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C_ERC_Determination_Agency_Letter_180824.pdf
Enclosure cc: King County Wastewater Treatment Division Ramin Pazooki, WSDOT, NW Region Boyd Powers, Department of Natural Resources Larry Fisher, WDFW Karen Walter, Fisheries, Muckleshoot Indian Tribe Duwamish Tribal Office Melissa Calvert, Muckleshoot Cultural Resources Program US Army Corp. of Engineers Gretchen Kaehler, Office of Archaeology & Historic Preservation Washington State Department of Ecology August 24, 2018 Washington State Department of Ecology Environmental Review Section PO Box 47703 Olympia, WA 98504-7703 Subject: ENVIRONMENTAL (SEPA) THRESHOLD DETERMINATION Transmitted herewith is a copy of the Environmental Determination for the following project reviewed by the Environmental Review Committee (ERC) on August 20, 2018: SEPA DETERMINATION: Determination of Non-Significance - Mitigated (DNS-M) PROJECT NAME: Cedar at the Highlands Preliminary Plat PROJECT NUMBER: LUA17-000189 Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on September 7, 2018, together with the required fee with: Hearing Examiner, City of Renton, 1055 South Grady Way, Renton, WA 98057. Appeals to the Examiner are governed by RMC 4-8-110 and information regarding the appeal process may be obtained from the City Clerk’s Office, (425) 430-6510. Please refer to the enclosed Notice of Environmental Determination for complete details. If you have questions, please call me at (425) 430-7219. For the Environmental Review Committee, Alex Morganroth Associate Planner DEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT SIGNATURES: Gregg Zimmerman, Administrator Public Works Department Date Rick M. Marshall, Administrator Renton Regional Fire Authority Date Kelly Beymer, Administrator Community Services Department Date C.E. Vincent, Administrator Date Department Of Community & Economic Development ENVIRONMENTAL (SEPA) DETERMINATION OF NON-SIGNIFICANCE - MITIGATED (DNS-M) PROJECT NUMBER: LUA17-000189 APPLICANT: Jamie Waltier, Harbour Homes, LLC / jwaltier@harbourhomes.com / 1441 N 34th St, Ste 300, Seattle, WA 98103 PROJECT NAME: Cedars at the Highlands PROJECT DESCRIPTION: The applicant is requesting Preliminary Plat, SEPA Environmental Review, and a Tier II Temporary Use Permit for approval of a 14-lot subdivision. The 4.49 acre site is located at 14120 160th Ave SE (APN 1457500110) within the Residential-4 zoning district. The rectangular shaped parcel would be divided into 14 residential lots, a storm drainage tract, a tree retention tract, and a critical area tract. The 8,361 square feet (sf) drainage tract consists of a stormwater vault located at the southeast corner of the site. The applicant would dedicate 28,777 sf for public right- of-way to serve the new lots. The proposed lots would range in size from 9,002 sf to 16,100 sf with an average lot size of 10,224 sf. The plat would result in a net density of 3.66 du/ac. Access to the site would be gained by extending a residential access road (Road A) from 160th Ave SE through the center of the lot. The site contains a Type Ns Stream in the northeast corner of the site that requires a minimum 50 ft buffer as well as a 15 ft building setback. No areas meeting wetland criteria were found on the site. Soils consist of medium dense to dense silty sand with gravel and stiff silt (ML). The soil density was observed to increase with depth. The west side of the site is relatively flat. However, the east side of the site descends approximately ten feet towards the southeastern property line. The existing shop and barn are proposed to remain as part of the plat construction. There are 284 significant trees on the site and the applicant is proposing to retain 41 original trees. The applicant has submitted an Arborist Report, Critical Areas Study, Technical Information Report, Traffic Impact Analysis, and a Geotechnical Engineering Study with the application. PROJECT LOCATION: 14120 160th Ave SE, Renton WA 98059 LEAD AGENCY: City of Renton Environmental Review Committee Department of Community & Economic Development The City of Renton Environmental Review Committee has determined that it does not have a probable significant adverse impact on the environment. An Environmental Impact Statement (EIS) is not required under RCW 43.21C.030(2)(c). Conditions were imposed as mitigation measures by the Environmental Review Committee under their authority of Section 4-9-070D Renton Municipal Code. These conditions are necessary to mitigate environmental impacts identified during the environmental review process. Because other agencies of jurisdiction may be involved, the lead agency will not act on this proposal for fourteen (14) days. Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on September 7, 2018. Appeals must be filed in writing together with the required fee with: Hearing Examiner, City of Renton, 1055 South Grady Way, Renton, WA 98057. Appeals to the Examiner are governed by RMC 4-8-110 and more information may be obtained from the Renton City Clerk’s Office, (425) 430-6510. PUBLICATION DATE: August 24, 2018 DATE OF DECISION: August 20, 2018 DocuSign Envelope ID: DA5EE113-EBEA-486A-A176-507A6F80B5DC 8/21/2018 | 3:24 PM PDT 8/20/2018 | 2:13 PM PDT 8/20/2018 | 3:43 PM PDT 8/20/2018 | 3:47 PM PDT DETERMINATION OF NON-SIGNIFICANCE – MITIGATED (DNS-M) MITIGATION MEASURES AND ADVISORY NOTES PROJECT NUMBER: LUA17-000189, ECF, PP, TU APPLICANT: Jamie Waltier, Harbour Homes, LLC / 1441 N 34th St, Ste 300, Seattle, WA 98103 / jwaltier@harbourhomes.com / 206-315-8130 PROJECT NAME: Cedars at the Highlands PROJECT DESCRIPTION: The applicant is requesting Preliminary Plat approval and Environmental Threshold Determination (SEPA) for a proposed 13-lot subdivision. The project site is 195,531 square feet (4.49 acres) and is located at 14120 160th Ave SE. The project site is located in the Residential-4 (R-4) zoning designation. The proposed single-family residential lots range in size from 9,000 square feet to 17,565 square feet with an overall proposed density of 3.36 dwellings per acre. The applicant has requested a Temporary Use Permit to allow for two existing outbuildings to remain for a period of five years. The structures are located across proposed Lots 9 and 10. Additional proposed improvements include a 3,195 sq. ft. storm drainage tract (Tract A) in the southeast corner of the site along the unimproved 162nