for installation of a signal. • Since the current configuration of the SE 192"d St/12411, Ave SE intersection includes 4 legs, it is assumed a new signal would include signal control for the north leg, even if it remains a private drive. • There is adequate entering and stopping sight distance for the improved north leg at the SE l 92"d St/12411, Ave SE intersection. However, this may be irrelevant with the construction of a signal at this intersection. • During the AM peak hour, the southbound approach ( critical approach) level of service is estimated to be LOS F with or without the project. The project traffic in fact actually improves the average approach delay by approximately 34 seconds per vehicle. This is due to the fact the approach is a weighted result oflefts, throughs, and William Popp Associates Page// Traffic Impact Analysis (5/27/04) Soos Creek Plat rights, and 60% of the project traffic is right turn. It should be pointed out that there are only 20 vehicles on the southbound approach during the AM peak hour. • During the PM peak hour, the northbound approach is critical. The level of service is LOSE with an average delay of39.5 seconds per vehicle for the future with project scenario. The southbound approach is LOS D and there are only 14 vehicles. • The level of service for the eastbound and westbound left turns is LOS A or B for the future with project scenario. • With installation of a signal and left turn pockets on the eastbound and westbound approaches, the level of service is C for both the AM and PM peak hours. The northbound approach is the worst approach; LOS D. • For the future with project scenario, the eastbound left turn 95th percentile queue is estimated to be only 0.3 vehicles per cycle which occurs during the PM peak hour. Thus, the adjusted maximum queue is estimated to be 1 vehicle or 25 feet. • The westbound left turn 95th percentile queue is estimated to be 180 feet in the AM peak hour and I 08 feet in the PM peak hour. It is assumed that the current County CIP design includes a 100 foot westbound left turn storage lane and a 50 foot transition zone. Assuming that storage can be utilized in the transition, the turn lane may be 30 feet short of what is required. This is all based on 2006 traffic forecasts. A 125 foot storage lane for the westbound left turn may be more appropriate. • An eastbound left turn lane is not warranted per WSDOT guidelines. However, it would be better design practice to include an opposing turn lane when the westbound left turn lane is constructed. The recommended minimum length of an eastbound left turn storage lane should be 50 feet. Transition tapers back to existing would begin past the 50 foot zone. Assuming this turn lane ends in aligrunent with the curb radii endpoints on either side, the added pavement area is estimated to be approximately 17% of the westside widening, and 7% of the total widening (not including shoulders). Finally, the project has applied for transportation concurrency and received a certificate of concurrency for 43 single family lots. V. Mitigation Recommendations The mitigation recommendations for the Soos Creek Plat residential project are as follows: • King County's Mitigation Payment System (MPS) is utilized to provide funding for transportation improvements. The county is divided into 456 zones for which a residential fee has been pre-calculated for each zone. This project is located in MPS Zone #342. The residential fee within this zone is $3,765 per single-family unit per the (latest) October 28, 2002 King County Mitigation Payment System Residential Fee Schedule (obtained from www.metrokc.gov). Assuming there are 33 units, it is estimated that the MPS fee would be $124,245. • The project will be required to improve (per the King County Road Standards, Section 2.03) the private road between SE 192"d St to the plat to public urban residential Sub- William Popp Associates Page 12 Trafjic Impact Analysis (5/27/04) Soos Creek Plat Access Street standards. This standard requires a pavement width of 24 feet plus curb and 5-foot sidewalk on one side. • An eastbound left turn lane does not meet warrants for required installation. However, due to the fact the County CIP will be constructing a westbound left turn lane it is recommended that an eastbound left turn lane be considered for better design and safer operations. Preliminary sketches of a short SO-foot eastbound left turn lane indicate that approximately 1,500 sf of additional pavement would be required (versus no left turn lane) on the west leg. This additional pavement would represents approximately 7% of the total paved area when considering both the east and west legs. • The Soos Creek plat project will certainly benefit from the installation of a signal at the SE 192°d St/124th Ave SE intersection. However, this signal will be constructed with or without the project and it is assumed it will be designed to accommodate all four legs. If the project were required to contribute towards the signalization improvement costs, it is recommended that the fee be based on the project's impact at the intersection. A fair-share percentage impact methodology results in a project impact of 2.2% of the total traffic entering this intersection. This is based on traffic during the PM peak hour. William Popp Associates Page 13 William Popp Associates Transportation Engineers/Planners (425) 401-1030 FAX (425) 401-2125 e-mail: info@wmpoppassoc.com TECHNICAL APPENDIX FOR SOOS CREEK PLAT May 27, 2004 CONTENTS: ,/ King County Mitigation P~ment table ../ Traffic Growth at SE 192" St/I24th Ave SE ,/ AM and PM Peak Hour Turning Movement Volumes "" 2004 Peak Hour ( existing) "" 2006 Peak Hour without project -2006 Peak Hour with project ,/ HCS Level of Service Calculations "" 2004 AM and PM Peak Hour ( existing) -2006 AM and PM Peak Hour without project "" 2006 AM and PM Peak Hour with project -2006 Signalized Scenario (AM and PM) ,/ Left Turn Storage Guidelines Analyses 14-400 Building• Suite 206 • 14400 Bel-Red Road• Bellevue, WA 98007 SOOS CREEK PLAT CML ENGINEERING LEVEL 1 TECHNICAL DESIGN ANO INFORMATION REPORT FOR PRELIMINARY PLAT REVIEW For the King ColDlty DDES: SUBDIVISION FILE _A03P0286_ January 26, 2004 Richard A Boston Boston Desig:11 IIIJd Development Co LLC 425--226-2145: Neal M Jacques, P.E. Jacques Consulting 206-242-5322 ;::~ .. : re=: rF" ~ n 'i!Jt fE ~ , I !J IL-\\_,.} \~ LJ YJ ~--= ' ~.~. ~------' --- "1 l\ FEB 4 2004 Soos Creek Plat TIR K.C. D.D.E.S. 1 By Jacques Consulting · January 26, 2004 "'2../ 13 /'?'+ i"'~~-t--~ ~,.~ TABLE OF CONTENTS L Project Oven'iew B Pre611dnary Conditions Summary m. Off-site Analysis JV. Retention and Infiltration Design V Conveyance System Design VI. Water Qaality Design VIL Drainage Basin-a VIII. Other Permits IX. Erosion ud Sedimentation Control Plaa X. Bond Quantities, Easements and Declaration-s XI. Main-tenl!Dee Manual Appendix A -Site Plan Appeadix B-SollTests Pits and Site Photos : --~-~:-. -. -... Soos Creek Plat TIR 2 9y Jacques Consulting January 26, 2004 TIR Section I PROJECT OVERVIEW The project consists ofplatting and developing 6.9 acres to 35 lots. current zoning ofR6. Lot size irvei:ages 5000 sq ft; ranging front4600to 7000 sq fl Lot width.nwge from#to 70 filct and lengths range from 80 feet to 120 lcet. Tbe:laud:.is.slopmg,. t6% cm:rallavemgi=, .down_ to the east OWi" looking Soos Creek.headwater .area mtbe K:iug County I'm. "Boulevard Lane", which is din:ctly an.JllCM!t to 1be east. Due 1o the 1ocanona1ong 1beridge upper lots may view the Cascades and most homes will likely be daylight basement style. When home and driveway construction is complete, the site will be app11,1i1uately 45% .impervious sudace. Street access is from SE 1921111 Street via 124111 Ave. SE. 124• exists as a private gravel road but :IJJllSt be improved to meet Sub Aa:ess Street Standards (36 liomes utilizing); the grade is flat, less than 2%. This street does not tie on the subjectp;m:el being platted but is to the south, a 30 fuot R ofW dedication is to be~-No sidewalks exist in the area and this development proposes sidewalks on one side per code. v,.Y!?k A~ public S~(lilrely SE19l• CI) win,.~~ 1~4.,.. and will tenninate up the hill man 80 fuot diameter c:urbedwwle-sac.. Tow~;; King County Road.Standards of24 feet wide and ttansitioning to Minor Access 22 feet wide pa-mnent, curb and gutter and with S feet sidewalk on one side; the maximum grade will be 15%. Storm water within the devt:fopmeut will'bewllected bystreet-catdf basins and conveyed to aninfiltrationpondareaforrttentionlocatedatttie'north-eastcomerofthepope.ty. Watt Quality may be provided by~ aset!Jing pond.and.infiltration.pond.sand filter. Overflow discharge will be into the :Oat land midel" power Imes on the east side the subject parcel. This discharge waterwillilow:acros.,' 10'.bul&to 150' 1hru wetland then to Soos Creek headwater area. All:utility sysrem., arecum:utl.y adjacent orwitbm400:reetoftbepmperty. SoosCreek Utility provides sewer and water. A sewer manhole exists 60 ilet.'e!ISt oftbeproperty on King County Park Land in,a hip vo1taje power .:line casrnv;nt area. This area is likely now classified as wetland and pamits to e,rteni:r sewer will beJllllde by Soos Creek Public utility. Water is available from 12"maiiJs on bodi:ilie oorthand south sideof:theprupaty. Utilities Easements exist fur conncdim points at I92'°'. Puget SoundF.nergybasaTps main.in 192"" and o-vedrcadp.imary high voftage powcr m Ioc:atd auhe smith-west wtlit.i. No public strect pavement cutting is required to access sewer, water, power, or gas services. Soos Creek Plat TIR 3 By Jacques COnsultlng January 26, 2004 TIR Section Il Preliminary Conditions Summary 1...1.:e!::> t" The site is·located. on the bi~Soos. Creek at an elevation of approximately 400 feet. The western sides oftbe *~~slope{25%)andtmsslope'rednces as you go eastwatd where at theelllltrm. }A'Qi)Uty lme theslope isrelatm:ly flat (less than .5%) The north- eastein pw:wn ofthesitewherethedeta«lim poud.fflmld gois attlie 380-tootele,ation level There an: no 'wet lands on1he site although we llaods ate adjacent and the site is impacted by bufli:r. There:areamisofsta:p·slopc on site, most slightlytm:rthe IO·zisc:qualifier and·an are man made seweralJCl!l!lap, The u::fi:...enccdOeology &port iodkates slabJc soils. The site is covered with .fir. hemlock. maple, cedar:, and alder trees, predominately 6" to J 8" diameter with undermush.primatily ofOrc:gongmpe,. saJat and rems with a heavy growth of blackberry on the SOl1th eastem puttion. No means or mines exist Oil the site. Refer to the geologist Soils Report by "Geo Trends". TIR Section llL Off..m:e Analysis The one-'mile radius surrounding area.is developed and built out into approximately 4 homes per acre plats with.sporadic undeveloped aueage tracts; The property immediately adjacent to the westandsauthareqf'thesulp.site-. ~·.lo% acre single family sites.. The area to the north is undeveloped and the undevdoped 1owhmdlo the easti. King County Park Land (wetland under High-voltage Trammission Lines). et>->< t..:i uJ Upstream Alwy.ais Drainage .flow onto.the • popedy is fiom highLmtk to the west. in sheet or imderground flow,. with no sources nor valleys. The acf~ on the south and :north lire at cqualtcm!in and elewtioft, 110 surJiicel!ltonn watt:r WS between them. Flow off the site is to ff water 1iom a offirite an,a_ to fthesite is collected in an existing ditch and to fiowacross.160 oftlie site in: ao · along the northem border, flow over the hill appears to be sub-surface.flow m no visiNe drainage courses or =ision areas are noted. A site bi-pass is recmm1e1«W to deal with upJard flows ftom the westerly offiite properties. The soils on the watem300 feet (the high ground at the aest.ofthehill) ofthe subject site are generally 24" to 36" of sandy loam over a base ofhardpanglaciahil. · Ground water flow wa<1 seen in severalofthese pits at the hardpan level This plus the oftsife surmce and ditched flow shou1d he collected ffl curtain drain and tight~Jined oownthe hill mthe wetland below. This is recommended to efuriirurte any,crosion, slide. and or fuutiug drain ·is.,oes in the pwposed development. Soos Creek P1at TIR 4 By Jacques Consulting January 26, 2004 Downstream Analysis Downstream discharge will be into the headwater grassy area ofthe Soos Creek basin. Flows from the subject site will travd apploxio1ately 10' through bufrex·llml.wiih highly permeable sandy soils and 3% slope.. tiJell into the wctlaadaml flowing sub sudace in saturated soils :for approximately 200 feet to a 150' wide inundated area with shllxting water. Flow in this basin is southward 500' to a 48" culvert under 192"" tJe.u:onrimring southward in the .Soos Creek basin W10bstructed with the next culvert at SE204* Way {2 miles down stream). This drainage basin is relatively flat, Yz to l % slope, 100 to 300 feet wide with heavily vegetated wetlancI for several miles. Soos Creek does not app.:arto be passble by fish at this point. Note that the Soos (.'reek Drainage basin upslieam ofthis point is300 to 400 acres. Thus the subject seven acre site is about 2"A. ofthis. One linndred Year Flood Plain Flood plain is not en issue with this· site. Tn the event the 48" culvert was completely blocked, waters would flow o"\--er a wide expanse of road (SE 192"") at elevation 374. The lowest point on the site is 378. Flow oVl:r the WO\ald be OVl:r 300 feet wide and no restrictions exist south of the road. Therefure no backwater calculation is teqUired. Interesting observation was made with reguaril tu this on October 21, 2003 as this report was in~. A major tainsfunu.hlt thisareabreakingallre.xm:fs everrecoroed.asto amount ofrainfan A rain gauge at the site IIlCllSlllCd 5.2" falling between midnight Oct 20"' and Oct 21 11 (a 24 boursduration}and rains:c:ontimred. (1'mifsubsbmliallye,..wc:dotl the 1-00yearstonn event.) River11ndstream peakingwas estirna:hrl 10 lie at8:00am DDtlie-22"". The site was inspected at that time ror evidence of flooding and stream levels. At the ~ject site, there was no standing water at any Jnration on the ptopaty (not even smaltpuddtes) and no stand"mg water in the on site 4' deep test pits. Smmce watenftom Soos Creek were.approximately 170 feet east of the subject property and the 48''cuhiert under 19~ was at about a IT' depth and flow rate of about 1.5'/sec. ~ delIIIHStrating this parcel and the: 124111 access road has no flood issues. TIR Section IV. Retention and Infiltratioa Design Storm watec systems will be designed to include runoff fi'om all impervious surfuces, both roadways and roofs. Calculations will be per the 1999 King County RTS (KCRTS). Rainfall will use the SeaTac scale &ctor 1.0. The rainfall forlhe2, 10, 25, and J00year24hourstorm events are: 20", 2.9", 3.4", and 3.9" respectively. Detail retention design was not done :for this :report ahhough it was cbccked fur approximate sizing to ensure a workable site plan. Soos Creek Plat TIR 5 By Jacques Consulting January 26, 2004 Eleven test pits, spaa:d to cover the whole property, were dug~ xe the Gcotech Report. The soil type throughout the site is classified as "Alder" soil; sandy loams and grawl Comistcnt results were found; For the weslem balf(upper areas), 24" to 36" of satdy loam over hardpan. in all locations, not well .suited fbr peril: due to ground water at the hardpan level For the eastern half (lower areas), the top 12" is sandy Ioamtopsoil, the next 36" is fine sand, and below4 fi:et is gravel with course cobbles yeildiog iast pen::oJation rak:s. Si:e OeoTn:nds -report. The stonn water off the homes (roofarea estimated at 1,500 sq ft per house) and could be handled with mdividualsite infiltration on each lot where· everpossmle. For this analysis lot 1 - 15 (eastern half will pert adequately for infiltration , but lots 16 • 35 (the western half) would likely require tight-line down to the. retention pond. Runoff calculations will be ba5ed on new pa"Yl::lllCltt (roads and driveways), siaewalk areas and any homes without individual infiltration. This will be tight-lined to a, .settling pond. then into a large infiltration an:a/pond/field designed to 1eimie.t t water into die ground in a nanmd way. Thus point discha,ge of surface water into the wetland buffer arr.a will be mmimal; fivm only the pond o'Yffllow line and the site bi-jl8SS line. Elements will be designed fi>r the "Level I" flow colllml Note that the upper poitim oftbisproputywould lie in a Jevd 2 area due to slope but this development tight-lines totbe retention fin:ility which iJJfiJtmes and discharges into a level-I area with a slope of less than 3%. Based on thn:e test holes, 4 to 10 feet deep, the perk rate in the infiltration-averages about 4 minutes per inclL.. This could be sized to handle the 10 year storm peak. in the range ofl.O cfs. thus the pond couldk conpised as·a rdiltively small as a.setttingpooa and sand filter pond for infiltrating. Discharge coutml via orifice would size 1hc n:teutiou tequitto ent Other options such as a o uobiiP4 ion wetpun:hmd infiitn1tion could ~ to IDiJrimi:st: the iiciiity root print area. Offsite,.as.124• iswidl:lll!dliomtheexistilg20.lr.eUo24ied,.adifiiional·,eta•mfflfUiremcnt will be 111iiliowl;Dletotle low b etim dlisftiwQlll RQ(be imoikz I •in, pond. It amid be .b:amffed via:pp-Ylllll'IIDllcr&rom1mwa.,.e1e\1lhJDS, &11a.se ~ woukf then be directly, into the wetland te,:pl i, hig comp]ex. not l'llllmal. water quality system& The likely recommended approach would be to use nanow filter stip design·ak,qg the length of the roadway, thus ·directly flow thm segmeuto:I cud, into aswale area. Tims .the olil:tlow would be distributed along the road in tbe same manner that it natnrally and cuumtly Dows. The point of this discussion is that variousaltemativesare feasible,.inthe-areas provided. Actual design decisiuus will be made dumig the euginecrmgphase of this project. The dcci:ling mctor on how this is accomplished may depend on the Parks Department's&cision regarding use of the strip of.land :arfp:cnt to the roadway. It may be aJb::ated mpmposed:fi>£ a trail/pathway/sidewalk with ananuw filter strip aku:tgthe limgJb Soos Creek Plat TIR 6 By Jacques Consulting January 26, 2004 TIR Section V. Surface Water Quality Desiga Water quality at this site will meet King County·~" standards. The runoff fiom 191 51 and private roadways, wilfbe merged. with roofrunotr The fiicility will be: constructed to handle the requital water quality treatm.mt per the 199B KC SWM Water Quality Manual. Likely one of two options would be: taken, one, discharF to a settling pond and then to a sand filter infiltration.pooi.l.. or two, a·wmbimtionwetpondbelow:withinfillrationat higher elewtions. The final design would UlCOlpotate at minimum2 year storm event for water quality and the 10 year peak retention and roo year flows. The runoff from I24u, is recomende to be via filter strip adjacent to the roadway but bis is dependent on the Parks Department position with.respect to use of this wetland buffer area. TIR Section VI Conveyance System Design,. The KC RTS Method will be used to size the piping for computing peak flow from the-25-year event. The Roadway drain piping is will be an appropriately sized PVC tight line leading to the the pond area. TIR Sedion. VU. Not Used TIR Section VIIL Other Permits All Permits required fur platti11g will be fi'om the Kmg County DOES, This will include clearing and grading as wellasomstmctionofthe roadway$dstomi: system. The utilities design and constroctianw:ill be pcmrmed by Soos Creek Sewer and Water, and Puget Sound Energy. Fire department review a:rtificate will be from the King County Fue Marshall. Soos Creek Plat By Jacque6 Consulting TIR January 26, 2004 7 TIR Section IX. Erosion and Sedimentation Control Plan Protection comprises filter fencing·along the east property· line at the low point. Due to street configuration no.nmoffw mud will betrack.edomo public.roads. Dueto the soil conditions, nmoff of amd during construction isoot Jikc}y, Ifany oecurs at all during utilitieslllXI road. comtroction, it will flow into thenatnnd low area (east side of site) mrliCttling and i:ofiltration. Straw bales 8JXI straw spreading will be usedasrcquin:d 1o miuimi:mandcontrol erosion during · grading. Hydro-seeding will be med as required when construction is compk:te, to replace home site location areas cleared during the grading process Truck access fur construction will be at the site south east property comer with access from 124* Ave ... Temporaiy rock entrances per KC design manual will be used: 2" deep rock bed 24' wide by 60' long . TIR Section X. Bond Quantities, Easements and Declarations Bond quantities: see Bond worksheet. per King County. The 12ir"SubAa:es&publicrpedwayJO.Jbotright4waywillbededicmciltotheCounty (utilities in thestteet). The 191• Mioor.Aa:ess·Stteet 28Joot wife, or-appropriate, right of way will be dedicated to the County. Ten-ibot wide easeoeofs will be provided to the County fur access to the storm water system piping .if required thmug& any private ptope:rty. The Private Access roads, shared driveways, Recrcaoonspare 8JXI storm water infiltration pond areas shall be platted as tracts. Stormwater an::a may be dc,-,Jedto the City asreqtiiml. Covenants may be developed as required fur signifiamt tree retention. Ten-fuot wide easements within this area and along the course of water and sewer Jines will be provided to Soos Creek Utilities. A ten-fuot easement along the new public road will be granted to PSE for gas and electric utilities TIR Section XL Maintenance Manual Per King County Surfi!ce Water Design Manwd of 1998 Soos Creek Plat TIR 8 By Jacques Consulting January 26, 2004 Soos Creek Plat TIR Appendix A 10 By Jacques Consulting January 6, 2004 U lzU ! t• h i 2~ c~~~! eeee Jf;1t?f· ..... U ki,~~u•liUli ~ . ·''li i co C) I irn e:8a !u.;J!n• I Iiili! ~il , 11 1,,,a,,,,aaaJ~ J ~z 'Ii Ii I JhJ"lliiiillil' i,J I ! •·1 J' f a. - ~ 1 Itafiffilif (") z !, fl 5 .l f It ~2 ~~i 1 ~ll~~!d~Jniiii~~~i~iiJ!!t @ Jt•·f jfi''I .. • < '-' __ I slH II . IIIB IU <: 0 b'I Hi id f,thlu SOOS CREEK PLAT SITE PLAN !bu,o //.,\~'"J!:[l'~~\I, "I····" ~;/ -1'"~ ,. ' . ·~ PROPERTY DATA PROPERTYADORESS: 19100-124THAwse l£GAl DESCAf'TIONS: 5811 ~ Shed A PORTION OF THE SW SECTION 33, TWP. 23 N, RGE 5 E. WM lAX ID I ; 619!Dl-a2fll -0240, I. .Q220 SIZE: 6..9 ~ will one IXis&lg tK:l'IE on --0240 ZONING: R6 6 llu I Aae WETLANDS: Nooe on ,e, adj;;gnl wet1n buffer inpa:t STEEP SLOPES: Mas a::~ llilh 101:IZI bo!Pm A\IBUGe SUH• 1CC' I S12' z 16.2% FLOOD ZONE: NOl'II! PREvlOOSLYtOGGED: No~rmcer DRAINAGi: C(UIAINTS: CcudJA119' tom 1921*1!1!1:a*t ldp:n pr!vala ~ -400ieetlrom~ sile DRAINAGE: EIAStl.: Soos Creek WATm PROvllJl:R: Soos Om:. L11iity Oislrd SEWER PROVIDER: Socs Crw Uliey Oi.tltt:I SCHOOL DISTRICT: !<ant ARE DISTRICT: ~ COunl)" TRAFFIC cooaJIWJCYZONE: 7'Sl9 (~ OWNERS: Parc.l-G:260 UJ P lLC 13425 E Laa Kall'm'I Drive SE RentJn, Wtsl'til'lgb, 9e9 Parctl-o2'11 Jamn Thornp$0D 12208 SE 192'" Re.1ton, Wasimt,on Parcal -C220 Janie Ritt 1ZZl6SE 192"1 R811Vl, Wahingm ~ • PROPOSED SUBDMSION DATA PLATNAME: ~ OESCRIFTION: Utan,Mlm (5.,cxi,a:ieJ / LOT SIZE: Wd81 :a: Wt:, 75 let!I Lengal = 821D 120 ileel ha= 4.750b6:!00S:jbt PUBLIC ROADS.: ,-i0· 550' r:,f 2('-SUbaceeu ~ara~ (~ 36cti) / 300· Ill~' Subal:c:llls. sw..t a1 m:, *"-I~ 2DdtiJ I • s I ~·· PRNATE RQ.!DS; Mltl' 150" PrNa1e Ao::as& Traots ~ 6 du each) SHAREOD!UVEWAY: Ft;u-20.iwiz JNOIVDIAL.DRIIIEWAYS: '*1)'"-'" 16"Wiex, m "'2Z MMr' Attats Sl!aet 1.n:. ~ ~ ,4 c1u:J .1.1 / I :j;ri:, blcy•· · "/JJ.11·1 SITE DISTANCE ISSVl'..S: Nool, iis:tsas UCNd IIO!l 11:e! SENSITIVE JIMA ISSUES: 100' Wollaid Buller tnenl8::hes ........... STORM WATER A..OWCOl'fTROI. REQURdENT: L81f811 STORM WAlcR OUAUTY R..:OOIRMcNT: 8asi::: ZONt DEVELOPER & APPLICANT: """" ... ,.,,.. Bosioft.~Wtlf~U.C 13425 E: 1.aE-~ tmw SE RenlJn. Washirglt:r. 90059 Phone-425-22&-2145 Fat425-228-l5$3 ENGINEER.! JICqMIS CondlD; Na:" J;ir;qua ~ 2633 SW 153Plar::c, 81.rien, WEIShnJ!On 98166 """' ,,._,.,.,,, STORM WATER COPiTA.CT PERSON: Ra:&:i,ri;ri2J6.,]5;5.1617 I Jc I I J / I I I( ( ~ ~ ( 'L \· .. ,. n, c:, . . . 1 ·-. \ \ ' ' . \ !llt( [ I i "'- ~ I '2. I _t_J_j. {_ l 1 0 ,,. - -.. ~.· •• -~~~ ••• . ., !tf ~« • f2 I \ ~ 1~~~ \ ~i.-~ ~l<l~f ' ~ ,-j:!:Ef5 ~tf . -·~·----:L.r-~~sf \ t ' '£ t':' ,g," e ..,__ l I ,.:, ,., ;, ,i\ ? 2 g 3 • : i ~ .\ . . .. \ \ \ ~ r ~~ ~-\, > \ ~ I~ ' !1! ' \ i; ·i.~.;'.·.~·\'_.' ~-,:-:_;;;;;'.' -, "1.:;/"t.:~ • ,, '. ~fr r'~·;:; I' ;; "'" ,. -• < .''.' -,; • , c.,'L\ ,Jf ~:~~;: r-·f:;~-,~~,, ~Jr t· f:~ _,, GRAPHIC SC~ 1" .,50. ------0 50 100 150 KEY P88 lft16BY Pl. AT SITE COOSDERATJlNS 1. ll£PLAT S Rll SIHGLEFMID' 108, TIEWJORITY BEll3 DAYlDIT'BASaiENT STYLE. LOTS AU. ElCCEB) r.c STANCWl>6 FOR ui:.IMUM LOT SIZE. LOT AREAS ARE APPROXN4.Ta y 500) TO eooo fPNll lJIE 6MAUESJ' lOTWDJH IS WT. ALL CIWEWAYS WUBE lEB8 TIWt M GRADE. 2.ACCESS Rew> FROM SE. tP STREET"'" SEE'TIWFClmlD'( EHTERtfG AHD SITE DISTANCE PER. KC 8°'D STAHDARDS \'UJ.IIESARE BEi.OW LEFT"IURN I.AHE'THflEiStD EM tP' 3. 'PROPOSED STRefS MEET StJB,;l,CCESS, UIKlR-A.CCESS, AND PRIVA"JE.ACCEBS "TRACT STANDAACIS FOR PA\IEMENTWIITTI, CURBS.AN01.E'«JTHS PER 911 Ki. ROAD STANONWS EXCEPT™T A. VARI.VCEIS REQUIRED AS. THE.1.ENGT\! FROM.CENTERUE OF SE 1112. TO MIDPOINT OF FARTHEST ClJL. '[i;.SAC. rTIS 1250 FEEi' ANO NOADDrmNAI.. EIERGENCY ACCESS IS AVAJ.AIJ1£ QAADE.FOR-. PROPOS8l SE tlH er IS t,tt.. SEE STRfff VARIANCE .AJSTH:'.ATION FEPan'". 4.. A llD'OllTCUL-OE-&t.C181.-0C,.1ED (Jf1HE"F'ROPOSED Bl) OF124DI DUE TO THE5&0 PT· DmANCE II: FROM 1112'11. AND TD TIE FACTlttAT A. fUJlJRE ElCJcHSK)N Of 124"' IS UKEL V SlfCE IT PRCWIEi lHE.ONI.Y ACCESS TO 7.ACRES f.f' VACANT 1J,ND TO THE'NCRTH. !; t1£ElClSTIN0·12,lt11"A.VE.11E1STOIFHDENED;1ENGTlEMEIJ»IJPAV8). THIS"LES"FMTW;LY wmtll 100 FOOTWEIUtllBUFFERBtff IS lHE-Ot\l.'f ~amu.NCE: SEE-6"fRE8'" VARIAl«:E.IJSTFD~ ~. 'l. SBlEWAI.KS ARE PRDP06a)fOR ONE SilE CF SUB Nm MNJR ,-CCESS STREET6.1il.ONG 124 ,.VE lfflEAD OF,. 5' SllEWAI.K,A 1'lWUPATiiWA.Y, 1'l WDE BIOSWM.E SlRFIANO ?TREE PLJJrfTING STRIP.BfNEFfTNQ THEDIG COUNIY P.ARKS.DEPARNENT IS PRQPOSSJ. 11'11S 16 II: TI1E BUffBl llf«:A·RIJNrlNSPNW.I.S. T0TH6WliTI.JJI)~~ 7. PRIVI.TE PNIK 1111.CEOF 13,2e0 FP 1H REWIRED PER.390 FP FOR :M NEW LOTS; 14,&KI FP IS PROVEeD PLUS 3,UI FP OF 6TcEP a.cfE ARfA IS SET ASU fl ASEPAAATElRACT .. l ORANGE FACUTV SPICE. OF 20,9.'Ull IS SET ASIDEAS A TRACT, AJ..lHOIJGH l!ID'II, IS RESERVED N'.; WE1UNO BOFFERAIIEA. I. TWO FIU: HYDRANTS AAE PAOl>OSED. AT PROPOSED SE. 191 AHO DE CROSSING PRIVATE sners, 1llJ6 YEl.DNG Im, Of 11£ HOY$ wmtN 200 FEET ~ NOHli .loKlRi ~ 300 fifT. 0 "' " ITT "' 0 "' II ~ " :>! ::, ~ z ::l .. ci.ci {\J u "' e-,z < 3 <<t u en Ul "' 0, ~ 8' :: :z; 2 ~ ii!~~ f~;11 ! • "" ~ I>! r.l :z:: z: < B_OU~O. z j p., "" E-< .... Cll C!) z .... ~ ;:> Cll z 0 u Cll ~ ;:> O' ~ .... "' "' co 0, .. ,="' l;tJ -~ ll.Z,o "1 I (/) iZ ro "1::, ... ::, "' "' Of --Uca '° <uO ,_,j~ "'"'· "' <,,z "1 <D 0 z~:,:: ,= 0.. OJ " " "' "' :':l u "' .., " ~ µ;i~ I E-Cl) ~ E,-4 Z Cil N j "'> ~--P-. i:i:: 0) l{) ~ SAID~ t:i1Za5'-" ::<:I 1:;&]0>::;! j:z;:!O@..,i~ ~ Qf--<~LD Q:. ~;:'i ~ U ZN zWOI en~~~~ 0 rn::Jt:iiN 0 ~~P::-- Cfl z U") ::B 0"' ... ,-. "' -[I)" o-"' z m 0 :,:: 0.. SOOs Creek Plat TIR Appendh B 11 By Jacques Consulting January 6, 2004 Site Photographs Center of Property looking South .;,,....,l!IC"~-:...:o:·, Center of Property looking West NW Corner NE Comer ! •.. ' le \.' . -.,{z:: County Property on East side of subject property Soos Creek (completely overgrown) 250' East of subject Adjacent Property to the North ·r' --.~~ .- ------1 -. -r-- , 1- ,- ! ·-- \. \ ' ' ---,. __ )·-----·------- I I -l~~~) ' ' /::;···-J ! f f~_,..-\ ~t~IIlLY~ C··"" -. < ,, r---. J ·-+". r--. \ \ -I . r ·l .. ·· I t"·~ -~ .· •-' Nr......,LinN a.r-R " ~-~SECl.-N- N---c::]- c... Senllllw• Slope .L.8WI 2 ........ G.~\04 (DEAS ! • 1--J _J_,_ '1-. \ ,' ·.,· ' \ . '==i ··'Tl \~. ··a· .. ·. L I .· j -< -' ·, ·.· ·•·.~ vaL . . t~ rK. ,-1,·-c.L 1. [_J ·rJ"r. q l-1 1 : · ~, I l-.irr1.., ~'t-. -.i.-' -'I·.· ~· I /-. ··\ \ ' ' I ' '_ I L..J _, ~ HIZaNt lwel 2 Areas DA lmlLND ,,.._ ~ FIOw Control R&qulremM1tl 1.9Wlf 1 FC Ania • Leval2FCNN -Lewlt 3-l'C Arn '\ ---; I •-t- II' ··( . . ~J I ' /-/f"T'TJTT\ C /,./_LL11:LLLL. ', . ------- -·-r·-y-,-·-· · _,, ___ T_"<, ··· · . •· ... -· · I I I · ;· · · -· i I ; · ·· · I ' I I I , ' I L •... L .. L---,-....:. _ -----'-··j I APPEit ___ · ·~----, j ' ' ' ' ' ' i ' ! \ I A / 1, I, ~ 111MComrul Raqoire1Mrtt$ CJ1.eve11FC~ -Llwf2FCAfN NCity- 0 -400 F!et .1 .. !!001"1 ® '°"' CCunty I I Tht~"*dacl'!"'ltil:11111Plwl-..~~ .--j I lft'IICll&ny*"'twn•~•-""'"~'° '. .. wll'ool.liMb..lO'ltC-..--...m ,,\ II l\lpW ...... Ol'_....,llllftlilO,~,-t,1111, t · · ,• . ~__....._,...._«rw,i.11111w, .. o1 I ._. ·. -.._~-~ ..... ratlllo~kifttli ·-\ 1-"---,..---~------.. . . =:.-:::;~....:i·:=.:-... ~t l '~,.....~ .. ----•ii.~ \ "·.···· -...... ~N,f--...... -~" l_ ----_ ·.·, -~IIWIPlt"*""°' .... 11¥-*'-'~lllf + .... j I ·-1 i ~ 1l ! 0 J ~ ' ~ ~· I fl f•r u • ,l!f i t I ijJI11 1;11 I i""1P l·i fffi,P • I ,f,f ,111 ® ii• ·i'Ui!I : JHIHu~u! I ' I I II A. Background 1. Name of the proposed project, if applicable: SooS CR~I<.. ,.f' ..... ,-:::.·1 2. Name of applicant: ~ t Cle 8"cS 'T"U.'V -~ .JSc. .r'{'>N <t>e !(c,../ <t.t>~-<.<"-1...<.:>e1-1~ Q..~ ·' 3. Address and phone number of applicant and contact person: /'s~er c. Lk, ~1.C:-&.J 'Dl'Z.. .sf{f .. ~h/) l...r,;;:,,..e r.J ' ~ .} 0 .r"} 4. Date checklist prepared: j/>,N ,'q J 52..,.,u_Lf 5. Agency requesting checklist: K c r/ e,. c.o .... ,.....,-y 'Di\) 't'--s; 6. Proposed timing or schedule (including phasing, if applicable): Pt2<f-Lt ~ p~,,,. .. f=-1 ~'-f'<-,....-I c.:::,,..r.,'T1t._ V c..trl.j ,...J Rs f' r' ,c_ .:; v I-=> 1...... . _5' 6"' 'I '"?.. ,S -l ~ P,·(? (P ~.:. ,r,.,., <.... ~ -..r •"'-f• C' 2.. ~ "r 2'P q5; ( 'Z. a~G · 7. Do you have any plans for future additions, expansion or further activity related to or connected with this proposal? If yes, explain. p-c,s l 'o '-'(',. v-rc ...a.t:-'°T1! 'r',....<. -ro ,rrc <.. v ot: T,-1-~ 0 Ac.ftA-'-f'-"""C.tf-<.. ....,-.;:, ·-n-1 41" ,oroA"Tl-1 , ___.... ,,.._,.If...,, irt<-sra~c,r ct.e.c.., "'-4-rr..r-../ I,.. oJt. 0 l)'t. ~, -* Oce.P.-P£S • 8. List any environmental information you know about that has been prepared, or will be prepared, directly related to this proposal. -~ ~;: ~} :4~ [D) J_.n4PD002 SEPA Checklist lc-cl<I-SEPA 4/16102 Page 2 of 19 9. Do you know whether applications are pending for government approvals of other proposals directly affecting the property covered by your proposal? If yes, explain. 10. List any government approvals or permits that will be needed for your proposal, if known. Fc:>«..>!=rr -~~ ,r-e,. Fc:a f-'. tT (} t2 ..... t) 11'"'~ ~ <!'-a. M l 'T 11. Give brief complete description of your proposal, including the proposed uses and the size of the project and site. There are several questions later in this checklist that ask you to describe certain aspects of your proposal. You do not need to repeat those answers on this page. (Lead agencies may modify this form to include additional specific information on project description.) .su81>1,n1)~ jft..1',:>'I b:=r e,,c.,z«:..r '"'1"C ;Jr t.",::i 12. Location of the proposal. Give sufficient information for a person to understand the precise location of your proposed project, including a street address, if any, and section, township and range, if known. If a proposal would occur over a range of area, provide the range or boundaries of the site(s). Provide a legal description, site plan, vicinity map and topographic map, if reasonably available. While you should submit any plans required by the agency, you are not required to duplicate maps or detailed plans submitted with any permit applications related to this checklist. SEPA Ched<lisl $'€C 33 Twt' 23 R. S""-~ lN M l'l/Oc -;Z.'-{ A~ St.., Kll"ti--C"'c..nvrt p~ce=-l ;J:;F" 6/Cf9o0 -c;:,·26 o -c.l. '-,c -o 2.'l..0 lc-ckl-SEPA 4116/02 Page 3 of 19 TO BE COMPLETED BY APPLICANT B. Environmental elements 1. Earth a. General description of the site (circle or check one): 0 Flat 0 Rolling ~Hilly 0 Steep slopes 0 Mountainous 0 Other ---------------- b. What is the steepest slope on the site (approximate percent of slope)? ;2.S 7., e ,J 1,.;c. .... ,J.r,e 17?, ol/~~ TUJ6 ~6o; <W=-1"V'>N ~(' _ l.f ~"'7;,. E?<-u-r FeL U:>' R.t.S"IE. -.S~ G-~14 lt..(:-tibl{'T"° c. What general types of soil are found on the site (i.e., clay, sand, gravel, peat, muck)? If you know the classification of agricultural soils, specify them and note any prime farmland. r I ] ....; 'f _n..,-rb O\i~ e_.,,o (U(!-<i"'"IC.fl ~ d. Are there surface indications or history of unstable soils in the immediate vicinity? If so describe. Ji.:) e. Describe the purpose, type and approximate quantities of any filling or grading proposed. Indicate source of fill._ f"l( ,-fl~ -µ·.:, I MfC"'-'ft'P f'~ ( I.... -Cll.~L ,~alt. dU, M) «~s SEPA Checklist k:-ckl·SEPA 4116102 Page4 of 19 EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT f. Could erosion occur as a result of clearing, construction or use? If so, generally describe. MIMI 11.PA.. g: About what percent of the site will be covered with impervious surfaces after project construction (i.e., asphalt or buildings)? ~Ye::. h. Proposed measures to reduce or control erosion or other impacts to the earth, if any: • s1c..r ~c. If • ST(l,,,v...1 ,-,.,? R.~.o ,r~ se:-...s .. -.'1 2. Air a. What types of emissions to the air would result from the proposal (i.e., dust, automobile, odors, industrial wood smoke) during construction and when the project is completed? If any, generally describe and give approximate quantities if known? ')) 11 S ..--M < tv4 ~ A M '-" II ~ F-rz-' .-\ 2.;::> ..:,a -'.) .;:,-=, "' c.u '( I) J I!: l< C'~. 0'1'-~ b. Are there any off-site sources of emissions or odor that may affect your proposal? If so, generally describe. SEPA Checklist lc-ckl-SEPA 4/1fy()2 Page 5 of 19 EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT c. Proposed measures to reduce or control emissions or other impacts to air, if any: "'""~ 3. Water a. Surface: 1. Is there any surface water body on or in the immediate vicinity of the site (including year-round and seasonal streams, salt water, lakes, ponds, wetlands)? If yes, describe type and provide names. If appropriate, state what stream or river it flows into. Soos QR~ 2. Will the project require any work over, in or adjacent to (within 200 feet) the described waters? If yes, please describe and attach available plans. "(&-cs..r..rt=-c.n.rw -TU s~ ,-...~~Lt:-t.rr--t-t ew <.-t (!=, rN ~ /..::, 0 l $ <.I 'fl=. F, (j"J(:: ( <i ,_ri) ~ .-n.., (:- U-1 (s-~ VOL~ I!_ ~,.,. ~ <...qv<;,_<:5°) 3. Estimate the amount of fill and dredge material that would be placed or removed from surface water or wetlands and indicate the area of the site that would be affected. Indicate the source of fill material. SEPA Checklist I ,1 flu F-~ l¥l. fu=> 1,..J"€-'(,_~ 5 lc-ckl-SEPA 4116/02 Page 6of 19 EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT 4. Will the proposal require surface water withdrawals or diversions? Give general description, purpose and approximate quantities if known? M.<::l 7 / -.:::::== # 5. Does the proposal lie within a 100-yearfloodplain? If so, note location on the site plan. µo -p,,-\)j...,.c::~ I 'f' ;i.a;oVE. 6. Does the proposal involve any discharges of waste materials to surface waters? If so, describe the type of waste and anticipated volume of discharge. J,S<:> b. Ground 1. Will ground water be withdrawn or will water be discharged to ground water? Give general description, purpose and approximate quantities if known. f,1'¢ 2. Describe waste material that will be discharged into the ground from septic tanks or other sources, if any (i.e., domestic sewage; industrial, containing the following chemicals: ... ; agricultural; etc.) Describe the general size of the system, the number of such systems, the number of houses to be served (if applicable), or the number of animals or humans the system(s) are expected to serve. ,..,~,.re SEPA Checklist lc-ckl-SEPA 4116/02 Page 7 of 19 EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT c. Water runoff (including stormwater): 1. Describe the source of runoff (including stormwater) and method of collection and disposal, if any. Include quantities, if known. Where will this water flow? Will this water flow into other waters? if so, describe. j< U/V Of"-(< r,.rfb Jr< l> S......___.._(°-/ IA,~ f ~ //,-J ("/f."'7(""1"7,J ...J ,:,O.C. tf... q ~ydl(,CU,'41 ~ • -r,L,t:,-.l <.J'~,,.,.r.O ·re W-&'°l,o.r'I) 'ifv ,~,--.,...-.. j (... ,) ~ _p::::,o.S Ci<~ f;P>Sl,J 2. Could waste materials enter ground or surface waters? If so, generally describe. IJ,.:) d. Proposed measures to reduce or control surface, ground and runoff water impacts, if any: 1?~'77,....J f'~~ T ,,.,rcu..-r7FA'-n~ 4. Plants a. Check or circle types of vegetation found on the site: pi( Deciduous tree: alder, maple, aspen, other jB:. Evergreen tree: fir, cedar, pine, other ~Shrubs 0 Grass 0 Pasture Q Crop or grain If., O Wet soil plants: cattail, buttercup, bullrush, skunk cabbage, other .,., 0 Waler plants: water lily, eelgrass, milfoil, other ~Other types Of vegetation tlLo--<:.to:: U~ift SEPA Checklist lc-d<l-SEPA 4/16/02 Page 8 of 19 EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT b. What kind and amount of vegetation will be removed or altered? ,t..LL -Cl «-tt C......tT c. List threatened or endangered species known to be on or near the site. d. Proposed landscaping, use of native plants or other measures to preserve or enhance vegetation on the site, if any: L./>rt.,J ,n ) s /Ht" .E) .s,;-(l.f-C-r ,,.,-,:( ~:S. 5. Animals a. Check or circle any birds and animals which have been observed on or near the site or are known to be on or near the site: -. :,. ,.r I!.--u tu!. ?.,,.J s ,., .. iJ O Birds: hawk, heron, eagle, songbirds, other 0 Mammals: deer, bear, elk, beaver, other O Fish: bass, salmon, trout, herring, shellfish, other b. List any threatened or endangered species known to be on or near the site. ,uo;J¢.. c. Is the site part of a migration route? If so, explain. SEPA Checklist lc-cld-SEPA 4/16/02 Page 9of 19 EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT d. Proposed measures to preserve or enhance wildlife, if any: 6. Energy and natural resources a. What kinds of energy (electric, natural gas, oil, wood stove, solar) will be used to meet the completed project's energy needs? Describe whether it will be used for heating, manufacturing, etc. Fl~!T11.I ( ,....... '-' Cs~ ] f2.8 • D (WC!I-_ "- /J ,.,,-r-v¥(. «-'-(t.e,,5' -'->"~. b. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. kfO c. What kinds of energy conservation features are included in the plans of this proposal? List other proposed measures to reduce or control energy impacts, if any: J,i.;:,rE SEPA Checklist lc-dd-SEPA 4/16/02 Page 10 of 19 EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT 7. Environmental health a. Are there any environmental health hazards, including exposure to toxic chemicals, risk of fire and explosion, spill or hazardous waste that could occur as a result of this proposal? If so, describe. N'O 1. Describe special emergency services that might be required. No~ 2. Proposed measures to reduce or control environmental health hazards, if any: NONE_ b. Noise 1. What types of noise exist in the area which may affect your project (i.e., traffic, equipment, operation, other)? l'-1 Q .., 'I'£ 2. What types and levels of noise would be created by or associated with the project on a short-term or long-term basis (i.e., traffic, construction, operation, other)? Indicate what hours noise would come from the site. SEPA Checklist s 1,rt:-c. ..... 6'><, tvG --a '-1.-.--1 r c.-.r.:.w-. 1!~ ~D Fr<:.l!'F,r ~ C.tJ-A 'N .J'..,, i,.J, lc-ck~SEPA 4/16/02 Page 11 of 19 EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT 8. Land and shoreline use a. What is the current use of the site and adjacent properties? \rPC"'wl -fiU"-'TJ.1 -t /F~'J te€-.J 1,J>6vC4'K .u,.. MS -.. r:,. u<rl,I 2(_ ~ ,.,- b. Has the site been used for agriculture? If so, describe. t,r°' ) /s: rl<it..-n ,..-u. '( Gfu>.S.S ,i.~...i-f' c. Describe any structures on the site. d. Will any structures be demolished? If so, what? e. What is the current zoning classification of the site? f. What is the current comprehensive plan designation of the site? '/!. " g. If applicable, what is the current shoreline master program designation of the site? - SEPA Checklist k>d<I-SEPA 4116/02 Page 12 of 19 EVALUATION FOR AGENCY USE ONLY ·, TO BE COMPLETED BY APPLICANT h. Has any part of the site been classified as an "environmentally sensitive" area? If so, specify. i. Approximately how many people would in the completed project? _..t!----3 .T ~f-'lt':5' j. Proposed measures to avoid or reduce displacement impacts, if any: fl"~ rrt---~ 'l>IJP~e<:_~ k. Proposed measures to ensure the proposal is compatible with existing and projected land uses and plans, if any: "--' ,v(, c__c.) '-' ,vi'( ~I" ,t..;i .-Q--<-..S 9. Housing a. Approximately how many units would be provided, if any? Indicate whether high, middle or low-income housing. Falt. 1=-u-rui<..11: ~., f-'\./~L~ ,P.,C1C..~.P L c~ j.J-u " S l",S b. Approximately how many units, if any, would be eliminated? Indicate whether high, middle or low- income housing. SEPA Checklist lc-dd-SEPA 4/16102 Page 13 of 19 EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT c. Proposed measures to reduce or control housing impacts, if any: 10. Aesthetics a. What is the tallest height of any proposed structure(s), not including antennas? What is the principal exterior building material( s) proposed? ¢ /J/A b. What views in the immediate vicinity would be altered or obstructed? c. Proposed measures to reduce or control aesthetic impacts, if any: 11. Light and glare a. What type of light and glare will the proposal produce? What time of day would it mainly occur? b. Could light or glare from the finished project be a · safety hazard or interfere with views? SEPA Checklist lcxkl•SEPA 4/16102 Page 14 ol 19 EVALUATION FOR AGENCY USE ONLY TO BE COMPLETED BY APPLICANT c. What existing off-site sources of light or glare may affect your proposal? fy<>~ d. Proposed measures to reduce or control light and glare impacts, if any: tJ' 0 r-T'fi_ 12. Recreation a. What designated and informal recreational opportunities are in the immediate vicinity? /t-t> Ja-C6v-r ~ It:.., t-1'(, CJD, f' ~IC '-~- fll. t. l'o5 J,rL. ~,I e.c..u O H> ..:'l"lo .fl:7 7- 0 ~ S' ~ f',.,z1c:.. ~ .~ .~.a- ~ 11S'E-r b. Would the proposed project displace any existing recreational uses? If so, describe. c. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any: f ~.::, ~o s C'-P If'\ I'~.:. in~ ~ ,.J ~ f'<Pnt.lc::. L..o,v"D -J'/0~\IC::.. ,..K_.~S 'TX.~ V ,, • SEPA Checklist lc-ckl-SEPA 4/16102 Page 15 of 19 EVALUATION FOR AGENCY USE ONLY rTO sECOMPLErEO sYAf'_P_L_1_cA_N_T ____ , -- c. How many parking spaces would the completed project have? How many would the project elim\ate? ~ lf f'&. tJ.:::.us·.£ (2..1,...i t;.~~J 2..1, •• i M.ltr Cl d. Will the proposal require any new roads or streets or improvements to existing roads or streets. not including driveways? If so, generaUy describe (indicate whether public or private). '(t::S ~r rt•iV'-'>< A<?.1:.c'"s~'lP,,6'-IC. 'f c::,,!"::> r S:,.; LS o (:'. t. C"-~.) it:.) ~bcl' f',,:.1 ... -... ~ f<\<.C:.6f ..'f.f"y;tS"1i.,r6-Guv~ S~ ut<-'-Jt~ 1,.111>6-r& 'I~ .. e. Will the project use (or occur in the immediate vicinity of) water, rail or air transportation? If so, generally describe. ,,,-u f. How many vehicular trips per day would be generated by the completed project? ~lf;k~no~=~--..., indicate when peak volumes would O" . .£ fl.lif'l!-4-, ,,, sr S1"4r<...~ ~ • .1-b~IF'S ;s~-~111.. .9f"9 0 f &f,. ,ri ::c' :,J's"O/>i'!>'r' ( 'f1't ~H C.. ~ ..r e '-J (( A,v-C. '{ # ff""'-11'1 ?,-, P·~ ~c ,_ r<rr't"'tt.~...r~ c .. <.J ··" • g. Proposed measures to reduce or control transportation impacts, if any: SEPA Checklist lc-ck~SEPA 4116/02 Page 17 of 19 -------- EVALUAT~O~N I FOR AGENCY USE ONLY ----------------------~-------·--.. TO BE COMPLETED BY APPUCANT 15. Public services a. Would the project re~.ult in an incre-aSed need fof µubi.c services (i.e., fire protection, poiice protection, health care, schools, other)? If so, generally describe. t;. ProfµJ~i .-rtloo~x,t·es ta reduce or watraJ direct • f • •• • "f 1mpac.s on puo11c services, 1. any: 16. Utilities j2f i=lprtcir:ity .a Natural gas 1::3 Viater ~ RP.fus.P. s.P.rvir:P. 12-:: Telephone ,:S:.Samtary sewer Q S!:!µfa; s}"liit:m Q O!her \ I ! I I I I l l . . I ,{ j ('......,.-;.;_y·<-. i b. Describe the utilities that am proposed for the project, the ullltty providing ihe serv1c..e ano tne general C011strui'.Aion activiii.;s en the site or in the ;mmediate vicinity which might be needed. 5'ooj f' ,; 'f! A(1f;i('V) I \ j I I I EVALUATiON FORAGEtiCY ' ' I I ' .. C. Signature The above answers are true and complete to the best of my knowled9e. understand that the lead agency is relying on them to make its decision. Signature: _ _,,fl7--="--..-cu)=..,,__,.~=~-------'==-~-_.,.--------- ' SEPA Checklist lc-el<l-SEPA 4/1M}2 Page 19 <JI 19 SOOS CREEK PLAT TRAFFIC and INTERSECTION REPORT fur PRELIMINARY PLAT APPLICATION For the King County DOES: SUBDIVISION FILE _ A03PO?JJ6 _ ·, January 6, 2004 Richard A Boston Boston Design and Devek>pment Co LLC 425-226-2145: Neal M )"'lQ.U"& P.E. Jacques Consulting 206-242-5322 Soos Creek Plat Traffic Analysis 1 /9 [[i ,:C rE ~ ~7 rE '[ JU FEB 4 2004 ~ By Jacques Consulting January 6. 200<l KC. D.D.E.S. L04PE>002 TABLE OF CONTENTS I. Project Overview II New Street Require111ents III. Sight Distaace Ceasideration IV. Left tum Lane Consideration V Intersection Geometry VL Appa..nde.A WSDOT Design Manaal exttrpts VII AppendixB Soos Creek Plat Traffic Analysis Tnffie Count Data 2 ' ' By Jacques Consulting January 6, 2004 Section I Prajeet Ovcnletw and Existing Candffiuas The project amsists of p}attiug and developing 6.9 acres to 33 to 36 Jots located approximately 300 feet oorth of SE 192nd Street. Three existing buildings are on the property between I<n.'"' and the site which are accessed via private gravel road (124th Ave). Acee~ to the new development would be via and extension of 124th Ave SE northward from l 92nd.See site plans. Safety design issues, considered in this report, are fur the connection to the public roads: l. sight distance 2. left turns 3. intersection alignment Traffic Concurrency Certificates have been issued by King County for 46 new lots fur development on t~ parcels. Section II New Street Requirements l The existing 124111 private gravel street must be paved and improved per the King County Road Standards to public subutbm Sub-.Acccss street standards. This 490' street requires a pavement width of24 feet plus curb and plus 5 foot sidewalk on one side. The minimal right of way is thus 30 feet if served by midcrgrollllli utilities within easementli.. Any additmmd featmes such as mail boxes, etc shall be within easement areas. The grade will likely fullow the existing road elevation with no cuts and fills except for roadbed gravel A new public 5treet, likely named l 91'" Court, will extend west from 124 lit and will terminate up the bill in an 80 toot diameter curbed cul-de-sac. This shall be a 24' Sub-Access transitioning to a 22' Minor-Access street, with curb and gutter and a 5 ieet sidewalk on one side; the maximum grade will be 15%. This will likely follow the existing terrain with minimal cuts and fills. No sidewalks exist in the area and this development proposes sidewalks on one side per code. Soos Creek Plat Traffic Analysis 3 By Jacques Consulting Janua,y 6, 2004 Site Distance Exiting 124th Ave SE From the Proposed Subdivision '· Soos Creek Plat Traffic Analysis Looking to the East from 124 1200+ feet visibility Looking to the West from 124 800 feet visibility 4 By Jacques Consulting January 6, 2004 Section Ill. Siglilt Distance Analy»is Street access fu>m SE I9i-Street via 124111 Ave SE involves no constraining sight distance issues. 192..i is classified as a two Jane Arterial with a posted speed limit of 40 mph. Stopping and Entering minimum dishtt!res are per table 2.1 of the 1993 King County Road Standanls Manual The R':qUired minimal stopping sight distaocr is measured fu>m drm::rs eye at 3.5' to a object 6n high at the intmicctiun midpoint { on the west side distance is increased for the approach down grade). The n:quin:d minimal euteting sight distance is m:mured from the drivers eye 3.5 feet high and 10 feet back fu>m the rogc of trawled way to a w;hicle 425' high. For both stopping and entering, all cases the regµirernent is met. Note photographs of entering sight distances. ·, Actual measured villibility onto 192nd exceeds 800 feet in both directions,_ To the east of l24'h the visibility is ,:xceeds ~ mile but for this a.,alysis it is measured at I 000 !e::t. To the west, eastbound traffic approaches on a downhill grade. -----Required-- posted 40mph Stopping sight distance from east 325 Stopping Sight Distance* from west 425 Entering Sight Dmance 555 worst case 55mph 550 740 750 *increased by 100 and 190 feet fur 12% grade. Soo$ Creek Plat T raffle Analysis 5 --Actual-- _ Measured 1000 800 850 By Jacques Consulting January 6, 2004 Seetion IV. Left Tuna Laur Conider:!ltien Left turn into this development is not _an issue based on WSDOT standards . The WSDOT l)esi8n Manual (Sept 2002) was comulted to investigat.e left turn lane requirements, the design guidelines are specified in figure 910-98, note appendix A. For worst case scenario with ,espcct to left turning mto the~ plat, the 4:00to 6:00 pm peak was selected. The combined east and west botmd traffic on l c;l."'1 of 121 l DHV (peak how volume) is used. note appendix B ror traffic counts. At a posted speed limit of 40 mph, this would warrant consideration as a reqpirement for a tmn lane if 1.8% • 1211 = 21, 7 peak hour left turns were made into the new development. Per !TE standards 1iJr daily average trip generation is IO trips / dwelling unit and assuming 10% occurs at peak traffic hour yield from 34 new lots plus 2 other existing homes -36 DHV to/from the new development and neigbb.,dxJOd. Considering this peak volume is at a PM time, we 8S"'nnc 65% are lWAniog home and 35% are leaving (per ITE). Of tbD9e l'dumiDg, assume 33% arc from the west (tlaveling eat-bound) ,equiriug a left tum; while 33% are from the south and 33% from the east not invomng a twn lane. Thus this f9fflP'lt8flO't yidds 36 DHV•0.65*033 = 7 .8 rk hour left tlJlm. This is well below the 21. 7 requirement threshold. Additionally, adequate circulation exists such that if traffic volume made left turns difficult driven may easily choose a hmnewanl bound route that avoids any left tum (thus entering via a "right tum" or "stlaight across" enhance into the development}. There are ample major arterials to allow that choice. HoDLWdld bound traffic from the 167 freeway would be cotllin,g eastbound on either SE20811l or SEIKO*, then tmveting via either toslll Ave or 12411> Ave or 140"' Ave to the development. .Another point of discusion is the existing high volypy, of left toms Q!!1lOSAA the .su!tiet,;t deYrufll)ID!'gt West bound traffic on 192'"' frequently turns left (southbound) onto 124•_ The subject development bas no imp,wt on this issue as west bound woukt make right turns into the development. lt is understood by neighbors and per past road planning docwnents that the County may widen l 92 00 (to include turn Janes) in the future. This is not required fur this development but woukt be a nice convenience fur the residents. Soos Creek Plat Traffic Analysis 6 By Ja(:ques Consulting January 8, 2004 Section V. Intersection Geometry Design The subject development proposal is to utilize the existing intersection geometry, the only change is to provide 24' paving (over the existing gravel 124th) curb and sidewalk. Note on the plat that the proposed northern leg of 124th is centered on the intersection centerline lbr about 40 feet then jogs to the west. This is due to the situation that the County owns the land to the cast of the centerline. A request bas been made to the Parks dcpm1:mcnt tD aBow the roal to run straight, centered on the section line. This is under consideration by them. It appears to be fi:asible and it is very attactive to them if instead of a 5' silewalk, a 12' asphalt trail or path is provided. It is recommended that the KCDDES encourage partial use oftbis County land and allow a path in Jue ofa sidewalk. The subject intersectioo, 192• and 124th Ave SE is as shown above is busy and critical. If the Cotmty budgets are approved to improve this intesection, the County p]aq and design goal will likely be to provide: safety at the lowest reasonabJe cost. While the proposed development's low traffic volumes will not afrect Cotmty designs, the geometry ofhow this plat's proposed paving and sidewalk improvement of 124* is !Dldc, oould. The design that would maximize safety and mioimin: cost is ooe in which the south leg and the north leg of I 24th are aligned. The advantage to the public is: one, safer intersection at lower public cost, and two, safer sight distance, and three, public access to public park land, and four linking and ext.cntion of the north-south trail system. Soos Creek Plat T raffi(; Analysis 7 By Jacques Conlulting January 6, 2004 I KEY: B9lclw' 'l:IJMl. Slcngrlnat nuMfllr WI! .,. -----....... 11 Nt au driCl Appendix A 1-----------t-----+t+--+ 1100 i-------1----~----~----+-1---1-J....._--+ IIDO ~ 25 20 15 10 5 'Iii Total DHV Turning Left (sllllla tun1ng-1-.II) (1) OHV Is total volume from bo#l CllrecflOns. l!;) "r.~~ (r ,~k) µ.,., Vi. hr>--< (2) Speeds are posted~ Left.Tum Stonlge GuldeUnes (Two::J,,ana, YM1gn1flW1> Flgtn9f0oll lllt&a tl!!!M MG,-., n....-4W040 C'-~·· ., ~ 5DO 300 0 ·, 4/21-Wlti3 Kiag Ceanty Tnaflk Cents fer SE 192'"' West Leg 4129-5/211063 King C01111ty Tnftk COllnts tor SE 192'"' East Leg Soos Creek Plat TIR 10 ·, By Jacques Consulting January 26, 2004 \,uii=ST LE=& ftAft'lC .... •• ~CWWWi DIRP ,: Olf .....XC-8 aa u:t ,n •m • w ..... , ... {>134) (30IOW) - 3 Dl,T COllln' Jlli&i•.-.= AND< !ll, 200) ,. •• .1.5 llll ua:a. ;n 22 23 :u ---... -.... n:i ur -1 D 26 zo 27 0 0 0 2 0 20 16 :u 0 0 0 3 0 '1 10 1t 0 0 0 4 0 u 10 c; 0 8 0 s 0 11 9 • 0 0 0 '6 p •• .... 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BINI 1717 _ .. _, t&L 4,~Jll-1415 llu: +25-JIHMI Pl'o),d, SOOSCFEBC PLAT -, __ L~II[ ........ 15 Job Dot« ,.,, .... -...... --.., "' "" Aulhortzed U..: .. .....,.._.,,,_ ... :'!!_ .... =~-=:;% ::::..~- A!rmit A96"C)'t '""""'" ts!l!Wd for: PRELNIHARY 1/15/0-f .... ShMl nil~ PRS.MNARY LOT LAYOUT Sl'lfft N(,.• 2 .... , ., Whittaker, Bruce From: Sent: To: Cc: Subject: Foley, Steve Tuesday, September 28, 2004 3:49 PM Claussen, Kimberly Whittaker, Bruce; Kahan, Josh Soos Creek Plat L04P0002 Kim, thank you for the opportunity to look at the revised submittal for the Soos Creek Plat I noted that the geotech report does not include complete soil logs, that the percolation tests were not done where the infiltration facilities are proposed, and there is no indication of the soils present below the bottom of the proposed facilities. Also noted that the engineer took the raw percolation test data with no adjustments or safety factors to do the preliminary facility design calculations. Based on the information contained in the the submittal, I am concerned that the proposed infiltration facilities will not perform as indicated. I attached our comments on the previous version of this project for your reference. Let me know if you have any questions. --Steve FW: Soos Creek Soos Creek Plat Plat L04P0002 L04P0002 Steve Foley Senior Engineer Water and Land Resources Division 20 I S Jackson, Seattle 98104 206-296-1973 FAX 206-296-0192 1 • .. TEC Project No. 294-JMA Taylor Engineering Consultants PRELIMINARY TECHNICAL INFORMATION REPORT for Soos Creek Plat King County Tax Parcel Nos. 619900-0220, 619900-0240, & 619900-0260 Subdivision File# A03P0286 LSUD File# L04P0002 Site Address: 12216 SE 192nd Street Renton, Washington IQ! •--=:· ""'---:c' l < ._......., ·-. -ri ' . ·--LI I : ,·:cc r---\ ·.'=. I r-1' --· I I i -c•,· .... ..Ji.:..;~ '; ',I 1 6 2GC~ !:::,J -~ c· -·-, D.O E -, -.:s. Prepared by: Loma M. Taylor, P.E. Date: September 15, 2004 205 Front St. S. • P.O. Box 1787 • Issaquah. WA 98027-0073 • tel. (425) 391-1415 • fax (425) 391-1551 • www.teccivil.com • '. , Preliminary Technical Information Report Soos Creek Plat Section 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Appendices Appendix A: Appendix B: Appendix B-1: Appendix C: Appendix D: Appendix E: TABLE OF CONTENTS Description Project Overview ........................................ . Conditions and Requirements Summary .......... . Off-Site Analysis ................................. . Flow Control and Water Quality Facility Analysis and Design ................................... . Conveyance System Analysis and Design ...... .. Special Reports and Studies ......................... . Other Permits ............................................ .. ESC Analysis and Design ............ .. Bond Quantities, Facility Summaries, and Declaration of Covenant. ............................. . Operations and Maintenance Manual. ............. . Figures Page Number 1 1 2 3 4 5 5 5 5 5 1. Technical Information Report (TIR) Worksheet 2. Site Location 3. Drainage Basins, Subbasins, & Site Characteristics 4. SCS Soils Map Off-site Analysis Drainage System Table and Map Drainage Complaint Analysis (previously submitted) Analysis and Design Maintenance Requirements for Privately Maintained Drainage Facilities -not included in this preliminary report Bond Quantities Worksheet -not included in this preliminary report Retention/Detention Facility Summary Sheet and Sketch Declaration of Covenant -not included in this preliminary report TEC • .. Preliminary Technical Information Report Soos Creek Plat SECTION 1 PROJECT OVERVIEW This Technical Information Report is submitted to the King County DOES in accordance with the King County Surface Water Design Manual (KCSWDM). A Level 1 Technical Design and Information Report for Preliminary Plat Review, dated January 26, 2004, was previously submitted for this site; and portions of that previous report are referenced herein; however, the proposed plat has been significantly changed and this TIR addresses the currently proposed plat layout. The 7.05-acre project site comprises 3 existing lots and is located at 12216 SE 192"d Street in Renton, Washington. The project proposes to subdivide the three lots into approximately 40 residential lots, and provide the required infrastructure, including access roads, water and sanitary sewer service, storm runoff collection, conveyance, detention and treatment, and erosion control during construction. Appendix A contains a Technical Information Report (TIR) worksheet for the project (Figure 1), as well as a Site Location Map (Figure 2), a Drainage Basins, Subbasins, and Site Characteristics figure (Figure 3), and a Soils map (Figure 4). More detailed site information is included in Appendix C with the existing and developed site runoff model data. SECTION 2 CONDITIONS AND REQUIREMENTS SUMMARY The following summary describes how this new project will meet the eight "Core Requirements" and the "Special Requirements" that apply: Core Requirements 1. Discharge at the Natural Location: The site currently slopes, steeply in places, to the east and the Soos Creek wetlands. There are no well-defined drainage paths on the site, and runoff occurs in a dispersed manner. The project proposes to infiltrate all runoff from the developed portions of the property and to bypass and disperse off-site flows, which should adequately mimic existing conditions. 2. Off-Site Analysis: A Level 1 offsite analysis was conducted for this preliminary plat as described in Section 3. 3. Flow Control: Runoff from the site will be controlled to meet the requirements of the KCSWDM in two different infiltration facilities. Runoff from 1241h Avenue SE will be discharged into the ground through an infiltration tank, and runoff from the site will be similarly discharged through an infiltration pond. Appendix C contains the KCRTS input and output. 4. Conveyance System: The conveyance system will be sized to convey the 25-year storm without flooding and the performance during the predicted 100-year storm will be evaluated to ensure that significant flooding will not occur. (not included in this preliminary report) 5. Erosion and Sedimentation Control: Runoff from the grading and trenching construction areas will be contained by a temporary construction entrance, silt fencing and sediment traps/ponds in accordance with the KCSWDM during construction. The ESC facilities will only be removed once all exposed site surfaces have been stabilized. Other temporary erosion and sedimentation control measures will be installed as needed. (not included in this preliminary report) I TEC ,• Preliminary Technical Information Report Soos Creek Plat 6. Maintenance and Operations: The treatment ponds, infiltration tank, and infiltration pond should be maintained as described in Appendix D, which includes the KCSWM Maintenance Requirements for Privately Maintained Drainage Facilities. (not included in this preliminary report) 7. Financial Guarantees and Liability: The bond quantities worksheet is included in Appendix E. (not included in this preliminary report) 8. Water Quality: Treatment of runoff will be provided in two wet treatment ponds sized according to the KCSWDM for Basic Water Quality Treatment. Appendix C contains the calculations used to size the treatment ponds. Special Requirements 1. Other Adopted Area-Specific Requirements: The site contains both Level 1 and Level 2 Flow Control areas per the KCSWDM, however the areas designated Level 2 are those located within the steep slope designations. Since the project proposes to bypass offsite flow and pipe onsite runoff to the base of the hill and the Level 1 area, Level 1 Flow Control is proposed. The infiltration facilities are both located at the base of the hill and will discharge (via subsurface flow) to a Level 1 Flow Control area. Appendix A contains King County mapping to support this. 2. F/oodplain/Floodway Delineation: Not Applicable. 3. Flood Protection Facilities: Not Applicable. 4. Source Controls: Not Applicable. 5. Oil Control: Not Applicable. SECTION 3· OFF-SITE ANALYSIS A formal off-site analysis was not conducted for this project because the project proposes to entirely infiltrate stormwater runoff on-site. However, the emergency overflow path downstream was documented and the County's Drainage Complaints File was again solicited to make sure no additional pertinent drainage complaints have been lodged since the original Drainage Complaint Analysis, dated March 20, 2004, which was produced for the project by Jacques Consulting. Task 1. Study Area Definition and Maps The figures in Appendix B show the extent of the study area and the local topography. The Site Plan drawing shows more detailed topographic information on the project site. Task 2. Resource Review Agency mapping was reviewed and TEC contacted King County regarding documented drainage complaints in the vicinity. The SCS soils map identifies site soils in the proposed development area as Alderwood Gravelly Sandy Loam, O -6% slopes and 15 -30% slopes. Task 3. Field Inspection In accordance with the KCSWDM, the existing site and off-site drainage systems were inspected on June 15, 2004. Task 4. Drainage System Descriptions and Problem Descriptions There is only one report of a drainage problem in the immediate vicinity of the project. This complaint involved a plugged driveway culvert across 124th Avenue SE at SE 192"'\ and the 2 TEC ., .. Preliminary Technical Information Report Soos Creek Plat problem has been corrected according to the previously submitted Drainage Complaint Analysis by Jacques Consulting, dated March 20, 2004 (see Appendix B-1). The fact that the project proposes to retain all site runoff means that the project won't exacerbate any existing problems downstream. The County's drainage complaints file was solicited again more recently, and the results of this search are included in Appendix B. No additional pertinent drainage complaints have been logged in the interim. If the drainage system were to fail, and the infiltration facilities were to flood, the emergency overflow path for runoff would be into the adjacent Soos Creek wetlands. These wetlands feed Soos Creek, which flows south on the King County owned property to the east of the project property. Task 5. Mitigation of Existing or Potential Problems To mitigate any water quantity impacts from the project, infiltration of all site runoff is proposed meeting Level 1 flow control requirements in accordance with the King County Surface Water Design Manual (KCSWDM). Water quality impacts will be addressed in treatment ponds. Prior to infiltration, site runoff will be treated in two wet treatment ponds sized for Basic Water Quality Treatment. One pond will treat runoff from the site, and the other will treat runoff from 124'" Avenue SE. SECTION 4 FLOW CONTROL AND WATER QUALITY FACILITY ANALYSIS AND DESIGN The following subsections describe the measurements and criteria used to size the infiltration and treatment facilities. Existing Site Hydrology (Part A) The drainage on the existing site was analyzed for this project with KCRTS. Figures provided in the KCSWDM and KCRTS manual were used to determine project location and scale factor parameters. The figures in Appendix C show the delineation of the areas generating runoff on the site. The site soils are classified Alderwood Gravelly Sandy Loam, either O -6% or 15 - 30% slopes. Appendix C also contains the data and output from the hydrologic analysis. The following table lists the existing site conditions identified for this project and used in the KCRTS modeling included. Description (Site) Area (ac) (1241h Ave SE) Forest 5.76 0.09 Impervious 0.14 0.16 Grass 0.57 0.09 Total Area 6.47 0.34 Developed Site Hydrology (Part B) The proposed drainage systems will route "site" runoff to a Level 1 infiltration pond, and 1241 " Avenue SE runoff to a Level 1 infiltration tank, both of which have been sized to completely infiltrate runoff into the ground. The developed site conditions identified for this project and used in the KCRTS modeling included: 3 TEC ,. Preliminary Technical Information Report Soos Creek Plat Area (ac) Description ISitel (1241 " Ave SE) Forest 0.00 0.00 Impervious 4.38 0.33 Grass 2.09 . 0.01 Total Area 6.47 0.34 Performance Standards (Part C) The site contains both Level 1 and Level 2 Flow Control areas per the KCSWDM, however the areas designated Level 2 are those located within the steep slope designations. Since the project proposes to bypass offsite flow and pipe onsite runoff to the base of the hill and the Level 1 area, Level 1 Flow Control is proposed. The infiltration facilities are both located at the base of the hill and will discharge (via subsurface flow) to a Level 1 Flow Control area. Conveyance features will need to be sized to convey the 25-year developed runoff and their performance during the 100-year event should be checked to be sure that significant flooding would not occur as a result. Flow Control System (Part D) The infiltration pond and tank were sized using the KCRTS routine. The following table summarizes the sizing requirements for the infiltration pond and tank. Infiltration Facilities Site Pond 124'" Ave. SE Tank Required storage volume 13,977 cf 559 cf Effective storage depth/(Tank diam.) 4 ft (4 ft) Top area @ 1' freeboard/(Tank length) 6,084 sf (35 ft) Bottom area/(Trench width) 2,048 sf ((8 ft) Vertical oermeabilitv 8.40 min/in 8.40 min/in Descriptions of the procedures used and calculations and computer output are included in Appendix C. Water Quality (Part E) Runoff from the entire site and 124th Avenue SE will be treated in two separate wet treatment ponds sized for Basic Water Quality Control, prior to infiltration. The following table summarizes the sizing requirements for the infiltration pond and tank. Treatment Ponds Site Pond 1241 " Ave. SE Pond Required wetpool volume 22,899 cf 1,538 cf Wetpool depth 8 ft 4 ft Too area 5,078 sf 660 sf SECTION 5 CONVEYANCE SYSTEM ANALYSIS AND DESIGN Not included in this preliminary report. 4 TEC Preliminary Technical Information Report Soos Creek Plat SECTION 6 SPECIAL REPORTS AND STUDIES Several studies and reports were conducted and produced for this project and are available under separate cover as listed below. 1. Wetland Evaluation and Delineation Report prepared by H & S Consulting, dated May 13, 2004. 2. Traffic Impact Analysis prepared by William Popp Associates, "Draft" dated May 27, 2004. 3. Geotech Report prepared by GeoTrends, Inc., dated March 20, 2004. SECTION 7 OTHER PERMITS No other permits beyond those required by King County are anticipated to be required for this project. SECTION 8 ESC ANALYSIS AND DESIGN Not included in this preliminary report. SECTION 9 BOND QUANTITIES, FACILITY SUMMARIES, AND DECLARATION OF COVENANT Bond Quantities: Not included in this preliminary report. Facility Summaries: The County's Facilities Summary Sheet is included in Appendix E. Declaration of Covenant: Not included in this preliminary report. SECTION 10 OPERATIONS AND MAINTENANCE MANUAL Not included in this preliminary report. 5 TEC APPENDIX A FIGURES 1. Technical Information Report (TIR) Worksheet 2. Site Location Map 3. Drainage Basins, Subbasins, & Site Characteristics 4. SCS Soils Map King County Department of Development and Environmental Services TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Address ~ {t2Y39 /?a,xnna Ae A{(-; Phone 5£_~, Wit C/fltC 2/Jk -.')-u -8'/V ~ Short Subdivision Grading Commercial Other _________ _ Community Drainage Basin Soo& (Kel River . Stream ___________ _ Critical Stream Reach Depressions/Swales Lake ___________ _ Steep Slopes __ Y1~'<2~%~---- Location Township --2~.:l~A/'--"'--- Range _ __,_, .,_f:_..C:::~~--- ............. Section -~,~1~1 ___ _ DFWHPA COE 404 DOE Dam Safety FEMA Floodplain COE Wetlands Shoreline Management Rockery Structural Vaults Other Floodplain ________ _ Wetlands _________ _ Seeps/Springs High Groundwater Table Groundwater Recharge Other __________ _ Figure 1 TIR Worksheet (J pages) Slopes o-ct If-JD°7,, Erosion Potential Erosive Velcoties Additional Sheets Attached -S-U-~cA ;e;»r/ ~~CO REFERENCE /ch. 4 -Downstream Analysis Addnional Sheets Attached MINIMUM ESC REQUIREMENTS DURING CONSTRUCTION .....---Sedimentation Facilities ..---Stabilized Construction Entrance .....-Perimeter Runoff Control ---Clearing and Graing Restrictions ---cover Practices -Construction Sequence Other LIMITATION/SITE CONSTRAINT MINIMUM ESC REQUIREMENTS AFTER CONSTRUCTION ---Stabilize Exposed Surface ___.. Remove and Restore Temporary ESC Facilnies ,..--Clean and Remove All Silt and Debris ..--Ensure Operation of Permanent Facilities --Rag Limits of SAO and open space preservation areas Other Grass Lined ~ ~ Method of Analysis Channel Vault Depression fClllJ /Al(( t ~ Energy Dissapator Flow Dispersal Compensation/Mitigati on of Eliminated Site Open Channel Wetland Waiver Storage -c ury Pono, Stream Regional Wet Pond Detention Brief Descri~tion of.System Operation (!)Sik., ru.nofl,avucl '12 M'/pmd irealmenf and ,'alllhAvn piad f?)&rerc ~ tMr;lf';i>bet h ~ftlnd irealrrwl Facility Related Site Limitations t1,nd tvi,{/la,.Ji,t;n -Jc,,n ' Reference Facilny Limnation Cast in Place Vault ~ Rockery > 4' High ('structural on steep SlopV Other Drainage Easement Access Easement Native Growth Protection Easement Tract Other I or a civil engineer under my supervision my supervision have visited the site. Actual site conditions as observed were incorporated into this worksheet and the attachments. To the best of my knowledge the information provided here is accurate. MapQuest: Maps: print _--:,~A 1/t)ftL Japse,,, -~~~,*- ~ Send To Printer Back to Map I 12216 Se 192nd St ' Renton WA ' 98058-7526 us I Notes: I All rights reserved. Use Subject to Llcense(Copyrlghl I Map Legend Thls map ts Informational only. No representation Is made or warranty given as ti MapQuest and Its suppUers assume no responsibility for any toss or< Privacy Policy & Legal Notices © 2004 MapQuest.com, Page 1 of 1 Figure 2 Site Location Map No Scale htto:l/www.rnaoauest.com/rnaos/orint.ado?rnaodata=o5kavoo6vZLvznAhGFxE2MBWwU... 9/10/2004 .. Map Output @)King County ./ / ~-~' 4i-· Ill Sel<!dad Pa0l$ I _. County Boond•,y $tni,att, -- Home News Legend EE] l-" and l..a,ge ru..,.,. iv' s1m...,,. Ill Klr,g Oounty -P"'l>'1-o Pameill 1v' 't<>?Q C.,,,l<)<jf$ {5ft) Page I of I Comments Sea,ch e infonnation included on this map has been compiled by King County staff from a variety of sources and subject lo change without notice. King County makes no representations or warranties, express or implied, as to accuracy, completeness, tim_eliness, or rights to the use of such infonnation. King County shall ot be liable for any general, special, indirect, incidental, or consequential damages including, but not limited o, lost revenues or lost profits resuhing from the use or misuse of the infonnation contained on this map. sale of this ma or infonnalion on this ma is rohibited exce t b written ennission of Kin Coun . King County I GIS Center I News I Services I Comments I Search By visiting this and other King County web pages, you expressly agree to be bound by terms and conditions of the site. The details. Figure 3a Drainage Basins, Subbasins, & Site Characteristics Scale as shown http://www5.metrokc.gov/servlet/com.esri.esrimao.Esrimao?ServiceName=overview&Clie... 9/10/2004 Map Output @King County n 5) t J-' / ' ' , ' _.// i • -Ct)unty 8(n.itsdaty' ' • S~tQ¥lts. pl ~.17t}' ;./ ~W,, / .. ' =• LJ j>~r<:<,- // Ft$h ~md Ditth 1lAO S!marn ~ C:!' .. "tW. 1 (:~2~~ // ~~~;~~ ,,./ """"' ~~II';:'~ Efil /,./ &i4WGN Legood U.~.$ arid l.1.1gi.; ffh:'<t'fr.t Stl'~~~~ f10<J<lway 100 Ya~u·Ao~~-:iti V'il.RO Ch:.•mtifll MymtKJ:!"1 t-m~,1:m.1 Ama1. ~ MO:Om'ATE Ii,~ . "'"""" E SAO \i\\itland ~ SAO Lln<h!id~ ~ SAOSsi.m.: SAO E,o,iirm iand:sk:l,e Ha.mm Ora~age Am~ {~} Page 1 of 2 e information included on this map has been compiled by King County staff from a variety of sources and is subject to change wnhout notice. King County makes no represente ·mplied, as to accuracy, completeness, timeliness, or rights to the use ot be liable for any general, special, indirect, incidental, or conseque o, lost revenues or lost proftts resulting from the use or misuse of the sale of this ma or information on this ma is rohibited exce I b• Figure 3b Drainage Basins, Subbasins, & Site Characteristics Scale as shown http:/!www5.metrokc.gov/servlet/com.csri.esrimap.Esrimap?ServiceName=overview&ClientV ... 9/15/2004 y ' JV(_p_- i '-----.-_---__ -_--•_---• -- I i I I ------_____ I - -~---+-l'JL I f=r ~~~-o!f-_= _____ =~d.jl r-- i ---, L-- 1 Figure 3c Drainage Basins, Subbasins, & Site Characteristics Scale as shown ·+ ------------------------------ 3~ co N 0 Cf) ~z ow <!. en I I I I ~---------------~----- ---·-·--------····--·-----·-----~ ,ii !:! j ~ ~ t -------~--nu . ---, Figure 3d l~l( I Ill C iil po s· en II> -·IC en ct ID "T1 o CD-· 2!. (") II) !.C ID ::r (I) C II) II) -· ., "' -, ::i CD II) (/) Cl> (") • (..) ::r -en CD 0 (D C: :E :J. C' ::l !!! C' -· II) (") (/) (/) - ::l (/) A03P0287 HYDRO & GEO TopoSC4 ~~00 NF'&h arw:i OIICl'I 011:J1 Bltld EagieNot!!t:!I NTownshp Ur.a,s Wildllte Networl< In-~ " "QSLINE.6 ~S£Cl.1NeS 'NTWPUNES NS"ee11o ;,;IT$8m ~l' ,·,, u 6,C:SAOW~ ,:a SAO L.lloc:slld11 mJ s.\O C.O. Mme tsJ SA.O SNmc CJ SAO EroltiQn w--liiililWlRO-~ ' : Patcell I .... =,. .... _ ... WOIW20R TRE.ES1 WDFW2 OR TREE$3 """'"' FEMA Cros1 Sectlont FEMAFl~ Fl;MA 100.yr. Floodp111n c ... NCfl)' Bouncill1h. "" 1000 ,.-~ 1333 te.;i ® Kl"9 County 1500 Fee,1 TYai~l.---ar,lriarnllJl--~"Y ~ Cat.ny oiafll!'fflt•....-..(yd--..--r"1la tt.,qo,c\lo ~"""""" l'OIQ. '°"'Comly ....... ,.,. ~ ... -... o .. ,.._,.~."'',,. 1UV..:Y,~...._,o,vm,1,;,ll'll""'ol _,._1,;,,,.1<11,gc.....i,-..... -tot ... 191S"t' ~~.ltdcm.1.-...,<a"~ ......... ........ ~tlUll'IOll"""""ti..lNI_Of_ ~,_;.._._ ... ~ .... --.,""~ c,;,nlaillN Ill ....... k,/ ..... ~.,_.,,.~ =_,,·~--.,..-~r,/1(1<,gl l PROJECT .S.1TE. So1L"' ~6'(/}1.i) A1., ALO€iau001J '(Ji;tv&LLY ~ Li>Mf ~:.: _______ .... G= 0-1, 'Z 5£4.?d D = 1 r-?o % .fl.£>"'£r Figure 4 SGS Soils Map 1" = 2,000' APPENDIX B OFF-SITE ANALYSIS DRAINAGE SYSTEM TABLE AND MAP 0FF·SITE ANALYSIS DRAINAGE SYSTEM TABLE SURFACE WATER DESIGN MANUAL, CORE REQUIREMENT #2 Basin: Soos Creek Subbasin Name: Subbasin Number: A-B B-C C-D D-E 984\inB04 r,1J1,r,,1~111;:111111a1i11 .,11111tlill1M@)1Eullii Sheet flow and sub surface flow Wetland/ stream/ channel flow, approx. 150' wide 48" culvert Stream Soos Creek grassy wetland area Soos Creek grassy wetland area Crossing 192nd Soos Creek 2% - 3% 1% - 2% O' -350' 350' -550' 11 111m111~1111111111i,1 1 1111it1I!li!ilill!itl t 1111,•1i,iillfJ11li/I1illtli'llt!iil None noted Wet marshy area, relatively inaccessible None noted Wet marshy area, relatively inaccessible 550' -650' I None noted This culvert was not visible at the time of the inspection, but according to the previous downstream analysis, has conveyed 100- year flows without 0.5% -1650' - 1% 2,650' + None noted floodin.., .. Creek flows in a wide wetland area. Map Output ®King County Off-site Analysis Drainage System Map (Downstream Drainage Path) Scale as shown News Page 1 of 1 Se1vkes Comments http://www5.metrokc.g,,,·/servlet/com.esri.esrimap.Esrimap?ServiceName=overview&Clie ... 9/14/2004 SEP.14.2004 2:04PM e<C NLRD Kill bnty water 1111 Land Re•cea lMIII -11'81118118 88l'Yal • Phoriet Fox14-25_ • 15S 1 --t Saaroh Prlr,!Bd , 9/W2004 1:3T:24 Pl.I C.liii TYIJII JJ111 Ill Prll*I• -... or PrlllNI c .. 1111 1'1'111 .. ..... ca 1976,0110 C DRNG 13038 SE 188Tt-l PL @BLVDLN 686G2 1977-0072 C FLDG 12202 SE 192NDST 6S6F2 1977-0074 C FLOG 13210 SE 192NOST FILUDRAIN WAY 686G2 1978.0080 C PONDING 19248 121STPLSE eAST OF BENSON HWY 686F2 1978-0081 C ORNG 19248 121STPLSE eaeF2 1981-0225 C FLDG 13210 SE 192NOST DRAIN WAY FILLED 686G2 1982-0539 C FLOG 12600 SE 192NOST EAST KENT AREA e86F2 1994-0313 R FLOG 13260 SE192NOST TO ROADS DIV.4 686F2 1984-0314 C FLOG 13250 SE 192NDST SE 192ND ST/1S4TH AVE SE 686F2 1985-0~34 X DRNG 13260 SE 192N0ST LTR TO COMPLAINT 688G2 1966-0617 C DRNG 13432 SE 167TH ST FLOG ON SIDEWALK 686G2 1988.()816 C FLOG 13440 SE 192N0ST REF:88°0832 NESPER 87-0770 686G2 1986,0816 ER FLOG 13340 SE 192NDST (R5F:86-0832 NESPER) PVT PROB. 68602 19S6·1278 CL CLAIM #10373 68eG2 1987-0770. C FLOG 1~ SE 192ND ST l"Al~OOD SEE 86-0816 68eG2 1987-1049 C TO RD COO RD 04/27187. 686F2 1988-0118 X DRNG 13250 SE 192ND ST SEE 88-1278 NESPeR/CL • FORSEST TAAi 686G2 1968-0238 C FLOG 18431 120THAVE SE NEW DRIVEWAY WILL IT FLOOD 686F2 1988-0238 ER PIPE 18431 120THAVE SE NEED EXTENSION OF 42" CULVERT e86F2 1988-0305 C BLOCKAGE 12716 SE 188THPL EASEMENT-FAIRWOODIWALL CCNSTRUC 68602 1989-0003 C DRNG 18612 120THAVE SE INCREASED RUNOFFICHANNEl 686F2 1089-0192 C DRNG 18612 120THAVE SE X PIPE NOT WORKING 886F2 1989.()550 C EROSION 19118 130THAVE SE OLD EASEMENT CHANNEL MAINTENANCE 686G2 1989-0665 C PRNG 13308 SE 184TH PL WATER IN BASEMENT/YARD DRAIN CLOG 686G2 1990-0056 C FLOG 12700 SE 187TH PL UTILITY EASEMT CLOGGED 90-0259 68602 1990-0259 C FLOG 12700 SE 187TH PL F'IIT DITCH OVERFLOW 68602 1990-1106 C ORNG 13517 SE 18gTH PL CULVERT 81..EW TRASH RACKI CEDAR ES 68602 1990·1106 NDA DRNG 13517 SE 169TH PL CULVERT BLEW TAASH P.ACK/ CEDAR ES 886G2 1990·1165 C DRNG 13421 SE 189TH PLACE 13517 SE 189TH PL 686G2 1990-1155 NOA DRNG 13421 SE 189THPLACE REF 90-1105 686G2 1990-1156 C DRNG 13429 SE 189THPlACE 13617 SE 189TH PL 68eG2 1990-1156 NOA ORNG 13429 SE 189TH PLACE REF 90-1106 88002 1990-1157 C DRNG 134:35 SE 189TH PLACE 13517 SE 189TH PL 88002 1990-1157 NDA DRNG 13435 SE 189TH PLACE REF 90,1108 886G2 1990-1158 C DRNG 18917 SE 189TH PLACE 13517 SE 189TH PL 688G2 1990-1158 NOA DRNG 18917 SE 189TH PLACE REF 90-1106 68eG2 1990-1159 C ORNG 13523 SE 189TH PLACE 13517SE 189TH PL 686G2 Page i of 3 ot.t-'. 1..:+ • c:t1t14 c'.; tl~~M ><;L. WL.t<lJ N0.102 P.2,3 , ~ TY119 rn, o1 Pnt1111 Mdl'IIII of Pl'IIIM CIIIW•b JlroaPagl tmmw £11111 1990-1159 NDA DRNG 13523 SE 189TH PLACE: REF 90-1106 586G2 1900-1160 C DRNG 13529 SE 189TH PLACE 13517 SE 189TH PL 686G2 1990-1160 NDA DRNG 13529 SE 189TH PLACE REF 01).1106 686G2 1990-1630 C FLOG 19114 130TH AVE SE STREAM OVERFLOW 88SG2 1991-1090 C DRAINAGE 18532 131STAVf:. SE WATER PONDS IN YARD 686G2 1991-1090 NOA DRAINAGE 18532 131ST AVE SE YARD PONDS 688G2 1991-1090 SR DRAINAGE 18532 131ST AVE SE TOCIP 686G2 1993-0~1 WQC SEDIMENT 13120 SE 192NDST 686G2 1994-0676 woe GREENH20 SE 192ND & 134TH A SE DUCKWEED 886G2 189~0170 woe OIL/CARS 19312 133RDAV1: SE RESIDENTIAL CAR MAJNTl:NANCE eS8G2 1995"0374 C FILLING SE 192ND & 134TH SE WETLAND -REFD TO ODES 68GG2 1996-0391 FCR PONO? 19118 130TH PL SE HOLD-GPR WILL CALL HER 4 MORE DETAI 686G2 1996-0391 NOA POND? 19118 130TH Pl SE HOLD-GPR WILL CALL HER 4 MORE PETAi 686G2 1996,.0391 R POND? 19118 130TH PL SE HOLIJ.GPR WILL CALL HER 4 MORE PETAi 88602 • 1996-0480 C CRKFLDS 13607 SE 192ND ? GROUNDWATER IMPACT WATER POND! 686G2 1996-0921 FCR RID POND 13341 SE 195TH ST OUTLET PIPE OBSTRUCTED ASSESSMEN 686G2 1996-1428 C SWALE 18914 129TH PLACE se OFFSITE Fl.OW IMPACTING PVT ORNG SY 586G2 1906-1428 NOA SWALE 18914 129TH PLACE SE OFFS~ FL.OW IMPACTING PVT ORNG SY 68602 1996-1428 R SWALE 18914 129TH PLACE SE OFFSrTE FLOW IMPACTING PVT DRNG SY 8S8G2 1996-1550 C DRNG 19121 124TH AVE SE PLUGGED 0/W CUI.VERT IMPACT TO PVT 686F2 1996-1894 C RUNOFF 13416 SE 187TH WATER OVER SIDEWALK GROUNOWATE 686G2 1997-0940 C DRNG 13007 SE 188TH PL GROUNDWATER/SHEETFLOW PONDING 686G2 1997,1179 C ORAINAGE 19113 121ST PL SE :NSTALLATION OF DRNG IN RN/ OLD/OFF 886F2 1997-1179 NOA DRAINAGE 19113 121ST PL SE INSTALLATION OF DRNG IN RJW OLD/OFF 686F2 1997-1179 R DRAINAGE 19113 121ST PL SE INSTALLATION OF DRNG IN RJW OLD/OFF 686F2 1997-1301 C DRAINAGE 19125 121ST PL SE SUBSTANDARD INSTL OF DRNG SYS PVT 666F2 1997-1319 FCR DUMPING 21709 146TH STE DUMPED BATTERY IN RIO PONO 68602 1998-0926 C DRAINAGE 19133 121ST PL SE APPARENT OBSTRUCTION IN ROAD ORN 686F2 1999·0174 FCR CLGINLET 13415 SE 187TH PL INLET PIPE APPARENTLY bBSTRUCTED 686G2 1999-o449 C SPRINGS 13518 SE 186TH PL NEW SFR GROUND WATER INFIL ONTO P 686G2 1999-0632 C EASEMENT 19114 130THAVE SE INFO PROVIDED ABOUT RIO POND ON PR 686G2 1999--0679 FCR FENCE 18932 133RDPL SE LEANING FENCE NEEDS REPAIR 686G2 200().0398 C DOM 1262~ SE 192NO ST REQUEST TO DIVERT FLOW OISCHARGIN 686F2 2000-0735 FCR MNM 19000 134TH AVE SE CEDAR BOARD FENCE AROUND PERIMET 686G2 2001-0548 WQP WQP 13120 SE 192ND ST 686G2 2002-0094 Fl REM 13055 S5 192N0ST SWMl/83 REMEASURE OF ORIGINAL 17.7 880G2 2002-0094 FIR REM 13055 SE 192N0ST 6WM"83 REMEASURE OF ORIGINAL 17.7 686G2 2002-0204 FCR MMG 19000 134THAVE SE 1) PSE UTILITY BOX DAMAGED. CALLED 686G2 2002-04i4 C ODM 13003 SE 188TH PL SINKHOLE DEVELOPED APPARENTLY 0V 686G2 2002-0424 NOA· DOM 13003 se 188TH PL SINKHOLE DEVELOPED APPARENTLY OV 68602 SEP.14.2004 2:05PM KC WLRD N0.102 P.3/3 --: '"' '' PIIIJIII Allhll of Pnlblll C.•IB lnl'll8 llnlr 2002-0424 R DOM 13003 SE 188TH PL SINKHOLE DEVELOPED APPARENTLY OV 68602 2003-0266 C DOM 157511 130TH AVE Sf: LOCAL PONDING PROBLEM. MAY BE THE 686G2 2003-0545 WQR WQB 18601 128TH PLSE 6B6F2 2003-0762 WOA WOAI 19433 VASHON HWY SW BMPS an, ALL IN PLACE 6861"2 2003-0909 WQC WQOR 18601 126TH PL SE AUTO FLUID RESIDUE ON STREET AS A R e8SF2 Paga3 of3 Map Output {i)King County News Sen,ices Comments Off-site Analysis Drainage System Map (Upstream Tributary Area) Page 1 of 1 Sea,ch e information included on this map has been compiled by King County staff from a variety of sources and ·s subject to change without notice. King County makes no representations or warranties, express or implied, as to accuracy, completeness, timeliness, or rights to the use of such information. King County shall ot be liable for any general, special, indirect, incidental, or consequential damages including, but not limlted o, lost revenues or lost profits resulting from the use or misuse of the information c,:,ntained on this map. sale of this ma or information on this ma is rohibited exce t b written ermission of :<:in Count . King County I GIS Center I News I Services I Comments I .Sear,ki"-" By visiting this and other King County web pages, you expressly agree to be bound by !am1s and conditions of the site. The details. II I I, 33 = 10'/ http://wwwS.metrokc.gov/servlet/com.esri.esrimap.Esrimap?ServiceName=0verview&Clie ... 9/14/2004 Map Output Page 1 of 1 @King County Ci§i§tk@i iMAP -Stormwater tfr\t~~ ·1=~il11 ~j1 \~-~0;,,, ·--, ) 1_ --i'.)f' i j i ',!Ii' 1,,, ..... ·-' -, .. , .... ·-AREA 12,11. '7l) lfl ,,,,,. _·,·--:r-':s , _. .. 1., J· ,.... . f . ' i.·i T i-A-'·Ji., I / . r .. ,. ·-._,_ ;T'·i·-· i: ;" '_:.".f!QS ~ 'S'"OO,fc :_\ V().j __ , __ -i f '-.::)J .,' ! · .. ' · .. i ··~ ---t~,,~ . -( =-'\\!:.fl·: '···-~ \ ~:-, >/, .... ~, ',,y.,:--, __ ...... , (./l '\::t .... i ::+ f-, /··:tn'1 I 'I '' ~ -""-' /', "\ ...,'<'· -u,_,.,,.. h .. ,.u. ; -\. ;.. .... ,.., ... .{. ...... '/ )< f J. ..... ";,,. fkoJECT Srr£ J:~ ~' -t\·.01:~~:~:..-_:-' ·· ! { ·--~_;_:_,__'~_-. __ ?L_ 0;,_-::_~~::·r·;·f(f :J::i~ti,,~(~f tit~lJ~~J , -__ , ',_' ,, !! I"""''-·""';'"':!:.":"" Fr•··''·' ' ,.-"'.i·-··f··,-, t i r-=,p,..._~ MIL£ J),:w,..JfrREAM ; 1q~f;·····:~/•)-; -'~;dit1(,_j_ /UL,•.,:.•-, \ ~ I-' D ~~<::tetl Pa1t.-et.. {:(H..1:flty 6'H..1ru:lafy KJrig COtmty Da'Jt'ia.ge B~:!M'I~ S<raets Legend e infonnation included on this map has been compiled by King County staff from a variety of sources and is subject to change without notice. King County makes no representations or warranties, express or implied, as to accuracy, completeness, timeliness, or rights to the use of such infonnation. King County shall ot be liable for any general, special, indirect, incidental, or consequential damages including, but not limited o, lost revenues or lost proms resulting from the use or misuse of the infonnation contained on this map. n sale of this ma or infonnation on this ma is rohibited exce t b written ennission of Kin Coun . King County I GIS Center I News I Services I Comments I Search By visning this and other King County web pages, you expressly agree to be bound by tenns and conditions of the site. The details. Off-site Analysis Drainage System Map (Drainage Basin Trib. Area) Scale as shown " ' 1.33 = 5,«.St " , I ;; 4,"z.30 http://wwwS.metrokc.gov/servlet/com.esri.esrimap.Esrimap?ServiceName=overview&ClientV... 9/15/2004 APPENDIX B-1 DRAINAGE COMPLAINT ANALYSIS (previously submitted) SOOS CREEK PLAT DRAINAGE COMPLAINT ANALYSIS LEVEL 1 TECHNICAL DESIGN AND INFORMATION REPORT FOR PRELIMINARY PLAT REVIEW For the King County DOES: SUBDIVISION FILE _A03P0286_ Richard A Boston Addendum to Report of January 26, 2004 Boston Design and Development Co LLC 425-226-2145: Neal M Jacques, P .E. Jacques Consuhing 206-242-5322 Soos Creek Plat TIR 1 By Jacques Consulting March 20, 2004 TIR Addendum DRAINAGE COMPLAINTS King County records were examined fur dowmtteam drainage complaints per core requirement #2. Note that at the discharge point this project contnoutes approximately 2% to the drainage basin flow thus requiring ~ mile investigation. But this report investigated southeasterly for one mile along the Soos Creek Basin (see attached map). The area was inspected and the County complaint listings for a one mile radius were examined. The Soos Creek drainage basin in this area is relatively flat wide and heavily vegetated (grass) with no erosion or flooding problems. The complaint list is attached but they all deal with issues which are uphill either west or east of the Soos Creek Basin. Only one was somewhat relevant, Complaint Number 96-1550, which is a class 1 issue (attached). This complaint in 1996, descn"bes the 18" culvert across !24th Ave SE at SE 192 as blocked and thus erosion over the 124111 gravel road. The solution, to unblock it, was done. The dowmtream flow ftom this project does not flow in this location but because the project access road goes over it, it was included. In February 2004 property owners were notified of King County's plan to widen SE 192 fur a left tum lane, thus this culvert will likely be modified. The subject project final engineering will have consideration fur the revised County intersection design. The remainder of the complaints had no relation at all with the project. The five page list and a map showning location of the most significant problems (eight ponding/flooding complaints) is attached fur general reference. These all involved tributary flows ftom west or east down into drainage systems flowing eventually into Soos Creek Basin. None have any relation to this projects drainage in the Creek itself. In conclusion, for the subject project drainage path, there is no indication of any category 1, 2, or 3 issues with drainage within one mile downstream. Note the TIR downstream analysis dated Jan 26, 2004 for additional discussion. Soos Creek Plat TIR 2 By Jacques Consulting March 20, 2004 5o0S cR"e c 1<.. f'L,.,&!., ARE.A- Do,....=~~ "~~· ..S f-j.aW IMG. 1){?A1,..r""'C:,,£ ,:,.~'ii A ·~ a. I ,..... I 1..;1'1. ~ ~l~i =r a, ::iJ.lr ~ ir ~l9THST ~ljj st _____ 6 '".jL-C .~~I "' ,.. ·-. ,.; •t ~ -.. ,. ~ ~'1~ ::: bl ~1 tj,I SE 184 TH ;::: ST ~\ I g,Jl85111 i N~ .~TI!f ST SE 18.[TILll. .., ;:c t• ~· r; ;:: -· ·~ ~ ... T I UH ..JL. ..l.8!JTH j ~T ~ lit -...t'.-g ' ' ; SEl'911liEl&9.11< :;l)_ j: Vl ~stET sr SE,., co::a. 16911< ;! -f,> i5' 89 .-, < p ..,, '%:;: <, ""l~ ll< ::c: .... ~ ~· (';.f., ~ ~~ 3 ,_ ~ s"· .I~ </) :c L st LO 'I\ l"l'I ('I ..__,. r-i ~. l p\.. jE ~19!ln1LN f""'C ~ ---192.ND ST g TloOd •l('.J /~) ~,6-/S"f"D ~ §/33 \ ( :rt'. ,"J,"{,L-<>,~.~. ~ { ~, ,'; -< ~ r.~· l (s"'T [] 96lli__ _.:_:_ ST / "'! ' 'I" SE l 97T'i~ ( !:j ,1 ST \ re: \0 ,.., ,_, 'ANTHE)< \, '"\ L~KE \ \ SE l98JH lf -< ~ "' §~ ' ;:;!..;5 H .... SE ~ ~ V)~ 203RD \;;Ii! ~I r,,/ ST I ;;:,.,I .... , s: 198TH ST\, 4 ' / 1 ,-,.n • .: S<!""'-f! I :z.,,,c,.' ;;-i-tt .: <t' .1.V.L.,J l Sf lsi°irosf SI • SE 187TH ST SE IB8r1t o WY ~ !i SE 18fil:!:l .. [r_ SE 188TH PL j ~•;E 190TH ST 200TH 201S_T\ SI 202ND1 ST "' ..J "' "-I"' nf _ V> i ST I§ ~·"' ~ lff!.lB.2'l94 5 '~NG ~~ SURFACE WATER MANAGEMENT o,v;;~· M Af'A..- DRAINAGB ll'NESTIGATION REPORT /1-. Pao-1: INVEITIGATION'RIDJEST lype ~ ReciMdi,y: 0.: 8/~/1&. Ol<'dby. T}~ FPt+lo. ~-/55"~ /llolJNt,d from; ,._. prllll PltlnlYfar-llllOJ. (Day) jlile) NAME: & ;4 Y Zaao/c: PWJNE J?!S'/-9.397 ___ _ ADDRESS: Jq[zl ~ 12-r /IIIG: SE, Cl)'. .$7:HfPII Stale. __ ztpf8o5B locedonofjWobla.n,ltY ant p,'lcJj ,"s ~ «r· si 112""' ~-/~""'M;;, ,,..,_~ //~~ ~'~gt!.-t:6".ri::A. /IIOtlf . . . ·.·· .;."" .. ... . . . l.•f .z ~ Sf' Z.79/13 '_..,/.f//1 jltf ' 1't'" 5 Lo;No: 13 Block No: ., ::,,.,, :u .. n_L_ ..... No. "9 9«J e:> '2,&2,. 1/4 S T R . Basll ::tr) CGunol Dtit...9.. Cllergll No: RESfJONSE: ~nolllladon f-tH, a,, -1{pholla_ 11111W . ..:.... .. perlfflf~~ ettua,,, '~~., l',tic..311> l!1-r11p,., -$NI!' ~,J> ,/cPMt,S J/,,1, /!#M~ /!)l,.r ,l,,vt ~~.1#9 Cb>Ss Ca.c.u,.«r: TH,.I) Hll1t f IV##U> ,uS4 ,..,r ,~,,,,_,- Dl$l'O$/T/ON: Tia'l,ed to on' by --------- •......... _, ....., ....... t --DRAINAGE INVESffGATION. REPORT. Fll!LP INVli8IIGATION ----111--naa TZ-Cll!llllff ·-u•VvENDI l'BCllllll tr er DOIIMCm J 0 IIIA1ll'I: DIVllllaN _!.... -------II a11r•----w. AIIWDDII nNNa.__. ........ ._.N&.OP-Wi _ _. ...... WWWWM ..-.--=sauawwwDIILTAW ................. D ... l'IMIPIPL l'Nlfflla-•1111 •= ---WWPRat anc I ...... 0~ ••L,....llrUNI .......... , :•uw-11ffll SUll'CII: _, JD817 ---------- SR112NDSf ::: ! i ... __ .. -- MESSA.GB . . TO JOIIY. LIMl!B 81! ER.Ha • PllON ,..,., !ffllM f NliiJfflMI 11M. lmlP !A DIR ODl8lllJ 11A1L 8TOII cm .......... Man9 I -- l'QR 'ft>UR Rl!IS UNC1!. DR..'11111191! 1'N ,a 11'1&1 • 1DTll Me SI! APPIIWIS 10 R WIIW THE UIII' ~ M S11CN1N C111 llll! AC>tlilliWRS MAR l'IN APFliMa 10 IE Pl ua n, PLEA8B lllil'IY IF ROADS WILL OJICIIRECl. .. NOT POHmu IIDA, -=------· --· I· I SIGNED UPLY DATE •• SIGNED -,--_ ------..... .-< Hl9l'l j~ AV-HLLn WW I--' V, V, "' VJ c.. ~1 0 3S ! I-0 ld HlttI Ii= "' N I-.... I-I-... !! ~ V) -.,, 3S ld I~ ~ 3S V, i= :,: "-~ I-l,; C, Oll£tl ! ::0 0 :z I- -f a !uJ .-. ?i 0\ 0 .... "" V) .... "" 0 0 "' .... u, N "' .J /) VJ \!., 0 0008! w 3S AV V) ~ J AV 0 $ g ..., ~ "' -,.. ' it • 0 ~ v .... '2 'l h j ' ~ ~ J.5£1 , .. 3 ld fll.9£1 (!... 0 ~ :J l'. lJ ~ 3S ~ IU5EI ~ J ~ -"' [ Ir.I ~ cJ .J ( • ' 'ti __ '1$,_AY <l ~ VI 1l1f££I "' .,, LL/ V) M -V l l!-'?. ' t. '-\ -.J ~ -Vl .-:=. . ...., ~ .... !,! t;; ..... ~ "' i= "' S /IV Hl.tU "' ..., AV ... ! V> 3S I-Il I;; 3$ I-/IV V) I-:c ! "'-0 I- V, I-<o 3S /IV · -V) rr! /IV HlBH Q) i= .... IUBII ' m \.,j) :c UJ a-1 * V) ..... I-0 3S AV V> -.... 0 w .... Hl9II ..., "' ~lj V) 0026! 11711\ UJ SE -t 0 -V) 3S /IV 0 "' ,, Hl.9H ,s ld i'; ..., ..., 00 f.rHBi'C~ /:~~"s{r- ~ t;f •• 11•"'-j:i!"' ,1 t _.,.. f "'"' ~5 .,.. ""'~t I !.,_ ~ ....., wi:!:' f-~;:,-J2-s1. N C, 0.. _, ld t; .., "' "'al; 0.. ._ -;_ t"" "' M .., u Zlll ~ tti 1d Q) \'.:, .... "' ... , ..... a! LLI lS AV HHH I- t;;j ~-~i= "' .., 1,l V, V) -t • ~ V, "'~ l ' ' jN ,s ,%. ,.1 !ll ' .-1 ~ ,u ••• I j --... Mffi, 10. 2004 5: 3GPM KC 14.Rl) 111111111.Y ........... •••• ·• 1 11111111 Iii 11llalll p-; S1'10/200f 3:6Z47 PM r 711 (WI '""''""" ... ., ....... I II .... .... CIII· 1975-0148 C EROSION 11!221 SE208THST GALEN CARIN t1 1186F4. 1977-c,()03 C DRNG 12207 SE1111NOST O GOLDEN HILLS 681A 1977-w72 C FLOG 11!21l2 SE192NDST li88F2 19'18-G051 C PONDING 19148 121STPt.SE EAST OF BENSON HWY 886F2 197B-0081 C DFING 192411 121STPLSE l86F2 1978-008S C FlOO 20921 1211TH AVE se BACKVARD tl86F4 19111-GOB1 C DANG 18817 1221\1JPI. SE BLOCKeDIEAST HIU. AREA l!IIIIFS 1981'°215 C DRNG 1111i18 1Z!NDP1.SE CIB CAVING 1H 688f8 1981..Q320 C FLOG _, 1l!IITTI AVE. SE PAlffll!l'I LI< AREA 886F4 19B2,<JS39 C FU)G 12&00 SE19G!NDST EAST KENT AREA 688F2 - 1989 (Ma~ X DANG 1251118 SE2112NDPL SYST1:M MAINTENANCE IIIIIIFS 11184-0091 C ()MG 2G6S8 121JTHAVE SE DfTCH FILLING 68IIF4 1984-0313 R Fl.DO 1:!l250 SE1112N>ST TO ROADS DIV.A 68111'2 1flll4,0314 C FU)G 132$0 SE 1!11!ND ST SE 192ND ST.l'l34TH AVE SE G88f2 1984-0324 C DRNG SE 20ml ST/124llt AVE 6UF3 19118-01FO C FlDG 18517 SE 2001lfST STOflM FIEI.AT£0 6IIIIG4 1lll&-0377 E DANG 12002 SE 20lrTHST 1/llltORTDPAOB. Bl.OCICEDDRIVEWAV 886F4 11188 0379 C FLDG 19807 131THPL SE EROSION 881163 1911&.Q63:i! C DANO 132SO se 1112NOST DIWNPIPE 888G3 19880132 ER DRNG 18250 SI: 111RNDS1' PROS CATI> fN PINT RVW 886G3 188&071!2 C DANG 12240 SE 2001lfST MAIHT9IANCE Of LCn' 688F8 111116-1160 C FlDG 18413 SE 2001HST LAND IN Fl.000 PLAIN IILOCKED PIPE 688G4 11188-11Bt C DRNG 13'1m SE 200TMST SEE116-1t46.~,ll49l!,0317 fl88G4 1eae-11a2 m DRNG 1371D SE 200THST (DS PL 'T) PROB COR. G88G4 1987-4)246 C flDG 2Q236 127lliPL SE WA~ FROM NEIGHBORS 87.anB 68BF9 1987-<1300 C Dll'IG 18701 SE 201srsr DOWNSPOUTS NOT CONNECTED TO DAN ll8IIG4 1981-0000 ER VICI.ATE 13701 SE 201STST SEE 116-1182, 1146 B7.o481,0317,0492 6111184 1987-0:,17 C•. FLoe. 13708 SE l!01STST DOWNSPOUTS NOT CONNECTED 87-o.100 B8llG4 1987,0491 C FLOG 13700 SE 202NDCT DOWNSPOUTS e&-11,48, 11B2 87-0S00,317, IIINIG4 1987-(1(91 NIM. (DS-PLT) SWMDU>IDNPAOB 68683 1887-0492 C fUlG 1ffll2 SE 21111C>CT DOWNSPOUTS 811-1148. 111112 87-0300.S17, llflllG4 1917«15 C DITCH 19407 1M'lllAVE SE OFWNAGE DITCH ON PflOPERTY 6ll6f3 1987-GIMI! C DAt,18 1941JO 184llt AVE SE eASeMENT ENCLOSIHG OITCH ll86G3 . 1987-c918 C DRNG 2112311 127THPL SE WAT9!1JNDEAHOUSE 87,0246 GfJ6F4 (j) 1987-0998 C DANG 1a10 SE Zlll2NDPL 1U.EGAL AU.. IN SOOS C8liEIC ll88G3 1987-1049 C TO AD COORD 04/Zllf{I. IIINif'2 111880222 C ORNG l!Oi2tlO 182NDAVE SE WATEfl Fl'IOU NEW DEVELOPEM9{T 118184 l"age, al s l'tV • .lC)C) r .. ~J.CI C ; II ........... .... ,,.. ~ 1 _,. ..... .. 19811 Dl!38 C FUlG 18431 120THAVE SE NEW DAIVEWAYWIU. ff FLOOD 88F2 1911801. ER PIPE 111481 1211THAW SE NEED IOO'!NSIOH OF 41!" CULVERT 888f2 1918 0?'19 C DflNG 13751 SE l!C81DPL WATER FROM CLEANE» UP CREEK 88IIG4 1988ot4& C DRNC3 19815 133ADAVE se UNFENCED RID PONDIINfO C't TO SWM-F li8IIGll 19811CSS9 C DANG 19412 1aallf PL SI: NEAR SOOS OAeEKIFILL~Q.E~ fl8IIG3 18880661 C Dftt,1(3 20002 1MTHAVE SE FU INWETIANDS 6811'3 1988 0808 C DANG 191122 133RDAVE CHNL l!lOCl<AGeJNEW CONSTRUCTION 68IIG8 i98&-0El(MI E DANG 111111!2 133fl>AVE NEWDRANG£SYSEM -11189 D003 C lw«l 1111112 120THAVE se ,INCflEASEO RUNOl'FlaHANfEL li86F2 19IIIMI0111 C DANG 19400 lMTtlA'\IE SE DITCH MAINTENANCE 6111A 19IIIMIIM8 C DFIN8 2l)eeO 182NOAYE SE !RIO FOREST GU!N)800S Fl.000 PlAIN G8IG4 19111M»ll2 C DANG 111812 1l!lmf AYE SE X PIPE NOT WORKING 888f2 1!1891l128 C DANG 1211Qe SE 2.0'THST 8UIUlER OF NEW HOME IMPOHIED Fill. 888F4 1989-0410 C DAl'4G 12213 SE 199THST PONDING., OIWNAGE EASEMENT f1F3© 191111 062a C DANO 14488 143ADPL SE OONSTON N£W HOMEIWET YARD 88IG3 11189 0554 C DIM 12125 Bl! lOffllST EROSION OF YARDS IN Nf:W PLAT tl8fiF4 19810660 C DANG 2IJ50II 123FIDPL SE DOWNSPOUTSEROOINGYMD ~ 11811H 1981M)1164 C ER:l6ION 20508 1231'1DPL SE NEWHCIUE DOWNSPOUTS OPEN 11881'4 1191Ml221 C ORNG 187111 SE 11191l1PL DfWMPIPEF\.l.USTOAM . ~ 19lll>,0430 C FLOG 13715 SE IIOfNDPl CREEi< FLOODED HOUSelSTORM EVENT . 1891Ml494 C DANG 184112 SE :DmlST STOAM -19II0-04M NOA DIWNAGE 13411: se llllcrrt! ST NAlURAL DE8RIST1WIH FW:l<INIM REV 611116* 1990-C8M ER MNttOl.E 11400 SE llD'IST PL FAll.lJRE,,Llf,I CR6ST Pl.AT OW 1 a 2 ll8IIFS 19111M11111 C CIB 137TB SE 1111m1PL IN YNII>, OIIERFLO. IJ0.0484Jl21 . &8883 1 IIIIOGl10 C Fl.llG 12403 SE 2Cllt«> PL WATEl'IFROMNEW~ 8IIIJF4 1991>-1001 C FIJ)G 19412 13&THPL SE BACK YARD ft' DANG PIPE 68IGa 1990-10SI C DANG 1aol5 SE 196THST SIRING HILLONFJDITCH NOTDIWNING 68IIFlt 1990-1130 C W1'AQTI.Y 19500 133AD1'VE SE BANK STABLl1A~ PLAYING NEA 68flG3 1991>,12811 C Df¥,IQ 1111182 1:M1Hcr SE QJ:1'fllNG Ol'LOTIDITC!f ~ ll88Gll 1990-141111 C ERO$IOH 12601 S£ 201STPL UNDACASST .,.,.. 1991>-1m se Sl\lDY 11111C)t SE 2111ST PUCE snJDV OF AREA f!88F4 1980-1591 C' ' FlDG 1lMOS SE 202Nl)Pl. WATER ON AOMWARDILINDA CREST ST tlllllR 1990-1812 X DfN3 . 12901 SE 20tSTST 0 LINDA CAEST DIV n lll8F4 1119'Hl178 C R.IJ6oERO 11!1111 SE 1881H 8T _____...pQQUN8 OFWATI:R --@ 1991-1)178 ER Fl08IERO 128111 SE 111fflf ST PWGGEDPFWATE PIPE Ge8G8 1891-4)171 SA f\.OGleflO 1llll01 SE 19Sl'HST HOMEOWSI LOT 881163 I 1891-ol!99 C FlDG 191136 121STAVE SE O\l9lFLOW OFFPIPl!S &861'3 1991-G21111 SA FU>G 1119$5 121ST AVE SE RS'Efl TO BAUi Cl8IIFll 1891-0C12 C DANG ,asso 1311AD AVE SI: EAOSION OF ACeSS ROM) 8116133 1•1-o418 C FLOG. 12100 SE 1117THST WASHOUl'OF~ 1111111'3 -·I'm. 10. 200<r -S: 37PM KC l,l..Rl) l'I0.166 P.4/14 C L 7i l 'f1II ....... ..... ,, ...... ... .. .... -1891-o445 C l'LDB 111688 1..al'HAVE SE INFO TO AOSIWATEM!ROSION IN YAIVl &8883 1911-4)612 C Fl.08 aJOa4 la.mtAVE. SE CATCH BASIN t.EAKSIOI/ERfl. 8IIIIF4 1991--0518 C PI.DG 13430 SE 2001lf 8T 88884 1991-4518 NM FLOG 13480 SE l!llOTii ST TOCIP 68864- 1811-0&18 PN Rl)G 134311 SE 2001'HST TOCIP 118884 1991-o&79 C: WfRSN/ 20813 U2NDAV£ SE WATER OVEft SIDEWALK ll&f"4 11191-Qi79 E WTRS/W 20ill13 122NDAVESE OtllSWM DIV PLY BIIIIF4 199t-G579 EH W111S/W 20813 1!12NDAVE SE OHISMI DIV PI.Y 111161'4 1981--0680 C FLOG 20803 1MrHAW SE SMAU. DRAIN SYSTEM Cl OGGED 811111'<1 11191.Q1911 St FLOG 12403 SE lliOINOPL 888F4 11191-1005 C DfWNAGE 12213 se 1!111lHST PONOHli IN YAFllllFENQIG) lllllR 19111-1058 C DfWNAGE 18114 se 200THST, WATel IN CRAWLSPACE B88B4 ~ 1SIIM0&8 SIi DFWNAGe 19714 SE IIDIJTHST NOf!ClAP 61111&4 - 19112 OlfiO C EAO$ION 18513 133RDAVE SE HOMEOWNERS' POND O.F. &8IIOO 181911 OIIOD NOA EROSION 12801 SE 198THST ~PONOO.F. li8IIGa 1991!Q2(X) SR EROSION 195f8 1SIFIDAVF!. SE HOMii10WNERS' f'OtC) o.F, &81183 11192 SB S3 ST1JOY CULVERT UPGIWlE ~ 1!18M310 C DANG" , .. 1MTHPL SE WETLAND~INCRAW 118883 198&,0310 NOA DANG 19832 134TH_Pl. SE WETlANOGflADIH&-DfWNAG IN CMW 8IIIIG3 1993-0310 RN DRNG 1111182 13ffllPI. SE WETlANOGfWJING-l)fWNA8E IN CRAW 68S83 '~ l'IN FLOG. 847 1t7TliAVE SE UPS11'IEAM DEVEI..OPMENr 58&F4 19D0412 C DANQ 1118DO 184TH PLACE ' SE WETLAND CMJSIN8 DIVERSION 68IIG3 19A-0412 NOA DANG 19600 13ffll PLM:E SE WEJ1.ANO CAUSING DIIIEASION 8ll8G3 1993,0412 RN. DANG 18800 1MTMPI.ACE SE WEt1AND CAUSING DMiASION ~ 1911Ml577 C DANG . 137.tll SE 2112NDPL PONDING IN YAAD :) 199S-0577 NQl DANQ 18745 SE 2112ND PL NeW Pl.AT WIU. ADDRESS 1983-G577 RN DANG 13146 SE 20al0Pl. PONOING INY~. ~-0 19118a> E EROSION 1lil00 SE 2011Jl"PL 68883 1993-0580 ER EROSION UIIOO se 201STf1.. 68IIG3 11111$4591 C FLOG 20402 132NDAVE SE SI08tOH FROM THE PLAT OF GRAY&TON leeG4 , .. , ~. FI.DG 20402 1SINl>AV£ SE EROSION Fl'ICM THE Pl.AT OF GAEYSroN 8IIIIG4 1911Ml5112 C DANG 12200 SE l!08tMST SURCIWIGE FAOM C/8 68IF4 1ll!l3-0794 WIQA DIM'ING -12181 SE IIIISflD PLACE TOWOA 11118f4 199H794 woe DlMIING 11!G61 SE 2IIR> PLACE TO~ tll&F4 19!M Oll88 C DANG 19830 13111ltPL se ACTIVE GRIIDING VIQIJl,TION Ul3CMl98 -199+0118 C DANG 20448 tS1STPL SE BACKEN MAI.BOX POST 88D84 1994-032t C: INQUIFIV 121i2S se l!OIIII) PI.ACit #Hf PIPES IN YARD WHERE SHE WILL DI 611F4 1894-0431 C PONDING 12111112 SE l!OIINDPL PONDING IN CUTTER 6GlfF4 1SIIM--06"6 WQC Oll.llNC8 181161 1SR>PI. SE 681188 1991 082& WQE OILIINCB 188112 133fll> Pl sr; 6llll8a C L ii 7 -....... ... ., .... _,. ..... 111111 1994,,0783 C FILLING 20411 132NOAVE se Fill P1..1D:D WITHINSEWEA l!ASEMENT lllliG4 19910783 NOA AU.ING l!IM11 132NDAVE SE RU. PLAOED WITHIN SEWER EASEMENT 6llliG4 1118600-. C DANG 20lll5 11141'11AVE SE WORK IN weTI.ANDS CONTACT AIHSI.E 888F4 1 !1116-111111 C DANG 20808 12"THAVE SE Gl'IOUICJ WAT&R a PVT OAAIN &ail'4. 199IMIS87 'I( OflNG 20IIS6 11MTHAVE se wen.AND ON HIS PROl'Elll V CIIIIF4 1al1124 C CLEANOUT 211334 181STPL SE D1WN CLEAN-OUTOONST IMPAal' fll&G4 1!IIMMl020 C M)PQND 1.D)I SE 1111m1sr PU18GED CU.VERT 1W DISCttAAGE PIP llaeG3 19ll&OOll1 0 RIDPOND 20255 124111AVE SE DOWNSn1EA11 NPACT FAOM RID Ol1TI.E IIIIFI 1111118-024!1 C RUNOFF 1115N 'IIINDPL SE SPMIG HILL ELEMENTARY INFO FI06 DI aRI 1911&G188 C l'UlG 12232 SE 2llll1li Sf FI.OODINB PW TO SlOAM ANO SUBSTN :1® 11188-11788 NDA fLDG 12282 6E l!Olmt9T FLOODING DUE 10810AMAHD SUIISTN 111118 0788 R FlDG 12'l92 SE 200'lli 8T A.OODIHG DUE TO STOflM AND SUIISTN · .-1M§:J/i!iP C DflNQ 18121 1NTHAY.E Se PLUGGED OM Cll.VERT IMPACTTOPIIT •£) ., 124THAVE •. 19911-1835 C DANG 200M SE ROAD~PflOIECT°IMPACI" G88F8 1!1111&-111s woe DlM'ING 13309 se 1811THST WRECKED \/EH IN RD FACIUT'f 081444 118883 1 .. 1906 E AIDl'Qffl 12918 SE 232ND Pl. FENCE ENCAOACHMl:NP IHTOTAACI' eailF3 1N7-05111 0 DAAINAC¥ 130l8 se 20ITHPL PU'GGED PFIIVATEYARO DAloflTA PAO 691184 1!1117-083& FCA FAC.OOM 13.1RD AVE SE e SE 19S-196'0I KIDS ACCESS OVERFLOW Plf>E NEED Tl'! G88G8 1!117.Q768 FCR ROPONO 19125 131RDPL SE WIN:>FAUSADJ TO POND PARKS IMJL aa., 1997-1179 C DRAINAGE 19113 12'1STPL SE MJ'AUATIC)N OF DIING IN R/W OLQ,()FF 8lll8F2 11187-1179 NOA OflAl*8E 18118 121Sf PL SE INSTAI.I.AllON OF DANG IN FIIW OI.DIOFF 6811'2 tWf.1179 R DRAINAGe 19118 121STPL SE INSTAUATlON OF DRNG IN WW _OLQ,OFF 8IIIIP2 1997-1301 C DfWNAGE 19125 121ST Pl SE SUBSfANIWID Mn.OF DAN8 SYS PVf 1881'2 1!1117-1505 C Tl&S 12281?. SE 200lltST IMNGEROUS1REs,ON COUNTY l!AOP 811111'8 1897-1$30 FCFI 1W 19IIOO 13SRD AVf. SE DEBRIS a UTTefl EIIDOl<ING 'FRAStl MC ll88GS 1997-1572 C TREE 121132 SE zocmtST REMOVAL OF WINllFAUS REQUIRED 68GF3 1991M1109 WOO OILSPU. SE 1119 Sl7UM AVE SE SPILL OF l'OLWTAHTS ALONG 11D fWI ll8IIAI 111118 • ctZ• FCR FBIOE 20814 127THPL SE OAIIAGED fENC& ADJACl:NTTO FBICl! ll8liF4 199&-0S61 C DfWNAGE 184$3 SE 1118TiiPL INFO REOUAST RE W1:TLAHOiOPEN SPA 8IIIIF8 1998-0ll97 FCR OfWNAGE 183RD SE O SE 1115-1!16TH PLUGGED TRASH RACKS p0N>JNG UPST 88IIG3 19111 D822 FCft RDPI.UGD SE l!ll8TH STl127TH AVE f'UIG8ED ORIFICE & FENCE REl"AIR 68IIF4 11188 09211 C 1 • DRAINAGE 19138 t21STPL SE APPNIENTOBSTRUCTION IN ROAD DAN 8IIIIF2 111118 01i08 C FENCE . 124!15 SE 111mtPL R£OUeST FOR PENCE BOIJ.AFIDS AT NX e&IIF3 1911!M1916 FCR PIIIGGED 1lNliOD 13SADAVE SE PW0GED TflASH RACl<S DEBRIS REMOV eeaGD 200IMl3IIB C DOM 1211111!5 SE tlllNDSt' MQUESTTO DIYERT Fl.DIN OISCIWIGIN 68IIR 20004415 C MNM 12208 SE 111111H Pl-1/EGETAllON GflOWTH IN TtV.OT. TRACT &8IIF4 2(IIIH50t FCA MMG 18115 133ADAVE SE DAMAGE 10 RID PONO FRO tEIGI eoRt-1 111181D 200IMl713 C DllM 12282 SE IQOT11 ST INCAEASE PLOWWS lMPACT1flG D1W'CA lillGF3 "\ 2ll00-D718 NDf,.. ODIi 12232 se 200TH ST INCftEASE FLOWS IMPACllNG DIWNAGE ::;;i ® 200CMl71S A ODU 111282 81: 2lllrnl ST INCflEASE FLOWS NPACTING DIWIW3E •· --· ·l'm.10.2004 5•3BPM l<C a.LR!) l'IV. J.CC> •. •U' ........ r 121 ......... ......... C J2 ..... I ..... -l!001-CIR14 C DOM 20813 tllmf AW SE IJllJTY Vt'ORK DAMAGED STUB OUR DRA _,. 2001-G418 WQC WQB 12232 SE 2CIOTHST CONCS11C Of' SOAP SUDS 8EING DISCHA 888FS 2001-0458 WQC WQ8 12313 SE 191fmBr APPAR£H'I' I.ACK OF POWlrANT CON1'R ll8liFS 211111~ WCIA WQB 12813 SE 198Tlil'rr APPARENT LACK OF POLUIT#ITCOKl'ft eall"3 2130HM71 FOR WW IIID235 1371HAVE se VilGEfATION GROWTH HEAVIEATHAN II 88884 l!D01.o&32 FCC WQO 1/lllSO SE aTKST APPAAENT DUNPki OF f'AMrOR?? lfT 886F4 211111-GaZ VttlA WClD 1lM30 SE 208Ttl8T APf>Af&fr DUMPING Of' PAINT 0A ?7 INT _... 2IIOHOl!B C OTA , .. SE liOOTHtrr INPORMATION REQUEST FIEGAFIDING pO 88GG3 ~ FOR B&FI -131STPLSE BIO-SWALE flETROl'IT llll8Gl,I 2IXll2-0l68 AE1' BSR 211.158 13tffPLSE 111().SWAI.E AETflO.FIT 88G84 20DI-G408 C MMA 121135 SE 199THST REQUdT10 FIEIIOVETIIEES ON COUN1' eaaF3 2QOa.GIIIJS DDM I.AKEY EOF131!ND APPAfl&NT BEAVER N:TM1Y IN SOOS C 8111184 lOOIMla03 C DOM I.AICEY EOF 132ND APPARENTtliAVER ICTMT'f It SOOS C e&8G4 - 2DOM803 NDi\-DDM I.AKEY EOF182ND APPAl&fr BEAVER JtCrMrf .. SOOS C 8IIIIG4 2:GOGMl8D3 A DOM I.NCEY EOF1811ND APPARENT BEAVER ACrMTY IN SOOS C l88G4 2003 0545 WQft WClB 1llll01 1STHPLSE 88IIF2 200M782 WQA WQAI 19'33 VASHON HWV SW BlotPS w ALL IN Pl.ACE IIMIF2 20Cl34I09 WQC WQDfl ,., tll&Ttf PLSE AUTO FLUID AESIOUEON STflEET AS A A 11B8F2 2004-0193 FCR MNM 12815 SE l!GIITii PL ........ tock OIi gale. In\ ,_. ...... ...... Pag.SOl5 APPENDIX C ANALYSIS AND DESIGN I I .. I ~·· ---.. .,, y,, \ ,O o.•."<•<•e" /' ;e.;;;,c,:~·:t',\ 71: .ot2 ;:. Ml "' " .01·· SP2 7,"" ----- +-.: ... _.: _ .. '.: :}\_:,__, __ ,: .-..;.----------~--'--' ,-,._,~"f-'H'-,,--,-,-+-, ~ f,E., 111 ¥f ,5:; i , • n '--f-!--;-;~. ,-;-, --,,-,,---,,---,,, ! ___ k-1. .. /, LtJ ;· ---l-,,,,.J. __ ..L ... :. -+ FOREST: IMPER\10US: LANDSCAPE: TOTAL: EXISTING SITE: SITE SF (AC): 251,117 (5.76) 6,277 (0.14) 24,796 (0.57) 282,190 (6.47) N EB PROPOSED SITE: SITE SF /AC): 5,173x41x0.7 = 148,465 (3.41) 42,828 (0.97) 90,897 (2.09) 282,190 (6.47) ROOF AND D /WS: 0 I 75 I SCALE: l" 150 : 150 rt. {70% OF LOT AREA OR 4,000 SF -WHICHE'v£R IS LESS) KCRTS INPUT DATA SOOS CREEK PLAT -SITE 9/13/04 KCRTS Command CREATE a new Time Series Production of Runoff Time Series Project Location : Sea-Tac Computing Series exist.tsf Regional Scale Factor : 1.00 Data Type : Reduced Creating Hourly Time Series File Till Forest Till Grass Impervious Loading Time Series File:C:\KC_SWIJM\KC_DATA\STTF60R.rnf 5.76 acres Loading Time Series File:C:\KC_SWDM\KC_DATA\STTG60R.rnf 0.57 acres Loading Time Series File:C:\KC_SWIJM\KC_DATA\STEI60R.rnf 0.14 acres Total Area 6.47 acres Peak Discharge: 0.610 CFS at 9:00 on Jan 9 in Year 8 Storing Time Series File:exist.tsf Time Series Computed KCRTS Command . CREATE a new Time Series Production of Runoff Time Series Project Location : Sea-Tac Computing Series dev.tsf Regional Scale Factor : 1.00 Data Type: Reduced Creating Hourly Time Series File Loading Time Series File:C:\KC_SWDM\KC_DATA\STTG60R.rnf Till Grass 1.73 acres Impervious Loading Time Series File:C:\KC_SWDM\KC_DATA\STEI60R.rnf 4.74 acres Total Area 6.47 acres Peak Discharge: 2.61 CFS at 6:00 on Jan 9 in Year 8 Storing Time Series File:dev.tsf Time Series Computed KCRTS Command Enter the Analysis TOOLS Module Analysis Tools Command Compute PEAKS and Flow Frequencies Loading Time Series File:exist.tsf Flow Frequency Analysis Time Series File:exist.tsf Project Location:Sea-Tac Frequencies & Peaks saved to File:exist.pks Analysis Tools Command Compute PEAKS and Flow Frequencies Flow Frequency Analysis Time Series File:dev.tsf Project Location:Sea-Tac Loading Time Series File:dev.tsf Frequencies & Peaks saved to File:dev.pks Analysis Tools Command RETURN to Previous Menu KCRTS Command exit KCRTS Program SU,e,tARY OF PEAK PREDICTED FLOWS SOOS CREEK PLAT SITE 9/13/04 EXISTING SITE -HOURLY TIME STEP Flow Frequency Analysis Time Series File:exist.tsf Project Location:Sea-Tac ---Annual Flow Rate (CFS) 0.431 0.150 0.363 0.046 0.210 0.344 0.313 0.610 Peak Flow Rates--- Rank Time of Peak computed Peaks 2 7 3 8 6 4 5 1 2/09/01 18:00 1/05/02 16:00 2/28/03 3:00 8/26/04 2:00 1/05/05 8:00 1/18/06 16:00 11/24/06 4:00 1/09/08 9:00 DEVELOPED SITE -HOURLY TIME STEP Flow Frequency Analysis Time Series File:dev.tsf Project Location:sea-Tac ---Annual Peak Flow Rates--- Flow Rate Rank Time of Peak (CFS) 1.30 6 1.09 8 1.56 3 1.21 7 1.45 4 1.39 5 1.76 2 2.60 1 Computed Peaks 2/09/01 2:00 1/05/02 16:00 2/27/03 7:00 8/26/04 2:00 10/28/04 16:00 1/18/06 16:00 10/26/06 0:00 1/09/08 6:00 DEVELOPED SITE -15-MINUTE TIME STEP Flow Frequency Analysis Time Series File:dev15.tsf Project Location:sea-Tac ---Annual Flow Rate (CFS) 2.09 1.46 4.40 1.68 2.44 2.47 2.90 6.22 Peak Flow Rates--- Rank Time of Peak 6 8 2 7 5 4 3 1 8/27/01 18:00 1/05/02 15:00 12/08/02 17:15 8/23/04 14:30 11/17 /04 5 : 00 10/27/05 10:45 10/25/06 22:45 1/09/08 6:30 Computed Peaks sumpks.txt -----Flow Frequency Analysis------- --Peaks Rank Return Prob ( CFS) Period 0.610 1 100.00 0.990 <::z:~! ! r~:gs g:I~ cf.fig ~ i:~8 gJ~p 0.046 8 1.10 0.091 0.550 50.00 0.980 -----Flow Frequency Analysis------- --Peaks Rank Return Prob (CFS) Period 2.60 1 100.00 1.76 2 25.00 1.56 3 10.00 1.45 4 5 .00 1.39 5 3.00 1.30 6 2.00 1.21 7 1.30 1.09. 8 1.10 2.32 50.00 0.990 0.960 0.900 0.800 0.667 0.500 0.231 0.091 0.980 -----Flow Frequency Analysis------- --Peaks Rank Return Prob (CFS) Period 6.22 1 100.00 4.40 2 25.00 2.90 3 10.00 2.47 4 5.00 2.44 5 3.00 2.09 6 2.00 1.68 7 1.30 1.46 8 1.10 5.61 50.00 0.990 0.960 0.900 0.800 0.667 0.500 0.231 0.091 0.980 'Soo:, C,,..c_t k. Ltwl · I (Sil-< j Dt+ PIIY\~ (~· o.up) Q.w.., (or;{ I) • ~ v 0, 2./ "' 0, z ~ o(·, H1) h+-:: 3'1i, f 1,,) : "1·r' Page 1 Retention/Detention Facility Soos creek Plat Site 9/13/04 Type of Facility: Side Slope: Pond Bottom Length: Pond Bottom Width: Pond Bottom Area: Top Area at 1 ft. FB: Effective Storage Depth: Stage O Elevation: storage Volume: Vertical Permeability: Infiltration Pond 3.00 H:lV 78.39 ft 26.13 ft 2048. 6084. 0.140 4.00 0.00 sq. ft sq. ft acres ft ft 13977. cu. ft 0.321 ac-ft Permeable surfaces: Bottom Riser Head: 8.40 min/in & Sides 4.00 ft Riser Diameter: 12. 00 inches Top Notch Weir: None outflow Rating Curve: None stage (ft) 0.00 0.06 0.16 0.26 0.36 0.46 0.56 0.66 0.76 0.86 0.96 1. 06 1.16 1.26 1.36 1.46 1.56 1.66 1. 76 1.86 1. 96 2.06 2.16 2.26 2.36 2.46 2.56 2.66 2.76 2.86 2.96 3.06 Elevation ( ft) 0.00 0.06 0.16 0.26 0 .36 0.46 0.56 0.66 0.76 0.86 0.96 1.06 1.16 1.26 1.36 1.46 1.56 1.66 1. 76 1.86 1. 96 2.06 2.16 2.26 2.36 2.46 2.56 2.66 2.76 2.86 2.96 3.06 (cu. Storage ft) (ac-ft) 0. 0.000 124. 336. 554. 779. 1010. 1247. 1492. 1743. 2001. 2266. 2538. 2817. 3103. 3396. 3696. 4004. 4319. 4641. 4972. 5309. 5655. 6008. 6369. 6738. 7115. 7499. 7893. 8294. 8703. 9121. 9547. 0.003 0.008 0.013 0.018 0.023 0. 029 0. 034 0. 040 0. 046 0.052 0.058 0.065 0. 071 0.078 0.085 0.092 0.099 0 .107 0 .114 0.122 0 .130 0.138 0.146 0.155 0.163 0 .172 0.181 0.190 0.200 0.209 0.219 Discharge (cfs) 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0 .000 0.000 0.000 0.000 0.000 0.000 Percolation ( cfs) 0.00 0.34 0. 36 0.37 0.38 0.39 0.40 0.41 0.42 0.43 0.44 0.46 0.47 0.48 0.49 a.so 0.51 0. 53 0.54 0.55 0.56 0.58 0.59 0.60 0.62 0.63 0.64 0.66 0.67 0.68 0.70 0.71 surf Area (sq. ft) 2048. 2086. 2149. 2214. 2279. 2344. 2411. 2478. 2546. 2614. 2683. 2753. 2824. 2895. 2968. 3040. 3114. 3188. 3263. 3339. 3416. 3493. 3571. 3649. 3729. 3809. 3889. 3971. 4053. 4136. 4220. 4304. 3.16 3.16 9982. 0.229 0.000 0.73 4389. 3.26 3.26 10425. 0.239 0.000 0.74 4475. 3.36 3.36 10877. 0.250 0.000 0.75 4562. 3.46 3.46 11337. 0.260 0.000 0. 77 4649. 3.56 3.56 11807. 0 .271 0.000 0.78 4737. 3.66 3.66 12285. 0.282 0.000 0.80 4826. 3.76 3.76 12772. 0.293 0.000 0.81 4915. 3.86 3.86 13268. 0 .305 0.000 0.83 5005. 3.96 3.96 13773. 0 .316 0.000 0.84 5096. 4.00 4.00 13977. 0 .321 0.000 0.85 5133. 4.10 4.10 14495. 0.333 0.308 0.86 5224. 4.20 4.20 15022. 0 .345 0.871 0.88 5317. 4 .30 4.30 15559. 0 .357 1.600 0.89 5410. 4.40 4.40 16104. 0 .370 2.390 0.91 5504. 4.50 4.50 16659. 0 .382 2 .670 0.93 5599. 4.60 4.60 17224. 0 .395 2.930 0.94 5695. 4.70 4.70 17798. 0.409 3.160 0.96 5791. 4.80 4.80 18382. 0.422 3.380 0.97 5888. 4.90 4.90 18976. 0.436 3.590 0. 99 5985. 5.00 5.00 19579. 0.449 3.780 1. 01 6084. 5.10 5.10 20193. 0.464 3.970 1. 02 6183. 5.20 5.20 20816. 0.478 4 .140 1. 04 6282. 5.30 5.30 21449. 0.492 4 .310 1. 06 6383. 5.40 5.40 22093. 0.507 4.470 1. 07 6484. 5.50 5.50 22746. 0.522 4. 630 1. 09 6586. 5.60 5.60 23410. 0.537 4.780 1.11 6689. 5.70 5.70 24084. 0.553 4. 930 1.12 6792. 5.80 5.80 24768. 0.569 5. 070 1.14 6896. 5.90 5.90 25463. 0.585 5.210 1.16 7001. 6.00 6.00 26169. 0.601 5.350 1.18 7107. Hyd Inflow outflow Peak Storage Target Cale stage Elev (Cu-Ft) (Ac-Ft) 1 2.60 ******* 1.47 4.28 4.28 15459. 0.355 2 1. 39 ******* 0.08 4.02 4. 02 14106. 0.324 3 1.32 0.00 0.00 4.00 4.00 13977. 0.321 4 1.56 ******* 0.00 3.66 3.66 12305. 0.282 5 1.30 ******* 0.00 3.60 3.60 11977. 0.275 6 1.45 0.00 0.00 2.98 2.98 9216. 0 .212 7 1. 09 ******* 0.00 1. 74 1. 74 4589. 0.105 8 1.21 ******* 0.00 1.60 1.60 4133. 0.095 • -en LL () -Q) 0) .._ ctl .c: (.) .oo 0 Return Period 2 5 1 2 5 1 10 1 ~~~~~~~~~~~~~~~---'-~~~~~~~~~~~~~~ o rdout.pks in Sea-Tac + exist.pks LO 10° LO 0 10·1 • 10 1 2 5 10 R i • • 00 0 • 20 30 40 50 60 70 80 Cumulative Probability () 0 • • • 90 95 98 99 -I' ,I' . ~;, I • I • EXISTING 124Tif: SIJE Sf {AC): FOREST: 4,000 {0.09) IMPERVIOUS: 7,064 {0.16) LANDSCAPE: 3,801 (0.09) TOTAL: 14,865 (0.34) N E9 " PROPOSED 124Tif: • 7!I ,,,. I ! : SIJE SE {Ac): 14,422 (0.33) SCALE: 1· -150 ft. 433 (0.01) 14,865 (0.34) KCRTS INPUT DATA SOOS CREEK PLAT -124TH ACCESS 9/13/04 KCRTS Conunand CREATE a new Time Series Production of Runoff Time Series Project Location : Sea-Tac Computing Series exist.tsf Regional Scale Factor : 1.00 Data Type : Reduced Creating Hourly Time Series File Till Forest Till Grass Impervious Loading Time Series File:C:\KC_SWDM\KC_DATA\STTF60R.rnf 0.09 acres Loading Time Series File:C:\KC_SWDM\KC_DATA\STTG60R.rnf 0.09 acres Loading Time Series File:C:\KC_SWDM\KC_DATA\STEI60R.rnf O .16 acres Total Area 0.34 acres Peak Discharge: 0.101 CFS at 6:00 on Jan 9 in Year 8 storing Time Series File:exist.tsf Time Series Computed KCRTS Conunand CREATE a new Time Series Production of Runoff Time Series Project Location: Sea-Tac Computing Series dev.tsf Regional Scale Factor : 1.00 Data Type : Reduced Creating Hourly Time Series File Till Grass Impervious Loading Time Series File:C:\KC_SWDM\KC_DATA\STTG60R.rnf 0. 01 acres Loading Time Series File:C:\KC_SWDM\KC_DATA\STEI60R.rnf 0. 33 acres Total Area 0.34 acres Peak Discharge: 0.158 CFS at 6:00 on Jan 9 in Year 8 Storing Time Series File:dev.tsf Time Series Computed KCRTS Conunand Enter the Analysis TOOLS Module Analysis Tools Conunand Compute PEAKS and Flow Frequencies Loading Time Series File:exist.tsf Flow Frequency Analysis Time Series File:exist.tsf Project Location:Sea-Tac Frequencies & Peaks saved to File:exist.pks Analysis Tools Command Compute PEAKS and Flow Frequencies Flow Frequency Analysis Time Series File:dev.tsf Project Location:Sea-Tac Loading Time series File:dev.tsf Frequencies & Peaks saved to File:dev.pks Analysis Tools Command RETURN to Previous Menu KCRTS Command exit KCRTS Program ' SUMMARY OF PEAK PREDICTED FLOWS SOOS CREEK PLAT 124TH ACCESS 9/15/04 EXISTING SITE -HOURLY TIME STEP Flow Frequency Analysis Time Series File:exist.tsf Project Location:sea-Tac ---Annual Peak Flow Rates--- Flow Rate Rank Time of Peak (CFS) 0.050 5 2/09/01 2:00 0.040 8 1/05/02 16:00 0.060 3 2/27/03 7:00 0.042 7 8/26/04 2:00 0.050 6 10/28/04 16:00 0.053 4 1/18/06 16:00 0.060 2 10/26/06 0:00 0.101 1 1/09/08 6:00 computed Peaks DEVELOPED SITE -HOURLY TIME STEP Flow Frequency Analysis Time Series File:dev.tsf Project Location:Sea-Tac ---Annual Fl ow Rate (CFS) 0.081 0.071 0.099 0.083 0.098 0.086 0.120 0.158 Peak Flow Rates--- Rank Time of Peak computed Peaks 7 8 3 6 4 5 2 1 2/09/01 2:00 1/05/02 16:00 12/08/02 18:00 8/26/04 2:00 10/28/04 16:00 1/18/06 16:00 10/26/06 0:00 1/09/08 6:00 DEVELOPED SITE -1S-MINUTE TIME STEP Flow Frequency Analysis Time Series File:dev1S.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--- Flow Rate Rank Time of Peak (CFS) 0.157 6 8/27/01 18:00 0.110 8 9/17/02 17:45 0.300 2 12/08/02 17:15 0.127 7 8/23/04 14:30 0.167 5 10/28/04 16:00 0.177 4 10/27/05 10:45 0.214 3 10/25/06 22 :45 0.395 1 1/09/08 6: 30 Computed Peaks sumpks.txt -----Flow Frequency Analysis------- --Peaks Rank Return Prob (CFS) Period 0.101 1 100.00 0.990 0.0,~ <g:3 60 i 1tee gjg~ Q,Qj8 ~ 3.00 ~J~~7 (o.o:: i:@8 0.042 0.040 8 1.10 0.091 0.087 50.00 0.980 -----Flow Frequency Analysis------- --Peaks Rank Return Prob (CFS) Period 0.158 1 100.00 0.120 2 25.00 0.099 3 10.00 0.098 4 5.00 0.086 5 3.00 0.083 6 2.00 0.081 7 1.30 0.071 8 1.10 0 .145 50. 00 0.990 0.960 0.900 0.800 0.667 0. 500 0.231 0.091 0.980 -----Flow Frequency Analysis------- --Peaks Rank Return Prob (CFS) Period 0.395 1 100.00 0.990 0.300 2 25.00 0.960 0.214 3 10.00 0.900 0.177 4 5.00 0.800 0.167 5 3.00 0.667 0.157 6 2.00 0.500 0.127 7 1.30 0.231 0.110 8 1.10 0.091 0.363 50.00 0.980 S<>bS Creek Lev(/· I (l"l.'/+1., Avt) lh/J /a,,.k · 4 1 {I QM,.,, {or;f j) • \ ~ 0.05" Or.f (z) M = \ (5) 0 2, 21 ' Page 1 Retention/Detention Facility Soos Creek Plat 124th Access 9/13/04 Type of Facility: Infiltration Tanlc Tanlc Diameter: 4.00 ft Trench Width: 8.00 ft Tanlc Length: 35. ft Effective Storage Depth: 3.50 ft stage O Elevation: 0.00 ft storage Volume: 559. cu. ft Vertical Permeability: 8.40 min/in Permeable Surfaces: Bottom Riser Head: 3.50 ft Riser Diameter: 12.00 inches Top Notch Weir: None outflow Rating curve: None Stage Elevation Storage Discharge Percolation (ft) ( ft) (cu. ft) (ac-ft) (cfs) (cfs) 0.00 0.00 43. 0.001 0.000 0.05 0.06 0.06 52. 0.001 0.000 0.05 0.16 0.16 67. 0.002 0.000 0.05 0.26 0.26 84. 0.002 0.000 0.05 0.36. 0.36 100. 0.002 0.000 0.05 0.46 0.46 117. 0. 003 0.000 0.05 0.56 0.56 134. 0 .003 0.000 0.05 0.66 0.66 151. 0. 003 0.000 0.05 0.76 0.76 169. 0.004 0.000 0.05 0.86 0.86 187. 0.004 0.000 0.05 0.96 0.96 205. 0.005 0.000 0.05 1.06 1.06 223. 0.005 0.000 0.05 1.16 1.16 241. 0.006 0.000 0.05 1.26 1.26 260. 0.006 0.000 0.05 1.36 1.36 278. 0.006 0.000 0.05 1.46 1.46 297. 0.007 0.000 0.05 1.56 1.56 315. 0. 007 0.000 0.05 1.66 1.66 333. 0.008 0.000 0.05 1. 76 1. 76 352. 0.008 0.000 0.05 1.86 1.86 370. 0.008 0.000 0.05 1.96 1.96 388. 0.009 0.000 0.05 2.06 2.06 407. 0.009 0.000 0.05 2.16 2.16 425. 0.010 0.000 0.05 2.26 2.26 442. 0.010 0.000 0.05 2.36 2.36 460. 0 .011 0.000 0.05 2.46 2.46 477. 0. 011 0.000 0.05 2.56 2.56 494. 0. 011 0.000 0.05 2.66 2.66 511. 0.012 0.000 0.05 2.76 2.76 528. 0.012 0.000 0.05 2.86 2.86 544. 0.012 0.000 0.05 2.96 2.96 559. 0. 013 0.000 0.05 3.06 3.06 559. 0. 013 0.000 0.05 3.16 3.16 559. 0 .013 0.000 0.05 3.26 3.26 559. 0.013 0.000 0.05 3.36 3.36 559. 0 .013 0.000 0.05 3.46 3.46 559. 0.013 0.000 0.05 3.50 3.50 559. 0 .013 0.000 0.05 3.60 3.60 559. 0 .013 0.308 0.05 3.70 3.70 559. 0.013 0 .871 0.05 3.80 3.80 559. 0.013 1.600 0.05 3.90 3.90 559. 0.013 2.390 0.05 4.00 4.00 559. 0.013 2 .670 0.05 4.10 4.10 559. 0.013 2 .930 0.05 4.20 4.20 559. 0.013 3.160 0.05 4 .30 4.30 559. 0.013 3.380 0.05 4.40 4.40 559. 0.013 3.590 0.05 4.50 4.50 559. 0.013 3.780 0.05 4.60 4.60 559. 0.013 3. 970 0.05 4.70 4.70 559. 0. 013 4 .140 0.05 4.80 4.80 559. 0. 013 4.310 0.05 4.90 4.90 559. 0.013 4 .470 0.05 5.00 5.00 559. 0.013 4. 630 0.05 5.10 5.10 559. 0.013 4.780 0.05 5.20 5.20 559. 0. 013 4. 930 0.05 5.30 5.30 559. 0 .013 5. 070 0.05 5.40 5.40 559. 0.013 5.210 0.05 5.50 5.50 559. 0.013 5.350 0.05 Hyd Inflow outflow Peak storage Target Cale Stage Elev (Cu-Ft) (Ac-Ft) 1 0.16 ******* 0.11 3.54 3.54 559. 0.013 2 0.09 ******* 0. 04 3.51 3.51 559. 0. 013 3 0.12 0.00 0.00 3.50 3.50 559. 0.013 4 0.10 ******* 0.00 2.17 2.17 425. 0.010 5 0.10 ******* 0.00 2.69 2.69 516. 0.012 6 0.08 0.00 0.00 0.51 0.51 126. 0.003 7 0.08 ******* 0.00 1. 98 1. 98 391. 0.009 8 0.07 ******* 0.00 0.23 0.23 79. 0.002 -Cl) LL () ........ Return Period 2 5 1 1 10°'~-------------__L ____ __J __ ------'---_ __J __ _j___, <> rdout.pks in Sea-Tac + EXIST.pks () Q) 8) 10-1--+----------------------------- ctl ..c () .!!2 0 LO • <> 10 1 2 5 10 R 0 ~ t • • 00 <> 20 30 40 50 60 70 80 Cumulative Probability 0 • • 90 95 Treatment Pond Sizing Routine Project: Soos Creek -sne Date: 8/31/2004 Blue represents manual entry fields Red represents calculated fields Step 1: Wetpool volume factor (f) .•• either 3 or 4.5 f= 3 Step 2: Mean amual rainfall (R) ... from Fig. 6A.1.A, pg 6-69 R= 0.47 In Step 3: Runoff (Vr) •.. Vr=(0.9Al+0.25Atg+-0.1 OAtf +-0.01 Ao)xRfl 2 Al= 191,293 sf Atg = 90,897 sf Alf= Osf Ao= 0 sf Vr= 7,633 cf Step 4: Wetpool volume (Vb) ••. Vb=fVr Vb= 22,899 cf Step 5: Wetpool dimensions ... Vb=h(A 1 +A2)/2 Solve by trlal & error A1 = L= 3L= h= S= A2= ·vb= 5,078 sf 41 ft 123 ft 8 ft 2 ft 83651 23,655 cf ·n Vb calculated In Step 5 < Vb from Step 4, then Increase h Cell 1 must contain 25% -35% of total wetpool volume Cell 1 required volume between 5,914 and Cell 1 A1 = h= S= A2= V= (45x38) 1,710 sf 8 ft 2 ft 87 sf 7,190 cf Drainage Cales.xis (T reatmeot Pond Site) 9/1312004 Cell2 A1 = h= S= A2= V= 8,279 cf (73x48) 3,504 sf 8ft 2 ft 740 sf 16,974 cf ·vb= 24,164 cf Treatment Pond Sizing Routine Project: Soos Creek 124th Access Date: 8/31/2004 Blue represents manual entry fields Red represents calculated fields Step 1: Wetpool volume factor (f) ... either 3 or 4.5 f= 3 Step 2: Mean annual rainfall (R) ..• from Fig. 6.4.1.A, pg 6-69 R= 0.47 in Step 3: Runoff (Vr) ..• Vr=(0.9Ai+0.25Atg+0.1 OAtf+0.01 Ao )xR/12 Ai= 14,422 sf Atg= 433 sf Alf= 0 sf Ao= 0 sf Vr= 513 cf Step 4: Wetpool volume {Vb) ... Vb=fVr Vb= 1,538 cf Step 5: Wetpool dimensions ..• Vb=h{A 1 +A2)/2 Solve by trial & error A1 = h= S= A2= *Vb= 660 sf 4 ft 2 ft 204 sf 1,728 cf *if Vb calculated in Step 5 < Vb from Step 4, then increase h Drai"-Calcs.xls (Treatment Pond 124th) 9/13/2004 • APPENDIX E BOND QUANTITIES WORKSHEET (not included in this preliminary report) RETENTION/DETENTION FACILITY SUMMARY SHEET & SKETCH DECLARATION OF COVENANT (not included in this preliminary report) • : ' KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL STORMWATER FACILITY SUMMARY SHEET Development SOOS C,y,,j.. Pt a } Date 9,l1~/o'f Location ( 2Z I(,, S'c 112..,-y(_ J' ~ e f . l(e,i/vn I ENGINEER Name L.;;,-n"' Name Finn Address !Ii?: Phone Developed Site: Acres .7. D f Number oflots ~ '/O Number of detention facilities on site: Number of infiltration facilities on site: ~~ponds ~/~ponds vaults ___ vaults tanks ____L__ tanks Flow control provided in regional facility (give location) __________________ _ No flow control required Exemption number -- Immediate Basin A Son r f',,.., b I( Basin B C:.'oor r'~el Basin C Basin D Number & type of water quality facilities on site: ___ biofiltration swale (regular/wet/ or continuous inflow?) ___ combined detention/WQ pond (WQ portion basic or large?) ___ combined detention/wetvault ___ compost filter ___ filter strip ___ flow dispersion ___ farm management plan ___ landscape management plan ----------------- MaiorBasin ~~ sand filter (basic or large?) ___ sand filter, linear (basic or large?) ___ sand filter vault (basic or large?) stonnwater wetland ____2:_ wetpond@r large?) wetvault ___ oil/water separator (baffle or coalescing plate?) catch basin inserts: Manufacturer --------------------- ___ pre-settling pond ___ pre~settling structure: Manufacturer ___________________ _ ___ flow-splilter catchbasin DESIGN INFORMATION INDIVIDUAL BASIN A (,,-I-(_ B t 2 'I Ii, 11<,e_ C D Water nuatilv desion flow ~O-l,l{Zur) ~ /, t./ c..r. -~ater Qualitv treated volume o'f wetoorn(Vr) 7,t.?J ci S!:J c,/' 1998 Surface Water Design Manual 9/1/98 • ' KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL DESIGN TOTAL INDIVIDUAL BASIN INFORMATION, cont'd Drainage basin(s) A B C D Onsite area ( a,_ \ (A• '/7 6,sY Offsite area k,ba.Se 1 -- Tvne of Storage Facilitv 1v./'. =4 : ... C. fe,, J. Live Storaee Volume If. 977 ,,,L 5Tf cl Predevel ooed Runoff Rate 2-vear ,, .,,,.., ,,, ·11. \ ro,) 10-vear 0 ."II,~ ,1 t) ( - 100-vear /1, I,//) r, '"' Devclooed runoff rate 2-vear I :>n /1,(")f'i' 10-vear i, 17_ " r,ae; 100-vear ?. /,,0 /"\ IC,( Tvne of restrictor -/oo•;. /·L·#. Size of orifice/restriction No. I No. 2 No. 3 No. 4 FLOW CONTROL & WATER QUALITY FACILITY SUMMARY SHEET SKETCH All detention, infiltration and water quality facilities must include a sketch per the following criteria: I. Heading for the drawings should be located at the top of the sketch (top right-hand comer). The heading should contain: • North arrow (point up or to left) • D9# • Plat name or short plat number • Address (nearest) • Date drawn ( or updated) • Thomas Brothers page, grid number 2. Label CBs and MHs with the plan and profile designation. Label the control structure in writing or abbreviate with C. S. Indicate which structures provide spill control. 3. Pipes--indicate: Pipe size Pipe length Flow direction Use s single heavyweight line 4. Tanks--use a double, heavyweight line and indicate size (diameter) 5 Access roads • Outline the limits of the road • Fill the outline with dots if the road is gravel. Label in writing if another surface. 6. Other Standard Symbols: • Bollards: • • • • • • • • • Rip rap 000000 000000 Fences --x---x ---x---x ---x ---x--- • Ditches -D-CD-CD-CD 7. Label trash racks in writing. 8. Label all streets with the actual street sign designation. If you don't know the actual street name, consult the plat map. 9. Include easements and lot lines or tract limits when possible. 10. Arrange all the labeling or writing to read from left to right or from bottom to top with reference to a properly oriented heading. 11. Indicate driveways or features that may impact access, maintenance or replacement. 911 /98 1998 Surface Water Design Manual 2 • ' " 0, / ;,::~: 05 Ffllf'LAND •tr SIH SQ FEEi' :~ ::; -~-;/,_.. .... 1::-·· _,;-;? ::::.{.-::::.? <: ,:, ........ ~--- /}t.,.· ':~ } I : ~ } t 4! ., .: 'J; ~- f: ,:.,:,::'::»·-:::": :--x :",f\C'.:S -:.:·.::i·-~:1·1··· L",'!-.>;:::"ZI.,; t / ,~. f -~·:.V: .. x_,.:,. "' '\ \ \ \ \ SP\ \·# \\ ': A1.3 \\: •\• " l\ "\ ,.\ ': \ ;.!\ : \ SP4 ; \ \ \\ ~'. \ A12 \ \ -\ ' \ <)) Q #" -~; , CURVE TABLE CURVE LENGTH RADIUS C6 146.85 92.50 C7 79.09 87.50 CB 251.78 102.50 C9 6.30 20.00 C10 32.70 32.00 C11 61.81 92.50 C12 58.97 87.50 \ ... 'i\ \ A10 fu\ \ \ ' ' \ I , I , }I 11;\li Jb~k;r;;r.)~:_: ,:· i'<~~. l~\ !dJJ 1// ,, \ ~~(~~LG)~ A.~~~ Lo~()otJo"L q},s/df \ --~;.,,· \1 \ A6\ \ \ : t:::-?) SP\ \· \\~· \ \b '\sF?~ .~_'J)' --J 0 i.:.~ ~ DlriJ f;j rc=;"-1 l.-' I .J .'_,..--tn~~u 0, I ' !_-, -- ·-j (· ,; ' J ' ...,_ ,,-~ I '2 t~iJ I C::::.-:1 I '-:::__:_,/ TO BE COMPLETED BY APPLICANT 13. Historic and cultural preservation a. Are there any places or objects listed on, or proposed for national, state or local preservation registers known to be on or next to the site? If so, generally describe. b. Generally describe any landmarks or evidence of historic, archaeological, scientific or cultural importance known to be on or next to the site. c. Proposed measures to reduce or control impacts, if any: - 14. Transportation 1 a. Identify public streets and highways serving the site, and describe proposed access to the existing street system. Show on site plans, if any . .S€ /'l2,-..l / '2.. '-I p-,,,..~ 3 ~ b. Is site currently served by public transit? If not, what is the approximate distance to the nearest transit stop? 1-~I CCDA ' EVALUATION FOR AGENCY USE ONLY Jan 15 04 I0:53p January 8, 2004 To: KingCountyDDES Road Services Division Re: Soos er.kPJat ofpsrcel#619900-0240by RBoston File number A03P0286 Dear Sirs, The purpose of this letter is to inform the County of our intent to to Cl)IJVerl an existing 30 foot road and utilities easement aero~ parcel #6199()0..0262 into County P,operty for public road pup-. The improvement of this road will be during the subject plat developlllellt. This will be accomplished via a quit claim deed of "the &st 30 Feet Of Lot 2 Of King County Shortplat Number 278113" to be filled when requested during the plat process. Please contact Rick Boston at 206-755-1617 or Oreg Huffinan at 425-44S-0923 if any additional ~rmation is needed. p. l .. ' '- ' V March 31, 2006 Chad Tibbits DOES 900 Oakesdale Ave. SW Renton, WA 98055-1219 Ravenna Development Charles Spaeth/ John Minden 6939 Ravenna Ave. NE, Seattle, WA 98115 206-526-8481 I (fax) 206-526-5939 cshaffercorp@att.net Re: Fleuve des Voiles Preliminary Plat Application Nbr. L04P0002 Response to DOES Information Requested January 5, 2006 Dear Chad, ,-:::i (' is' n -~ ~ [QJ 5 , rw_ '-\1/, ~ ,1..n ~ I 1\/ D \ __ -__,, '-':::J J u L.._s . MAR 3 1 2006 K.C. D.D.E.S. Below you will find summary responses to each the items raised by ODES reviewers in the January 5, 2006 Information Request. In many cases reference is made to reports that address the items on your Request. A list of these documents (here submitted) can be found at the end of this letter. (ODES 1/5/06 Request comments in italics) Drainage: A drainage adjustment is required from Core Requirement 1, to combine the onsite subbasins and changing sheet flow to concentrated flow. (See drainage bullet 6 to our March 17, 2004 screening letter.) _ \ Le GV&::>40 S0b°"",+\e.J u,~_y47(e7~ Done. A drainage adjustment addresses the issue of combining subbasins and cbangint ~ j_ _ lf sheet flow to concentrated flow (see Justification page of Surface Water Adjustment ' -d.,, Request.) Infiltration bas been removed and replaced with detention. (Here submitted: 3 4---28 copies of Preliminary TIR revised March 29, 2006; together with 3 copies of "Surface Water Design Manual Requirements/ Standards Adjustment Request" with "Justification" page as prepared by Taylor Engineering Consultants) Please clarify the conceptual drainage plan, it is unclear if stormwater infiltration is still proposed Note that infiltration does not appear to be feasible. We are concerned about the suitability of a storm water infiltration pond for this project. Based on a detailed review of the project geotechnical reports, the exploration pit soil logs and information from previous nearby projects, we are concerned about the infiltration rate, the dept to ground water during a very wet period of time and the infiltration of storm water into the toe of a slope that may not be as stable as it appears from the available site iriformation. Thus, we recommend that you seriously consider replacing the proposed infiltration pond with a detention Page 1 of6 La~ 5o()t/t; <, L.tJt/?~~. pond. Please contact Larry West or Bruce Whittaker if you have questions regarding this recommendation. Infiltration has been removed and replaced with detention. Traffic/Roads: Please confirm that the horizontal curves on the plat street comply with the criteria in Section (.,/"?.1 OE of the KCRS, or submit and receive approval for a Variance to approve any non-standard design elements. It appears that the horizontal curves near Lots 23, 24, and 25 (for example) would require the use of the 100-foot centerline radius since the central angle of the curves is less than 7 5 degrees. Done. All curves have been redesigned to comply with Section 2.lOE of the KCRS. Please corifirm that I 22nd Court SE and 12Yd Place are proposed to be private access tracts. ~ The proposed turnarounds do not meet the KCRS requirements for radius, and, since they are proposed, the deviation.from the standard radius (40 feet) will need to be approved through the Variance process. Yes, 122°d Courts SE and 123rd Place SE are private access tracts. The drawings have been revised to clarify this. Because they are private access tracts less than 150 feet in length, KCRS turnaround standards do not apply. The Developer, however, is requesting a Road Variance to allow a cul-de-sac radius of less than 40 feet. See "Road Standards Variance Request" and the attached Justification (here submitted) addressing this issue on pages 2 and 3. Please show the required sight-line (stopping sight distance) for an eastbound vehicle on SE 19 I'' Street on the approach to the 123rdf Place SE intersection. It appears that this may require some limited additional dedication across the southern portion of proposed Lot 5. /:The stopping site distance is shown on Sheet P-2. As suggested, an additional area across Lot 5 is being dedicated to facilitate an unobstructed sight line. The proposed 12-foot off-set in centerlines between the proposed north and (existing) south leg of the 1241 h Ave. SEISE J9r Street intersection will require approval through the Road Variance process. Please submit an application for a Variance to Section 2.10 of the KCRSfor t/this item (as well as any other non-standard design elements). Approval of the Variance, or a redesign to fully comply with the Road Standards, must occur prior to the hearing for this project. Done. A Road Variance request has been prepared and applied for (3/31/06) requesting an offset of centerlines (here submitted). Critical Areas: Page2of6 ' Three outfalls are shown within the wetland buffer (Tract A). The outfall locations can be permitted provided they are located as far from the wetland as possible. The outfalls would be considered allowed buffer impacts and would require mitigation. The drainage plan now proposes only one Gabion cage outfall in the Tract A buffer; the outfall is located as far from the wetland as possible and still meets outfall requirements. Mitigation is offered. (See Conceptual Buffer Mitigation Plan by AC Roth Environmental Services dated March 28, 2006; page 6) To minimize buffer impacts for road construction structural retaining walls will be required for new road construction. Grading for road construction is not permitted within sensitive area tracts. Structural retaining walls have been added to the plans to eliminate any need for road grading within sensitive area tracts. Mitigation for this rockery is addressed in the Conceptual Buffer Mitigation Plan (see pages 4, 5, and 6) Utilities are not permitted within wetlands regardless of construction techniques. This activity would require a Reasonable Use Exception (RUE). The RUE would run concurrent with the plat application and would be presented at the plat hearing. An RUE is difficult to obtain for plat applications (A PAUE would also be difficult if applied for by the Utility.) Acknowledged. An alternate plan to connect the plat to sewer in the SE 192nd Street right- of-way appears feasible and is being pursued with Soos Creek Water and Sewer District. Impacts for utilities (off site sewer connection) require restoration as mitigation plus additional mitigation at a 2: I ratio due to temporal loss of wetland area. Underground utilities may need to be upgraded, repaired or replaced at any fature time. Acknowledged. As it is no longer proposed that utilities would run under sensitive areas. This issue is no longer applicable. A portion of the area shown as buffer to be enhanced in the conceptual mitigation report is off site. Mitigation shall be on site. All mitigation is now on site. See Conceptual Buffer Mitigation Plan, pages 4, 5, and 6. A portion of the area shown as buffer addition is located west of an access driveway for the proposed detention pond. This area would not be counted as buffer addition. The area west of pond access driveway is no longer proposed as mitigation. Mitigation suggestion-remove invasive species from Tract A and plant Tract A with native trees and shrubs. Page3 of6 Mitigation measures include removing invasive species and planting with native trees and shrubs. See Conceptual Buffer Mitigation Plan, (page 6: c. "Removal of invasive vegetation and restoration of native non-invasive vegetational structure on approximately 5,375 sf of low-value, disturbed wetland buffer immediately adjacent to the rockery.") Recreation Space: Submit a conceptual recreation plan that indicates the type of improvements (i.e. sport court, play structure, benches, landscaping, etc.) proposed within the recreation tract(s). See KCC 2JA.14.180(E)(2)for equipment requirements. The Recreational plan, as suggested by DOES staff, jointly serves the Fleuve des Voiles plat and the Cogger short plat. The total Jot count for both projects is 47 lots X 390 sf/lot = 18,330 sf. of required recreational space. Total recreational space provided: 19,419 sf. (See two-page Fleuve des Voiles Recreation Plan) Note that two areas are marked "Tract A." One is the Cogger Short Plat recreational tract due north of the private road marked 122nd Place SE. The other Tract A is in the far northeast corner of the Fleuve des Voiles site. This is a wetland mitigation area. (Fleuve des Voiles Tracts I and J abut the northern and eastern boundaries of Cogger Tract A and are dedicated as recreation space). Walkways: Provide an inventory map (i.e. existing conditions -widths, surface type, etc.) of the walking routes to the elementary, middle school/junior high, and high schools and/or the appropriate bus stop location associated with each school. Identify any improvements necessary to provide safe walking conditions. This information was originally submitted to DOES on April 5, 2004. Ten additional copies were submitted by the Developer on September 15, 2004. It was also presented to Chad Tibbits by the Developer on January 5, 2006. Letter(s) of Intent: Provide a letter(s) of intent from King County Parks and other affected property owners indicating the willingness to dedicate the necessary right-of way and construction of l 24'h Ave. SE as well as additional improvements within the park (i.e. the walkway, landscaping and drainage facilities). If these letters cannot be obtained, the plat must be redesigned. A quitclaim deed dedicating a thirty-foot strip of land to King County, (which will become the north leg of 1241h Ave. SE north of SE 192nd St.) was recorded on October 17, 2005 (Recording #20051017000210). A copy of this quitclaim deed was submitted to Chad Tibbits in January of 2006. Dedication of right-of-way by King County Parks for access to the site is not required. Field Survey: Provide a copy of the base topographic map stamped by a Licensed Surveyor in the State of Washington. Ten copies of this document were submitted to ODES on September 15, 2004. Three additional copies are herewith provided. Page 4of6 BPA: Provide a letter of intent from BP A regarding the placement of the drainage facilities, and road improvements proposed within the easement as well as the ability to dedicate the drainage tract and additional right-of-way as necessary. Not applicable. According to Chicago Title Insurance reports and King County Assessor's maps BP A holds no dominant easements over the Fleuve des Voiles site. Regional Utility Corridor: Per KCC 21A. l 2. l 40 regional utility corridor shall be contained in separate tract(s). Please revise plat to place the utility easement(s) in separate tract(s). Please also identify the tract on the face of the plat. This may result in the recorifiguration and/or loss of lots. Not applicable. According to Chicago Title Insurance reports and King County Assessor's maps there are no utility easements over the Fleuve des Voiles site. Non-Building Tract(s): Tracts H. I and J have been identified as non-building tracts. The division does not support the creation of non-building lots or substandard lots. Please revise the plat accordingly. Non-building Tracts H, I, and J have been eliminated from the Fleuve des Voiles plat. This issue will be resolved by a Boundary Line Adjustment to be submitted in the near future. Revised Preliminary Plat: Provide 25 copies of a revised preliminary plat, as necessary, as a result of above referenced requests for additional Information. 25 copies herewith submitted. Documents and Reports here provided by the Developer: 25 Copies: Fleuve des Voiles Civil Data and General Notes (P-1); Plat Plan (P-2); Prepared by Taylor Engineering Consultants, 3/31/06. 3 Copies: Fleuve des Voiles Conceptual Grading and Drainage Plan (C-1); Preliminary Water and Sanitary Sewer Main Extension Plan (C-2); Preliminary Road and Utilities Profiles (C-3, C- 4); 3/31/06 3 Copies: Fleuve des Voiles/ Cogger Short Plat Recreation Plan (R-1, R-2) 3 Copies: Fleuve des Voiles (labeled Soos Creek Plat) base boundary and topographical survey prepared and signed by Bentley R. Shaffer, Licensed Land Surveyor. Dated January 21, 2004. 3 Copies: Fleuve des Voiles/ Cogger Short Plat Preliminary Technical Information Report revised March 29, 2006; prepared by Taylor Engineering Consultants Page S of6 3 Copies: Fleuve des Voiles/ Cogger Short Plat: Surface Water Design Manual Requirements/ Standards Adjustment Request; together with "Justification" page; prepared by Taylor Engineering Consultants, March 28, 2006 3 Copies: Conceptual Buffer Mitigation Plan by AC Roth Environmental Services, dated March 28, 2006. 3 Copies: Fleuve des Voiles Subdivision Density & Dimension Calculations; prepared by Taylor Engineering Consultants; dated 3/29/06 1 Copy: Fleuve des Voiles and Cogger Short Plat: Road Standards Variance Request to the County Road Engineer dated March 31, 2006; including Justification and Cover letter Please let me know what other information you may require. Thank you. Sincerely, Ravenna Development ~x~ Page6 of6 L-o4~ eoe-Z.. -· ---··---------··-- .Fl~-~\(.;~-- ---~--='=:.>~_ ··-- -'Dc-e-\....:........ 0 •• --------·----·-. ---~~~--------·----·------------·-------·-------------- ~ ~>'\ =,~~ •·{)-:: :hli'-Y~: ::=~::~~ _ _ o....~ 1""' c..,~ ___ <;'.r:-:'.:) 0 __...,-~ l o~s. <::::.~~ o --· .. --_ ·-----~-::> .. ~ ·-~cJ.. +c e--, ~~~--· ?t~~--~•, .. t~.J~ ~--__ ...... ______ \...oid:2..... ~"x ___ .. __________ --.. ----· ·---____ ---.. · .... ----·· -·-.Q~ C"\.~•......_,i_ -G-A,.-S~,n_j_~~ --~d.:~c :S.§~_.__ _ ..... --.. --__ .. _ .. .. ·--· --------~----------·· ---.. ---· .. ·----------------------------.. · ·-··-·---· ---,--~l.\c~ ____b~~ __ .Sec '--"~-~1~ ~~ ~ --~~R-· -~~-· to a-_L_~ ~ __ __1_~ ~-t_~ <,-_ _ __ , ____ ____:_,~, )_______re,~-~ 9 __ __S":oc-.J \Jc...:v-__ \.":::._~~~ _\~ ____ _ __ ___ _ ...r..e.s.c:;:, \v e. -4~-~ Ne \J..,:u,-_ t"'E"' 01:5>'~~----___ -·· --·· ------,:......-.-------- ,: . ~+t--.. " ----------·---···•t+-----··--. ------- ··--·--··-------------------.. ·--- --· ··---------·--------- : : i·i -------------++------- -----··,-,..----- --------. ' -- ·---··---- -· ----4----------···--------- ----·---··· ---····-- ''' ,. ! --·------__ _Jl;__ -------··---- ----·-~---- i ------------f+-----------· -------- ---------~----:;! ::: ! ---·· ---- ------------- --------------··· --- ·----------- ---· --------------------- ---------- Ravenna Development LLC / Charles Spaeth 6839 Ravenna Ave. NE, Seattle, WA 98115 206-526-8481 / (fax) 206-526-5939 cshaffercoro(clatt.net June 21, 2006 Chad Tibbits Program Manager II Dept. of Development and Environmental Services 900 Oakesdale Ave. SW Renton, WA 98055 's.C. D.D.E.S. Re: Notice of Request for Additional Information or Studies, May 11, 2006 Fleuve des Voiles Preliminary Plat: LUSD File No. L004P0002 Dear Chad: This letter and its enclosures are in response to your May 11, 2006 request for additional information. DDES requests are in italics. Responses are in bold. First Bullet Point: The conceptual drainage plan shows a conveyance system for the I 24'h Ave. SE road improvement. Please revise the conceptual plan to address the stormwater detention and water quality requirements of the SWDM. Please include a detail of the proposed water quality design. These items were included in the previously submitted TIR revision dated March 29, 2006. Detention of the runoff from 124th Ave. SE is addressed via "over- detention" of other site runoff in the detention pond. See page 4 of the narrative, paragraph "Developed Site Hydrology" and the detention sizing in Appendix C, reference bypass.tsfand dsout.pks notations. Treatment of the 1241h Ave. SE runoff is provided in cartridge filter treatment catch basins -see item 8, page 2, and section "Water Quality" (Part E) on page 5 of the March 29, 2006 TIR. The cartridge filters will be fully detailed during the engineering review phase of plat approval. Second Bullet Point: The routing of the 124th Ave. SE (drainage) out to SE J9zui St. constitutes a change in the natural discharge location. Please add this issue to the adjustment request that is pending. This should be accomplished by contacting Mark Bergam at 206-296-7270. COPY This issue is being added to the Drainage Adjustment request and being submitted directly to Mark Bergara in a revised drainage adjustment ".Justification" dated June 21, 2006. (See newly inserted item #2 of "Justification" attached hereto.) Third Bullet Point: The previous drainage plan showed a proposed cutoff drain along the west and south property lines. Please revise the conceptual plan to address the ojJvite flow along these property lines. No longer applicable. Originally, the cutoff drain (and redundant bypass drainage pipe system) were provided to make sure that no offsite runoff would burden the previously-proposed infdtration system. Infiltration is no longer proposed and so this concern is no longer applicable. We have solicited, but not yet received, flow data for an adjacent short plat (presumably with its own water quality and detainage system) to be developed west of our site near our northern boundary, which will connect to our plat conveyance system. Offsite flows will be taken into account for final pond orifice sizing. Bruce Whittaker and project civil engineer Bill Taylor, have discussed by telephone why a cutoff drain along the west and sooth property lines is no longer deemed necessary. Fourth Bullet Point: Please.note that a drainage aqjustment has been submitted for review and is pending review and approval. Noted. See response to second bullet point, above. Fiflh Bullet Point: Please note that a road variance has been submitted for review and is pending review and approval. Noted Please let me know if you require additional information. Sincerely, Ravenna Development LLC cc. Bruce Whittaker • Justification per KCSWDM Adjustment Request: Adjustment No.L06V0040 June 21, 2006 Following are 4 standard adjustments required for the proposed drainage detention system proposed for the Fleuve des Voiles Plat Application L04P0002 and Cogger Short Plat Application L05S0040. I. Standard adjustment to 2005 Manual Core Requirement # 1, Discharge at the Natural Location. The project proposes to discharge project runoff to the Soos Creek wetland slightly north (upstream) of the natural location. It is impossible to retain the existing sheet flow discharge condition along the entire east property line and still comply with Core Requirement #3, Flow Control. Additionally, this scenario is preferable because strict compliance with Core Requirement # I would result in discharge to the neighboring backyards creating an unacceptable situation for the adjacent property owners. 2. Standard adjustment to 2005 Manual Core Requirement #1, Discharge at the Natural Location. The project proposes to discharge runoff from 124th Avenue SE to the Soos Creek wetland at l 92"d Street, slightly south ( downstream) of the natural location. It is impossible to provide treatment of runoff and retain the existing sheet flow discharge condition along the entire east side of the roadway because the edge of the roadway is at the property line and the neighboring property owner (King County Parks Department) so far will not grant a drainage easement for discharge of this runoff. 3. Standard adjustment to 2005 Manual Core Requirement #3, Flow Control. The project proposes to use Level 1 detention criteria for the entire site. The project site contains both Level 2 and Level 1 detention areas. The upper hillside portions are subject to Level 2 detention requirements and the lower portions to Level I. In lieu of Level 2 detention, the project proposes to tightline all runoff from the upper hillside down to a Level 1 detention pond at the base of the hill in the level 1 detention area. This will meet and exceed the intent of the code by removing all runoff from the erosion sensitive hillside as opposed to a controlled release as strict adherence to the code would require. 4. Standard adjustment to 2005 Manual Core Requirement #3, Flow Control. These projects propose to detain and treat runoff in a single facility located in the Fleuve des Voiles Plat property, subject to approval of a Shared Facility Plan. A shared facility will reduce the number of drainage facilities that King County will need to maintain. The two projects are adjacent and share all access and utilities. Combining stormwater is a logical extension of this concept. Note on all adjustment requests: The Fleuve des Voiles Plat is vested under the 1998 KCSWDM and the Cogger Plat must comply with the 2005 KCSWDM The existing site runoff calculations used/or sizing the detention system comply with the 2005 Manual requirements for Cogger and the 1998 Manual requirements for Fleuve des Voiles. This means that the Cogger Short Plat area was modeled as fully forested for the existing conditions. The pond itself complies with the requirements o/2005 KCSWDM •• Charles Spaeth / Ravenna Development 6839 Ravenna Ave. NE, Seattle, WA 98115 206-526-8481 / (fax) 206-526-5939 cshaffercorp@att.net June 29, 2006 Bruce Whittaker DDES, Land Use Service Division 900 Oakesdale Ave. SW Renton, WA 98055-1219 Re: Fleuve des Voiles/ L04P0002 SE 192°d / 124th Ave. SE Intersection Dear Bruce, K.C. D.D.E.S. Enclosed you will find the following regarding the above referenced intersection: • Fleuve des Voiles revised (6/12/06) Sheet P-2 showing intersection detail • C. Spaeth proposal letter to Dept. of Natural Resources and Parks, 6/13/06 • Robert Foxworthy of Dept. of Natural Resources and Parks 6/27/06 response to C. Spaeth 6/13/06 proposal • Kristen Langley and Craig Comfort (Dept. of Transportation) 6/26/06 technical comments on C. Spaeth proposal (The reason Craig and Kristen were the first to see and comment on the proposal is because Craig contacted me when he received the road variance request submitted 3/31/06. Following that contact I exchanged letters and phone calls with Nick Halverson and Robert Foxworthy of Parks, which culminated in a meeting with them and the submission of my 6/13/06 letter. Since Robert's and Nick's offices are in the same building as Craig and Kristen I suggested they show them Sheet P-2. Craig and Kristen responded with their 6/26/06 technical comments.) At my meeting with Robert Foxworthy and Nick Halverson I proposed that Parks transfer or grant rights to use a 455 sq. ft. "triangle"as shown on Sheet P-2, in return for my transferring or granting rights to use "Tract A" to Parks. They were both supportive of the proposal and indicated others in their department with whom they had consulted were as well. I requested written documentation evidencing Park's willingness to work with the Dept. of 'Ftmtspmtation and nre tu cteate ttze best possible htre.tsection design. Tire propose ofltobe1t's June 27th letter is simply to indicate the Park Department's intention to cooperate. Robert realizes that the legal and technical mechanics of getting everything worked out will require much more refinement. COPY Page I of2 ,. You will also note that Parks is agre.:able to discussing drainage issues. Craig Comfort indicated that-assuming the intersection design shown on Sheet P-2 is acceptable to you-it would appear there is no longer any necessity for a Road Standard Variance (submitted 3/31 /06) for intersection spacing nor for the cul-de-sac radiuses (which are not non-public and shorter than 150 feet in length) Please let me know if I am in error on these points, or if there is any additional information that you may require. If a variance is no longer required, what is the process to terminate it? Please contact me at 206-526-8481 if you have any questions. cc. Chad Tibbits Nick Gillen Larry West De-En Lang Robert Foxworthy Nick Halverson Page2 of2 Sincerely, Ravenna Development ~~cf~~ Charles Spaeth • Parks and Recreation Division Department of Natural Resources and Parks King Street Center Building KSC-NR-0700 201 South Jackson Street Seattle, WA 98104-3855 206-296-8687 June 27, 2006 Mr. Charles Spaeth Ravenna Development LLC 6839 Ravenna Avenue NE Seattle, WA 98115 Subject: Intersection -SE 192nd Street/124'h Ave. SE, Dept. ofNatural Resources and Parks' Soos Creek Property, Fleuve des Voiles Preliminary Plat Dear Mr. Spaeth: The King County Parks and Recreation Division appreciates having the opportunity to meet with you this afternoon to discuss your proposed preliminary plat. We understand that the Parks and Recreation Division possess an important piece of property that the development will require in order to meet the King County road standards As we noted in the meeting, the Parks and Recreation Division is interested in working cooperatively with you toward finding solutions to the real estate and technical issues necessary to ensure that your project meets the County's road and intersection standards. To this end, we look forward to identifying and facilitating an appropriate Parks and Recreation Division/developer land exchange strategy as well as, to identify the most appropriate technical strategies to meet identified drainage and other issues that may affect future Parks and Recreation facilities. Sincerely, Robert Foxworthy, A!C:P-- Regional Trails Coordinator cc: Tom Teigen, Business Plan Implementation Section Manager, Parks and Recreation ""'-·· Di,dsiou 5 Department ofNabJtal BesrnJtces and Parks Q)NRP) Nick Halverson, Property Agent, Parks and Recreation Division, DNRP Craig Comfort, Senior Engineer, King County Road Services Division Kristen Langley, Traffic Impact Review Engineer III, King County Road Services Division ,· June 13, 2006 Charles Spaeth / Ravenna Development LLC 6839 Ravenna Ave. NE, Seattle, WA 98115 206-526-8481 I (fax) 206-526-5939 Nick Halverson and Robert Nunnenkamp KC Dept. of Natural Resources and Parks 201 S. Jackson St. KSC-NR-0700 Seattle, WA 98104-3856 Re: Intersection -SE 192•• St/ 124 .. Ave. SE; Dept. of Natural Resources and Parks' Soos Creek property; Fleuve des Voiles Preliminary Plat Dear Mr. Halverson and Mr. Nunnenkamp, I am the developer of the proposed 39-lot Fleuve des Voiles plat (Fleuve) plus the contiguous 8- lot Cogger short plat, which are currently under review by DDES for preliminary plat approval (L04P0002 and L05S0040). The proposed access to the Fleuve/Cogger project is via the north leg of the SE 192"" /!24th Ave. SE intersection. I am proposing a land trade (or a trade of easements) between the Fleuve plat and the Parks Department that I believe will benefit both Parks and the Dept. of Transportation. To review-the Fleuve project currently has thirty-feet of dedicated access on the west half of what would be the north leg of 124 .. Ave. NE. Under normal circumstances the landowner on the east half of the road would also dedicate thirty feet to complete a sixty-foot right of way. (The south leg of 124 .. Ave. has a sixty-foot right of way.) The Parks Department ownership of the easterly thirty feet, however, makes for an unusual situation Enclosed, you will find my engineer's drawing showing the alignment I propose for the SE 192"" & 124th Ave. SE intersection. You will note that the SE 192"" St. right of way extends far enough north to allow the southerly portion of the north leg of 124th Ave. to align with its south leg. North of the SE 192"" St. right of way and east of the 124th Ave. centerline, however, the land belongs to Parks. Absent access to a small portion of Park property (as delineated in #I, below) the Dept of Transportation will be unable to design an intersection that meets required safety standards. "Tract A" shown on the drawing (21,937 sq. ft. of wetland buffer immediately north of the 90- degree curve) is where the developer is required to enhance 6,558 sq. ft. by removing non-native species and planting native species. The balance of Tract A, approximately 15,379 sq. ft., is available to use for additional enhancement to mitigate other impacts to wetland or buffer in the immediate area. No utilities run either under or over Tract A except for a proposed storm water overflow outlet into a Gabion cage. I hereby formally propose to the Dept. of Natural Resources and Parks that all 21,937 sq. ft. of Tract A be dedicated to Parks in return for Parks agreeing to do the following: 1. Dedicate, grant an easement to; or otherwise cede control to King County Dept. of Transportation of approximately 455 Square feet ( delineated as shaded area on intersection detail as shown on P-2, Fleuve des Voiles preliminary plat, attached). Transfer of this area to Dept. of Transportation's control will enable the north leg of 124th Ave. SE to safely align with its south leg; and it will allow for a thirty-foot right of way of the north leg as 124th Ave. SE is brought west of the center line (and the property line) as it proceeds north at a ninety-five degree angle relative to the east leg of SE 192•d St. 2. Grant a drainage easement allowing runoff from the north leg of 124th Ave. SE to sheet flow to the east as it historically has. Pending a determination of the precise legal method by which this exchange of land and/or the rights thereto, and the granting of a drainage easement, would be accomplished, I request the timely issuance of a memorandum from the Parks Department indicating the Parks Department's interest in pursuing the proposal offered above. Thank-you for your consideration. Sincerely, Ravenna Development LLC Charles Spaeth, Manager Encl. Fleuve des Voiles preliminary plat, Sheet P-6, Revised 6/12/06 cc. Chad Tibbits, DOES Bruce Whittaker, DOES Nick Gillen, ODES Larry West, DOES Kristen Langley, Dept of Transportation Craig Comfort, Dept. of Transportation From: Langley, Kristen [Kristen.Langley@METROKC.GOV] Sent: Monday, June 26, 2006 7:28 AM To: Comfort, Craig; cshaffercorp@att.net Cc: Tazwna, Thomas; Claussen, Kimberly; Dye, Pete; Kara, Fatin Subject: RE: Flueve Des Voiles Plat Variance L06V0035 To respond, the curb returns should be set based upon a measurement of 22-feet from centerline to curbline, on SE 192nd Street The entire curb return should be constructed on both the northeast and northwest corners of the intersection. Since there is going to be an issue of timing of the County's CIP, it may make some sense (if the CIP is going to occur after the construction of the remainder of the plat improvements) for the Applicant to construct only a paved shoulder (in lieu of the curb returns and associated ADA ramps and sidewalks) and deposit the construction costs of those remaining improvements into the CIP account It would appear to be inadvisable to (potentially) have the Applicant construct some improvements --only to have them removed for the installation of the signal poles, conduits, and other appurtenances --and then rebuilt Tom: where are we with the timing of the CIP? Kris From: Comfort, Craig Sent: Monday, June 26, 2006 6:45 AM To: 'cshafferrorp@att.net' Cc;: Langley, Kristen; Tazuma, Thomas; Claussen, Kimberly; Dye, Pete; Kara, Fatin SUbject: Flueve Des Voiles Plat Variance L06V0035 Charles Spaeth: Thank you for the conceptual design showing the additional property to be provided at the northeast quadrant of the intersection of SE 192nd Street and 124th Avenue SE in order to align the road centerline. I understand you are working with KC Parks to effect the land transfer. The proposed area land area to be provided looks acceptable to me in order to build and align the north leg of the intersection. You should also consult with the DDES as ultimately they will be reviewing and approving your improvement plans. DDES might prefer a horizontal curve instead of the 5 degree angle point at the intersection. The proposed land transfer area has acceptable area for at least a 300 feet radius horizontal curve. Please note that the proposed 25 fo9t curb line radii should be a minimum 35 feet. Please consult with ODES as to the how far the curbs should be extended around onto SE 192nd Street and the exact location of the curb terminii from the centerline of that arterial. I assume the proposed 24 foot road width with sidewalk on one side (north leg of 124th Avenue SE) is being approved by DDES under 1.03 of the KCRS. The existing 30 foot Width of the offsite ROW limits the road Width. Craig Comfort ® Web date· 09/13/2005 King County DROP-OFF COVER SHEET FOR LUSD ONLY Department of Development and Environmental Services Land Use Services Division 900 Oakesdale Avenue Southwest Renton, Washington 98055-1219 206-296-6600 TIY 206-296-7217 For alternate formats, call 206-296-6600. Drop-Off Cover Sheet for Land Use Services Division ••••••••••••••••• IMPORTANT••••••••••••••••• PROJECT NUMBER AND NAME IS NECESSARY FOR ALL DROP-OFFS Project No L004P0002 Project Name Fleuve des Voiles Preliminary Plat FROM Ravenna Development, Charles Spaeth, Applicant Company Name I Contad Person Telephone No 206-526-8481 TO Bruce Whittaker DATE RECEIVED BY LUSD ~LE'.cc~~~~ru JUN 2 1 2006 lb!) K.C. D.D.E.S. ADDITIONAL INFORMATION REQUESTED BY KING COUNTY STAFF (please print) Short Plat/ Plats Please specify item(s) dropped-off: 1 copy: Letter of response to DOES 5/11 /06 request for add~ional information Lot Line Adjustment Permit Please specify item(s) dropped-off: Right of Way Permit Please specify item(s) dropped-off: Clearing/ Grading Permit -Additional information requested. Please specify item(s) dropped-off: 2!!!!!:= PLEASE NOTE: All drop-off item(s) will be logged into the computer under the project number, therefore, it is important that the top portion of this form is completed properly before you drop-off anything. Assistance in finding a project number can be provided by speaking to a Zoning/Land Use Technician. Your cooperation is important. Thank you. Check out the DOES Web site at www.metrokc.gov/ddes KC Drop-OffCoverSheet-LUSDOnlyFORM lg-cvs-dropoll.pdf 09/13/2005 Page 1 of 1 June 21, 2006 Ravenna Development LLC I Charles Spaeth 6839 Ravenna Ave. NE, Seattle, WA 98115 206-526-8481 I (fax) 206-526-5939 cshaffercorpialatt.net Chad Tibbits Program Manager II Dept. of Development and Environmental Services 900 Oakesdale Ave. SW Renton, WA 98055 Re: Notice of Request for Additional Information or Studies, May 11, 2006 Fleuve des Voiles Preliminary Plat: LUSD File No. L004P0002 Dear Chad: This letter and its enclosures are in response to your May 11, 2006 request for additional information. DDES requests are in italics. Responses are in bold. First Bullet Point: The conceptual drainage plan shows a conveyance system/or the l 24'h Ave. SE road improvement. Please revise the conceptual plan to address the stormwater detention and water quality requirements of the SWDM Please include a detail of the proposed water quality design. These items were included in the previously submitted TIR revision dated March 29, 2006. Detention of the runoff from 124th Ave. SE is addressed via "over- detention" of other site runoff in the detention pond. See page 4 of the narrative, paragraph "Developed Site Hydrology" and the detention sizing in Appendix C, reference bypass.ts( and dsout.pks notations. Treatment of the 124th Ave. SE runoff is provided in cartridge ftJter treatment catch basins -see item 8, page 2, and section "Water Quality" (Part E) on page 5 of the March 29, 2006 TIR. The cartridge filters will be fully detailed during the engineering review phase of plat approval. Second Bullet Point: The routing of the 124'h Ave. SE (drainage) out to SE 192"4 St. constitutes a change in the natural discharge location. Please add this issue to the adjustment request that is pending. This should be accomplished by contacting Mark Bergam at 206-296-7270. This issue is being added to the Drainage Adjustment request and being submitted directly to Mark Bergam in a revised drainage adjustment "Justification" dated June 21, 2006. (See newly inserted item #2 of "Justification" attached hereto.) Third Bullet Point: The previous drainage plan showed a proposed cutoff drain along the west and south property lines. Please revise the conceptual plan to address the offeite flow along these property lines. No longer applicable. Originally, the cutoff drain (and redundant bypass drainage pipe system) were provided to make sure that no offsite runoff would burden the previously-proposed infiltration system. Infiltration is no longer proposed and so this concern is no longer applicable. We have solicited, but not yet received, flow data for an adjacent short plat (presumably with its own water quality and detainage system) to be developed west of our site near our northern boundary, which will connect to our plat conveyance system. Offsite flows will be taken into account for final pond orifice suing. Bruce Whittaker and project civil engineer Bill Taylor, have discussed by telephone why a cutoff drain along the west and south property lines is no longer deemed necessary. Fourth Bullet Point: Please note that a drainage adjustment has been submitted for review and is pending review and approval. Noted. See response to second bullet point, above. Fifth Bullet Point: Please note that a road variance has been submitted for review and is pending review and approval. Noted Please let me know if you require additional information. Sincerely, Ravenna Development LLC _,1.c::::::--z;;-~~~ ~77( - Charles Spaeth, ~ger cc. Bruce Whittaker ' Justification per KCSWDM Adjustment Request: Adjustment No.L06V0040 June 21, 2006 Following are 4 standard adjustments required for the proposed drainage detention system proposed for the Fleuve des Voiles Plat Application L04P0002 and Cogger Short Plat Application L05S0040. 1. Standard adjustment to 2005 Manual Core Requirement #1, Discharge at the Natural Location. The project proposes to discharge project runoff to the Soos Creek wetland slightly north (upstream) of the natural location. It is impossible to retain the existing sheet flow discharge condition along the entire east property line and still comply with Core Requirement #3, Flow Control. Additionally, this scenario is preferable because strict compliance with Core Requirement #1 would result in discharge to the neighboring backyards creating an unacceptable situation for the adjacent property owners. 2. Standard adjustment to 2005 Manual Core Requirement #I, Discharge at the Natural Location. The project proposes to discharge runoff from 124'h Avenue SE to the Soos Creek wetland at 192nd Street, slightly south (downstream) of the natural location. It is impossible to provide treatment of runoff and retain the existing sheet flow discharge condition along the entire east side of the roadway because the edge of the roadway is at the property line and the neighboring property owner (King County Parks Department) so far will not grant a drainage easement for discharge of this runoff. 3. Standard adjustment to 2005 Manual Core Requirement #3, Flow Control. The project proposes to use Level I detention criteria for the entire site. The project site contains both Level 2 and Level I detention areas. The upper hillside portions are subject to Level 2 detention requirements and the lower portions to Level I. In lieu of Level 2 detention, the project proposes to tightline all runoff from the upper hillside down to a Level I detention pond at the base of the hill in the level I detention area. This will meet and exceed the intent of the code by removing all runoff from the erosion sensitive hillside as opposed to a controlled release as strict adherence to the code would require. 4. Standard adjustment to 2005 Manual Core Requirement #3, Flow Control. These projects propose to detain and treat runoff in a single facility located in the Fleuve des Voiles Plat property, subject to approval of a Shared Facility Plan. A shared facility will reduce the number of drainage facilities that King County will need to maintain. The two projects are adjacent and share all access and utilities. Combining stormwater is a logical extension of this concept. Note on all adjustment requests: The Fleuve des Voiles Plat is vested under the 1998 KCSWDM and the Cogger Plat must comply with the 2005 KCSWDM The existing site runoff calculations used for sizing the detention system comply with the 2005 Manual requirements for Cogger and the 1998 Manual requirements for Fleuve des Voiles. This means that the Cogger Short Plat area was modeled as fully forested for the existing conditions. The pond itself complies with the requirements of 2005 KCSWDM , t ® King County Department of Development and Environmental Services 900 Oakesdale Avenue SW Renton, WA 98055-1219 May 11, 2006 Charles Spaeth 6839 Ravenna Avenue NE Seattle, WA 98115 RE: Notice of Request for Additional Information or Studies Application No. L04P0002 -Fleuve des Voiles Subdivision (formerly Soos Creek) Date Filed: February 4, 2004 Date of Complete Application: October 1, 2004 Dear Mr. Spaeth: The purpose of this letter is to notify you pursuant to King County Code Title 20 that the Land Use Services Division is requesting additional information and/or studies to complete the review of your project. The information is described on the enclosed plat screening transmittal. When submitting the requested information, include a copy of the plat screening transmittal and retain a copy for your records. Provide a cover letter, which lists how each item, was addressed. Any clarification or explanation of the submittal can also be included in the cover letter. Please submit the information to: King County Dept. of Development and Environmental Services Land Use Services Division ATIN.: Chad Tibbits, Project Manager II, Current Planning Section 900 Oaksdale Avenue Southwest Renton, WA 98055-1219 If the submittal is hand delivered, submit at the address above. Your application is on "hold" from the date of this notice, until the date you are advised that the additional information satisfies this request or 14 days after the date the information has been provided. You will be notified if the Division determines that the information is insufficient. Please note that the supplemental information required after vesting of a complete application shall not affect the validity of such application. The deadline for the submittal of the necessary information is August 11, 2006. In the event ~ou feel extenuating circumstances exist, which may justify an extension of this date, you may submit such request, in writing, for consideration by this Department. Failure to meet the deadline shall be cause for the Department to cancel or deny the application. ' If possible, please submit all of the information in one package. If you have any questions, regarding the additional information or the submittal deadline, please call me at (206) 296- 7194. Sincere I~ ~ C&Projoct/Prog= Maaag~ II Current Planning Section Cc: Kim Claussen, Project/Program Manager Ill, Current Planning Section, LUSD w/enc Bruce Whittaker, Senior Engineer, Engineering Review Section, LUSD w/enc Kris Langley, Senior Engineer, Traffic & Engineering Section, KCDOT Application File w/enc Short Plat Application (File No. L05S0040) w/enc ® King County Department of Development and Environmental Services Land Use Services Division 900 Oakesdale Avenue Southwest Rcmon. Washington 98055-1219 Plat Screening Transmittal Preliminary Plat Application of Fleuve Des Voiles (formerly known as Soos Creek Plat) LUSD File No. L04P0002 Date of Information Request: May 11, 2006 Deadline for Submittal oflnformation: August 11, 2006 Please provide ten (10) copies of the following, unless otherwise noted. Drainage/Roads: • The conceptual drainage plan shows a conveyance system for the 1241 " Ave SE road improvement. Please revise the conceptual plan to address the stormwater detention and water quality requirements of the SWDM. Please include a detail of the proposed water quality design. • The routing of the 1241 h Ave SE out to SE 192"d St constitutes a change in the natural discharge location. Please add this issue to the adjustment request that is pending. This should be accomplished by contacting Mark Bergam, at 206-296-7270. • The previous drainage plan showed a proposed cutoff drain along the west and south property lines. Please revise the conceptual plan to address the offsite flow along these property lines. • Please note that a drainage adjustment has been submitted for review and is pending review and approval. • Please note that a road variance has been submitted for review and is pending review and approval. Revised Preliminary Plat: Provide 25 copies of a revised preliminary plat, as necessary, as a result of above-referenced requests for additional information. As a result of the review of the information, additional information (studies, revisions, etc.) may be requested at a later date. Further evaluation of these issues may result in the reconfiguration and/or loss of lots. Fleuve Des Voiles (fomierty Soos Creek Plat) -L04P0002 05/06 Flueve De Voilve: Drainage: Flueve De Voilve L04P0002 and Cogger Short Plat L05S0040 Bruce Whittaker 5/3/2006 Note that a drainage adjustment has been submitted for review and is pending review and approval. The conceptual drainage plan shows a conveyance system for the 124 th Ave SE road improvement. Please revise the conceptual plan to address the stormwater detention and water quality requirements of the SWDM. Please include a detail of the proposed water quality design. The routing of the 124th Ave SE out to SE l 92"d St constitutes a change in the natural discharge location. Please add this issue to the adjustment request that is pending. This should be accomplished by contacting Mark Bergam, at 206-296-7270. The previous drainage plan showed a proposed cutoff drain along the west and south property lines. Please revise the conceptual plan to address the offsite flow along these property lines. Cogger Short Plat: Drainage: Note that a drainage adjustment has been submitted and is pending review and approval. The short plat is dependent on the approval of the above plat ofFlueve De Voilve. The above screening comments also apply to the short plat. ~~b • So,.._ .a-b,e "'3k...\ c.,~,.. .. :t, ( '> ·~ -cq.1,-t-1,,.. l) ~T~ ~-W~ ~ ~~~ ~ . ~~ \-'"\ ~ l~~~ ftr-d-L~ -to..b,.. \1,{~. e:-tc.. - -7. s..:>~e.B"€--C-c:::>n'-'~ +~ tl.ca-~L~ . ~ . 1"' .rl ~~ * """"', ~ bee. Ca ,...b ~ . 2:,.~ l.:!> 6"'\0~ ~e.~~ .. t'e.-c:\c / ,c::& ~ r+. =7 ~'PI~~~ =? "~ ~~~~ aiec,~ ~- '\"t-OJ u~e... !! ~ c:::N~~~-f' O'< ~ \ (' '=:,\ ~~ ~ ~ • =. C c::s:r--. '-.f'G0!."'"1 ~ ~-I. • • Charles Spaeth From: Sent: To: Cc: Subject: Dear Ms. Langley, Charles Spaeth [cshaffercorp@att.net] Thursday, January 27, 2005 6:37 PM Kristen.Langley@metrokc.gov Bruce. Whittaker@metrokc.gov; Lisa. Dinsmore@metrokc.gov; Stephanie.warden@metrokc.gov; Kimberly Claussen L04P0002; Fleuve des Voiles On January 13 you were contacted by my civil engineer Bill Taylor ofTEC Engineering (425- 391-1415) to find out exactly what additional information you needed regarding the 192nd St. SE & SE I 24th Ave. intersection near the above-referenced project. On September 15, 2004 we had submitted (as part of a larger package regarding the above referenced project) three alternative plans for the north leg of this intersection (Sheet 3). In the December 13, 2004 request for additional information that we received back from Ms. Claussen (almost three full months after submittal), in comments Ms. Claussen ascribed to you, you requested "a conceptual (to scale) intersection improvement plan for the intersection of 124th Ave. SE/SE 192nd Street, based upon an actual survey of pavement edges, proposed curb lines, channelization, etc." As stated, we presented three possible alignments based on surveys, hoping for some meaningful feedback from the Roads Department about which would best suit your needs. On January 13th Mr. Taylor contacted you and asked what additional information you needed from him regarding the intersection. You told Mr. Taylor that you would be faxing to him something (we have never know what, exactly) that would clarify your information request. On January 21st Mr. Taylor left a message on your voice mail saying he had never received your fax. At 9:30 a.m. on January 27th, (Thursday) in a telephone conversation Mr. Taylor had with you, you stated that you thought you had sent him the the fax you had promised, but you couldn't remember. (At almost the same time on the 27th I left you a voice mail asking you to transmit the information to Mr. Taylor.) You told Mr. Taylor in that 1/21 phone conversation that you would go find what you thought you had faxed him, and immediately fax it to him again. By 5:30 p.m. Thursday, he had still not received it. What information do you want? Why does it take two weeks to transmit a simple request to Mr. Taylor for information? IN ADDITION: In response to another section of the same December 13, 2004 request for additional information sent to us by Ms. Claussen, in comments she also ascribed to you, you said: "Please provide a Level One traffic impact analysis, prepared by a licensed engineer with expertise in traffic engineering, that expands the limited scope traffic analysis (turn lane and sight distance) assessment previously submitted." In our September 15, 2004 submittal we included multiple copies of a Level One traffic impact analysis dated June 14, 2004, prepared by William Popp, Jr. an experience, licensed, traffic engineer (425-401-2124). The above comment lead us to believe you either never saw, or never read, the analysis we submitted. 1 Mr. Popp called you on January 14, 2005 asking why a Level One traffic analysis was being requested when one had been submitted months before. You told him, in fact, that you had not seen it. Mr. Popp transmitted to you four hard copies of the analysis on the same day. After two weeks Mr. Popp has neither received an acknowledgement that you received the analysis, nor any comments from you based on the content of the analysis. If you have not already done so, would you please extend to Mr. Taylor and Mr. Popp the professional curtesy of communicating with them following their repeated requests for clarification regarding the information you say you want? Respectfully submitted: Charles Spaeth Principal, Ravenna Development (206-526-8481) 2 LETTER OF INTENT June 24,005 Re: Yee Short Plat, L04S0065 To Whom It May Concern: Philip M. and Fanny Y. Yee ("Yee"), Husband and wife own the two tax lots 619900-0126 and 619900-0127 known as the Yee Short Plat application. Ritz Trust own Tax Lot 619900-0220 property known as the development of the Fleuve des VoHe.s (L04P0002), located adjacent and to the east of the Yee property. Ravenna Development. LLC, developer of Fleuve des Voiles (L04P0002) has an open escrow to purchase the Ritz Trust tax lot 619900-0220 and will complete the purchase upon preliminary plat approval of the development of the Fleuve des Voiles (L04P0002). The Soos Creek Water and Sewer District has indicated that the development of the Fleuve des Voiles plat will require a connection to the existing stubbed out water line on the Yee's property. The Yees are desirous of allowing treated storm water to drain through the future Fleuve des Voiles storm system. The Ravenna Development, LLC and the Yees have agreed to execute a Mutual Easement Agreement in the form attached upon the close of escrow to purchase the Ritz Trust tax lot 619900-0220. It is the intention of the Yees and Mr. Charles Spaeth, as Manager of Ravenna Development, LLC to sign the Mutual Easement Agreement in the form attached as soon as Fleuve des Voiles and Yee Short Plat receives preliminary plat approval from King County and the escrow closes on the Ritz Trust tax lot 619900-0220. YEES Address: 11431 -2381h Street SW Edmonds, WA 98020 Ravenna Development, LLC Address: 6839 Ravenna Ave NE Seattle. WA 98115 Attachment: Mutual Easement Agreement Form for Yees -Ravenna Development, LLC AFTER RECORDING PLEASE RETURN To: DE-EN LANG 10658 RIVIERA PLACE NE SEATILE, WA 98125 MUTUAL EASEMENT AGREEMENT Properties Parcel "A" Owner(s) The Ritz Trust (Ritz Trust) Tina Walters, Trustee Tax Lot 619900-0220 Number(s) Legal NORTHWESTERN GARDEN Descriptions TRACTS, DIVISION N0.5 LOT 2 OF KC SHORT PLAT NO 388021 RECORDING NO 8902210370 SD SHORT PLAT OAF -TRACT 11 OF NORTHWESTERN GARDEN TRACTS DIV NO 5 TGW S 240 FT OF LOT 1 OF KC SHORT PLAT NO 582064 RECORDING NO 8404200923 TAXABLE PORTION PARTIALLY EXEMPT UNDER RCW 84.36.381 THRU .389 Mutual Easement Page 1 of 5 Ritz Trust -Yee Parcel "B" Philip M. Yee and Fanny Y. Yee 619900-0126 and 619900-0127 TRACT 6, NORTHWESTERN GARDEN TRACTS, DIVISION NO. 5, ACCORDING TO THE PLAT THEREOF RECORDED IN VOLUME 47 OF PLATS, PAGE 90, RECORDS OF KING COUNTY, WASHINGTON; EXCEPT THE WEST 343 FEET THEREOF. This Mutual Easement Agreement is made this _ day of April 2005, by and between Tina Walters.Trustee of the Ritz Trust hereinafter termed the 'Trustee', and Philip M. Yee and Fanny Y. Yee, hereinafter termed the 'Yee.' Trustee and the Yee are collectively referred to as "Parties." BACKGROUND 1. Trustee's Property or Parcel "A" Trustee is the legal owner of the property located at 12208 SE 192nd Street Renton, Washington, tax lot 619900-0220, legally described as follows: NORTHWESTERN GARDEN TRACTS, DIVISION N0.5 LOT 2 OF KC SHORT PLAT NO 388021 RECORDING NO 8902210370 SD SHORT PLAT DAF -TRACT 11 OF NORTHWESTERN GARDEN TRACTS DIV NO 5 TGW S 240 FT OF LOT 1 OF KC SHORT PLAT NO 582064 RECORDING NO 8404200923 2. Yee's Property or Parcel ·s· Yee is the legal owner of the property located at 12040 SE 19CJ1h Place and 12052 SE 190th Place, Renton, Washington, tax lots 619900-0126 and 619900-0127, legally described as follows: Tract 6, NORTHWESTERN GARDEN TRACTS, DIVISION NO. 5, according to the plat thereof recorded in Volume 47 of Plats, page 90, records of King County, Washington; Except the West 343 feet thereof. 3. Water Main Easement Trustee has plan to develop Parcel "A" and desires to have an easement across the southerly ten feet of Parcel "B" for the installation and connection of a water main to the water distribution system of Soos Creek Water and Sewer District. 4. Drainage Easement Yee desires to develop Parcel ·s· and needs a drainage easement for the installation of a drainage pipe across Parcel "A" for connection to the larger drainage collection system on Parcel 'A'. Mutual Easement Page 2 of 5 Rilz Trust-Yee AGREEMENT The parties agree as follows: 5. Storm Drainage for Parcel 'B' (a). Trustee agrees to create no less than a ten-foot-wide storm drain easement, or as required by King County (or its successor), in which a storm drainage pipe will be installed to receive direct runoff or runoff from a storm detention system on Parcel "B' as may be required. (b). Trustee shall determine the exact location of said storm drain easement which shall run easterly from the eastern boundary of Parcel ·s· to the nearest feasible point of connection to a larger storm drainage system that shall service Parcel "A.' The storm drainage pipe as described in 5(a) shall not include any portion that may be used to service any potential or resulting subdivided lot(s) in Parcel "A." (c). Trustee will be responsible for the selection and hiring of professionals for the design and construction of the storm drainage pipe described in (5a), in a manner acceptable to King County (or its successor), as part of the larger drainage system that shall service Parcel 'A.' (d). Yee shall pay for the design, engineering and construction of the storm drainage pipe described in (5a) directly to the engineer, consultant and contractor as itemized bid items and in separate billings. (e). The drainage of Parcel 'B' shall in no way cause Trustee to bear additional costs for engineering, catch basin installation, or for the construction of settlement or detention facilities, etc. as a .result of the additional runoff from Parcel 'B. • Yee shall not be responsible for the cost of any portion of the storm drainage system that may benefit Parcel "A.· 6. Water Main Easement for Parcel 'A' (a). Yee agrees to grant no less than a ten-foot-wide easement to Soos Creek. Water and Sewer District for a water main that shall be designed or approved by Soos Creek Water and Sewer District The easement will run from the eastern boundary of Parcel "A', through an area defined as the southerly thirty (30) feet of Parcel 'B.' (b). The owner of Parcel ·s· agrees to grant no less than a thirty-foot-wide construction easement to accommodate installation of the water main. Mutual Easement Page 3 of 5 Ritz Trust -Yee (c). This water main shall be installed at the sole cost of Trustee. (d). Trustee agrees to restore Parcel 'B" to its original condition before construction. 7. All provisions herein are to be completed within ten years from the date of this agreement 8. This agreement is made for the mutual benefit of both parties; neither party will receive consideration beyond those described in this Agreement 9. If any suit or action is commenced by either party, or their successors and/or assigns, to enforce any rights under this agreement in addition to costs provided by statute, the prevailing party shall be entitled to an award of attorney's fees in such sum as the Court may adjudge just and reasonable. 10. The provisions of this Agreement shall run with the land and shall be binding upon Mure owners of Parcel "A" and Parcel "B.' according to the terms set forth herein. IN WITNESS WHEREOF, we have set our hands and seals this_ day of March 2005. Trustee: Tina Walters, Trustee of the Ritz Trust Mutual Easement Page 4 of 5 Ritz Trust -Yee Yee: PhilipM. Yee FannyY. Yee STATE OF WASHINGTON) COUNTY OF KING ) ss. On this __ day of April 2005, before me personally appeared PHILIP M. YEE and FANNY Y. YEE, to me known to be the individuals described in and who executed the within and foregoing instrument, and acknowledged said instrument to be the free and voluntary act and deed of said Grantors, for the uses and purposes therein mentioned. WITNESS my hand and official seal hereto affixed the day and year above written. STATE OF WASHINGTON) COUNTY OF KING )ss. Print Name: ________ _ NOT ARY PUBLIC in and for the State of Washington Residing at: My commission expires: _____ . On this __ day of April 2005, before me personally appeared Tina Walters, to me known to be the Trustee of the Ritz Trust described in and who executed the within and foregoing instrument, and acknowledged said instrument to be the free and voluntary act and deed of said Grantees, for the uses and purposes therein mentioned. WITNESS my hand and official seal hereto affixed the day and year above written. Mutual Easement Page 5 of 5 Ritz Trust -Yee Print Name: ________ _ NOT ARY PUBLIC in and for the State of Washington Residing at: My commission expires: ____ _ r-.-&...._C"" b I,, c::t~ --- ® KlngOUlly nap en tit of. DevelasirMnl 111d Enffl01w1t1ntal 8ervk:a .__ __ _ 9000 htdeMeAwnuaS........ Ronlon.Yl'aoMlgbl 98055-1219 206 2!Ml 8600 TTY:ZU.29&-7217 Alternative formats available upon request °""" Appllcallo,, Numbel(s): ~~(C~~~~[Q) ------------FEB 4 2004 a a a a a a ---a a 0 a a 0 0 Building Pennll Clearing & Gradqj Permit Te,npanuy Use Permit Binlln9 Sll9 Plan Sle Development Penni Boundary Una Adjuslmenl Short SUbdMlllon Formal SUbdMslu., Utban Plaia18d DB\! I :11wneut Plat Ms. Bibi Plat Vacation Road Variance Drainage Variance or Adjuallnent Rlghk,f-Way Use Pemil Shon!llne Exemption 0 0 0 a a a a Cl Cl Cl 0 ., Cl Cl Cl a l<.C. D.D.E.S. 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'·-z::-/ , I \F--------'li ,.(~/ ;:__---!_) I 5Pot, co"~ /I'',', i'", _. ?-(1,, '' ··, A ., \ \ \ ,A, \ \ \ \ . April 5, 2004 Kim Claussen -Project Manager Chris Langley -Streets Plat Review Engineering Roads Division, KCDDES Re Soos Creek Plat -L04P0002 School Routes Dear Plat Reviewers .··'c:~? ·: :-' ,,,-:·, - ·-"" ' · ... ' j' E .' .· I ~ •-,. I K.c o.o.f:s Attached is the map showing the routes to the Elementary, Junior and High school for the subject plat. Note that all three are within one mile, no bussing occurs. The walkways exist continuously to each school. They are either 5' wide sidewalks, 8' wide paved shoulders or 8' wide paved shoulder with a curb separating the traveled way. The Soos Creek development has proposed a public road extension to 124 Ave and in conjunction proposes a 5' sidewalk from the development to SE192"d thus providing continuous walkways to the schools. For any additional data please contact the undersigned. Sincerely0 /.o&--~-- Rick Boston BD&D Co LLC 206-755-1617 • ~ ..... Soos Creek Develo,Sment EXISTING WALKWAYS TO SCHOOOLS '\ ::!; Cl .... ·:,,, oil( -=~ ti lmtl IT IS _/i., 111 SQ<a§ CREEK PLAT ,.. ..,(:ii! !J:i! I . ~ Sidewalk (Propol~f /"~ . 111~;:l ST 1 : -~ J.lQ_IJIJ _I J ._ 8' widE:,paved ~alkway -~ mile~ t ·~ •yw"'I '"'I~, 1-~-~ J96TH /.--.. 14':Ci~±'!i "Jj U 1 , ·: lf-200TH_JL j.,, - .... ... ~ Ill ··u i\-4 , ta ~, ' !fh::.JI §E ~·i?· ~ ~, i!Cj .t,j ----t~·-= :_.;;..,,§.'.Voll ... ... \ \ ' ® King County Department of Development and Environmental Services 900 Oakesdale Avenue SW Renton, WA 98055-1219 December 13, 2004 Charles Spaeth 6839 Ravenna Ave NE Seattle, WA 98115 RE: Notice of Request for Additional Information or Studies Application No. L04P0002 -Soos Creek Date Filed: February 4, 2004 Date of Complete Application: October 1, 2004 Dear Mr. Spaeth: Thank you for your September 2004 submittal. The Subdivision Technical Committee (STC) has reviewed the additional information submitted. The STC has concluded that additional information, a portion of which was previously requested, is necessary to continue the review of the Soos Creek proposal. The information is described on the enclosed plat screening transmittal. When submitting the requested information, include a copy of the plat screening transmittal and retain a copy for your records. Provide a cover letter, which lists how each item, was addressed. Any clarification or explanation of the submittal can also be included in the cover letter. Please submit the information to: King County Dept. of Development and Environmental Services Land Use Services Division ATIN.: Kim Claussen, Project Manager Ill, Current Planning Section 900 Oaksdale Avenue Southwest Renton, WA 98055-1219 If the submittal is hand delivered, submit at the address above. Your application is on "hold" from the date of this notice, until the date you are advised that the additional information satisfies this request or 14 days after the date the information has been provided. You will be notified if the Division determines that the information is insufficient. Please note that the supplemental information required after vesting of a complete application shall not affect the validity of such application. The deadline for the submittal of the necessary information is March 14, 2005. In the event you feel extenuating circumstances exist, which may justify an extension of this date, you may submit such request, in writing, for consideration by this Department. Failure to meet the deadline shall be cause for the Department to cancel or deny the application. If possible, please submit all of the information in one package. If you have any questions, regarding the additional information or the submittal deadline, please call me at (206) 296- 7167. im Claussen, Project Manager Ill Current Planning Section Cc: Rick Boston w/enc Lisa Dinsmore, Supervisor, Current Planning Section, LUSD w/enc Bruce Whittaker, Senior Engineer, Engineering Review Section, LUSD w/enc Nick Gillen, Senior Ecologist, Critical Areas Section, LUSD w/enc Larry West, Senior Geologist, Critical Areas Section, LUSD w/enc Kris Langley, Senior Engineer, Traffic & Engineering Section, KCDOT w/enc Application File w/enc ,, f " King County Department of Development and Environmental Services Land Use Services Division 900 Oakesdale A venue Southwest Renton, Washington 98055-1219 Plat Screening Transmittal Preliminary Plat Application of Soos Creek LUSD File No. L04P0002 Date of lnformatiorfRequest: December 13, 2004 Deadline for Submittal of Information: March 14, 2005 Please provide ten (10) copies of the following, unless otherwise noted. Note, the following items are in addition to the information requested for complete application (see February 27, 2004 letter). Utilities/Sewer Line: The proposed construction of sewer line(s) through the wetland is not a permitted alteration under KCC 21A.24. Provide an alternative route or method of construction (i.e. boring) or submit for a reasonable use exception application (RUE) if this is proposed to be constructed by the developer or a . PAUE if construction proposed by the utility district Wetland Mitigation Plan: Submit a plan prepared by a qualified biologist which identifies proposed buffer mitigation. Geotechnical Study: Provide an additional geotechnical study prepared and stamped by a qualified geotechnical engineer and/or an engineering geologist, licensed in the State of Washington. The study must include enough subsurface information regarding groundwater and soil conditions to perform a slope stability analysis. Is the site underlain by a significant layer of in place till as indicated in the previous geotechnical report for this project or could there be some ice marginal deposits similar to those that appear to underlie landslides to the south along Soos Creek? It may be necessary to drill one or more deep borings in order to obtain the soil (type and strength) and groundwater conditions necessary to be able to perform this slope stability evaluation. In addition, the study/report must provide recommendations related to the construction of the roads, lots, rockeries, retaining walls and detention/infiltration pond. Please contact Larry West at 206- 296-7131 if you have further questions regarding the additional geotechnical information requested. Conceptual Grading Plan: Provide a conceptual grading plan for the lots and roads and indicate areas of rockeries and/or proposed retaining walls and preliminary heights. Note, depending upon the height of proposed rockeries and walls, additional setbacks and/or review may be necessary. Drainage: The following information must be prepared and stamped by a civil engineer licensed in the State of Washington. • Submit a geotechnical study performed by a geotechnical consultant which evaluates the feasibility of infiltration on the site. This study should include depth to seasonal high ground water through the winter season. Other options should be evaluated to determine if feasible (i.e. conventional stormwater detention). The Department is concerned that the proposed infiltration facility will not perform as indicated. Please address these concerns(see attached 9/28/2004 comments from Steve Foley). Infiltration tests were apparently not taken where the infiltration facility is proposed. The stormwater facility should be designed with the appropriate safety factor and infiltration feasibility testing per the KCSWDM. The conceptual drainage plan should be revised to incorporate any proposed revisions. • A surface water adjustment from Core Requirement 1 is required to combine the onsite and access road subbasins The site is within a split Level 2/Level 1 Flow Control area per the KCSWDM. If the proposed conceptual drainage plan reflects only Level 1 Flow Control, thls aspect should be added to the adjustment request. • Offsite upstream drainage enters the site along the west boundary. Include a mapping of the onsite subbasins and upstream offsite area tributary to the site. (per Section 2.3.1.1 of the KCSWDM Task 1 ). Please revise the conceptual drainage plan to address the offsite flow, and provide provisions for conveyance and bypass of the offsite flows. Soos Creek Plat -L04P0002 12104 Roads: • Please provide a Level One traffic impact analysis, prepared by a licensed engineer with expertise in traffic engineering, that expands the limited scope traffic analysis (turn lane and sight distance) assessment previously submitted. • Provide a conceptual (to scale) intersection improvement plan for the intersection of 1241h Ave SEISE 192°d Street, based upon an actual survey of pavement edges, proposed curb lines, channelization, etc. Demonstrate alignment of the proposed improvements with the existing improvements to the south on 124th Ave SE (b) provide a conceptual revision of either the north or south leg to eliminate any offset, or (c) apply for and receive a variance to the KCRS for the construction centerline to construction centerline offset. • Revise the plat plan to eliminate the angle point in the horizontal alignment of the proposed plat street and substitute a "low speed" horizontal curve per the KCRS. The revision may result in other modifications and comments to the plat. This appears, at least, to result in the PAT's exceeding the+/- 5 degree criteria for centerline angle of perpendicularity. • Provide a preliminary centerline profile for the proposed plat street, west of 124th Ave SE • Provide additional information, specifically curve data, for the centerline alignment of the overall plat street system: 124th Ave SE extension and SE 191'1 Ct. Significant Trees-S0-220: Provide a conceptual retention/replacement plan which addresses S0-220/KCC 21A.38.230 -Significant Trees Revised Preliminary Plat: Provide 25 copies of a revised preliminary plat, as necessary, as a result of above- referenced requests for additional information as well as number all lots and provide clear delineation between property lines, lot lines, tracts, right-of-way, etc. As a result of the review of the information, additional information (studies, revisions, etc.) may be requested at a later date. Further evaluation of these issues may result in the reconfiguration and/or loss of Jots. Soos Creek Plat -L04P0002 12/04 .. ' ' From: Foley, Steve Sent: Tuesday, September 28, 2004 3:49 PM To: Claussen, Kimberly Cc: Whittaker, Bruce; Kahan, Josh Subject: Soos Creek Plat L04P0002 Kim, thank you for the opportunity to look at the revised submittal for the Soos Creek Plat. noted that the geotech report does not include complete soil logs, that the percolation tests were not done where the infiltration facilities are proposed, and there is no indication of the soils present below the bottom of the proposed facilities. Also noted that the engineer took the raw percolation test data with no adjustments or safety factors to do the preliminary facility design calculations. Based on the information contained in the the submittal, I am concerned that the proposed infiltration facilities will not perform as indicated. I attached our comments on the previous version of this project for your reference. Let me know if you have any questions. -- Steve FW: Soos Creek Soos Creek Plat Plat l04P0002 L04P0002 Steve Foley Senior Engineer Water and Land Resources Division 201 S Jackson, Seattle 98104 206-296-1973 FAX 206-296--0192 Claussen, Kimberly From: Foley, Steve Sent: To: Thursday, February 19, 2004 1 :38 PM Claussen, Kimberly Subject: FW: Soos Creek Plat L04P0002 Hi Kim, looks like there are major issues with their proposal and the adjacent Soos Creek wetland and buffers. Here are remarks from Josh Kahan, the Green River Basin Steward. I will try to talk with Bruce and Nick before the screening meeting, but I don't plan to attend at this point. Thanks for the opportunity to provide input! --Steve -----Original Message----- From: Kahan, Josh Sent: Thursday, February 19, 2004 11:43 AM To: Foley, Steve Subject: RE: 7 acres, 35 lots, Soos Creek Hi Steve. SEPA checklist is very weak. No mention of the large forested, open-water wetland to the east. The maps indicate that the wetland buffer will be encroached upon. Who did the wetland delineation and has it been provided? Answered "none" to presence of fish and wildlife. Soos Creek contains chinook and several other salmonids. Quite a bit of wildlife use in this area actually (great blue heron for example). No mention of mitigating potential impacts to these resources. No mention of nearby power lines. Also, DDES may want to verify the acres of the parcels. The area proposed for development does not appear to total 6.9 acres. -----Original Message----- From: Foley, Steve Sent: Wednesday, February 18, 2004 3:35 PM To: Kahan, Josh Subject: 7 acres, 35 lots, Soos Creek Josh, I have the screening package for the 35-lots Soos Creek plat if you would like to see it. --Steve Steve Foley Senior Engineer Water and land Resources Division 201 S Jackson, Seattle 98104 206-296-1973 FAX 206-296-0192 1 • ' ' Claussen, Kimberly From: Sent: To: Subject: Another comment. -----Original Message----- From: Kahan, Josh Foley, Steve Tuesday, February 24, 2004 11 :26 AM Claussen, Kimberly; Whittaker, Bruce Soos Creek Plat L04P0002 Sent: Thursday, February 19, 2004 5:07 PM To: Foley, Steve Subject: RE: 7 acres, 35 lots, Soos Creek. Hi Steve. I wanted to provide one other comment. There are beavers throughout the Soos Creek system. Any adjacent development should consider the potential for flood levels to fluctuate in the future. 1 I f From: Taylor Engineering Consultants _,) Bill Taylor -~" -¥-Cce__ __ SUBMITTAL MEMORANDUM r-:::i > To: Date: lj;~{ _,i -;/i .··• . -~· u ,~-.. /~·~-;;:\ Kim Claussen, King County DOES S£p 1 ·-·; : 1 ; September 15, 2004 6 2004 Li:) Topic: Soos Creek Plat -KC App. No. L04P0002 -Comment Res~onsD. O. E. "' -v The 9/15/04 resubmittal of the Soos Creek Plat, King County project Application No. L040P0002, includes a significant redesign of the plat layout. There is also a new project engineer on the project. We used the previous County review letters for guidance with this resubmittal, but there is a significant amount of new documentation included in this Preliminary Plat submittal. Some of the previous review comments are no longer applicable. In addition to the documents itemized in your February 27 and March 17 letters, we are submitting 10 copies of a "Road Access/Buffer Impact Mitigation Selected Action Plan, which describes proposed buffer enhancement in-lieu of averaging to address the buffer impacted by the access road. This plan was reviewed in concept with Nick Gillen, King County wetlands specialist. Nick visited the site on March 12, 2004. Also I am including 10 copies of the Water and Sewer availability certificates in case they have not been submitted to date. Our project design includes requirements for road variances for grade and turning radius, and clarification whether a drainage variance is necessary for Level 1 drainage infiltration/detention design. The following table itemizes our response to your comment letters dated February 27, 2004 and March 17, 2004. Please call if you have any further questions or comments. Response to Letter Dated February 27, 2004 Comment Resconse 1. ... Application for Land Use A complete Application for Land Use Permits Permits, ... page 2 was not including page 2 is attached. completed . 2. . . . topographic map ... based The new drawing submittal set (10 copies submitted on actual survey. under separate cover) includes the complete topographic survey stamped and signed by the responsible PLS. 3. Include Parcel A ... or remove ... Parcel A is included in the plat with the exclusion of the southerly 240 feet. This is noted, as prescribed by Ray Floren!, King County Sr. Engineer, in the Legal Descriptions and Project Plan on the drawing set title sheet. 4. ... revise Level 1 Off-site The new TIR includes the current "drainage Analysis to include complaint complaints" as obtained from the County (10 copies investiqation ... submitted under separate cover). 205 Front St S. • P.O. Box 1787 • Issaquah, WA 98027-0073 • tel. (425) 391-1415 • fax (425) 391-1551 • www.teccivil.com Memorandum -Kim Claussen 9/15/04 Page 2 5. Resubmit page 16 of the environmental checklist... 1 O copies are attached. Response to Letter Dated March 17. 2004 Comment Resnonse 1. Recreation Space: 1 O copies of a Conceptual Recreation Plan are attached. 2. Walkways: 1 O copies of an inventory and summary of the walking routes to the neighborhood schools are attached. 3. Letter of Intent: 10 copies of a letter of intent to convert an existing easement to County property for public road are attached. 4. Field Survey: The new drawing submittal set (10 copies submitted under separate cover) includes the complete topographic survey stamped and signed by the resnonsible PLS. 5. Utilities/Sewer Line: The developer is coordinating with Soos Creek Water and Sewer District to establish a Reasonable Use Extension (RUE). The District will prepare the RUE (pending). The attached Water and Sewer availability certificates (10 copies) show the District orooosed sewer connection throuah the wetland. 6. Wetland Study: 10 copies of the Wetland Evaluation and Delineation Reoort were submitted under seoarate cover. 7. Geotechnical Study: 10 copies of the Geotech Report were submitted under senarate cover. 8. Conceptual Grading Plan: The new drawing submittal set includes the Preliminary Grading and Drainage Plan. 1 O copies submitted under seoarate cover. 9. BPA: Not Applicable. BPA easement does not cross the orooertv line. 10. Regional Utility Corridor: I assume that this comment is applicable only if the Bonneville Power Authority line crosses the plat, which ii does not .. 11. Drainage: • The new TIR includes the complaint analysis . • The new TIR includes a downstream drainage map. • The new TIR describes and details how the proposed system meets the requirements of the KCSWDM for flow control and water quality standards. Memorandum -Kim Claussen 9/15/04 Page3 12. Roads: 13. Revised Preliminarv Plat: • The revised conceptual drainage plan details the proposed drainage system, including water quality and flow control pond and tank sizes, both for the site and for the 1241h Ave. SE runoff. • The geotechnical study referenced in item 7 above describes the infiltration feasibility evaluation. • Onsite subbasins? All runoff from the site flows in a dispersed manner east into the Soos Creek wetlands. The current proposal is to infiltrate all runoff just above (west) of these wetlands. This should meet the intent of Core Requirement 1. • ? The proposal is to pipe all developed runoff to the base of the hill, where the Flow Control requirement is Level 1. Will this still require an adjustment request since all the runoff is being returned to the ground at the base of the hill, where it currently flows, whether overland or subsurface? • 1 O copies of the Traffic and Intersection Report were submitted under separate cover. • The Preliminary Internal Plat Road Improvements Plan includes three (3) alternatives for the 124th Ave SE/SE 192nd Street intersection. We will await direction from King County regarding which . of the three alternatives is preferred, recognizing that Alternative 3 will not require a deviation from the road standards, but will require a dedication from King County Parks Department under a prescriptive rights use of the southeast comer of the exiting/historic roadway. • The entire plat layout, including road alignments has been revised for this submittal. As a result comment on the previous alignment is no longer applicable. Please see the new Preliminary Internal Plat Road Improvements Plan and comment. • Centerline profiles are provided for all proposed roads on the Preliminary Road and Utilities Profile Drawings. • 10 copies of the curve tables for the currently proposed alianment are attached. 25 copies are attached. SELECTED ACTION PLAN for ROAD ACCESS/ BUFFER IMPACT MITIGATION r::, --i O) 1 cC I ~ ' -i '".:::". , , ''J" /! <: ' '. ~ .---, . r ! /.:::.::, r··,. While this Selected Action Plan is conceptual during the preliminary plat prc:e;f ~t Sl/i'alt7~4 f0) be finalized during detail engineering and approval. It is incorporated as the RE)l(elopers wish to communicate the proposed strategy for buffer impact and mitigation. '6t.isl.QJ c . limited access road location and narrow property boundary at the buffer location this · '· 8 urban area development will require good coordination to help County and developers work toward the best solutions. Although no regulated wetlands exist on the subject property two issues arise on the east property line where the large class 1 wetland's 100' buffer is impinged on by the access road and drainage. The wetland area involved is "area A" in this wetland report, which lies to the east on the adjacent parcel and is owned by the County. One issue is offsite and the other issue is onsite. Offsite {southeast) Road Access The existing 20' wide gravel access road, known as 124 Ave SE, currently lies within the 100' buffer. The existing easterly edge of this road lies west of the wetland delineation line. The distance from wetland delineation line to road edge averages approximately 80'. This mitigation plan proposes that this road has for many years served as the delineation line for the buffer; with existing homes directly adjacent. Widening this road ten feet will occur on the westerly, upland side away from the wetland; this is currently existing driveways and lawns. Note area AA on the attached map showing this road area; of the 5700ft2 \ring within the 100' buffer line, 370oft2 is existing impervious shared road and 2000ft feet is existing impervious individual driveways and lawns. Therefore mitigation for paving this road should not be required or be minimal. Onsite Access Roadway The access roadway, 124 Ave SE, must continue into the subject property and then tum westerly away from the wetland area. The access road would convert pervious upland of approximately 6,BOOtf within the 100' buffer to paved road and sidewalk as shown as area BB. We are proposing extensive mitigation in area DD to compensate for this. It is also requested that the buffer be reduced from 100' to 75', in the NE corner area CC, to facilitate drainage facilities which can not be located higher up the hillside (west). Geotech reports indicate that drainage moved up the slope is not reasonable and development depends on this well drained area for infiltration. Infiltration is highly desirable for ground water recharge and could work well if facilitated on this site. This reduction would comprise an area of 4875tt2 As buffer averaging is not possible the developer proposes: 1 )extensive mitigation in area DD to improve the buffer quality and 2)to utilize mitigation banking for offsite Boston Design and Development LLC Buffer Impact and Mitigation 031104 Boston 1241 h Ave SE Wetland Report improvements. To compensate for these two onsite buffer impacts totaling 11.675 ff, mitigation would be required and is suggested as follows. Mitigation Plan Per code 21A.24.330 article N this road crossing is permitted. Note that no impact to the wetland exists. only the buffer area. The permitting criteria are met as follows: 1. No alternate access is practical 2. Impact held to a minimum and mitigation is proposed 3. No change in wetland hydrology 4. No diminishment of flood storage in the wetland 5. Construction to be in the summer periods (the construction is in sandy upland and existing road areas so this specific requirement will likely be requested to be waived). Per code 21A.24.340 article D. the goal is to insure that the buffers remain effective in protecting the wetland and even enhance the area by actually improving the wetland hydrologic or habitat function. Because wetland hydrology and vegetation will be unchanged and unaffected by the proposed development, the focus is on improving the buffer itself. Currently the soils are dry and sandy with upland vegetation in the buffer area. The wetland hydrology is fed by underground runoff flow off the hillside under the buffer at the hardpan level 8 to 10 feet down, this will be unchanged as the drainage proposal is to infiltrate to recharge the wetland. Thus for mitigation, it appears that the best scenario is to focus on habitat. Consideration was also given to add to the wetland inventory by turning the buffer into wetland.(perhaps a wetpond and supplemental wetland function (planting)) as enhancement per 21A.24.340.G. But this does not appear feasible because of two reasons. One, geologic soil tests show deep sand/gravel and high infiltration rates thus with no water available in summer the wetland plantings could not be maintained naturally. Two, due to the large acreage area of the adjacent class 1 wetland, a small wetpond would be insignificant in adding hydrologic function. The conclusion then is to focus only on habitat function for the most effective enhancement approach. Therefore, it is proposed to heavily plant the buffer area DD with large trees (likely Douglas fir at 12' on center) and appropriate native upland underbrush. The land onsite available is approximately 190' x 70' or 13.600ft2. Code 21A.24.340.E states wetland loss shall be replaced on a two for one basis; no wetland is being lost or even touched, only buffer is affected. Note that this subject parcel reduces to a relatively narrow easterly boundary then up a 25% slope into low permeable soils and thus additional land is not available for buffer averaging. Thus the proposal is to improve the existing onsite buffer at one to one ratio. Any additional mitigation required to compensate must be done offsite through the mitigation banking program (21A.24.340.F). The developers first choice is planting offsite along the east property line to enhance the buffer alon.9 a longer length of the wetland delineation edge, area EE being 12' x 460'or 5,500ft'. This offsite planting on Boston Design and Development LLC 031104 Boston 1241 " Ave SE Buffer Impact and Mitigation Wetland Report public (County property) would have to be approved by the property managing agency, the County Parks Department. If they are not interested in increasing the density of forest cover for habitat, then the developer would need County support via mitigation banking to fund improvement somewhere else Thus in summary, 11,675 tt2 of buffer area would become new roadway/sidewalk and drainage and 13,600ft2 onsite (and possibly an additional 5,500ft2 offsite) of buffer area could be enhanced for habitat. Per code 21A.24.340 article H the proposed planting in this relatively large continuous block will help alleviate wildlife fragmentation and definitely improve habitat for birds and cover seeking species. Boston Design and Development LLC Buffer Impact and Mitigation 031104 Boston 1241h Ave SE Welland Report BASIN l3 POLE W / UNOERGAOUND ("I) POLE 'USER ~ETER 'fDRANT ~E TEA )CATION /ALVE ~ANHOLE _VE 'lG SEPTIC TANK 4TED CORNER T 30X (I) (I) f'J ED Q) F GRAVEL If!; T CENTERLINE IF PAVEMENT -'-----/---------1---t___.. D 0 BUFFER TE WALK ,ED BOUNDARY AND GUTTER - I'-' ~ r··· ----~~~~ E / z '------------··1 I ... . ......... .. a .. -------------, ~ l Hif.."'E i !~ ~" L_::_J o>. '\A \ A15 ~5 ® I SP4 z <( .J 12. - z 0 l-o <( C w l-o w .J w V, ~ ' ' . \I~ -\ - \I ~ <t: :· k 80' EASEJIEN'F PER I O <( : HORT PLAT.STRIP TO BE DEEDED : COUNTY FOR RICHT-OF-WAY. f k } JA9 I: l..., ([J ~f "Al ~ ..., AB ~ ; j AA3 ~ I\ 1·: ~ Ill /-!t 7 (;1lf1#31:::~ / ~ _ -· t iw A ~, ~ J A \ 1x 04/200• SOOS C!{EEJ( WATER E-r SEWER DIS11?ICT !•1616 '.;L IY2nd SL • PU Box :iRIIJ9 ' R<'11lo11, IV/\ 'l~l!°ok-ll'YI • l'honc· (2".lJ 630-9900 • hix i2S,) r,JO-S2K9 April 6, 2004 Mr. Rick Boston 13425 E Lake Kathleen Dr SE Renton, WA 98056 RE: Parcel Nos. 619900 0220, 0240, 0260 Proposed 38 lot plat Dear Mr. Boston: The above referenced proposed project has been reviewed for sewer and water availability and the following information has been determined based on the preliminary site layout provided. All information will be updated and final requirements determined when final approved site plans are submitted. Listed below are the developer extension fees for the proposed sewer and water main extensions required to serve the above referenced proposed project. The "FULL" quotes are for District engineering_ The "OPTIONAL" quote allows the developer to hire an outside engineer for the water and sewer designs. SEWER: FULL OPTIONAL 3,020 If main extension $ 31,579,20 $ 25,284.20 Plan review 00.00 2,869.00 Guaranty deposit 906.00 906.00 Confonnance deposit 570.00 570.00 Easement 3,000.00 3,000.00 WATER: FULL OPTIONAL 2,545 If main extension $ 15,107.30 $ I 0,011.60 Plan review 00.00 2,926.75 Guaranty deposit 763.50 763.50 Confonnance deposit 570.00 570.00 Easement 2,000.00 2,000.00 Currently, the sewer general facilities charge for this area is $2,047.00 per unit and the · water general facilities charge is S 1.581.00 per unit. This plat is subject to the SPU Facility charge which is currently $7 I 3.00 per 5/8 x Y. meter or ERU. ALL CHARGES ARE SUBJECT TO CHANGE WITHOUT NOTICE SOOS CRE[K WJ\TER 1, S[WEU DIS'TRJCT April 6, 2004 619900 0220, 0240, 0260 Page l\vo Water service can be made available to this site via a connection to the existing water main in SE 192"'' St, installation of onsite waler mains and an offsite cmmcction to the west, providing the necessary loop system. Developer is responsible for acquiring information from the King County Fire Marshal regarding fire hydrant and fire flo rem,irements. Water layout is subject to the final requirements for fire hydrant locatio. _ ,ire flow. Onsite and offsite easements will be required for both water and sewer construction. King County right of way pennits will be needed for work in SE l 92"d St. Grading permits may be necessary for offsite water and sewer main construction. Sewer service can be available to this site via a com1ection to the existing manhole and sewer main east of the site, installation of onsite sewer mains to property lines as indicated in layout to serve upland properties. A BP A permit will be required for any work in the ex1stmg BP A easement area. Additionally, wetland/sensitive area permits may be required for any work in or near wetland and sensitive areas. Please provide wetland reports as soon as available. Wetland survey is required to verify the I ocation oft hep roposed sewer main. Design survey is included in fue above quote for the offsite sewer extension. Developer/contractor is responsible to ensure that the existing IO" force main is to remain in service during construction. The force main runs parallel to fue existing sewer main, it is also the responsibility of the Developer/contractor to locate and protect fue force main from damage during construction. When you are ready to continue with a developer's extension agreement, please fax or mail a request and state whether you would like to have "full" or "optional" engineering. Please contact me at (253) 630-9900 extension 107 if you have any questions. Sincerely, Alice R. Marshall Supervisor, Development Administration Enclosures I • This certificate provides information necessary to evaluate development proposals. Certificate: 3748 SOOS CREEK WATER AND SEWER om~CT CERTIFICATE OF WATER AV AIL~I.gl~~ 17 7 Type: Preliminary Plat or PUD : S("p I'-'= (/ /Jl ~ Applicant's Name: Rick Boston kc 6 llVy / /}/ Proposed Use: 38 Single Family Residence D.o . ~- ·12..s Location: Lot: 11 Block: Development: NORTHWESTERN GARDEN IRA Parcel: G 19900 0220 Address: 12208 SE l 9.2ND ST, RENTON Information: lncludes Parcels 619900 024~ & 0260. See attached proposed layout. • WATER PURVEYOR INFORMATION I. a [J Water will be provided by service connection only to an existing Null inch water main, Null feet fro111 the site. And I Ot/1er b 0 Water service will require an iruprovemnt to the water system of: Proposed plat requires the installation of approximately 2,545 lf of water main. All plans must be approved by the King County Fire Marshal and Soos Creek Water and Sewer District. 2. a ~ The \vater system is in conformance with a County approved water comprehensive plan. b r-, _J The water system improvement will require a water comprehensive plan amendment. 3. a 0 The proposed project is within the corporate limits of the district, or has been granted Boundary Review Board approval for extension of service outside the district or city, or is within the County approved s~rvice area of a private water purveyor. b Ci A1mexation or Boundary Review Board approval will be necessary to provide service. 4. a [,21 Water is/or will be available at the rate of flow and duration indicated below at no less than 20 psi measured at the nearest fire hydrant 35 feet from the building/property (or as marked on the attacl,ed map): Rate of Flow: 1,000 gpm Duration: 2 hours b CJ Water systems is not capable of providing fire flow. Cross Counection Control devices must be in conformance with state laws. Service i.5 subject to the applicants agreement to comply and perform to make such installation and/or com1ections to the standards, regulations, requirements and conditions of this District and such other agency or agencies having jurisdiction. This District is not representing that it's facilities will be extended or otherwise modified to make such service available lo the applicant. It is the responsibility of the applicant to make any required extension of facilities to serve their property. I hereby cerlify that the above ·water purveyor information is true. This certification shall be valid for one year from !late of signature. SOOS CREEK WATER & SEWER DISTRJCT Agency Name Supervisor, Development Administration ~ Title Soos Cr,tkWatcr & Sewer District "rptAvailSingkPartclA.ddWatcr" 2/6196 ~ ... ... >< r- ,:r·. .Wv , ... ,..,,,,~,-.. , ~ '"' fl.f")~·i' HUl.5 70 t=..I;_. ---c-cc-_ 140 1\ tooO 3 ,... ol · ~ o'i:l' -. " "'I jl. ' ~ • <!. 0 ~- ~ ' " > ' ' ;:; ~ ' " > 0" ' ' . (__ t.i ~ ,,_r-~ l:i O "I 0 ... ' ..... 1re -Iv I • I"' S 1 4 u<~i /rm• .Gs i., 21 ~ : ~ ------2---~ '~;: < -" ,,,,;,fo. /<"'1 , ,I > [,\)111" I '< I " I " '> 16~ 4 95'./ -Z/0 I/ 1A Zf;J I/ }'""c.. --' 2 3o , 'hO' ' ,.,> •"W1 -lfo 1 1' 70' /2,;I I VI I ' " 1 ~ ' -2.oo 1 60 1 • ui ~ !lo' 170 1 , · ::>" ' '(~ ' 5 W I 1-'--- !. ~ ,,. ,OC -; :,o' -------~~ > ·.I ( 00 1 ' _,,... <! l -./W I . I/ 1-Jf., I ------------'-"A£ / ::J: < 30' """' ,Z,,~ ~ . I-<t >4-3 S 89° .S'i" 20·_.E / . ~-~ ll O !/ . 120 /$-08 ~;f,fi" ~ ~ ~ -· I /;;'111: 1,1-4 6 l /:, <'> if,.,. ; _ I , .~ I o"' I .. {7re:,,,, \ (1 B'G VO J /Fbf' , , .,.v 1-:-' (J' ,, J ~-/~O I) I "!_Q ___ ---. .L..- . 1 ·1 (~ ~ 1 Ys .~.-cocaa~-~' I • tl I 19"S.06 ~ "' ~ LOT 4 ~ " " 't "'• ~- ' o•; ,'' , ~ ,o i ~ •" ,,. I~ ~&C,I~ -~J • _ _. .l ~I'.):: EXT. J ~ '-i-_.,, SVC. " A' l j -t_OtJ , 0 12-SO I 5= 4 o 0 v f'JO· 5 S DI _·_1 ,.~,. -~ ·~j; !-. 'q,j'·, fl/; ~ f?~ • ' < ',/Q\...· A1-gO 1:,19900 ; ,,q.; 2. J.9 q (' ;· 0 .s I \ f l · ' ,!/Ac . ----~. -7· I~\ *B'FtG~iflUEfO:~ ··-~ ~ "' " .. __ --· Q'\ I 1~ i~ ri,:,_i::-~ _ t-.. H)'D; "16: RUN_C.I. /0 1 ~;i i5~_:··.~ B,4 H,.., J.TEE /I [\f ~,'.;i t -· 1 e "' ~ /, ~,{ ); .. ~ t'G<;ROSS ' POWER~-POLE. iJ" 1, s' ~ "',, a DE..TlU L ,~~. 0~ , ,. -(l. ' i.s.:, ..30._ •. s----' a~ STA .. 8+4+.5 . / -'-' ~el'l5 ~I O e· ,,o~ '~I: l~..1~1- 00, ,u B' •' " ___--, -<l> ,._ ' ,0' \ 0-. J' /-d S' ,> ' I ,r..__.ffe';lti,w,>I.. 0. -.0 a'" "158 ,0 e, ,79.SB -------11:l!i>.!9<:.0E .. t 7' J £5 '· -----I £ AUGtJ.~E-1 J/ .s. ,var•,,·s--1-, __ ___L,C. rUMl!'i'.~./ ... \ I ---,--~W-O"'"m=E.D a;AG ;:;,c EX .... ~. 4'•"""' --- --;-----1 Yp_\--. --· - ------------· - " e,,31.~ ..a.yv£_"TLANO __ ,s. 1/Z. cl t .... \ This certificate provides information necessary to evaluate development proposals. Certificate: 4367 s~~;i:~! ~ ~~~~:!~!i~~:;;l~lf @p 'l ~l [t ln1 Type: Preliminary Plat or PUD Sfp 1 6 200~ @ Applicant's Name: Rick Boston f( C. D .D.t.s Proposed Use: 38 Single Family Residences Location: Lot: 11 Block: Development: NORTHWESTERN GARDEN TRACTS 5 Parcel: 619900 0220 Address: 12208 SE 192ND ST, RENTON Information: I11cludes parcels 619900 0240 and 0260. See attached proposed layout. SE,VER PURVEYOR INFORIVIATION J. • D Sewer service will be provided by service connection only to an existing sewer main Null feet from the site and the sewer system has the capacity to serve the proposed area. 2. 3. b [,2] Other (describe): • GZJ b D • !iZl b Cl The proposed plat will require the installation of approximately 3,020 If of sanitary sewer main. All plans must be approved by King County, KCWTD. and Soos Creek Water and Sewer District. The sewer system is in conformance with a Cmmty approved sewer comprehensive plan . The sewer system improveme11t will require a sewer comprehensive plan amendment. The proposed project is within the corporate limits of the district, or has been granted Boundary Review Board approval for extension of service outside the district or city. Annexation or Boundary Review Board approval will be necessary to provide service. 4. Service is subject to the following: a 0 Com1ection Charge: Yes b l;,J Easement (s): c i;zJ Other: Onsite and offsite. Existing BP A easement in construction area. May require wetland/sensitive area, BPA and grading pemuts. Service is subject to the applicants agreement to comply and perform to make such installation and/or connections to the standards, regulations, requirements and conditions of this District and such other agency or agencies having jurisdiction. This District is not representing that it's facilities will be extended or otherwise modified to make such service available to the applicant. It is the responsibility of the applicant to make any required extension of facilities to serve their property. I hereby certify that the above sewer purveyor information is true. This certification shall be valid fur one year from date of signature. SOOS CREEK WATER & SEWER DISTRICT Alice Marshall 4/6/200'f ---~-------------·---·- Agency Name ~~ '"" .. " . . ~ '-ff~[ {.Du'-/ Signature .-Date Supervisor, Development Administration Title ,\ I ~- ' ?: - ~ \) \) )] r .1.-;,i ,S C lu 0 JO ,, ' I} 1/1,, -,,, 0""'¢i.., -,_ ,, " I~ w N "' w l 0 ··f' " " 0 • , • ~;:ii: o, Jo 'o r-4. .,., t-,:,,-.....N........_ ~ ~ ~ t~ .................... \ ~ \ \ '· \. Date To From Subject Project Subdivision # Permit# Owner Location Lots Seasitive Areas: SCS Soll Clas&.: Zoning Size Purpose Geo Trends, Inc. Mar. 10, 2004 Rick Boston Boston Design & Development, LLC 13425 E. Lake Kathleen Dr. SE Renton, WA 98059 Steve Pappajohn, Geologist /oJ Geotech Report 1 / < ::~ /;] ;; Soos Creek Plat IJ)J ·~ '~. ~· ··-, AA03P0186 SE;o f fi L5;7) N.A. 2004 .__L}) Boston Design & Development, LLC K. c SE SW Sec. 33, Twp. 23N, Rng. SE, WM (see attached map) . D. D. f:. S. 1-31 (see attached plat) Erosion Hazard (King County Map Folio, Dec. 1990-(see attached llll\P} Alderwood (AgD) -SCS King Co., Nov. 1973 (see attached map) King County R6 6.l acreL The purpose of this report is to characterize certain geotechnical aspects of the above-captioned property especially in respect to slopes stability and soil permeability. An erosion hazard is indicated as possible based on the available reference. Summary A site visit was made to the property and the adjoining properties on December 30, 2003. The purpose of the visit was to inspect the natural and existing conditions of the property and to make observations regarding soil profiles, ground water conductivity, slope stability and other salient factors the location and suitability of building sites. Existing topographical information was also used in the charactemation. Research and interviews were conducted to establish the history of the property, to gather important information about previous activity on the property, and to determine the details of all salient aspects of the property that may effect its development. Preliminary site plans were also reviewed. From surface conditions, local geology, and observations from adjacent developed and undeveloped areas, koil conditiom appear to be consistent with mapped records. Characteristic Alderwood soil associations consisting of wooded up land terraces and slopes, composed of glacial material, are laterally continuous and consistent. Slope measurements confirm terraces of less than 6% grade to slopes areas of up to 28% grade. All areas contained characteristic stable surface conditions with no evidence of sliding, mass wasting, or creep. (see attached topo map) No evidence of water -bearing or --ilirecting horizons (springs) was observed at the surface or along the slope. Characteristic Douglas fir-Alder forest, with typical fern and scrub understory prevails on and adjacent to the parcel. The Soos Creek drainage is to the east of the eastern boundary of the property. Geology Vashon glacial till deposits and post-glacial stratified terrace drift dominate surface geology at the site. Soils in this region consist mostly of well-sorted sandy and gravelly loam above a substratum of compacted till designated as Alderwood Soils in this portion of King County. In the Puget Sound region, deposits of this type are thought to have occurred at, and proximal to, the retreating front of the Puget glacial lobe by large ice-marginal melt-water streams during the most recent ice-age. L04POOOJ-- '. ' Geo Trenas, Inc. Infiltration Tests Three (3) test pies (Nos. 1, 2, &3) -., ehosen. far far water intiltratioo tests tv dlltermine the pe1mealll1ity charactaislial on the east side of the proposed development in the arm where retelllion / infiltndion filc:ilitics wauJd go. The pits varied in depth Imm 3.5' to 9.0 fect deep and -eadl li(IPlviiiD t,ly 24" wide (seepholas). The soils wa-i, wel) drained and similar in a0 pits, -soil profile. Teals were rond!ected on Decemk 30 2003 and on Man:b 3 2004 to lll'AXIIIIIJIISS the rainy VfiOII The pits were left Clpllll and obserYatiom during January and Februry showed no s111iding Wlllc£. Conditions during the tllStS wece cold 1111d wry wet wilh the soils in general well sauatod due to pic:w' weeks of heavy rain (and -in December) up to the day oftest Tes1S were cooducted per Kin& Coudy Falling Head Pemllalion Test procedure. Test holes were dug to the probable deplh of infiltration fiu:ililies to be designed. Due to sandy SOJ1 with minimal clay, and the wet conditiom. a pn,-soak was not done but multiple ksts vuifiCJd a wusistant result. They-tested o...-anapprounatDly 90 mimle period, stllting wilh a ..._. deplh 8" from the bottom of the pit and refilled as reqwred (typic:ally aftcr a 3 to 4 inch drop). Pen:olation rate noled as fullows was after a stabt"Ji:ml consistant lllle occured. Falling Head Percolation Test Results {minutes/inch) Pit L1-tiM Dq,tll. s.r&c:e Boao• Idllratioa Rm ElentiH Elmatioa #I Center, 260' west of 4.0fect 406 402 10.0 min/ mcb east line #2 SHcuna-, 17S'west 3.S fect 386 382.S 7.1 min/ inch of eat line 13 Oder, 130 feet west 9.S feet 386 376.5 8.0min/inch of east line a 8.4 min/ inch · The water table elevation in tbis low area of the site appears to be approximately 373 ehmdion. This was 1-1 oo obscnation of sevem pits over the 2 lllOlllh wet period: 114 (occatioall short dundioo water at elev 373}. IS (m wakr aD season atelev 374}. and 17 (Slllnding water Ill 372.S), and noting that the wetland delineation line lits at approximately the 374 elcvatiOll line. Geo Trenas,1nc. Lalldslide and Steep Slopes Alllllmi The site was reviewed flll" steep slopes via on site visual impection and analysis of the topographic ll1:J1llouts (at 2' n:rements) mapped by Et,agrcen Pra:ision Surveying. This site has an overall slq,e west to east of 16.3% (100'/612'). The western edge upper plateau at e1evalion 476 is about 4% (4'n00'). lhe makm edp lowcrvalley flat-is 7.3% (10'/ISO'), and a bench in lhe middle at elcvatioo 440-430 is roughly a S% (3'/(i()') slope. The two inclined-._ and below the bench ant roughly 20 1D 25 % slope thus nquidug cco-sidaatium fcr landslide Landslido-is dcfincd 11!1 an:u ovar 15'%, COOiptised of silt or clay soils intcrbcdlld with sand, and the Jll es:nce of gtoUlld. Wllflr. Test pil:s rewaled that sot1s Clll slopes wae twenty br to thirty-six inches of Slllldy loam over a~ glacial till No indication of slides were noted anywhere on the site. It is recommended dllt aood fi,,u-J•lioo p....tius be illlowed by b:aliog roi•inJp on this solid base. Also subsurface waters ftom the upper pfetw1 b'awl lhru the sciJ at the glacial till lewl. thus it a recommended dllt Ibis~ war be captured at lhe top of lhesim (western edge) such that oflsite drainage (which flows ooto the site) can be routed to bypass this site. W'tth these recommendations implemened, there is no likelihood of lands rides. "Stl:ql slapes'", clefidfld u inclines oWr 40% Wilh a rise over 10-. an, idllllltificd and shown on the. topognlphic map. Nola shaded -A, B, C, & D, dlese npresem sJeq, slope areas; note that dJeSe range between 10 and 20 feet in tolal rise. Note also that these are oot JIIIIUral but were ca ewled by man made C\lts (likely made in the 1970s or 1980s'lo lCYel the lower valley and lhe centa' bench fur homes andyardarea). Code allows fcr an exemption from setbacb if IOJ1s are stable 1111d rise llllda' 20 filllt Wl'tically. Tiws a careful review of the aeolo&Y telatcd to scability was made. As per the soils partion of Ibis nport the underlying glacial 1111 is wry stable and well drained in these pmticular arews. Review was made of hlrrain. vqp'hllion, and size ud sbaigbtness of lhe b'ee8; no slide evidence edsts. Noto also thwt these slopes ani IIIIIQlinally classified as "sleep". Measmemct.it with the incJine..Dllller indicallld less than 36% grade, only detail 8D8lysis of the topowapbic:al map u•fit:ateJ same selei:t areu arejmt barely 40% owr 10 mol rise (IIOIIII staqMr). TII-. die 110acl •• is dlllt • atlwwae a&d will-by-ptiac tllese -frem eetllaek Rflldremn111 if reqahed. . '. This c:oaclusian is fi!rther strmgtbcned by considering the pwpased site plwn (Jot layout) and CDRdructiou p1w as sblted by·the developer. Per code,~ is permitted if these slq,es wen finned due to man made grading. they were. •In lllW A and C lhe slape rise is 12 to 14 fi,d, with slight m-.,adjng this wiD be reduced to "nDu steep s.lapc"; it is ooted 1hat 1he site plan ()at layout) is dt si1vied fur daylight b e mt home! c:onfigured filr this. •Area Bis 1lOt in ibelf"sleep slape" fit is 20%) but when coupled with the slope cut of area A it becomes so and generates a riso of 20 feet. When this lower aRa A is -gnided (likely by re fiffinB the old C!Xeamtian) thus bringing the A + B OYl'Oll slope to 32% it Is no longer a "sleep slope" classi.flcation. •Area D southern end slope rise is 16 feet. This is planned to be mained as "steep slope" and the ~ for IIO setbwck should be applied here. At the JICitdltffl end the rise is 12 feet. This_ is 1D be re-graded aligbdy and to pro\lide fcr Ibo proposed roadway, thus eliminating 1he "steep slope" classification in this area. ·"" Geo Trends, lilc. References Geologic Map of the Renton Quad, King County, Washingtoo, 1965, US Geologic Survey Soil Survey, King County Area, Washington, 1'173, US Dept of A¥,., Soil Cooserwtion.Service Engineering Geology iB Wasbington, 1989, Washingto& Depa.tment ofNatural Resooroes Bull. 78 Water Resouu.:m of King County, W~ 1961, CJeo1o8icaJ Survey Water Supply Paper I 852 King County Sensitive Areas Ordinance96J4, KingConnty, Washington,. September 1990 Disclaimer This report eoolains infCli matioa tflat is illkaded solely to c:harai:laize the geologic coaditions and other aspects of the subject property and is for use only by qualified geoteclmical professionals and regidaklry officials. Ally adia' use Ill" tdimlce is to be ~ a misuse. The flieis, findings. opinion.,, judgments and com:lusims contained isl this nport an: pt ,Im Clll a "tlest-effia IS" basis, based on the best information available as observed in the field, as oblained through gmaally ac;cepted professional practices. and as reviewed by other qualified pa9UDDel wi1h the epprnpriate regu}aklry agcn~ies. Due to the nature of geologic investigmm and the pi•edial e,lirt rce of uotnowu., unbowabJe, cooi:eaJed oc otba-wise unrq>orted conditions or fads in;. en. or umlcr the suiijeet prop.al)', ow«fjtiuas other drm: those n:po,ted herein may, io fiict, aist. In ad•lieioo, modi&atiw of thc r;.ming site may r:KpOSC or =:ate uufm en condiliODS and hazards tlvtt are beyond die scope of this report. No~ of any kind, either expressed or implied, is included herein. Sincerely, -~~; _., --·.-:.. :-,;., ~ ,.. . ~ · .... ··• ' ' •• "I,.. ' . ' / 18!!1 .. ~ '•llf!l~i,: •r.., "' :trs ~!l_ !llln1t11 ~ , ~-.,, ' lff_ .. 11§:Jff_~Y.,_;ii! s '--~!! .. , ., ' • MAP ,111 '2f i-- Ill -~-,.,~ " . :!#: KINS. CO. i I ( CJ) ,~ l -t"i -' -.,. ~,..,, 4d --h.. -43111--+- 4 ,- ~ ---+--- 4134 32 \.l.,) i\J 1----n 26 !-_:.., ,r' --i 7'""\ '._,} Ci) ~ I ~ ... 4 ;,IA _......---t.-. 442 4~0 4~ 15J--+ 41 41:c!--+ II I .L -41n-"" 404 ,P n·· m z uJ w .... I ..; Ul I n\ \ Ul \ 0 ::J . I \ I \ I \ • ·········•················ JJQUSE ···············---········ ...... -.................. . :;: c:; <:: t,; t.; ·--············· A._<?rp, C. ~R~A .'is ~ -ft:-~ < 'o .,~ ~~ ;ARTE!>-. D ~ A'REA A,-· ,/,,-f71 r,,ok.TH-\ µ ,,, /L~t(.§ .. -- , / ,~ " \ .-o / ?>() / N1 •03·•18''E 88.00 • \ s.Yol 6'. \ "'=lt-~ / ?,00/ /// ('386 01 --If\) \ o,, ~ b , "<?o N1 ·03 '.18"E 100 00' \ 'C'.J' ~ • !>i \ ..5o <::>.-S CR EE l<. p L ------- 1 ·_;,e.,. m ui ~ o'6' -4s2._::~~ --.,so, :ti~ 44a~ :i,; 445~~~~ ~ / ~ <14<1 !:llt:;b---·--:::--'"~o~ ------- 392 ----~~ 440---._ ___ ~ !ij~----438~--~ ~~436- -b~434 -----.._________432 ----...,30,---::--,-, --- 428 ·=--------· ~' 402 404~~~~ -~400 ~~ ~~~~~~~-398 396 ' 394~~-;,__-~~ --390 388 3aa 386 386~~~~~- ___,,. ~~~~~~------~-384------------- 38/ -~ -I ---~ 382 --- !£' <0'. ct., l\l'. CJ?' m, ::'2" f\)' ~" .'.... 3a ~ \l-OC""'Tio f..J c::,~ STEEP s~·--·--··;;,···------1 / ..... L ..... 1 ~ ~ \ ( >'fa 7~ F<>('{ ';f{.tj' R ISE) i ~ ] "'i ~ () •, : .... ,Q ~ : ~ \ ,, / : I:"! : \ .S:C A(. 'E I ..::..S-C> ~ .................... . .3'<>?, Ol ,,; I\) ni --~-----::::::----~ ---aa --------- --_3sO--o- 3731-1-- ~~· / . .. ...... _ . ( . p,z,:"£:IS10,-J SU I< U f''(,...i(j- ~ 8 / , j~ 2-oo'-/ 382 .. ~.aao~ .. -.. -. ~so_:.:.;:.--I-. - ~ 378------------?,1'¢ 31'o ?,10 375 376. "'I-~-----:--378--------------- 3 7 8-----c., -\67 _r;p' c::, z• AO"'II l'\\':l ·'2 ··~4,W: N1 °03 '18 ''E .176 .67' _,,.---,--------l> ..--<'~ ~ --------'1/1\s~ ::. '111\'f w ,s~ 3~· -ru rn 6- 01 E;osion Hazard Areas Kent 5 WT .. ·!" ~ ""-' L~·,,: = ~ ;·-~! .... : i c."~ ·, . · ,t,e.,, ,C•: • • • S,h l I ......... ',""'i i :-I ·.,, ___ __, • ••h ••· , • :-1 . -: ·::: ••••• : :.1· ..-. .. . -==· ... . . . : . IM-- l l 2 J L1A K 3! I / fJ, ffi/ e, 47'20'-\ -" -1>.t':,... Tahlequah , / , R. 2 E. 1;:J?c~-I 1-~ R. 3 E. SOIL ASSOCIATION SOIL ASSOCIATIONS Soos Creek Plat R. 4 E. N l 6Miles 11111 1111 Alderwood association: Moderately well drained, undulating to hilly soils .........__ Soos that have dense, very slowly permeable glacial till at a depth of 20 to 40 ......,._Creek inches; on uplands and terraces . Oridia-Seattle-Woodinville association: Somewhat poorly drnined and very poorly drained, nearly level soils; in major stream valleys Buckley-Alderwood. asso~ialion: Poorly drained and moderately well drained, "','?".~/;~/~(;0~'?;"'·• nea,ly level to rolling .soil~ that have densebslowly. pecmeable and .verY. ,M J!i;. slowly permeable glacial t,11 at a depth of 2 to 40 inches; on glacial till plains and uplands ~ Everett association: Somewhat excessively drained, g1avelly, gently un- ~ dulaling soils underlain by sand and gravel; on terraces Beausile·,l\lderwood associaliqn: Well drained and moderately weltlfl'Jlined, gently rolling to vecy steep soils that have sandswne or sha e or d!!iilre, very slowly permealile glacial till at a depth of 20 to 40 inches; on uplands Alderwood-Kitsap 0 lndianola association: Moderately well drained, nearly r;;-i level to steep soils that have ver~ slowly permeable glacial till or glacial ~ Jake deposits at a depth of 16 to 40 inches, and somewhat excessively dcained, rolling, deep sandy soils; on uplands and terraces - Puget-Earlmont-Snohomish ass.ociation: Poorly drained aod somewhat poorly drained nearly level soilS.that have layers of peat within a few feet of the surface; in major stream valleys 4; AgC \·~. iJ~ l\gB <>, =;;. LOCATION OF SOIL TEST TS I I '" 0 / .. . ' , & -----. __ ~.;. I ·eaoaamc. ........ ; • a =~-' -,E,;.&r- .. .. .. KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL REFERENCE 6-A FALLING HEAD PERCOLATION TEST PROCEDURE Soun:e: EPA. On.site Wastewater Treaunent and Disposal Systems, 1980. Number and Location of Tests A minimum of three tcst.s shall be performed within the area proposed for an absorption system. They shall be spaced unifonnly throughout the area. If soil conditions are highly variable, more · tests may be required. Preparation or Test Bole The diameter of each test hole is 6 inches, dug or bored to the proposed depths of the absorption systems or to the most limiting soil horizon. To expose a natural soil surface, ·the sides of the hole· are scratched with a sharp pointed instiament and the loose material is removed from the botrom of the test hole. Two inches of~ to *·inch rock me pJaced in the hole to protect the bottom from scouring when the water is addoo. Soaking Period TI)e. hole is carefully filled with at least 12 inches of clear water. The depth of water should be maintained for at 1~ 4 hours and preferably overnight if clay soils are present A funnel with an attached hose or similar device may be used to prevent water from washing down the sides of the hole. Automatic siphons or float valves may be employed to automatically maintain the water level during the soaking period. 1t is extremely important that the soil be allowed to soak for a suff'tcientiy long period of time to allow the soil to swell if accW1lte fCSlllts are to be otitained. In sandy soils with little or no clay, soaking is not necessary. If, after filling the hole twice with 12 inches of water, the water seeps complelely away in less than cen minutes, the test can proceed immediately. i998 Surlaco Walu Deiign Manual 1 91 KING COUNTY. WASHINGTON, SURFACE WA.TER DESIGN MANUAL ----------------------------·~--- Measurement of the Percolation Rate Except for sandy soils, percolation rate measurements are made 15 hours but no mme than 30 hours after the soaking period began Any soil that sloughed in to the bole during the soaking period is removed and the water level is adjusted to 6 inches above the gravel (or S inctieS above the bottom of the hole). At no time during the test is the water level allowed to rise more than 6 inches above the gravel. Immediately after adjustment, the water level is measum:l from a fixed reference point to the nearest 1116°" inch at 30-minute i~als. The test is continued until two successive water level drops do not vary by more than Ul6 inch within a 90-minute period. After each measurement, the water level is readjusted to the 6-inch level. The last water level drop is used IO calculate the percolation rate. In sandy soils or soils in which the first 6-inch of water added after the soaking period seep away in less than 30 minufllS. water level measurements are made at llHrri1111te intervals for a I-hour period. The last water level drop is used to. calculate the pen:olation rate. · Calculation or the Percolation Rate - The percolation rate is calculated foe each ti,st hole by dividing the time interval used between meastmmlelltS by the magnitude of the last water level drop. This calculation teSUlts in a percolation rate in tenns ofminucesl'lllCh-To detemline the percolation !ale for the area, the~ obtained from each hole are aw:c wcf (If tests in the area vary by more than 20 mimltes/inch, variations in soil type are indicated. Under !bese circumstances, percolation rates should not be averaged.) Ex~le:. lf the last measured drop in water level after 30 minutes is 518-inch, then: 1 ~ "l Percolation rate "' (30 minutes)/(5/8 inch) "' 48 minutesfmch. 911198 2 1998 ~ Wat"' V...lgn Manual Top: Pit 2-Preparing for infiltration test Bottom: Pit 2 -Sandy loam, roots and cobbles ..... rll ~ ..... = ..... 0 = . ,.. ..... ..... 0 = ..... -rll ...... = a 0 = ..... ..... ... = -OJ) ~ M -~ ~ I ..... = ff') ~ ..... ... I Q..i •• ff') ..... ..... ..= .... OJ) ~ ; ·•• ¢: ~ ~ Pit 8 -Sandy Loam with pebbles and roots Top: Near Pit 8 -Natural Slope looking NlOW Bottom: Near Pit 8 -Existing Terrace looking S10E Left: Pit 9 -Large boulder from till at base of pit Right: Pit 9 -Water enters from west at loam/till contact = ...,_ ~ .... ..... =.. .... •• ~ ..... ..= Of) ~ Top: Pit 12 -Note sandy loam from pit-Pit 6.5' deep Bottom: Just east of Pit 12 -26°/o grade looking north \ \ \-~ ' ~\ \, l" WETLAND "IJ' /3--1998;: FEET 34 ,.,., 35 ,,,.. 36 ,.,... 27 .,,,, 28 ""' \ / A17 \ \ \,16 \ \ \ 999 \'.··. \,,5 I \ \ \ -i- i _j D2 " 25 !f,/J31 ,..,, ---=-==-=c=:..::::.-. ----,--24 -, 4,1118 I, 23 ..,,, ~;''; ,•' , , 21 I I' ~· ..,,. 2() 4,211) 19 ,.,,.. ~p~~~ I L l..f1 1--- i/ ·, I ; __ • I -.. I I r• I I ---1 I I I I I I I ,,,1,.,'i-{" I I I I I I I I i I .,, , , ,. I ---~-_ _J.__ _ ---------+- ~ ~ LOT LAYOUT PLAN ICt:Wi ,. 19' t,.\'""("'S - 11 ' ,..,. : 15 1,JO, 16 U.,U )~\i.\,;'\JI 33 4,216 32 ..,,. ,_ (' 1· --' -~~·,·I I•··.~ I \~ ·r . "I 43 'I JA, ' ~,,~· HY'"' :~ .-· . . '~ • S.E 19-ZND ST ----- • EB I I 11 -----H I \. 1 ~1 r I I I! HOPA ': I ,. I \ \ \ 37 4.110 38 - I I I I \ 11 I I 11 I It' I I ti I \ 1' \ ,, \ 1' \ 997-REC. ._ I ,, ,, J. I~: 1\ ~I "-"•)t·::F \ I ~----~._,,, • __ .....1.r~c,~"i-.-,_r-" , "---, N ' 2 ,.,,. _J ;··'.£\."•"/-;',(' ', -t':'J 1" GRAPHIC SCALE ~ .I • • I i,.i---· ·-----c•••n I illdl • 40 II. I\\ 1,,4 I '.\ \ \ )\ \:13 \ SP~I i \&:: \\' \ : '\ \ I: \ \ ' \ \ \ 'i-SP4 ' \\ : .:·.: A12 ' \ \ I \ \ \ \ A11 I , \ \ \ \ ' ', \ A10 \i'·, \ \ \ ' \ \ \I I '7 \I AB "1 \ 'v \ (l} 0 i '1 f (<I -' '.)) I \ ~ s. \ \ AA2/ !..\ .,,,,,i/• I \ , ' ' rt• . , ,: ,(J,o!!' !>!1 \ \\5 \\ \ \ I \ AAI I\ ' : ~,\sb.'. A4 , ' ', \ \ ' \ \ >.' i~ .. ~\' / ' ' A2 \ _L-S/24-----,;_:i ---~2,(•! \\ SP1 :.,--rr ' ' ' __ \_ T 1111 Ta,lor Ea9ln111in9 Ceanltanta 205 Fn111t Sl S. P.O. Bo• 1787 1911G41Cft, WA 98027 tel 425-]91-1•15 ta• •'2S-391-1 ~1 Projttt: SOOSCfEEK PLAT D,,,eiopr, ·--..... °"""' Spoetll 111,)9..._,._NE SMtlll. ._ 98115 Job D<lt4! TCC.bl> ~ W=iDA -"" ..,m ae -... uu Authorlz~ Utt: /Ml ..,,, JI ,._, l,r - .,, .. l11Jltllf'/lt:l"""lt 1/dllOIM,,..lllr""r olw,W,-llillwt .. ...-~-~ ~by1ll! Permit Agene~ "" """' (D 1-·~I ® r~ (~L~._ 1 ? "., " _ . :::; 9/15/M '--' I' ,..., c--' I I : , ---'-....../ ~ I : 11 . I ':J,lf°'=""'1c---°'""~'!_• -1 -C ' ~,IJ-i4-11---- SE? 1 6 .,, ... , fr1,,'\.I"; K.C. D.D E.s (/vJ(~W- L04 GAi i S!fP'IE )p!IQD 1 -800-424-5555 f"Cft flB.O UXATION Of UNDfRGffOLND UTIUTIES Sheet Title.· Pll3..MNARY LOT LAYOUT Sheet No: 2 Sheet at "!: & if. -Ot~ onsulting WETLAND EVALUATION AND DELINEATION REPORT SOOS CREEK PLAT PROJECT SITE King County, Washington Section 33, Township 23 North, Range 5 East, W.M. prepared for Boston Design and Development 13425 E. Lk. Kathleen Or. SE Renton, WA 98059 prepared by H & S Consulting P. 0. Box 731695 Puyallup, WA 98373 253 732-6515 mheckert@qwest.net May 26, 2004 • I P. 0. Box 731695 • Puyallup WA 98373 1c 0~ 1=' , C:: .-~;:' ~." ·. ~ .-. cc . .. --, I I I l:= .C --· -~· Jj JU SEP 1 6 2004 __ , K.C o.o.E.S (253) 732-6515 mheckert@qwest.net (360) 893-6779 EXECUTIVE SUMMARY The Soos Creek Plat Project Site is approximately 7.26 acres in total size and located to the east of the City of Renton, King County, Washington. The project site is comprised of three parcels; ( Parcel # 6199000220, 6199000240, 6199000260). The project site is dominated by mature and sub-mature forest, with single-family residences, managed and maintained lawns, and unmanaged portions. Onsite assessment of the project site following the procedures outlined in the Washington State Wetlands Identification and Delineation Manual (Wash. Manual) and the Corps of Engineers Wetlands Delineation Manual (1987 Manual) resulted in the identification of two areas that exhibited hydric soils, wetland hydrology, and hydrophytic vegetation consistent with the established criteria of both the Wash. and 1987 Manuals. This assessment, completed in accordance with King County regulations, included an evaluation of the function and value rating for the identified wetlands, a classification of the wetland following the U.S. Fish and Wildlife methods, and an identification of the standard King County buffer width required for these wetlands. WETLAND SIZE CLASSIFICATION KING FUNCTION STANDARD ONSITE (USFWS) COUNTY AND VALUE BUFFER WIDTH (square RATING RATING feet) A Offsite -PFOE 1 High 100 ft. Buffer onsite B *998 PSSC 3 non-Low Not regulated rei:iulated *connotes wetland continues off-site PFOE palustrine, emergent, seasonally flooded PSSC palustrine, shrub-scrub, seasonally flooded/saturated The U.S. Army Corps of Engineers and King County, as well as a number of other local, state, and federal agencies, regulate activities in and around identified wetland and drainage corridor areas. Such regulations focus on the avoidance of adverse impacts to wetlands, streams, associated buffers and the mitigation of such impacts that cannot be avoided. King County has established criteria to categorize wetlands for purposes of regulation and the establishment of buffers. In addition, King County allows a limited amount of alterations to wetlands (i.e. isolated wetlands, roadway crossings) provided such impacts are mitigated pursuant to an approved mitigation plan. The Selected Action Plan of the Soos Creek Plat project site focuses on the creation of independent lots suitable for the development of single-family homesites consistent with the King County Comprehensive Plan. • • 11 TABLE OF CONTENTS INTRODUCTION ............................................................................................................. 1 STUDY PURPOSE ......................................................................................................... 1 SITE DESCRIPTION ..................................................................................................... 1 BACKGROUND INFORMATION ................................................................................ 2 NATIONAL WETLAND INVENTORY MAPPING .................................................... 2 STATE OF WASHINGTON PRIORITY HABITATS AND SPECIES ....................... 2 STATE OF WASHINGTON STREAM CATALOG ..................................................... 2 KING COUNTY SENSITIVE AREAS MAPPING ....................................................... 2 SOILS MAPPING .......................................................................................................... 2 ONSITE EVALUATION -WETLANDS ....................................................................... 3 WETLAND STUDY METHODS .................................................................................. 3 FIELD OBSERVATION ................................................................................................ 4 WETLAND AND STREAM DETERMINATION ........................................................ 6 WETLAND FUNCTION AND VALUE ASSESSMENT ............................................. 7 ONSITE WETLAND VALUATION ............................................................................. 8 REGULATORY CONSIDERATION ................................................. ,. ........ ., ............... 10 U.S. ARMY CORPS OF ENGINEERS -SECTION 404 ............................................... 10 STATE OF WASHINGTON DEPARTMENT OF ECOLOGY .................................. 11 KING COUNTY -"ENVIRONMENTALLY SENSITIVE AREAS" ORDINANCE 2 lA.24 ...... 11 SELECTED ACTION PLAN ........................................................................................ 13 FIGURES .......................................................................................................................... 14 REFERENCE LIST ........................................................................................................ 15 .APPENDIX A ................................................................................................................... 16 ATTACHMENT 1 ........................................................................................................... 17 ' '.,. It I STANDARD OF CARE Prior to extensive site planning, this document should be reviewed and the wetland boundaries verified by the appropriate resource and permitting agencies. Wetland boundaries, wetland classifications, wetland ratings, and all proposed wetland restoration and enhancement activities must be reviewed and approved by King County and potentially other regulatory staff. The above consultants have . provided professional servtces that are in accordance with the degree of care and skill generally accepted in the nature of the work accomplished. No other warranties are expressed or implied. The consultant is not responsible for design costs incurred before this document is approved by the appropriate resource and permitting agencies. Mark Heckert H & S Consulting • l \/ INTRODUCTION This _report details the culmination of activities and onsite evaluations undertaken to complete both a wetlands evaluation and a wildlife habitats assessment as an element of the planning and site development of the Soos Creek Plat Project Site. The project area is approximately 7.26 acres in total size and generally located within a quickly urbanizing area east of the City of Renton, King County, Washington (Figure 1). The evaluation and delineation of onsite and adjacent wetlands and drainage corridors is a vital element in the planning and selection of a site development action. The goal of this approach is to assure that planned site platting does not result in adverse environmental impacts to such areas. Wetlands are generally defined as "those areas of King County that are inundated or saturated by ground or surface water at a frequency and duration sufficient to support, and that under normal circumstances do support, a prevalence of vegetation typically adapted for life in saturated soil conditions." (King County Environmentally Sensitive Areas). STUDY PURPOSE This purpose of this document is to present the results of the onsite assessment and evaluation of the wetland/drainage corridor areas and the wildlife habitats within the project area. Included within this report is an assessment of the proposed impacts and compensatory actions to be taken to ensure that proposed onsite actions do not adversely impact environmentally sensitive areas. This study was designed to accommodate site planning and potential regulatory actions. This report is suitable for submittal to federal, state, and local authorities for wetland boundary verification and permitting actions. SITE DESCRIPTION The project site is comprised of three parcels; ( Parcel # 6199000220, 6199000240, 6199000260). The project site is dominated by mature and sub-mature forest, with a single-family residence, managed and maintained lawns, and unmanaged portions. The forested portion of the site is dominated by a mixed forested plant community of mature Douglas fir (Pseudotsuga menziesil) and mature big leaf maple (Acer macrophyllum). The project site is generally sloping to the east. There is a constructed ditch along the northwestern boundary of the site, to convey surface water from an adjacent development east down the slope. There is no evidence onsite of a continuous stream channel other than the ditch. 031103 Boston 124'" Ave. SE-1 BACKGROUND INFORMATION NATIONAL WETLAND INVENTORY MAPPING The National Wetland Inventory (NWI) mapping completed by the U.S. Fish and Wildlife Service was reviewed as a part of this assessment. This mapping resource did not identify any wetlands on the project site. This resource identified a wetland immediately off-site to the east as palustrine, forested, seasonally flooded (PFOC) Palustrine, Scrub- Shrub, Seasonally Flooded (PSSC), and palustrine, emergent, seasonally flooded (PEMC) (Figure 2). STATE OF WASHINGTON PRIORITY HABITATS AND SPECIES The State of Washington Priority Habitats and Species (PHS) Mapping was reviewed as a part of this assessment. This mapping resource identified Big Soos Creek within the immediate vicinity. STATE OF WASHINGTON STREAM CATALOG The State of Washington Stream Catalog for Puget Sound was reviewed as a part of this assessment. This mapping resource did not identify any streams within the project site. Offsite, adjacent to the east, a stream corridor was identified as Big Soos Creek. This creek was identified to provide habitat for resident and anadromous fish species. KING COUNTY SENSITIVE AREAS MAPPING The King County Wetland Inventory was reviewed as a part of this assessment. This mapping resource did not identify any wetlands on the project site. This resource identified a wetland immediately off-site to the east as Map Folio Wetland 5402, Class 1 (C), 134 acres. This resource also identified Big Soos Creek transecting the wetland as a Class 2S stream. SOILS MAPPING A review of the mapping of soil types within the project area completed by the U.S. Soils Conservation Service (SCS) identified that the onsite soils consist primarily of Alderwood gravelly sandy loam (Soils Survey of King County Area Washington, Nov. 1973). This soil is described as: AgC -Alderwood gravelly sandy loam: This series consists of moderately well drained soils that have a weakly consolidated to strongly consolidated substratum at a depth of 24 to 40 inches. This soil is on uplands and formed in glacial deposits. A typical pedon of Alderwood soils from O -12 inches is dark brown (10YR 4/3) gravelly sandy loam. From 12 to 27 inches the soil is 031103 Boston 124"' Ave. SE -2 Wefland Report grayish-brown (2.5YR 5/2) gravelly sandy loam with many medium, distinct mottles. This soil series is not listed as a hydric soil. ONSITE EVALUATION -WETLANDS WETLAND STUDY METHODS Presently accepted wetland identification is based on a three parameter criteria test as established within both the Corps of Engineers Wetlands Delineation Manual (1987 Manual) and the Washington State Wetlands Identification and Delineation Manual (Wash. Manual). These criteria are: 1. A predominance of hydrophytic vegetation. 2. The presence of hydric soils, and · 0 3. The presence of wetland hydrology. Initial onsite assessment and evaluation was completed during several site visits in 2003 and 2004. Specific identification of wetland boundaries was completed on December 17, 2003. Assessment transects were established on a north/south pattern through the project area. Wetland assessment within the project site followed the methods and procedures outlined in both the Wash. Manual and the 1987 Manual. Onsite assessment noted that there were no differences in the identified wetland boundaries as a result to using either the Wash. Manual or the 1987 Manual. Drainage corridors were assessed and identified in accordance with the criteria established by King County and the State of Washington Department of Natural Resources (WDNR) Forest Practice Rules (WAC 222-16-030). The site characteristics were assessed on April 2, 2004 with King county staff (N. Gillen) to confirm wetland categorization and discuss mitigation options. The boundary between wetland and non-wetland areas was established by examining the transitional gradient between wetland criteria along transects through the site. Delineation was performed using the routine methodology for areas greater than five acres as detailed in the 1987 Manual. Field data sheets are provided in Appendix A. Identified boundaries were marked in the field with number flagging. These boundaries were then surveyed and made a part of the site plan mapping. 031103 Boston 124"' Ave. SE -3 Wetland Report FIELD OBSERVATION • Vegetation The dominant onsite species was Douglas fir and big leaf maple. These mature trees formed open stands across the treed portion of the site. Additional tree species occurring onsite included Western red cedar (Thuja p/icata), Western hemlock (Tsuga heterophy/la), red alder (A/nus rubra), black cottonwood (Popu/us trichocarpa), cherry (Prunus spp), and cascara (Rhamnus purshiana). The understory included a wide variety of shrubs and herb species including· vine maple (Acer circinatum), salal (Gaultheria shallon), Oregon grape (Berberis spp.), hazelnut (Cory/us comuta), salmonberry (Rubus spectabilis), Scot's broom (Cytisus scoparius), Himalayan blackberry (Rubus procera), evergreen blackberry (Rubus laciniatus), Pacific red elderberry (Sambusus racemosa), snowberry (Symphoricarpus a/bus), bracken fem (Pferidium aquilium), and sword fern (Po/ystichum munitum). Throughout the project site this plant community had been altered by prior·. management actions. This plant community was identified as non-hydrophytic (i.e. typical of non-wetlands). In the northwestern portion of the site, at the northwest corner, an isolated depression occurs. The plant community in this area is shrub~scrub, dominated by salmonberry, spiraea (Spiraea douglasi1), slough sedge (Carex obnupta), buttercup (Ranuncu/us repens), reed canarygrass (Phalaris arundinacea), softrush, and lady fern (Athyrium filix-femina), with alder (A/nus rubra) saplings occurring intermittently. . This plant association was identified as hydrophytic in character (i.e. typical of wetlands). Offsite to the east a large stream corridor occurs. The plant community in this area is shrub-scrub, dominated by red-osier dogwood (Camus stolonifera), spiraea (Spiraea doug/asi1), salmonberry, Sitka willow (Salix sitchensis), slough sedge (Carex obnupta), buttercup (Ranunculus repens), and willow-weed (Polygonum lapathifo/ium). . This plant association was identified as hydrophytic in character (i.e. typical of wetlands). • Soils As identified by numerous sample plots throughout the project site,. the majority of the site exhibited a soil profile typical of the Alderwood soil series. The soil WlJS defined as gravelly sandy loam with a soil matrix color of dark brown (10YR 3/3) to brown (10YR 4/4). These soils did not exhibit redoximorphic features such as prominent soil mottles, oxidized root channels, or glayed soil layers within the first 20 inches of soil depth. The majority of the project site exhibited soil which would not be considered "hydric." Representative sample plots are identified. (Special note -many more sample plots were completed during the field assessment than are reported within Appendix A). Sample plots within the defined isolated depression exhibited a mixed gravelly loam soil texture. These soils appeared to be mineral in character. Soils ranged in color from very dark brown (10YR 3/1) to dark grayish brown (10YR 4/2). Redoximorphic features 031103 Boston 124"' Ave. SE-4 Wetland Report were present and often very prominent. Soils within these areas exhibited "hydric" characteristics. • Hydrology Onsite hydrology appeared to be the result of seasonal stormwater runoff from onsite and adjacent properties. In addition, the pattern of surface water movement appeared to have been modified by prior land use activities. These activities have included the development of offsite homesites, the development of roadways and utilities, and the placement of culverts. The general movement of surface water runoff across the site was generally to the east. Surface water through the site was captured in boundary and roadside ditches which occur at the north and south boundaries of the site. Within the isolated depression, evidence of seasonal soil saturation was documented. This area was in a small depression, and had been impacted by prior land use actions (i.e. grazing, compaction, pasture management). Based on field indicators (i.e. water stained leaves, drift lines, soil saturation, oxidized root channels, wetland drainage pattern) this depression met the wetland hydrology criteria of the 1987 Manual and the Wash. Manual. This depression apparently drained to the ditch which flows east along the northern boundary of the site. Within the stream corridor area located offsite to the east of the site evidence of seasonal soil saturation was also documented. This area was part of a large wetland complex, and had been impacted by prior and on-going land use actions (i.e. utility corridor development). Based on field indicators (i.e. water stained leaves, drift lines, soil saturation, oxidized root channels, wetland drainage pattern) this depression met the wetland hydrology criteria of the 1987 Manual and the Wash. Manual. 031103 Boston 124"' Ave. SE -5 Wetland Report WETLAND AND STREAM DETERMINATION Wetland determination was based on sample plots which contained hydrophytic vegetation, hydric soils, and wetland hydrology in accordance with the 1987 Manual and the Wash. Manual. Based on these methods two wetland areas were identified onsite (Attachment 1). No area was identified onsite to exhibit characters typical of a "stream" (i.e. a continuous pattern of surface water movement, either permanent or intermittent). Also one ar~a, noted to have been intentionally created in an upland area, captured residential runoff. WETLAND SIZE CLASSIFICATION KING FUNCTION STANDARD ONSITE (USFWS) COUNTY AND VALUE BUFFER WIDTH (square RATING RATING feet) A Offsite -PFOE . •, 1 High 100 ft. Buffer onsite B '998 PSSC 3 non-Low Not regulated regulalEld *connotes wetland continues off-site PFOE palustrine, emergent, seasonally flooded PSSC palustrine, shrub-scrub, seasonally flooded/saturated Wetland A: This wetland was identified within a large wetland/stream complex off-site to the east of the project site. This wetland was dominated by a shrub -scrub plant community adjacent to the project site, and was forested further away from the site. This plant community was managed apparently to maintain the utility corridor access and maintenance road. This wetland exhibited shallow ponded surface water during the winter and early growing season as a result of topography. Wetland A was identified to meet the U.S. Fish and Wildlife Service (USFWS) criteria for classification as palustrine, shrub-scrub, seasonally flooded/saturated (PSSE). Based on the size of the wetland, association with a Class 2(S) stream, and the forested plant community this wetland complex was identified to meet the criteria for designation as a King County Class 1 Wetland. The standard buffer for a Class 1 Wetland is 100 ft. as measured perpendicular to the wetland edge. Wetland B: This wetland was identified within an isolated depression in the northwest corner of the project site. This wetland was dominated by a shrub-scrub plant community. This wetland was hydrologically supported by road and roof runoff conveyed by a ditch from an off-site single-family residence. This wetland exhibited shallow ponded surface water during the winter and early growing season as a result of topography and roof runoff. Wetland B was identified to meet the U.S. Fish and Wildlife Service (USFWS) criteria for classification as palustrine, scrub-shrub, seasonally flooded/saturated (PSSE). Based on the size of the wetland and the shrub-scrub plant community this wetland was 031103 Boston 124"' Ave. SE-6 Wetland Report identified to meet the criteria for designation as a King County Class 3 Wetland. However, since this wetland is smaller than 2,500 sq. ft. in total size, this wetland is apparently not regulated by King County. WETLAND FUNCTION AND VALUE ASSESSMENT Wetlands are known to perform significant roles in the ecosystem, some of which are of immediate value to society. These roles vary greatly with the size, type, hydrology, vegetation, and location of wetland areas. Although the ecological functions performed by this wetland are complex, interrelated, and difficult to assess and quantify, methods have been developed for the U.S. Army Corps of Engineers (Adamus et al. 1987: Reppert et al. 1979). The functions provided by wetlands include hydrologic support, shoreline protection, stormwater and floodwater storage, water quality, groundwater recharge, and provision of wildlife habitat. The HYDROLOGIC SUPPORT FUNCTION is defined by the measure of hydrologic stability and environmental integrity which the wetland provides. This function is measured by the frequency of inundation and saturation by tidal actions, stream flow, runoff, and precipitation. Wetlands permanently inundated or saturated, or intertidal wetlands are valued as high. Medium valued wetlands are seasonally flooded or are open water systems that remain saturated during most of the growing season. Wetlands that are intermittently flooded or hydrologically isolated are considered of low value. The SHORELINE PROTECTION FUNCTION is defined by the measure of shielding from wave action, erosion, or storm damage which a wetland provides. This function is measured by the location and width of the wetland along shoreline areas, types of vegetation present, and the extent of development along the shoreline. A high value is given to wetlands along a shoreline that have a width greater than 200 yards and dense woody vegetation. A medium value is given to a wetland with a width of 100 to 200 yards, sparse woody vegetation, and dense emergent vegetation. Wetlands less than 100 yards in width and emergent or lacking vegetation are considered of low value. The STORMWATER AND FLOODWATER STORAGE FUNCTION is defined by the ability of a wetland to store water and retard flow during periods of flood or storm discharge. Wetlands of larger size are generally considered to have greater ability to provide this function. In addition, wetlands nearer to urban or potentially develop-able areas are also considered to provide greater flood protections than wetlands which are in undeveloped areas. The WATER QUALITY FUNCTION is defined by the physical, biological, and chemical processes which wetlands provide to naturally purify water. This function removes organic and mineral particulates through natural filtration. In general, wetlands of greater size, more dense vegetation, and those which are 031103 Boston 124"' Ave. SE-7 Wettand Report close to point sources of pollution are considered to be of higher value. Wetlands which are small (<5 acres}, lacking dense vegetation, and not close to point or non-point sources of pollution are considered of low value. The GROUNDWATER RECHARGE FUNCTION is defined by the interaction of the underlying geology and soils, and the surface topography. This function provides for the movement of surface water into groundwater systems. Important to this function is wetland size, period of inundation, and depth of standing water within the wetland. High value is given to permanently inundated wetlands greater than 10 acres in size. Medium value is given to wetlands which are seasonally flooded and 5 to 10 acres is size. Wetlands less than 5 acres in size, isolated, and temporarily saturated are considered of low value. The NATURAL BIOLOGICAL FUNCTION is defined by the complexity of physical habitats and biological species within the wetland area. The value given to a wetland depends upon its ability to provide habitat for nesting (spawning), incubation, feeding, rearing, and cover of aquatic and terrestrial animal and fish species. In addition, the ability of a wetland to provide support for varying food chains is an important element in value assessment. Wetlands of high species diversity, three or more habitat types, unique habitat features, large in size, and associated with a permanent stream or tidal marsh are considered of high value. Wetlands with moderate species diversity, two habitat types, moderate in size, and associated with an intermittent stream or high salt marsh are considered of medium value. A low value is given to wetlands of low species diversity, small size, and isolated. These six functions are rated low, moderate, or high, based on the criteria outlined above. These criteria are guidelines compiled from Adamus (1987) and Reppert (1979) and professional judgment must be exercised in assessing these criteria. Overall values for a wetland are assigned, based on a synthesis of individual values. In addition to intrinsic functions, extrinsic functions are also recognized. These extrinsic functions provide social values that have indirect benefits to wetlands. Education and recreational opportunities are most often mentioned as extrinsic functions. Associated values are often subjective and are thus difficult to evaluate. As such, these functions are not rated, but are nonetheless important when considering creation, restoration, or enhancement projects. ONSITE AND OFFSITE WETLAND VALUATION Following the function and value assessment process noted above Wetland A (Located offsite) was rated as exhibiting a High rating: • Water Quality Benefits -This wetland was part of a large complex associated with Big Soos Creek. This complex had been impacted by prior and on-going utility corridor land management. This wetland appeared to retain more than 50% of the runoff which occurred within the local area. This 031103 Boston 124" Ave. SE-8 Wetland Report wetland also exhibited a wide vegetation diversity. The primary water quality benefit provided by This wetland was a significant amount of biofiltration of surface stormwater. • Stormwater Storage -This wetland are part of a large wetland complex and had been impacted by prior land uses. These wetland was located in a rapidly developing part of King County. This wetland was large exhibited a substantial capacity to store stormwater. • Hydrologic Support -This wetland appeared large, and noted to pond a substantial amount of surface water throughout the growing season. Evidence of seasonal ponding.and saturation to the surface was significant. • Groundwater Recharge -This wetland appeared large, and to pond a significant amount of surface water throughout the growing season. Evidence of seasonal ponding and saturation to the surface was substantial. • Natural Biological Function -This wetland was large, and exhibited an extensive range of plant diversity and vegetation complexity. Unique habitat features (i.e. snags, fallen trees, mature trees along the wetland boundary) were limited adjacent to the project site. Following the function and value assessment process noted above Wetland B were rated as exhibiting a low rating: • Water Quality Benefits -This wetland was small and had been impacted by prior grazing and pasture and land management. This wetland appeared to retain less than 25% of the runoff which occurred within the local area. This wetland also exhibited a limited vegetation diversity as a result of prior grazing and land use. The primary water quality benefit provided by This wetland was a very limited amount of biofiltration of surface stormwater. • Stormwater Storage -This wetland appeared within a topographic depression and had been impacted by prior land uses. T_his wetland was located in a rapidly developing part of King County. This wetland was small and exhibited a very limited ability to store stormwater. • Hydrologic Support -This wetland appeared small, and noted to pond a limited amount of surface water early in the growing season. Evidence of seasonal ponding and saturation to the surface was limited. • Groundwater Recharge -This wetland appeared small, and to pond a limited amount of surface water early in the growing season. Evidence of seasonal ponding and saturation to the surface was limited. 031103 Boston 124"' Ave. SE -9 Wetland Report • Natural Biological Function -This wetland was small, and exhibited a very limited range of plant diversity and vegetation complexity. Unique habitat features (i.e. snags, fallen trees, mature trees along the wetland boundary) were absent. ' REGULATORY CONSIDERATION The proposed alteration of lands defined by various federal, state, and local authority rules and regulations as ''wetlands" raises environmental concerns that are generally addressed in the development review process. These concerns center around the development's potential adverse impacts to the structure, function, value, and size of these "wetland" areas. Such adverse impacts may include a reduction in wildlife habitats, reduced surface water quality, reduced water retention, a reduced ground water recharge rate, reduced plant species diversity, and the reduction in the function and value of other associated wetland and non-wetland characteristics. U.S. ARMY CORPS OF ENGINEERS -Section 404 Section 404 of the Clean WatefAct (33 U.S.C. 1344) prohibits the discharge of dredged or fill material into 'Waters of'the United States" without a permit from the Corps of Engineers (Corps). The Corps has jurisdiction over freshwater systems waterward from the ordinary high water line of a water body or waterward from the upland boundary of the adjacent wetland. The definition of fill materials includes the replacement of aquatic areas with dry land, grading which changes the surface contour of a wetland, and mechanized land clearing in wetlands. For the purposes of Section 404 permitting the Corps makes the final determination as to whether an area meets the wetland definition and would be subject to regulation under the Corps program. Currently the Corps has two specific types of permits which apply to wetland fill proposals. These two types are a series of specific Nationwide Permits and the Individual Permit. The Nationwide Permit process identifies specific categories of work that can be undertaken following a set of specific conditions applicable to each Nationwide Permit number. For example; NWP#12 allows for the limited, short term impacts to wetlands for the placement of utilities, and NWP#14 allows for a limited impact to wetlands as a part of the development of a roadway crossing. The Corps has · noted several times within information papers, documents, and workshops that a project proponent that places fill within a wetland without specific Corps authorization does so at the proponent's own risk. The Corps requires an Individual Permit where a proposed activities within an identified jurisdictional wetland area can not be authorized under one of the Nationwide Permits. Within the Individual Permit process the Corps undertakes a much more in- depth review of the proposed project and the proposed impacts. The Corps must evaluate whether the benefits derived from the project outweigh the foreseeable environmental impacts of the project's completion. 031103 Boston 124" Ave. SE -10 Wetland Report STATE OF WASHINGTON DEPARTMENT OF ECOLOGY Proposed action undertaken through either of the Corps of Engineers processes (Nationwide, Individual, or isolated) are also subject to the provisions of the Washington State Department of Ecology Water Quality Certification Process. Projects that may be exempt from Corps of Engineers Section 404 jurisdiction may still require review by the Washington State Department of Ecology to ensure consistency with State water quality protection provisions. KING COUNTY -"Environmentally Sensitive Areas" Ordinance 21A.24 • Wetland and Stream Classes King County regulates activities in and around wetland areas. Such regulations also require that an undisturbed native vegetation buffer be retained along the upland side of the identified wetland areas. To assist in this regulation the County has defined classes by which to regulate wetlands, streams, and their associated buffer area. These categories are based on such features as size; the presence of endangered or threatened plants, fish, or animals; regionally rare wetlands; wetlands of local significance for wildlife or stormwater functions; the number of wetland classes and subclasses; and percentage of open water. A Class 1 Wetland means a wetland assigned the Unique/Outstanding rating in the King County Wetlands Inventory; or any wetland which meets any of the following criteria: . 1. The presence of species listed by the federal government or state as endangered, or threatened, or the presence of critical or outstanding actual habitat for those species; 2. Wetlands having 40% to 60% permanent open water in dispersed patches with two or more classes of vegetation; 3. Wetlands equal to or greater than ten acres in size and having three or more wetland classes, one of which is open water; or 4. The presence of plant associations of infrequent occurrence. A Class 2 Wetland means a wetland assigned the Significant #2 Rating in the King County Wetlands Inventory; or any wetlands which meet any of the following criteria: 1. Wetlands greater that one acre in size; 2. Wetlands equal to or less that one acre in size and having three or more wetland classes; 3. Wetlands equal to or less than one acre that have a forested wetland class; 4. The presence of heron rookeries or raptor nesting trees. 031103 Boston 124'" Ave. SE-11 Wetland Report A Class 3 Wetland means a wetland assigned a Lesser Concern #3 Rating in the King County Wetlands Inventory, 1983, or uninventoried wetlands that area equal to or less than one acre in size and that have two or fewer wetland classes. King County does not regulate wetlands less than 2,500 square feet in total size within the Urban Growth Boundary of King County. King county defines "Streams" as those areas in King County where surface waters produce a defined channel or bed, not including irrigation ditches, canals, storm or surface water run-off devices or other entirely artificial watercourses, unless they are used by salmonids or are used to convey streams naturally occurring prior to construction in such watercourses. • Required Buffers King County has established a standard buffer to be applied to a wetland or stream to assure protection of the wetland function and value. This buffer area is measured perpendicular to the defined wetland edge or perpendicular to the identified ordinary high water mark of a stream. WETLAND STANDARD BUFFER CLASS WIDTH -1 100 feet 2 SO feet 3 25feet King County allows the standard buffer to be modified where such actions would provide additional protection to wetlands or enhance the wetland's functions (21A.24.320.B). Buffer averaging may be allowed as long as the total area contained in the buffer on the development proposal site does not decrease and the minimum width of the final buffer is not less than 65% of the standard buffer width. 031103 Boston 124"' Ave. SE -12 Wefland Report SELECTED ACTION PLAN The Selected Action Plan of the Soos Creek Plat project site focuses on the creation of independent lots suitable for the development of single-family homesites consistent with the King County Comprehensive Plan. A primary feature in the creation of these homesite lots will be the establishment of $ protective buffer adjacent to the identified offsite wetland consistent with the King County Environmental Sensitive Areas Ordinance. Wetland B will be filled in accordance with King County regulation. Preliminary development and mitigation plans are submitted by the Owner (Boston Design & Development) as an attachment to this report. 031103 Boston 124"' Ave. SE-13 Wetland Report FIGURES 031103 Boston 124., Ave. SE -14 WeUand Report ;I ,w ;I IJ.343 o30~ 01m 03~.-s f ono 03.ljo~· o~.20 SE 1 11!1im_sr 004 0223 02.010~·1 Q20i 00 .. ~1 02.Hi ~ ...... Oi2• 0222 0200 cxu· 0241 024~ l,IJ ____ 0244 0242 ;1 ~ ~ 0200 0~25 0300 032() 00,,'lt 0340 00t6 0020 1 SelraclE1d Fealurvs Streets Parcel ;I Fish and Ditch ,w Wildlife Netwofk SAO Stream !ml (OCl1'.) 024! 0035 / Legend c,-1 C!o'ISS 2 Pa-en~.; C1z1,2&,;ma1d c~:) Ur,o.rs.,.;q SAO 'Wetland 0262 :( ~ 0043 ~ ~ 9024 ©t2 ~ ro,• 9064 f.)()40 902S 004S 90/.1 \l034 0 0500 o:!50 ~ .. J"'.11' s.°"~. JO C)SlQ' OJtO 0030 0270 0640.. 02!!0 0650 . . . ~ a\ 0230 06,70 ~ · . t ;.,.~~ .. cQ·90 ....... ovo 0110 0720 0130 w E Figure 1. Site Vicinity And King County Wetlands Map Soos Creek Plat • • • 49.a, • • • • • • www....-e , . • 0.06 I ·~ .. \ ' I\ I Renton nwi / ~ . Renton nw1 CJPEMC PEMF • • • • • 0 -PFOC I IPSSC w 0.06 N E s I 0.12 Miles Figure 2. Soos Creek Plat NWI Map REFERENCE LIST Adamus, P.R., E.J. Clairain Jr., RD. Smith, and RE. Young. 1987. Wetland Evaluation Technique (WET); Volume II: Methodology, Operational Draft Technical Report Y-87, U.S. Army Engineer Waterways Experiment Station, Vicksburg, Mississippi. Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. Classification of Wetlands and Deepwater Habitats of the United States. Office of Biological Services, U.S. Fish and Wildlife Service, U.S. Department of the Interior, FWS/OBS-79/31. Environmental Laboratory. 1987. "Corps of Engineers Wetlands Delineation Manual," Technical Report Y-87-1, US army Engineer Waterways Experiment Station, Vicksburg, Miss. Hitchcock, C.L., A. Cronquist. 1977. Flora of the Pacific Northwest. University of Washington Press. Seattle, Washington. Homer, R.R. and K.J. Raedeke. 1989. Guide for Wetland Mitigation Project Monitoring. Washington State Department of Transportation. contract number GC8286, task 6. King County Department of Natural Resources. 1993. DRAFT Wildlife Management in King County: Issue Paper. Mikol, S.A. 1980. Field Guidelines for Using Transects to Sample Nongame Bird Populations. U.S. Fish and Wildlife Service publication FWS/OBS -80/58. Reppert, RT., W. Sigleo, E. Stakhiv, L. Messman, and C. Meyers. 1979. Wetland Values -Concepts and Methods for Wetland Evaluation. Research Report 79-R1, U.S. Army Corps of Engineers, Institute for Water Resources, Fort Belvoir, Virginia. U.S. Department of Agriculture, Soils Conservation Service. Soils Survey of King County Area Washington, Nov. 1973. Washington State Department of Ecology. 1997. Washington State Wetlands Identification and Delineation Manual. Publication Number 96-94. Washington State Department of Fisheries, Catalog of Washington Streams and Salmon Utilization, Volume 1., 1975 031103 Boston 124"' Ave. SE-15 Wetland Report APPENDIX A FIELD DATA FORMS 031103 Boston 124"' Ave. SE -16 Wetland Report Data Fonn Routine Wetland Determination Project/Site: Boston 124th Ave. SE Job Number: 031103 City: none Wetland Data Point: SP 1 Applicant/Owner: Boston Design & Develop-Co. Investigator: M, Heckert Date: December 17, 2003 County: King State: Wa [XJ Do normal circumstances exist on the stte? [ J Have vegetation, soils, or hydrology been disturbed? Community ID: Foresf Station ID: [ J Is the area a potential problem area? Plot 10: Vegetation Dominant Species Common Name % Cover Indicator Herbaceous X Phalaris arundlnacea Grass.Reed Canary 50 FACW ~ X Oemleria cerasifoonis Indian Plum 25 FACU X Rubus armenlacus Blackberry,Hlmalaya 50 FACU rm X Alrlus rubra Alder.Red . 66 FAC % Species that are OBL, FACW, or FAC (except FAC-): 50 ·----~c·ow-a-rd"ln~C~l'assffi~. ~cat~io"'n"': '----="'--- Remarks appears to drain well Hydrology [ J Recorded Data (describe in remarks) [ J Stream, Lake, or Tide Gage [ J Aertal Photograph [ J Other (describe in remarks) Field Observations: Depth of Surface Water(in.): O Depth to Free Water in Pit(in.): >24 Depth to Saturated Soils(in.): >24 Remarks appears to drain wen Soils Primary Wetland Hyclro/ogy lndlcalonl [ J Inundated [ J Saturated In upper 12 inches [ ] Water marks [ J Drift lines [ J Sediment depostts [ J Drainage patterns in wetlands Secondary Hydrology Indicators [ J Oxidized root channels [ J Water-stained leaves [ J Local soil survey data [ J FAC-Neutral test [ J Otller (explain in ramarks) Depth (in.) Hor. Matrix Color Mottle I 2nd Mottle Texture, Structure, etc. Cofor Abundance Contrast ~ 6-18 A 10YR312 B 10YR 313 Hydric Soils Indicators [ J Hlstosol [ J Histic Epipedon [ J Sulfidlc Odor [ I Probable Aquatic Moist Regime [ ] Reducing Condttions [ I Gleyed or Low-Chroma Colors UnttName: Drainage Class: Remarks appears to drain well Wetland Detennin•tion [ I Hydrophytic Vegetation Present [ I Hydrtc Soils Present [ I Wettand Hydrology Present Remarks fill wetiand criteria NOT met appears to drain well J Concretions Coarse Sandy Loam stones Coarse Sandy Loam stones J High Organic % in Surface Layer I Organic Streaking J Listed on Local Hydric Solis List J Listed on Netlonal Hydric Soils List J Other (explain in n,marks) Taxonomy: [ J Field Observations matCh map [ J This Data Point IS a Wetland Paae 1 of 10 Data Form Routine Wetland Determination Project/Stte: Boston 124th Ave. SE Applicant/Owner: Boston Design & Development Co. Investigator: M. Heckert [XI Do nonnal circumstances exist on the site? [ I Have vegetation, soils, or hydrology been disturbed? [ ) Is the area a potential problem area? Vegetation Job Number: 031103 City: none Wetiand Data Point SP 2 Date: December 17, 2003 County: King State: Wa Communtty ID: Station ID: Plot ID: Dominant Species Common Name % Cover Indicator ff@Pacepqs X Phalaris arundinacea Grass.Reed Canary 90 FACW amll. X Rubus spectsbi/is Ber,y,Salmon 25 FAC X Spiraea doualasll Spiraea.Doualas' 25 FACW % Species that are OBL, FACW, or FAC(except FAC-): 100 Remarks Cowardln Classification: psse appeers to drein poorly Hydrology [ I Recorded Data (describe In remarks) I I Stream, Lake, or Tide Gage [ I Aerial Photograph [ J Other (desaibe in remerks) Field Observations: Depth of Surface Water(in.): O Depth to Free Water in Pi~in.): 12 Depth to Saturated Soils(ln.): 12 Remarks appears to drain poorly Soils Primary Welland Hydrology Indicators [ I Inundated (XI Saturated in upper 12 inches (XI Water marks [ I Drift lines (XJ Sediment deposits [ I Drainage p-ms in weHands Mottle / 2nd Mottle Secondary Hydrology Indicators (XI Oxidized root channels [ I Water-stained leaves [ I Local soil survey data [ I FAG-Neutral test [ I Other (explain In remarks) Depth Hor. (In.) Matrix Color Color · Abundance Contrast Texture, Structure etc. 0-6 A 6-18 B 10YR 312 10YR313 Hydrtc Soils Indicators [ I Histosol [ I Histlc Epipedon [ J Sulfidlc Odor 10YR5/6 [XI Probable Aquatic Moist Regime [XI Reducing Conditions [XI Gleyed or Low-Chroma Colors Untt Name: Drainage Class: Remarks appears to drain poorly Wetland Determination [XI HydrophyHc Vegetation Present [XI Hydric Soils Present (XI WeUand Hydrology Present Remarks fill wetland criteria MET appears to drain poorly wlA A1 toA22 common distinct [XI Concretions Coarse Sandy Loam cobbles Coarse Sandy Loam stones [ I High Organic % in Surfaca Layer [XI Organic Streaking [ J Listed on Local Hydric Solis List [ I Listed on National Hydric Soils List [ J Other (explain In remarks) Taxonomy: [ J Field Observations match map [XJ This Data Point is a Wetland Paoe 2 of 10 Data Form Routine Wetland Determination Project/Sile: Boston 124th Ava. SE Applicant/Owner: Boston Design & Development Co. Investigator: M. Heckert Job Number: 031103 City: none Wetland Data Point SP 3 Date: December 17, 2003 County: King State: Wa =~=-='-'-'=cc_-~~~~~------------[XI Do normal circumstances exist on the site? [ ) Have vegetation, soils, or hydrology been disturbed? [ ] is the area a potential problem area? Community ID: Palustrlan shrub/ Station ID: Vegetation Dominant Species ttemaceou X Pheleris arondinacea ~ Plot ID: Common Name % Cover Indicator Grass.Reed Canary 90 FACW X Sa/Ix sitchensis Willow Sitka 70 FACW % Species that are OBL, FACW, or FAC(except FAC-): 100 Remarks Cowardin Classification: pssc appears to drain poorty Hydrology [ I Recorded Data (describe in remarks) [ ] Stream, Lake, or Tide Gage [ l Aerial Photograph [ ] Other (describe in remarks) Field Observations: Depth of Surface Water(in.): O Depth to Free Water In Ptt(in.): 6 Depth to Saturated Soils(ln.): 6 Remarks appears to drain poorly Soils Primary Wetland Hydrology Indicators [ ) Inundated [X] Saturated in upper 12 inches [ )Watermarks [ ] Drift lines [XI Sediment depostts [X] Drainage patterns in wetlands Secondary Hydrology Indicators [XI Oxidized root channels [XI Water-stained leaves [ J Local soil survey data [ J FAC-Neutral test [ I Other (explain in remarks) Depth (In.) Hor. Matrix Color Mottle / 2nd Mottle Texture, Structure, etc. Color Abundance Contrast 0-6 6-18 A 10YR311 A/B 10YR4/1 Hydric $oil$ Indicators [ J Histosol [ I Hlstic Epipedon [ J Sulfidic Odor 10YR5/6 [ J Probable Aquatic Moist Regime [ ] Reducing CondHions [ J Gleyed or Low-Chroma Colors Unit Name: Drainage Class: Remarks appears to drain poorly Wetland Determination {XI Hydrophytlc Vegetation Present [X) Hydrlc Soils Present (XI Wetland Hydrology Present Remarks common distinct I Concretions Coarse Sandy Loam pebbles Loamy Sand stones I High Organic % in Surface Layer J Organic Streaking ] Listed on Local Hydric Solis Lisi J Listed on National Hydric Soils List J Other (explain in remarks) Taxonomy: [ I F,eld Observations match map (XI This Data Point is a Wetland on edge wetland criteria MET appears to drain poorly Paae3of 10 Data Form Routine Wetland Determination Project/Site: Boston 124th Ave. SE Job Number. 031103 City: none WeUand Data Point SP 4 Applicant/Owner: Boston Design & Development Co. Investigator: M. Heckert Date: De<:ember 17, 2003 County: King State: Wa [XI Do normal circumstances exist on the site? Community ID: [ J Have vegetation, soils, or hydrology been disturbed? [ ] Is the area a potential problem area? Vegetation Dominant Species HfltPICt9UI X Pha/aris 8/Undlnacea Common Name Grass.Reed Canary ~ Rubus annen/acus Blackberry,Hlmalaya X Salix hookerana wmow,Hooi<er X Populus trichocarpa Cotton-Wood, black Station ID: Plot ID: % Covar Indicator 80 FACW 25 FACU 6 FACW- 40 FAC % Species that are OBL, FACW, or FAC(except FAC-): 75 Remarks Cowardin Classification: PSS-PFO appears to drain poorly Hydrology ( I Racorded Data (describe In remarks) [ J Stream, Lake, or Tide Gage [ J Aerial Photograph [ ] Other (describe In remarks) Field Observaliona: Depth of Surface Water(in.): o Depth to Free Water In Pi~in.): 3 Depth to Saturated Soils(ln.): 3 Remarks appears to drain poorly Soils Primary Welland Hydrology Indicators [ ] Inundated [XI Saturated In upper 12 inches [XI Water marks [ ] Drift lines [ I Sediment deposits [XI Drainage patterns in wetlands Secondary Hydrotogy Indicators [XI Oxidized root channels [ J Water-stained leaves [ I Local soil survey data [ I FAC-Neutral test [ I Other (explain in remarks) Depth (In.) Hor. Matrix Color A/B 10YR412 Mottla I 2nd Mottla Texture, Structure etc. Color Abundance Contrast 0-18 1 OYR 516 common distinct Coarse Sandy Loam pebbles Hydric So/ls Indicators [ I Hlstosoi [ I Hlstic Epipedon [ I Sulfidi() Odor [XI Probable Aquatic Moist Regime [XI Reducing Conditions [XI Gleyed or Low.Chroma Colors Unit Name: Drainage Class: Remarks appears to drain poorty Wetland Determination [XI Hydrophytic Vegetation Present [XI Hydric Soils Present [XI WeHand Hydrology Present Remarks wetland criteria MET appears to drain poorty [ ] Concralions [ I High Organic % In Surface Layer [XI Organic Streaking [ I Listed on Local Hydrtc Sons List [ I Listed on National Hydric Soils List [ J Other (explain in remarks) Taxonomy: [ I Field Observations match map [XI This Data Point is a Wetland Paae 4 of 10 Data Form Routine Wetland Determination Project/Sile: Boston 124th Ave. SE Applicant/Owner: Boston Design & Development Co. Investigator: M. Heckert Job Number: 031103 City: none Wetland Data Point SP 5 Date: December 17, 2003 County: King State: Wa [XJ Do nom,al circumstarn:es exist on the site? ( J Have vegetation, soils, or hydrology been disturbed? [ J b the area a potential problem area? ·· ·· Community ID: Palustrian shrub/ Station ID: Vegetation Domlnent Species tftr1Mct9U§ X Phalaris arondinacea atJ/11 Common Name Grass.Reed Canary X Spiraea douglasii Spiraea, Douglas' X Salix sitehensis WUJow,Sltka X water birch Plot JD: % Cover Indicator 90 30 25 21 FACW FACW FACW % Species that are OBL, FACW, or FAC(exoept FAC-): 75 Remarks Cowardln Classification: pac appears to drain poorly Hydrology [ J Recorded Data (describe in remarks) [ I Stream, Lake, or TKle Gage ( J Aerial Photograph [ I Other (describe In remarks) F~ ObservatiOns: Depth of Surface Water(in.): O Depth to Free Water in Pit(in.): 8 Depth to Saturated Solls(in.): 8 Remarks appears to drain poorly Soils Primary Wetland Hydrology lnd/calon; [ J Inundated [X] Saturated in upper 12 Inches [XI Water marks [ I Drift lines [ I Sediment deposits [ I Drainage pattems in wetlands Secondary Hydrology Indicators [XI .Oxidized root channels [X] Water-stained leaves [ J Local soil survey data [ I FAC-Neutral test [ J Other (explain in remarks) Depth (in.) Hor. Matrix Color A/B 10YR412 Mottle I 2nd Mottle Texture, Structure. etc. COkir Abundance con&ast distinct 0-16 1 OYR 516 common Loamy Sand Hydric Soils tndkJators [ I Histosot [ I Hlstic Epipedon [ I Sulfidlc Odor [ J Probable Aquatic Moist Reglma ( J Reducing Condttions [ J Gleyed or Low-Chroma Colors Untt Name: Drainage Class: Remarks appears to drain poorly Wetland Determination [XI Hydrophytic Vegetation Present [XI Hydrtc Soils Present [XI Wetland Hydrology Present Remarks wetland criteria MET appears to drain poorly ( J Concretions [ J High Organic % in Surface Layor I I Organic Streaking I I Listed on Local Hydrlc Soils List [ I Listed on National Hydric Soils List [ J Other (explain In remarks) Taxonomy: [ I Field Observations match map [XI This Data Point Is a Wetland PS<le 5of 10 ATTACHMENT 1 WETLAND DELINEATION MAP 031103 Boston 124" Ave. SE-17 Wetland Report Whittaker, Bruce From: Sent: To: Cc: Subject: Foley, Steve Tuesday, September 28, 2004 3:49 PM Claussen, Kimberly Whittaker, Bruce; Kahan, Josh Soos Creek Plat L04P0002 Kim, thank you for the opportunity to look at the revised submittal for the Soos Creek Plat. I noted that the geotech report does not include complete soil logs, that the percolation tests were not done where the infiltration facilities are proposed, and there is no indication of the soils present below the bottom of the proposed facilities. Also noted that the engineer took the raw percolation test data with no adjustments or safety factors to do the preliminary facility design calculations. Based on the information contained in the the submittal, I am concerned that the proposed infiltration facilities will not perform as indicated. I attached our comments on the previous version of this project for your reference. Let me know if you have any questions. --Steve FW: Soos Creek Soos Creek Plat Plat L04P0002 L04P0002 Steve Foley Senior Engineer Water and Land Resources Division 20 I S Jackson, Seattle 98104 206-296-1973 FAX 206-296-0192 1 Whittaker, Bruce From: Sent: To: Cc: Subject: December 8, 2004 Charles Spaeth [cshaffercorp@att.net] Thursday, December 09, 2004 9:55 AM kimberly.claussen@metrokc.gov; nick.gillen@metrokc.gov; larry.west@metrokc.gov; bruce. whittaker@metrokc.gov lisa.dinsmore@metrokc.gov; stephanie.warden@metrokc.gov; jim.sanders@metrokc.gov; steve.bottheim@metrokc.gov FW: Soos Creek Application; L04P0002 To: Kimberly Claussen, Nick Gillen, Larry West, Bruce Whittaker CC. Lisa Dinsmore, Stephanie Warden, Jim Sanders, Steve Bottheim From: Charles Spaeth, (Soos Creek Real Estate LLC) Re: Project Application No. L04P0002 This correspondence shall serve to notify DOES Staff (and their supervisors) who have been involved in the review of the above referenced project that this plat application became "complete" (per Section 20.20.050.C. of the King County Code) on October 1, 2004. History of Application: --The application for this plat was originally filed February 4, 2004 by Rick Boston of Boston Design and Development LLC. --February 27, 2004: Kim Claussen issued a "Notice oflncomplete Action" to Mr. Boston requesting additional information. --March 17, 2004: Kim Claussen issued a "Notice of Request for Additional Information or Studies" to Mr. Boston. --Early June, 2004: Mr. Boston requested in writing an extension for the submittal of the additional information which Kim Claussen granted. The extension set the new date for submittal of additional information at September 21, 2004. --July 8, 2004: Soos Creek Real Estate LLC purchased the project from Boston Design and Development LLC. --September 16, 2004: Charles Spaeth and John Minden as Soos Creek Real Estate LLC filed a "Certification of Applicant Status" report declaring that Soos Creek Real Estate LLC was now the applicant of record. --September 16, 2004: an extensive package of information compiled by civil engineer William Taylor ofTEC addressing all issues raised in Kim Claussen's March 17th "Notice of Request for Additional Information or Studies" was submitted to Ms. Claussen. --October I, 2004: As per Section 20.20.050 the application became complete --December 8, 2004: (82 days following the submission of additional information on September 16th) the Applicant has yet to receive a "A Notice of Request for Additional Information", nor a notification specifying that the application is complete. I request that DDES staff let the applicant know as soon as possible what additional information they may need so as not to further delay the review of this application. Respectfully Submitted: Soos Creek Real Estate LLC 1 ,,. . By: Charles Spaeth, Managing Member cshaffercorp@att.net 206-526-8481 2 ® King County Department of Development and Environmental Services Land Use Services Division 900 Oakesdale Avenue Southwest Renton, Washington 98055~1219 Plat Screening Transmittal Preliminary Plat Application of Soos Creek LUSD File No. L04P0002 Date of Information Request: December 13, 2004 Deadline for Submittal of Information: March 14, 2004 Please provide ten (10) copies of the following, unless otherwise noted. Note, the following items are in addition to the information requested for complete application (see February 27, 2004 letter). Utilities/Sewer Line: The proposed construction of sewer line(s) through the wetland is not a permitted alteration under KCC 21A.24. Provide an alternative route or method of construction (i.e. boring) or submit for a reasonable use exception application (RUE) if this is proposed to be constructed by the developer or a PAUE if construction proposed by the utility district Wetland Mitigation Plan: Submit a plan prepared by a qualified biologist which identifies proposed buffer mitigation. Geotechnical Study: Provide a geotechnical study prepared and stamped by a qualified geotechnical engineer, which evaluates the areas of slopes that are 40% or greater and exceed 20 feet in height as these areas will be required to be placed in sensitive area tract(s). In addition, the report shall provide recommendations regarding the buffers, building setback lines (bsbl) as well as recommendations related to the construction of the roads, lots and as necessary, the drainage facilities. The study should also provide a stability evaluation of the entire slope underlying the plat. It may be necessary to drill one or more deep borings in order to obtain the soil (type and strength) and groundwater conditions necessary to be able to perform this evaluation. The study must also address whether or not the proposed storm water infiltration can be accomplished and if so, can it be done without destabilizing any portion of the slope. Conceptual Grading Plan: Provide a conceptual grading plan for the lots and roads and indicate areas of rockeries and/or proposed retaining walls and preliminary heights. Note, depending upon the height of proposed rockeries and walls, additional setbacks and/or review may be necessary. Drainage: The following information must be prepared and stamped by a civil engineer licensed in the State of Washington. • Submit a geotechnical study performed by a geotechnical consultant which evaluates the feasibility of infiltration on the site. This study should include depth to seasonal high ground water through the winter season. Other options should be evaluated to determine if feasible (i.e. disperse pond into wetland(s)), as there are concerns that infiltration may not be possible on this site. • The site is within a split Level 2/Level 1 Flow Control area per the KCSWDM. If the proposed conceptual drainage plan reflects only Level 1 Flow Control, this aspect should be added to the adjustment request. • Off-site flow/bypass? Roads: • Please provide a Level One traffic impact analysis, prepared by a licensed engineer with expertise in traffic engineering, that expands the limited scope traffic analysis (turn lane and sight distance) assessment previously submitted. • Provide a conceptual (to scale) intersection improvement plan for the intersection of 1241h Ave SE/SE 192nd Street, based upon an actual survey of pavement edges, proposed curb lines, channelization, etc. Demonstrate alignment of the proposed improvements with the existing improvements to the south on 1241h Ave SE (b) provide a conceptual revision of either the north or south leg to eliminate any Soos Creek Plat -L04P0002 12/04 offset, or (c) apply for and receive a variance to the KCRS for the construction centerline to construction centerline offset. • Revise the plat plan to eliminate the angle point in the horizontal alignment of the proposed plat street and substitute a "low speed" horizontal curve per the KCRS. The revision may result in other modifications and comments to the plat. This appears, at least, to result in the P.A. T.'s exceeding the +/-5 degree criteria for centerline angle of perpendicularity. • Provide a preliminary centerline profile for the proposed plat street, west of 124th Ave SE • Provide additional information, specifically curve data, for the centerline alignment of the overall plat street system: 1241h Ave SE extension and SE 191'1 Ct. Significant Trees-S0-220: Provide a conceptual retention/replacement plan which addresses S0-220/KCC 21A.38.230 -Significant Trees Revised Preliminary Plat: Provide 25 copies of a revised preliminary plat, as necessary, as a result of above- referenced requests for additional information as well as number all lots and provide clear delineation between property lines, lot lines, tracts, right-of-way, etc. As a result of the review of the infonnation, additional infonnation (studies, revisions, etc.) may be requested at a later date. Further evaluation of these issues may result in the reconfiguration and/or loss of lots. Soos Creek Plat -L04P0002 12/04 ® King County Department of Development and Environmental Services 900 Oakesdale Avenue SW Renton, WA 98055-1219 March 17, 2004 Rick Boston Boston Design and Development LLC 14225 E. Lake Kathleen Drive SE Renton, WA 98059 RE: Notice of Request for Additional Information or Studies Application No. L04P0002 -Soos Creek Date Filed: February 4, 2004 Dear Mr. Boston: The purpose of this letter is to notify you pursuant to King County Code Title 20 that the Land Use Services Division is requesting additional information and/or studies to complete the review of your project. The information is described on the enclosed plat screening transmittal. When submitting the requested information, include a copy of the plat screening transmittal and retain a copy for your records. Provide a cover letter, which lists how each item, was addressed. Any clarification or explanation of the submittal can also be included in the cover letter. Please submit the information to: King County Dept. of Development and Environmental Services Land Use Services Division ATTN.: Kim Claussen, Project Manager Ill, Current Planning Section 900 Oaksdale Avenue Southwest Renton, WA 98055-1219 If the submittal is hand delivered, submit at the address above. Your application is on "hold" from the date of this notice, until the date you are advised that the additional information satisfies this request or 14 days after the date the information has been provided. You will be notified if the Division determines that the information is insufficient. Please note that the supplemental information required after vesting of a complete application shall not affect the validity of such application. The deadline for the submittal of the necessary information is June 21, 2004. In the event you feel extenuating circumstances exist, which may justify an extension of this date, you may submit such request, in writing, for consideration by this Department. Failure to meet the deadline shall be cause for the Department to cancel or deny the application. If possible, please submit all of the information in one package. If you have any questions, regarding the additional information or the submittal deadline, please call me at (206) 296- 7167. Sinc~rely~ ~-,. Project Maaa"" Ill Current Planning Section Cc: Jacques Consulting w/enc Bruce Whittaker, Senior Engineer, Engineering Review Section, LUSD w/enc Nick Gillen, Senior Ecologist, Critical Areas Section, LUSD w/enc Larry West, Senior Geologist, Critical Areas Section, LUSD w/enc Kris Langley, Senior Engineer, Traffic & Engineering Section, KCDOT w/enc Application File w/enc ® King County Department of Development and Environmental Services Land Use Services Division 900 Oakesdale Avenue Southwest Remnn, Washington 98055-1219 't'l'~nsmittar< ..• ··•·····. .· ·• . • plic!lti6n of Soos Creek · . < . i:m(No. L0~P0002 •·•··· ... A~tttoflijform!lti6n Request: March 17, 2,0.04 QiEtdliri!;iiif~rc Sut;11;1iJtal of Information: June 21, 2004 Please provide ten ( 10) copies of the following, unless otherwise noted. Note, the following items are in addition to the information requested for complete application (see February 27, 2004 letter). Recreation Space: Submit a conceptual recreation plan that indicates the type of improvements (i.e. sport court, play structure, benches, landscaping, etc.) proposed within the recreation tract(s). See KCC 21 A 14.180 E2 for equipment requirements. Walkways: Provide an inventory map (i.e. existing conditions -widths, surface type, etc.) of the walking routes to the elementary, junior high/middle and high school and/or the appropriate bus stop location associated with each school. Identify any improvements necessary to provide safe walking conditions. Letter(s) of intent: Provide a letter(s) of intent from King County Parks and other affected property owners' indicating the willingess to dedicate the necessary right-of-way and construction of 1241h Avenue SE as well as additional improvements within the park (i.e. the walkway, landscaping and drainage facilities). If these letters cannot be obtained, the plat must be redesigned. Field Survey: Provide a copy of the base topographic map stamped by a licensed surveyor in the State of Washington. Utilities/Sewer Line: The proposed construction of sewer line(s) through the wetland is not a permitted alteration under KCC 21A.24. Provide an alternative route or method of construction (i.e. boring) or submit for a reasonable use exception application (RUE) if this is proposed to be constructed by the developer or a PAUE if construction proposed by the utility district Wetland Study: Submit a study prepared by a qualified biologist which delineates the wetland boundary, provides classification, buffer width(s), and proposed mitigation if impacts to the wetland and/or buffer are proposed (i.e. road crossing). Geotechnical Study: Provide a geotechnical study which evaluates the areas of slopes that are 40% or greater and exceed 20 feet in height as these areas will be required to be placed in sensitive area tract(s). In addition, the report shall provide recommendations regarding the buffers, building setback lines (bsbl) as well as recommendations related to the construction of the roads, lots and as necessary, the drainage facilities. The study should also provide a stability evaluation of the entire slope underlying the plat. It may be necessary to drill one or more deep borings in order to obtain the soil (type and strength) and groundwater conditions necessary to be able to perform this evaluation. The study must also address whether or not the proposed storm water infiltration can be accomplished and if so, can it be done without destabilizing any portion of the slope. Conceptual Grading Plan: Provide a conceptual grading plan for the lots and roads and indicate areas of rockeries and/or proposed retaining walls and preliminary heights. Note, depending upon the height of proposed rockeries and walls, additional setbacks and/or review may be necessary. BPA: Provide a letter of intent from BPA regarding the placement of the drainage facilities, and road improvements proposed within the easement as well as the ability to dedicate the drainage tract and additional right-of-way as necessary Soos Creek Plat -L04P0002 03/04 Regional Utility Corridor: Per KCC 21A.12.140 regional utility corridors shall be contained in separate tract(s). Please revise the plat to place the utility easement(s) in separate tract(s). This may result in the reconfiguration and/or loss of lots. Drainage: The following information must be prepared and stamped by a civil engineer licensed in the State of Washington. • Revise the Level 1 drainage analysis and complaint investigation pursuant to the 1998 Surface Water Design Manual. Please include complaint investigation for a distance of 1 mile downstream per the manual. Actual copies of the relevant complaints should be included. Drainage complaints can be obtained by calling KC Water and Land at 206-296-1900. Any complaints should be reviewed and classified Type 1, 2, or 3 problems per Core Requirement 2 of the KCSWDM. Provide narrative in the level 1 analysis describing the appropriate proposed mitigation for downstream complaints. • Provide a downstream drainage map in the revised Level 1 Analysis per Core requirement 2 of the KCSWDM • Revise the Level 1 drainage analysis to include a detailed description/analysis of the proposed drainage system. This must indicate how the proposal meets and/or exceeds the requirements of the King County Surface Water Design Manual, including flow control and water quality standards. • Submit a revised conceptual drainage plan which includes details of the proposed drainage system, including size of pond, conveyance, and water quality. Supporting preliminary drainage calculations should be included for the facility sizing. The conceptual plan should show facilities for infiltration, if proposed, and conventional detention/water quality for portions not suitable for infiltration. The proposed drainage plan should include provisions for detention and water quality for the 124th ave SE road improvements. These improvements must be located within the proposed road right-of-way or permission/easements must be obtained to construct offsite. A letter of intent from King County Parks or other owners is required if construction is proposed offsite. • Submit a geotechnical study performed by a geotechnical consultant which evaluates the feasibility of infiltration on the site. This study should include depth to seasonal high ground water. • A drainage adjustment is required from Core Requirement 1, to combine the onsite subbasins into one drainage facility. Also, the existing flow from the site is now dispersed sheet flow. Concentrating this flow in the post developed condition also requires an adjustment from Core 1. • The site is within a split Level 2/Level 1 Flow Control area per the KCSWDM. If the proposed conceptual drainage plan reflects only Level 1 Flow Control, this aspect should be added to the adjustment request. Roads: • Please provide a Level One traffic impact analysis, prepared by a licensed engineer with expertise in traffic engineering, that expands the limited scope traffic analysis (tum lane and sight distance) assessment previously submitted. • Provide a conceptual (to scale) intersection improvement plan for the intersection of 1241h Ave SE/SE 192"d Street, based upon an actual survey of pavement edges, proposed curb lines, channelization, etc. Demonstrate alignment of the proposed improvements with the existing improvements to the south on 124th Ave SE (b) provide a conceptual revision of either the north or south leg to eliminate any offset, or (c) apply for and receive a variance to the KCRS for the construction centerline to construction centerline offset. • Revise the plat plan to eliminate the angle point in the horizontal alignment of the proposed plat street and substitute a "low speed" horizontal curve per the KCRS. The revision may result in other modifications and comments to the plat. This appears, at least, to result in the P.A.T.'s exceeding the +/-5 degree criteria for centerline angle of perpendicularity. • Provide a preliminary centerline profile for the proposed plat street, west of 1241h Ave SE • Provide additional information, specifically curve data, for the centerline alignment of the overall plat street system: 1241h Ave SE extension and SE 191 '1 Ct. Soos Creek Plat -L04P0002 03/04 I Revised Preliminary Plat: Provide 25 copies of a revised preliminary plat, as necessary, as a result of above- referenced requests for additional information as well as number all lots and provide clear delineation between property lines, lot lines, tracts, right-of-way, etc. As a result of the review of the information, additional information (studies, revisions, etc.) may be requested at a later date. Further evaluation of these issues may result in the reconfiguration and/or loss of lots. Soos Creek Plat -L04P0002 03/04 February 9, 2004 TO: FM: Bruce Whittaker Nick Gillen Larry West Steve Foley Kim Claussen \~ RE: Soos Creek Plat -L04P0002 Attached is the following info for your review and comment - • Site plan • Tope Map • Level 1 drainage analysis • Conceptual Drainage plan • Environmental Checklist • Traffic Study (BW only) In House Meeting: tJElJ. 3~,!) //30 ,CJ//,:/ Please return written comments and/or requests for additional information to me by March 3, 2004. Thanks Whittaker, Bruce From: Sent: To: Cc: Subject: Langley, Kristen Wednesday, January 04, 2006 9:37 AM Tibbits, Chad Whittaker, Bruce Soos Creek Please confirm that the horizontal curves on the plat street comply with the criteria in Section 2.1 OE of the King County Road Standards, or submit and receive approval for a Variance to approve any non-standard design elements. It appears that the horizontal curves near Lots 23, 24 and 25 (for example) would require the use of the 100-foot centerline radius since the central angle of the curves is less than 75 degrees. Please confirm that 122"' Court SE and 123'' Place are proposed to be private access tracts. The proposed turnarounds do not meet the KCRS requirements for radius, and, since they are proposed, the deviation from the standard radius (40- feet) will need to be approved through the Variance process. Please show the required sight-line (stopping sight distance) for an eastbound vehicle on SE 191" Street on the approach to the 123" Place SE intersection. It appears that this may require some limited additional dedication across the southern portion of proposed Lot 5. The proposed 12-foot off-set in centerlines between the proposed north and (existing) south leg of the 1241h Avenue SE/SE 192"' Street intersection will require approval through the Road Variance process. Please submit an application for a Variance to Section 2.1 O of the KCRS for this item (as well as any other non-standard design elements). Approval of the Variance, or a redesign to fully comply with the Road Standards, must occur prior to the hearing for this project. Kristen Langley Senior Engineer, Traffic Impacts and Data Analysis Unit KCDOT/ Traffic Engineering 206 263-6102 (Seattle) 206 296-7155 (DDES -Renton) 206 296-0176 (fax Seattle) 206 296-6613 (fax Renton) 1 lro....-...pf't C '. 'r l 1,;,~~ ~ '\J <:::n ~ ='".:> L c:::, ~~ c:i c::>b "2__ A~\l~ t-"L~:J ~ l u ::::, = -f <Q.._ \..) ~ =--:::, t.,..,J • t \. ~ c.,.,, -D -c.,, .... =~ · =,"\~ct~ ~ . ..L~ r· , L t 5o ~ -t l r,-\es,,--,:s e.,:;?.....-~ a .....,, ~ E \. C\, 'L ~ :'.:::>'":J" r,..ec::.. .t \J o.._y-f0-AA,--~ "::)-+-C t \ T"' • • Fleuve Des Voiles: Fleuve Des Voiles L04P0002 and Cogger Short Plat LOS S0040 Re-Screening Conunents Bruce Whittaker 1/4/2006 Drainage:_A drainage adjustment is required from Core Requirement 1, to combine the onsite sub basins and changing sheet flow to concentrated flow. (see drainage bullet 6 our March 17, 2004 screening letter). Please clarify the conceptual drainage plan, it is unclear if stormwater infiltration is still proposed. Note that infiltration does not appear to feasible (Chad:add Larry West geotechnical conunents) Cogger Short plat: Drainage/Roads: I. A drainage adjustment is required to route the post-developed flows to the north into the proposed Fleuve Des Voiles drainage facility. The adjustment should include a shared facility plan approval. The adjustment should also address the merging of two drainage manual requirements, 1998 manual for Flueve Des Voiles and 2005 Manual for the Cogger Short Plat. 2. Submit a conceptual drainage plan and preliminary calculations showing compliance with the appropriate drainage manual. The preliminary calculations should show adequate capacity to include both subdivisions. 3. The proposed property lengths abutting the proposed on-site tum-around for the proposed lots 5 and TR-C/TR-J are inadequate for a driveway. Per the 1993 King County Road Standards (KCRS), the minimum driveway length is IO-feet and shall locate the edge of the driveway at a minimum 5-feet from the side property lines. 4. The proposed on-site tum-around should be revised to be consistent with the 1993 KCRS design requirements. 5. Narratives in the submitted drainage report shall clearly indicate that the proposed short plat is subject to full compliance with the 2005 KCSWDM guidelines or approved adjustment. 6. Revise the internal road design to meet the urban minor access road standard including sidewalk on one side. The sidewalk should be included in the proposed R/W. 7. The drainage report shall be revised accordingly, and three sets of revised plans and reports shall be included with the next engineering submittal. Note that infiltration does not appear feasible for these subdivisions. 8. Please note that this short plat is dependent on the Flueve Des Voilve subdivision approval and construction. All comments relative to the plat also apply to the short plat. ;q ''1 /ii ,, JI ' 111 I ' . ' ; ;! . ' T.. H. v... t :t ,..:.. . ( - . ' ,. 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I "·\·._··.·· ... ,. \ ' :: •,0¥~·:·.<\:c: _,_.,,.._< ),:«•»:«·~::'.'.7''":0:0f-",.:.f.0,:.:«>4'.~·-:'".v•"•"...:c-,;0xss,-,i,;:::·::::~;:;J:::..:-·.-.-• ·v. . ...- (.h -:z-.;-... ,/ L. ., ; .;: \ i I '.:-"< I I I I I I LOIT 1 ~ ii f:-· LOT ·,j --r "'-""" . . . ~ . , (~ 1 ·., \ 1 I OT 5 1 cf: ,, ' v, ' , .. ·,-, ii ~ ,·~ J IL I ~ ~ I I ---1 I I :;~ ?::::::::::/ ::? < :-. ················lOT--2· ·-· J, ... :~::· .... ~il~.~-.. , ... ,., ... ~~ LOT6/ ~{·.·.t --- REC. SPACE i :,:. : .... , ~ .. , ... -~ 12" STM TO CONNECT TO THE PROPOSED SOOS CREEi PLAT STORM DRAINAGE CONVEYANCE SYSTEM 17+72.74- ...... 7"'·-:i. --~.-,. .. ~_,;.,;.; ------····=···=····='.~-··-=-···=· 16+92 \ ,., ()0 .• ,j .•.. i . .1f11rrrfl'rt,, ('111!~~"" 0, './.'/ . I ~ : ~>Wd.•: .i' I .·, . I !:El I I I "•v ••• w, "r ;{ p f5·1q ,,, _,. . ; . •, (. '·, •: c·, I i .,-.. ..... ;", r!lrrrrrr11r11, -.11_ ,·ic,J'"· ~1·.·-v1 ... · I Lo4~ OtJ6 S' -I YEE 5 I° I Page I of I Whittaker, Bruce From: Bill Taylor [btaylor@teccivil.com] Sent: Thursday, June 15, 2006 3:26 PM To: Whittaker, Bruce Cc: De-En Lang; Charles Spaeth Subject: Fleuve de Voiles -L04P0002 Hi Bruce, We want to confirm a situation for the Fleuve de Voiles project that has been a topic of discussion in-house. Our storm drainage discharge from the detention/treatment ponds was originally designed/presented as KC standard dispersion trenches at a certain setback from the property line. This was to model the existing condition and develop sheet fiow for any surface runoff that might make it to the property line. I believe that under this circumstance that no drainage easement is required of the neighbor. Al some point in the review process (you may recall) Nick Gillen made the request to provide rock gabion lined discharge pits in-lieu of the standard dispersion trenches for stormwater discharge. The question is ... Does this change anything regarding the potential need for easement from the neighbor? The intent is still to facilitate sheet fiow at the property line. I understand that Nick's concerns were that the standard dispersion trench generally fails to disperse the runoff after time and settlement, more so than does this gabion lined pit. Please confirm that no easement will be required of the neighbor for the currently designed stormwater discharge from the pond. Thanks, Bill Taylor TEC, Inc. 425-391-1415 06/16/2006 Page I of I Whittaker, Bruce From: Whittaker, Bruce Sent: Friday, June 16, 2006 9:16 AM To: 'Bill Taylor' Cc: Gillen, Nick; Bergam, Mark; Tibbits, Chad Subject: RE: Fleuve de Voiles -L04P0002 Bill, I support and agree with Nicks' concept at the outlet, but this should be a evaluated with the proposed surface water adjustment L06V0040. This issue of concentrated flow at the property line is one of the elements of the adjustment request. I will forward this to Mark Bergam, who is reviewing the adjustment request. Please coordinate with Mark on this issue. Thanks, BruceW From: Bill Taylor [mailto:btaylor@teccivil.com] Sent: Thursday, June 15, 2006 3:26 PM To: Whittaker, Bruce Cc: De-En Lang; Charles Spaeth Subject: Fleuve de Voiles -L04P0002 Hi Bruce, We want to confirm a situation for the Fleuve de Voiles project that has been a topic of discussion in-house. Our storm drainage discharge from the detention/treatment ponds was originally designed/presented as KC standard dispersion trenches at a certain setback from the property line. This was to model the existing condition and develop sheet flow for any surface runoff that might make it to the property line. I believe that under this circumstance that no drainage easement is required of the neighbor. At some point in the review process (you may recall) Nick Gillen made the request to provide rock gabion lined discharge pits in-lieu of the standard dispersion trenches for stormwater discharge. The question is ... Does this change anything regarding the potential need for easement from the neighbor? The intent is still to facilitate sheet flow at the property line. I understand that Nick's concerns were that the standard dispersion trench generally fails to disperse the runoff after time and settlement, more so than does this gabion lined pit. Please confirm that no easement will be required of the neighbor for the currently designed stormwater discharge from the pond. Thanks, Bill Taylor TEC, Inc. 425-391-1415 06/16/2006 Whittaker, Bruce From: Langley, Kristen Sent: Monday, July 18, 2005 9:21 AM Whittaker, Bruce To: Subject: Fleuve des Voiles rescreening comments 1. The proposed intersection oft-set (12 feet, per Sheet P-2) between the north leg (the plat entrance) and south leg of 1241h Avenue SE can only be approved via a Variance to the King County Road Standards. Please submit an application for a Road Variance (available at http://www.metrokc.gov/ddes/forms/le-rqu-rdvar.pdf) to the County, for consideration of approval, approval with conditions, or denial by the King County Road Engineer. 2. The roadway horizontal curves on 123'• Avenue SE near Lots 23, 24 and 25, and on SE 191'1 near Lots 5, 24 and 39, are shown as 90-foot radii at centerline of the roadway traveled-way. Please confirm that the central angle of these curves is greater than 75 degrees, if not, then please revise the curve radii to a minimum of 100-feet per the "low speed curve" criteria in the KCRS. 3. Use of the ADA ramp detail from the KCRS (Dwg. 4-003) has been discontinued. Since this may result in some impacts to Lots 6, 8, 24, 32, 33, 39, Tracts "C" and "D", please show the additional right-of-way for the currently approved curb ramps. 4. Please revise 122"' Place and 123"' Place SE to be Private Access Tracts, rather than public Minor Access Streets. 5. Please show how the landing criteria from KCRS 2.1 O C is met at the interior intersections. This also applies to 122°• Place SE and 123•• Place SE. 6. The roadway profile indicates that a short section of the SE 191•1 Street (west of 122°• Ct SE -near SSMH -D) is at a grade of 19.70%, and that it appears to connect to a grade (on SE 191" Street) of 13.88% (near SSMH -E) without any vertical curve. Although exceeding the maximum grade allowed under the KCRS (15% for Urban Subaccess streets) is permitted "for short distances" without a Variance, it does require approval by the Fire Marshal. Kristen Langley Senior Engineer Traffic Impacts and Data Analysis/KCDOT (206) 263-6102 (Seattle) (206) 296-7155 (DOES Renton) I ® King County Departme~t of Development and Envir1>nmental Services 900 Oakesdale Avenue SW Renton, WA 98055-1219 February 14, 2005 Laura Murphy, Tribal Archaeologist Muckleshoot Cultural Resources Program 39015 172nd St. Southeast Auburn WA 98092 RE: Proposed Preliminary Plat of Fleuves des Voiles (fka Soos Creek Plat) ODES File No. L04P0002 Dear Ms. Murphy: Per your February 11, 2005 e-mail request, enclosed is copy of the proposed preliminary plat and environmental checklist for your review and comment Please provide written comments, if any, by April 14, 2005. If you have any questions, or would like additional information, please call me at (206) 296- 7167. Thank you for your cooperation. %,,ly~ ~ Wc~ssen Project Manager Ill, Current Planning Section cc: Charles Spaeth Bruce Whittaker, Senior Engineer, Engineering Review Section, LUSD I ! I ~ .. ll & _. ___ _ t . I I I I I I I i ~ I " r-i---~=~='---------~ L/- -- ® King County Department of Development and Environmental Services 900 Oakesdale Avenue SW Renton, WA 98055-1219 December 14, 2004 Charles Spaeth 6839 Ravenna Ave NE Seattle, WA 98115 RE: Notice of Request for Additional Information or Studies Application No. L04P0002 -Soos Creek Dear Mr. Spaeth: The enclosed preliminary plat application of Wehrman Property (DOES File No. L04P0027) was submitted to ODES on December 14, 2004. This proposal adjoins the north boundary of the Soos Creek preliminary plat. As a result of this submittal, please evaluate a road connection between the two proposed subdivisions, and the revise the plat accordingly. It does not appear that a variance to the King Road Standards will be feasible for either proposal. If you have any questions, regarding the additional information or the submittal deadline, please call me at (206) 296-7167. im Jaussen, Project Manager Ill urrent Planning Section enc Cc: Barghausen Consulting Engineers Bruce Whittaker, Senior Engineer, Engineering Review Section, LUSD Kris Langley, Senior Engineer, Traffic & Engineering Section, KCDOT Application Files -L04P0002 & L04P0027 ® King County Department of Development and Environmental Services 900 Oakesdale Avenue SW Renton, WA 98055-1219 December 13, 2004 Charles Spaeth Soos Creek LLC 6839 Ravenna Avenue Northeast Seattle, WA98115 RE: Notice of Complete Application for Application Time Periods Application No. L04P0002 -Soos Creek Plat Date Filed: February 4, 2004 Dear Mr. Spaeth: The purpose of this letter is to notify you that on October 1, 2004, the Land Use Services Division determined that the above-referenced application is complete under current requirements for a complete application. This initial determination is intended only for the purpose of applying the time periods for permit processing specified in King County Code. Supplemental information may be requested by the Division, as necessary, for the continued review of your application. Our goal is to process your application within 150 days. However, the complexity and level of analysis required to review your project and available staff resources will affect the actual review time. The timeline can also be impacted by one or more of the following: • any request made by the Division for additional information • changes or revisions requested by the applicant • mutually-agreed-upon requests to stop the time clock • preparation of an Environmental Impact Statement • failure to post the property • resolution of land use decisions appeals If you have any questions about your application or the posting requirements, please call me at (206) 296-7167. ~~~Ill Current Planning Section cc: Rick Boston Taylor Engineering Consultants Lisa Dinsmore, Supervisor, Current Planning Section, LUSD Bruce Whittaker, Sr. Engineer, Engineering Review Section, LUSD Application File Charles Spaeth From: Sent: To: Cc: Subject: December 8, 2004 Charles Spaeth [cshaffercorp@att.net] Wednesday, December 08, 2004 11 :20 AM kimberly.claussen@metrokc.gov; nick.gillen@metrokc; larry.west@metrokc; bruce whittaker@metrokc lisa.dinsmore@metrokc.gov; stephanie.warden@metrokc; jim.sanders@metrokc; steve.bottheim@metrokc Soos Creek Application; L04P0002 To: Kimberly Claussen, Nick Gillen, Larry West, Bruce Whittaker CC, Lisa Dinsmore, Stephanie Warden, Jim Sanders, Steve Bottheim From: Charles Spaeth, (Soos Creek Real Estate LLC) Re: Project Application No. L04P0002 This correspondence shall serve to notify DOES Staff (and their supervisors) who have been involved in the review of the above referenced project that this plat application became "complete" (per Section 20.20.050.C. of the King County Code) on October I, 2004. History of Application: --The application for this plat was originally filed February 4, 2004 by Rick Boston of Boston Design and Development LLC. --February 27, 2004: Kim Claussen issued a "Notice oflncomplete Action" to Mr. Boston requesting additional information. --March 17, 2004: Kim Claussen issued a "Notice of Request for Additional Information or Studies" to Mr. Boston. --Early June, 2004: Mr. Boston requested in writing an extension for the submittal of the additional information which Kim Claussen granted. The extension set the new date for submittal of additional information at September 21, 2004. --July 8, 2004: Soos Creek Real Estate LLC purchased the project from Boston Design and Development LLC. --September 16, 2004: Charles Spaeth and John Minden as Soos Creek Real Estate LLC filed a "Certification of Applicant Status" report declaring that Soos Creek Real Estate LLC was now the applicant of record. --September 16, 2004: an extensive package of information compiled by civil engineer William Taylor ofTEC addressing all issues raised in Kim Claussen's March 17th "Notice of Request for Additional Information or Studies" was submitted to Ms. Claussen. --October 1, 2004: As per Section 20.20.050 the application became complete --December 8, 2004: (82 days following the submission of additional information on September 16th) the Applicant has yet to receive a "A Notice of Request for Additional Information", nor a notification specifying that the application is complete. I request that DDES staff let the applicant know as soon as possible what additional information 1 ' they may need so as not to further delay the review of this application. Respectfully Submitted: Soos Creek Real Estate LLC By: Charles Spaeth, Managing Member cshaffercorp@att.net 206-526-8481 (}~? ~ 2 • f I ~~FER 'LJRPORA'i 'ION 1111111·111 ·1111 11111'/f ~ -=-.........---• ~=:~l:.a~~n~: ~~e. NE s~I 700 4 1350 0003 5978 6/185 9264 98055 Bruce Wittaker Land Use Services Division DOES 900 Oakesdale Ave. SW Renton, WA 98055-1219 g5:--· x· =:,' t:_7 .,_.. ,,-c; r C. ---~> ~, -..:· ' -I!~ -~--~-~····-~----~.~~- $2.67 00098582-47 ·:t8GSS+ i:2 i ·3 11,111i, ,I, II,,, ,I,/,, I, J, I .. 11.' /,/,' ,I /1, /,,/,I, I J, /"'' I, II soc Page 1 of I Whittaker, Bruce From: West, Larry Sent: Monday, December 13, 2004 11:47 AM To: Claussen, Kimberly Cc: Whittaker, Bruce; West, Larry Subject: L04P0002, Soos Creek Plat Kim: The following are some suggested geotechnical comments for this project: Geotechnical Study: Provide an additional geotechnical study prepared and stamped by a qualified geotechnical engineer and/or an engineering geologist who is licensed in the State of Washington. The study should include enough subsurface information regarding ground water and soil conditions to perform a slope stability analysis. Is the site underlain by a significant layer of in place till as indicated in the previous geotechnical report for this project or could there be some ice marginal deposits similar to those that appear to underlie landslides to the south along Soos Creek? It may be necessary to drill one or more deep borings in order to obtain the soil {type and strength) and groundwater conditions necessary to be able to perform this slope stability evaluation. In addition, the study report should provide recommendations related to the construction of the roads, lots, rockeries, retaining walls and the detention/infiltration pond. Please contact Larry West at 206 296-7131 if you have any questions regarding this request. 12/13/2004 Whittaker, Bruce To: Cc: Subject: Kim 1 Claussen, Kimberly Langley, Kristen RE: Soos Creek -L04P0002 Here are my comments. I wanted to also enclose Steves comments to the applicant. Kris: Big issues? Length of cul-d-sac variance? Stub to north? Access road(subaccess) won't fit in 30 foot easement? Letter of intent is for 30 feet conversion to public R/W Sidewalk extension to SE 192nd St along access road? We should discuss this some. SoosCreekReScr.do Soos Creek Plat c (55 KB) L04P0002.rtf ( ... Thanks, Bruce Whittaker -----Original Message----- From: Claussen, Kimberly Sent: Thursday, December 09, 2004 2:29 PM To: Whittaker, Bruce; Gillen, Nick; West, Larry; Langley, Kristen; Ballweber, Jim Subject: Soos Creek -L04P0002 Attached is a second request for addtl. Info --please return any edits by Dec. 13th. Thanks « File: 104p0002trns2.doc » I ® King County Department of Development and Environmental Services Land Use Services Division 900 Oakesdale A venue Southwest Renton, Washington 98055-1219 Plat Screening Transmittal Preliminary Plat Application of Soos Creek LUSD File No. L04P0002 Date of Information Request: December 13, 2004 Deadline for Submittal of Information: March 14, 2004 Please provide ten (10) copies of the following, unless otherwise noted. Note, the following items are in addition to the information requested for complete application (see February 27, 2004 letter). Utilities/Sewer Line: The proposed construction of sewer line(s) through the wetland is not a permitted alteration under KCC 21A.24. Provide an alternative route or method of construction (i.e. boring) or submit for a reasonable use exception application (RUE) if this is proposed to be constructed by the developer or a PAUE if construction proposed by the utility district Wetland Mitigation Plan: Submit a plan prepared by a qualified biologist which identifies proposed buffer mitigation. Geotechnical Study: Provide a geotechnical study prepared and stamped by a qualified geotechnical engineer, which evaluates the areas of slopes that are 40% or greater and exceed 20 feet in height as these areas will be required to be placed in sensitive area tract(s). In addition, the report shall provide recommendations regarding the buffers, building setback lines (bsbl) as well as recommendations related to the construction of the roads, lots and as necessary, the drainage facilities. The study should also provide a stability evaluation of the entire slope underlying the plat. It may be necessary to drill one or more deep borings in order to obtain the soil (type and strength) and groundwater conditions necessary to be able to perform this evaluation. The study must also address whether or not the proposed storm water infiltration can be accomplished and if so, can it be done without destabilizing any portion of the slope. Conceptual Grading Plan: Provide a conceptual grading plan for the lots and roads and indicate areas of rockeries and/or proposed retaining walls and preliminary heights. Note, depending upon the height of proposed rockeries and walls, additional setbacks and/or review may be necessary. Drainage: The following information must be prepared and stamped by a civil engineer licensed in the State of Washington. • Submit a geotechnical study performed by a geotechnical consultant which evaluates the feasibility of infiltration on the site. This study should include depth to seasonal high ground water through the winter season. Other options should be evaluated to determine if feasible (i.e. conventional stormwater detention). The Department is concerned that the proposed infiltration facility will not perform as indicated. Please address these concerns(see attached 9/28/2004 comments from Steve Foley). Infiltration tests were apparently not taken where the infiltration facility is proposed. The stormwater facility should be designed with the appropriate safety factor and infiltration feasibility testing per the KCSWDM. The conceptual drainage plan should be revised to incorporate any proposed revisions. • A surface water adjustment from Core Requirement 1 is required to combine the onsite and access road subbasins The site is within a split Level 2/Level 1 Flow Control area per the KCSWDM. If the proposed conceptual drainage plan reflects only Level 1 Flow Control, this aspect should be added to the adjustment request. • Offsite upstream drainage enters the site along the west boundary. Include a mapping of the onsite subbasins and upstream offsite area tributary to the site. (per Section 2.3.1.1 of the KCSWDM Task 1). Please revise the conceptual drainage plan to address the offsite flow, and provide provisions for conveyance and bypass of the offsite flows. Roads: Soos Creek Plat -L04P0002 12104 • • Please provide a Level One traffic impact analysis, prepared by a licensed engineer with expertise in traffic engineering, that expands the limited scope traffic analysis (turn lane and sight distance) assessment previously submitted. • Provide a conceptual (to scale) intersection improvement plan for the intersection of 1241" Ave SE/SE 192nd Street, based upon an actual survey of pavement edges, proposed curb lines, channelization, etc. Demonstrate alignment of the proposed improvements with the existing improvements to the south on 1241 " Ave SE (b) provide a conceptual revision of either the north or south leg to eliminate any offset, or (c) apply for and receive a variance to the KCRS for the construction centerline to construction centerline offset. • Revise the plat plan to eliminate the angle point in the horizontal alignment of the proposed plat street and substitute a "low speed" horizontal curve per the KCRS. The revision may result in other modifications and comments to the plat. This appears, at least, to result in the P.A.T.'s exceeding the +/-5 degree criteria for centerline angle of perpendicularity. • Provide a preliminary centerline profile for the proposed plat street, west of 124th Ave SE • Provide additional information, specifically curve data, for the centerline alignment of the overall plat street system: 1241" Ave SE extension and SE 191" Ct. Significant Trees-S0-220: Provide a conceptual retention/replacement plan which addresses S0-220/KCC 21A.38.230 -Significant Trees Revised Preliminary Plat: Provide 25 copies of a revised preliminary plat, as necessary, as a result of above- referenced requests for additional information as well as number all lots and provide clear delineation between property lines, lot lines, tracts, right-of-way, etc. As a result of the review of the information, additional information (studies, revisions, etc.) may be requested at a later date. Further evaluation of these issues may result in the reconfiguration and/or loss of lots. Soos Creek Plat -L04P0002 12/04 ® Surface Water Design Manual King County Requirements / Standards Department of Development and Environmental Services 900 Oakesdale Avenue Southwest. Adjustment* Request R.nton, Washington 980S5-1219 Project Name: fi eu..vc de .s \lo i le S p I a.+-DOES Project File No.: LJ)'/ !-'0002 LD5SOO'i0 DOES Engineer/Planner Name: , AND Co.'illu Shorr Pia..+ 8ru.ce \Jii Ha.keir 1 Cna.d -r, bb;-1-5 Project Address: 122-1 ~ <;c;: iqz..v.l St. Design Engineer: Phone: I~ · '' 1A l-.0,11<1.--r;;:vlor L/2S-?,"1 /-ILJ I~ AppUcanVAgent Phone: Signature: ~ Date: -.3}2tlo& Signature: Date: Engineering F.,,-,, N~ne: -rE:(_. ' I 11. C ' Address: City, S-. Zip Code: Address: /Po City, S-. Zip Code: . 20S" h'Orrl-S+ f. is n~ 7, l sSa.7yaA, W1 . -- INSTRUCTIONS TO APPLICANT/DESIGN ENGINEER: Please be sure to Include all plans (T.1.R., W available), sketches, photos and maps that may assist in complete review and consideration of this adjustment request Failure to provide all pertinent Information may result In delayed processing or denial of your request Please submit two complffle copies of this request appl!catlgn form and applicable fee to the ODES Intake Counter, at 900 Oakesdale Avenue Southwest, Renton, Washington 9805S-1219. For additional information, phone Randall Patsons, P.E .. at (206) 296-n07. DESCRIPTION OF ADJUSTMENT REQUEST: ~ Standard O Complex O Experimental D Blanket D Pre-application .,.. LL h ,-1 "'e e C<,,'CT"-C ,e U\ APPLICABLE VERSION KCSWDM: 01990 (11/95)' 9(1998 (9/98) )a ZOQS • (Note: the term "variance" replaced by "adjustmenr) APPLICABLE SECTION(S) OF STANDARDS: /I Lo•e Co-re JUSTIFICATION PER KCSWDM SECTION 1.4.2 ~ See attachments listed below. AUTHORIZATION SIGNATURES: DETERMINATION: [J Approval [J Conditional Approval (see below) [J Denial [J DNRIWLRD Approval Signed: Dete: _____ (Experimental & Blanket variances only) ODES Staff Recommendation Signed: Date: Conditions of Approval: [J See attached Memo Deted: DOES OIRECTOR/DESIGNEE: DOES, Land Use Services Div., EngtnHnng Review Supervisor: DOES, Bldg. Serv_ Div., Sito EnglnHnng & Planning Signed: Date: Fj9/BRS/SWDH~AOJ ,dOQ F96/BRS/SNOMR-S.epy22 .doc Supervisor: Signed: Osle: c c C '2 C\ I ' ' Following are 3 standard adjustments required for the proposed drainage detention system proposed for the Fleuve des Voiles Plat Application #L04P0002 and Cogger Short Plat Application #L05S0040. I. Standard adjustment to 2005 Manual Core Requirement #1, Discharge at the Natural Location. The project proposes to discharge project runoff to the Soos Creek wetland slightly north (upstream) of the natural location. It is impossible to retain the existing sheet flow discharge condition along the entire east property line and still comply with Core Requirement #3, Flow Control. Additionally, this scenario is preferable is preferable because strict compliance with Core Requirement # I would result in discharge to the neighboring backyards creating an unacceptable situation for the adjacent property owners. 2. Standard adjustment to 2005 Manual Core Requirement #3, Flow Control. The project proposes to use Level I detention criteria for the entire site. The project site contains both Level 2 and Level 1 detention areas. The upper hillside portions are subject to Level 2 detention requirements and the lower portions to Level 1. In lieu of Level 2 detention, the project proposes to tightline all runoff from the upper hillside down to a Level 1 detention pond at the base of the hill in the level 1 detention area. This will meet and exceed the intent of the code by removing all runoff from the erosion sensitive hillside as opposed to a controlled release as strict adherence to the code would require. 3. Standard adjustment to 2005 Manual Core Requirement #3, Flow Control. These projects propose to detain and treat runoff in a single facility located in the Fleuve des Voiles Plat property, subject to approval of a Shared Facility Plan. A shared facility will reduce the number of drainage facilities that King County will need to maintain. The two projects are adjacent and share all access and utilities. Combining stormwater is a logical extension of this concept. Note on all aqjustment requests: The Fleuve des Voiles Plat is vested under the 1998 KCSWDM and the Cogger Plat must comply with the 2005 KCSWDM The existing site runoff calculations used for sizing the detention system comply with the 2005 Manual requirements for Cogger and the 1998 Manual requirements for Fleuve des Voiles. This means that the Cogger Short Plat area was modeled as fully forested for the existing conditions. The pond itself complies with the requirements of 2005 KCSWDM * * ® King County Department of D&volopment and Environmental Servtcn Land Use Servlce.S Division Road Standards Variance Request to the County Road Engineer 900 Oakesdale Avenue Southwest Renton, WashfngtOn 96()55.1219 206-296-6600 TTY 206-296-7217 Project Name: Fleuve des Voiles Plat Project Address and Parcel Number Alternative formats available upon request DOES File No. L04P0002 * See Below p City, State Zip: DOES Engineer Initials: un. INSTRUCTIONS TO APPLICANT/DESIGN ENGINEER: Please be sure to include all plans, sketches, photos and maps which may assist In complete review and consideration of your variance request. For a complete Hst of road variance submittal requirements, refer to separete list from DOES. Failure to provide all pertinant information may result in delayed processing or danial of request. Please subm~ this request and appHcable tee to the Department of Development and Environmental Services, Building or Land Use Services Intake Counters, at 900 Oakesdale Avenue Southwest, Renton, WA 98055-1219. To make an appointment for permit submittal, please call 206·296-67'97. For more information see htto://www.metrokc.aovlddes/. REFER TO SECTION 1.08 OF THE KING COUNTY ROAD STANDARDS FOR VARIANCES DESCRIPTION OF VARIANCE REQUEST: Intersection offset; and private access tract turnarounds APPLICABLE SECTION(S) OF STANDARDS: KCRS 2.lOB, 2.08, and 2.09B JUSTIFICATION (see ettachments, pages 2 lo ~9"-__,),JUSTIFICATION/ to Craig ™t Cogger Short Plat: 12212 SE 192nd St. (attached) 6199000241 Fleuve des Voiles Plat: 12216 SE 192nd St: 6199000220/6199000240/6199000260 AUTHORIZATION SIGNATURES· ODES STAFF RECOMMENDATION DEPARTMENT OF TRANSPORATION AUTHORIZATION r 1 ......... revel r 1 Conditioned A--rova1 r 1 Denied County Oeeign Engineer Date Development EnglneerJDesignee: Date County Road Engineer Date CONDITIONS OF APPROVAL: Check out the DDES web site at www.metrokc.gov/ddes Road& standardl Variance Reque,,st to the County Road Englnaer 19-rqu.rdVM.pdf 05l29I03 Page1 of1 /.t)l/PeJoD~ <( to5S()o'/CJ · 1 William Popp Associates Transportation Engineers/Planners March 27, 2006 To: Craig Comfort King County Road Engineer KCLSD c/o: Charles Spaeth From: William Popp, Jr. William Popp Associates Senior Transportation Engineer Subject: Justification (425) 401-1030 FAX (425) 401-2125 e-mail: info@wmpoppassoc.com -Fleuve Des Voiles; KC LUSD File No. L04P0002 -Cogger Short Plat; KC LUSD File No. LOSS0040 Re: Road Standards Variance Request: Intersection Offset, Private Access Tract Turnarounds As requested by King County in their comments review memo dated January 5, 2006, and as it pertains to Traffic/Roads, we have prepared a road variance request for the following two issues: A. Proposed Turnarounds on Private Access Tracts B. Intersection Alignment Each is discussed below. A. Propos~ Turnarounds on Private Access Tracts There are two private access tracts proposed in the Fleuve Des Voiles project (122nd Court SE and 123'd Place SE) and one in the Cogger Short Plat project (122"d Pl SE). All of these access tracts are less than the County standard minimum requirement of 150 feet . in length from the intersection street centerline, and furthermore, all of the tracts serve 6 14-400 Building, Suite 206, 14400 Bel-Red Road, Bellevue, WA 98007 Craig Comfort; KC DDES Fleuve Des V oilcs and Cogger Short Plat Variance Page 2 March 27, 2006 or fewer lots. Therefore, per the King County Road Standards (KCRS), these tracts do not require any tum around provisions. However, the Fleuve Des Voiles project and the Cogger Short Plat project are proposing small cul-de sacs at the end of each tract to facilitate turnaround maneuvers as well as provide a more pleasing amenity rather than simply squaring off the asphalt to terminate the tracts, which would be an acceptable option per KCRS. Since the small cul-de-sac proposal is less than the minimum cul-de-sac radius of 40 feet required by KCRS, the County is requiring that a deviation from the standard radius be applied for through the Road Variance process. The private access tracts are shown in Attachment I. Included herein are points that should be considered in allowing for the substandard cul- de-sac design: I. Since these access tracts serve 6 or fewer lots and are less than 150 feet from the intersection street centerline, no turnaround measures are required. A small cul- de-sac (substandard to KCRS cul-de-sac design) is proposed at the end of each private access tract that would facilitate turnaround maneuvers. 2. A vehicle turnaround, though not as large as the KCRS standard, is an improvement compared to the alternative of providing no tum-around. 3. The small cul-de-sac design would be a useful enhancement of the tract. 4. These three streets are all private access tracts, thus the non-standard condition will not be located in a public roadway. Based on the information presented above, it is requested that the small cul-de-sac design as proposed be approved versus the squared-off asphalt option. B. Intersection Alignment (SE 19200 St/124th Ave SE) The project's proposed access is at the north leg of the SE 192nd St/124'h Ave SE intersection. Due to R/W conflicts on the east side of the access with the King County Parks Department, the proposed access (north leg) is offset 12 feet to the west from the 124th Ave SE (south leg). Per the County comments, this offset alignment will require approval through the Road Variance process. The variance is in reference to Section 2.10 of the KCRS which discusses spacing between intersections. Included herein are points that should be considered in approving the offset intersection design: .3 .. Craig Comfort; KC DDES Fleuve Des Voiles and Cogger Short Plat Variance Page 3 March 27, 2006 1. The north leg R/W is 30' and aligns with the west half R/W on the south leg. Were the north leg R/W ever to expand to 60 feet, the south leg R/W centerline would align with the north leg R/W centerline. 2. During the PM peak hour, the southbound left tum volume is estimated to be only 8 vehicles, which equates to an average vehicle headway of approximately 7 .5 minutes between vehicles. Likewise, the northbound left tum volume is estimated to be only 17 vehicles, which equates to an average vehicle headway of approximately 3.5 minutes. Assuming the intersection is signalized in the near term (within 2 to 3 years), and assuming a 90 second cycle length, it is estimated that there would only be between three and four instances where the SB left turn would be turning in conjunction with the northbound left tum out of 40 signal cycles during the peak hour. The same conclusion can be made for the AM peak hour as it is estimated there will be only 9 SB vehicles and only 10 NB vehicles. 3. Attachment 2 shows two opposing northbound-southbound left turns under the existing intersection configuration with the proposed north leg. As shown, the left turns can turn simultaneously without major conflict. The tum paths were based on a P Design Vehicle (Passenger Vehicle). The left turning vehicles as shown tum along a 42 foot centerline radius. 4. The County is proposing to improve SE 192" St and this intersection as part of ClP 401004. SE 192"" St will be widened to a 3-Iane section through this intersection, therefore, the north-south intersection offset with the north leg construction will improve the ability for north and south opposing left turning vehicles due to the fact the separation distance between the two stop bars is greater. The north leg stop bar is estimated to shift north approximately 7 feet as can be measured on the plan. However, the ultimate separation distance would be based on the final location of the each stop bar. 5. Attachment 3 shows two opposing northbound-southbound left turns under the proposed County improved intersection per ClP 401004 with the proposed north leg. As shown here as well, the left turns can tum simultaneously without major conflict. Again, the tum paths were based on a P Design Vehicle (Passenger Vehicle). The left turning vehicles as shown turn along a 50 foot centerline radius. 6. The alignment for northbound and southbound vehicles heading through the intersection will have to travel through a short transition section, transitioning approximately 9 feet over a length of 80 feet approximately. It is assumed the vehicle would begin transition closest to the centerline and end transition closer to the fog line or curb. Under the existing intersection control, these vehicles will be starting fr\)m stop, hence they will not be traversing through the intersection at any significant speed, at most 15 mph at the opposite side. Based on the transition taper formula, D=W*S'/60 [where D=transition taper distance (ft), W=width of Craig Comfort; KC DDES Fleuve Des Voiles and Cogger Shon Plat Variance Page4 March 27, 2006 taper (ft), and Sc:speed (mph), appropriate where S :'5 40mph], this transition through the intersection would be suitable for speeds of close to 23 mph. This would be suitable for the future condition where the intersection is signalized and would account for those vehicles that would pass through the intersection on the green ball indication. As an interim mitigation measure, it is suggested that the northeast comer of the intersection be flared to soften the transition through the intersection northbound. See Attachment 4. This flared comer would consist of a 25 foot radius and 50 foot taper consisting of asphalt with a thickened edge. Based on the information presented above, it is requested that the 12-foot intersection offset be approved as shown. It should be reiterated that if the north leg R/W were ever expanded to 60 feet the offset configuration would be eliminated. Please contact me at ( 425) 401-2124 or bpoppjr@wmpoppassoc.com if you have any questions. Thank you. Attachments: Attachment I -Site plan showing 123"' Pl SE, 122"' Court SE, and 12200 Pl SE cul-de-sacs Attachment 2 -P-vehicle tum path with existing intersection configuration Attachment 3 -P-vehicle tum path with County improved intersection configuration Attachment 4 -widened NE comer proposal ' -r~) I' /: i lg ' 1~ 60 39 64 59' 31 54' ' 134.24' 744' c,; 24' 84.0G .::;r I 1 );.: ""~~ 84.00' 85 •16 o. 97.09' 7-1 74 ~ ~ 4· G~APHIC &C~l~ " 50 100 61 47" 51.47' ill 13 o:,,t'f; ·('".,,--. I ,, I ;!t' -·---:.-·!·-o 1s· !~ a '· ;g !' !g • I-< .J a. l-a: 0 :,: "' a: w "' "' 0 <.) Cl w "' 0 a. 0 a: a. 555J 13.49 15 45' "5 35' 10. rz so_68 , 79.54' 77.88' 57 62 ~-;·sii---~- FUTURE REC4_31 23.n' ' I 0 g1 ;:,:I 0 I I ' ]59.25 I I 60.82' J4.89' 62.30 65.12' 73. 12 71.2E" 2J.19 53.86 g 51.67' 86 56' ;,,. \ ,, \ ;:,·1 16.70 • /.-"' /o 61.02' 10.37' 24.30' t .,,1c· 11.20' ,, s,."] ~I ,, ,.J CUL-DE-SAC VARIANCE Private Access Tract Turnarounds Attachment 1 ~ ---i ------ :i --~ --~ I I --.. .. o 11 ~ I / ----Proposed Centerline 124th Ave NE (north leg) fil i r· ~.-/-ExlstingRM'{futurecenterfine) 'a 0.. ' I ~: I I I I 01 I ~: _, 14' -i -" 1 I I U-I I " I 311 . I k .. -·-·d· &. • ------;--·-----ex1st1ng Qrav ... nveway £ j 11 i~ -~:-···· .-.. ----------------------\. - • 11 . , r ~/, 1 ' .,,I I~ ,.:-i;'L--~---J ... .. ~.. ··1 ' .......... -...... 0 ~d ... , , I ... ------~=--L() ... __ ,,,,. -------------------~---------- -------------------. i__l~·-:~... ~ Fog Line -.,,~,--:-:-~5-~-~-:-· -:.-:-."'-1c1e_,_-+1- . I I . ----··-· --....... ·. I ;;:,"""'. 1 f !Y~~~! I -·-·------------ 1--· 0 --------Fog line----------------- ----------------------1 25 North GRAPHIC SCALE 50 {IN FEET) "'"'" --~ 100 I ~ Ui ~ ,~ s i I~ I~ 'I ,Ij Fog Line ---' b C') SE 192nd St t ,-------------------- w: en I a.> ' >· <( I .r::::. ' .......... "'1" I N, ~. INTERSECTION OFFSET VARIANCE Existing Intersection Geometry with Proposed Access Attachment 2 Xl ----- ,--r----- 1 P-vehicle --------L-~1 -·-- North GRAPHIC SCALE 0 25 50 {INFEET) 11nch .. --II. -- ~-- ------, --= I I B r---24' ----- " I I < /'_T _____ Proposed Center1ine 124th Ave NE (north leg) j : r--· ~-~-------Existhg RlW(futurecenterline) ~ ; ' I m ' --1 I ~ : • .!! I > I .!.! , I .c I .£ I ~ I II ~ 1 I d. I 1 11 __ _.--;e-----existing gram driveway $I ,t I_,-- 8_ I H ' ,' ~ i I ,_,-;L -r-__________________ .. ____ _ ~ I ' ' I ' I 11 ,, / I 1 ! 1\ I 'i /, \_ .,L---\-~,.:..' --+--..... -= ---· -- ' --..__ 1 Fog une,------tf;..------ . . I 1_2',..1 , -r --. I I : ' ' .'•, -, .. 1·.--. ' . ' -, ' ·. I Ju~lJiu s. ! / J II. I ~ I j_ -- _:,,.._~ r ,,__ --------····- Fog Line l L .~ .... -1 --r--"I ~~ 0 (") 1 SE 192nd St ______ t_ ___ _ UJ. Cf)• ©I >' <(' ..c:! +-', ~I T"""• INTERSECTION OFFSET VARIANCE Improved Intersection Geometry County GIP 401004 with Proposed Access 100 I--·-30' '--· 30' ---1 Attachment 3 • 0 ~ ----- FOG LINE - I. 1'' . ' I $0, k---....::::]" +-.-·--{,.::- 1 I : I , __J -'I --;2 f-: ---I 1-=t-· ·1------I ~ --II I I j 1 .,-----t--PROPOSED CENTERLINE 124TH AVE SE, NORTH EXTENSION I II . e"". [, ..... ':'--EXISTING EAST EDGE RIW (FUTURE CENTERLINE) I !i 11 /_: ___ existing gravel driveway , . .-...... ~· I _,_ --------------------------. I ' R=25 ' --12' PROPOSED CENTERLINE OFFSET (REQUIRES ROAD STANDARDS VARIACE) ---._.:::·'~ -~-----------------.--·1-~ C-' ---1 existing EP ·----~-----··----FOG LINE --~---------- SE 192ND ST ________ ___.E_O-,,aGul~IN~E~----------------...........,,, _,...,----------------~-n ,--/ ~---------· ==FOG==Ll'!!NE=====---~ ----------------- 25 North GRAPHIC SCALE 50 (INFeET) """·--~ I I \ ' ' ' '1 i 100: / 11 I Ii I! t J _I w (/) ~JO D, , --~-~- :c---=:JJ ,11 !ij·---ex1rrNG PENTERLINE 124TH AVE. SE 1: I 1--J .---- 1 I /I ~ Ii INTERSECTION OFFSET VARIANCE <( i, I 1- ...;j'" ~I Proposed Driveway Flare NE Comer 25' Radius and 50' Taper Attachment 4 • '.nfr•.;~:.~·I ,~,·:; ::.· : a ,., ''. ,. '"'! : : : : : . : =-~-.r~ TEC Project No. 294-JMA Taylor Engineering Consultants PRELIMINARY TECHNICAL INFORMATION REPORT for Ffeuve des Voiles and Cogger Plats King County Tax Parcel Nos. 619900-0220, -0240, 0241, & -0260 Subdivision File # A03P0286 LSUD File # L04P0002 Site Address: 12216 SE 192"d Street Renton, Washington Prepared by: Lorna M. Taylor, P.E. Date: September 15, 2004 Revised: March 29, 2006 205 Front St. S • P 0. Box 1787 • Issaquah, WA 98027-0073 • tel. (425) 391-1415 • fax (425) 391-1551 • www.teccivil.com LtJI/~ Preliminary Technical Information Report Fleuve des Voiles Plat & Cogger Short Plat Section 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. Appendices Appendix A: Appendix 8: Appendix 8-1 : Appendix C: Appendix D: Appendix E: TABLE OF CONTENTS Description Project Overview ......................................... . Conditions and Requirements Summary .......... . Off-Site Analysis ......................................... . Flow Control and Water Quality Facility Analysis and Design ................................................... . Conveyance System Analysis and Design ....... . Special Reports and Studies ......................... . Other Permits ............................................. . ESC Analysis and Design ............................. . Bond Quantities, Facility Summaries, and Declaration of Covenant.. ............................. . Operations and Maintenance Manual .............. . Figures Page Number 1 1 3 4 5 5 6 6 6 6 1. Technical Information Report (TIR) Worksheet 2. Site Location 3. Drainage Basins, Subbasins, & Site Characteristics 4. SGS Soils Map Off-site Analysis Drainage System Table and Map Drainage Complaint Analysis (previously submitted) Analysis and Design Maintenance Requirements for Privately Maintained Drainage Facilities -not included in this preliminary report Bond Quantities Worksheet -not included in this preliminary report Retention/Detention Facility Summary Sheet and Sketch Declaration of Covenant -not included in this preliminary report TEC Preliminary Technical Information Report Fleuve des Voiles Plat & Cogger Short Plat SECTION 1 PROJECT OVERVIEW This Technical Information Report is submitted to the King County DOES in accordance with the King County Surface Water Design Manual (KCSWDM). A Level 1 Technical Design and Information Report for Preliminary Plat Review, dated January 26, 2004, was previously submitted for the Fleuve des Voiles site; and portions of that previous report are referenced herein; however, the proposed plat has been significantly changed and this TIR addresses the currently proposed plat layout. The Fleuve des Voiles plat was submitted as the "Soos Creek Plat" on September 15, 2004 and is subject to full compliance with the 1998 KDSWDM. That plat layout has been modified and the drainage facilities re-sized to accommodate the revised layout and the additional adjacent Cogger Short Plat which is subject to full compliance with the 2005 KDSWDM. This TIR addresses the development of both plat areas and the requirements of each version of the manual or approved adjustments. A Surface Water Design Manual Requirements/Standards Adjustment Request has been prepared addressing three standard adjustments to Core Requirement #1 and #3. The 6.74-acre Fleuve des Voiles project site and 0.93-acre Cogger project site comprise 4 existing lots and are located at 12216 SE 192nd Street in Renton, Washington. The Fleuve des Voiles project proposes to subdivide three lots into 39 residential lots, and the Cogger project proposes to subdivide the fourth lot into 8 lots, providing the required infrastructure, including access roads, water and sanitary sewer service, storm runoff collection, conveyance, detention and treatment, and erosion control for each plat during construction. Appendix A contains a Technical Information Report (TIR) worksheet for the projects (Figure 1), as well as a Site Location Map (Figure 2), Drainage Basins, Subbasins, and Site Characteristics figures (Figure 3a -3e), and a Soils map (Figure 4). More detailed site information is included in Appendix C with the existing and developed site runoff model data. SECTION 2 CONDITIONS AND REQUIREMENTS SUMMARY The following summary describes how this new project will meet the eight "Core Requirements" and the "Special Requirements" that apply: Core Requirements 1. Discharge at the Natural Location: The sites currently slope, steeply in places, to the east and the Soos Creek wetlands. The southernmost portions of the Cogger Plat property drain east along the north edge of SE 192nd Street in an ill-defined swale. There are no well-defined drainage paths on the site, and runoff occurs in a dispersed manner. The project proposes to detain all runoff from the developed portions of the property and to bypass and disperse off-site flows, which should adequately mimic existing conditions. However, this will require a Standard adjustment to Core Requirement #1: It is impossible to retain the existing sheet flow discharge condition along the entire east property line and still comply with Core Requirement #3, Flow Control. Additionally, this scenario is preferable is preferable because strict compliance with Core Requirement #1 would result in discharge to the neighboring backyards creating an unacceptable situation for the adjacent property owners. TEC Preliminary Technical Information Report Fleuve des Voiles Plat & Cogger Short Plat 2. Off-Site Analysis: A Level 1 offsite analysis was conducted for these preliminary plats as described in Section 3. 3. Flow Control: Runoff from the sites will be controlled to meet the requirements of the KCSWDM in a combination detention and treatment pond. Discharges from the facility will be to a dispersion/energy dissipation facility. Two standard adjustments to Core Requirement #3 are required for this proposal: 1) The project proposes to use Level 1 detention criteria for the entire site. The project site contains both Level 2 and Level 1 detention areas. The upper hillside portions are subject to Level 2 detention requirements and the lower portions to Level 1. In lieu of Level 2 detention, the project proposes to tightline all runoff from the upper hillside down to a Level 1 detention pond at the base of the hill in the level 1 detention area. This will meet and exceed the intent of the code by removing all runoff from the erosion sensitive hillside as opposed to a controlled release as strict adherence to the code would require. Appendix C contains the KCRTS input and output. 2) These projects propose to detain and treat runoff in a single facility located in the Fleuve des Voiles Plat property, subject to approval of a Shared Facility Plan. A shared facility will reduce the number of drainage facilities that King County will need to maintain. The two projects are adjacent and share all access and utilities. Combining stormwater is a logical extension of this concept. 4. Conveyance System: The conveyance system will be sized to convey the 25-year storm without flooding and the performance during the predicted 100-year storm will be evaluated to ensure that significant flooding will not occur. (not included in this preliminary report) 5. Erosion and Sedimentation Control: Runoff from the grading and trenching construction areas will be contained by a temporary construction entrance, silt fencing and sediment traps/ponds in accordance with the KCSWDM during construction. The ESC facilities will only be removed once all exposed site surfaces have been stabilized. Other temporary erosion and sedimentation control measures will be installed as needed. (not included in this preliminary report) 6. Maintenance and Operations: The combination detention and treatment pond and cartridge filter treatment catch basins should be maintained as described in Appendix D, which includes the KCSWM Maintenance Requirements for Privately Maintained Drainage Facilities. (not included in this preliminary report) 7. Financial Guarantees and Liability: The bond quantities worksheet is included in Appendix E. (not included in this preliminary report) 8. Water Quality: Treatment of runoff from the 1241 h Avenue SE roadway will be provided in two cartridge filter treatment catch basins and the runoff from the remainder of the site will treated in the dead storage portions of the combination detention and treatment ponds, both of which were sized according to the KCSWDM for Basic Water Quality Treatment. Appendix C contains the calculations used to size the treatment facilities. Special Requirements 1. Other Adopted Area-Specific Requirements: Shared Facility Drainage Plans (SFDPs): These two projects propose to provide detention and treatment in a common facility located in the Fleuve des Voiles plat. The facility sizing took into account the differences in drainage manual requirements for the 2 TEC Preliminary Technical Information Report Fleuve des Voiles Plat & Cogger Short Plat two projects. The only impact this had on the design is that the Cogger Short Plat area was modeled as fully forested for it's existing condition. The site contains both Level 1 and Level 2 Flow Control areas per the KCSWDM, however the areas designated Level 2 are those located within the steep slope designations. Since the project proposes to bypass offsite flow and pipe onsite runoff to the base of the hill and the Level 1 area, Level 1 Flow Control is proposed. The detention facility is located at the base of the hill and will discharge via dispersion to a Level 1 Flow Control area. Appendix A contains King County mapping to support this. 2. Floodp/ain/Floodway Delineation: Not Applicable. 3. Flood Protection Facilities: Not Applicable. 4. Source Controls: Not Applicable. 5. Oil Control: Not Applicable. SECTION 3 OFF-SITE ANALYSIS The downstream drainage path was documented and the County's Drainage Complaints File was again solicited to make sure no additional pertinent drainage complaints have been lodged since the original Drainage Complaint Analysis, dated March 20, 2004, which was produced for the project by Jacques Consulting. Task 1. Study Area Definition and Maps The figures in Appendix B show the extent of the study area and the local topography. The Site Plan drawing shows more detailed topographic information on the project site. Task 2. Resource Review Agency mapping was reviewed and TEC contacted King County regarding documented drainage complaints in the vicinity. The SCS soils map identifies site soils in the proposed development area as Alderwood Gravelly Sandy Loam, 0 -6% slopes and 15 -30% slopes. Task 3. Field Inspection In accordance with the KCSWDM, the existing site and off-site drainage systems were inspected on June 15, 2004. Task 4. Drainage System Descriptions and Problem Descriptions There is only one report of a drainage problem in the immediate vicinity of the project. This complaint involved a plugged driveway culvert across 124'" Avenue SE at SE 19200 , and the problem has been corrected according to the previously submitted Drainage Complaint Analysis by Jacques Consulting, dated March 20, 2004 (see Appendix B-1). The County's drainage complaints file was solicited again more recently, and the results of this search are included in Appendix B. No additional pertinent drainage complaints have been logged in the interim. If the proposed drainage system were to fail, and the detention facility were to flood, the emergency overflow path for runoff would be into the adjacent Soos Creek wetlands. These wetlands feed Soos Creek, which flows south on the King County-owned property to the east of the project property. 3 TEC Preliminary Technical Information Report Fleuve des Voiles Plat & Cogger Short Plat Task 5. Mitigation of Existing or Potential Problems To mitigate any water quantity impacts from the project, detention of runoff is proposed meeting Level 1 flow control requirements in accordance with the King County Surface Water Design Manual (KCSWDM) and a Standards Adjustment Request. Water quality impacts will be addressed in two Basic Water Quality treatment facilities; a combination detention and treatment pond and two cartridge filter treatment catch basins. The pond will treat runoff from the site, and the cartridge filters will treat runoff from 1241 h Avenue SE. SECTION 4 FLOW CONTROL AND WATER QUALITY FACILITY ANALYSIS AND DESIGN The following subsections describe the measurements and criteria used to size the detention and treatment facilities. Existing Site Hydrology (Part A) The drainage on the existing site was analyzed for this project with KCRTS. Figures provided in the KCSWDM and KCRTS manual were used to determine project location and scale factor parameters. The figures in Appendix C show the delineation of the areas generating runoff on the site. The site soils are classified Alderwood Gravelly Sandy Loam, either O -6% or 15 - 30% slopes. Appendix C also contains the data and output from the existing site hydrologic analysis. The existing site conditions identified for this project and used in the KCRTS modeling included 6.97 acres of forest, 0.31 acres of impervious surfaces, and 0.39 acres of grass/landscaping. Developed Site Hydrology (Part B) The proposed drainage systems will route "site" runoff to a Level 1 detention pond which will route outflow to a dispersion/energy dissipation facility draining to the adjacent Soos Creek wetlands. Runoff from 124'" Avenue SE will be controlled as over-detention in the pond and will flow directly to treatment catch basins prior to dispersed discharge to Soos Creek north of SE 192"0 Street. The developed site conditions identified for this project and used in the KCRTS modeling included 5.06 acres of impervious surfaces, 2.27 acres of grass/landscaping, and an additional 0.34 acres of impervious surface on 124'" Avenue SE that will bypass the detention. Appendix C contains the data and output from the developed site hydrologic analysis. Performance Standards (Part C) The site contains both Level 1 and Level 2 Flow Control areas per the KCSWDM, however the areas designated Level 2 are those located within the steep slope designations. Since the project proposes to bypass offsite flow and pipe onsite runoff to the base of the hill and the Level 1 area, Level 1 Flow Control is proposed. The detention facility is located at the base of the hill and will discharge (via dispersion) to a Level 1 Flow Control area. Conveyance features will need to be sized to convey the 25-year developed runoff and their performance during the 100-year event should be checked to be sure that significant flooding would not occur as a result. Flow Control System (Part D) The detention pond was sized using the KCRTS routine. The following table summarizes the sizing requirements for the detention pond. 4 TEC Preliminary Technical Information Report Fleuve des Voiles Plat & Cogger Short Plat Detention Pond Requirements Required storage volume Effective storage depth Top area@ 1' freeboard Bottom area Orifice #1 diameter Orifice #2 diameter Orifice #2 height Pond 57,698 cf 4 ft 19,549 sf 11,288 sf 2.19" (2-3/16") 2.34" (2-5/16") 3.00 ft Descriptions of the procedures used and calculations and computer output are included in Appendix C. Water Quality (Part E) Runoff from the site will be treated in the dead storage portion of the combination detention and treatment facility, which was sized for Basic Water Quality Control. Runoff from 124'" Avenue SE will be treated in two cartridge filter treatment catch basins. The following table summarizes the sizing requirements for the treatment pond. Treatment Facilitv Site Pond 1241h Ave. SE Filters Required wetpool volume (Vb) 26,217 cf Wetpool depth 4 ft Top area 15,995 sf Q,._ 0.05 cfs Descriptions of the procedures used and calculations and computer output are included in AppendixC. SECTION 5 CONVEYANCE SYSTEM ANALYSIS AND DESIGN Not included in this preliminary report. SECTION 6 SPECIAL REPORTS AND STUDIES Several studies and reports were conducted and produced for this project and are available under separate cover as listed below. 1. Wetland Evaluation and Delineation Report prepared by H & S Consulting, dated May 13, 2004. 2. Traffic Impact Analysis prepared by William Popp Associates, "Draft" dated May 27, 2004. 3. Geotech Report prepared by GeoTrends, Inc., dated March 20, 2004. 4. Conceptual Buffer Mitigation Plan prepared by AC Roth Environmental Services, dated March 20, 2006. 5 TEC Preliminary Technical Information Report Fleuve des Voiles Plat & Cogger Short Plat SECTION 7 OTHER PERMITS No other permits beyond those required by King County are anticipated to be required for this project. SECTION 8 ESC ANALYSIS AND DESIGN Not included in this preliminary report. SECTION 9 BOND QUANTITIES, FACILITY SUMMARIES, AND DECLARATION OF COVENANT Bond Quantities: Not included in this preliminary report. Facility Summaries: The County's Facilities Summary Sheet is included in Appendix E. Declaration of Covenant: Not included in this preliminary report. SECTION 10 OPERATIONS AND MAINTENANCE MANUAL Not included in this preliminary report. 6 TEC APPENDIX A FIGURES 1. Technical Information Report (TIR) Worksheet 2. Site Location Map 3. Drainage Basins, Subbasins, & Site Characteristics 4. SCS Soils Map King County Department of Development and Environmental Services TECHNICAL INFORMATION REPORT (TIR) WORKSHEET Part 1 PROJECT OWNER AND PROJl:CT ENGINEER Phone 2{) 6 • (Zl, ~£'/fl Project EngiQeer · I -0rt1a Company_-'---"='--+-..!..!.-'~-'---.-=-- Address/Phone Part 2 PROJECT LOCATION AND DESCRIPTION P19iect Name l::feu ve der Voles f Cr.,1:3(',v-Pl:Jr. 0 Location 7 Township Z3 iJ Range f€ Section __,,3 ... ,_,j ___ _ OZ? ---~~LJJ..,l!:'.;;:~.,;::c=-,c:__c--'--{J.L;"--,' ~--.-. -.-... -. -.. -.-.~ .... ----~ .• -. -.-.. --. "'" .. ,.,"", f?art4 OTHER REVIEWS AND PER~l"fS .. .' )('.I Subdivison f I e.u.vt. J.,.., \lo;/,.. 5 ~ Short Subdivision Co'ne, D Grading D Commercial D Other ________ _ D DFW HPA O Shoreline Management D COE 404 D Rockery 0 DOE Dam Safety O Structural Vaults 0 FEMA Floodplain O Other D COE Wetlands ·:· ' .. . . ~ gads'. $!;,l,E G<il~~tJNffY AND DRAINAGE BASIN .'.', '. •, ".:.·.·.·:.::·.:c . '. Community Drainage Basin .. 0 River D Stream D Critical Stream Reach D Depressions/Swales D Lake Q'." Steep Slopes _ _,_i/0-=--_"I.::.., ____ _ D D D D D D . ··· .., ... ··• ... · ... Floodplain Wetlands Seeps/Springs High Groundwater Table Groundwater Recharge Other Figure 1 TIR Worksheet (3 pages) . ,.:' ... • Part7 SOILS •. Soil Type BJ!f Erosion Potential Erosive Velcoties ~ Additional Sheets Attached ~ (/e.<Jk l~ /?e;>~rf (,L~r .fafJv/ok (;),,.,;,- REFERENCE ~ Ch. 4 -Downstream Analysis D D D D D D Additional Sheets Attached MINIMUM ESC REQUIREMENTS DURING CONSTRUCTION 0"' Sedimentation Facilities 0' Stabilized Construction Entrance rf Perimeter Runoff Control P, Clearing and Graing Restrictions ef Cover Practices . ~ Construction Sequence 0 Other LIMITATION/SITE CONSTRAINT MINIMUM ESC REQUIREMENTS AFTER CONSTRUCTION S--Stabilize Exposed Surface i1"Remove and Restore Temporary ESC Facilities IT Clean and Remove All Silt and Debris G"' Ensure Operation of Permanent Facilities kl"'Flag Limits of SAO and open space preservation areas 0 other Part 10 SURFACE WATER SYSTEM LI Grass Lined D Tank D Infiltration Method of Analysis Channel D D Kc12r5 (,e,,.d 1. Vault Depression 0' Pipe System D Energy Dissapator D Flow Dispersal Compensation/Mitigati on of Eliminated Site D Open Channel D Wetland D Waiver Storage D Dry Pond D Stream D Regional ~Wet Pond Detention Brief Description of System Operation {i)'.'-t"--')-"-·"";k..__.--=='-'---/"-f""--'"---'--"'-'---'="'--'----"""'-'---1L...LL...Lf-'-'-"::""-'- I c.1, Facility Related Site Limitations Reference Facility .. --. Part 11 STRUCTURAL ANALYSIS ·. :.· .-' . D Cast in Place Vault ~Retaining Wall D Rockery > 4' High g-· Structural on Steep Slope D Other Part 12 EASEMENTS/TRACTS D Drainage Easement D Access Easement l,J" Native Growth Protection Easement D Tract D Other I or a civil engineer under my supervision my supervision have visited the site. Actual site conditions as observed were incorporated into this worksheet and the attachments. To the best of my knowledge the information provided here is accurate. . MapQuest: Maps: print Eli Send To Printer Back to Map I 12216 Se 192nd St ' Renton WA ' 98058-7526 us ' I Notes: I I ........ ,. .................................................................................... . I I All rights reserved. Use Subject to Ucense}Copyriqhl I ~p Legend This map is Informational onty. No representation Is made or warranty given as ti MapQuest and Its suppliers assume no responsibility for any loss or c Privacy Poticy & Legal Notices © 2004 MapQuest.com, Page 1 of 1 Figure 2 Site Location Map No Scale http://www.mapquest.com/maps/print.adp?mapdata=p5kqyoo6yZLyznAhGFxE2MBWwU ... 9/10/2004 . Map Output Page 1 of 1 ®King County lllm!IIII News C144Si44M Comments lll will Legend S<!ll!cmdPa"'°m t-$ and Lalqe Rive"' , _. County 9oond•,y .,/ .Stm.atnri , -·"' 61 ""'ll t.runty"""""'-""""' ~ _.,, 0 """"'"' .t'f ~ ;V T<>l!O Conn,..,. {!ifl;J f./ """' e information included on this map has been compiled by King County staff from a variety of sources and is subject to change without notice. King County makes no representations or warranties, express or implied, as to accuracy, completeness, timeliness, or rights to the use of such information. King County shall ot be liable for any general, special, indirect, incidental, or consequential damages including, but not limlted o, lost revenues or lost profits resulting from the use or misuse of the information contained on this map. sale of this or information on this ma is rohiMed exce t b written ermission of Kin Coun . King County I GIS Center I News I Services I Comments I Search By visiting this and other King County web pages, you expressly agree to be bound by tenns and conditions of the site. The details. Figure 3a Drainage Basins, Subbasins, & Site Characteristics Scale as shown http://wwwS.metrokc.gov/servlet/com.esri.esrimap.Esrimap?ServiceName=overview&Clie ... 9/10/2004 Map Output @King county • -O:n.1nty &·at'ldaty' I • -S.t:l'W.N pf H'4W;n,· ,. / N~~ (»,1· m:;,.,t [:] P.arCQ& t/ F\-$h and mt:h 1lAO s,,.am ~ C.~t ,c~ :2:P»:~n..t- ~ C~2Si«:1~ro .,v·· ~::3 ._ 4i#iii!¥M ! ' ' ' ' I ! Ill!:~\ i{ l><:~;:: ,A:'_);:_\\ ' \ Legend Ll:ktir.l1t. at'Kl l.atgi!'il Rii,~~ 'Stt~~~ fl)tyJ-w.-a.y 1:00 Yaar·Anooi:.,~m \/1/.i..RD Ch.~nnel Mgratki~·1 «a::ta:s'd A.ro;a$ m ~W;A~ lffll yz~m: ffl SAO Welland ~ SAO ui'1disld" ~ SAO Se!>,,,;c SAOE~n t.arui'S&itJ tt.aui:ro O:'~~ge Am.a Page I of 2 comments H#i&IW e information included on this map has been compiled by King County staff from a variety of sources and s subject to change wijhout notice. King County makes no represenlc mplied, as to accuracy, completeness, timeliness, or rights to the use ot be liable for any general, special, indirect, incidental, or conseque o, lost revenues or lost protns resulting from the use or misuse of the sale of this ma or information on this ma is rohibited exce t b· King County I GIS Center I News I Services I Co Figure 3b Drainage Basins, Subbasins, & Site Characteristics Scale as shown http://www5.metrokc.gov/servlet/com.esri.esrimap.Esrimap?ServiceName=overview&ClientV ... 9/15/2004 I ! I I --' ' ' ------~::~ I I L------_ _).--,---I . -, I A-.--- 1 i , __ _ i I i I ----·-----! ----j ____ _I t• h J i ff ;t; !J • ~ 1i.Jj1f l,il ·, ! I flli.:•!j1I •j f'"l '-' l !f H i11 @ j/l,iJ~'rl 1'· I f1, 0 lllh,hf ii, i -.. ----·-.L_ Figure 3c Drainage Basins, Subbasins, & Site Characteristics Scale as shown ~ ~ N 0 Cf) Cl. z 8w <:{ Cf) '-l I Figure 3d Drainage Basins, Subbasins, . I I · • & S. ite C. haracter. istics m · !11111111111 Scale as shown -----~-_____ -~-~----__ ---~--_11-lllffl!lllllilllll#!IIJJIJJLLI · -------·---~--~ r _J::~ t-~J--[ _J._ C ... Ill po s· (/) Ill CF) -· (Q O it ID 'Tl !!!. (") c:, -. ID ::r Ill (C "' Ill !!! . s:: en .., :, -, C/1 Ill C/1 ct> :; 0 • oitr.nw =: ::l. C: ct> ::, cn er ~ CT 0 Ill In In s· .<n A03P0287 HYDRO & GEO Topo C4 5 ~roo NF°"h ar>::1 011cri Oeta Said Ellgla N!Hl:5 Nrown:!hp u~ Wdalffl N11¥,Qr1< 9~ • '051.INE6 ~SECLINES ~WPUNES NStn,IJtei 11.;~m ~r ,',, u ::":.i:: SA0We!lw1,;l 0SAa~e m3~oeo.1~ !SJ SAO 5e($trk c:::J $AO !?to~ ,,_...., 1Di1J \NI.RD DnMnaQ41 C~'"U ' Pan;,l!)j,t 1,-.,.,J:o~ ,'''" ""'"' WDFW20R TRE.eS1 WD1'W2: OR TREES3 "'"'"'' FEM,,1,Crou Sl!lcilcr111 Fl::MA floodway FitMA 10()..yr Floodpl•lr c ... N0ryBO>Jnd;l(>e1 500 ,ooo 1.·~ 1J3J l'e-el @Kint Covnty 1500 ~~t I !ho ,,....,,..,..1,__ an VU /Tap r-..-.,, ~ I>) i ~~,.;;:·~"":.,":•~10 i --"°"''°'_ ........ _ ... '"""..,.__IO"'' I =~~c::=:.-:--~ir:.-:-.,Q( i ~l!IOICIM.--..1 .......... .,,__......-I ...... ,~OU1Alll/lr,aMID,--o,"'- ~-.1a.,.._r. .... ..,,..~<J11t-e~ i ~ _.._. ..... _ ,,,,, __ ltl.a-~ ' ·1 ...... ,,..,.~a!Ollll ... -~"'"'~i , . "'"" P1coJ€CT SrTE. So,L -= F/gll I /Jji) A1 ~ A1.1JmaJ001J ~~ yw.JV LlY1Af lJ = o-t:, 'Z SiA"E;J D :: Ir-i'O % f W"'£S Figure 4 SCS Soils Map 1 " 2 ,000' APPENDIX B OFF-SITE ANALYSIS DRAINAGE SYSTEM TABLE AND MAP -------------- OFF-SITE ANALYSIS DRAINAGE SYSTEM TABLE SURFACE WATER DESIGN MANUAL, CORE REQUIREMENT #2 Basin: Soos Creek Subbasin Name: A-B B-C C-D D-E 98-4\inB04 · ,,;~a,,:::.:.:.:111111• 1 !! .11111~111•1 : iEEtl::~.: Sheet flow ana sub surface flow Wetland/stream/ channel flow, approx. 150' wide 48" culvert Stream Soos Creek grassy wetland area Soos Creek grassy wetland area Crossing 192nd Soos Creek 2% - 3% 1% - 2% :::11~1;11~11111 O' -350' 350' -550' None noted 550' -650' I None noted 0.5% -1650' -I None noted 1 % 2,650' + Subbasin Number: :i11 11r!11111,ii r lll~lll.11IIHIIII$•··••·• Wet marshy area, relatively inaccessible Wet marshy area, relatively inaccessible This culvert was not visible at the time of the inspection, but according to the previous downstream analysis, has conveyed 100- year flows without floodin~ .. Creek flows in a wide wetland area. Map Output ®King County Blmmm Off-site Analysis Drainage System Map (Downstream Drainage Path) Scale as shown N~ws Page I of 1 C146i44M Comments http://www5.metrokc.re,\·/servlet/com.esri.esrimap.Esrimap?ServiceName=overview&Clie ... 9/14/2004 Map Output Page 1 of 1 @)King County Home IIIZIIIII 4#94'1144¥ Comments M-i¥ii4,M Information Plannin ' ; ' . , 1,33 = 70'f 111 ~'530' hnp:/fwww5.metrokc.gov/servlet/com.esri.esrimap.Esrimap?ServiceName=overview&Clie... 9/14/2004 Map Output ®King county Rll\l.lll lE:mllll Ci46MN ~ ~~ded Psilit.P.:& l -• .C>."J~My &l·:.it'!d.dty' O K~ a1tc1trty o:~,aoe s.a:&sn$ S:tsEets iMAP -Stormwater Legood Page I of I comments Ai£ik4'M e infonnalion included on this map has been compiled by King County staff from a variety of sources and is subject to change without notice. King County makes no representations or warranties, express or implied, as to accuracy, completeness, timeliness, or rights to the use of such infonnation. King County shall ot be liable for any general, special, indirect, incidental, or consequential damages including, but not limited o, lost revenues or lost profits resulting from the use or misuse of the infonnation contained on this map. n sale of this ma or information on this ma is rohibited exce t b written ennission of Kin Count . King County I GIS Center I News I Services I Comments I Search By visiting this and other King County web pages, you expressly agree to be bound by tenns and conditions of the site. The details. Off-site Analysis Drainage System Map (Drainage Basin Trib. Area) Scale as shown " I 1. 35 = 5,c.31 " I I :;,:. 'f,tlO .:::::;,, t .. ...;.. 1,,20'; o:~, I/ hnp://www5.metrokc.gov/servlet/com.esri.esrimap.Esrimap?ServiceName=overview&ClientV ... 9/15/2004 SEP.l~.2004 2:04PM KC l!LRD N0.102 1i1J Colnty water Ill land R880ll'CN llliliOn -IMilllUB Slrvas I ~ho ... ""'425--/5SI Fut --S8aroh P'1nt&d: 9/~412004 1:37'24 PM CQlll!t Tvpa Jftll of Prllllea -...orPr1111a ca.nlB 1'1'111,U llnr -1976-0110 C DRNG 1~0:s SE 186TH PL @BLVDLN e86G2 1977.()072 C FLDG 12202 SE 192ND ST 686F2 1&77-0074 C FLOG 13210 SE 192ND ST FILLIDRAIN WAY 68eG2 1978-0080 C PONDING 19246 121STPLSE !:AST OF 9ENS0N HWY 686F2 1978.0081 C DRNG 1924S 121STPL SE eeeF2 1981-02.25 C FLOG 13210 SE 192ND ST DRAIN WAY FILLED 686G2 1982-0539 C FLOG 12600 SE 192NOST EAST KENT AREA 686F2 19114-0313 R FLOG 13250 Si: 192ND ST TO ROADS OIV.4 686F2 1934-0314 C FLOG 13250 SE 192ND ST SE 192ND ST/134TH AVE SE 686F2 1985-0534 X DRNG 13250 SE 192ND ST LTR TO COMPLAINT 686G2 1966-0617 C ORNG 13432 SE 187TH ST FLOG ON SIDEWALK 686G2 1986.()816 C FLOG 13440 SE 192ND ST !'IEF:98-0832 NESPER 87-0770 686G2 1986-0816 ER FLOG 13340 SE 192NDST (Rl:F:86-0632 NESPER) PVT PROB. 686G2 1965-1278 CL ClAIM #10373 688G2 1987-0770. C FLOG 1~ SE 192ND ST FAIRWOOD SEE 86-0S16 688G2 1987-1049 C TO RD COORO 04/27187. 688F2 1986-0118 X DRNG 13250 SE 192ND ST SEE 85-1278 NESPERICL • FORSEST TAAi 686G2 1988-0238 C FLOG 18431 120THAVE SE NEW DRIVi:WAY WIU. IT FLOOD 686F2 1986-0238 ER PIPE 18431 120THAVE SE '4EEO EXTENSION OF 42-CULVl:RT e86F2 1988-0306 C BLOCKAGE: 12716 SE 188TH PL EASEMENT-FAIRWOOO/WALL CONSTRUC 68BG2 1969.()003 C DRNG 18612 120THAVE SE INCREASED RUNOFF/CHANNEL 686F2 1989-0192 C DRNG 18612 120THAVE SE X PIPE NOT WORKING 686F2 1989-0550 C EROSION 19118 130THAVE SE CLO EASEMENT CHANNEL MAINTENANCE 686G2 1989-0665 C DRNG 13308 SE 184TH PL WATER IN BASEMENT/YARD DRAIN CLOG 686G2 1990-0056 C FLOG 12700 Se 187TH PL UTILliY EASEMT CLOGGED 90.0259 68602 1990-0259 C FLOG 12700 SE 187TH PL M DITCH OVERFLOW 686G2 1990-1106 C DRNG 13517 SE 189TH PL CULVERT et.EW TRASH RACK/ CEDAR ES 686G2 1990-1108 NDA DRNG 13517 SE 169TH PL CULVERT BLEW TRASH RACK/ CEDAR ES 688G2 1990-1165 C DRNG 13421 Se 189TH PLACE 13517 SE 189TH PL 68602 199().1155 NOA DRNG 13421 se 189THPLACE REF 90-1106 686GZ 1990·1156 C DRNG 13429 SE 189TH PLACE 13517 SE 189TH PL 686G2 1990-1156 NOA ORNG 13429 Se 189TH Pl.ACE REF 90-1106 686G2 1990.1157 C DRNG 134:35 Se 189TH PLACE 13517 SE 189TH PL 686GZ 1990-1157 NDA DRNG 13435 SE 189THPLACE REF 90-1106 688G2 199().1158 C DRNG 181117 SE 189THPLACE 13511 SE 189TH PL El88G2 1990-1158 NOA DRNG 18917 SE 189TH Pl.ACE REF 90-1106 686G2 1990-1159 C DRNG 13523 se 189TH PLACE 13517 SE 189TH PL 68GG2 Page 1 of 3 ,<.,1,.._ WLt<:'.J.) l'iU. 11-.JC f.allpla'1t TYPI TYIIB ol l'mlllll MINIIII of Pl'dJIIII £mw•ta TlrolPIGI lillllllr 1:1111 1990-1159 NOA DRNG 1352'J SE 189TH PLACE REF 90·1106 586G2 1990-1160 C ORNG 13529 SE 189TH PLACE 13517 SE 189TH PL 686G2 1990-1160 NOA ORNG 13529 SE 189TH PLACE REF 00-1106 6S6G2 1~90-1630 C FLOG 19114 130TH AVE SE STREAM OVERFLOW 68SG2 1991-1090 C DRAINAGE 18532 131STAVE SE WATER PONDS IN YARD 686G2 1991-1090 NOA DRAINAGE 18-532 131ST AVE SE YARD PONDS 68SG2 1991-1090 SR DRAINAGE 18632 131ST AVE SE TOCIP 686G2 1993-0641 wee SED!Ml:NT 13120 SE 192ND ST 686G2 1994-0676 woe GREENH20 SE 192ND & 134TH A SE DUCKWEED 68002 1995-0~70 woe OIUCARS 19312 1~RDAVE SE RESIDENTIAL CAR MAINTENANCE eaeG2 1995"0374 C FILLING SE 192ND & 134TH SE WETLAND -REfD TO DOES 686G2 1998-0391 FCR POND? 19118 130TH PL SE HOLD-GPR WILL CALL HER 4 MORE OETAI 686G2 1998-0301 NOA PONO? 19118 130TH PL SE HOLD-GPR WILL CALL HER 4 MORE DETAI 686G2 1996,0391 R POND? 19118 130TH PL SE HOLO.GPR WILL CALL Hl:R 4 MORE DETAI 5B6G2 • 1996-04BO C CRKFLDS 13007 SE 192ND ? GROUNDWATER IMPACT WATER F'Ot-101 686G2 1996·0~21 FCR R/tl POND 1~1 SE 195TH ST OUTLET PIPE OBSTRUCTED ASSESSMEN 666G2 1996-1428 C SWALI: 18914 129TH PLACE SE OFFSITE Fl.OW IMPA.CTING PVT ORNG SY 686G2 1996-1428 NOA SWALE 18914 129TH PLACE: SE OFFSITI: FL.OW IMPACTING pVT DRNG SY 686G2 1996-1428 R SWALI: 18914 129TH PLACE se OFFSITE f'LOW IMPACTING PVT ORNG SY 686G2 1996-1550 C DRNG 19121 124THAVE SE PLUGGED 0/W CULVERT IMPACT TO PVT 686F2 1996-1894 C RUNOFF 13416 SE 187TH WA.TER OVER SIOEWAL>< GROUNDWATI:: 686G2 1997-0940 C DRNG 13007 SE 188TH PL GROUNDWA.TER/SHEETFLOW PONDING 686G2 1997-1179 C DRAINAGE 19113 121ST PL se :NSTALLATION OF DRNG IN R/W OLD/OFF 886F2 1997-1179 NOA DRAINAGE 19113 121ST PL SE INSTALLATION OF DRNG IN R/W OLD/OFF 686F2 1997-1178 R DRAINAGE 19113 121ST PL SE INSTALI.ATION OF ORNG IN R/W OLD/OFF 686F2 1997-1301 C DRAINAGE 19125 121ST PL SE SUBSTANDARD INSTL OF DRNG SYS PVT 686F2 1997-1319 FCR DUMPING 21709 146TH STE DUMPED BATIERY IN RID PONO 686G2 1998-0926 C DRAINAGE 19133 121ST PL SE AF'PARENT OBSTRUCTION IN ROAD ORN 686F2 1999·0174 FCR CLGINI.ET 13415 SE 187TH PL INLET PIPE APPARENTLY bBSTRUCTEO 686G2 1999-0449 C SPRINGS 13518 SE 186TH PL NEW Sl=R GROUND WATER INFIL ONTO P 686G2 1999-0632 C EASEMENT 19114 130THAVE SE INFO PROVIDED AeOUT RIO PONO ON PR 686G2 1999-0679 FCR Fl:NCE 18932 133RD Pl. SE Le.ANING FENCE NEEDS REPAIR 686G2 2000-0398 C DOM 12625 SE 192N0ST REQUEST TO DNERT FLOW DISCHARGIN 686F2 2000-0735 FCR MNM 18000 134THAVI: SE CEDAR BOARO FENCE AROUND PERIMET 686G2 2001.0548 WOP WOP 13120 SE 192ND ST 686G2 2002·0094 Fl RE!,1 13065 SE 192ND ST SWM/183 REMEASURE OF ORIGINAL 17.7 eee<l2 2002-0094 FlR REM 13055 SE 192ND ST SWM#83 REMEASURE OF ORIGINAL 17.7 686G2 2002-0204 FCR MMG 19000 134TH AVE SE 1) PSE UTILITY BOX DAMAGED. CALLED 686G2 2002-0424 C DOM 13003 SE 188TH PL SINKHOLE 01:VELOPED APPARE:NTLY 0V 686G2 2002-0424 NOA• C!OM 13003 SE 1881H PL SINKHOI..E DEVELOPED APPARENTLY OV 686G2 Page2o0 SEP.14.2004 2=0Sf'M KC WLRJ N0.102 F,3/3 --: TYII of,...,_ AihPDll'rallll• Ea11118 Droll'lga --2002-0424 R DOM 13003 SE 188TH PL SINKHOLE DEVELOPED APPARl:NTLY OV 68602 2003-0266 C DD1'.' 15759 1301HAVESE LOCAL PONDING PROBLEM. MAY BE THE 686G2 2003-0545 WQR WQB 18601 126TH PLSE 686F2 2003-0762 WQA WQAI 19433 VASHON HWY SW BMPS ari, ALL IN PLACE 686F2 2003-0909 WQC WQDR 18601 126TH PL SE AUTO FLUID Rl:SIDUI: ON STREET AS A R 696F2 Page 3 013 APPENDIX 8-1 DRAINAGE COMPLAINT ANALYSIS (previously submitted) SOOS CREEK PLAT DRAINAGE COMPLAINT ANALYSIS LEVEL 1 TECHNICAL DESIGN AND INFORMATION REPORT FOR PRELIMINARY PLAT REVIEW For the King County DOES: SUBDIVISION FILE _A03P0286_ '. Richard A Boston Addendum to Report of January 26, 2004 Boston Design and Development Co LLC 425-226-2145: Neal M Jacques, P.E. Jacques Consuhing 206-242-5322 Soos Creek Plat TIR 1 By Jacques Consulting March 20, 2004 TIR Addendum DRAINAGE COMPLAINTS King County records were examined fur downstream drainage complaints per core requirement #2. Note that at the discharge point this project contributes approximately 2% to the drainage basin flow thus requiring ~ mile investigation. But this report investigated southeasterly fur one mile along the Soos Creek Basin (see attached map). The area was inspected and the Counn, complaint listings for a one mile radius were !'i19!"W'f4. The Soos Creek drainage basin in this area is relatr1ely flat wide and heavily vc,getated (grass) with no erosion or flooding problems. The complaint list is attached but they all deal with mues which are uphill either west or east of the Soos Creek Basin. Only one was somewhat relevant, Complaint Number 96-1550, which is a class I issue (attached). This complaint in 1996, describes the 18" culvert across 124th Ave SE at SE 192 as blocked and thus erosion over the 124111 gravel road. The solution, to unblock it, was done. The downstream flow ftom this project does not flow in this locatic>n but because the project access road goes over it, it was included. In Feb:umy 2004 property owners were notified of King County's plan to widen SE 192 fur a left tum lane, thus this culvert will likely be modified. The subject project final engineering will have consideration fur the revised County intersection design. The remainder of the complaints bad no relation at all with the project. The five page list and a map sbowning location of the most significant problems (eight ponding/flooding complaints) is attN :bed fur general reference. These all involved tributary flows ftom west or east down into drainage systems flowing ~ into Soos Creek Basin. None have any relation to this projects drainage in the Creek itself. • In conclusion, fur the subject project drainage path. there is no indication of any category 1, 2, or 3 issues with drainage within one mile downstream. Note the TIR downstream analysis dated Jan 26, 2004 fur additional discussion. 1. Soos Creek Plat TIR 2 By Jacques Consulting March 20, 2004 -{ 96TH \ J ST SE i== IO .... .... 'ANTH[f K;\ "'\ \ \ CR~EI<. P<r.AT' ARE:A 1,;;: ..5 H-aw iAI(r. 'l){?4IN"A~E p.(?EA ·FUR I M 1t...,1i. Dcv...-N"~ Soos SE N~ ,_ ... V ~-..... ;:::i ... LU ~ V, .... 184TH '"'l ST --···· ,_, I SE 18§.IJ:LlL ~ .... .... I~ . ..l~Trl;j I f T ~I"" .... "< .... § "' ..... iFTH l til ST ~ - ~/33 .... 198TH sr 4 ~ ' SE 203RD ,-w ~ (.Ii lf'VI Nl SE 202ND Pl ~... ;:i: c·tiif-·w,:·· ~ST ~lg~*' m ST f .li-:1 ~ ---------·-·--·--- ' / ,.,,, ,._ I!: J S <!.,.,'-f! I :Z.00" ..=-H' ,l,\J.l,.J 1 SE lS2li0Sf 0::: -; -~.,.-, "'-' ---1 " . -~ \ u.J '. '..?ffe.f1£1-""' V) a SE 188 o WY :g .'>,- < SE 190TH. ST SE 188TH ST_ SE 188TH P~' i=/t,i ~, .. ,-f!< 200TH .,. I ~ ' 12 , • .., __ .,_ I~ 201STI ST 202ND) ST ~ ~w ""' _/.,, 'N ~· ~ tM.18.2084 5:3E!l'M Jc;\. ......, • l<JNG COUNTY SURFACE WATER MANAGEMENT DMSION DRAINAGB INVESTIGATION REPORT f'aae 1: IMSilGATICNllSQIIEST ~ C'r< ,,.. e/uf,t;, Ol('dby. 1)~ Plle'No. </6,-/55"0 ,.._pm1p111n1y111r-· 11 CDaYt. ia,.J NAME: & :4r J#qaolr: PYDNE J/5'/-'?JJ97 ___ _ ADDRESS! lt:f/'ZI ~ l~f?'" /111£ Se CllY. ,g,:.unu1 ._;_.._ Z1P.flo£B Lcn:donof.-fllllll,i. r • aa: pi'+eb ,"s ~ • .,... si lf2,,.J .,-· /21'.,,,, Alts, ff a tadl'tDl*m: //~.!1'64' ~'~§"!!-¢~ . .A/OR. . . . . ·· ;'. ~... . . . • l.•f 2 of: SP Z.?Sf/3 ,~ ...,_,, .,. . ., 5 ·' ~ 3l.·31._L Plml Net. ,/9 9tflt'J D U2- 1/' 6 T R · Balll~ OountclDtlt_,9_ alill!IINo: Dltll'OSl11DN: TUl'Md to.__ ... ____ by __ V ..... IIQIIIIIY la Ilea\ notlW: .,... Plablaii Im bean ca,wtlli. "'""."'-:-FIRoli·iiipal.&iiiiii,'iii.iiiit.aiiiii,iiiiiiiiaiiiiiiillii· ;:---__ :::JPiiiiilkNiiiihiiiii. 1iii1iii:iil·"iiii.iiwiiii•liit iii1iiii1Si'ip.Ji111ial1111:m: _ ... , . '. .... ~ _, ... • I I --. . DRAINAGE INVESTIGATION REPORT Fll:LP INV&SIIGATION ____ .... , ETI 11179---. • _., IV,J EJNl)f AIWP I J'JIDN8 n: D:OIIMGB ... MAIR'Ei4WWW~ I WWW--·---·------ 'DPMa ~ .,, .... ===----i aiJ&J.11 .... . QWC II lft-·-9, .. WW-Nl,W ----1911WWW ... ",WWWWWW W.-lt.U blll I-·----· I I Ill II,,_-., --•.w •• ·--Ol'VF I -81N cal t ........... ,., ..... _, ___ __ i&BICH: ---- -· ---~--·!._A!.--- __ .... --·==== ft112NDST J"l"r{ •• uu -~ ,J. -•• ® MESSA.GI: TO JP11Y Ylffi II& ILp PIWI NI ... DMPDllf "''" IIAILfl'PPM now ia.ea.. 1 tnW --- 1Mlff rmu. ••• •"'*fir euaa,PCI IM11ill 'MIIR 1™ UICM. DROIINIUIR IISS Hi 111111. ffOII GD l'Olt 10IIR ii& UN& DR.W 1'IPI! llf 19U1 • 1H1H Aft SI! AH !!.UIS 'JO lie Wil** THI! Ulll' ~ Iii IRUJIN OIi ffl! AO IWOIIS IIAR i'IPI APl'UM 10 Ill! Pl ua n, Pl.Ella IIIN.Y IF RDU8 WILL c;a-= II' IIOT WU! W. -=---__ _. --· It I SlGNBD UPLY DATE SIGNED : tij-·-·=•-·w~ t < ~' , ... ..._ ~, ~ ~-SE 283RD ~ ~ i!: q, SE PL ,.... oo ; l<!lc;I .... ' 18 SE i,,J' SE 184TH,.... ST IB4Ttl ~ SE PL I ut101ttr· sr ' SE 186TH ST TH PL ::,. < lj ,_ ...... !5 ""· !li~'wi ~ ,;f' SE ,...., !:J 190TH UI ,...., 192ND l~Tli ~Ii .... SI 8 noao '"'" <: i .... 'Si '~If"'=· -"'"" -- 96TH -l ST ST -.. t Tff Sf i ~l ~\ --~ ... /:::! ~ -·I ii!-, ' 7':' .... ... ks£ 1' io;:""'1;; '~ rcR 206Ttt-s'r"sr , -Ii 1 ~ fli,tw \" --\ 'A' =·~ l8TH P'I.. ~ l<)sf1-~ ,c _:_icf ~ f . 0 ST ST :r SE 219.JI\__\ fuC\~ 11600 glljj g E~,=t· ~l ~-,.-.Jin"l"II ~ V'lbEl: ~ j i= ~33 .... ,_ s I Ca N.I "'" I C ~NT' ~ (..l"t" jl.,)~,.. Rt'-L ~ ~"" D\c_ ,,._, r,/ ~ (r1[_ C. .::.t-'\, (-' I.. ,...IV "'r I.. 0 C:..,:,...Tl ON ,S. ... It..~ SC!.,1.!lr 1200.' = I" ~ "' 'a i} SE ., ~t. !l:l7TH ST SE lBBrlf Ii WY ~ >f- <C SE 190TH ST SE 1 SE l ; 200TH 1ST 201sT1 s1 202NDI ST /:::! i[ ... ~ i= ~ _J ::i: .. .:l~ __ -: ~->i SE 204TH . PL ·· < > I ' ' I I ST <, i= S; HFR.10.2004 5:36PM KC "'-RD llV,.&.UU I • I..' .... -. -----111111 I I llt ..... ,-, SIIOII0043:6M7 PM .... = .... II ........ I I ..... 1975-01<18 C EROSION 11227 SI! III09l'H ST GALEN CARlll 11 111181'4 1077--0003 C DRNG 1f!l!OI' SE 11112NO ST 0 GOLD&N HILLS 68IRt 1977-oo72 C FLOG 11!21le SE 1821«> ST ll8llf2 111'8-C1C*) C FONDING , .. 121STPLSE !'AST OF BSISOH tfWV ll86F2 1971MJ081 C DANG 192411 121ST Pl. se l88FI! 197H085 C FLDG 209ll1 120THAVE SE IMCKVNID 111181'4 18S!,Q1 C DANG 111817 122NDPI. SE IILClCl<ElYEAS1 Hill. AAl:A IIIIIFS 11181-(1215 C ORNG 111918 122NDPLS& OOCAYINGIN 68IIF3 1981..QSIO C FLDG _, 1ll!lml A.VE SE PANTNER U<N'EA 88GF4 19112-0539 C F\.DG 12IIOO SE 191!ND ST EAST KENT' Nl&A 686F2 - 1911:HMM X DANG 12Sl8 SEIQ!NOPL S\'STl!M MAlN"l"8ilANC BIFS 11184 0091 C ORtG IIIIS8 120THAVE se DITCH FIUJNG 688F4 1984-DS\3 R FLOG 13250 SE 1111!N> ST TO ROADS DIV.4 &aBl'2 1984-0314 C FUlG 13290 SE192NDST SE 182ND STl134TH AVE se GBIIF2 19840324 C DANG SE t!Dfflf STlt2fflt AVE IIMf'S 1-.01FO C FI.DG 18517 SE 2001HST STORM MATED 68IIG4 19,0377 E DANG 12002 SE iCIJTHST 111.TRCRTD PROB. III.OCICED Oflll/f!NAV 8llflF4 11188 OG79 C R.DG 198117 131mt PL , SE EROSION 981163 19860832 C DAN8 132511 se 1112NOST DRAINPIPE ll8tlG:f 191111 Dell2 ER DRNG 1111&) se 11111ND ST PROB CRTD BV PflM1" RVW 08IIGS 111811 D7ll2 C DRN6 121«1 SE 2001'Hff MAINTENANClE Of' t.crr .... 19-1180 C FLOG 18413 SE aoantST LAND IN FLOOO Pl.AIN IILOCICa> PIP£ 681164 1118&-1182 C DANS mm SE acrrillst SEE •1146Jl!00.1>491.019R,0317 118884 11188-11112 ER OIIN6 1371D SI! 20DTHST (D8 Pl.l) PROB COR. 88164 19117.Q246 C FI.DG -1271HPL SE WATERl'ROUNEIBIIIORS 87-4!818 688Pa 11187.Q300 C DANG 1S701 SE 201srsr OOWNSFClUTSNOT'COIIClED TO ORN 811884 '1887-0000 Ef\ VIOLATE 13701 SE 201srsr SEE a&-1'18t.114 B7..Q4111,G317,G4&2 61184 11111-0317 C • . fl.DQ 111118 SE 2'J1STST DOl"JNSFOUTS NOT CONNECTED 11-G300 ll88G4 11111'°491 C FLOG 13100 SE l!IIIINDCT DOWNSPOUTS e&-11ol8, 11112 87-llllll0.317, 1111164 1987-0491 NIM CD&l'l-11 SWMDIOIDNPROB 68SG.1 1987-0492 C FLDG 137112 SE IDINDCT 00:JNSPOITIS88-1141.118287-o300,317. fi8IIG4 1917.c&75 C DITCH 1""'7 tN!liAVE SE OMIW3E DffOH ON PftuPERIY 8l6f3 ,~c DflNQ 1tMIIO 1MnlAVE SE eASEMENT ENCLOSING DITCH ll88G3 0 11187"°918 C DRNG l!lll23II 1271lf PL 8E WA.T&FI UNDER HOUSE 17-G1!441 ...... , 1987-09118 C DIN. 1a10 SE &mfl>PL IIJ.EQAL FILI-IN SOOS CAEEI( A8G3 11187·1CM8 C TO RD COOM041'D/fr1. 8F2 19881122" C DRNG l!IJl!IO 112NOAVE SE WATERFRlU NEW OEVEl.OPEMENJ" 1181184 Page, ars '"-NLl<1.I .................. . ~--....... C } I I llll TWIii 1'11111111 .. .,.,.. ....... .... Clllt 1881100M C FU)8 11Na1 UOTHAVE. SE NEW DlfVEWAY 'MU. ff FLOOD S8llf2 1918 ~298 ER PIPE 11N81 1lllml 11111!! SE NlBI EXTENSION OF <Ill" CULVE!fT 68IIF2 1988 lll'3I' C DANG 13751 se IIDIINDPL WA'JER ~ CI.EANBJ UP CAEa< 68164 ,~c DANG 19815 133ADAVE SE UNFENC1!D M> l'ONIJRNFO(;f TO~ tllNIGll 111880Sll8 C DANG 19412 13fflf Pl SE NEAR SOOS GReEIOFII.L.~a EfJIING -1911&<1551 C DFIHB 20002 12'THAVE SE FIJ. INWETWIOS li8IF3 19880806 C DANG 19622 188ADAVE. CIN. IILOCKAGeltEW CONS1llUC1'ION 688G8 1986 t.eGII E DANB 111111!2 t38RDAVE NEWDflAW SV8EM 11111133 11119aoo3 C DANG 111612 1111THAVE se ,NlRS,SS> RIJNQl'FJCHN«E li8IIF2 1MNOII C DANG 194CJO 1241Ml"'E SE'. Dm:HliWMTENANCE 88IIRJ 1989000 C Df1NEI 2llND 182NDAYE SE (NO FOREST GU:N)SOOS FLOOD PlAIN 68864 1!8!-0192 C DANG 181'12 121Jllf Al/£ SE XPIPE NOTWORKING B88F2 19111H11128 C DM6 1Z!IIR SE 204THSf BUILDEI\ OF HEW HDIE IMPOff1'ED FILL 8ll8F4 1111M1410 C DANG 12213 se 189TMST PONDING IN DIWWtGE fASEM9IT a© 1•veas c DflNB 14439 14!RDPL SE CONST ON NEW HOMEIWET YARD G8IIGS 19190554 C DflN6 1Z!IIS se 20$THSF l!HOS10tf OF YIIADS IN NEW Pl.AT 88F4 19180li60 C DANG lll508 123ADPL SE DOWNSPOUTS ERODING VAPID IJ9.Cl5&I 88IF4 19880561 C EftOSION f05ll8 12!ADPL SE NEWtfOME! DOWNSPOUl'SOPeN 8BIIF4 1111JCM11!21 C i>ANG 18711 SE 1'9THPL DRNNPl'EF\I.JAl'RlAM . ~ 19IIIMM30 C FLOG 187115 SE llll!N>Pl CREEK J'lOODS> IO *5 &!OHM EY9lt . . 1119H4$4 C DANG 18482 SE 2111m!ST SfORM -1119CMMl4 NOA DRAINAGE 1341 se aocmtST / NAllJflAL DEIRIS TRASH MCKMDfl REV 6NGS 111811'°'61 ER l&WiOI.E t:MOO SE201STPL FAIWAeUIM CREST Pl.AT DIV 112 88IIFS 19111Ml811 C C/B 13719 SE 1W1NPL ll VNID. OIIERFLO. 80-0484,121 . 688QS 1811CH11tl0 C R.D8 12408 se 2CINOPL WA11!R FRON NEW OEVELOl"eMENT eaBF4 1890-100! C FLOG 19412 131TNPL SE IMCIC YNIJ tr DANQ PIP£ 68161 1fll0.10ll3 C DANG 120l!S SE 1115THST &PIING NLLONEOTCH NOTDRAHNG e8IIFB 1990-1130 C wman.v 19500 13SIIOAV£ SE BANK aTMIIRA~PLAYMNEA G8EIG1 1990-12116 C DANG 1111132 1MTHCT SE QWOFLOTll>ll'QfM,\INT -1990-1486 C EROSION 12II01 SE 201STPL LINDA CflSST l!l6F4 1990-1577 SE 8l\lDY 12110t SE 1111ST PLACE STUOVOF NIEA 88liF4 1880-15911 C' · FlDG 12408 SE 202NDPL WATER CN fltWWYARDILINDACREST ST OIIIIF4 19111"1812 X DfN3 1211>1 se l!01STST e UNOACAEST DIV II ... 1111tH>178 C 1811 se 11111ltST -f'COI INGCFWATER -@ 199'N>178 ER ,.,, SE 1111ffttST l'Ul6GEI) PAIVATI: PIPE -18'1-ol'711 SR 1IIO\ SE temtST HCMl!DWSI u:,r 1111183 ' 11191-G299 C FU)G 11181111 121STAVE SI: OYEN'I.OWOFF PIPES Ulf3 1991-GIIII SR FLOG , .. 121STA'le. Ill:. AEPERlO llAU> 811111'3 1991-41412 C IHIG 1116GO t311RDAVE GE El'IOSION CIF ACESS ROAQ -1•1-IMIS C FLOG. 12100 SE 1971JIS'I' 1111111'3 Pllgalot5 -·l'FR.10.2004" -5:37PM KC 1,1..RI) r Fl 7 ....... ......... --... -1991-o44S C A.06 188llll 141n"H AVE S& INFO TO fl)SIWAI BiiEROSICN IN Ylff) -11111.-;12 C R.D8 2.0024 1ll411i Ave SE CATQt BASIN LEAl<SIOYERfLOW 8IIIIF4 1991--0618 C FLOG 13430 SE 2001ffST 8111184 199'1.Q518 ~ FLOG 18490 se 21:11mt ff TOCIP G88G4 1811-051& PN FLOG 13480 SE IIIIOlH ST TOCIP -.. 1991-G519 C WTRSIN 20313 122NDAVE SE WATER OVER SIDEWALK ..... 1881.«i111 E WTRSNt lll0313 mNOAVESE OIIISWM DIV PLY 8ll6F4 19&t-o&'19 EH WTRS/W 21191S 1ll2ND AVE. 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GIIIG3 191111 Gell> NDA EAOelON 12801 SE 191THST IIOI Ml'ER8' POND O.F. -11112 IXIIIO SR EROSIOH 19518 1llllfl> Ave SE tlOI EiC .11NERS' POND O.F. ti88G3 19111D&B S3 STUDY cavsrr I.FQPADE IIW4 198&0310 C DANG' 188Cll 13CTKPL SE WETLAND GRN>ING-ORAltME W CRAW 8l8G3 19111M1310 NOA DANG 111832 1:MTH.PL SE WE'l'LNtDGl'IADIN&DRAINA IN «;MW -198!Ml810 RN DANG 191132 13'THPL SE WETUH>8RADINB-DflAINA8E IN CAAW 11883 1811S ases RN FI.DG 20247 11T1'HAVE SE UPS11lfAM oem.oPUEN'r 8IIF4 11111$4M12 C DRHG 1116DO 1amtl'LACE / SE WEI\AND CAUSINO DII/EflSION 68IIS3 11183-041:t NDA DRNG lll&OD 13ffif PLACE SE l8IG3 19&3-M12 AN · Df'IIG 18800 134TH PLIICE SE wenANDWOIVERSIQN ~ 1911Sr1Sl1 C DANG 137"5 SE 1!112NDPL POICllNG IN YNV:J J 119H577 NOA DflilG 19745 SE 2112ND PL NEW PIATWIU. NX/F'E.SS 1911W1617 AN DIM 13745 SE 202NDPL PONDING INYARQ, NIW>-C 1918 l6lil E EROSION 1IIOII SE f01STPL 61188$ 1993-0SIIO ER EA08ION 1l!IOO SE 201STPL -1'9811691 C FUIG 20402 1321C)AVE SE EAOSIOlf FROM'lliE Pl.AT OF GRAmoN IIMG4 191Mi111 ~. Fl.00 20402 1SH>AVE SE EROSION FflOMTHE PLATOFGAE,sroN 81164 199SD5111 C DANG 12llll SE aoantST SURCIWIGE FAQM Ci'9 lllllF4 181l1H1794 WQl DUMPING -1"'5151 SE llll8flD PLACE TOM». IIIIIIF4 11188-11194 WQC Dl.....«i 11!1i81 SE 2IIR> Pl.ACE TOWQA ~ 191M 0-188 C DANG 1NIIO 181fflt Pl SE ACTIVE 6MDINB VIQtAllON l93IMIIIII -19840l18 C DANG 2114411 1S1ST'Pl SE BflOKEN loWLBO)( FOST 881164 19114 0821 C INQJIAV 121i25 SE lllJ8RD Pl.ACE N4Y PIPES IN YAie WHERE SHE WI.I. OI 8IIIF4 llllM-OUI C PONDING 12111U2 SE l!OIINDPL PCN*G IN GUTTER eaiF4 1111M HIii WtlC O&JltlC8 188&2 133RDPL SE &111188 191U DBI& WQE OIUINC8 111812 18R>PL SE 68IG8 1'H<. 11<1. cllcl'I . ·-· ...... C 2 , tr .......... ... 11-... ..... ..... .. 1191£83 C FIIJ..IG 20411 132NOAVf. SE FIU.PUiCED wmaN SEWER l!ASBENT IIIWiG4 199' lf7IIS NOA FIU.ING l!IM11 1!2NDAYE SE FIU.PLMll:D WITHIN SEWER eASEMEm' 8IEG4 111115 0048 C DANG 211155 1k1HAVE SE WORK IN Wl:TI.ANDS CONrACT AINSI.E 888F4 19111H1Di'f C DANG 20803 1241HAVE SE GftOUND WATSI a PVT DRAIN llll&F4 1991Ml587 X DfltlG 20ISS UM-lliAVE a. WEnN1> ON HIS PROFERI 't .,.. 198fl1r.2' C CI.EANOUf 2CISS4 111srPl SE DMIN CUWf.OUTODNSTIMPAOT IIIGG4 19116 illll• C M)PQND 1,IQ SE 191THSf fW8GEDCU.VEfn" MJ DISCHM8! PIP GINIG3 19118 DOSI C R/l)P()NI) 2185 1M1HAW. SE DOWNSTREAM IMPACT FROM M'J oun.E ...-.. 1Wll24S C RUNOFF 111528 1Z!NDPI. SE SPRING HILL ELEMENTAl'IY INFO l'ID8 DI lll&FS 11111-0188 C FlDG , .. SI: 2lllffli ST FUlOOINB DUE 10 S'ltlAMANO SUBSTN ~l® 1-.o788 NDA FLDG 11231! SE l!II01)18T fLOCltlN8 DUE TO STORM AND SUIIS1N 11191H11811 R FUJG , .. SE ZOll\'HST Fl.OOlllNG DUE TO STORM ANO SUIISTN ::'F(f) · -· ,l!llli lli!!II C llflNB 18121 1!MTH~ SE l'WGGEDDIWCU.IIE:'Ri IMPN:1'1'0PV1' •. 1988-1a5 C DANG 2(JOIM 1:MTHAVE. se ROAD IIU'AO'.W PRQJECI" IMPICf eeeF8 , .... 111s wac DlM'ING 1380I SE 1amtST WAEaCED I/EH IN RD FACIUTY 081444 -1-.1908 E AIDl'OND 12818 SE 2SINl) PL FENC&~lfl'OTRACT ... 191'1-e51111 C DRAINAGE 11111118 SE 20IJlll PL PUIGGFD PRIVATE YAN> IJAAINTA PAO 8111184 1917.os:9 fCR MC.COM 1S3RD AVE SEO SE 195-19"'Tll QJ8 AOCE89 OVEFIA.OW PIP!! NEl!D"JR - 1917.o763 fCR ROPONO 1S!!I 132ADPL SE WNJl'AUSADJTOPOND PNICSIMJI. tal8i3 1117-1119 C DIWIWiE 19113 121STPL SE INSTM.lAllONOf'<DANGWRIW OUWFF ..-i Hlf7-11'19 NOA OfWN.t.GE 19113 121Sf PL se INSTAIJ.A110N Of ORNG IN MW OlD'OFF 68IIF2 1987-1179 R OMNAGE 19'13 121STPL SE MrAUAllONOF DANS INAW _OLQIOFF 1111ft 111117-1301 C DFIMWE 19125 121STPL SE SlllSl"ANIWID INSI\.OF DflNB 8V8 PVT ._. 1187-1505 C TAEES , ... se 2II01HSf IM\MBS.OUS~ ON COQffY IIAOI' IIIIRI 1•1-1$10 FCA AID 19IIOO 131AOAYE. SE DEBfllS a UTTERaOCICJNG TJWII-I RAC -11197-1572 C TREE 111l132 SE zmrHST REMOVAL OF WINllFALLS FIEllUIRS> flllllFS 1118H108 WQC OIi-SPIL Bl 1'1STl1MAVE SE SPILL OF P<lU..UrN«S ~ AD fWI 1111111'11 111118 0223 FCR FENCE .,. t27Tlf PL SE DUW3ED fENCli N>JNJENrlO FENCi! ...... 198&-038t C DfWNHIE 114113 SE 1811THPL NO NtOUASr RE Wl:TlANQIOPEN SPA llllfS t-.oe97 FCR DFIAIIAGE 188fl0 SE 0 SE 111S-1llfml PW'Y¥0TIWIH MCl<Sf'Ol)ING UPST 88IG3 , __ Fal N)PL.Ue0 SE llD8IH ST/127TH AVE PUlGAFD OAIFICE • FENCC! fll:PAIR &IIIF4 1111111 CSU C'. DFL--\INAGE 19138 121STPI. SE APPARENrOIISJftUCmN IN RQQ> DAN m8l'2 1111111 O&ll3 C RiNCE . t2l!III se tNJHPI.. REQUE81" FOR FENCE IIOLVJIDS AT N:,C IIIIFS 191NM1915 FCR f11'8GF!> 11111111 139ROAVE SE PWGGS> TIWlH flAQ(S Dl!lllS AEMCJY aa, 2IOIIIMICtl8 C DOM 121115 BE 11011>&'1" MQU&TTO DM!ffT ROW OISCtWIGIN a.Ft 20Cl00415 C ... 1220B SE !07THPL YEGETATIONGRDWTHIN'nWn'. nw:T 880F4 20II0-05ll1 l'CR NUB 11915 133RIJAYE se DW11Ge10M>PQIIOFROl'l!IBl8CIRH 11883 2III00-011S C DDM 1211112 11£ IOIJTff sr INc:AEASE PLOWWS IMPAC1WIG DAAINA 8IIIFI '-\, . IIIOIMl713 NOA-DDM 1221Z SI! 2DlllH sr INCAEM&R.OWSIMPACJlNG DRAINE ::;)® .2IJIJ0,0713 R ODM 1112112 SE 2llOTll ST INCAEASEFU7Ml•MmN8 01WtW3E f'ag84ol5 ·l'A?.10.2004 5:38PM KC 1-LRD t HI "" ...... ........ ...... L ... ... l!001-4R14 C DCM 211113 1211THAVE SE LITLITYWORK DAMAGED STUB OUR llAA ..... 21Xn-o41& woe WOB 12232 SE 200'rHST CONCEFI, OP SOAP 6UDS BeHG DISCHA 11181'8 llDDHMlilS WQC WQB 12Sl:S SE 198THS'f APPARENT LACI< OF POLLUTANT CONTR 111111'3 2II01-IMSS WQA WQ8 12313 SE 19IJJl,I ST APPAFIEIIIT LACK OF POI..IJSTANT OOKm ll9FS llll01-o47t FCR IINil -131THAVE SE VliGET"ATION GROWTH HEAVIEATHAN M 881184 20D1.Qli32 FCC WQO 1IIA30 SE IIOIT'H ST APP.\AENTOUMPING OF PAIMTOR?? INT" fl86F4 l!OD1-ca2 \WR WQD 1:M30 SE 2111THST APPMENT DUMPING OF PAINT OIi ff INT 688H 2llOIHJO:II C DTA , .. SE lill0Tt4ST N'ORMATION FIEQUES1' PFGAF1Dlt1G PO 983 3DOl!-0288 FCA BSR 1113158 131STP1.SE l!K).SWAI.E flETRO-FiT li88G4 l!llD2-lll2ll8 FIET llSR -131STPLSE BIO-SWALE AETRO-RT 1111184 l!GllN408 C l&fA 121!35 SE 19IJTllS'r FIEQUl:ST1'0 FIEMOVE mEES CN COUNT' tllllF3 20IJa,Gll)8 DOM I.AKEY EOF131N> N'f'NI/SfrBEAIISI ACrNtrY IN SOOS C 611164 I.NCEY EOF132ND APPARENT 91:AVERN::rll/ffY IN 8008 C 1111184 I.AKEY EOF182ND APPAR&NT BEAVER M:rrl/rfV IN SOOSC ~ 2IICIM809 A DCM I.M<EY EOF1112ND APPAAENI" SEAVER N:nMrY IN 8008 C 1111&84 l003-054$ WQR WQ8 18&01 USJHPLSE 888F2 II0007II! WQA WQAI 194311 VASHON HWY SW BMPS-ALLIN Pl.ACE li8IF2 2008,ClllQ9 WQC WQM 18601 126n1P1.SE AVTO FUJII) AESIOUEONSTI.El:f AS AR 888F2 2004-0183 FCR MNM t2IB1S SE 1!118J)iPI. ......... OllgMll.lll\mtr,!iJtt1si..QM liNF4 ,..5Cll5 APPENDIX C ANALYSIS AND DESIGN ~L[E(UJ\YJ[E [D)[E~ \YJ(Q;~LlE~ I ~(Q;(@(@[EfPtl ~L~Y~ EXISTING SITE: FOREST: 303,801 (6. 97) BUILDING: 1,364 (0.03) PAVEMENT: 12.243 {0.28) LANDSCAPE: 16,800 (0.39} TOTAL: 334,208 {7.67} [E)X(~~[J~[M(@ ~~1f[E COGGER N EB 0 I 75 , \ \ \ \ LEU~ DES· VOILES\ ~ *' ~ I', ,I !- \ " ;;. ; C. \ \ 150 : \ SCALE: 1" -150 fL ~L[E~\YJ[E [D)[E~ \YJ(O)~L[E~ I ~(O)r@~[E~ rL~Y~ [P)~(O)[P)(O)~[E[D) ~~l][E ::;~ru [T'n=,=;;f==;,9?,;\,l;;iF,;"s;m:!fi#!m \ -"!ITl</IJ' I ~,.,,-o·--. OGGER N E9 PROPOSED SITE Sf (AC): BY-PASS Sf (AC): \ \ \ \ LEU~ DES· VOILES\ 0 I \ \ <;_ \ t \ 7S i 1SO : BUILDING: 4,592x47x0. 7 = 151,077 (3.47) PAVEMENT: 55,367 (1.27) PAVEMENT: 14,864 (0.34) TOTAL: 14,864 (0.34) SCALE: 1 • = 150 rt. POND: 14,000 (0.32) LANDSCAPE: 98,899 (2.27) TOTAL: 319,343 (7.33) ROOF AND D/WS: (70% OF LOT AREA OR 4,000 SF -'M-!ICHEVER IS LESS) KCRTS Program ... File Directory: C:\KC_SWDM\KC_DATA\ [CJ CREATE a new Time Series ST 6.97 0.00 0.00 0.00 0. 39 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.31 0.00 exist.tsf T 1.00000 T [CJ CREATE a new Time Series ST 0.00 0.00 0.00 0.00 2.27 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 5.06 0.00 dev.tsf T 1. 00000 T [CJ CREATE a new Time series ST 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.34 0.00 bypass.tsf T 1. 00000 T 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 0.000000 (TJ Enter the Analysis TOOLS Module [Pl Compute PEAKS and Flow Frequencies exist.tsf exi st.pks [PJ Compute PEAKS and Flow Frequencies dev.tsf dev.pk.s (Pl Compute PEAKS and Flow Frequencies bypass.tsf bypass.pks [R) RETURN to Previous Menu (XJ t>Xi. t. KCRTS Program pond.exc Till Forest Till Pasture Till Grass outwash Forest outwash Pasture Outwash Grass Wetland Impervious Till Forest Till Pasture Till Grass Outwash Forest Outwash Pasture Outwash Grass Wetland Impervious Till Forest Till Pasture Till Grass Outwash Forest Outwash Pasture Outwash Grass Wetland Impervious Page 1 Fleuve des Voiles & Cogger Plats Runoff Cales 3/29/06 Flow Frequency Analysis Time Series File:exist.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--- Flow Rate Rank Time of Peak (CFS) 0.519 2 2/09/01 18:00 0.198 7 1/05/02 16:00 0.444 3 2/28/03 3:00 0.085 8 8/26/04 2:00 0.261 6 1/05/05 8: 00 0.425 4 1/18/06 16:00 0.388 5 11/24/06 4,00 0.745 1 1/09/08 9,00 Computed Peaks Flow Frequency Analysis Time Series File:devlS.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--- Flow Rate Rank Time of Peak (CFS) 2.34 6 8/27/01 18,00 1. 64 8 1/05/02 15,00 4.96 2 12/08/02 17: 15 1. 88 7 8/23/04 14, 30 2.76 5 11/17/04 s,oo 2. 77 4 10/27/05 10:45 3.25 3 10/25/06 22:45 7.01 1 1/09/08 6:30 Computed Peaks Flow Frequency Analysis Time Series File:bypass.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--- Flow Rate Rank Time of Peak (CFS) 0.082 7 2/09/01 2:00 0.073 8 1/05/02 16: 00 0.100 3 12/08/02 18:00 0.084 6 8/26/04 2,00 0.100 4 10/28/04 16: 00 0.088 5 1/18/06 16:00 0.123 2 10/26/06 0:00 0.161 1 1/09/08 6:00 Computed Peaks Level 1 Det Pond I 4' deep} Qmax = (4/3*0.261)-0.084 0. 26 Ht= 3/4*4 = 3' sumpks. txt -----Flow Frequency Analysis------- --Peaks Rank Return Prob (CFS) Period 0.745 1 100.00 0.519 2 25.00 0.444 3 10.00 0.425 4 5.00 0.388 5 3.00 0.261 6 2.00 0.198 7 1.30 0.085 8 1.10 0.669 SO.DO 0.990 0.960 0.900 0.800 0.667 0.500 0.231 0.091 0.980 -----Flow Frequency Analysis------- -Peaks Rank Return Prob (CFS) Period 7.01 1 100.00 0.990 4.96 2 25.00 0.960 3.25 3 10.00 0.900 2.77 4 5.00 0.800 2. 76 5 3.00 0.667 2.34 6 2.00 0.500 1. 88 7 1. 30 0.231 1.64 8 1.10 0.091 6.33 50.00 0.980 -----Flow Frequency Analysis------- -Peaks Rank Return Prob (CFS) Period 0.161 1 100.00 0.990 0.123 2 25.00 0.960 0.100 3 10.00 0.900 0.100 4 5.00 0.800 0.088 5 3.00 0.667 0.084 6 2.00 0.500 0.082 7 1. 30 0.231 0.073 8 1.10 0.091 0. 14 8 50.00 0.980 Page 1 Fleuve des Voiles & Cogger Plats Preliminary Detention Sizing Date: 3/29/06 Retention/Detention Facility Type of Facility: Detention Side Slope: 3.00 Pond Bottom Length: 184.02 Pond Bottom Width: 61. 34 Pond Bottom Area: 11288. Top Area at 1 ft. FB: 1954 9. Pond H:lV ft ft sq. ft sq. ft 0. 449 acres Effective Storage Depth: 4.00 ft Stage O Elevation: 0.00 ft Storage Volume: 57698. cu. ft 1. 325 ac-ft Riser Head: Riser Diameter: Number of orifices: Orifice # 1 2 Height (ft) 0.00 3 .00 4.00 12.00 2 Diameter (in) 2.19 2. 34 Top Notch Weir: None Outflow Rating Curve: None Stage Elevation Storage ft inches Full Head Discharge (CFS) 0.260 0.149 Pipe Diameter (in) 6.0 Discharge Percolation (ft) (ft) {CU. ft) {ac-ft) (cfs) {cfs) 0.00 0.00 o. 0.000 0.000 0.00 0.02 0.02 226. 0.005 0.020 0.00 0.05 0.05 566. 0 .013 0.028 0.00 0.07 0. 07 794. 0.018 0.034 0.00 0.09 0.09 1022. 0.023 0.039 0.00 0.11 0.11 1251. 0.029 0. 044 0.00 0.14 0.14 1595. 0.037 0.048 0.00 0.16 0.16 1825. 0.042 0.052 0.00 0.18 0.18 2056. 0. 047 0.056 0.00 0.28 0.28 3219. 0.074 0.069 0.00 0.38 0.38 4397. 0.101 0.080 0.00 0.48 0. 48 5589. 0.128 0.090 0.00 0.58 0.58 6797. 0.156 0.099 0.00 0. 68 0. 68 8020. 0.184 0.107 0.00 o. 78 0.78 9258. 0. 213 0.115 0.00 0.88 0.88 10512. 0.241 0.122 0.00 0. 98 0.98 11781. 0.270 0.129 0.00 1. 08 1.08 13065. 0.300 0.135 0.00 1.18 1.18 14365. 0.330 0.141 0.00 1.28 1.28 15680. 0.360 0.147 0.00 1.38 1.38 17011. 0.391 0.153 0.00 1. 48 1. 48 18358. 0.421 0.158 0.00 1. 58 1.58 19720. 0.453 0 .164 0.00 1. 68 1. 68 21099. 0.484 0 .169 0.00 1. 78 1. 78 22493. 0.516 0 .174 0.00 1.88 1.88 23903. 0.549 0 .178 0.00 1. 98 1. 98 25330. 0.581 0 .183 0 .00 2 .08 2.08 26772. 0.615 0.188 0.00 2.18 2.18 28231. 0.648 0.192 0.00 2.28 2.28 29706. 0.682 0 .196 0.00 2.38 2.38 31197. 0.716 0.201 0.00 2.48 2.48 32705. 0.751 0.205 0.00 2.58 2.58 34229. 0.786 0.209 0.00 2.68 2.68 35770. 0.821 0 .213 0.00 2.78 2.78 37328. 0.857 0.217 0.00 2.88 2. 88 38902. 0 .893 0.221 0.00 2.98 2.98 40493. 0.930 0.225 0.00 3.00 3.00 40814. 0.937 0.225 0.00 3.02 3.02 41134. 0. 944 0.227 0.00 3.05 3.05 41617. 0.955 0.233 0.00 Surf Area (sq. ft) 11288. 11318. 11362. 11391. 11421. 11451. 11495. 11525. 11554. 11703. 11853. 12003. 12154. 12306. 12458. 12612. 12766. 12920. 13076. 13232. 13388. 13546. 13704. 13863. 14023. 14183. 14344. 14506. 14669. 14832. 14996. 15161. 15326. 15492. 15659. 15827. 15995. 16029. 16063. 16113. 3.07 3.07 41940. 0. 963 0.241 0.00 16147. 3 .10 3.10 42425. 0.974 0.251 0.00 16198. 3.12 3.12 42749. 0.981 0.264 0.00 16232. 3.15 3.15 43237. 0.993 0. 279 0.00 16283. 3 .17 3.17 43563. 1.000 0.293 0.00 16317. 3.20 3 .20 44053. 1.011 0.298 0.00 16368. 3.22 3.22 44381. 1.019 0.303 0.00 16402. 3.32 3.32 46030. 1.057 0.321 0.00 16573. 3. 42 3.42 47695. 1.095 0.337 0.00 16744. 3.52 3.52 49378. 1.134 0.351 0.00 16916. 3. 62 3. 62 51079. 1.1 73 0.365 0.00 17089. 3. 72 3. 72 52796. 1.212 0.377 0.00 17263. 3.82 3.82 54531. 1.252 0.389 0.00 17437. 3. 92 3.92 56284. 1.292 0.400 0.00 17612. 4.00 4.00 57698. 1.325 0.409 0.00 17753. 4 .10 4.10 59483. 1.366 0.727 0.00 17929. 4 .20 4 .20 61284. 1.407 1. JOO 0.00 18106. 4.30 4.30 63104. 1.449 2.040 0.00 18284. 4.40 4.40 64941. 1.491 2.840 0.00 18463. 4.50 4.50 66796. 1.533 3 .130 0.00 18642. 4. 60 4.60 68670. I. 576 3.400 0.00 18822. 4.70 4.70 70561. 1.620 3.640 0.00 19003. 4.80 4.80 72470. 1.664 3.870 0.00 19184. 4.90 4.90 74398. 1.708 4.080 0.00 19366. 5.00 5.00 76344. 1.753 4.280 0.00 19549. 5.10 5.10 78308. 1.798 4.480 0.00 19733. 5.20 5.20 80290. I. 843 4.660 0.00 19917. 5.30 5.30 82291. 1. 889 4.840 0.00 20102. 5. 40 5.40 84311. I. 936 5.010 0.00 20288. 5.50 5.50 86349. 1. 982 5.170 0.00 20474. 5.60 5.60 88405. 2.030 5.330 0.00 20661. 5.70 5.70 90481. 2.077 5.490 0.00 20849. 5.80 5.80 92575. 2 .125 5. 640 0.00 21038. 5.90 5. 90 94689. 2.174 5.780 0.00 21227. 6.00 6.00 96821. 2.223 5.920 0.00 21417. Hyd Inflow Outflow Peak Storage Stage Elev (Cu-Ft) (Ac-Ft) 1 2.87 1. 99 4.29 4 .29 62984. 1.446 2 1. 43 0.92 4 .13 4.13 60102. 1.380 3 1.89 0.41 4.00 4.00 57663. 1.324 4 1. 52 0.38 3.71 3. 71 52577. 1.207 5 1. 71 0.36 3.56 3.56 50040. 1.149 6 1. 01 0.22 2.80 2. BO 37609. 0 .863 7 1.31 0.17 1. 65 1. 65 20723. 0 .476 8 1.18 0.18 2.00 2.00 25571. 0.587 Hyd R/D Facility Tributary Reservoir POC Outflow Outflow Inflow Inflow Target Cale 1 1. 99 0.16 ******** ******* 2. 05 2 0.92 0.08 ******** ******* 0.97 3 0.41 0.12 ******** 0.44 0.44 4 0.38 0.09 ******** ******* 0.41 5 0.36 0 .10 ******** ******* 0. 38 6 0.22 0.06 ******** 0.26 0.26 7 0.17 0.08 ******** ******* 0.23 B 0.18 0.07 ******** ******* 0.21 ---------------------------------- Route Time Series through Facility Inflow Time Series File:dev.tsf Outflow Time Series File:rdout POC Time series File:dsout Inflow/Outflow Analysis Peak Inflow Discharge: 2. 87 CFS at 6:00 on Jan 9 in Year 8 Peak Outflow Discharge: 1. 99 CFS at 10:00 on Jan 9 in Year 8 Peak Reservoir Stage: 4 .29 Ft Peak Reservoir Elev: 4.29 Ft Peak Reservoir Storage: 62984. Cu-Ft 1.446 Ac-Ft Add Time Series:bypass.tsf Peak Summed Discharge: 2.05 CFS at 10:00 on Jan 9 in Year 8 Point of Compliance File:dsout.tsf Flow Frequency Analysis Time Series File:rdout.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--------Flow Frequency Analysis------- Flow Rate Rank Time of Peak --Peaks --Rank Return Prob (CFS) (CFS) (ft) Period 0.924 2 2/09/01 16:00 1. 99 4 .29 1 100.00 0.990 0.184 7 12/28/01 17:00 0.924 4.13 2 25.00 0.960 0.356 5 2/28/03 7:00 0.409 4.00 3 10.00 0. 900 0.168 8 8/26/04 6:00 0.375 3.71 4 5 .00 0.800 0.218 6 1/05/05 15:00 0.356 3 .56 5 3 .00 0.667 0.375 4 1/18/06 23:00 0.218 2.80 6 2.00 0.500 0.409 3 11/24/06 8:00 0.184 2.00 7 1.30 0.231 1. 99 1 1/09/08 10:00 0.168 1. 65 8 1.10 0.091 computed Peaks 1. 64 4.25 50.00 0.980 Flow Frequency Analysis Time Series File:dsout.tsf Project Location:Sea-Tac ---Annual Peak Flow Rates--------Flow Frequency Analysis------- Flow Rate Rank Time of Peak --Peaks Rank Return Prob (CFS) (CFS) Period 0.965 2 2/09/01 16:00 2.05 1 100.00 0. 990 0.205 8 12/28/01 15:00 0.965 2 25.00 0. 960 0.384 5 2/28/03 5:00 0.444 3 10.00 0.900 0.226 7 8/26/04 2:00 0.412 4 5.00 0.800 0.257 6 1/05/05 8:00 0.384 5 3.00 0. 667 o. 412 4 1/18/06 21: 00 0. 257 6 2.00 0.500 0.444 3 11/24/06 6:00 0.226 7 1. 30 0.231 2.05 1 1/09/08 10:00 0.205 8 1.10 0. 091 Computed Peaks 1. 69 50.00 0.980 Q) e> (tl ..c: u -~ 0 Return Period 2 5 10 20 50 100 10L -------------~----~--~-~-~~ /' rdout.pks in Sea-Tac • dsout.pks c exist. pks LO () 0 • • 8 000 ___ _ 10-L-t----------------------------~ 0 LO 1 2 5 10 20 30 40 50 60 70 80 Cumulative Probability 90 95 98 99 Treatment Pond Sizing Routine Project: Fleuve des Voiles & Cogger Plats Treatment Pond Date: 3/29/2006 Blue represents manual entry fields Red represents calculated fields Step 1: Wetpool volume factor (f) ... either 3 or 4.5 f= 3 Step 2: Mean annual rainfall (R) ... from Fig. 6.4.1.A, pg 6-69 R= 0.47 in Step 3: Runoff (Vr) ... Vr=(0.9Ai+0.25Atg+0.1 OAtf+0.01 Ao )xR/12 Ai= Atg = Atf= Ao= Vr= 220,444 sf 98,899 sf O sf O sf 8,739 cf Step 4: Wetpool volume (Vb) ... Vb=fVr Vb= 26,217 cf Step 5: Wetpool dimensions ... Vb=h(A1+A2)/2 Solve by trial & error A1 = 15,995 sf L= 73 ft 3L= 219 ft h= 4 ft S= 2 ft A2= 11,578 sf "Vb= 55,146 cf *if Vb calculated in Step 5 < Vb from Step 4, then increase h Drainage Cales FV.xls (Treatment Pond ) 3/29/2006 • APPENDIX D MAINTENANCE REQUIREMENTS FOR PRIVATELY MAINTAINED DRAINAGE FACILITIES • MAINTENANCE AND OPERATIONS MANUAL FOR PRIVATELY MAINTAINED DRAINAGE FACILITIES ADDRESS: 16217 114th Avenue SE Renton, Washington RETENTION/DETENTION FACILITIES The purpose of both the detention pond is to reduce the rate of runoff from the developed portions of the property. Water can flow freely into the pond, but orifices in the outflow riser restrict the outflow. When the inflow exceeds the capacity of the orifice, the excess water is "stored" in the pond, and released slowly after the storm abates. In order to function properly, the facility must also be kept free of accumulated sediment. The outlet and connection pipes also must be kept clean, as even a partial blockage could significantly impact the ability of the facility to store runoff. The facility should be visually inspected for sediment accumulation and blockages at least once each year and also after every major storm greater than or equal to a 10-year return frequency. WATER QUALITY TREATMENT FACILITIES The purpose of both the permanently wet portions of the pond and the cartridge filter treatment catch basins is to reduce the level of contaminants in the runoff water, through filtration and sedimentation, though the plants in the wetpond will also reduce pollutants though bio-uptake. It is essential that the water quality pond have calm conditions be inspected regularly for accumulation of sediment. The pond should be visually inspected for sediment accumulation and blockages at least once each year and also after every major storm greater than or equal to a 10-year return frequency. The cartridge filter treatment catch basins should be maintained in accordance with the manufacturer's recommendations. CONVEYANCE SYSTEMS Pipes transport runoff from one place to another, in this case from catch basins to the pond, then to the downstream drainage system. To work properly, pipes must be kept free of silt and other debris. If pipes become blocked, surface flooding will usually occur. CATCH BASINS AND AREA DRAINS Catch basins collect surface drainage and direct it into storm conveyance pipes. They help prevent downstream drainage problems by trapping sediment and other debris that would otherwise flow downstream with the runoff. It is important to keep catch basins clean so accumulated silt is not flushed out during a significant storm. Also, if the outflow pipe becomes blocked with debris, surface flooding will usually occur. All catch basins should be inspected at least once each year and after major storms. Area drains convey runoff directly into conveyance pipes. To prevent surface flooding, their surface grates must be kept free of litter and debris. If dirt or other sediment gets into the pipes and they become blocked, the pipes will need to be cleaned, either manually or using a Vactor truck. The following tables identify maintenance issues, which should be addressed regularly, describing possible problems with the drainage system and their respective solutions. • APPENDIX E BOND QUANTITIES WORKSHEET (not included in this preliminary report) RETENTION/DETENTION FACILITY SUMMARY SHEET & SKETCH DECLARATION OF COVENANT (not included in this preliminary report) • KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL STORMWATER FACILITY SUMMARY SHEET DDES Permit Number_,_A_,_..,()_,_?L/J.,.O'-"l«'.JJ,.,.i,,__ (provide one Stormwater Facility Summary Sheet per Natural Discharge Location) LJJ1 Pu Q:12- Overview: Project Name Heu ve der W:,-;,..[ Pl,;/ {!099er JJ.arf P!J Downstream Drainage Basins Major Basin N~me /..._tik et</t21k1A1lilTJ Immediate Basin Name _,,..,S1t{,J_,n)-f7,--'---"~"~c...Jf!::---___ _ Flow Control: Flow Control Facility Name/Number __Jf,'-'.D"'""''"h"-"'d-""L/_,/'--'+=c_,fc........p=oLnud.,__ If none, Flow control provided in regional/shared facility (give location), _____________ _ No flow control required Exemption number ____________ _ General Facility Information: Type/Number of detention facilities: _/_ponds Type/Number of infiltration facilities: __ ponds vaults tanks tanks trenches Control Structure Location ---'-N_,._,l14'.ILJ_-1.C.,0.,_r::LLIJu(C-Ll"___:0=/'--1/?IJ=:,:':'-,..c(:c:L _____________ _ Type of Control Structure _ _,,C.,,'IJ'<-·___,tJ"-ie'-'1c:.h,._q,,,.' :.......,£c=_,,g,,· ~.r__ Number of Orifices/Restrictions _..:c;Z ___ _ Size of Orifice/Restriction: No. I '2,19 No. 2 _..ec2,._,. ~._,'f,__ __ No. 3 ______ _ No.4 _____ _ Flow Control Performance Standard level 1 · Live Storage Volume -~f,,,_ __ '9.,,_._(;,"'---"'}'-f.,_ __ Depth _......:;t--___ Volume Factor of Safety ______ _ Number of Acres Served __ 7..L,c..,,1Jc..'3.,_ __ _ Number of Lots ___,J"-9'--'-1_,~..._--- Dam Safety Regulations (Washington State Department of Ecology) Reservoir Volume above natural grade 121 t 19 C;: '!. Depth of Reservoir above natural grade __ _,/_' __ _ Facility Summary Sheet Sketch (~Ad, A 5 ->-L< p llv>\S) All detention, infiltration and water quality facilities must include a detailed sketch. (I I "xi?" reduced size plan sheets may be used) 2005 Sulface Water Design Manual I l/.l/05 • , KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL Water Quality: Type/Number of water quality facilities/BMPs: biofiltration swale ___ sand filter (basic or large) (regular/wet/ or continuous inflow) ___ sand filter, linear (basic or large) _! __ combined detention/wetpond ___ sand filter vault (basic or large) (wetpond portioi@,r large) sand bed depth ___ (inches) combined detention/wetvault stormwater wetland ___ filter strip storm filter ___ flow dispersion ___ wetpond (basic or large) ___ farm management plan wetvault ___ landscape management plan ___ Is facility Lined? ___ oil/water separator If so, what marker is used above (baffle or coalescing plate) Liner? ________ _ __2___ catch basin inserts: Manufacturer S+ol'.f'!Y..<JcJ-e, 5 (,,_{) ___ pre-settling pond ___ pre-settling structure: Manufacturer __________________ _ ___ high flow bypass structure (e.g., flow-splitter catch basin) source cont.rots------------------------- Design Information Water Quality design flow __ ..:0=,0"'-"5''----"cf,.,"-''-------- Water Quality treated volume (sandfilter) ________ _ Water Quality storage volume (wetpool) __ 2"'-"&;'-l/-1..,"""-f]_J___,cf""-- Facility Sununary Sheet Sketch ( ~rul.,~':5 -~ pl""s) All detention, infiltration and water quality facilities must include a detailed sketch. (II "xl7" reduced size plan sheets may be used) 111/05 2 2005 Surface Water Design Manual 'F\1.:>e-\J-€... ~ \Jc\~ p \ \ es,..,r--.l,; ~ ~IP""f'"'"'--":'s::~l~e-a~ ..... ='.?~....>:.;,.;z;-""'-==,I) '. c.~ ~v-~<.,..:)~ ~-'"'-'f''"'--"'"'-.....:S ? ~.-\: +=-de--~. ~ 1'k~ l \-J~ ;-p .___,.,.,,... ~ I..;. -::S '--'-" ~ ,;:p=v ---\-,o-. -\-= b.e:... d.~ ,L --\-.... ~-C. M .. ---. -:Se,., .. r -\,= '?-.tw ='"°'-\-~ :::£ t.9. c~:st t,._j ' C.IC-c::,~ I,; 'i2j IA../ r,e,c.6-<,. ~o\,--,;,,.e..-t ~' \,.--\_, ~ ~ ~ '"1-D lr"\.~-\-..1.l ~ \ ,~ e.~T =""' ~'c:: l~"'Z... ~- 5 E \ C\ "Z N2S\ µ..,,_..__.~ ~c..e..,\le.d 5 t·-'\, \le~ e ~',_.-:.t__ c\e \ertJ -f'.,.-.e;,....--. 4t-._ \ ~+. \ eR+ 3= Jc-= -\: .... , ,p:::, ~-,~, ~ t__o:'.:::, F:- v. 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':::j ._._..__.,Q_, ~ / -~ ~ L .. ~~'t-\_o* "'-)~ :p\ ' , ® King County Department of Development and Environmental Services 900 Oakesdale Avenue SW Renton, WA 98055-1219 January 5, 2006 Charles Spaeth 6839 Ravenna Avenue NE Seattle, WA 98115 RE: Notice of Request for Additional Information or Studies Application No. L04P0002 -Fleuve des Voiles Subdivision (formerly Soos Creek) Date Filed: February 4, 2004 Date of Complete Application: October 1, 2004 Dear Mr. Spaeth: The purpose of this letter is to notify you pursuant to King County Code Title 20 that the Land Use Services Division is requesting additional information and/or studies to complete the review of your project. The information is described on the enclosed plat screening transmittal. When submitting the requested information, include a copy of the plat screening transmittal and retain a copy for your records. Provide a cover letter, which lists how each item, was addressed. Any clarification or explanation of the submittal can also be included in the cover letter. Please submit the information to: King County Dept. of Development and Environmental Services Land Use Services Division ATTN.: Chad Tibbits, Project Manager 11, Current Planning Section 900 Oaksdale Avenue Southwest Renton, WA 98055-1219 If the submittal is hand delivered, submit at the address above. Your application is on "hold" from the date of this notice, until the date you are advised that the additional information satisfies this request or 14 days after the date the information has been provided. You will be notified if the Division determines that the information is insufficient. Please note that the supplemental information required after vesting of a complete application shall not affect the validity of such application. The deadline for the submittal of the necessary information is April 5, 2006. In the event you feel extenuating circumstances exist, which may justify an extension of this date, you may submit such request, in writing, for consideration by this Department. Failure to meet the deadline shall be cause for the Department to cancel or deny the application. ' If possible, please submit all of the information in one package. If you have any questions, regarding the additional information or the submittal deadline, please call me at (206) 296- 7194. Siew~ Chad Tibbits, roject/Program Manager II Current Planning Section Cc: Kim Claussen, Project/Program Manager Ill, Current Planning Section, LUSD w/enc Bruce Whittaker, Senior Engineer, Engineering Review Section, LUSD w/enc Nick Gillen, Senior Ecologist, Critical Areas Section, LUSD w/enc Larry West, Environmental Scientist, Critical Areas Section, LUSD w/enc Kris Langley, Senior Engineer, Traffic & Engineering Section, KCDOT Application File w/enc Short Plat Application (File No. L05S0040) w/enc King County Department of Development and Environmental Services Land Use Services Division 900 Oakesdale Avenue Southwest Renton, Washington 98055-1219 Plat Screening Transmittal Preliminary Plat Application of Fleuve Des Voiles (formerly known as Soos Creek Plat) LUSD File No. L04P0002 Date of Information Request: January 5, 2006 Deadline for Submittal of Information: April 5, 2006 Please provide ten (1 O) copies of the following, unless otherwise noted. Drainage: • A drainage adjustment is required from Core Requirement 1, to combine the onsite subbasins and changing sheet flow to concentrated flow. (see drainage bullet 6 our March 17, 2004 screening letter). Please clarify the conceptual drainage plan, it is unclear if stormwater infiltration is still proposed. Note that infiltration does not appear to feasible. • We are concerned about the suitability of a storm water infiltration pond for this project. Based on a detailed review of the project geotechnical reports, the exploration pit soil logs and information from previous nearby projects, we are concerned about the infiltration rate, the depth to ground water during a very wet period of time and the infiltration of storm water into the toe of a slope that may not be as stable as ii appears from the available site information. Thus, we recommend that you seriously consider replacing the proposed infiltration pond with a detention pond. Please contact Larry West at 206 296-7131 or Bruce Whittaker at 206 296-7211 if you have any questions regarding this recommendation. Traffic/Roads: • Please confirm that the horizontal curves on the plat street comply with the criteria in Section 2.1 OE of the King County Road Standards, or submit and receive approval for a Variance to approve any non- standard design elements. It appears that the horizontal curves near Lots 23, 24 and 25 (for example) would require the use of the 100-foot centerline radius since the central angle of the curves is less than 75 degrees. • Please confirm that 122nd Court SE and 123rd Place are proposed to be private access tracts. The proposed turnarounds do not meet the KCRS requirements for radius, and, since they are proposed, the deviation from the standard radius (40-feet) will need to be approved through the Variance process. • Please show the required sight-line (stopping sight distance) for an eastbound vehicle on SE 191 '' Street on the approach to the 123rd Place SE intersection. It appears that this may require some limited additional dedication across the southern portion of proposed Lot 5. • The proposed 12-foot off-set in centerlines between the proposed north and (existing) south leg of the 124"' Avenue SE/SE 192"d Street intersection will require approval through the Road Variance process. Please submit an application for a Variance to Section 2.1 O of the KCRS for this item (as well as any other non-standard design elements). Approval of the Variance, or a redesign to fully comply with the Road Standards, must occur prior to the hearing for this project. Critical Areas: • Three outfalls are shown within the wetland buffer (Tract A). The outfall locations can be permitted provided they are located as far from the wetland as possible. The outfalls would be considered allowed buffer impacts and would require mitigation. • To minimize buffer impacts for road construction structural retaining walls will be required for new road construction. Grading for road construction is not permitted within sensitive area tracts. Fleuve Des Voiles (formerly Soos Creek Plat) -L04P0002 01/06 • Utilities are not permitted within wetlands regardless of construction techniques. This activity would require a Reasonable Use Exception (RUE). The RUE would run concurrent with the plat application and would be presented at the plat hearing. An RUE is difficult to obtain for plat applications (A PAUE would also be difficult if applied for by the Utility). • Impacts for utilities (off site sewer connection) require restoration as mitigation plus additional mitigation at a 2: 1 ratio due to temporal loss of wetland area. Under ground utilities may need to be up graded, repaired, or replaced at any future time. • A portion of the area shown as buffer to be enhanced in the conceptual mitigation report is off site. Mitigation shall be on-site. • A portion of the area shown as buffer addition is located west of an access driveway for the proposed detention pond. This area would not be counted as buffer addition. • Mitigation suggestion -remove invasive species from Tract A and plant Tract A with native trees and shrubs. To Contact Nick Gillen, Senior Ecologist with questions regarding this requirement at (206) 296-7141. Recreation Space: Submit a conceptual recreation plan that indicates the type of improvements (i.e. sport court, play structure, benches, landscaping, etc.) proposed within the recreation tract(s). See KCC 21 A.14.180(E)(2) for equipment requirements. Walkways: Provide an inventory map (i.e. existing conditions -widths, surface type, etc.) of the walking routes to the elementary, middle school/junior high, and high schools and/or the appropriate bus stop location associated with each school. Identify any improvements necessary to provide safe walking conditions. Letter(s) of Intent: Provide a letter(s) of intent from King County Parks and other affected property owners indicating the willingness to dedicate the necessary right-of-way and construction of 1241h Avenue SE as well as additional improvements within the park (i.e. the walkway, landscaping and drainage facilities). If these letter cannot be obtained. the plat must be redesigned. Field Survey: Provide a copy of the base topographic map stamped by a Licensed Surveyor in the State of Washington. BPA: Provide a letter of intent from BPA regarding the placement of the drainage facilities, and road improvements proposed within the easement as well as the ability to dedicate the drainage tract and additional right-of-way as necessary. Regional Utility Corridor: Per KCC 21A.12.140 regional utility corridor shall be contained in separate tract(s). Please revise the plat to place the utility easements(s) in separate tract(s). Please also identify the tract on the face of the plat. This may result in the reconfiguration and/or loss of lots. Non Building Tract(s): Tracts H, I and J have been identified as non building tracts. The division does not support the creation of non-building lots or substandard lots. Please revise the plat accordingly. Revised Preliminary Plat: Provide 25 copies of a revised preliminary plat, as necessary, as a result of above-referenced requests for additional information. As a result of the review of the information, additional information (studies, revisions, etc.) may be requested at a later date. Further evaluation of these issues may result in the reconfiguration and/or loss of lots. Fleuve Des Voiles (formerly Soos Creek Plal) -L04P0002 01106 ~~~~-. '\= \~v..._ ~·,;.,. \J e, \.,.~ Lo C\-\"" ~4-b a....-...~ BLUJ. ' . 41~/, t~ . . a.. s-t I.) b <..'.:,,"'co::.....::, ~ ho-~ " '"'t e ~ v...> ~ <\-s,.~ ,. 'P \o..--l ' " .. ~("lev ._ 6--= ~ \ ~ 5 """= __,_;,.<2.. J. c.J\- ~ v..:,~~ * \ ; "'--'--~ s. <?> ..... ~ --~ \I\O~ t}2) \\',-\ ~'-I\ T .. --. t , .. D.....,_,.--.~ b~_s=,.-t,, · ~ ~ ... J~~ .·~va..~~~ ... ~,,;:=--'<: .. I..V--..~;6~~ B"" \ 1,.. s. ~z..-e. ... 12.4"iS-: ;) ho-,__;, ~~ 6.~L---t IA.J°) I ... ,W. "'-""-l .,..._, ~ o f-,oc...-J.. / .-, e.¥... -t-~ o ~ .,. ~J.__ ... ca... ~~e'-" '-~ l ,-c..c..,-\-13, ~ C. . . __ o\oc..-o.G ~c,_,\.\. 1..= ~ .:..c c::.0oc:t--~ c..., ..... t,, G~ hfTURJ>I TO. Lily Jane Evans ADM-ES-0500 King County Property Services Division 500 4•h Ave, Rm SOOA llt,11,111111111 CHICAGO TITLE QCD ~,z10 . Scallle, WA 98014 PAGEHl OF 994 · 18/17/2985 09:38 KING COUNTY, LIA E2162211 18/17/2885 19:25 KING COUNTY, LIA TAX $10.88 SALE $8.08 Reference No. 'f' Grantor: Gregory J.Huffinan, Joy E. Huffman, Paul A&trnst f;RtJsr Grantee; King County PAGE991 OF 801 Legal Des: The East 30 Feet OfLot 2 OfKing County Shortplat Number 278113 Tax ID#: 619900-0262 QUIT CLAIM DEED The Gnmtors herein, p Gregory J.Huffinan. Joy E. Huffman, Paul A:&rnst $.tJsr pursuant to dedications of property for a public purpose required as a condition of a development permit, for the consideration of MUTUAL BENEFITS conveys and quit claims to the Grantee, KING COUNTY, a political subdivision of the State of Washington, all interest in the following descnoed real estate: THE EAST 30 FEET OF LOT 2 OF SAID SHORTPLAT NUMBER 278113 OF KING COUNTY WA"HINGTON ~°"c~r '1!300 2.-'o Io 1..-°6 See Exhibit "A" attached hereto and made a part hereof. L. 7 / l,.J I L ,::;, . s;,.,.,,., ~ H 3'1 O I J -1/ O ,,,::...- Together with the right to make all necessary slopes for cuts lfnd fills upon the abuUing property on each side of any road which is now, or may be constructed hereafter on said properly. in confonnity with standani plans and specifications for highway purposes. Situated in the County of King, State ofWllllhington Dated this ,Jo_ day of__,..-\'--"lvY\::=_,,..,Ll."-"~><..=.:c-1,.-~, A. D. 20v0C>"'--J'-/'--- blf jQY!J J Huffman ?~c\c S \'M N\.(1J'{\ ~ - \-t«f._ ~ (j.._ c,0p 0 a .P.- ~ {l t.ovo\.f cl Q::,(,\J . .fuy l.o'-f~o008-, ~c,.n'(s- CaYn \ 7h 6YY\~ s~ K~c_, £to.1 @tJ.e $prV, • Exhibit A '174:y.v--. I I I TRACTl2 I I I I I . L--'ii' rf' I 'is, TRACT 13 LOTI I I •.- I Ii! ,w;;.;.:.;;...i-L-.' I? I I! ;-I .1: I ,. I 'i •#· .~.· 1 --=---SE 192Wl SJ __ ?,! ·-,.---.-.-6,-1~· •So.f(foor .!?..------·------·-- ' I 1 aX--ii& WASHINGTON SHORT-FORM INDIVIDUAL ACKNOWLEDGMENT (ACW4U .. t00) State of Washington County of _,f--'·"-1 i,)""-'l'I----------- I certify that I know or have satisfactory evidence that ~J~9'j=-+-~F-~H:=µ~f£~rn~"'=fV~--- Name of Signer Notary Public Stale of Woshington DAWNIA M. GREEN My Appointment Expires Jan 2, 2007 Place Notary Seal Above is the person who appeared before me, and said person acknowledged that he/she signed this instrument and acknowledged it to be his/her free and voluntary act for the uses and purposes mentioned in the instrument. Dated: _O=l~-~;,._o_-_o~'t,__ _______ _ Month/DayNear Signature of Notarizing Officer Tie (Such as "Notary Public") My appointment expires DI-DJ..-0+ Month/DayNear of Appointment Expiration --------------OPTIONAL-------------- Although the information in this section is not required by law, ii may prove valuable to persons relying on the document and could prevent fraudulent removal and reattachment of this form to another document. Description of Attached Document Title or Type of Document: _O=•--'~·~f_C=l~"'~;~""~-lli==L=c~f ______ _ Document Date: Ol-;)0,-0 'I Number of Pages: Signer(s) Other Than Named Above: _____________ _ Right Thumbprint of Signer Top of thumb here © 1999 National Notary Association • 9350 De Soto Ave., P.O. Box 2402 • Chatsworth, CA 91313-2402 • www.nationalnotary.org Item No. 5906 • Reorder: Call Toll-Free 1-800-876-6827 WASHINGTON SHORT-FORM INDIVIDUAL ACKNOWLEDGMENT ,.cw, ..... , .. , State of Washington County of ~K=;~"""'Ja------------- 1 certify that I know or have satisfactory evidence that P <1 v, I E c rJ s± Notary Publlc State of wostiington DAWNIA M. GREEN My Appointment Expires Jan 2, 2007 Place Notary Seal Above Name of Signer is the person who appeared before me, and said person acknowledged that he/she signed this instrument and acknowledged it to be his/her free and voluntary act for the uses and purposes mentioned in the instrument. Dated: _O~l~-~J~O~--O~Lf _______ _ Month/DayNear Signature of Notarizing Officer ltle (Such as "Notary Public") My appointment expires 1)1 -oz-o+ Month/DayNear of Appointment Expiration -------------oPnONAL------------- Although the information in this section is not required by Jaw, it may prove valuable to persons relying on the document and could prevent fraudulent removal and reattachment of this form to another document. Description of Attached Document Title or Type of Document: Q,. { Cla ,rn ho eek Document Date: 01-J.0-0 ':I Number of Pages: Signer(s) Other Than Named Above: _____________ _ Right Thumbprint of Signer Top of thumb here © 1999 National Notary Association • 9350 De Soto Ave., P.O. Box 2402 • Chatsworth, CA 91313-2402 • www.nationalnotary.org Item No. 5906 • Reorder: Call Toll-Free 1-800-876-6827 WASHINGTON SHORT-FORM INDIVIDUAL ACKNOWLEDGMENT ,.cw, ..... , .. , State of Washington County of ~K=' =>-l~'j+----------- 1 certify that I know or have satisfactory evidence that 6,re 9 12c "I fh, r:('=cyJ Name of Signer Notary Pupllc: Stole of wastiington OAWNIA M. GREEN· My Appointment Expires Jon 2 'Z007 Place Notary Seal Above is the person who appeared before me. and said person acknowledged that he/she signed this instrument and acknowledged it to be his/her free and voluntary act for the uses and purposes mentioned in the instrument. Dated: __ 0_1-_J..._o_-_o_'-1 _________ _ Month/Day/Year Signature of Notarizing Officer lue (Such as "Notary Public") My appointment expires QI-oz-o·+ Month/Day/Year of Appointment Expiration Although the information in this section is not required by law, it may prove valuable to persons relying on the document and could prevent fraudulent removal and reattachment of this form to another document. Right Thumbprint of Signer Top of thumb here Description of Attached Document Title or Type of Document: O.u:,+ L \«:,"" 'Do ,J. Document Date: DI -J-0·-0 '-f Number of Pages: _}. _____ _ Signer(s) Other Than Named Above: _____________ _ © 1999 National Notary Association• 9350 De Soto Ave., P.O. Box 2402 • Chatsworth, CA 91313-2402 • www.nationalnolary.org Item No. 5906 • Reorder: Call Toll-Free 1-800-876-6827 ----------------- ------------------------------------------------------------------------------------------------------·.,·----------------------~----r----------, \ I CB 24 TYPE 1 ROCKERY WALL, MAX HEIGHT APPROX. 4' - . _ I ~2:lt:F 8" SD @ ·-: I / I -·/ ' ' I I I 111 / i ; i'1 _ I_ __ -·----J I I I I ----···---·' --......_, ___ _ CB 23 TYPE 1 \ I L , , '-..... CB#32 TYPE~ I I ROCKERY WALL, MAX HEIGHT APPROX. 4' !' ' I I I I 40 LF 12" SD . 1 ' @ o. 11 stt/tt I .. S.E. 192ND ST GRADING AND DRAINAGE PLAN SCALE: 1 "= 40' VJ -----' ·--. '· ,, ; .-' ' .f. 24LF8"SD I I \ 0.0:011/ft I I 2TYPE1 11 I I I I I \----- .. \ \ \ CB#l TYPE 2-54" \ \ \ \ I I \ GABION ENERGY DISSIPATER/DISPERSION · \ PIT (PER NICK GILLEN) WETLAND BUFFER/TRACT LINE ~~~~'::'._T-"-Y-,--P"--E_1'::::__·_· I _.__-_I ---,· ·1 I 6-·-··-·---~--. ~~~--------6 ! \. --' I \ Taylor Engineering Consultants 205 Front St. S. P.O. Box 1787 Issaquah, WA 98027 tel. 425-391-1415 fax 425-391-1551 I . I I I I I " ' ~" 12 TYPE 1 l2 LF 12" S ~ 0 . .00511/f ' . ,.....,./ / ~- : : 'i ,,, ,.-,.,· 1', : : . ·" , I I I I I I \ 22 Lf 12 D 1;-l . @ 0.005ft/f ! \ ~o.;~,'+1'1+-'1=,!___!_J.!_e_-'-, \ CIP CONCRETE I \ RETAINING WALL,, \ \ \ { I -I 72 LF 12" SD I @ Q.Q05f\/fj ~ I I I I MAX. HEIGHT 1 '. ., /_! . \ APPROX. 2' \ I I I TYAN 24" ~ CMP CULVERTS \ \ , \ 37 LF 12· $0 ~ '\ 1 : ' @ O.OOSft/lt W ELEV. ;387.0.0 _/ I CB 6 TYPE 1 \ K. 1 1 .,_,;_ ~_,___-r~~~~\:74 ":;,c; ~ _,,c-~~"Cia-'--::=,-; ,.,.,_~":~~~,'.-:.'.i,;-s~, · I I , CB 7 I ! I I I \ / ·3 TYPE 2'-48" CB 38 TYPE 1 ., I . ., •-i I' \ \ I ~--!---SEGMENTAL BLOCK WALL, MAX HEIGHT APPROX. 1 O' . ·, /' ,, . ' \ \ ' I I I \ I I I ! I STORM FILTER MH 40 STORMFIL TER MH#39 I I I I ,.___, ) I ., I ' / /l"r-" \ I. -~-t--~.:::::·· ~=t__:...,/ _J I I I I I SEGMENTAL BLOCK WALL, MAX HEIGHT APPROX. 10' ', 12.5 LF 12" SD I I ' @ 0.005ft/ft Cll§2 TYPE 2-48" i . -. 'I • '_:! i' . ,, /.,~ • ' I M.f , ····· 'ci:i I ' . . --~ I '/ • ;::,.: .,.-~ / ·tti .. E-; .1 , "g- . . ' "" _I .. , . ....,_ \ . ' . ' :I '/ : ' .· . ' 7.5 LF 12" SD @ 0.005ft/ft I ', : j \ \ I I I I \, ECOLOG, BLOCK WALL WQ ELEV,_ 383.QO : ' ' 7. ' --· CIP CONCRETE WALL-~--... 388,00 . ' . . . . . ' . . . . . . . . . . . . ' DATUM ELEV ~---------------------+---------, 375.00 o+oo CO~JCEPT POND SECTION 1 SCALE: 1 "=1 O' R/W <t R/W 390 · · . . . . . . . . . . . . . . . . . . . . . . 30'. . . I · . . . . . . . . . . . . . . . . . . . KC PARKS I , • DEDICATE'.D R/W • • o 5, • I PROPERTY . 0.5 I --· -I "' :~. F---~---~--+-"2 __ 4·~--------fll- ~ ·-.-•., ,'·., _! • .,,2% ,, 2%), . ~i&iiffiiM (l::'o· ''"""'"''"' u·<=>·="'i/l'c~~= ~~"""'""="' tii:kl DA1'U.M ELEV 1---- 380.00 81 LF 12" SD @ 0.123ft/ft i' ' : ,• ,, ' ' \ I \ \ 0+00 ' ' N . I I . ' TYP. ACCESS ROAD (124TH AVE SE) SECTION i ~- I : I . .-• -· I _ I • ' ·/ .. -,·. ··-. I / I' , \ CB 37 TYPE 1 ·' \ '\. SCALE: 1"=5' \ \ I I ~---------~------------ ,1 -------. ' ' . .,. . •'·--\,:--===·-·· _ .. ---~,-~-------~--.. -----"=--·-·==---··-~-~~"'=. M i ",....., ~ ' ,,-,..,.. ·: '°'\~'- ---·--------·------------------,-_,. _______ _ GRAPI-IIC SCALE ( IN FEET ) 1 inch -40 ft. ~~©~~W~[g) MAR 3 1 2006 K.C. D.D.E.S. ;~ ... ' . '"" .\ . I " · :i I , ' i ' '·.. , , I '·:JI'-,.' I CALL BEFORE YOU DIG 1-800-424-5555 FOR FIELD LOCATION OF UNDERGROUND UTILITIES Project: FLEUVE DES VOILES PLAT Developer: Ravenna Development LLC 6839 Ravenna Avenue NE Seattle, WA 98115 Job Data: 1/.C Job#, Drawn,· Checl,ed 294-,!MA WNT RP LMT Authorized Use: {his drowi/Jg ls issued for use in the titled project only. II s-/10// not be used for any other purpoS"e without the express authorization and/or odap/o/ion by !£['. Permit Agency: KING COUNTY EXPIRES 6/10/07 Issued for: PRELIMINARY 9/15/04 Rev. Date --------- 6 /21 /05__ __ ---~-REV. co. COMM. 3/31 /06 ---······------·------ -----··---- ~--------- -------- ------~---------- Sheet Title: CONCEPTUAL GRADING AND DRAINAGE PLAN Sheet No: C-1 Sheet of '---------------------------------------------------------------------------------------------------------,--------------------------'----------1 . I I I I ; i I . I i . l I . ' ! ' i ~---~---J / I f I I ~ \ \ 1-8" 90' BElD (M_J}___ · W/ THRUST iocKING ~ ---------- I I 166 LF 8" DI W 10 LF 8" DI W CONNECT TO EXISTING 8" DI W i / I 14 LF 8" DI W / I -I ----------~--~ 15' WATER 40 LF 8" DI W I I EASEMENT -+- 1 ---' j ! I ____ \ ------__ / I ' . -----., ' --------'--------,----·ccc __ : I - I 1 · ___ . - I I gj LF a" PVC! ss @ 0.076ft/ft ..- \ .. : '. ..... J ! . I I - ----•-·--··---------~-------1111 _J , 1 · I I I I : (_ .. i ' I ._ __ - I I I I; , /' 0 !I I 1\ I' I i / -----/ ' " .... - / / ' 59'1tF a"\rvt. . ss @ 0.137ft/ft / SSMH~N RIM 432:7 II: 422. 71 I I I I 'I i MH-L . I I I I RI 449.ll3' I JE 439.93 ,,': ''i ' ' :' I I ' ( :- I SSMH-P RIM 433.05 I I I I I i I I I I I \\ \, --,, \ \ . ·-·,, \ \ 1-8" CAP AND PLU~ · ---. ~- ----~---·-', -----~--·- =~I ---.. -------------~ I I I I I j --/ #/ ;· • ,\ I , SSMH-E I RIM 422.17 -I • I ._) //1 4 F 8" I / f / I I ,, 'I' ' f --. • '· 1-8"x8"xi• · E (MJx ~x;L) .. - W/ THRUp' _ LOCKING 1 ,6" GA "iE y LVE (FL MJ) 25 LF 6" If I r '{''') 1; ! r,· - I \ \ \ \ I \ ' I \ 0 \ I I !! '1 / ! I ', / } I I SSMH-B I RIM 390.84 IE 380.84 I ''/"'t< ' '· .. ' ' I \ ' ' ' . ' • I<'--------\ • ;r • • \ ------·------~ ------_.J f----------- I I ., ._, ' , ' . ; ' SSMH-M RIM 411.00± IE 401.00 ' ' . ' i ' I I 1 • I I I - SSMH-L RIM 386.36 IE 376.36 / l -" --· / i \ ' .! ~ "' '. 0 \-'. s:: q -0 Cl ' 1@ 1,00 (/) 'b VJ I . u ·LO >. + ,a. . ,,, ' . ' 00 ' f : ' l ::i . /. I~ •.,', I' <" . . . ' -; ,,,, -, ~·" 'f I ', •,' ' ' -,,, '''°'" ' ,.. ' ' -, I 3" ci 'ix:, '.i ~I 10 '~ .. -·' . I I '"' ' . I . I I . I I I J.\.--- ----s @ o.1141t/lt -_. -"'_., -190 l.f -'ff' \''IC S -! I ----· S.E. 192ND ST N WATER AND SANITARY SEWER MAIN EXTENSION PLAN SCALE: 1'' =40' GRAPHIC SCALE ( IN FEET ) \ ·/ l _/ ; .·• \ / I I I \ ' " t' \ \ ' \ \ \ I \ \ I \ \ I I SSMH-A RIM 383.85 IE 373.85 \ \ \, \ i \ \ ~ ./' 1-8"x8"x6" TEE (MJxMJ fl) I W / THRUST BLOCKING 'i 1-6" GATE VALVE (FLiMJ) 1-FIRE HYDRANT 18 LF 6" DI W I I 1-8" CROSS (FL) / I 1-8" GATE VAL1-(FLxMJ) / _-- ' . \ ' --·' I \ \ '\ \ . ., " ... _ ·- i \ ' ·,, \ I '-. \ ' "\ ·-- I ·, ----~- \\ ' CALL BEFORE YOU DIG 1-800-424-5555 FOR FIELD LOCATION OF UNDERGROUND UTILITIES Taylor Engineerir1g Consultants 205 Front St. S. P.O. Box 1787 Issaquah, WA 98027 tel. 425-391-1415 fax 425-391-1551 Project: FLEUVE DES VOILES PLAT Developer: Ravenna Development LLC 6839 Ravenna Avenue NE Seattle, WA 98115 Job Data: rte Jo.b /11 Des,!)nee,',. JJra wn Checl,cci 2~4 jmg WNT RP L,MT Authorized Use: !his drawing is issued for use in the titled project only. II shall not be used for any other purpose without /hf! express authorization and/or adaptation by TEC. Permit Agency: KING COUNTY I EXPlRES 6/10/07 Issued for: PRELIMINARY 9/15/04 Rev. Date ------- l REV. LAYOUT 6/21/05 -------- CO. COMM. 3/24/06 -..--~ ----------~ ------------ Sheet Title: PRELIMINARY WATER AND SAN. SEWER MAIN EXTENSION PLAN Sheet No: C-2 Sheet of 480: 460: 440: CL INTERSECTION '192ND :AVf. .. SE. I 420; 0 N + 0 ci5 u > en 400; . . 0. ~ - 380; f)ATUM ELEV 365.00 0 ,,; 0, "' 0+00 -N N ~ w u > co 124TH·AVE. SE PVI STA = 1+00 . . PVI ELEV = 385.50 · . · A.O. ·=· 7-.22 · K = 22.15 160' VC • 00 ..,. 1· p N ~::, w Zo ~ ,....~~ er, ,..., I"') ci ,-.... (,0 "' Ol cx:i co trl r,-... ·I'+ :,;; "' "' 8 -ww o::_ - 0 . -Ll7% 327 tr' 1~' :SIJ@ 0.005ft tt ' 0 . <O "' <O -·-"' 0 :g + ro "' "' + II II "' ~ ~ ~ w (/) en .5. > Q_. CL :..o.36% ... I· . I . I • I • I ... I· LOW POINT ELEV = 382.94 . . · tow 'POINT STA "' 3'+62:26 · PVI STA = 5+10 PVI ELEV = 382.40 A.D. = 15;35 K = 20.18 · 310· ·vc · ------------------------------------------ !;j' I ·o, "' "' 0) N :r: co :,, ,,., 0: .. ~ 0 w ~ §: ;:;~ '° [D 00 • <( ,,; .... :a "' g I oo ,,; ·"" . ,..., . •:J! t0 ,-... . ~ :aw "' :a ,..., (/) "' -(/) -w V) 0:: , . . . . . SE 191ST ST. ..., ..., "' 0 . ..., ,.... . I -r-- :r: ... ~ :a "' "'-w (/) a::: - 6:i LF 8" PVC ssl @ 0.147ft/ft . . • • . '. • 18 lF 8 PVC SS@ 0.005ft/ft · 112 LF 8" PVC SS @ 0.063ft/ft 138.5 LF 8" ·PVC SS @ 0.073ft/ft 67 ~F 8" PVC SS .1.,.. . .,..,...,....,..,....,...,_,...,..,....,.....,...,..-,-;-:--;-'c:-;-;-:--:-:-:-:---:-:-·-:--:--:-,--;--:-';'-7-:--:--'c' ~---,--,-~-------------l,-------------l---------,-,---:-::----J--. -@L.•0-.2-45_1\....,/f-f --I 0 g 00 ... N "' ~ ~ ~ ~ ~ 1+00 CL INTERSECTION 191ST ST. SE 440 420 f)ATUM ELEV 415.00 (I I Iii) II @ 0.005ft/ft '78 LF· 8": PVC ss· @ 0.010it/ft N -"' ~ . 1· • C-1~ (T) • c,J N 't ':;. I i lJU 122ND AVE. SE PROFILE SCALE: HOR. 1"=40' VER. 1'=10' ... :::i "' "' .... i1i ..f "' 13 ~ ro "' "' "' 2+00 .... ,.... N gi 0 0 "' 0 ~ -ro ,,; • ,,; ~ 13 icl ,..., ~ ~ ~ ro ro ~ "' ..., "' "' 3+00 4+00 5+00 124TH AVE. SE / SE 191ST ST. PROFILE SCALE: HOR. 1"=40' VER. 1 '=1 o' CL INTERSECTION 124TH AVE. SE 460 I I N -+ 0 jl50: II --; r--<( w , __ I ("\I t--! !- :JC .... _ (/) ~ :::E ~ 5 -w 0.. 0:: - 420' f)ATUM ELEV 410.00 () I CJ(i ..,. "' <O ~ ii ~ w > CL .~ .L,,J .s;: •• >'- p -~::, w· . · £c ·O · G-. ...__......_... r.:•u=;~ '° <D NN "' ... . ' ~~ 1 Z9 LF 8" PVC SS @ 0.143ft/ft : I , ,. I ' . I \_} I 122ND CT. SE PROFILE SCALE: HOR. 1 "=40' VER. 1"=10' ,n <1 (_() ('J -,/ -1 ~.j-,1 "' ~ ro <O 0, "' "' "' ... !;I! "' • ~ ~ .... ~ ~ 6+00 00 -:;;: N -"' .... "' ~ d cri o::i £il ~ :;;: :;;: :;;: 7+00 8+00 @ 0.005ft/ft 95 LF B'. PVC SS @ 0.0661\/ft : :;;: -00 ,...., "' ~ E,l ,..: ~ ~ 9+00 ... • . : . • • • I • • • • • " • • ! • ,,-... . "q': I 69.5 LF s· PVC ·SS 84 Lf: 8" PVC ss @ 0.143ft/ft : 97 LF :s·~ :ss @ 0.076ft/fi ,-----~· ----1------------1----....;..._.cc._ _______ [ .@. 0.277ft/tt:. ... ... . ' . . . . . :;;: -:;i 0 '° ,..., "' ! 1 c,.i <ri c,.i ~ ~ ~ ~ 10+00 :i'l "' ..f "' .... ~ r=· :· I Cl): w: ;_J :· -LL: o: a::: a:.: W· w: 00. :. .......... w: Z: -_J: . . . . I: 0 1- <C< ~ 11+00 ig ~ -"' GRAPHIC SCALE ( IN FEET ) 1 inch = 40 ft. CALL BEFORE YOU DIG 1-800-424-5555 N o::i "' 12i FOR FIELD LOCATION OF UNDERGROUND UTILITIES Taylor Engineering Consultants 205 F rent St. S. P.O. Box 1787 Issaquah, WA 98027 tel. 425-391-1415 fax 425-391-1551 Project: FLEUVE DES VOILES PLAT Developer: Ravenna Development LLC 6839 Ravenna Avenue NE Seattle, WA 98115 Job Data: rec Job 11, !Jeszqned,' J)ra irn: Checl<ed, 294-jma WNT RP LMT Authorized Use: (his drawing is issued for u::i·e in the titled project only. It sho/1 not be used for any other purpose without the express authorization and/or adoptotion by TEC: Permit Agency: l(ING COUNTY EXPIRES 6/10/07 Issued for: PRELIMINARY 9/15/04 Rev. Date ·--- REV. LAYOUT 6/21/05 • ·-·-·---. CO. COMM. 3/31/06 ----'-·---·------ ------------····---~-- ---------·~--~--- Sheet Title: PRELIMINARY ROAD AND UTILmEs PROFILES Sheet No: C-3 Sheet of ' I I .......... '(Y). . I . . . . . . ·O . . . . 8" PVC SS @ 0.143ft/ft . 97 LF 8" PVC SS @ 0.076Jt/ft • -"' :;i o, '° ~ N ~ ~ ·00 -· F .. :c Cl) w . ....1. ·-LL 0 a: . :o... w w Cl) . -.-. . . . . w :z ·-:....1 :I :~ <( > :!? "' .... ~ ~ ,...: ~ 11+00 "' ~ ~ ~ HIGH POINT ELEV = 473.42 HIGH POINT STA = 12+36.38 Pl/I STA = 12+22 PVI ELE't 489.22 . ' . ' ' . . "' 5 ~ s 12+00 . = -2 ' . K. -:-15.9.6 ... 450' vc . ' . . . . . -~ ,...: ,.,-; ~ ~ 122ND A VE. SE . : . ' . . . . 1.49 LF. 8" .PVC SS.@ 0.087!!/11. • . . . . ' ' . . ' . . . . ' . ... "' ro "' 8 -"' ,.,-; -~ "' ,, N 0, ~ "' ~ ~ ~ -a- 13+00 14+00 0.0 <O ~ - 69 kF-~~ PVC-SS· @ 0. 137ft/ft . . . . . ' . . ' 105 LF 8~ PVC SS @ 0.141/t/ft . . ' ' N "' "' N <O ;;:j --,...: 0.0 "' N ~ "' "' ~ ~ ~ "' ~ ~ ~ 15+00 16+00 122ND AVE SE / 123 AVE SE PROFILE SCALE: HOR. 1"=40' VER. 1"=10' (ROAD CLASSIFICATION -SUB ACCESS, DESIGN SPEED 25MPH) <t23RO · AVE. SE:- · 155: LF 8"· P-VG SS :@ 0.13-2/t/ft· L.~ . ;-------;---,---,--------~-, . . i l I l PVI STA = 18+57. Pl/I ELEV = 405. 40 · :A.I). · = \0:89 · : · K = 22.95 250' vc ·.::--~:::, Zo LIJ N e,; ,._,, Q-1--('f N i::: a; r-,.... (0 . . o· ..... n "<f" tO. w ,.,.. ~-~ CD ::i:" w· W UQ'. __ • 35 LF 12~ SD @ 0.2151\/ft ·. • • · 37. lF 12 -SQ @ 0.005ft/lt ' • , / , . . 71 LF 8" PVC SS ·150 LF 8" PVC SS @ 0,005/t/ft I -, • . @ 0.194ft/ft . ' . N "' "' N "' "' <O ,.._ * ,.._ 0, ~, 0.0 ,.._ "' -"' 0, "' ro N ~, ... ~ ~ • ~ N <O en "' ~ "' ~ "' ~ ~ ~ ~ -~ ~ ... ;,: ;,: 17+00 18+00 19+00 ~2.31% . .. • . . 0 ... ~ -N ~ 20+00 "' ,.,-; ~ GRAPHIC SCALE ( IN FEET ) 1 Inch = 40 ft. CALL BEFORE YOU DIG 1-800-424-5555 FOR FIELD LOCATION OF UNDERGROUND UTILITIES ·raylor Engineering Consultants 205 Front St. S. P.O. Box 1787 Issaquah, WA 98027 tel. 425-391-1415 fax 425-391-1551 Project: FLEUVE DES VOILES PLAT Developer: Ravenna Development LLC 6839 Ravenna Avenue NE Seattle, WA 98115 Job Data: /lC Joo h• 294-ima JJes(()ned· l)ra wn· lhcct,crl WNT RP LMT Authorized Use: • This drawing is issued for use in the tilled project only. II shot/ not be used for uny other purpose wit/Jou/ the express authorization and/or adaptation by T[C Permit Agency: KING COUNTY • EXPIRES 6/10/07 Issued for: PRELIMINARY 9/15/04 Rev. Date REV. LAYOUT 6/21/05 CO. COMM. 3/31/06 ----------------- --------------- ------------------ ---------- ------------- Sheet Title: PRELIMINARY ROAD AND UTILITIES PROFILES Sheet No: C-4 Sheet of ' PROPERTY DATA PROPERTY ADDRESS: 19100-124TH Ave SE LEGAL DESCRIPTIONS: See Survey -· Sheet 2 TAX ID#: 619900-0260 -0240, & -0220 SIZE: 6.9 Acres with one existing home on -0240 ZONING: R6 6 du I Acre WETLANDS: None on site, adjacent wetland buffer impact STEEP SLOPES : Areas at 38-42% with 10 to 20 foot Rise AVERAGE SLOPE= 100' /612' = 16.2% FLOOD ZONE: None PREVlOUSL Y LOGGED: No Marketable Timber DRAINAGE COMPAINTS: County drainage fro.m 192 street onto adjacent private property-400 feet from subject site DRAINAGE BASIN: Soos Creek WATER PROVIDER: Soos Creek Utility District SEWER PROVIDER: Soos Creek Utility District SCHOOL DISTRICT: Kent FIRE DISTRICT: King County TRAFFIC CONCURANCY ZONE : 799 (Approved) OWNERS: Parcel •0260 B & J IP LLC 13425 E Lake Kathleen Drive SE Renton, Washington 98059 Parcel ·0240 James Thompson 12208 SE 192nd Parcel -0220 12.216 SE 192" Renton, Washington Janie Ritz Renton, Washington PROPOSED SUBDIVISION DATA PLAT NAME: Soos Creek DESCRIPTION: 6.9 Acres to 35 Lots (5 .1 du I acre) LOT SIZE: Width = 44 to 75 feet Length = 82 to 120 feet Area = 4,750 to 6300 sq feet PUBLIC ROADS: 300' of 24' Subaccess Street at 14% slope (serving 20 du) 420' of 22' Minor Access Street 14% slo~ing-t41u) PRIVATE ROADS : · L I Four 150' Private Access Tracts (serving 6 d ea h) \ SHARED DRIVEWAY: Four 20 feet wide \ INDIVIDUAL DRIVEWAYS: thirty five 16' de-__ _j SITE DISTANCE ISSUES: None, distances exceed 800 feet SENSITIVE AREA ISSUES: 100' Wellan,d EMier 9rcroaches 40% k1ope are~ STORM WATER FLOW CONTROL fOUIRMEN : Level 1 STORM WATER QUALITY REQUIRrE~T: Basi Zone DEVELOPER & APPLICANT: _____ r ENGINEER: Contact Rick Boston Boston Design and Development LLC · 13425 E Lake Kathleen Drive SE Renton, Washington 98059 Phone 425-226-2145 Fax 425-228-3653 Jacques Consulting Neal Jacques PE 2633 SW 163 Place Burien, Washington 98166 Phone 206-242-5322 STORM WATER CONTACT PERSON: Rick Boston I ~ " I ( .,. \ "' " " ' I I': " \ \ ) 800'SIGHT DISTANCE SOOS CREEK PLAT SITE PLAN A PORTION OF THE SW SECTION 33, TWP. 1--1 i I 1-- L _______ / ~~ .. ~->---.. ____;, r. 6"(91 I / / / x.----x..---- ' i . \;i· I • • ,LS 1 ,-,.,...,;t~s~o-__. ____ ts . 30.27" i I \;../·)· ·"· ' 1-----:-----.~ I ,. I I ' I . . . : 1------I I / I i--, I \ 1 L.. ---_JI i I I / I 'L : / • I l : II I ' I __ : J \ \ 11 I\\ I\C) ,,. I \-I\ 11 / 11 cu I I 1,1 1 r ·-.,, I I 1i--· -11 I I / ;t I I J I I \___./ hi,/ i r-·--1 ;· i "'I /" / ¥ I 1·:---, I I I ---, I I / s ,-----I \ I i ~ /1' i' /(1(;! ,J I I I I ~ I I I l ___ _I_J I ~ 1, I I I 01 I ,, I I I J I I I ,;,. n 1 (;? !i)i~ / ~ -----'-·---' ~ f IM,$ /1 \ I I I I / I ""( j I j1 ;,/ :---, I , I I ..,,,.. I I ,i,.o L ____ [ I:: r. ,, .Z8 I )~i I ere "' g I. "' I (lJ • / gg .os I I I I . I 1/I· I 0 1 t I Ii / -·· I••-----< /, .. :Ii, .... _1~--~/~1_'_/ __ l_~-t-l--'J'!-!-fl-+--+-+-1-' -r-1'-+I-, II I\, I i. -.. ".'~"''-_, . . . . } ~°"°~~~ ·' I 02<>"5<0IV p,WM ,- // '-., / rl".,..PJ ._.,,.,_ i r-1 " 1r. , · 1:1 nolris 13/\V s· I . . t'i \ . ·. • • .. \·. • •5;' .'\O .... , :. ··Q .·• .. • ' __ · • \' ' -. • ·• 1. I .-.' •. • • .,,_... '• .. ·' : ,• • .'· ' . (f; ,Z · ·· ,_ •• ;' , 1 cr< !'! ? " ·, · " c'.'\ £1 ··~ .~ J ;;• :" ~Q ~ ~ ~ '.JIS O/iz6J,W'3t1 ,; 1" r 7 I J i it=;~'.9=::~"~tt-~;"~~J~' ::=:i1~=1~~!i==t==J~F=/;;;::;I i ( ~--r:_ ·t IJ3'f.nnorJS ,,tv~ / 7 /M!q· ;"' >.j , --' .....-. ..--;:, POSTED '-10 MPH . :, ) / .--- 23 N, .. L .JJ RGE 5 E. WM < -<( J IL tJ Q q .J u. Ii 0 (!.I v \\ 0 'LAND 13,UFFER ' 0 (D f'1 "" : . . I . ', .. . i. . . l 12oo'SITE DISTANCE '-10 MPH/ SCHOOL -Z.oNE "z.o MPH W CAP" C. Vicinity Map Scale 1" = 2400' GRAPHIC SCALE 1"-~o· f>•-C le 'P--.....l / ..__tis -~· I . I ~ 50 100 I 150 "2. • ::,..--!, ~ ~'?\....... 3. l~.Q ... ~,;_ ~e:--:,, ' KEY PRELIMINARY PLAT SITE CONSIDERATIONS 1. THE PLAT IS FOR SINGLE FAMILY HOMES, 1HE MAJORITY BEING DAYLIGHT BASEMENT STYLE. LOTS ALL EXCEED KC STANDARDS FOR MINIMUM LOT SIZE. LOT AREAS ARE APPROXIMATELY 5000 TO 6000 FT' AND THE SMALLEST LOT WIDTH JS rFT. ALL DRIVEWAYS WILL BE LESS THAN 12% GRADE. 2. ACCESS ROAD FROM SE 192ND STREET-SEE TRAFFIC STUDY ENTERING AND SITE DISTANCE: PER 98 KC ROAD STANDARDS VOLUMES ARE BELOW LEFT Tl 'IRN LANE THRESHOLD. FOR 192•0 3. PROPOSED STREETS MEET SUB-AC \:i::Gs;MiNoR-ACCESS ~ AND PRIVATE-ACCESS TRACT STANDARllS FOR PAVEMENT WIDTH, CURBS, AND ~~NGTHS PER 98 KC ROAD STANDARDS EXCEPT THAT A. VARIANCE IS REQUIRED AS THE.LENG.rH FROM CENTERLINE OF SE 192 TO MIDPOINT OF FARTHl;ST GUL- DE-SAC. IT IS 1250 FEET AND NO ADDITIONAL EMERGENCY ACCESS IS AVAILABLE, GRADE FOR· PROPOSED SE 191 CT IS 14%. SEE STREET VARIANCE JUSTIFICATION REPORT. ' 4. A MIDPOJNTCUL-DE'SAC JS LOCATED ON THE.PROPOSED END OF 124™ DUE TO THE550 FT DISTANCE IN FROM 192••, AND TO THE FACT THAT A FUTURE EXTENSION OF 124™ IS LIKELY SINCE IT PROVIDES THE ONLY ACCESS TO 7ACRES OF VACANT LANO TO THE NORTH . $; THE EXISTING 124™ AVE SEIS TO Bl,: WIDENED; LENGTHENED-AND PAVED. THIS LIES-PARTIALLY WITHIN 100 FOOT WETLAND BUFFER BUT IS THEONLY REASONABLE·ENTRANCE, SEESTREET VARIANCE JUSTIFICATION REPORT. 6. SIDEWALKS ARE PROPOSED FOR ONE SIDE OF SUB ANO MlNOR ACCESS STREETS. ALONG 124 AVE INSTEAD OF A 5' SIDEWALK, A 12' WIDE PATHWAY, 12' WIDE BIOSWALE STRIP AND 3' TREE PLANTING STRIP BENEFITING THE KING COUNTY IPARKS DEPARTMENT IS PROPOSED. THIS IS IN THE BUFFER AREA RUNNING PARALLEL TO THE WETLAND BOUNDARY .. 7. PRIVATE PARK SPACE OF 13,260 FT 2 IS REQUIRED PER 390 FT' FOR 34 NEW LOTS; 14,849 FT' IS PROVIDED PLUS 3,600 FT' OF STEEP SLOPE AREA JS SET ASIDE IN A SEPARATE TRACT. 8. DRAINAGE FACILITY SPACE OF 20,tiiiOFT' IS SET ASIDE AS A TRACT, ALTHOUGH 60o/o IS RESERVED AS WETLAND BUFFER AREA. I 9. TWO FIRE HYDRANTS ARE PROPOSED, AT PROPOSED SE 191 AND THE CROSSING PRIVATE STREETS, THUS YIELDING 90% OF THE HOMES l/1/ITHIN 200 FEET AND NONE MORE THAN 300 FliET . .. LEGALS ORDER NO.: 1082861 .· LOT 1 OF SHORT PLAT NUMBEFI 278113, RECORDED AUGUST 28, 1976 UNDER )~g~f~~~S~E~~L~A~g~~E~Rx~~~~B6~~¥sig~I~g.A5~0~~68~o¥~T~~CiJ3' PLAT THEREOF. RECORDED IN VOLUME 47 OTHER PROPERTY 90, IN KING COUNTY, WASHINGTON. TOGETHER WITH AN EASEMENT FOR ROADWAY AND UTILITIES PURPOSES OVER THE EAST 30 FEET OF I.OT 2 OF SAID SHORT PLAT NUMBER 278113 . AND TOGETHER WITH AN EASEMENT FOR ROADWAY AND UT!LITY PURPOSES OVER THE EAST 30 FEET OF THE SOUTH 300 FEET OF TRACT 12, NORTHWESTERN GARDEN TRACT!,. DIVISION NO. 5, ACCORDING TO THE PLAT THEREOF, RECORDEO IN VOLUME 47 OF PLATS, PAGE 90, IN KING COUNTY, WASHINGTON. ORDER NO.; 1121061 THAT PORTION OF LOT 12, NORTHWESTERN GIIRDEN TRACTS DIVISION NO. 5, ACCORDING TO THE PL,AT THEREOF, RECORDED IN VOLUME 47 OF PLATS. PAGE 90, lN KING COUNTY. WASHINTON; EXCEPT THE FOLLOWING DESCRIBED PROPERTY: BEGINNING AT THE SOUTHWEST CORNER: THENCE NORTHERLY ALONG THE WESTERLY LINE 300 FT.; THENCE EASTERLY PARALLEL lo/ITH THE SOUTH LINE OF SAID LOT 135 FT.; THENCE SOUTH PARALLEL vlITf THE WEST LINE OF SAID LOT, 300 FT.: THENCE WESTERLY ALONG THE SOUTH LINE OF SAID STREET TO THE POINT OF BEGINNING. r·~=-~ r.··l·o ·'"··c1~·t. ct{ p ~1, w 1 . "'·· ~6~E~. N~r=NG 1 ~~~~~ SHORT FLAT NUMBER 336021. AS RECORDED UNDER i ii""' KING COUNTY RECORDING NUMtER 8902210370; 2,·U,,·'-\ CHEC KED BY ... i?lc~.l;i°............... BEING A PORTION OF TRACT l 1, NORTHWESTERN GARDEN TRACTS l------~------------------------------------------------------_hD~A~T~E~···;···~···;···=···~··=···==========~---~~-·~·~=-------------------~D~I~V~ID~S~I~O~N~N~0~.~5~, ~A~C:C~O~RO~!~NE TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OF PLATS, PAGE SO, IN KING COUNTY, WASHINGTON • • 0 0:: 'sf' U1 i:.l 0 i:q 0 II ~ (\j :::i ' z 'S'"1 lD E-< .. (\j f:£1 u i:£1 ~ i:.:i E-i z <:t: ..., <:t: <( u 0 ~~ lf1 A:: P-, "' ~ ::, CY 72 z ~ 0 ., ~ E-< :r: • SC "' z z 0 -£ l:Q :,.. fl: I>: I"! l:Q z I>: I>: :,; " 0 -i;; l:Q z "' ~ -~ A I>: ~ z f;l ~ I>: ! " u -i5 ~ "' ~ ~ I>: ~ 5 z A A ~ co co ,...., --- . • c., OJ Ol z <:t: ~ ~ C'J E-4 ril " C\l i-::i 0... z C".I ~ f:£1 I.() m-I rn. ~~~ -z ;::) 55 C'J 0 G' ..--. u 0 f:£1 i:.o <t: U 0 >-:, <t: C'J rn. ~---- ....:1 P-. f:£1 ~ <i:: Cf) z ~ i:£1 i:.o 0 O" z ,-< ::t; P-. u is: < lf1 I-:, 17) Cf) co C\l L0 4P 0 002 GRAPHIC SCALE 0 50 ,/ -----CASE MONUMENT BRASSIE. W /PUNCH VISITED 1-26-04 ~ 0 ID (lJ 01 ~· w • (() 0 ('] ~ • i \ '• \ . •. \ '• ........ . 533. 41' (M) '. \ __ _ ··-----... ·······-····························· CASE MONUMENT ---BRASSIE W/X VISITED 1-08-04 ® 1"=50' 100 150 OJ " " .• . .l _ ··~··· \ ...... . "· ,-.;r, ........... ; \~"?~ : 'y) ! .,, .. : ................ . . . . . . . I I R ..____C:.:ASE MONUMENT -BRASS IE W /X VISITED 1-08-04 M p . ill ~ OJ " \'-1 ~ ~ ~ z 05 4 WETLAND "B" ski D 998 SQ F'EET / NON REGULATED /;3--1 0 I ~ 1 02 01 'o 0 SHED T.B.R, r···: ,.......... ; . . . . : : : l : S-.; .. t.> '~-~ 1) :;,1 ('.I I SOOS CREEK PLAT SECTION 33, TWP. 23 N, I~GE 5 E. TOT AL AREA = 7. 71 ACRES WM ---*'A20 LEGEND ~ CATCH BASIN '°' POWER POLE W/ UNDERGROUND '°' POWER POLE ® PHONE RISER IBJ WATER METER 0 FIRE HYDRANT ¥ GUY WIRE @ GAS METER /;,, WELL LOCATION * WATER VALVE ® SEWER MANHOLE @:I GAS VAL VE l!J EXISTING SEPTIC TANK 0 CALCULATED CORNER ~ CULVERT ):::( SIGNALBOX T01'AL PROPOSED SITE AREA= 6.99 ACRES . 0 q g w t8 ~ tj z 0 w > ..JI-oz cnw w.:c a:1-cn w:::, !D, <( ..J w ..JWZ <CZH IH..J en ..J w 1->-u zccz w«w :,: ou.. IZ u :Ju, <!OH O<OI a: 1- U<t ZHQ W>I- ~ 0 z 442-- "' f>) ,,. . ~ g w [fl l§ ~ z .,, J µi : 1· ! Ii;! . . . : : ' !2 ' : l • f'-.: . .... /; " ! z ~ /:' ; (,·.:i .' , . . . ,,,_j O: !,J l'I') : d...,. . ;i'.; . ' --~ , ' C( ' , (D 0 " ( 0 0 " I \ ' ' . , : ! ,,.---- -·--------""''"' . N79 "31 '15"E 50 .77' I f>) ,,. (Q it .7ii..,. 'T " r·~1 ~--,~ !,.~,,} ,. S89"40'54"W 1322.30' (P) 0J "' 7; ")' l"" ,t_j - 0 en '?, (D ('.] " 0 (U C\J --o:r ru " ~ " = = - m. V (JJ tj ~-'y" tj " 0) m 01 <V tj " 0 ~ " -- li:2- " ( 0 Ol "' ' (D 0 0'<> '? I I /1 (D OJ C') . 0 q 0 0 ~ "' CD ~ "' 0 • ~ z 52.00' 0 a, S88 '56 '42 "E \ I \ \ \ 120.) ~--x-- . ····· ························ --··· ..... 30' A14 ::ws (11 ® A13 l SP4 (P) PLAT (M) MEASURED -X X-FENCE· · · · · · · · · · · · · · · · · · · · EDGE OF GRAVEL --t ASBUILT CENTERLINE -~•~-_,,~ EDGE OF PAVEMENT --"~llv~--"11/v~ WETLAND WETLAND BUFFER CONCRETE WALK ~..._-....~..___. PROPOSED BOUNDARY CURB AND GUTTER SURVEYORS NOTES: 1. THIS SURVEY DOES NOT PURPORT TO SHOW EASEMENTS OF RECORD OR THE LOCATION OF UTILITIES -EXCEPT AS SHOWN. 2. THE METHOD OF MONUMENT LOCATION WAS FIELD TRAVERSE, THE INSTRUMENTS USED WERE: GEODIMETER PRO, ROBOTIC TOTAL STATION. 3. THIS SURVEY MEETS OR EXCEEDS THE MINIMUM STANDARDS SET FORTH IN WAC332-130. 4. BASIS OF BEARING: MONUMENT LINE SE 192ND ST, AS PER PLAT OF NORTHr/EST GARDEN. 5. VERTICLE DATUM: NGVD29 6. CONTOUR INTERVAL: 2' 7. WETLAND DELINEATION BY HGS CONSULTING DECEMBER 2004, 8. OFFSITE BUILDING LOCATIONS PROVIDED BY CLIENT. 9. ONLY ABOVE GROUND UTILITIES WERE LOCATED THIS SURVEY.THE EXACT LOCATION OF ALL UTILITIES SHOULD BE VERIFIED BEFORE ANY DESIGN OR CONSTRUCTION. 10. ACTUAL FIELD SURVEY BENCH = RM 289, A CHISELED "X" · ON TOP OF THE SOUTHWEST BOLT ON A FIRE HYDRANT AT THE NORTHEAST CORNER OF THE INTERSECTION OF 124TH AVENUE SE. AND SE 192ND STREET. ESTABLISHED BY CH2M HILL. INC. ELEVATION= 385.76' Ali "' A 1 (1i, 30' EASEMENT PER HORT PLAT.STRIP TO BE DEEDED 0 COUNTY F'OR RIGHT-OF'-WAY. ~ ! ~,JA9 I.JJ ~ ~ /;;AA - AG 7, ' I-7 REFLAGED WETLAND PER H&S CONSULTING IN 04/2004 ' I 2 A &; "' 7, 1SP3 A4"' '%, ~·3 -/.\ \ A?. ;p ........... ; ' A RM 289 ~ LEGALS ORDER NO.; 1082861 LOT 1 OF SHORT PLAT NUMBER 278113, RECORDED AUGUST 28. 1976 UNDER AUDITOR 5 FILE NUMBER 7808281028, BEING A PORTION OF TRACT 13, NORTHWESTEl,N GARDEN TH ACTS, DIVISION NO. 5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OTHER PROPERTY 90, IN KING COUNTY, WASHINGTON. SEE EXCEPTION ON PLAT SITE PLAN. TOGETHER WITH AN EASEMENT FOR ROADWAY AND UTILITIES PURPOSES OVER THE EAST 30 FEET OF LOT 2 OF SAID SHORT PLAT NUMBER 278113. AND TOGETHER WITH AN EASEMENT FOR ROADWAY AND UTILITY PURPOSES O"ER THE EAST 30 FEET OF THE SOUTH 300 FEET OF TRACT 12, NORTHWESTEl1N GARDEN TRACTS, DIVISION NO. 5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OF PLATS, PAGE 90, IN KING COUNTY, WASHINGTON. ORDER NO.; 1121061 THAT PORTION OF LOT 12. NORTHWESTERN GARDEN TRACTS DIVISION NO. 5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OF PLATS, PAGE 90, IN KING COUNTY. WASHINTON: EXCEPT THE FOLLOWING DESCRIBED PROPERTY: BEGINNING AT THE SOUTHWEST CORNER: THENCE NORTHERLY ALONG THE WESTERLY LINE 300 FT.: THENCE EASTERLY PARALLEL WITH THE SOUTH LINE OF SAID LOT 135 FT.; THENCE SOUTH PARALLEL WITH THE WEST LINE OF SAID LOT, 300 FT.; THENCE WESTERLY ALONG THE SOUTH LINE OF SAID STREET TO THE POINT OF BEGINNING. SEE EXCEPTION ON PLAT SITE PLAN. ORDER NO.: 1125307 LOT 2. KING COUNTY SHORT PLAT NUMBER 338021, AS RECORDED KING COUNTY RECORDING NUMBER 8902210370; UNDER BEING A PORTION OF TRACT 11, NORTHWESTERN GARDEN TRACTS DIVIDSION ND. 5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OF PLATS. PAGE 90. IN KING COUNTY, WASHINGTON. LEGALS PROVIDED BY, CHICAGO TITLE INSURANCE COMPANY, El=374,69 X GS El=373.71X GS El=374.01 X GS THIS DRAWING rs THE PROPERTY OF EVERGREEN PRECISION SURVEYING AND SHALL NOT BE USED FOR ANY PURPOSE WITHOUT THE WRITTEN CONSENT OF AN AUTHORIZED AGENT OF EVERGREEN PRECISION SURVEYING . EVERGREEN PRECISION SURVEYING, ACCEPTS NO RESPONSIBLIITY FOR THE USE OF THIS DRAWING FOR ANY PURPOSE AFTER SIX MONTHS FROM THE DATE OF THE SURVEYORS SEAL. COPYRIGHT 2004, EVERGREEN PRECISION SURVEYING D f t '° D 'T 0 0 0.J Pa i:,:i !>a !>a ::, ,:q ~ [/] Q 8j tn Es !> ~ i:,:i ~ "- "' -,;< Es ? <'-.... A >D :,... Pa < Q z ::, 0 ,:q Q "' if] 0 p.. 0 Pa p.. -,;< 0 ....... >D 0 .. LD "'" ~ II <I; U- U} -rl ~ 0 (.!) z H >-w > a: ::, "' z a H "' H u w a: [l. z w w a: (.!) a: w > w • .... 0 0 cu I-:x: (.!) H a: >-a.. 0 u .. -----~----------------------------------------------------------------·-----------------------------------------------------------. .----------, ~o • GRAPHIC SCALE 0 50 ...._ _______ CASE MONUMENT BRASSIE W /PUNCH VISITED 1-26-04 ;--...--,. ; ; ~ 0 U1 Cl'.) 01 w ' (0 0 01 ~ • ~ z· • /~. Iv~---·. ........ 533. 41 ' (M) ' \ ..... ··-.. -...... ··--·-················----··· CASE MONUMENT ------BRASS IE W /X VISITED 1-08-04 ® 100 1"=50' 150 . ,{ s, \ '-~:J:, ,-- ,,, . ' _, .. ; . -·,.>-•" ·, OJ " ,,. ..... ·' J ·········· ...... . . I{) 01 ~ a, " l'1 0 ~ CD 0 • ~ z -~ A.,'o \> SHED T.B.R. 0° / I 11 ( / {;cc:, ,g, '> -x---fx~ SHED~ T.B.R. ~ ! 0 . ,-··· ... X· .. ~· ,-f--Or,-1--'--'--'......i'--...__,__..._"1 SOOS CREEK PLAT 33, TWP. 23 N, RGE TOT'AL AREA 7. 71 ACRES TOTAL PROPOSED SITE AREA= 6.98 ACRES 442----- \ \ \ \ I I lD 0 " ( 0 0 'It I \ oJ m "' "' m 01 ( I I I ff] '0 lD CTJ co \ "' CD 01 52.00' 5 E. WM i / I iii ! l'J I \ ~\ \ I ('1 ) 0l CD en ro 0 CD "' \ 1 \ \ I \ \ I \ \\ 15 ... 30' oJ r-,n \ I A 1 t1, , .l [3 . " <.q "' " ~· w ' <D -01 0 0 -z Al~ .... '%,: Ir. ~ I 5P4 A11 ~ (S) ,SC \ I "' '<· "' ,-\"1~ "' \ "' "' \ '$' \ S88 '56 '42 "E 120 .OD' il .CD 30' EASEME1'iT PER BENCH -~ SHORT PLAT,STRIP TO BE DEEDED TO COUNTY FOR RIGHT-OF-WAY ~ ! t A3 ~ ii5 1· 01 . i . 7 ' AB LEGEND ;;;, CATCH BASIN Cl, POWER POLE W/ UNDERGROUND 'o_ POWER POLE ® PHONE RISER 1EJ WATER METER '0 FIRE HYDRANT ¥ GUY WIRE @ GAS METER £/,. WELL LOCATION * WATER VALVE @) SEWER MANHOLE @J GAS VALVE I!] EXISTING SEPTIC TANK 0 CALCULATED (P) PLAT (M) MEASURED CORNER --x--x-FENCE EDGE OF GRAVEL --l--ASBUILT CENTERLINE EDGE OF PAVEMENT WETLAND WETLAND BUFFER CONCRETE WALK ~-'-...1.~.,___, PROPOSED BOUNDARY SURVEYORS NQTES: 1. THIS SURVEY DOES NOT PURPORT TO SHOW EASEMENTS OF RECORD OR THE LOCATION OF UTILITIES -EXCEPT AS SHOWN. 2. THE METHOD OF MONUMENT LOCATION WAS FIELD TRAVERSE. THE INSTRUMENTS USED WERE: GEODIMETER PRO, ROBOTIC TOTAL STATION. 3. THIS SURVEY MEETS OR EXCEEDS THE MINIMUM STANDARDS SET FORTH IN WAC332-130. 4. BASIS OF BEARING: MONUMENT LINE SE 192ND ST. AS PER PLAT OF NORTH\;EST GARDEN. 5. VERTICLE DATUM: NGV029 6. CONTOUR INTERVAL: 2' 7. WETLAND DELINEATION BY H@S CONSULTING DECEMBER 2004. 8. OFFSITE BUILDING LOCATIONS PROVIDED BY CLIENT. 9. ONLY ABOVE GROUND UTILITIES WERE LOCATED THIS SURVEY.THE EXACT LOCATION OF ALL UTILITIES SHOULD BE VERIFIED BEFORE ANY DESIGN OR CONSTRUCTION. = RM 289, A CHISELED "X" ON TOP OF THE SOUTHWEST BOLT ON A FI11E HYDRANT AT THE NORTHEAST CORNER OF THE INTERSECTION OF 124TH AVENUE SE. AND SE 192ND STREET. ESTABLISHED BY CH2M HILL, INC. ELEVATION= 385. 76' LEGALS ORDER NO.; 1082861 LOT 1 OF SHORT PLAT NIJMSl'cR 271311'3, RECORDED AUGUS'; 28, 1976 UNO:R AUDITOR S FILE NUMBER 7808281028, BEING A PORTION OF TRACT 13, NORTHWESTERN GARDEN TRACTS, DIVISION NO. 5, ACCORDING TO THE PLAT THEREOF, '1ECORDED IN VOLUME 47 OTHER PROPERTY 90, IN KING COUNTY, WASHINGTON. TOGETHER WITH AN EASEMENT FOR ROADWAY AND UTILITIES PURPOSES OVER THE EAST 30 FEET OF LOT 2 OF SAID SHORT PLAT NUMBER 278113. AND TOGETHER WITH AN EASEMENT FOR ROADWAY AND UTILITY PURPOSES OVER THE EAST 30 FEET OF THE SOUTH 300 FEET OF TRACT 12. NORTHWESTERN G.~RDEN TRACTS, DIVISION NO. 5, ACCORDING TO THE PLAT THEREOF, 11ECORDED IN VOLUME 47 OF PLATS. PAGE 90. IN KING COUNTY, WASHINGTON. ORDER NO.; 1121061 THAT PORTION OF LOT 12, NORTHWESTERN GARDEN TRACTS DIVISION NO. 5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OF PLATS, PAGE 90, IN KING COUNTY, WASHINTON; EXCEPT THE FOLLOWING DESCRIBED PROPERTY: BEGINNING AT THE SOUTHWEST CORNER: THENCE NORTHERLY ALONG THE WESTERLY LINE 300 FT.; X / N89'40'50"E 30.21'-+/--.... -.. -~. 1: THENCE EASTERLY PARALLEL WITH THE SOUTH LINE OF SAID LOT 135 FT.; THENCE SOUTH PARALLEL WITH THE WEST LINE OF SAID LOT, 300 FT.; THENCE WESTERLY ALONG THE SOUTH LINE OF SAID STREET TO THE POINT OF BEGINNING. .... ,····· I i I . 0 ci I "··· · .. ' " "' ~ )'1 '° 0 • ~· z I I I . 0 q g µJ {O l{1 ~ ~ z • I g i . ' (D . '° ;:: ·- ,, . •/. t:· ".--.,, ,_- ' . .-,, N79 '31 '15"E 50.77' .... I \/ E'LECTRIC VAULT 1 O' BUFF (fJ ';;-. !SP] A4:K,; ~ '-" .~.3 % s .. ~1 \ o'J --, . ~<' ~ " 2 ORDER ND.: 1125'.]07 LOT 2, KING COUNTY SHORT PLAT NUMBER 338021, AS RECORDED KING COUNTY RECORDING NUMBER 8902210370; UNDER BEING A PORTION OF TRACT 11, NORTHWESTERN GARDEN TRACTS OIVIDSION ND. 5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OF PL.~TS, PAGE 90, IN KING COUNTY, WASHINGTON. LEGALS PROVIDED BY, CHICAGO TITLE INSURANCE COMPANY. i'; 0 • ~ \ 1.·~ col~ /. ·.· I I I I I I ~ "... ..... \_RM 289\ . .. .......__9<0..._ / 89'40'54"E 130.82; / ~ / \ ~ c ..._ ~R~-+'~'"'"~~---1---+_.,.,,.C:;1>-t..-t __ -f-{--+,,,-f---,?,,----('_: _ _,-f,~f-'4'7r--f--t,,,-j~-tr-Y-"tr'-):;;--t;,:i-\'7',-1"-,,_1 --;l""\_l,;",,,(!__-?~.,,.,-f1:_.1"'=-\-~.,..::.'T-:_+rr--2'\-__:,?,-:-4;,.,.--=:~_,.,~"':-oJ-'-;;.'i0l-~--~i~-- 0 <eJ;ic1j"33fi'7'EGri,11,.4i.:;7,,~,~~~~~.-"E .. 1=3:,,;i,"l.4>-.-tG,,,9~~·~.~"~--tE::-:11;,'""'J;-71-:J;-,-. -.~,~t6~_~;----,·"'''-t:E±l"'c!J.,.;,>'l-~-:-.~o:11z:z~ \ <! 0J 'g Sf S?r (D ' '?'(),-~. __ 0> (SJ \~ -(i:_ '--. ID o OJ ID '!J o ~~~.--0-l!:"'·--«--=--~---,ll: -m~-+--+--N' _.., v 'le ; '"- --ff)(t ----"--fb'-~ ,elP,__-,,,,,--',COJ...--4-Cl ~-""ll)--ria,-+-,,, :; -~ ~ ff-rr; ~1 d{ 6? ~ / f_ L 0 'Iii ID ·lSt-} "" 0l "' 0l C, (O "' "' If .., fV t" ~-_,s_ ___ . (\) ( (J -<\J· f0 "' 'It " ,-, "T .., <JO .., .., tj p S89 '40' 54" \; 1322. 30' (P) ,,,, ... .,,.•'. CASE MONUMENT BRASS W/ "X" ~-VISITED 1--08-04 K.C. D.D.E.S . THIS DRAWING IS THE PROPERTY OF EVERGREEN PRECISION SURVE·Y-ING-··-- AND SHALL NOT BE USED FOR ANY PURPOSE WITHOUT THE WRITTEN CONSENT OF AN AUTHORIZED AGENT OF EVERGREEN PRECISION SURVEYING. CASE MONUMENT '-----BRASS IE W /X VISITED 1-08-04 EVERGRcEN PRECISION SURVEYING, ACCEPTS NO RESPONSIBLIITY FOR THE USE OF THIS DRAWING FOR ANY PURPOSE AFTER SIX MONTHS FROM THE DAfE OF THE SURVEYORS SEAL. COPYRilHT 2004, EVERGREEN PRECISION SURVEYING z 0 -[/J -:,. l"1 11' l"1 ~ Q '1' 0 0 0J 0 W ITT ~ II U, UJ -s-i w (\J IX\ iS ::;::; 0 :::i z (D z H >-LU > a: ::, (I) z 0 H (I) H u w a: a. z w w a: "' a: w > w " 0 0 ru >-:r: (!) H cc >-a. 0 u ' !, ,. \ PROPERTY DATA PROPERTY ADDRESS: 19100-124TH Ave SE LEGAL DESCRIPTIONS: See Survey •• Sheet 2 TAX 10#: 619900-0260 -0240, & -0220 SIZE: 6.9 Acres with one existing home on -0240 ZONING: R6 6 du I Acre WETLANDS: None on site, adjacent welland buffer impact STEEP SLOPES: Areas at 38-42% with 10 to 20 foot Rise AVERAGE SLOPE= 100' I 612' ~ 16.2o/o FLOOD ZONE: None PREVIOUSLY LOGGED: No Marketable Timber DRAINAGE COMPAINTS: County drainage from 192 street onto adjacent private property-400 feet from subject site DRAINAGE BASIN: Soos Creek WATER PROVIDER: Soos Creek Utility District SEWER PROVIDER: Soos Creek Utility District SCHOOL DISTRICT: Kent FIRE DISTRICT: King County TRAFFIC CONCURANCY ZONE: 799 (Approved) OWNERS: Parcel ·0260 B & J IP LLC 13425 E Lake Kathleen Drive SE Renton, Washington 98059 Parcel -0240 James Thompson 12208 SE 192"" Parcel -0220 12216 SE 192°0 Renton, INashington Janie Ritz Renton, Washington PROPOSED SUBDrvlSION DATA PLAT NAME: Soos Creek DESCRIPTION: 6.9 Acres to 35 Lots LOT SIZE: Width = 44 to 75 feet (5.1 du/ acre) Length = 82 to 120 feet Area= 4,750 to 6300 sq feel PUBLIC ROADS: 550' of 24' Subaccess Street at 2°/, siope (sar,ing 36 du) 300' of 24' Subaccess Street at 14o/, slope (serving 20 du) 420' of 22' Minor Access Street 14'/, slope (serving 14 du) PRIVATE: ROADS: Four 150' Private Access Tracts (serving 6 du each) SHAREDDRIVEWAY: Four 20feetwide INDIVIDUAL DRIVEWAYS: thirty five 16' wide SITE DISTANCE ISSUES; None, distances exceed 800feet SENSITIVE AREA ISSUES: 100' Wetland Buffer encroaches 40% Slope areas STORM WATER FLOW CONTROL REQUIRMENT: Level 1 STORM WATER QUALITY REQUIRMENT: Basic Zone DEVELOPER & APPLICANT: Contact Rick Boston Boston Design and Development LLC 13425 E Lake Kathleen Drive SE Renton, Washington 98059 Phone 425-226-2145 Fax 425-228-3653 ENGINEER: Jacques Consulting Neal Jacques PE 2633 SW 163 Place Burien, Washington 98166 Phone 206-242-5322 STORM WATER CONTACT PERSON: Rick Boston I I I I I f I I I flJ ,, \f ,,~ ' I " ( !2 " \ .,, \ \ ) aoo'SIGHT DISTANCE A PORTION OF 5·0:11 f I /2 \r I I SOOS CREEK PLAT SITE PLAl\f THE SW SEC,.fION 33, TWP. 23 /.,. f ,/ ,-~\ ;' \ . . . . N, RGE 4 J IL /) 0 Q J IL 5 E. WM i "=50' 150 KEY PRELIMINARY PLAT SITF; CONSIDERATIONS 1. THE PLAT IS FOR SINGLE FAMILY HOMES, THE MAJORITY BEING DAYLIGHT BASEMENT STYLE. LOTS ALL EXCEED KC STANDARDS FOR MINIMUM LOT SIZE. LOT AREAS ARE APPROXIMATELY 5000 TO 6000 FT' AND THE SMAUEST LOT WIDTH IS 44FT. ALL DRIVEWAYS WILL BE LESS THAN 12% GRADE. 2. ACCESS ROAD FROM SE.192No STREET,. SEE TRAFFIC STUDY ENTERING AND SITE DISTANCE PER 98 KC ROAD STANDARDS VOLUMES ARE BELOW LEFTTU:,N LANE THRESHOLil FOR 192ND 3. PROPOSED STREETS MEET sus,ACCESS, MINOR-ACCESS, AND PRIVATE-ACCESS TRACT STANDARDS FOR PAVEMENT WIDTH, CURBS, AND LE:NGTHS PER 98 KC ROAD STANDARDS EXCEPT THAT A. VARIANCE IS REQUIRED AS THE.LENGTH FROM.CENTERLINE OF SE 192 TO MIDPOINT OF FARTHEST CUL- OE-SAC. IT IS 1250 FEt:;T AND NO ADDITIONAL EMERGENCY ACCESS IS AVAILABLE. GRADE FOR PROPOSED St.191 CT IS 14o/,, SEE STREET VARIANCE JUSTIFICATION REPORT. 4. A MIDPOINTCUL·DE'SAC 1SlOCAffil ON THE PROPOSED END OF 124TH DUE TO THl:550 FT DISTANCE IN FROM 192ND,AND TO THE FACT THAT A FUTURE EXTENSION OF 124TH IS LIKELY SINCE IT PROVIDES THEONLY ACCESS T07 ACRES OF VACANT LAND TO THE NORTH. 5. THE EXISTING 124m·AVE SEIS TO BE WIDENED, lENGTHENED"AND PAVED. THIS LIES~PARTIALLY WITHIN 100 FOOT WETLAND BUFFER BUT IS THE ONLY REASONABlEENTRANCE, SEEcSTREET VARIANCE JUSTIFICATION REPORT. 6. SIDEWALKS ARE PROPOSED FOR ONE SIDE OF SUB AND MINOR ACCESS STREETS. ALONG 124 AVE INSTEAD OF A 5' SIDEWALK, A 12' WIDE PATHWAY, 12' WIDE BIOSWALE STRIP AND 3' TREE PLANTING STRIP. BENEFITING THE KING COUNTY PARKS.DEPARTMENT IS PROPOSED. THIS 1$ IN THE BUFFER AREA RUNNING PARALLEL TO THE WETLAND BOUNDARY. 7. PRIVATE PARK SPACE OF 13,260 FT' IS REQUIRED PER 390 FT' FOR 34 NEW LOTS; 14,849 FT' IS PROVIDED PLUS 3,600 FT' OF STEEP SLOPE AREA IS SET ASIDE IN A SEPARATE TRACT. 8. DRAINAGE FACILITY SPACE OF 20,650fT21S SET ASIDE AS A TRACT, ALTHOUGH 60% rs RESERVED AS WETLAND BUFFER AREA. 9. TWO FIRE HYDRANTS ARE PROPOSED, AT PROPOSED SE 191 AND THE CROSSING PRIVATE STREETS, THUS YIELDING 90% OF THE HOMES WITHIN 200 FfiET AND NONI! MORE THAN 300 FF;ET. LEGALS ORDER NO.; 1062861 LOT 1 OF SHORT PLAT NUMBER 278113, RECORDED AUGUST 28, 1976 UNDER : AUDITOR S FILE NUMBER 7808281026. BEING A PORTION OF TRACT 13, · NORTHWESTERN GARDEN TRACTS, DIVISION NO. 5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OTHER PROPERTY 90, IN KING COUNTY, WASHINGTON. TOGETHER WITH AN EASEMENT FOR ROADWAY ANO UTILITIES PURPOSES OVER THE EAST 30 FEET OF LOT 2 OF SAID SHORT PLAT NUMBER 278113. AND TOGETHER WITH AN EASEMENT FOR ROADWAY AND UTILITY PURPOSES OVER THE EAST 30 FEET OF THE SOUTH 3'00 FEET OF TRACT 12, NORTHWESTERN GARDEN TRACTS, DIVISION NO. 5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OF PLATS, PAGE 90, IN KING COUNTY, WASHINGTON. ORDER NO.; 1121061 THAT PORTION OF LOT 12, NORTHWESTERN GARDEN TRACTS DIVISION NO. 5, ACCORDING TO THE PLAT THEREOF, RECORDl:D IN VOLUME 47 OF PLATS, PAGE 90, IN KING COUNTY, WASHINTON; EXCEPT THE FOLLOWING DESCR CBED PROPERTY: BEGINNING AT THE SOUTHWEST CORNER: THENCE NORTHERLY ALONG THE WESTERLY LINE 300 FT.; THENCE EASTERLY PARALLEL WITH THE SOUTH LINE OF SAID LOT 135 FT.; THENCE SOUTH PARALLEL WITH THE WEST LINE OF SAID LOT, 300 FT.; THENCE WESTERLY ALONG THE :SOUTH LINE OF SAID STREET TO THE POINT OF BEGINNING. "' .,, l "' z -0:: '"! Q,: ~ ~ Pei 0 ORDER NO.; 1125307 LOT 2, KING COUNTY SHORT PLAT NUMBER 338021, AS Rl:CORDED UNDER KING COUNTY RECORDING NUMBl:R 8802210370; ~ [E; [E4~ !4[E ~ BEING A PORTION OF TRACT il., NORTHWESTERN GARDEN TRACTS OIVIDSION NO. 5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME A7 OF PLATS, PAGE 90, IN l(ING COUNTY, WASHINGTON. K.C. D.D.E.S . z 0 ~ E--< (/} 0 ill 0 ill Q,: ~ .. i<i [£ 0 ~ ~ ~ t.) (/} "' "' ;,:: 0 t.) 0 Ul II - -rl (/} "' ;:, 0/ t.) ~ z G:i "' z ~ Q,: "' ~ r3 z "' z 0 ~ (/} 1£ ~ "'' ~ 0 0 z ..-4 E-i .....:l p GO. z 0 u rn ~ p O' u < ~ % ~, . ....;, (0 (0 ,-j ro (j) <r: :s= C\l f:il -(\] P-. z C') r:.::l LO Cl} ,__. I ~ C\l f:il :::, 'Sf' :=i (:Cl C\l G' _,,__ u r:.::l (0 <t: O 0 >-:> <r: C\l ;...:) ..___, ,...::i P.. f;il <G C') z f:il (0 0 z-::r: :s= Cf) C') C') (.i) C\l P.. C".) L{) (0 Ct) I ro C\l C\l PROPERTY DATA PROPERTY ADDRESS: 19100-124TH Ave SE LEGAL DESCRIPTIONS: See Survey -· Sheet 2 TAX ID#: 619900-0260 -0240, & -0220 SIZE: 6.9 Acres with one existing home on -0240 ZONING: R6 6 du I Acre \l'IETLANDS: Nona on site, adjacent wetland buffer impact STEEP SLOPES: Areas a! 38-42"/o with 10 !o 20 foot Rise AVERAGE SLOPF = 100' /612'; 16.2% FLOOD ZONE: None PREVIOUSLY LOGGED: No Marketable Timber DRAINAGE COMPAINTS: County drainage fro1n 192 street onto adjacent private property-400 feet from subject site DRAINAGE BASIN: Soos Creek WATER PROVIDER: Soos Creek Utility District SEWER PROVIDER: Soos Creek Utility District SCHOOL DISTRICT: Kent FIRE DISTRICT: King County TRAFFIC CONCURANCY ZONE: 799 (Approved) OWNERS: Parcel •0260 B & J IP LLC 13425 E Lake Kathleen Drive SE Renton, Washington 98059 Parcel -0240 James Thompson 12208 SE 1 g,2nct Parcel -0220 12.216 SE 192nd Renton, Washington Janie Ritz Renton, Washington PROPOSED SUBDIVISION DATA PLAT NAME: Soos Creek -· (5.1 du/ acre) DESCRIPTION: 9.9 Acres to 35 Lots LOT SIZE: Width = 44 to 75 feet Length = 82 to 120 feet Area= 4,750 to 6300 sq feet PUBLIC ROADS: 550' of 24' Subaccess Street at 2°/o slope (serving 36 du) 300' of 24' Subaccess Street a! 14°/, slope (serving 20 du) 420' of 22' Minor Access Street 14o/, slope (serving 14 du) PRIVATE: ROADS: Four 150' Private Access Tracts {serving 6 du each) SHARED DRIVEWAY: Four 20feetwide INDIVIDUAL DRIVE\NAYS: thirty five 16' wide SITE DISTANCE ISSUES: None, distances exceed 800 feet SENSITIVE AREA ISSUES: 100' Wetland Buffer encroaches 40% Slope areas STORM WATER FLOW CONTROL REQUIR~AENT: Level 1 STORM WATER QUALITY REQUIRMENT: Basic Zone DEVELOPER & APPLICANT: Contact Rick Boston Boston Design and Development LLC 13425 E Lake Kathleen Drive SE Renton, Washington 98059 Phone 425-226-2145 Fax 425-228-3653 ENGINEER: Jacques Consulting Neal Jacques PE 2633 SW 163 Place Burien, Washington 98166 Phone 206-242-5322 STORM WATER CONTACT PERSON: Rick Boston i <o ~ .• " ( I I !2 " \ ·"' "' \ \ ) \ aoo'SIGHT DISTANCE \ . I ,/ ./ /' / /' ;' / n ]J,I ,. X /" ,(I' I ,/ X I I ~ /' I ' A PORTION OF . 0. .' . t '\? I I SOOS CREEK PLAT SITE PLAN THE SW SECTION 33, TWP. 23 ~-· -. N, RGE z 5 E. WM 1200~SITE DISTANCE Vicinity Map Scale 1" = 2400' 1"=50' 150 KEY PRELIMINARY PLAT SITE CONSIDERATIONS 1. TiiE PlA T IS FOR SINGLE FAMILY HOMES, THE MAJOR ITT BEING DAYLIGHT BASEMENT STYLE. LOTS ALL EXCEED KC STANDARDS FOR MINIMUM LOT SIZE. LOT AREAS ARE APPROXIMATELY 5000 TO 6000 Ff' AND THE SMAU£ST lOT WIDTH JS 44FT. ALL DRIVEWAYS WILL BE LESS THAN 12% GRADE. 2. ACCESS ROAD FROM SE 192"" STREET·· SEE TRAFFICSTUDY ENTERING AND SITE DISTANCE PER 98 KC ROAD STANDARDS VOLUMES ARE BELOW LEFT TURN LANE THRESHOLn FOR 192ND 3. PROPOSED STREE IS MEET SUB'A( SESS, MINOR-ACCESS, AND PRIVATE-ACCESS TRACT ST.A.NOP.RDS FOR PAVEMENT WIDTH, CURBS, AND i.ENGTHS PER 98 KC ROAD STANDARDS EXCEPT THAT A. VARIANCE IS REQUIRED AS THELENCTH FROM CENTERLINE DF SE 192 TO MIDPOINT OF FARTHl;ST CUL- OE-SAC. IT IS 1250 FEET ANO NO ADDITIONAL EMERGENCY ACCESS IS AVAILABLE, GRADE FOR PROPOSED se 191 CT IS 14%. SEE STREET VARIANCE JUSTIFICATION REPORT. 4. A MlDPOINTCUL-DEcSAC ISLOCATED ONTHEPROPOSED ENO OF 124TH DUE TO THE550 FT DISTANCE IN FROM 192ND, AND TO THE FACT THP,T A FUTURE EXTENSION OF 124TH IS LIKELY SINCE IT PROVIDES THE ONLY ACCESS TO TAC RES OF VACANT LANO TO THE NORTH. 5; THE EXISTING 124™AVESE1ST0 BE WIDENED; LENGTHENED-AND PAVED. TiilS'LIES.PARTIALLY WITHIN 100 FOOT WETLAND BUFFER UUT IS THE ONLY REASONABLE ENTRANCE, SEJ=.STREET VARIANCE JUSTIFICATION REPORT. 6. SIDEWALKS ARE PROPOSED FOR ONE SIDE OF SUB AND MINOR ACCESS STREETS. ALONG 124 AVE INSTEAD OF A 5' SIDEWALK, A 12' WIDE PATHWAY, 12' WIDE BIOSWALE STRIP AND 3' TREE PLANTING STRIP BENEFITING THE KING COUNTY PARKS.DEPARTMENT IS PROPOSED. THIS I$ IN THE BUFFER AREA RUNNING PARALLEL TO THE WETLAND BOUNDARY. 7. PRIVATE PARK SPACE OF 13,260 Fl' IS REQUIRED PER390 FT' FOR34 NEW LOTS; 14,849 Ff1 IS PROVIDED PLUS 3,600 FT 2 OF STEEP SLOPE AREA IS SET ASIDE IN A SEPARATE TRACT. 8. DRAINAGE FACILITY SPACE OF 20,650Ff21S SET ASIDE AS A TRACT, Al THOUGH 60°/, IS RESERVED AS WETLAND BUFFER AREA. 9. TWO FIR.E HYDRANTS ARE PROPOSED, AT PROPOSED SE 191 AND THE CROSSING PRIVATE STREETS, THUS YIELDING 90% OF THE HOM!aS WITHIN 200 FEs6T AND NON!s MORE THAN 300 FliET. . LEGALS ORDER NO.; 1082661 . LOT 1 OF SHORT PLAT NUMBER 278113, RECORDED AUGUST 28, 1976 UNDER . AUDITOR S FILE NUMBER 7806281028. BEING A PORTION OF TRACT 13, ., NORTHWESTERN GARDEN TRACTS, DIVISION NO. 5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME ·47 OTHER PROPERTY 90, IN KING COUNTY, WASHINGTON. TOGETHER WITH AN EASEMENT FOR ROADWAY AND UTILITIES PURPOSES OVER THE EAST 30 FEET OF LOT 2 OF SAID SHORT PLAT NUMBER 278113. AND TOGETHER WITH AN EASEMENT FOR ROADWAY ANO UTILITY PURPOSES OVER THE EAST 30 FEET OF THE SOUTH 300 FEET OF TRACT 12, NORTHWESTERN GARDEN TRACTS, DIVISION NO. 5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OF PLATS, PAGE 90, IN KING COUNTY, WASHINGTON. ORDER NO.; 1121061 THAT PORTION OF LOT 12, NORTHWESTERN GARDEN TRACTS DIVISION NO. 5, ACCORDING TO THE PLAT THEREOF. RECORDED IN VOLUME 47 OF PLATS, PAGE 90, IN KING COUNTY. WASHINTON; EXCEPT THE FOLLOWING DESCRIBED PROPERTY: BEGINNING AT THE SOUTHWEST CORNER: THENCE NORTHERLY ALONG THE WESTERLY LINE 300 FT.: THENCE EASTERLY PARALLEL WITH THE SOUTH LINE OF SAIO LOT 135 FT.; THENCE SOUTH PARALLEL WITH THE WEST LINE OF SAID LOT, 300 FT.: THENCE WESTERLY ALONG THE SOUTH LINE OF SAID STREET TO THE POINT OF BEGINNING. ORDER NQ_; 1125307 LOT 2, l(ING COUNTY SHORT PLAT NUMBER 338021, AS RECORDED UNDER KING COUNTY RECORDING NUMBER 8902210370; BEING A PORTION OF TRACT 11, NORTHWESTERN GARDEN TRACTS DIVIOSION NO. 5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OF PLATS, PAGE 80, IN l<ING COUNTY, WASHINGTON. • 0 pc: '1' LO r:.i 0 IIl 0 II ~ (\J ;:J ' z -sc-1 lD .. E--< •. (\J µ::j u µ::j ....:1 "'1 ~~ <r: ...., u 0 i::::l ""J (I) pc: f.l.. CD CD ,....; C.!, Cl) 0) z <Ii '"""4 ~ C\I ~ r::i::I C\I t--::i 0... z C') I :::i i:£l ID ' I m """" I Cf), r::i::I ~ C\I I :7-. ·~ tii ;t ,_; ·• ' . 0 G' .---. -u 0 i:£l CD <r; U 0 >-:, <r: C\2 Cf), ....:1 .__, ....:I Ila J:i1 ~ <r; C".l z :::i r::i::J CD 0 a z,....; ::C: Ila u ~ <Cl (I) ~ C".l C') (.() C\I .. K.C. D.D.E.S. I ((} ,, •. , I \ I I <l ~· . .,, \ • I "' ,._. •,- \ I I R .. I I I ,/ ( A PORTION OF CREEK PLAT SOOS SITE PLAN THE SW SECTION 33, TWP. 23 : . , . ,S . N, RGE 5 E. WM s=. LEGEND *_TREE (C,:inff,er) \~ mE'.E (Deciduous) {ffjJ, NEW STREET IBEES GRAPHIC SCALE 1"=50' 100 150 KEY PRELIMINARY PLAT DRAINAGE CONSIDERATIONS 1. THE SITE ANO DRAINAGE FACILITIES ARE SUBSTANTIALLY ABOVE THE 100 YEAR FLOOD PLAIN. THE ELEVATION 40 TO 50 FEET DOWN HILL FROM THE SITE IS AT ELEVATION 374, ANY WATER LEVELS HIGHER THAN THAT WILL BE FLOWING OVER THE SE 192•0 STREET SURFACE AND THEN INTO THE 300 FOOT WIDE SOOS CREEK BASIN. SEE THE LEVEL 1 TECHNICAL INFORMATION REPORT. 2. SOILS ON LOTS 1 -15 AND THE DRAINAGE FACILITY AREA HAVE WELL.DRAINED SOILS WHICH FACILITATE INFILTRATION FOR INDIVIDUAL ROOF AREAS AND FOR THE DETENTIONl'OND. FOR ALL OTHER LOTS, ROOFS DRAIN TO THE !NFILTRA TION POND. SEE THE GEOLOGY SOILS REPORT, SOILS ANALYSIS. 3. STREETS AND SIDEWALKS DRAIN TO THE INFILTRATION POND. POND IS SIZED TO HANDLE LEVEL 1 RETENTION DUE TO LOW SLOPE DISCHARGE. DETAIL ENGINEERING DESIGN MAY DICTATE SOME AMOUNT OF INFILTRATION TRENCHING WHICH CAN BE LOCATED ON LOT 34. 4. NO BIOSWALE JS EMPLOYED FROM THE INFILTRATION POND AS THE 2 YEAR STORM WILL BE TOTALLY INFILTRATED. THE 100 YEAR OVERFLOW WILL DISCHARGE DIRECTLY TO THE WETLAND BUFFER; THE SLOPE AT THE DISCHARGE POINT IN THE BUFFER IS 2 TO 3%. 5. THE PROPOSED PLAN FOR STORM DRAINAGE OFF THE WIDENED 124TH AVE IS TO DISCHARGE THRU SEGMENTED CURB INTO THE WETLAND BUFFER IN A DISPERSED MANNER AS IT NATURALLY AND CURRENTLY DOES. THIS CAN NOT BE PIPED TO THE INFILTRATION POND AS THIS STREET IS AT THE LOWEST LEVEL OF THE DEVELOPMENT AND IS SUBSTANTIALLY NOT ON THE SUBJECT PLAT PROPERTY. AN UNDER STREET PIPE VAULT WAS CONSIDERED BUT DUE TO ELEVATIONS, DISCHARGE WOULD THEN BE D!RECTL Y INTO WETLAND (WHICH DOES NOT INSURE WATER QUALITY}. CONSIDERING THAT 4 FT STREET WIDENING PLUS THE CUL-DE-SAC CREATES 7700 Ff2 OF NEW IMPERVIOUS, THE 2 YEAR STORM VOLUMES ARE NOT LARGE. THE CURRENT RECEIVING BUFFER IS BRUSHY VEGETATION. 6. PER THE KING COUNTY PARKS DEPARTMENT; ITIS PROPOSED TO BUILD A PATHWAY IN THIS BUFFER AREA AND TO CHANGE THE BRUSH VEGITATION TO A MORE EFFICIENT 12 FOOT WIDE GRASS BIOSWALE AND ENHANCE IT WITH NJ;W TREES. 6. A SITE Bl-PASS LINE IS PROPOSED TO TAKE SUB-SURFACE WATER FLOWING ONTO THE SITE FROM THE HIGH PLATEAU TO THE WEST AND THEN DISCHARGE AT THE LOW ELEVATION AT THE EAST PROPERTY LINE IN THE W/L BUFFER AREA; PIPING WOULD TIGHT LINE DOWN AROUND 25% SLOPES BY FOLLOWING THE ROAD ( 14°/, SLOPE). THIS WOULD ALSO BE USED FOR FOOTING DRAINS AND ANY SUBSURFACE FLOWS DETECTED IN THE FUTURE. SEE THE GEOLOGY SOILS REPORT, SLIDE ANALYSIS. . fE.13 4 2004 1<.C. o.0.1::..s. i t :z uc 0:, Pc: ~ z ~ Q s:;)" 0 0 C\J ~ [fl 0 0:, i>i ~ ~ -[fl i:1 ----- z 0 E-< lfJ 0 0:, Pc: ~ 0:, Q ~ u "' :,:: u ' 0 Ul II . . i:£1 ~ u [fl O'.) "' ::, Of 0 ;;; z ;;.; 0:, 0 z -0:: "' "' z -(.') z "' z 0 ~ O'.) > "' 0:: "' !;i Q 0 z -E--1 i--::1 ~ (12 z 0 u w. r;;;i:.:i ~ a u -< I-:, c.o c.o ,-; co CJ) <G Is: C\l r:,:::i • C\l 0-; z (Y) i:£1 ID UJ >-< I ~5~ :=, III C\l G' ,,,-.. u f:il c.o <r: u 0 >-::, <G C\l ...:i......., ,_:i I).; J:il <r: z i::c:1 (Y) 0 z s ;I.1 I).; Is: [fl C".) C".) c.o C\l Q_ I .. : I ,,,- ·'-'. • ' .. ··-~--. 25 5.l!J! 24 4,0lS 21 .:.]5!) ,-'·" ! I ],,.. 20 .,~, . r · -1,2;v .. · ', .. ''' ,,''. : . . I I ; ! .-'}. ---.,--.. . ' .. ::1· : , ,,;~ . _ .... -, ,, ., ·•· ... ,, .. _.,·19 C 5.f~/6 EXCEPTION TO'RLAT: ' :: •. ·, • THIS 240.0' BY 1130.8' PORTION OF . PARCEL NO. 6.~9900=0220 3tti\tt B~C LEFT OUT OF ~LAT LEGAL DESCRIPTION •'• ',· AS IT IMLL B81$EGREGATED VIA Pi . i · BOUNDARY LINEI ADJUSTMENT. _,_i_;c.__·•"-''· I __ ~ I . I 130.8' -,. _.,_ ~ I ::::. I . , .. , · , ,,··15 /· 7,/W {6 '-, . lZ,Sr2 . ,·.·--"'; D - . '. J.132 .:,; ·, ' .. -" . ·_ -_" <' )_' .. ,,, ' ',• . ' . ·'.' '", ''" :" 1!i . 7 -· -1,366, 111 I' i .; -·" L ... _.·· ,-'./--· _,· .,. ---..'-·'-· --' ---~ ._, ;;._ . _.,..;. '4-' -'--'';_,..-.'. ···-------"' ' .. ----,o ,,.,, ~,. ,.,_,_ ____ ,_, ........... ".,- ' ·,, " ... . -. ,J-'., --~---: . . ' · ,.,_jfC ._,._ ,., ,. .,,. "'" ··-·• • "· ·· • /----.. '., .... • ... -.. ,-. '·"""'''" "'C ,,.',( C N PROJECT PLAN SCALE: 1 "=1 oo· PROJECT DATA: -............ -.. n ,........, 1...-.., V. ' ,4,IQO .. ' ... ' ,. r~· :;~ 998 ' . ; ;' :i 991-mic. i .' tH'iJ. ... _._'!,'[17 • •\'- "-' . \'.' D, \ • .-i ; ' , . . ' . \ ,:;.:; ,"/ :z_ ·t .. \ ;t' <'.'.: ::;. ,,, __ ·r·, --\ ---. • • -,c'. .. ';/, \ ' • • \ ,,,_.,, .. ·,_ . ',,. -·/·: GRAPHIC SCALE ( IN FEET) 1 inch = 100 ft. ':, \ ' ' ', I \ \ ----· ,• --------------··----------------------------------------------------- LEGAL DESCRIPTION: ORDER NO.; 1082861 LOT 1 OF SHORT PLAT NUMBER 278113, RECORDED AUGUST 28, 1976 UNDER AUDITOR S FILE NUMBER 7808251028, BEING A PORTION OF TRACT 13, NORTHWESTERN GARDEN TRACTS. DIVISION N0.5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OTHER PROPERTY 90. IN KING COUNTY, WASHINGTON. SEE EXCEPTION ON PLAT SITE PLAN. TOGETHER WITH AN EASEMENT FOR ROADWAY AND UTILITIES PURPOSES OVER THE EAST 30 fEET OF LOT 2 OF SAID SHORT PLAT NUMBER 278113. AND TOGETHER WITH AN EASEMENT FOR ROADWAY AND UTILITY PURPOSES OVER THE EAST 30 FEET OF THE SOUTH 300 FEET Of TRACT 12, NORTHWESTERN GARDEN TRACTS. DIVISION N0.5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OF PLATS, PAGE 90, IN KING COUNTY, WASHINGTON. (PARCEL NO. 619900-0260) ORDER NO.: 1121061 THAT PORTION OF LOT 12, NORTHWESTERN GARDEN TRACTS DIVISION N0.5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OF PLATS, PAGE 90. IN KING COUNTY, WASHINTON: EXCEPT THE FOLLOWING DESCRIBED PROPERTY: BEGINNING AT THE SOUTHWEST CORNER: THENCE NORTHERLY ALONG rrlE WESTERLY LINE 300 FT.: THENCE EASTERLY PARALLEL WITH THE SOUTH LINE OF SAID LOT 135 FT.: THENCE SOUTH PARALLEL IMTH THE WEST LINE OF SAID LOT, 300 FT.: THENCE WESTERLY ALONG THE SOUTH LINE OF SAID STREET TO THE POINT OF BEGINNING. SEE EXCEPTION ON PLAT SITE PLAN. (PARCEL NO. 619900-0240) ORDER NO.; 1125307 LOT 2, KING COUNTY SHORT PLAT NUMBER 338021. AS RECOROED UNDER KING COUNTY RECORDING NUMBER 8902210370; BEING A PORTION OF TRACT 11. NOR]}JWESTERN GARDEN TRACTS DIVIDSJON N0.5. ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OF PLATS, PAGE 90. IN KING COUNTY, WASHINGTON. EXCEPT THAT PORTION NOTED AS "EXCEPTION" ON ·rnE PROJECT PLAN ABOVE. (PARCEL NO. 619900-0220) VER77CAL DATUM NGVD 29 VERTICAL CONTROL: BENCH =RM 289. A CHISEi.ED "X" ON TOP OF THE SOUTHWEST BOLT ON A FIRE HYDRANT AT THE NORTHEAST CORNER OF THE INTERSECTION OF 124rrl AVENUE SE. AND SE 192ND STREET. ESTABLISHED BY CH2M HILL. INC. ELEVATION; 385.76' IMPERVIOUS S'URFACES: EXISTING IMPERVIOUS SURFACE AREA = PROPOSED IMPERVIOUS SURF ACE AREA = NET INCREASE IMPERVIOUS SURFACE AREA = EARTHWORK QUANTITIES: CUT FILL 4,429 C.Y. 7,544 C. Y. l 3,341 S.F. 205,715 S.F. 192.374_ S.F. NOTE: l}JfSE QUANTITIES ARE FOR PERMIT REVIEW. CONTRACTOR SHALL BE RESPONSIBLE FOR INDEPENOENTL Y DETERMINING ALL QUANTITIES FOR BIDDING AND CONSTRUCTION. \ GENERAL NOTES: 1) ALL CONSTRUCTION SHALL BE IN ACCORDANCE IMTH THE KING COUNTY CODE (KCC), ROAD STANDARDS (KCRS), AND THE KING COUNTY COUNCIL'S CONDITIONS OF PRELIMINARY SUBDIVISION APPROVAL IT SHALL BE THE SOLE RESPONSIBILITY OF THE APPLICANT AND rrlE PROFESSIONAL CIVIL ENGINEER TO CORRECT ANY ERROR, OMISSION, OR VARIATION FROM THE ABOVE REQUIREMENTS FOUND IN THESE PLANS. ALL CORRECTIONS SHALL BE AT NO ADDITIONAL COST OR LIABILITY TO KING COUNTY . ,..."\ .......... n..-...................• .-,,-r,-.. ,u ............ ,,-..-....... '"" •••• -,..,,,-,..,, ........ ............... • ,..,,.. ............................... , ... L) IHt. Ut.::,J\:,N tLt.MtNI~ YVIIMIN JHt.~t. t'U\N;.) tll\Vt. tit.tN Kt.VltWt.lJ A\.,l,VKUIN\:1 IU IHt. KING COUNTY DEPARTMENT OF DEVELOPMENT AND ENVIRONMENTAL SERVICES (DOES) ENGINEERING RE'~EW CHECKLIST. SOME ELEMENTS MAY HAVE BEEN OVERLOOKED OR MISSED BY THE DOES PLAN REVIEWER. ANY VARIANCE FROM ADOPTED STANDARDS JS NOT ALLOWED UNLESS SPECJFICALL Y APPROVED BY KING COUNTY PRIOR TO CONSTRUCTION. 3) APPROVAL Of THIS ROAD, GRADING, AND DRAINAGE Pl.AN DOES NOT CONSllTUTE AN APPROVAL OF ANY OTHER CONSTRUCTION (E.G. DOMESTIC WATER CONVEYANCE, SEWER CONVEYANCE, GAS, ELECTRICAL, ETC.) 4) BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACnVITY, A PRECONSTRUCflON MEETING MUST BE HELD BETWEEN l}JE DOES LAND USE INSPECTION SECTION, THE APPLICANT, AND THE APPLICANTS CONSTRUCTION REPRESENTATIVE. 5) A COPY OF THESE APPROVED PLANS MUST BE ON THE JOB SITE WHENEVER CONSTRUCTION IS IN PROGRESS. 6) CONSTRUCTION NOISE SHALL BE LIMITED AS PER KING COUNTY CODE (SECTION 12.88); NORMALLY, THIS IS 7 A.M. TO 10 P.M. WEEKDAYS AND 9 A.M. TO 10 P.M. ON WEEKENDS. 7) IT SHALL BE THE APPLICANT'S/CONTRACTOR'S RESPONSIBILITY TO OBTAIN ALL CONSTRUCTION EASEMENTS NECESSARY BEFORE INITIATING OFF-SITE WORK WITHIN THE ROAD RIGHTS-OF-WAY. 8) FRANCHISED UTILITIES OR OTHER INSTAJl.ATIONS l}JAT ARE NOT SHOWN ON l}JESE APPROVED PLANS SHALL NOT BE CONSTRUCTED UNLESS AN APPROVED SET OF PLANS THAT MEET AU_ REQUIREMENTS OF KCRS CHAPTER 8 ARE SUBMITIED TO THE ODES LAND USE INSPECTION SECTION THREE DAYS PRIOR TO CONSTRUCTION. 9) DA TUM SHALL BE NAVD 1988 UNLESS OTHERWISE APPROVED BY DDES. 10) GROUNDWATER SYSTEM CONSTRUCTION SHALL SE WITHIN A RIGHT-OF-WAY OR APPROPRIATE DRAINAGE EASEMENT, BUT NOT UNDERNEATH THE ROADWAY SECTION. ALL GROUNDWATER SYSTEMS MUST BE CONSTRUCTED IN ACCORDANCE WITH SECTION 81 3.02 OF THE APWA STANDARD SPECIFICATIONS. 11) ALL UTILITY TRENCHES SHALL BE BACKFILLED ANO COMPACTED TO 95 PERCENT DENSITY • 12) ALL ROADWAY SUBGRADE SHALL BE BACKflLLED AND COMPACTED TO 95 PERCENT DENSITY (WSDOT 2-06.3). 13) OPEN CUTTING OF EXISTING ROADWAYS JS NOT ALLOWED UNLESS SPECIFlCALLY APPROVED BY DOES AND NOTED ON THESE APPROVED PLANS. ANY OPEN CUT SHALL BE RESTORED IN ACCORDANCE WITH KCRS 8.03 (8)3. 14) THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROVIDING ADEQUATE SAFEGUARDS, SAFETY DEVICES, PROTECTIVE EQUIPMENT, FLAGGERS, AND ANY OTHER NEEDED ACTIONS TO PROTECT THE LIFE, HEAL TH, AND SAFETY OF THE PUBLIC, AND TO PROTECT PROPERTY IN CONNECTION IMTH THE PERFORMANCE OF WOllK COVERED BY THE CONTRACTOR. ANY WORK WITHIN THE TRAVELED RIGHT-OF-WAY THAT MAY INTERRUPT NORMAL TRAFFlC FLOW SHALL REQUIRE AT LEAST ONE FLAGGER FOR EACH LANE OF TRAFFIC AFFECTED. SECTION 1-07.23; TRAFFIC CONTROL," OF THE WSDOT STANDARD SPECIFICATIONS SHALL APPLY IN ITS ENTIRETY. w SE 176 - VICINllY MAP SCALE: NTS CIVIL SHEET LIST: 1 COVER SHEET .. EXISTING TOPOGRAPHIC SURVEY (BY OTHERS) 2 PRELIMINARY LOT LAYOUT PROJECT LOCATION SE 192ND ST N 3 PRELIMINARY INTERNAL PLAT ROAD IMPROVEMENTS PLAN 4 PRELIMINARY GRADING AND DRAINAGE PLAN 5 PRELIMINARY DETENTION ANO TREA TI~ENT PLAN 6 PRELIMINARY WATER AND SANITARY SEWER MAIN EXTENSION PLAN 7 PRELIMINARY ROAD AND UTILITIES PROFILES-1 8 PRELIMINARY ROAD AND UTILITIES PROFlLES-2 LEGEND: ···-------------------------- l'-i'Ii,cr··:1; .. J I " '. ·.. ,, I ASPHALT PAVEMENT CONCRETE PAVEMENT FIRE HYDRANT THRUST BLOCK VALVE BEND FITTING WATER METER DITCH OR SWALE FLOW LINE AREA DRAIN II CATCH BASIN TYPE 1 0 CLEANOUT --RD ROOF DRAIN --FD---FOOT DRAIN STORM DRAJNAGE LINE (SD) K.C. o.o.E.S ABBREVIATIONS: AD AREA DRAIN APWA AMERICAN PUBLIC WORKS ASSOCIATION CB CATCH BASIN C.O. CLEAN OUT C.O.K. CITY OF KIRKLAND CSBC CRUSHED SURFACING BASE COURSE CSTC CRUSHED SURFACING TOP COURSE DEV DEVELOPMENT OISP. DISPERSION E EAST ESC EROSION AND SEDIMENT CONTROL EX EXISTING FD FOOTING DRAIN FDC FIRE DEPARTMENT CONNECTION FF FINISH FLOOR FH FIRE HYDRANT GV GA TE VALVE HYD HYDRANT IE INVERT ELEVATION K.C. KING COUNTY LF LINEAL FOOT LS LANDSCAPE DESIGN MAX. MAXIMUM MIN. MINIMUM MJ MECHANICAL JOINT N NORTH NTS NOT TO SCALE O.C. ON-CENTERS PLS PROFESSIONAL LAND SURVEYOR RD ROOF DRAIN R/W RIGHT-OF-WAY s sou·rn SD STORM DRAIN STD STANDARD STL STEEL TYP TYPICAL W WATER WSDOT WASHINGTON STATE DEPARTMENT OF TRANSPORTATION • "' CALL BEFORE YOU DIG 1-800-424-5555 FOR FIELD LOCATION OF UNDERGROUND UTILITIES ~ .. ·-i I" ·J·--: Taylor Engineering Consultants 205 Front St. S . P.O. Box 1787 Issaquah, WA 98027 tel. 425-391-1415 fox 4?5-391-1551 Project: SOOS CREEK PLAT Developer: C. Shaffer Corporation Mr. Charles Spaeth 6839 Ravenna Avenue NE Seattle, WA 98115 Job Data: T[C Joh #, Designed: 294-JMA WNT Drown' Checl:ed RP L.MT Authorized Use: This drawing is issued for use in the titled project only. It shall not be used for any other purpose without the express authorization and/or adaptation by TEC. Permit Agency: KING COUNTY Af>P !,),; Lo 4 f' op o 2, EXPIRES 6/10/05 Issued for: PRELIMINARY 9/15/04 Rev. Date Sheet Title: CML DATA AND GENERAL NOTES Sheet No: 1 Sheet of ,,. " .• ' a_ - ~ 0 tI1 0) "' ~- w . (D 0 "' ~ • z· GRAPHIC SCALE -----CASE MONUMENT BRASS IE. W /PU1VCH VISITJl'D 1-26-04 ® .... 0, .. ---'~----\''·· ........ V 533.41'(M) \ ',._ ·--.,. ____ _ ----·----"•• ---·-·-··' ·-----.. " ... 1 "=50' •... I I.O I " " rv R " <( ,,. .,.,,,, ~ \ . ---' ....... ~ 'o, -- CASE MONUMENT .__ __ BRASSIE W /X VISITED 1--08-04 CASE MONUMENT '---BRASS IE W /X VISITED 1--08--04 ' SOOS CREEK PLAT .r{f)-' 9\:/ Q} " " I ············ ...... ~--····· 01 05 04 WETLAND "B" ;,} 998 SQ FEET " NON REGULATED ~ SECTION 33, TWP. 23 TOT'AL AREA 7. 71 ACRES TOTAL PROPOSED SITE AREA= 6.99 /, t({~{{~~~~ I lO ~ ~ ~ I ~ / / \ \ \ \ , PER LAND OWNER %APPROXIMATE DRIANFIELD ) I . I / T.B.R I ; ~0 I ~ (D 0 " ( Q 0 " I 0) a, 01 (D 0) OJ N, RGE ACRES ( ID OJ I 01 <I (D 01 0 CJ) "' ' co CJ) 01 \ '-·--i.-. ) . " "'1"' co V , •• ' . ';;;· .. {;-: I !.[) .,,. (D jj "1" \: ! lO a, 01 lO co 01 '! R /~ I ·-·Q) (t (D ([) -V "' I p . tI1 01 "' a, " v,I 'i:: (I) p "' z (I C, . I : 0 ' .: q •: 0 " (\) i,J ~l ~ I I ] "T 'v-7 ,('l '\ i 0 '4 ,, <f (JJ qq4 ~ f:? SliED~,fJ 1'.B.R. ~ (1" \ \ "\ > cotDqC\J 0000 V t\ ~ ~ IJ· J co cf? '6': I {?vi-'. ~ I I \ I ~ 442~---~ ·,J\ l ~%~cO\.O<SNo ;10 ru & !/;! I V' (D ....,. j 0 g, ~d, .. .,. I l,,.,........,.J.,, . 0 a 0 0 01 pJ (8 I.O p '" z : I ' ' 1\1 ' t,\79 ·31r1~ \ I I ~ ! <2, ; & 0 w > ... H-- OZ UlW w::,: a: f-- lJ) w::, ro-:i <( _j w ..Jl.Ll z <CZH :r: 1---1 _J "'...J w f-->-u za:z W<tw ,e D l!. IZ u :::Jen <COH OffiJ: a: f-- U <C ZHO W>f-- ~ D z . (D OJ " " ~ • 1··' ~ . ' . : :' ; ~ h: ~ . . ~ I : i w ' (I) ~ ~, 0 • ~ z 6'42"E 52.00' . 0 q °'«i o:JOJ w01 --+---~ ~ 0\ 5 E. 0 (I) 01 <J) 01 SBB '56 '42"E \ I \ \ I \1 120.0~ I ¥ WM A18 30' A15 A13 ® l SP4 A11 ·,-.. "' / A1~ 30' EASEMENT PER HORT PLAT.STRIP TO BE DEEDED 0 COUNTY FOR RIGHT-OF-WAY. ~ ! ~,J A9 ([) ~ -:;:; {'\.., , \ \ rr;AP. . ~ ! ' AB ' ·100' UFF 1SP3 LEGEND ~ CATCH BASIN ~ POWER POLE W/ UNDERGROUND '-'\ POWER POLE ® PHONE RISER [El WATER METER tiJ FIRE HYDRANT ¥ GUY WIRE @ GAS METER /;I:,, WELL LOCATION * WATER VALVE ® SEWER MANHOLE @l GAS VALVE ~ EXISTING SEPTIC TANK 0 CALCULATED CORNER ~ CULVERT :U: SIGNALBOX (P) PLAT (M) MEASURED -X X-FENCE · · · · -· -.. · .. -· · · · · · EDGE OF GRAVEL -~it-~ ASBUILT CENTERLINE EDGE OF PAVEMENT ~~!lv~~~llv-WETLAND ·· · ·· WETLAND BUFFER CONCRETE WALK ~-'---'-~'---' PROPOSED BOUNDARY -------------CURB AND GUTTER SURVEYORS NOTES: 1. THIS SURVEY DOES NOT PURPORT TO SHOW EASEMENTS OF RECORD OR THE LOCATION OF UTILITIES -EXCEPT AS SHOWN. 2. THE METHOD OF MONUMENT LOCATION ,/AS FIELD TRAVERSE. THE INSTRUMENTS USED WERE: GEODIMETER PRO, ROBOTIC TOTAL STATION. 3. THIS SURVEY MEETS OR EXCEEDS THE MINIMUM STANDARDS SET FORTH IN WAC332-130. 4. BASIS OF BEARING: MONUMENT LINE SE 192ND ST. AS PER PLAT OF NORTHWEST GARDEN. 5. VERTICLE DATUM: NGVD29 6. CONTOUR INTERVAL: 2' 7. WETLAND DELINEATION BY H~S CONSULTING DECEMBER 2004 . 8. OFFSITE BUILDING LOCATIONS PROVIDED BY CLIENT. 9. ONLY ABOVE GROUND UTILITIES WERE LOCATED THIS SURVEY.THE EXACT LOCATION OF ALL UTILITIES SHOULD BE VERIFIED BEFORE ANY DESIGN OR CONSTRUCTION. 10. ACTUAL FIELD SURVEY BENCH = RM 289, A CHISELED "X" ON TOP OF THE SOUTHWEST BOLT ON A FIRE HYDRANT AT THE NORTHEAST CORNER OF THE INTERSECTION OF 124TH AVENUE SE. AND SE 192ND STREET. ESTABLISHED BY CH2M HILL, INC. ELEVATION= 385. 76' LEGALS ORDER NO.; 1082861 LOT 1 OF SHORT PLAT NUMBER 278113, RECORDED AUGUST 28. 1976 UNDER AUDITORS FILE NUMBER 7808281028. BEING A PORTION OF TRACT 13, NORTHWESTERN GARDEN TRACTS, DIVISION NO. 5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OTHER PROPERTY 90, IN KING COUNTY, WASHINGTON. SEE EXCEPTION ON PLAT SITE PLAN. TOGETHER WITH AN EASEMENT FOR ROADWAY AND UTILITIES PURPOSES OVER THE EAST 30 FEET OF LOT 2 OF SAID SHORT PLAT NUMBER 276113. AND TOGETHER WITH AN EASEMENT FOR ROADWAY AND UTILITY PURPOSES OVER THE EAST 30 FEET OF THE SOUTH 300 FEET OF TRACT 12, NORTHWESTERN GARDEN TRACTS, DIVISION NO. 5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OF PLATS, PAGE 90, IN KING COUNTY, WASHINGTON. ORDER NO.; 1121061 THAT PORTION OF LOT 12, NORTHWESTERN GARDEN TRACTS DIVISION NO. 5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OF PLATS, PAGE 90, IN KING COUNTY, WASHINTON; EXCEPT THE FOLLOWING DESCRIBED PROPERTY: BEGINNING AT THE SOUTHWEST CORNER: THENCE NORTHERLY ALONG THE WESTERLY LINE 300 FT.; THENCE EASTERLY PARALLEL WITH THE SOUTH LINE OF SAID LOT 135 FT.; THENCE SOUTH PARALLEL WITH THE WEST LINE OF SAID LOT, 300 FT.: THENCE WESTERLY ALONG THE SOUTH LINE OF SAID STREET TO THE POINT OF BEGINNING. SEE EXCEPTION ON PLAT SITE PLAN. ORDER NO.: 1125307 UNDER LOT 2, KING COUNTY SHORT PLAT NUMBER 338021, AS RECORDED KING COUNTY RECORDING NUMBER 8902210370; BEING A PORTION OF TRACT 11, NORTHWESTERN GARDEN TRACTS DIVIDSION NO. 5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OF PLATS, PAGE 90, IN KING COUNTY, WASHINGTON. LEGALS PROVIDED BY, CHICAGO TITLE INSURANCE COMPANY. El=374.69 X El=373.71 X GS • EVERGREEN PRECISION SURVEYING, ACCEPTS NO RESPONSIBLIITY FOR THE USE OF THIS DRAWING FOR ANY PURPOSE AFTER SIX MONTHS FROM THE DATE OF THE SURVEYORS SEAL. COPYRIGHT 2004, EVERGREEN PRECISION SURVEYING •' ~ 0 ~, i:.:i (\J ~'l ' "° 0 0 0 ~ 0 ("\J :::i 0 z -rl •• ("\J .. Ul E-< r£I u i:c:i .....:i E--< z ~ II i:.:i ...,, ~<[ u C 0 r:::i J if) ~, ~ p., to z H >-w > a: ::, en --0 H IJ) H u w a: 0. 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'. i \ ' \ \ . \ ' \ ' \ h, 'r ·.\ c-p11 .. ~ C Al I ·_ \ -\ : \ ' '; \ ' i \. \ I \ ' ' ' \ \ '. \ A 10 , \ \ \ '" ,, _,. ' \ .D_:.1.<,"· e ... , .. , .), \ _; ,:·. '-;_ ;,_,; ' ',' ... ' ) . -- \ ~ A9, \I I \ \ \ \ ,,--~1 \_/ ---'"' -·' ·, \ ' ' ~ \~· ' ' ' ;\,1\4 ' ! I AS \ I I ! \ I Al \ ' \ /\6 I \ I SP1 \ ' \ A, re, ,_, \ I \ \ I ' - ' ' \ ' ' ' ' ' ' \ \ \ \ \ ' YA3 \ - / ' A2 ' \ ', \ \ i ' \ \ • \ \ .----,--, \ I \ ', '-J' \ ' -·/ ---,,,. .- \ \ ' \ \ i . .' ,,,. ' ,------. ' -· .. \ ' ' -----~! __c;22_·',-, --· ,··--.. ,. -' . ,-: ,::-' -,-''·' • ----· j" • _,. ,. ·-· .. ... _,, __ ,__,,_ ......... ______ ,_ -....... ,, ... . ... ) ,·-. ' ... _.,,._:. ,_,: ._,. . ··--_, '.,, ,-,; \{-•M ,.•,-·'"•--' \ ., ' -' ---------,_, --- ', - . ' . -__ ;_,_ '\ ',\' CONSTRUCTION NOTES: 0 ASPHALT PAVEMENT PER KCRS DWG. NO. 1-002 0 ASPHALT PAVEMENT PER KCRS DWG. NO. 1-003 0 CONCRETE CURB AND GUTTER PER KCRS DWG. NO. 3-002 G) CONCRETE VERTICAL CURB AND SIDEWALK PER KCRS DWG. NO. 3-001 -s.. 0 CONCRETE ROLLED CURB PER KCRS DWG. NO. 3-002 © CONCRETE ROLLED CURB AND SIDEWALK PER KCRS DWG. NO. 3-001 0 EXTRUDED CONCRETE CURB PER KCRS DWG. NO. 3-002 CALL BEFORE YOU DIG 1-800-424-5555 FOR FIELD LOCATION OF UNDERGROUND UTILITIES ' __ ._ r. 1- Taylor Engineering Co11sultants 205 Front St. S. P.O. Box 1787 Issaquah, WA 98027 tel. 425-391-1415 fax 425-391-1551 Project: SOOS CREEK PLAT Developer: C. Shaffer Corporation Mr. Charles Spaeth 6839 Ravenna Avenue NE Seattle, WA 98115 Job Data: /EC Joh #, Designed: Checked 294-jma WNT RP LMT Authorized Use: This drawing is issued for u: in the titled project only. It shall not be used far any other purpose without the express authorization and/a. adaptation by TEC: Permit Agency: KING COUNTY }\p/)11,, l.<J'{ f'oDl:ll EXPlRES 6/10/05 Issued for: PRELIMINARY 9/15/04 Rev. Date ----------- Sheet Title: PRELIMINARY LOT LAYOUT Sheet No: 2 Sheet of C - ; ·,' .. 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"1 ' .-• - \ I I \ '-" I -. __ '_·. u <-' ' .. _ . .. -. ', '' ';•., '' .,,. . ' •. \._ INTERSECTION AL TERNA TE 1 . . ,: ' ' ' --·· •-, .. --. -~ .... , •-,-- \ GRAPHIC SCALE 1 inch = 40 ·--· ' ' .. _.. ' ' \ ,.-',, \::· ' . ~\ ,l\16 \ .. \ · •.. ', ·. ,_, 999 \." Al5 i\,,···.- 1 I I . I I L I ' ' I \ -. ... ' I (i) . \,. \\ .···.· .· . ·. ..·. •· 1 • .· . :_,; .. f ,1·1·-··· •. , :· "· . -:. ' ' . ' •; i I. '·, ~ . l I I ' . . . .,-1!--/ ·, 4 1----1~: :,·,, \/ \ .· ,_. ".' '/ :,.:· - "; :._ }, _;. ,. <' . ' • -i . . _·{;;, I I '0.5' ' ' I I \ ',i, ' '"• 1 _; -.. 3 \ \ .. \ ' ', .. \ \ \ \ ' \ \ .· . ' : ' .\ .. ',, \\ ;, ' ' l \ ': ' ' \ , I , ' \ ' I ' ' ' ' ' . -. . ., "'''~""'"" "'"-· ·-.' ' ' . ' . ' ' \ :\ ;\ . ' SP4 \I_ 1 Al 2 · \ \ -; ·:, .-. \ \ ' .. \ \ \ A 11 I '\ ' ' \ JlOI CJ . ' \ \ I 1 .··.·· \/ I AA4 1 I I . . /. . I \ 'i\ , \ I A8 ; A7 I \ I ., ( AG\ \ •. \ \ : \ ' \ \ . ' . \ \ ;_ \ ', \ ' ' ' \ ' \ (' \ . \. \ '· \ >·c\ I , \ \ \ ' \ \ \ \ /A\3 . ' ' \ ; ' ' \ ' \ ' . ' . " '\ ' \ ' ' \ \ --··--·· .. ·--. -..... ·.·: .. ;:\. ,_, \\ . , ' .. r ,I ' ., \ \ -----~:- CALL BEFORE YOU DIG 1-800-424-5555 FOR FIELD LOCATION OF UNDERGROUND UTILITIES \ \ I ' I \ ' \ \ \ -,-' ' ' ( / ) / ... \ :-7 _t--· \ I . ' \ 1 -· ' '. \ \ '. . ".·: . \ '' _,,_ ',•,, • ', .-') ,'/,. CONSTRUCTION NOTES: 0 ASPHALT PAVEMENT PER KCRS DWG. NO. 1-002 0 ASPHALT PAVEMENT PER KCRS DWG. NO. 1-003 0 CONCRETE CURB AND GUTTER PER KCRS DWG. NO. 3-002 0 CONCRETE VERTICAL CURB AND SIDEWALK PER KCRS DWG. NO. 3-001 0 CONCRETE ROLLED CURB PER KCRS DWG. NO. 3-002 0 CONCRETE ROLLED CURB AND SIDEWALK PER KCRS DWG. NO. 3-001 0 EXTRUDED CONCRETE CURB PER KCRS OWG. NO. 3-002 •, -' •,; .' --- . '. : ;· ; .. ·>- { .,., -_,.,. !".') . --,. ' -; •t' . \. I \ \t • • ' t - . -." . ' ' €) ' ''> C )., I ' ) ' . ·1 ..... ·.·. - .,_ . ".,·,. -·· . '' '-.• ' i' • -- . -, ' ' --' ' --- · .. , --.... ---. . .. --, ' . ' . . "'·, .. , .'. ' " .. ·-' -~· ... "'·",> . . ···-.. .-. _-,.; ~; tnl J ' ' ' ' i . "' -;-. -' -' --' ' ;. \,. ) .·e• ,' • ,· p 1 ,) ''''.-~ - AL TERNA TE 2 -INTESECTION PLAN SCALE: 1"=40' \ -\ ' ., \ A6' ' _____ f __ . ··--·· ·-·'"-----\ ··., : .,-. , ... '.· ! \~ ' ·, ,' ·-':-· . ' \ (_' . . . .\.i. ; \_ ---- ... ·:, .. _._,. \ /'. -· > ·-' ' ", -. • •. . .'; '. ,'. ·- '. "f:; .. ,' ' .. ·: ' . ' . . ' ..... ----· -.. -.' ---.. _,, __ -,-----~~ -· --~---~-- ' ' ,J, . . .. . ' ' ::., (,.. ' .. -., ,.; __ , _._, ___ ' ;_ ... , ... --...... , .. __ , ... ---· --..• C ~< '~"' . j ( .' ( " . '' -.:,,- ' . r ~I vi/ ' ) I \ .. "-· ...... r • , •. .. ' ' . . ,-· . ' ·' _;_ ' -., " ·-.-j .. ALTERNATE 3 INTESECTION PLAN SCALE: 1 "=40' ' i ' .. \ ··· ... \~ ·. ' SPI \ -.. ,-' :" ' ' A \ ;-·,.,, -_____ ,., .... , ,.. __ :J· ,-. r--_, ' Taylor Engineering Consultants 205 Front St. S. P.O. Box 1787 Issaquah, WA 98027 tel. 425-391-1415 fox 425-391-1551 Project: SOOS CREEK PLAT Developer: C. Shaffer Corporation Mr. Charles Spaeth 6839 Ravenna Avenue NE Seattle, WA 98115 Job Data: I re• J I '-• [. Ql) tt• !Je s~qneo': Drown: Checked: 294-ima WNT RP LMT Authorized Use: This drawing is issued for use in the tilled project only. ft shall not be used for any other purpose without the express authorization and/or adaptation by T£C. Permit Agency: KING COUNTY f,l.P/>~ L.04Pe,ot)1. EXPIRES 6/10/05 Issued for: PRELIMINARY 9/15/04 Rev. Dote Sheet Title: PRELIMINARY INTERNAL PLAT ROAD IMPROVEMENTS PLAN Sheet No: 3 Sheet of <L I iii I ·\·' - ' ' ..... -,,. ... .. 'i ... . '• .- ',• . ' ,_ . ' -,·_- ' ,· ···~---·-· "" :i::. -·-\.' ~,:,,r-- I . . . ,. ' ,. .~ , ./ .·, \-·- ' ' ,. -,-, ' / ,, • ,,, ', __ ,--,, ,, ' ' ' ,'• . ' ·. ·.- ,"·, _,. 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' ' ·\ ' ' ----- -. ,. :·- ',,_,_ -\,·,'·\~\·::-.: .. -'·· ., . ' CONSTRUCTION NOTES: 8 ASPHALT PAVEMENT PER KCRS DWG. NO. 1-002 0 ASPHALT PAVEMENT PER KCRS DWG. NO. 1-003 0 CONCRETE CURB AND GUTTER PER KCRS DWG. NO. 3-002 0 CONCRETE VERTICAL CURB AND SIDEWALK PER KCRS DWG. NO. 3-001 0 CONCRETE ROLLED CURB PER KCRS DWG. NO. 3-002 0 CONCRETE ROLLED CURB AND SIDEWALK PER KCRS DWG. NO. 3-001 0 EXTRUDED CONCRETE CURB PER KCRS DWG. NO. 3-002 CALL BEFORE YOU DIG 1-800-424-5555 FOR FIELD LOCATION OF UNDERGROUND UTILITIES Taylor Engineering Consultants 205 Front St. S. P.O. Box 1787 Issaquah, WA 98027 teL 425-391-1415 fax 425-391-1551 Project: SOOS CREEK PLAT Developer: C. Shaffer Corporation Mr. Charles Spaeth 6839 Rovenno Avenue NE Seattle, WA 98115 Job Data: T£C )oh #: Dro. wn Checked-· 294-jmo WNT RP LMT Authorized Use: This drawing is issued for us in the titled project only. It shall not be used for any other purpose without the express authorization and/ar adoplalion by T[C: Permit Agency: KING COUNTY APP .l)r t.o <Ir o'" o t. I EXPIRES 6/10/05 Issued for: PRELIMINARY 9 /15 /04 Rev. Date •----------··- Sheet Title: PRELIMINARY GRADING AND DRAINAGE PLA~ Sheet No: 4 Sheet of a. :r: --,---------------------0~1---1-_ ,-_ ---------------------------.---------- 1 \-\ ' \ . ' " : '--.- '' ·" . ,> i\ ' \ '1--' \ \ ' -- 1 -i \ · 1:·:, I \ . \ ; .. ~, ,·' --"-,, ' .",,, \ \ \ \ \ \ \ -I . ' ---- \ I \ ' r . ,',· ,_ : r · --,, -' ' I I -. : l -\• i j I -. I I I . ' I · ---' 11 -'· : 1 I ' ' ' . -, 'if--------~~---'----------6!' ' Ii I ) I I ' I -·_ ---1 I, ·,----__ -------· -' 1 I -----_ ----; I ·---: -'f I-· -·-·· --·. I .• I 1 :, ,:i5i I ·----,c_..._/ 't ...... I I --. . • . -: I --. : '1. . ' -' -. I . ' : I ' ' \ ------\ \ \ ' '\ I I -. I I I I . I -. I I : I I I I I I .'II:, --i I I I ! \ \! \ : \ ' I -,, ' \ I I \ \ I I I -•,-•--'/ r ·· --.-_ ---_----; I 11 -· --' f' r 9· ():(? 1 i) I :! -·' ,0 \ .. , ----., __ -1 I 1PIPE OUTL~J \ ! I I \ \ -I . --_ -,_ /f----,--'----'----------------UI I~ 382.00 \ '· _--: 1 ·.-··-,-----·-· ,:1 : ----------------_\ \ I' I : / ,-' . " ~~----,I L _____________ / ·, .. , ' . ,· , ... ' •,, _, !_ j ; EMERGENCY OVERFLOW WEIR ' ' \ ,/' ' ,· ·-,, -~ ... I I , I I ' I I I I I " I I I I I \ \, \ \ ~ .. -- \ \ A15 \ I , ' I \ i ' - . I ' ' ' • \ \ i F "· \ \ • ' ' I i I I I I ' ,, ._, . ' --' ' . ' ' ' . ii: i--,1,-' ' ·-·- ' ' - •, ; . ' -'. '-1-· ' ' '. -·· .. , .,, ,r _-\_·--~-.'. '-·. · .. ·: 11·· ' '' :,. '.:···t ·_ '.'. --.-_ \. -' -' : -I\ --( ••• :0\ ' . it ::: '. ' '_ .. .--.,-- : .. , I '.-. , \ i\ --i --·_ -_ I ' _ -_-I , .... ' . -,, ----1· .. . -'- -. --· ' ' ~ '' . ' ----\1--c- ' --·---.. _· ,: ___ .'. ' -~-- --'" ----- _.,. • . • t,. ' CB TYPE 2~48" , WITH EilRQ'CAGE @Vitf'i}vt;' : RIM 387. 0 '•'-/ :;Ji j , IE 382.90 (IN) -"' . =-' IE 386.00 (b~T) PIPE_ INLET 'IE 383.00 • • I g I Qj - [1s I ::,,; I ;:J I liJ I ~I "-I Is I &! :. t-I • • ---J -;c-· , .... -. I J ) EMERGENCY OVERFl,OW WEIR 152 LF 12" SO @ 0.005/t/ft, I 35 LF 48" ~ INFIL TRA TJON TANK 10 LF 12" SO @ 0.029ft/ft CB TYPE 1 RIM 378.91 \· IE 375.84 (IN) . 'I _I -_ , I _ -- IE 375.74 (OUT) · .·\1 ':/ . -I i I .:ri--,I •''"-··"··.' ···-·-.... , ....... ' .. ) ' ,' ,_,, " ' ' ,,-,;_/ --,( I !." I :.·, _ _)_', • J --··-- If---'-"+-\_'""-' ~------_.,,,>:, •. :/ \ . ' BER_M ELEV. 385.00 ' -i' l'"'-::--~-------j,J_ L \ \ \ \ \ \ \ \ \ '-/,, . \ ! \ ' ---. _I -:,I· -<-~- I I I .... I ' '. '. ., I ' ',,,._, PIPE OU1LET, I 11En3 __ ii:82[i.8~31_ "-'r--,_~I !Ill] I --"-I .. / ----,>~ --------·- .-, ' .,_ .. ·' . ,\_,;·".~ --~-! ,,.-., -,--~ ·-r " ; . '"·, " - ' ' --. 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' ' . \ ·, '. \' ,. ·- ' / / \ \ \ ' \ ' - A12 \ - ' \ ' { ; \ Al 1 \ \ \ \ \ • ' \ I \ \ · r.r ·, -J '° ,. ,. , I ,.. ,, ' 1": ·' _;,_ A ,· . .-\ ~- \ \ \ ', \_ ' ' ', ,-' ·' • '/ ·-_ .. , \ {) [ _,"-; \ \ \ 11 ' I I \/ \ -I . " '. ' \ \ \ -.- ·" ·- ' ,. ' '. --" ,.-- \ \ --.. ' "' \ \ \ • ' \ \ \ \ \ \ "> ;._ :, \ ' . _,' ' \•' . \ \ ' ' \ • \ ' -._._-.·' 'i ·,. \ ,,_.· :/•(" -,-,_ ·., . ,·, .c. r-"\ !""' :" ·. :' --". _.· ' ,-, ,- ....... i -i' t . .-" )"' '·"'·. \ ' \ \ - '· \ \ \ I • /-1 /~ 4; I\ / ---~---~/\ \__) __________ --· -- GRAPHIC SCALE -20 1 inoh = 20 ft. ------:-/ \ \ I \ . ' . \ )'·-"' '-.. \ ( ' \ ., -----,--\ \ ·, ' ' ' \ \ _,--''\ -/----'\ --,,_../ ,-- \ / > \ " . ,,. \ ' \ ' \ \ \ ___ ,·.,__ _____ _ DRAINAGE NOTES: CALL BEFORE YOU DIG 1-800-424-5555 FOR FIELD LOCATION OF UNDERGROUND UTILITIES Taylor Engineerin1 Consultant! 205 Front St. S. P.O. Box 1787 Issaquah, WA 980: tel. 425-391-141! fax 425-391-1551 Project: SOOS 1CREE PLAT Developer: C. Shaffer Corporation Mr. Charles Spaeth 6839 Ravenna Avenue Seattle, WA 98115 Job Data: rEc Joh #: Designed: Drown: Checked, 294- WNT - RP LMT Authorized Use: Th;s drawing is issued I in the titled project on. sho/1 not be used for c other purpose without , express authorizaUoo 01 adaptation by TtC. Permit Agency: KING COUNTY Arr -1.\-L.o<i (loco -z. EXPIRES 6/10/0i Issued for: PRELIMINARY 9/15/ Rev. Date Sheet Title: PRELIMINARY INFILTRATION AND TREATMENT PLAN Sheet No: 5 Sheet of i / I \ 1-8" go· BENf, (MJ) 1W/ THRUST B~OCKING -" 227 LF 8" DI W --,_; ·_'. ' :_,,--, 05 -/ ( / 04 / / J! fi,"/'LA1VD "D" / o 319.98 c',Q F'A'ET ;--~ 26 - I .'/ 02 I . -, " ', 27 ! .. . ,:::';•:- • DI / ._., I -------.-. ------·- -- 28 .lssMH!..f ,RIM 4~6,10, IE'446.10 . -' ' . . ;-:-1. :,2· 9' ;:. -.- 62 i.F 8~ PVS ·' ss @ 0,195ft/ . -· ,, ,· . -,_,. "' ~- / -~ . ·-,.·., ,., ' ' .-. ,.-, ' .. 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(MJ)(lfL) 1 ] ()1-6\GATE VALVE {Flxl,IJ) j 53 LF 6" DI W _·..:.·---,,..:.1-,. ·SSMl{;J ·-· jRIM 416.39. · -.... · .. 6 IIE 408.3ij;,i .,. \ R[COHDED LINE PRESUMED LINE .-::. .. ' -, --· .-5··. -<-.. ,·. . ' . I I . ··, ' \ \ \ . ', ') .' ' ' • ---- ·--..... . ' /. SSMH-N RIM 429.34· IE 419,34 · '-I I . ·, ' -: ,, ' . ------ /--:, ·,, :,. : .: '• '-~ .' --. . I I I I • ' ' ,; i ; ;, .. ,,,. --·· :;'. 'c.; .... I --·. ' ----I ... - • ..... --· ,:.). / --\ -· ' -V ' .-\! -,, ,, :~:'.;' -r ._. , ., ,\ ' '.,' ,. ' -,----! ./" '}. -.-" --· -4.i "' --~---/ --'A'--"-' __ ,/ --·:\·' lJ .-. ' / ·'··"···-··-·-/-- .......... ~-------·' ........ _,_._ .... _ ...... -----------v •:: ) ' ·,-.-' " ' ·\--·-.··---····--- -· ... ,., ...... --. --- ' \ ' ~--'c--~-___c·-.. · -\ -_-_-__ ·_·_--.,. ,_· ·~""_--_··_-_·_-_· ··_··_·_·-_·-_·--·-· ·---____ _)._, __ --------- . -'.-.· ·---.'_:.~: .. '. --·1i ---·-·-• .... ,• -----·<-------·-';""'''""·'-,-- ... 'S.':E:~ · 1:9 2N1J ·S'T ·------+.-~-. --Cc-~-~-~ --p·~~~-c-'c -·.- ----.----· ---... -·-·- ..... _ ,·-,, ~-~---·-.. ---_______________ L _____ ----- ( ," h, --·- _;. --- '" .. ~ ... ' .-, WATER AND SANITARY SEWER MAIN EXTEj\JSION PLAN SCALE: 1 "=40' I =1-==-j : j .: \ ,._, . ·' . ; '-.· . ,"· ', ,, ':··:>-,, ' • 1 345.tF'a:,'oiw· -~ ; '" ",,C"',•·,7,··'",',, ·" ·,"• ·., C ',-~~ .-.. .-~W.-f!',;;PVC SS'-@ 1 6.08 ff ~· ·.· ·. . .,..----,_, .. ', ~ ' -~-------~"--. i .. . ·1-' . .;,.,,/ . '' -·-· ,' ! ' . _(' --- ·-,. : :· i ' _: ,- i :- ... ·i .-.-.' -:· • ' -: ' -1--. -, .:, .. t .. -·. j . ',2'<' l(j ,.,· . -' \ ,._;.I.···· ,,, •/ ), .... c:.· ' ' j ··\.-"··-- . ·, '(----·--.. ,··- -. I . .. , .. \ ' ----,~- •.J •./ ' . ,.· --'·~·~ '-'-·-: .. t .. -:-~\/-. ___ . ---·-.. --~" . .,.:·-\_. ·.,:; \;?,::,\" -" ' -· >.-·· ... /' ' . --·. •7. ;-_ /''. -- \ \ SSMH-M RIM 408.00± IE 398.00 ... -. \ .... - . \' ,_., __ . • ' .. -\--... .... ,_..-. ' ...... ·-· --·--.... , \ ··----:, '--' -.. ----., --., ') -1-r,.·1·· · - ' ; ;·,.-, . . •" ·'·· ·, ------. ' •. _ s . ' j .'-) SSMH-L RIM 382.18 IE 372.18 / / / I I I I -- \-.... ----·:,. -------' ------>. - \ ., ,- ' ' ·'-' . -· . -· .... ·--- / ' l -\ \ ,:-·-. c::: \ ! : > ./ / /' -- -_-... .·: . . ' ¢:'. ... . ,: ·.-· -·""""- :\;, ·;''- • ... : '-· .-. .. , .1 I ! \ -. \ \ \Al? \ I . \ ' \ '.\ \ 'I \ ' \ ·_ \ SP!J I \ SSMH-), I \ •. RIM 377.93 • IE 367,-93 Al 1 ' ' I .· '- ""\-...._ 1_ •• , ;_ \ ' \ \ ' \ I \ I \ •. \ -\·· -. '. \ \ \ ·, ' ',\ ,.--, ;;···,,,. -:,,-,·. ,:,t,· -,-·, . < ' ' '\ ' ·' " \ . . , .. -' ',f .,, .. ,., _ '.?-_,-- ,._ ,:-' --- ' -_· j _-: • \ -!. _- ' ""', ; . ' \ \ .. -' .. -- • : _J ,_... .·· , I . ---. I I ' -,: \ 1-B"x8"x6" TEE {W~¥</xfl) w / THRUST BLOCKING . / A 8 .. ·. ".\- \ I \_ i ' I f \ 1-;-6" GATE VA~VE (FL J) \ 1.i.FJRE HYDRAt)IT I'. , • \ ' \ 18 lF 6" DI W AA] I -.. \ ·1\ • \ ' ,,_ ! -- Al-\(\ '·' ' ,:-. A,, 'l " I •',, . I -fa.6 \ \ ' I . \ I ·-._ ,AS -- ', - / A? / \ \ \ -,·.--\. ' () , ' \ I . ' -I 1 /) 1 ··--:.:.SR"'--'',-• --';"-, ' - ' '--, . . \" 1 . ' -- .---, ,: < 1·:. -~-----· ,···---·-· ... -. , ... . - I ,, , ..... '·'· ' • ' • C.C-----'C.C---' --------' ,. ! ---.. . .. \ \ \ \ \ \ • \ ---v- .. : ... '·' .·, . \i---·, r I . I -t -r· --·--·- I . -. ' ,,:_·.: -r· -~-------··---------''~------- '·-·' . ·-.. ~-----------------------I [ ' -II GRAPHIC SCALE 1 inch = 40 CALL BEFORE YOU DIG 1-800-424-5555 FOR FIELD LOCATION OF UNDERGROUND UTILITIES • ~ • -1-- Taylor Engineering Consultants 205 Front St. S. P.O. Box 1787 Issaquah, WA 98027 tel. 425-391-1415 fQX 4?5-391-1551 Project: SOOS CREEi PLAT Developer: C. Shaffer Corporation Mr. Charles Spaeth 6839 Ravenna Avenue ~ Seattle, WA 98115 Job Data: TEC Joh#, D2signcei': !Jra wn: Checked: 294-j WNT RP LMT Authorized Use: This drawing is 1-<isued h in the titled project on/ shall not be used for o, other purpose without I . express authorization ar. adaptation by T[C. Permit Agency: KING COUNTY f,/?? * t.o'-1 fucoi EXPtRES 6/10/ Issued for: PRELIMINARY 9 /15 Rev. Oat, 1----------- Sheet Title: PRELIMINAR'V WATER AND SAN. SEWER MAIN EXTENi PLAN Sheet No: 6 Sheet of E ~ u n. I ---------., '"----------- -~~~ ~----------i 1 ' ' • , I -, ' i ! i I ! I L_ -- PVI STA = 13+15.95 PVI ELEV = 468.00 A.O. = -6.52 K = 10.74 70' vc 1 I u') a, 0 0) + N - (ij (.) > 1D "' --N "' N -~ N a, -"' ... "' •• ~ ~ > ~l~Q. :c O> (.""4 . I u::i r-,:: . :r.: ""T I.() "' ,,," ·(.1)-w • (/) Cl:: - _, -· ------1 HIGH POINT ELEV = 471.68 HIGH POINT STA = 11+69.32 PVI STA = 12+01.15 PVI ELEV = 4 72. 00 A.O. = -4.26 K = 23.49 100' vc l B" DI w . . . . . . . i - 8 ~-·it<' ~ ·-0 . --· . :·-. · ...... J . PVI STA = 10+90 PVI ELEV = 471.14 A.O. = -17.39 K = 6.90 120' vc . . -l 1 . . • i ' 40 ~F 8" PVC 161 LF 8" ~vc ss @ 0.020ft/tt) l 9~. LF 8" PVC ss @ 0.084ft/ft -::_:r:-::_::_c:_..+----'---~-------+-------'--'-----'---~-f---'----+---'------1 ss ~ 0.020ft/ft i ' . . . I --. . --. . . . I { . . . ) 'D "' <c)" 0 w OC) "' "' ..,_ w co f"') ci -<)- 10 1·-._ ,._ -~ -+ r;;: tj-r-- ~ .... 13+00 '2+00 ' ! ,c 0 <D ' -1, tj-r;;: ' • . . -• j ' ' I ' 11 +00 "' CD CD -+ _, j ) ; i j I rn U') "' ~ ________________________ ,, ____ "' . ·---------" ) 1 i I ! 1 ----------------------------·------ i OC) "' .. a, ;;;: ! PVI STA = 7+50 · pvr ELE:v · -· 409_39· A.b. = 13.16 K = 8.36 -110' VC "' "". en "' + (0 (0 :ii' (ij .. (.) w > :S ro ro 81 LF • 5. :%' --.: ----8 ,SD@ L3b LF 8" SD 048ft ft • @ d.d7'.ltt/it ; 62 LF 8" PVC -SS / • I 56 LF. 8" PVG ss 141 ;F 8" PVC SS @ 0.163ft/ft -' @ 0.1951\/tt: @ Q.191ft/\t J . . . . . ~ . . . . . . . J . 1 -. --. . . 1 1 ....... l ~-"' r--. 0 ~ w -tj- 10+00 ' tj--"' I') tj-t1l N ~ I'-(0 "' ~ ITT "' "' ~ "' 00 tj-,,, N N I<) -+ -tj-tj-,,-:.: .;- 9+00 8+00 ---------------~~---------- 124TH AVE SE PROFILE SCALE: HOR. 1"=40' VER. 1"=10' ' . ' 64 LF 8" PVC SS ' @ 0.208ftjft 0 ,c, -o-, n N en "' . "' <O r,r) --0 ~ C.)) ,-tj-+ ,a r··-) 7+00 . -----------------~ GRAPHIC ..... -,----------------~--------- PIJ! STA = 6+22.13 P\ii tLEV . ·403'.oo . :A.O. = -9.00 K = 10.00 90' vc -• ~ l-.... ~::, I ;;; 0 .,~~ co 0, a, I') 0 • (X) r---" • ~ ~g "' ,...: "' en I'--~ . . . .,.., "' --+· . I "' "' oiE~ w w ci:i ~ ~ (D m . -. ,. 53 LF 12" S 0 0 •• ""•-'"t .• · @ o.oosit/ft -' I . . -. . ' . -- 230 L~ 8" PVC SS @ 0.08!3ft/ft -' ~ ---· -.,. V) 0 "' "' ~ ,o "' tj-"' CD co :,i ii'{ i'') --) 6+00 .. \ '1-g :g w e, "' 5+00 LOW POINT ELEV= 379.15 ·LOW POIN'f ·STA· : 4-t03.50 PVI STA = 4+50 PVI ELEV = 378.90 A.D. = 14:51 K = 6.89 ·100• VG- ·-·--'•" ' -. ~ ·, . ' '""'" 8"_D1 W "' -..... o, g r··-,,-; "' -----------~------,- :.,-0.51%, 264 -+ "' -•l) ::.: ,n en CD oi r--I'-I'-r;; ,0 ,, "' 4+00 <D <D 5 .;!; II > Q._ r--. o, c--,,·1 .,, <O a, r--- "' II > Q._ ; 2" SD @ 6.009ft/fi " 0 ~ (0 R 0 ci w 00 ,,, "' "' 31-00 -1.16% I', i 0 ci w ~ ,,, 2 I 00 -co • ~ (J) w w 00 ........ w z -...J I ~ ~ -"----------------------------~-----.. --------------------------------~--------------------------- N SCALE CALL BEFORE YOU DIG 1-800-424-5555 FOR FIELD LOCATION OF UNDERGROUND 1 inch = 40 UTILITIES -1·----- ·-r --. ----+-. i. , Taylor Engineering Consultan·ts 205 Front St. S. P.O. Box 1787 Issaquah, WA 98027 tel. 425-391-1415 f<J~ 425-391-1551 Project: SOOS CREEi PLAT Developer: C. Shaffer Corporation Mr. Charles Spaeth 6839 Ravenna Avenue N Seattle, WA 98115 Job Data: T[C Joh #1 Df'slgned: 294-i • JJro. wn: Checked, WNT RP LMT Authorized Use: This drawing is issued f< in the titled project on!, shall nat be used far a, other purpose without t, express authorization an adaptation by T[C. Permit Agency: KING COUNTY p.f'P ',ii (...O</ Pol.)o!. EXPIRES 6/10/< Issued for: PRELIMINARY 9/15, Rev. Date Sheet Title: PRELIMINARY ROAD AND LnlLITIES PROFILES Sheet No: 7 Sheet of • ...... I'-.. • t- I CJ) w w 00 -w z --' I ~ ~ ------------------------------·---· ---------- PVI STA = 1+00 PVI ELEV = 382.00 . · A.O. = 7.22 : K = 11.08 . . . . . 80' vc ==--i:====;:::;-'.:;:1;--~! = -. -::: ----------T-- j 0 <D ·+ 0 en §; OJ "' "' • ..,. "' "' w §; m 1 · 480 : 460 : 420 : 400 ! 380 ' r I ' ' --l------i------+-------i------1' DATUM ELEV 865.00 2+00 1+00 .... ------------- 1--0 O') -,n"' 0:) 00 C) "' 0 I 00 ------------------··-' ' ... -. ___ ,, ______ ,. ·- 124TH AVE SE PROFILE SCALE: HOR. 1"=40' VER. 1''=10' -------------------- 4 a· . ... Di W. ; ... -.~--~'., .. "-.-~.---' .. -.· ,. ··: : ""''' ____ .,,. _, .. _ I • --\•.-,.,.-~-' ... --. ' . 93 LF 12 SD @i 0.005ft ft DATUM Ells 880.00 -..j-0 . ,-.. a, . ~~ 0+00 I 156 LFia· PVC ss:@ 0.019ft/ft I 1 +00 N CUL -DE-SAC PROFILE SCALE: HOR. 1 "= 40' VER. 1"=10" I ., ., .. • r • I ' . i . I . ' . I . I ' . ' . ' ' ' . ' ---------~ GRAPHIC SCALE 1 inch = 40 ft. PVI STA = 0+ 76.57 PVI ELEV = 406.00 A.O. = 10.75 K = 9.31 100' vc ~ ~ <O ........ N.~. + .,. 0 w ~ ~ : 420 0.39, · I 5!> LF. 8" S[i ·. @ 0.016ft/ft: i . ! . . ! . I 168 i.F s· Pye ss@ o.12s1t/tt: • • • ' I "~ 00 >D "' ,n 0) .-a, -'" "' CT) ~ -§ ~ :.: c, c, tj-tj- 1+00 8 CUL -DE-SAC PROFILE SCALE: HOR. 1"=40' VER. 1"=10' . I ... a, a, ,,, ; 400 i ' DATUM ELEV 880.00 o+oo CALL BEFORE YOU DIG 1-800-424-5555 FOR FIELD LOCATION OF UNDERGROUND UTILITIES Taylor Engineering Consultants 205 Front St. S . P.O. Box 1787 Issaquah, WA 98027 tel. 425-391-1415 fax 425-391-1551 Project: SOOS CREEK PLAT Developer: C. Shaffer Corporation Mr. Charles Spaeth 6839 Ravenna Avenue NE Seattle, WA 98115 Job Data: TEC Job#• Dr2si9neo'., IJra wn: Checked• 294-imo • WNT RP LMT Authorized Use: This drawing is issued far use in the titled project only. It shall no/ be used for any other purpose without the express authorization and/or adoptatian by TEC. Permit Agency: KING COUNTY /\PP !_w !...O'i P ooo 1. EXPIRES 6/10/05 Issued for: PRELIMINARY 9/15/04 Rev. Dote Sheet Title: PRELIMINARY ROAD AND UTILmES PROFILES Sheet No: 8 Sheet of ,fj,1 I. 11 • I .I ,,)'1 .I !t'.: i,. I' ". r • ,, .. I -.,._ ·- I -D 1 -. -• ' -- ~[E~D ~~9 uWfo ~~ ~~ ~C@[E @\ [E~~\A~o~o',. . \ . \ \. \ ' ' ,. \ ' ...-, ,-----1 A'.W i,'.L,,• · ' ' . , \ ,fi\w \_ . .-. .--· ' . ' , ,· ,' . ' , . ; f. ·_,''; . !' ·i ... . ,, .· · .. • ,··.. . . -,· " . ' ... ' ·_.,-, ---<·· . -.;· :;' ' ::-; .-·,-·,,.-·_:f.>:,·,;~·-: .. '°'""''' ' . ' j i --· . ·::. ···-~\17 •, " • ' ,• ' _. . ' ·" -' . . ' --· , -· . . . .. ; ' ,· ' ·i.··.~ .• ,:·,,:__.'.•·'·',-~ \ ' \ OS ,. C:".c•;j_ '-~·-:,,:~i,_,':,-'; .. ,· . ; • • ., ·· .... ,1,1.., •.... ,1.· .. , ... 7 .,Jc·qr·, .. , .. 1. ·, -,n ·, ,~· , , <"·',,.,,,,;, ,•/''j'Y',,; .·;,"c-'';,: '·-,-···-··- .,-k _1 i JU' INGRESS & C:G'1[$S ·,. 1 j_ __ __ I _.y /"' • :: ·. ifl:!'LANP .. a. ' '..lJ }99f1 5(J l:'!:,"i,'/' ;--?6 ;oz .'MUI " 25 .i.037 ' ' . ' i ; ,,·i;,;;:,:,,, ,·.-:. ~._,{.·--. ! ' ·.. ,, ' . ' . -----'-fl··_, :-,.· ~.-.•.· .•. '_'"-. ·§4fl· .... -;-,. r-r· •,. ".-a -... '-·- • • .. , .. ' ~~ , I ' ' • • I ' I ' ' . .c,o-· ~·- . ' ; -··' •' -.. ,-.· L-' -1::-· ., •;- ',' ;, ·, -_--_. ,. :'.' ;, .. -• ---... -. . ' I EXCEPTIONTOiRLAT: . : •. THIS 240.0' BY 1130.8' PORDON OF ' . PARCEL NO. 6.~· 9900=0220 SHiltr BE' LEFT OUT OF . LAT LEGAL DESCRIPTION AS IT WILL BE $£GREGA TED VIA A . BOUNDARY LINEI ADJUSTMENI · , ,. ; I .f ,, I I 21 1.15V 20 4,270 . ~-. ' ,-;'. :, :: ._\ ;;<i-··•;.... ~ ,. .p 130.8' ---· \ \ _. \ ' ( , , .. ,i·: -:::~ .. ·: ·:-t-I.'-'-" ; ;; i~ta '. \ I \?;j A14 ·. : 8 <:' '--1.Jil "· . -· .. ,' _.,,, . . ' <·> . .-.-' \·. -: \ '3/l '. .4,41/'J ' 'c,.' , '. ··r; i 998 ' -_ /'.· i:in -' ,,_. ' ~ .. ·. . . ·. . . . ' ' . ' -. .. ' ., .. ,· _-,;·,~---- .. , ,.. \ ;ci ' A1:i' . , ... ' \ . . \ \ . :t · .,,_ SP1 ·; -I ', ',\ \ \ .. ,, . . I ' \ . . •. ·1' .J" ' ., -1----:J..:--· ."-. -. · c. _ _,.-:.--, · . · r.• ~ '.,: '" . _;... .,.....-· · ·· ·/,'>. --, _, .. ·· ...•.. ,.,·.' ..• ·.·.' ... ·,· ... 'i .. '.•.i ••.. · •.. ·.·.•. \ .• ' ·, 'a ,, . ' . '. ' '",·;;,•:•. ' . , ' .. . .... : .. ·---. ·.'.-.. ', .. ,: .. -.... ::-"··· ·. ' ; -' ·-· '""" ---___ , i-~, ·, --...... --.-________ -:.s. -: .. .. ,. . ,'-·--. .., _.:,•, --~-.-5 " ., ,,::: ,!.,>· .. ; ---·-.-·-· .--. .. ---··' ' --·c'· -.. ' --., '"',"'•" ' --,· ... _, ' "" ,-"~-_,-.'. ...... ' --• , ; . ' ·-.... ··-·····-·-· '.' ······ .: ... '-... ··•· ,:;_·,····,·········-'· .. '.'.:.'.... ... · .. ,. "{S:.~:'ffJZND ST ... ···, ... ·.·.~-',-, ·; \" ·. • ---''--'__..__-'-"-. --)· ··, :· •.. " .,., ·? ,~ ;.-•. --· \ /' ' ' ,<,;; .,-·~·,; S ,• ' • ,.:" ." _;_: •• -'~,~-• _J_ "••••: •"" :' __ , •• ····•• "'/ ;-> ,,' _'r .• ,!, , • .• .i ..• ,., , ••' _. ,_ """'" 'C , ••-, ';.''• " " " ' .-,_{,', ,,, O -••,~-• • -', ,•,_ -·-..,is.,.,,;~,•<, ,._, ,,.. . -., ., ,;,,.;__,_., ............ --.,'-·-·>---·',".,..,, .... ,,-.,c . ._f,'7C'"'<"•, , ' tc">-'•' ';··;.,-·:, ... ,--s,'\ ... _:.'~,;--• '·""''•.f ._ .. _.. <,;:<_~·)•,·,.:-').'/.":''.'.·-,. --. ---· _. .. .c..<·'"';,.C:--' '•:C,; --• • •.•.•.• ,., ·••• ·:--'-1 ... · ·' .. ·.-.••.• , .• ,-.·.,."-' --' ,., ·->,c'.c·'c~ .. a··,_.'-,._'»;:.;-,· \:. ---,c,··_. i _'-; -~--.:,:::-': ·,, . .- a· ·.~. . ,-. :·-. ,, . ·---·:."-,;;____ _ .. _ ·-·-. -.. ' -·· GRAPHIC SCALE N '·--' , ' i ,, ' ' PROJECT PLAN SCALE: 1"=100' PROJEeT DATA: LEGAL DES CR/ PT/ON: IJ\1PERVIOUS SURFACES: . -·. ORDER NO.; 1082861 LOT 1 OF SHORT PLAT NUM8£R 278113, RECORDED AUGUST 28, 1976 UNDER AUDITOR S FILE NUMBER 7808281028, BEING A PORTION OF TRACT 13, NORTH\11:STERN GARDEN TRACTS. DIVISION N0.5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OTHER PROPERTY 90. IN KING COUNTY, WASHINGTON. SEE EXCEPTION ON PLAT SITE PLAN. EXISTING IMPERVIOUS SURFACE AREA = PROPOSED IMPERVIOUS SURFACE AREA = NET INCREASE IMPERVIOUS SURFACE AREA = ·13,341 S.F. TOGETHER WITH AN EASEMENT FOR ROADWAY ANO UTILITIES PURPOSES OVER THE EAST 30 FEET OF LOT 2 OF SAID SHORT PLAT NUMBER 278113. AND TOGETHER WITH AN EASEMENT FOR ROADWAY AND UTILITY PURPOSES OVER THE EAST 30 FEET OF ltlE SOUTH 300 FEET OF TRACT 12, NORTHWESTERN GARDEN TRACTS. DIVISION N0.5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OF PLATS, PAGE 90, IN KING COUNTY, WASHINGTON. (PARCEL NO. 619900-0260) ORDER NO.: 1121061 THAT PORTION OF LOT 12, NORTHWESTERN GARDEN 1RACTS DIVISION N0.5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OF PLATS, PAGE 90. IN KING COUNTY, WASHINTON: EXCEPT THE FOLLOWING DESCRIBED PROPERTY: EARTHWORK QUANTITIES: CUT FILL 4,429 C.Y. 7,344 C.Y. 205,715 S.F. 192,374 S.F. \ \ \ BEGINNING AT THE SOUTHWEST CORNER: THENCE NOR.IHERLY ALONG THE WESTERLY LINE 300 FT.: THENCE EASTERLY PARALLEL WITH TIJE SOUTH LINE OF SAID LOT 135 FT.: THENCE SOUTH PARALLEL WITH THE WEST LINE OF SAID LOT, 300 FT.: THENCE WESTERLY ALONG THE SOUTH LINE OF SAID S1REET TO THE POINT OF BEGINNING. SEE EXCEPTION ON Pl.AT SITE PLAN. NOTE: THESE QUANTITIES ARE FOR PERMIT REVIEW. CONTRACTOR SHALL BE RESPONSIBLE FOR INDEPENDENTLY DETERMINING ALL QUANTITIES FOR BIDDING AND CONSTRUCTION. {PARCEL NO. 619900-0240) ORDER NO.; 1125307 LOT 2, KING COUNTY SHORT PLAT NUMBER 338021. AS RECORDED UNDER KING COUNTY RECORDING NUMBER 8902210370; BEING A PORTION OF TRACT 11. NORTHWESTERN GARDEN TRACTS DIVIDSION N0.5. ACCORDING TO TI,E PLAT THEREOF, RECORDED IN VOLUME 47 OF PLATS, PAGE 90. IN KING COUNTY, WASHINGTON. EXCEPT THAT PORTION NOTED AS "EXCEPTION" ON THE PROJECT PLAN ABOVE. (PARCEL NO. 619900-0220) VER71CAL DATUM NGVD 29 VERTICAL CONTROL: - BENCH =RM 289. A CHISELED "X" ON TOP OF THE SOUl}IWEST BOLT ON A FIRE HYDRANT AT THE NORTHEAST CORNER OF THE INTERSECTION OF 124TH AVENUE SE. AND SE 192ND STREET. ESTABLISHED BY CH2M HILL. INC. ELEVATION= 385.76' \ I GENERAL NOTES: 1) ALL CONSTRUCTION SHALL BE IN ACCORDANCE '111TH lHE KING COUNTY CODE (KCC), ROAD STANDARDS (KCRS), AND THE KING COUNTY COUNCIL'S CONDITIONS OF PRELIMINARY SUBDIVISION APPROVAL IT SHALL BE lHE SOLE RESPONSIBILITY OF THE APPLICANT AND THE PROFESSIONAL CIVIL ENGINEER TO CORRECT ANY ERROR, OMISSION, OR VARIATION FROM THE ABOVE REQUIREMENTS FOUND IN THESE PLANS. ALL CORRECTIONS SHALL BE AT NO AODl110NAL COST OR LIABILITY TO KING COUNTY . ,,\ ..,, ,.-..... ,...,...,,.., l'""I ,-, ,,.., ,-.-, """""' .,., .,.. ,,..,.,_,-,...., • ,,,.. • • • • _. ,.. .... ,..,, ,..,.., n..-,,.,...,.._ • ,.,.,...,._,-,.,..,.'"" ..-.-.. ...,_ ,,-LJ !Mt. Ut.:>1\:iN t.Lt.Mt.N I::, WI I HIN I Ht.:::it t'LAN;) MAVt. l:1ttN t<t Vlt. Wt.U AVVVKUJNU' I U J Nt.. KING COUNTY DEPARTMENT OF DEVELOPMENT AND ENVIRONMENTAL SERVICES (DDES) ENGINEERING REVIEW CHECKLIST. SOME ELEMENTS MAY HA VE BEEN OVERLOOKED OR MISSED BY THE ODES PLAN REVIEWER. ANY VARIANCE FROM ADOPTED STANDARDS IS NOT ALLOWED UNLESS SPECIFICALLY APPROVED BY KING COUNTY PRIOR TO CONSTRUCTION. 3) APPROVAL OF THIS ROAD, GRADING, AND DRAINAGE PLAN DOES NOT CONSTITUTE AN APPROVAL OF ANY OTHER CONSTRUCTION (E.G. DOMESTIC WA'fER CONVEYANCE, SEWER CONVEYANCE, GAS, ELECTRICAL, ETC.} 4} BEFORE ANY CONSTRUCTION OR DEVELOPMENT ACTIVITY, A PRECONSTRUCTION MEETING MUST BE HELD BETWEEN THE DDES LAND USE INSPECTION SECTION, THE APPLICANT, AND THE APPLICANT'S CONSTRUCTION REPRESENTATIVE. 5) A COPY OF THESE APPROVED PLANS MUST BE ON THE JOB SITE \\I-IENEVER CONSTRUCTIOM IS IN PROGRESS. 6) CONS'fRUCTION NOISE SHALL BE LIMITED AS PER KING COUNTY CODE (SECTION 12.88); NORMALLY, THIS IS 7 A.M. TO 10 P.M. WEEKDAYS AND 9 A.M. TO 10 P.M. ON WEEKENDS • 7) IT SHALL BE THE APPLICANT'S/CONTRACTOR'S RESPONSIBILITY TO OBTAIN ALL CONSTRUCTION EASEMENTS NECESSARY BEFORE INITIATING OFF-SITE WORK WITHIN THE ROAD RIGHTS-OF-WAY. 8) FRANCHISED UTILITIES OR OTHER INSTALLATIONS THAT ARE NOT SHOWN ON THESE APPROVED PLANS SHALL NOT BE CONSTRUCTED UNLESS AN APPROVED SET OF PLANS THAT MEET ALL REQUIREMENTS OF KCRS CHAPTER 8 ARE SUBMITTED TO THE ODES LAND USE INSPECTION SECTION THREE DAYS PRIOR TO CONSTRUCTION. 9} DATUM SHALL BE NAVO 1988 UNLESS OTHERWISE APPROVED BY DOES. 10) GROUNDWATER SYSTEM CONSTRUCTION SHALL SE WITlilN A RIGHT-OF-WAY OR APPROPRIATE DRAINAGE EASEMENT, BUT NOT UNDERNEATH THE ROADWAY SECTION. All GROUNDWATER SYSTEMS MUST BE CONSTRUCTED IN ACCORDANCE WITH SECTION B1 3.02 OF THE APWA STANDARD SPECIFICATIONS. 11) ALL UTILITY lRENCHES SHALL BE BACKFILLED AND COMPACTED TO 95 PERCENT DENSITY. 12) ALL ROADWAY SUBGRADE SHALL BE BACKFILLED ANO COMPACTED TO 95 PERCENT DENSITY (WSDOT 2-06.3) . 13) OPEN CUTTING OF EXISTING ROADWAYS IS NOT ALLOWED UNLESS SPECIFICALLY APPROVED BY ODES AND NO'IED ON 'fHESE APPROVED PLANS. ANY OPEN CUT SHALL BE RESTORED IN ACCORDANCE WITH KCRS 8.03 (8}3 . 14) THE CONTRACTOR SHALL BE RESPONSIBLE FOR PROVIDING ADEQUATE SAFEGUARDS, SAFETY DEVICES, PROTECTIVE EQUIPMENT, FL.AGGERS, AND ANY OTHER NEEDED ACTIONS TO PROTECT THE LIFE, HEAL TH, AND SAFETY OF THE PUBLIC, AND TO PROTECT PROPERTY IN CONNECTION WITH THE PERFORMANCE OF WORK COVERED BY THE CONTRACTOR. ANY WORK WITHIN THE TRAVELED RIGHT-OF-WAY THAT MAY INTERRUPT NORMAL TRAFFIC FLOW SHALL REQUIRE AT LEAST ONE FLAGGER FOR EACH LANE OF TRAFFIC AFFECTFD. SECTION 1-07.23," TRAFFIC CONTROL,' OF THE WSDOT STANDARD SPECIFICATIONS SHALL APPLY IN ITS EN-nRETY. ,0 S P/J ~"~ DR ~ ~ jlj -- SE 176 ~Ti--; ' \ VICINITY MAP SCALE: NTS CIVIL SHEET LIST: 1 COVER SHEET _ EXISTING TOPOGRAPHIC SURVEY (BY OTHERS) 2 PRELIMINARY LOT LAYOUT 3 PRELIMINARY INTERNAL PLAT ROAD IMPROVEMENTS PLAN 4 PRELIMINARY GRADING AND DRAINAGE PLAN 5 PRELIMINARY DETENTION AND TREATMENT PLAN 6 PRELIMINARY WATER AND SANITARY SEWER MAIN EXTENSION PLAN 7 PRELIMINARY ROAD AND UTILITIES PROFILES-1 8 PRELIMINARY ROAD AND UTILITIES PROFILES-2 LEGEND: ASPHALT PAVEMENT r-· I ' [ ,,_· ._..__'-4_,·. · CONCRETE PAVEMENT PROJECT LOCATION SE 192ND ST N FIRE HYDRANT THRUST BLOCK ~ VALVE V BEND FITTING DITCH OR SWALE FLOW LINE ~ WATER METER AREA DRAIN [I CATCH BASIN TYPE 1 ~ CLEAN OUT --RD ROOF DRAIN --FD---FOOT DRAIN STORM DRAINAGE LINE (SD) -r,-r Tayior Engineering Consultants 205 Front St. S. P.O. Box 1787 Issaquah, WA 98027 tel. 425-391-· 1415 fox 4?5-391-1551 Project: SOOS CREEK PLAT Developer: C. Shaffer Corporation Mr. Charles Spaeth 6839 Ravenna Avenue NE Seattle, WA 98115 Job Data: T[C Jo.b #, Dcs1/1nec,',, Dta :;,n: 294-JMA WNT RP LMT Authorized Use: This drawing is issued for use in the titled project only It shall not be used for any other purpose without the express authorization and/or adaptation by T[C. Permit Agency: KING COUNTY AP{)~ L<>4f'oooZ, ABBREVIATIONS: 6/10/05 .__ ___ _ EXPIRES AD APWA CB c.o. C.O.K. CSBC CSTC DEV DISP. E ESC EX FD FDC FF FH GV HYO IE K.C. AREA DRAIN AMERICAN PUBLIC WORKS ASSOCIATION CATCH BASIN CLEANOUT CITY OF KIRKLAND CRUSHED SURFACING BASE COURSE CRUSHED SURFACING TOP COURSE • DEVELOPMENT DISPERSION EAST EROSION AND SEDIMENT CONTROL EXISTING FOOTING DRAIN FIRE DEPARTMENT CONNECTION FINISH FLOOR FIRE HYDRANT GATE VALVE HYDRANT INVERT ELEVATION KING COUNTY LF LS MAX. MIN. MJ N NTS o.c. PLS RD R/W s SD STD STL l'/P w WSDOT LINEAL FOOT LANDSCAPE DESIGN MAXIMUM MINIMUM MECHANICAL JOINT NORTH NOT TO SCALE ON-CENTERS Issued for: PRELIMINARY 9/15/04 Rev. 1 Dote PROFESSIONAL LAND SURVEYOR · 1 1r~~ -)" \ , , 'VJ ROOF DRAIN RIGHT-OF-WAY SOU'IH STORM DRAIN STANDARD STEEL TYPICAL WATER l I' ~ \'' -. , 0 .\ ' ":--. '''\'·' /' \\.'- ' j / ' 'li ',-. ' . \.'-._:1 , \ -. 'f\ ' \ WASHINGTON STATE DEPARTMENT OF TRANSPORTATION Sheet Title.' CIVIL DATA AND GENERAL ·NOTES Sheet No: CALL BEFORE YOU DIG 1-800-424-5555 1 FOR FIELD LOCATION OF UNDERGROUND UTILITIES -- i . ' ' • -------- LEGEND SOOS CREEK PLAT _ _,,.._ ~ CATCH BASIN ()_ POWER POLE W/ UNDERGROUND °' POWER POLE 1"=50' • SECTION 33, TWP. 23 TOT AL AREA 7. 71 ACRE'S TOTAL PROPOSED SITE AREA= 6.99 ;'}'.) (t-Y· ,,{\' .:\{)>J N, RGE ACRES ···-· ··-·· ... -·---"·--·---. '" _..,_ ___ ··.---. -------·· .. De ,,;;> .,l,' /t({~{{<:0 0 ~,--,--.. ~. ~~~t+f-+,-,';f ~''7"7'i7r,· .• .,··· / ----------CASE MONUMENT BRASS IE. W /PUNC1I VISITED 1-26-04 ' ,--• •· .. ® -0 lO (X) 01 --w - (() 0 (') -• z· •, .. ·. -~ \··----------533.41. (M) -.. ·-... ···----.... ----....... . ........................... CASE MONUMENT --BRASSIE W /X VISITED 1-08-04 I I R __ .. ----··· ······ CASE MONUMENT '-----BRASS I l!i W /X VISITEJJ 1-08-04 I -,~_. " (>,' -, - I M 04 WETLAND B' o> ~ 998 SQ FEET \ \ l \ I I NON REGULATED ~ . ~ ~ (JJ " P-1 0 M f5 ~ z 'o 01 7 .. ·----------------_, k ··• /~ §; (ij' 0.1 fl "' 0 0 ~· z I SHED T.B.R. I ro (\j t""i!?, " " \ (;11 ;;• APPROXIMATE DRIANFIF.'LD " , PER LAND OWNER . I / T.B.R. I ID : D1 & .; "·-r.;) 11 .• ~ I ~ UJ i"q" ~ \ , l l1) • \,-.,,. (U ;( c:;; ·;\ ' 't;J->\ 'i I fd~~ ~ -~; ;, \ , .. "'I" ~ \j ' ' ' ~,\ '\_., I <D 0 " CV 0 "' ( ) 0 0 "" I I ~ . 0 ~ ~ i OJID•N~~~~~O l OJ m (D [D m (~ UJ OJ "' (D (JJ (D I ) ~ @ ~ I \ \\ ~ -.r'c l 4 0, <,/, 0) ,!) <i "' 0 <, ~, 0 ~ ' i-0.. ~'-' ...... -:-' <' <' "'""' <' '.'-' -~4 0 0 0 i <t --r '<;f I ) 0 ~ ' ( 0 Ol (') ' 0) 0) co UJ ([J "' - 0 0 $1 %!~ ~ \ \ 52.oo· "' lD " I - 0 q 0 0 01 w ' {JJ ~ l1) p ..., z .i ' I 0 w > __J 1- 0 Z rJlW UJ ,e: (]'.f- (J) w::, m, <( _J UJ __JWz <CZH I ~-1 _J (J) __J UJ t->-u za:z w «w ZCllL :CZ U::>u, <COH 0 (Il :r: 0: f-u ... ZHO W>!- w ,_ 0 z I I S89 '40 '54" W 1322. 30' (P) - 8 OJ\D roro w"' ) ":::i::::~ ~- ; \ ~ '?-, "' ":;, :,. S1, I' ----• -': 0 ~4 ~ .~,; \ ' ~ -~-,. "'- "-' "' z'\ \ 1"t-...... -f---1'1;;.-4r1M"i\+.\\~f+~:,,,,..~..:::q, "'~ & lie ·r, ·11·\ \\\2\ 0' \"' i . . ' : '/. N79 '31 '15"E 50.77' I \ 5 E. i I 0 ii I 0 "' (D \ aJ "- ('l WM <D en 30' 0) ,-,n · A :15 A13 I SP4 ® PHONE RISER [BJ WATER METER B' FIRE HYDRANT ¥ GUY WIRE @ GAS METER /);, WELL LOCATION * WATER VALVE ® SEWER MANHOLE @] GAS VALVE ~ EXISTING SEPTIC TANI< 0 CALCULATED CORNER 4 CULVERT )l SIGNALBOX (P) PLAT (M) MEASURED ·-X X-FENCE -·-----····-······· EDGE OF GRAVEL ---It ASBUILT CENTERLINE __ ,1_,__~,,_ EDGE OF PAVEMENT ~~~~~~Wv~ WETLAND ., · ·· · -WETLAND BUFFER CONCRETE WALK ---·--'-'~.___._,___,. PROPOSED BOUNDARY -------------CURB AND GUTTER SURVEYORS NOTES: 1. THIS SURVEY DOES NOT PURPORT TO SHOW EASEMENTS OF RECORD OR THE LOCATION OF UTILITIES -EXCEPT AS SHOWN. 2. THE METHOD OF MONUMENT LOCATION WAS FIELD TRAVERSE. THE INSTRUMENTS USED WERE: GEODIMETER PRO, ROBOTIC TOTAL STATION. 3. THIS SURVEY MEETS OR EXCEEDS THE MINIMUM STANDARDS SET FORTH IN WAC332-130 . 4. BASIS OF BEARING; MONUMENT LINE SE 192ND ST. AS PER PLAT OF NORTHWEST GARDEN. 5. VERTICLE DATUM: NGVD29 6. CONTOUR INTERVAL: 2· 7. WETLAND DELINEATION BY H&S CONSULTING DECEMBER 2004. 8. OFFSITE BUILDING LOCATIONS PROVIDED BY CLIENT. 9. ONLY ABOVE GROUND UTII_ITIES WERE LOCATED THIS SURVEY. THE EXACT LOCATION OF ALL UTILITIES SHOULD BE VERIFIED BEFORE ANY DESIGN OR CONSTRUCTION. 10. ACTUAL FIELD SURVEY I BENCH = RM 289, A CHISELED "X" ON TOP OF THE SOUTHWEST BOLT ON A FIRE HYDRANT AT THE NORTHEAST CORNER OF THE INTERSECTION OF 124TH AVENUE SE. AND SE 192ND STREET. ESTABLISHED BY CH2M HILL, INC. ELEVATION= 385. 76' ~, z \ •'-1 :l 120.) S88 '56 '42"E "' , A 1 cf.i> 30' EASEMENT PER I ' HORT PLAT.STRIP TO BE DEEDED 0 COUNTY FOR RIGHT-OF-WAY: ffl ! L-1 t/00' . UFF ct) ~\ . \ ' : ,.---• ' ' . . k ! JA9 0) ~\ ~ lD ~ -;J (;:;AA - AA3 ;!I C, 7, A8 REFLACED WETLAND 7 PER IJ&S CONSULTING lN 04/2004 lSP3 ~ . . Q -,\3 V AU\T ~•-. . "is>,_0 "' \\ii "';=(o ' 0) % "'\O: LEGALS ORDER NO.; 1082861 LOT 1 OF SHORT PLAT NUMBER 278113, RECORDED AUGUST 28, 1976 UNDER AUDITORS FILE NUMBER 7808281028, BEING A PORTION OF TRACT 13, NORTHWESTERN GARDEN TRACTS, DIVISION NO. 5, ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OTHER PROPERTY 90, IN KING COUNTY, WASHINGTON. SEE EXCEPTION ON PLAT SITE PLAN. TOGETHER WITH AN EASEMENT FOR ROADWAY AND UTILITIES PURPOSES -OVER THE EAST 30 FEET OF LOT 2 OF SAID SHORT PLAT NUMBER 278113. AND TOGETHER WITH AN EASEMENT FOR ROADWAY AND UTILITY PURPOSES OVER THE EAST 30 FEET OF THE SOUTH 300 FEET OF TRACT 12, NORTHWESTERN GARDEN TRACTS, DIVISION NO. 5, ACCORDING TO THE PLAT THEREOF. RECORDED IN VOLUME 47 OF PLATS, PAGE 90, IN KING COUNTY, WASHINGTON. ORDER NO.: 1121061 THAT PORTION OF LOT 12, NORTHWESTERN GARDEN TRACTS DIVISION NO. 5. ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OF PLATS. PAGE 90. IN KING COUNTY, WASHINTON: EXCEPT THE FOLLOWING DESCRIBED PROPERTY: BEGINNING AT THE SOUTHWEST CORNER: THENCE NORTHERLY ALONG THE )/ESTERLY LINE 300 FT.; THENCE EASTERLY PARALLEL WITH THE SOUTH LINE OF SAID LOT 135 FT.; THENCE SOUTH PARALLEL WITH THE WEST LINE OF SAID LOT, 300 FT.; THENCE WESTERLY ALONG THE SOUTH LINE OF SAID STREET TO THE POINT OF BEGINNING. SEE EXCEPTION ON PLAT SITE PLAN. ORDER NO.; 1125307 LOT 2, KING COUNTY SHORT PLAT NUMBER 338021. AS RECORDED KING COUNTY RECORDING NUMBER 8902210370; UNDER BEING A PORTION OF TRACT 11, NORTHWESTERN GARDEN TRACTS DIVIDSION NO. 5. ACCORDING TO THE PLAT THEREOF, RECORDED IN VOLUME 47 OF PLATS, PAGE 90. IN KING COUNTY, WASHINGTON. LEGALS PROVIDED BY, CHICAGO TITLE INSURANCE COMPANY. E1=374.69 X 't' GS E1=373.71 X ..-GS E1=374.01 X GS ~ 0 0 C\J . -s--1 •• C\J i:£1 E--< z <r: <r i=i ~ l:t: µ:J "" "" :::, o:i ~ (/] Q Sj izi E'-< -1'.::::1 :> e- µ:i -l:t: ~ " E'-< ? ..,: " Q '° 0 . . 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P1A3 •\ / ', I I~ 7 / '., I A6' \ \ \ 5PI I 7=---_------ 1 ·--- ,· -, ;: 1-~ ,.'• ,--" ' \ \ - ' \ \ I \ \ \ ,• ' ' --·1 y ', \ ' __ ...... -1. ....... --,. /0 ' ----·\ ' '. ,_ ' ' . ' ,, . . :··' ' .' '1_ ,, \ ' ' ~r t-\ ::J ' \ \ I \ ' ' ' ' ' ' -\ ) i ' A? ' ' ' \ \ ·,. ' \ \ l. '. I • \ \ ' ' \ \ ', \ '-.. -· " -522-·-~-----\ ' .. _- \ ·--····--------· ._. ... -.. ____ ,, ____ ·-···" ...... -. ----.. _ """'"'" . ,·-' -----" , ........ _, .. : -·-- ----·--·-----------·-------s. E:--· 192NtJ sr--·-·--·--··-----·-··--·----·-------·--- ------ .... . -"""·-·---·· ·····-·''"~---- ' ' ·---... ,. ' ...... _ ' ---" . ' ~--, v;, ' C,RAPHIC SCALE ( IN FEET ) 1 inch = 40 ft. i ' • ~----~ -~-- ···--·"""" ··---------····-··· -----.--- . ' ,--,· ... --·-· . ,. ...... ,_. --·-; -, __ . ··" . . ·. ,.-. ' ' CONSTRUCTION NOTES: 0 ASPHALT PAVEMENT PER KCRS DWG. NO. 1-002 0 ASPHALT PAVEMENT PER KCRS DWG. NO. 1-003 0 CONCRETE CURB ANO GUTTER PER KCRS DWG. NO. 3-002 0 CONCRETE VERTICAL CURB AND SIDEWALi( PER KCRS DWG. NO. 3-001 0 CONCRETE ROLLED CURB PER KCRS DWG. NO. 3-002 0 CONCRETE ROLLED CURB AND SIDEWALK PER KCRS OWG. NO. 3-001 0 EXffiUDED CONCRETE CURB PER KCRS DWG. NO. 3-002 CALL BEFORE YOU DIG 1-800-424-5555 FOR FIELD LOCATION OF UNDERGROUND UTILITIES Taylor Engineering Consultants 205 Front St. S. P.O. Box 1787 Issaquah, WA 98027 tel. 425-391-1415 fax 425-391-1551 Project: SOOS CREEK PLAT Developer: C, Shaffer Corporation Mr. Charles Spaeth 6839 Ravenna Avenue NE Seattle, WA 98115 Job Data: /EC .Joh #: 294 ,ma • Designed: WNT Dro,vn• RP Checked• LMT Authorized Use: This drawing is iSsued for use in the titled project only. It shall not be used for any other purpose without the express authorization and/or adaptation by TtC. Permit Agency: KING COUNTY APPllt VJ-{ fc,Oo'l EXPIRES s11010• I Issued for: PREUMINARY 9/15/04 Rev. Date Sheet Title: PRELIMINARY LOT LAYOUT Sheet No: 2 E ~ (.) 1 g ,n 0 - _, __ , ' ·, ' ,, _·. 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"' ---~·- ---------·--·------·· ---,-~>-•·' .-------- .. ;_·; N ' ,, ' ,. ;; ' . ,: ,, .. ·-·' I ' ', ·----~ --------- ...... -._ ,-' ', ' ~-', ... -' . -~--::•. ' ' ' . INTERSECTION AL TERNA TE 1 ------- INTERNAL PLAT ROAD IMPROVEMENTS PLAN GRAPHIC SCALE SCALE: 1 "=40' it. ,_; " ' ' . -· -.--, I I ,,Kc,, I ._, • I - I ' I I • • • - ' ' I \. ' ' --- 1 \ - \ ·. • \ ' I!) 3 ' ·1v···.· ' \ . ;~ ,'ff ( ..•. ,. ' 1 4 r---1','".;II 1;'[ i · ... ; , I /~r i; )\":'t I I I I l \ ' --., 1 I \ A1 .3 I \ I \ \\ \ ' . ' \ \ \ ' \ \ ;\ ' r) r·\ I L \ \ :\ 1 • ' \ \ \ ' \ \ \ ' I ); ' ' \ ,___ , ' ,, ,, -' ., .. ' . ···--·-··----····-·-.. '' .. ' -,, -,., .. '\. :\. \ A 1 ·1 i \ ' \ c F' 1 ~) !. - \ ' \ \ ' ; '· ' \ ' \ \ \\ . ' -'~ ' ,-,-.-, h .... ; ,, · .. ,.,:1-:; _('. -· .. ; \ ', ' ' \-··C\ . ,\.) \ ' (---~ i,/ -7 t'.--- --7 £.- ,-·'(\ ' ' ----·-\ ---r1 /1 .... __ , _,_. ., ' ., ;-·'" ', .. ) ' "". ---,,- . ·-- . ' ' \ j .. • , -.r-.. _.-----· I ' 5 0.5' ff~~ . g:~ ;'':. A A 2 ' _::t{f ;;::·-.-__ · _-' ~~Jj'i~/~ , ., s·-,· 'rs·· . ,:j(i] r_,.,.~ ---_, .• ·-, i Y"',/ ..•.• 10J~, . % \ (-.,-.--';.,_ ,.- "' i~·' ·2, 5 -·.' .,:o:. ·, I I ·., } /\A I \ ----,-', ~ f\9 \ • $Pl \ ' \ ' ' \ ' \ \ ' \ ' \ , I . -I ' '·- ' • • ' • / • - ' ' ; • ' ' ' \ \ ' ' ' \ \ \ \ /\5 \ ' ; ' ' \ '· \ \ ---- \ ' \ ' ' \ \ ' ; \ \ \ I A7 \ , .<· ' / 1 ,/\ 1 -=-SE ?_'-,-,, ~·· .., ' ,·; \ \. . • ., -·-·.'·-·sc. "-•••· '-.j ; " j-'-,-;,· ., ---··-- • •" '.\ • •I . ,·, ' ----~ ·, ,\ -------~ ·c-\ CALL BEFORE YOU DIG 1 -800-424-5555 FOR FIELD LOCATION OF UNDERGROUND UTILITIES ', -" ... l,.·)' -' .. '.--.'(_.-. ______ , '--· ·- ' "f" \ \ CONSTRUCTION NOTES: CD ASPHALT PAVEMENT PER KCRS DWG, NO. 1-002 0 ASPHALT PAVEMENT PER KCRS DWG. NO. 1-003 0 CONCRETE CURB AND GUTTER PER KCRS DWG. NO. 3-002 8 CONCRETE VERTICAL CURB AND SIDEWALK PER KCRS DWG. NO. 3-001 0 CONCRETE ROLLED CURB PER KCRS DWG. NO. 3-002 © CONCRETE ROLLED CURB AND SIDEWALK PER KCRS DWG. NO. 3-001 0 EXTRUDED CONCRETE CURB PER KCRS DWG. NO. 3-002 ' . ' ' " -·--C- --1-' r -, L -'- Taylor Engineering Consultants 205 F rant St. S. P.O. Box 1787 Issaquah, WA 98027 tel. 425-391-1415 fax 4?5-391-1551 \ AA} \ --\ h \·'c>.J ·, Project: "· , .. \ _\ SOOS CREEK .·_- •:;~ ·;.· ' ' .. ------- ' ; ' e ' •.•, -----.--------' -, .. -.. -.---c-. "' • -· ;e,· _ _.. i ' -·. ,:-_. '>--~-,-~--··-----.. _ _,. .. \ . ·,·. ·. ';···· .. ' ·" ' .--·'·· -.~· ",.,, . \\ PLAT '·,. f~·~1\ ,, SP1 / /' Developer: C. Shaffer Corporation Mr. Charles Spaeth 6839 Ravenna Avenue NE Seattle, WA 98115 . ' ; •i--~-~---,--/\ I Job Data: ----+~--~~- . ,'' ! ·\ ' .. ' ·, _,. ·' ' ; .· . :.), /.· . :·, '. ' ;· ' '' '' ' . - ~I 'i ' .•. '"' ·1 :-; VJ :-. . . . T[C Joh#• De signer)! Drawn: Checked 294-jmo WNT RP LMT ---l=======l Authorized Use: This drawing is issued for use in the titled project only. It shall no/ be used for any other purpose without the express authorization and/or adaptation by T[C. Permit Agency: KING COUNTY ALTERNATE 2 INTESECTION PLAN ,O.PP ~ L64Pc,ot/l. SCALE: 1"=40' '. i ; -:: •· ,, _ .. __ - . ---.;, .. _,;1·, ·-·- ,:·:_.· <l'-' ' ' ---.. ·, ,J· ' ,· . ·._ \ , ----..... " --- ------- ,-"...,_[_;-:_.·~· . . ... -·---,-----------·-'µ. . . . . ·-----'".l. ... ,; __ -------- / I .-., .--.. .. /' I ; , - -l ,·f' -, -., ' '' " ,._ ·. !· / _::,J· .. _ / I . :. ', , . } f,', ·.~ ; t.•·•. ,• ·; ·. ,t. I . '-; \''~. I ·-·.--- I,,, '•; '-, ', .. ' ·~·.,c··,1· ~- ·-·--· ·C . _,-... . I.· .,· ' _,I' , . .. ,;, ·, -,. ,,. . I ' I """' ---.. ,_ .... -.. ;.,. ' _,,,_ ._.· ' ' -.,. -----. ·' .. ·o:-··:').· ·' --:> .... -__ ...... - ~/ . . r0. .. • ./ 'i VJ . ----- ' ,' ,,. ... ' I \ I I 17 ( 1\6\ \ \ \ \ I · .... \··.·~ ' ' .. ' EXPIRES 6/10/05 Issued for: PRELIMINARY 9/15/04 Rev. Dote ~-----------·- SP1 NEW ROAD OCCUPYING SAME AREA A~ EXISTING ROAD . ,,_ __ _ /-- -- . ' . ' ' ,, '·-·:·. _l, ,_, •• -:--·1, --,. --· _, ·-t' "--,. -_}----· ...... -.-· ... · ... if,,:. ' . ';:_._, .-,, ·_r, ,. -.. '. i .i ._ • ,< .--. ' .. ; . . ' Sheet Title: PRELIMINARY INTERNAL PLAT ROAD IMPROVEMENTS PLAN Sheet No: ALTERNATE 3 INTESECTION PLAN 3 SCALE: 1"=40' Sheet of I· I . I • "-r iii ,--, ,_,' 'c--. ;, ·.- ' '. .' i ,., .,-. ' !)5 :/ ' ( ' ' / rl4 I fV fi.'TLAND "/)" 26 , I D3 j 998 S'Q F'E'E'7' Ir ;-_,-- I I I I, I . D2 / U 1 25 24 22 LFB' SD @ 0.367/t/ft ' 23cs TYPE 1 RIM 471.07. IE 468.07 ' ' ! I ' . ! \ I . ;:,>_::; .' .. --,-., -. -·· ' ;· > t. -·: ! ":" 22LF 8". so· ·' · .. ·. ·. .. @ 0.3l0ft/ft -1 I > '' !.lill ~..,; 21 i '. I '" CB TYPE 1 · . RIM 470.35 ! · .. · .. 1 ... , IE 467.35 '. r,---------~--.. ! .· ·•. jl), \ ! ;: . . I 20 ~/-. __ .,.,_·_. 27 : I ',""-a, .;, --il i j _i, -I"" ·. ' ' -, .I~·--· ·"-:· ;\ .. ,. ·, r-.• ' I 28/ f . . '"' "';':· I \ ; ' 1 , ' ' j \ .. • 1 .1 ' , ....... , ·f-: 15 16 ' ' ' ' ' _ j .. ',. , .. \_'., -, ,.. . " " . . -·--. --<. '·. . ; " -, ' ' . ; :_ .. : . ·-' ·' i· ' ' ,> : 30, ' .. ,_ ' ' ' ' ~-,, .. , .' .-,, \ I 34 I' ', ·++- ' ' " ,_ ! ',/. . ' ,_,,,_... ,, ., ' ' . ' 33 JE 405.54 (IN . 35 ' .-' --... -: } ··~~SD ' @ 0.005ft/lt '' , CB .TYPE: 1 37 . . RIM ' 399.~0 . IE 396.90 ii r , : __ i ,. . i • ' ' :rn+Lc::F'"".::;s··· -=so=---~-- . 0.195ft/f! ~B TYPE 1 38 IM 403.62 ' . •• ' L ' ' If 400.62 ' . ' . i 1 .1+,fH+---'.~. ~-~. -~- V3 LF 12' SD · I . '\I' 0.005ft/ft ' ' ' \ 1, ' ~~~~R~- j IE 405.44 (OUT) ' _m'.g~·i.···, ~~J; RIM 404.66 i I -~-,-··, , .. '··.;,---- ' ( I I I I I 93 ' ' I .: i I I I I I . '.· I \ I I ' .-- J I f i' I I ) ' ' ' • . ·, . j \ I ' I I ( ·A 17 \ \ :f~i": :Jf · :1,· '(\ · .. \ -' - \ ; I ',' 'I I >I .,·• '1· ' I . .. i I \ I ; I i I \ ' , I I :-\ \ \ \ I \ \ \ ' \ \ . 1 I ' ,., \ ,.·, \ 998 1 1 , I \ _· __ \ ; ----· / \ 999 -.. _ I ,-~\ ' ';;-~:--·, CB T'tRE 1 RIM 378;91 ' ' ... " . ·-··---"' \ \· '. ,_.;:, ' ' I \ .. j \ ' •• \ I \ A15 ' . I A 14 C \ \ \ \ I ' \ \ \ ' ' ' ' . . ', " . __ ; , ·-· • v.' \ \ I cp~· ,_~f 1): >' ' • \ "' ·" / I I I I V i:_ .. ,. ' . ·~: : ''. ; : I I '.' ', .-., \ '. ' \ \ \ \ \ \ ._ ; ' I \ \ €) ,-. \ CB TYPE 1 \ I\ 12 •• \ RIM 387.2,0 , IE 384.13 {IN) I IE 384.03 (OUT) \ I I ,._.;·;; \ --CB TYPE 1 ' \ \ .. , ~Rc=IM~3-~78"".9~1 IE 375.91 . '. \ ' ' I \ ' I ·, -, ' I Ai i \ I Ci F' L! _, ' . I ; I ' \ ' ' ' .. ; : C-;·: .. ; ' ,• ' I I \ \ I , \ A.10 \ \ • ' \ \ \ \ ' ', '· \ \ ' I I \ ' ---\ --··('\ /·_; \ V ~--7-- 1---'" f--... -. ---1 ;I .J f ' ' • -1[. 375.84 (IN) IE 375.74 (OUT) I \ \ ,., '\, {', .' I ' ' --i j -···-- ·-·---;-""·-'". -----' '-/ I , ' . ; I ' ,.,-)-.. '.: .-·-. --···· ; _::;. . ' ' . ... ,_ " . ,.. .... " / ' __ ,.' •.'. ,. ·--·_, i'--- .. , .. , .. ·-··:··: ..• ---·-------- ' ' . ,,-__ ~---.··---~-- ·-~. '• . ; ·- ; \ ' I I I I 1 < -:-. . , 19 ("· . -! . / 17 - . ' · . ' ' -.. _ ' , .. -·---.-·· . ·--.. ---- ! I I I I I I I \/ ' ·-----~--- • ••• e' - .. · .. ---.. --~-~--------~---- ' -.. ·- •• ---< .. ' ' -- . -'; .... , RECORDED LINE • ' I PRESUMED UNE ', -'" ,:>. ., -I j I ' • ' " ! ' ,, .. , ; r l ·. I I I " , I i i i . ; ! __ , -..,,_. • ·,·._'/ . .-.~· . /;- . -_ ·.---\' _'., ,' _., ·._:[ .. Y' ,,-·". Ii ., ... ..._ ' ' \ ' '··3'' ' ' " --, ' .. ' ... -.::·. ,.'..'. ' . . \ '· .-, . (I---+ -,·-:;,~-- ' ..... , _ _,_ -,. :.,~_-:.-'--~" -· .":J ·-,, __ c:'·:' -; --~--.· ; . -· .. ,. .. ;_ ... \ " . ' ; -·--. " I ;· I , .. ···• ·' ' ' i ,-.,--,,., ~---'·' .------ " ---. -, .. , ' '' ,; ·-i, . -- .. ., ·- .. ---------' --- I ·' ; .: _-; •. _; I I r •, . -, .. ; : . ' ··-· . ._, -'. ·:~ ,; . ._" -. ·-. ·--- . -' . ' .,. -· ; 'c, , ••• J • - j . ._., .• .-,,.. ••A•"••.}••• ·+ ''"('""''' "'-'-_, ..... ,,\·--·-e.-'- '. ', ·.-t... ., ---.-· --' ., , ----. ··-., ..... .! . " ... -------_, ""-· .,. ·---,--.,. -__ J ___ -..... "J ----~ -... ..,;.___ ........ -.. ,'. ---. . -· . " ... 'v '""'"if_\'\::. -·. ='t\: ..... , .... --·----·--·' ' ..... '·--.. ~. , ___ "; .. _,;-, " . ----: .. -~.,. ... , ..... -~. -·--·-:,:r·;-. ·--::-.. .. -. --- N GRADING AND DRAINAGE PLAN SCALE: 1 "= 40' '.' ! j ' Z-}/!/ ::.:. ," • •• s ·,, ' ': ·\ .-__ ,• -',. I. . . ~ :: ;(;,f i; I ' ., "tµ,:i, ' . ' ' --· . '' ' . ' " . ,' .. , ''~_: _i~{ .,. t· ' i -. ! / . '•_ ) : ,_. .. I · ,~t ·c· ' ., .. _, I '---·. ,·j . .,,, '" I ( . " • ' ''!" .:_< "; C ,,'. .-, -, ;·-·; • "' :, ... -:,-_.:..,, .:, ·- \ _:--.: \ \ . I \I I · AA4( . I '/\!\3 I \ \ AB \ ' ' ···\ \ ~ ; .-i \ \ \ ··-.-...... ···------·---... , .. CB TYPE 1 ' RIM 381.3.4 IE 378.27 (IN) IE 378.17 (OUT) -' t1· · ._, .,, .-\ ,·. ,, ·.. CB TYPE 1 \ -.RIM 381.34 IE 378.34 ' ' \ ' ' \,,,,,:.,,, • ' . I f' ,-,, .. ,, . ', / , ',,;;:; ,·'. ·, , '·<··-·, -~ -s • ' ' '/: ; ·' :· ·- -- •._ \ 1\./111 $P1 \ ' y A ,. . L I . ·, ' • t .A~J . \ '. ' ' 1 '\ ' ' ' ' \ ~ I z-C11~,1::1·., . ..····· .. \ · .,J ·,,,!'CJ , .\\ ' ' . •,, '-.'-\ .,. • ,•-• ._.:-,,._ ._ -•' M's -----•••"•• ' 'f ' ' -.. , -,· . - -···--· ~-. }i::.: . \ ·.-~:--~:·~:'. . .. , -·-· ----· ........ .j.. ' ., -r •-,,<"" '•• • """-""•· ·•~ '• .. ,' ' c, ' ... -.. ·----.. ---"-............ ., ... _ ' .,. ·< _; ~' -, ---,. ' ' _,.,. ' .. ·_, '··,J ·,<, GRAPHIC SCALE ( IN FEET ) 1 b1ch = 40 ft. ' ' ,,,.,._ .,! -<,-c.:-·: : \ . , ' ' . -'-----'c-'--·--·------ • ,. ......... ~-"·" ,~--· ...... , •• ,.. -·-·····-· '" ••• ··-<, -·· --. " --"'' ·--i, ,' ' \ \ ' ' \ ' \ I \ \ ' ' \ \ \ .•.: _:---; -· ' -,-..... ,,., • i '\ '' ,1· . ' -, ---"-~· ---- CONSTRUCTION NOTES: 8 ASPHALT PAVEMENT PER KCRS DWG. NO. 1-002 0 ASPHALT PAVEMENT PER KCRS DWG. NO. 1-003 0 CONCRETE CURB AND GUTTER PER KCRS DWG. NO. 3-002 8 CONCRETE VERTICAL CURB ANO SIDEWALK PER KCRS DWG. NO. 3-001 0 CONCRETE ROLLED CURB PER KCRS DWG. NO. 3-002 0 CONCRETE ROLLED CURB AND SIDEWALK PER KCRS DWG. NO. 3-001 0 EXTRUDED CONCRETE CURB PER KCRS DWG. NO. 3-002 CALL BEFORE YOU DIG 1-800-424-5555 FOR FIELD LOCATION OF UNDERGROUND UTILITIES Taylor Engineering Consultants 205 Front St. S. P.O. Box 1787 Issaquah, WA 98027 tel. 425-391-1415 fox 425-391-1551 Project: SOOS CREEK PLAT Developer: C. Shaffer Corporation Mr. Charles Spaeth 6839 Ravenna Avenue NE Seattle, WA 98115 Job Data: T£C Joh#• 294-ima D~a···n· . ,r • Checked• WNT RP LMT Authorized Use: • This drawing is issued for use in the titled project only ft shall not be used for any other purpose without /he express aulharizalion and/or adaptation by /EC. Permit Agency: KING COUNTY APP i 1-0"1ro,;,c.'L EXPIRES 6/10/05 Issued for: PRELIMINARY 9/15/04 Rev. Date ------- ------------- Sheet Title: PRELIMINARY GRADING AND DRAINAGE PLAN Sheet No: 4 Sheet of ,. ' ' ' C .. -E fl " 0 '3 ~ (j 0 ITT 0 a. :r: " -._T i I • €) . ·_.-I • • I . I I . I 11 --------~-- ·-. ·-.. • •• i \ I. ! • I ' I; -. + . 11.~ -------""-------'-----1.J I i .• ' I I .. I . . . .• i I · I . .• . • .• . .•• II 11 ·-1 . -I I · ·.· ·. : 11 '"-,::.·-::t . _._',·,:ii I I .•... ·. I I : ·._ I ---~---· ,' ' . . . -. ' .. \. ·' . -" .. :. -·. I .. I . I I I I I I I I I I ; I I 1 '1-----c-~~----,----~-------!l.di • I ! . b. I .. :--··., __ <-·· I. i " ' ·,·- _, " I ; l ·• I L --\,-~------------. \ I\ I \ I \ I \ I I I I I I I I I I I I I I \ I I \ \ \ I I I I I I ! I I I • I I I I I I \ I \ I . I I I • I ' I I I I I I I \ I I .--·· • I \ \ I \ I • I 'PIPE OUTL T IE 382.00 1 ' . \ ---.------ ··--------- \ I \ I I / . ' . _:, ... ' EMERGENCY OVERFLOW WEIR ' • . ' / . .. .. - \ ( . .. _., ... ,, ,} • • ' >-· \ \ . • I •• 1 << ,.,. ' ' . ' _.._, > ,' < -1 i ! • .,, . ' .. ,: .. -.... .. , ', . ,' .,_ ' ','"' ·:· . ·, . . / /. ·_' .. " 0/ ' J " ' . '· . : .. ';,. ··~~\. . . ·'. :\-' ··· .. •·, \ ...... ' --· . '" ·-, ·1 <:1 \ '•\ ,. . ' -·- _.c..C!-.'., •. , . ----. ~-~,, ·.,-_.(- ".': . _, _.-·. . ' . i ' : C '_. ' '', .-• " • . ' . ·,-'.· .. ' -· -... , " ./ . . ·. ' .. ,. .... ' . CB TYRE 2~48" ·,· ..... WITH BIRD. CAGE f~~~W::~ RIM 3.87. 0 :_"/ /, J "" IE 382.90 {IN) . -" IE 3136.00 (OUT) PIPE. INLET ilE 383.00 ' ' . ' ·-r-· 0 • o I ~! ,.., "'' I '::i I Li] I ~/ C) • a. I t!5 I &l "" I J ·- ' .• ,..i;:_. ... . "' .. ~ ·-'".:-.·-:~· ···-· ~="@. -· ---'· --,.___________. . .. ·_··.·. & 1.) ,-,\ ;J -· .4;,.-- . ,\ g/--_ <ril ro , .. l il'.i1 •. ,_J_. d .:at I \ ,=. HC"""---- EMEhGENCY OVERFLOW WEIR 152 LF 12" SD @ 0.00-51\/ft', ' . \'. ... >< 35 LF 48" ¢ INFILTRATION TANK \ .,. -·--\ 10 LF 12" SD @ 0.029ft/f\ CB TYPE 1 RIM 378.91 IE 375.84 (IN) IE 375.74 (OUT) I I L I I .I ·---···----~----" -··· I I '' ·- I I . ' . . . ' ·, \(-~c......,;....----------',· :.1: \ BERM ELEV. 385. 00 .· I ' ··,"' cc-----'--------~--;;i,! J \ .1· \ \ \ \ \ \ \ • \ I 1_·~·-1 PIPE OUTLET IE 3.82.83 ·------- --·~··--- 10 LF 12" SD @ 0.01 ~ft/ft _____ / -1 / I I I I r ' Cl. . • r .l I \ --,,. CB TIPE 2-48" RIM 387.00 IE 383.01 (IN) IE 382.91 (OUT) ·",, y 'j h ' • l • ------; ____ ,;_~~----------·-·" .. ---- . INFIL TAA TION AND TAEA TMENT PLAN SCALE: 1 "= 20' ' I I I· I I I I I I I I . _:.~ \ \. . . . . \ . ... -, ; \ \ \ • \ / . --,. . . • ·-. . < ;1··.' .. .,._ . . ,-._-:- . ' . ·. '' ' . ';"; p · 1·,.,·., .• -1 ·• • j/ .. , ,--~--··. b"v ';- I I I I l A15 A ~ Al \ ' .\ ' \ \ " \ . ' \ \ \ I I ' \ I ·\ -_\ I I I I PIPE OUTLET , IE 375.50 _; J . ;_ ' \ :c.:::r-' :,, .:" . ' \ \ ' I ' • \ ' • \ I ' ' \ 3 \ • ' \ \ ' ' t -· "" --.... \ \ \ \ ---------------- \ \ ' \ ' \ \ ' ' ' /\ 1 2 \ \ \ ' •. ' '\ .I I \ \ \ •, ' ' ' ' . --.- . ' \ : •• ', ·, \' \!. ' ' ' ' • ' . \ ' ' ., •• " ' ·-\ ' ' \ ' \ ' ' \ ' <( r--~-, . ' -· >.; \ \ \ • ' ' \ ' ' \ ""' ·' ' .,.-' ,: ) f ·, (: .. -, ·;.::_ .. ' ' . \ \ ' \ \ \ ' \ A, 1 C5: ,~ \['.:::, \ ' • \ \ \ \ • \ ' ·-\ 1 .,.._, ·: •' ,-t • -_.,. "" J ' ' ,' j ,,_ .-. ·'\ .:.. \ ... . ·-; ·: ' . ,·, •'/ ( /" - ' . .. ---. ; \ ... r-,:.~.' .. / ·,,,,-.·· "" 'i _;-' ' ... L .. ,_ .... \ \ ' \ ' \ ':i I I \ I . ' i J\/",._~/1 ' --··· -/ \ \ • o'""> .,.. : :,· 'i .( J: \ ;'•>;"' ./ .. A (j ,J". ' ' ', \ ' .... ~-----~---· I \ ' ' • ' • \ / \ ' \ ' \ \ \ "S, \ C \ • \ \ " \ \ .--· _, --. \ \ \ \ l " /- •· f-(") ---------'--I ---~·-------'---~~--~-~--------'------" GRAPHIC SCALE IN FEET 1 inch ; 20 ft. DRAINAGE NOTES: CALL BEFORE YOU DIG 1-800-424-5555 FOR FIELD LOCATION OF UNDERGROUND UTILITIES Taylor Engineering Consultants 205 Front St. S. P.O. Box 1787 Issaquah, WA 98027 tel. 425-391-1415 fax 425-391-1551 Project: SOOS CREEK PLAT Developer: C. Shaffer Corporation Mr. Charles Spaeth 6839 Ravenna Avenue NE Seattle, WA 98115 Job Data: TE:C Job #• Designed: 294-~na • Dra :vn: Checked' WNT RP LMT Authorized Use: This drawing is issued for use in the titled project only. It shall not be used for on y other purpose without the express authorization and/or adaptation by TE:C. Permit Agency: KING COUNTY A<'P I);-L..o<l {'coo z. EXPIRES 6/10/05 Issued for: PRELIMINARY 9/15/04 Rev. Date ------------ -----------~--- Sheet Title: PRELIMINARY INFILTRATION AND TREA"rMENT PLAN Sheet No: 5 Sheet of C ---6 ~ m ~ !i' ~ ~ ,lj if) "' " $ { E ·c ~ gJ U) en 0 ::i 0 ------~·---------------------------------------------------------------------------------------------------------------------------r-------- ------------·-- _............._ / I I I u \ 1-B" 90' BE;;f n~MJ) f / 1HRUST B~CKING --_.-2 LF 8" DI W / ' .,:. ! ;- I • I ' I ! 1·1 I I I I ' . I I ,,.j "· , ._): , : I I I • Co,, I CONNECT TO EXISTING 8" DI W .-.,. •. ! ---. 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I . 1 ,6" GATE VAlVJ;(FLxM 25 LF 6" DJ 1W < l \ \ . 998 1 1 I I I : 1_7'......,_\ ) --+---· _____ , ({ c: //·:- / .i I:.· --:7.·, \ .. 999 \ \ ' \ \ I Al/ ' I '1 ••. ,., ' . I\ . r , - I I I A15 •• I /\1~· '., \ ~·- \ ' \ \ ' I \ \ \ \ \ c'p ~) ._j '-~ ' \ '· '·--'' '·-.... : l'. ! . '· ,, .: , "'. ' ---· . ,.· ,. ,.. . ' ',' ... ' "-''--· I I I \ ;\ (_:,:' I I ~--· , __ I r1f if:i:-ir .. , I I ; .. ' I I \ .. • I ~.. \ • \ A! 3 I I \ .. '. \ ; \ . . \i'J2: \ SSMH-'A I -RIM_ 377.93 IE 367:93 ' I I . I • I i \ ' : I . \ \ '\ '. \ ' \ \ ' fl 11 c·p' ._) l,j I I • • \ \ \ \ \ .. , ~,, 1/ , .· 40,LF 8" PVS /! I / I \ · .. ·· . \l I c;:.-. -. -.. ,_...... . . . .. \, ------~,_:\I I • I 7: ,·. . \ \ \ \ \ \ \ ' ,· \ \ _;·> . / I I I I -... 'CC -' 20 19 / ) ... ·., --- j'i,: ' .. ' ' .: I ; .; I 1+81 90' BEND (MJ)iWi: .i ,:..:·' I " / '93 f ltiRUST BLOC~IN~ .•. ·. , . ! : , ' . / / ; .:,'. J-8"x6" REDUCER (M}~F,L) • ., · , / RIM .. 468;07 ,1 ·:, .. · .. ·· .. IE408.3fl.; ,;'/·. ',11 /\ '\, IJ IE 458.00 1 /,, ' •. . •• ······.·_tr.·. ~. '::; I \ \ I '--1-'~/8" ;~~i~~~x:JxF UJ-t---: I ... ·,,.,·. ,;1(';}i ) i J ; ii . ! \ i \ _·. .I ; ~ 1_; GATE VALVE (FLxMJ)~--"-/, . . 1"·11·: ·· \. ' 1 ., 1 .. · "'·-·-----/ 25 LF 6" DVW • l--'--'f-/..,· ·+\-'-'-· '---."--~--t-',1'-'c··c-·· -;t-~="?"'-''-'f--1 ; ' ' ·.·If/. /-i1--t~'-+-"''F' "-";e'_;_';_,.\,:;':'::••1...:E.i ~: ···'-' 17 / / ' RECORDED LINE ' . ;, f;';.. F · .. • i. 1 1 Ii \ PRESUMED LINE ,;i? : 1 4?~,tfji_~"J, .. ~-~/ \\~.,,,i ..... ~ --- \ .? \ I '··. \ -. ·, '""'· ------ • ,-........... >;> ' _. './ ·'' • -,t-~ :~·.' ';' . ' . ' -.......... ·. ---. '. i '·~::. ,,~ :,t ~ :. --~::: ' .,...:. 1 -·0., ,q·-, I.~ I ,,_ ,._ ',··, ' . \ \ \ ' \ \ •. .: ' ' -" : '.-' I ,, ·--·r , , • ' <, \ \ \ ·, \. ' -,-~. ' ), .--., : . .--t ,; .\ '. ,· ,· . ', '· ',' ,, ' I \ ~ \\ /\9 '1 1. I \ / I ' I I A8 I 1-.8"x8"x6" TEE (Wi'¥<1fl) W/ THRUST BLOCKING / , 1-:-6' GA TE VAL VE (FLJMJ) \ 1 : FIRE HYDRANT / ' . 18LF6"D1WAA:/3 .\ I 'I I / . ' I I \ \ \ . --·· ·-.' ..--,-1 ' \ . \_. j ____ ,. ,/., \ ' \ 1·,--\ \ I \ // - \ \ \ . ' .. .' ',~ 1-~" CROSS (~L) .· '; A\7; \ :_ : ; '. I . '3· \_ ·,_ ' ,_f.1' • ' ~,: .-,,;_i, _, -0 1;, ... , . ,' _, ' I I Cc·,. ', ' ,)J ,-"•, I ... ____ ...... / / / / I I I I I I ./ I I L ,-._-, . ·' ,. .. .·''\ '.., SSMH-N RIM 429.34 IE 419.34 .· I I I I . ' I I .. , ' '. ',.• .' - :). ! ·/, ',_. •,;, './.:;-· .. l --;-;· /-•'''., .... ~ ' •, .y ' . ' -· :,,,'-:·_ /·. •. ' .. =/ / s,:-:i} --·~· --. . . . . ···'·.'·'· ;< '-.:.. • --' -.-•\, ' ~· ... ·.·.' .·.•. '. ···, ........ \. --~-.·., ' . ; -(--- -':,.,'j)_ ........ >"0"'.s "' ' , ...... , .... _ .... ' ·--'c."·~--····-.--..... ' ·····,· ..... . ·, .. ,, ,;-_; ... , ·. /. . ., ' \ .. : ,·;;"'. .·.· ,, .. '/ ' ' .----··· r > ·,·, ; .:·:i~/t .. . . . . •/' \ \ / \ SSMH-M RIM 408.00± IE 398.00 ~ .. -SSMH-L RIM 382.18' IE 372.18 / / I __ .,..-- c'.C, ('?\ ----; n••c;; o/.144tt,/t.,,;.,1·1:; \1:S \.f B r' . . -. , , ---------I I / -.·· ! 1 1-;s" GATE VAL (FLxMJ) /, f . ' AA? 1 ) A6'.\ I . 'l ::.\ . ,-. ;,,;,f]\;JY' /·... \ ·.. ,., r-. l j3ll _!::.Y' ·. •. . . /\:( .\ -ju ':!,.,~,C. . ·.· . . \ ' ..... ,1' ·, .. //:\ 1:'. r: / ;, '1 ,' I •• . -·· • \ /' ,· \ 'T ',:~ . \ .. \" I ·. ."\\.· I ... ,· ' . ' .• -.1 ' ' "' ' " . . i \ :-t-.11 • "" ', ' '\ .,:·--I '-·. :;._; '. ;,.;'· · .. . ' . '' .:2;~ ._ .. ' .. _ . . . I . ': " ' ,.-' 'f 'Jf I ·./. ,, .' ' SP1 'i" -__ • / . ' A2 ' • • \ ' . \ '· ' \ ' I \ I \ \ \ I • \ \ \ \ \ I \ \·r-\ J', -·.-;/ -·/ \ £-· \ • \ ' I \ ' \;} ' ' ----' \ \ \ _.;....:-/01-l.1-· .:..SB L .. _,4-.. ~~ •, ___ \ r'"\ ' -r, '.'>·; \c, I ---. ! I -I / < '·, : /1 . . -- --I . - . ' -----. ,.,._ ... ) .,. . ._., -- "·•·-"-, . . ;,, . ---, ___ _,...1 /'-- ,' .~ ... -' .J,. .. ' .> ·'\ ,··-' ! I ---. .· . 1-......... ,,_._ .... _ ... ' ......... ._ ·---·<: .... . • ' ' ------.,. ,a.~ , -.-~-;. " ,_., """'"• .-_,, . ._ ___ ......... r ··--• i .: ,,, . . ' '/ 't'i:Y: .· .•· · , , ---. ' ./ i~ -<'•"'" J; ... ' ·=.c.·· . .. . .. .... . . t'; ,,,; ' .. , .. _, '. ,, . ' ------., ....... ·., •I • I • ·-,' ' j l ·.· r -· . ---.:·. \·-{>,~- ' ,\ l \ I \. ~----~--...... ----~---- 0 C' ------·---~-,...--, !_. ' ,",. ' ', ': -,, '-"· _,,' \ . \ ·-··'v ... , ....... ,.-,. ·-··--"" ;.•---·,•• ~ .. , ' , P'· I I .,_,_,.__ ... ., ................. _ ........ "'''· ,_ '.'.-'-.. \ ,,~.'-' ,_- -,.J ~-~---------~-~~-------~~~-----·-·---~---··------------. -· .,., { , .. -· .... WATER AND SANITARY SEWER MAIN EXTENSION PLAN GRAPHIC SCALE SCALE: 1"=40' ( IN FEET ) 1 inch = 40 ft. .. •' --=·-~·-•. ·-----~ ~---- CALL BEFORE YOU DIG 1-800-424-5555 FOR FIELD LOCATION OF UNDERGROUND UTILITIES Taylor Engineering Consultants 205 Front St. S. P.O. Box 1787 Issaquah, WA 98027 tel. 425-391-1415 fax 4?5-391-1551 Project: SOOS CREEK PLAT Developer: C. Shaffer Corporation Mr. Charles Spaeth 6839 Ravenna Avenue NE Seattle, WA 98115 Job Data: T[C Joh #• Designed: 294-ima IJra wn: Checked WNT RP LMT Authorized Use: • This drawing is issued for use in the titled project only. II shall not be used for any other purpose without the express authorization and/or odaptolian by TEC. Permit Agency: KING COUNTY AP?* (.ol.J jiu 001. EXPlRES 6/10/05 Issued for: PRELIMINARY 9/15/04 Rev. Date Sheet Title: PRELIMINARY WATER AND SAN. SEWER MAIN EXTENSION PLAN Sheet No: 6 Sheet of n. I = c, "' •J- ' ,.,( 1 i I ' ' I -~ ~ '-:!) sf D !al' -~j- ·----------------· . --------------------------------. ----------------------------------------------ss. ·-----·--------------------------------------- PVI STA = 13+15.95 PVI ELEV = 468. 00 A.D. = -6.52 K = 10.74 70' vc "' "' g + "' - U) "' --"' "' N + oi N -<O .... in .. ~ w Ll w > ~ ~,~q. (D -r . 0 · Oo -· 00 q .! <O a) ~ .,,. "' :,; :,; .,_ "'-w VlO:- ' :c . I . :c oi . (/) 40 ~F 8" P\IC ss ~ 0.020ft/ft . ' ' J u:, :,; w ,xi <D si-~ I :5+00 0, '" co • st-lo :,; ..,. -w "' - .,,. r-") r-~ -+ ! ' g ~ HiGH POINT ELEV = 471.68 HIGH POINT STA = 11+69.32 PVI STA = 12+01.15 PVI ELEV = 4 72. 00 A.D. = -4.26 K = 23.49 100' vc ~ ~-:frs ~ . : 0. i r ; 161 lF 8" P'VC SS @ 0.020ft/ft: I . ' l I i ; l "" w •J-"' . ,-, .. 'T ~ 12+00 ..,. -,.._ ..,. ' i J J • J i I 1 g • -~ . ,,-· •' -. -----... ---------·-·------ PVI STA = 10+90 PVI ELEV = 471.14 A.D. = -17.39 K = 6.90 120' VG . . . r . ·-, - . . -,..~~-. . ' . "" ' . . 0 @ 0.026ft ;ft ' w ~- (D l 94 LF 8" PVC SS @ 0.084/t/ft i ' j ' • ' i ' ! . . . . -, ' ' ! j i l j . ' ' . i 62 LF 8" PVC :ss ! ' ' @ 0.195ft/ft: ' . • • . • • • 1 o, ;;: •n "' •J· 0, ..,. -"' ,..._ ,.._ 0 O> C() ,.,.; c, ~ r··-~ c--(0 w w 'T ~ c,j· ~ ..,. ..,. .... 11 +00 10+00 1 J 56 LF. 8" PVG ss @ \l191ft/ft ' co "' "' ,n <O '" 'T ~ 9+UO . ·, ! ~ ~ ..... z ::, -0 -~~ -. "V LO W...f~~O ~"'. ·+ _ _,_..--...-co ~ N N . ~ V ~ +• ID-wwv, .,..,,..,,,.. ·0 .-,, ..,._ --> w GO I<) .. a, ~ PVI STA = 7+50 'PVi.ElEV .. 409.39. A.O. = 13.16 K = 8.36 ·110' VG . "' en + <D -BILF" 5. % . a, 0v . . ~ . . . . 048ft ft L30 LF 8" !SD .. '@ 0.073/t/it . 141 [F 8" PVC SS @ 0.163ft/ft i . . . . . , • . . . . . . J . . . . . . . . t -+ '° * '° ,~ ,-,., o:i ~ 0, ,., -scJ· ., ;;: 8+00 ~, ~ "' . -..,. -..,. 64 LF 8" PVC SS @ 0.208ft ft ~, -0, ,n ~ 0 _, 7+00 ----------------------·---------------------------·--·---- 124TH AVE SE PROFILE SCALE: HOR. 1 "=40' VER. 1'=10' PVI STA = 6+22.13 . . Pv1 Elt\/ . '403.00 . :A.D. = -9.00 K = 10.00 90' vc "' 0 -• ,-..: ,-... ,.._ (D ·+· -~ I "' (/') w ~ ~ CD Ill '. ; __ ,._ . . . . . . . . . . . ' . ' 230 L'; 8" PVC SS @ 0.08~ft/ft ~ .... 0 Ch ,--- "' ~, "' ,., ~ "' ~ ~-"' o, lf) w ,,, :,i '" ,,, ,,, 6+00 N GRAPHIC SCALE 0 -+ "' ~ co ,..., 5+00 ----------------.. -------- LOW POINT ELEV·= 379.15 ·LOW POIN·T ·STA· : 4+03.50 PVI STA = 4+50 PVI ELEV = 378.90 A.D = 14:51 K = 6.89 '100' VC- p ~::, ;,; 0 ~~ --0, v .... .-,. "-' ~ CD .r-. 0,"' ~ l() I.{) • <( ,-..: 0, ,-... ,-... . :i: ,..._ . :,a «) "' ,.., :;; el -w w . ::,; ::,; «) "' --~ -w 0:: - B,0 DI W ,n ;::: o, g , .. I•") "' 0 "' 0 -+ 0, .... ,.._ "' in w. ·o 0 > co > co .,,. "' -o, 0, ,. :;:; s·, 4+00 ... ------------ :-0.51%, .... Ll) :;;: o, R ,._ ,.., "' ' ------------------- "' "' <D <O -Ch 0 + ,-... "' I<) II II > ·< . ~. . . . . . ..... w V, > > D.. D.. -1.16% ---.. -' ·-., • •• t· 264 L " SD @ 0.009ft ft . '. " ..... "' C· 0 1·-. ;;/; (D 0-J a, u ~ 0 d "' c--:;:; '° C0 ~ ~, ,,, 00 "' -00 • I-- I 00 w w ~ w z -...J I ~ ~ 3+00 2+00 --------------· --------- CALL BEFORE YOU DIG 1-800-424-5555 FOR FIELD LOCATION OF UNDERGROUND UTILITIES Taylor Engineering Consultants 205 Front St. S. P.O. Box 1787 Issaquah, WA 98027 . tel. 425-391-1415 fox 425-391-1551 Project: SOOS CREEK PLAT Developer: C. Shaffer Corporation Mr. Charles Spaeth 6839 Ravenna Avenue NE Seattle, WA 98115 Job Data: T[{ Joh#: JJesignec/1 !Jra wn: Checked: 294-ima • WNT RP LMT Authorized Use: This drawing is issued for use in the titled project only. II shall not be used for any other purpose without the express authorization and/or adaptation by T[C'. Permit Agency: KING COUNTY f,,.FP ~ L.ol/ Pooo'J,. [ EXPIRES 6/10/05 Issued for: PRELIMINARY 9/15/04 Rev. Dote Sheet Title: PRELIMINARY ROAD AND UTILITIES PROFILES Sheet No: 7 Sheet of '. ' ,._ ""' • t--I Cl) w w Cl) ........ w z -_J I ~ ~ ----------------- • • f'Vl STA = 1+00 PVI ELEV = 382.00 -A.D. = 7.22 . K = 11.08 . iio' vc· --+------_.L. ____ ,_ · 480 : 460 : 440 : 420 : 400 i 380 i : DATUM ELE'V ---;-----+------+------+---------i 365.00 ,--;;!; -+ ~ 0 ~ '~ g ,-. 01 Q) ID ro <XJ "' 1·•, ,., '" ro "' "' I') 2+00 1+00 o+oo ----~-__ ,, ______ . ----------------····----. -------------~ 124TH AVE SE PROFILE SCALE: HOR. 1 "=40' VER. 1"=10' -------~-------. ------------·1 f)ATUM ELE 380.00 ----_B" DI W : · ... ,, ' ' . 93 LF 12 SD @ 0.005ft ft • i • I 156 LFI 8" PVC SS :@ 0.019ft/ft I o+oo I i 00 ' =tJl::::j: ; ' • j • I ' • r . . . I I . ' ' -! 10 I') .,,. .o -a, 0 · o, v) 0, ,.,.) ~ r,') ~-------. -----. ------------------------------------~ N CUL -DE-SAC PROFILE SCALE: HOR. 1"=40' VER. 1"=10' GRAPHIC SCALE ( IN FEET } 1 inch = 40 ft. r--------------- 1 I 56 LF·s· SD·. @ 0.016ft/ft: I PVI STA = 0+ 76.57 PVI ELEV = 406.00 A.D. = 10.75 K = 9.31 100' vc ._,., ____ ' ' . -. i . . ' . ' . I . I i • I • ' 168 LF a· rvc ss @ o.12a1t/tt 1 ! I i L() co CD "' "' -"' 00 -o, "' co ~ ~ ~ ;;: 0 ';i' .,. ., I +00 ----------------- r--- "' • <O • • • C':-,1 + 0 <n ~ co S CUL -DE-SAC PROFILE SCALE: HOR. 1 "=40' VER. 1"=10' 0 "' "' O' .,,. .. w u > !D : 420 0.39, ; 400 ! f)A'l'l!M ELEV ' ' 380.00 .,,. u, •7' ~, u+oo CALL BEFORE YOU DIG 1-800-424-5555 FOR FIELD LOCATION OF UNDERGROUND UTILITIES Taylor Engineering Consultants 205 Front St. S. P.O. Box 1787 Issaquah, WA 98027 tel. 425-391-1415 fox 425-391-1551 Project: SOOS CREEK PLAT Developer: C. Shaffer Corporation Mr. Charles Spaeth 6839 Ravenna Avenue NE Seattle, WA 98115 Job Data: T[C Jo.0 #, JJesigfJec/1 l!rawn: 294-jma WNT RP LMT Authorized Use: This drawing is issued for use in the titled project only. It shall not be used for any other purpose without the express authorization and/or adaptation by TEC Permit Agency: KING COUN'IY f\PPisr 1..0'-l l"ooot EXP1RES 6/10/05 Issued for: PRELIMINARY 9 /15/04 Rev. Date Sheet Title: PRELIMINARY ROAD AND UTILITTES PROFILES Sheet No: 8 Sheet of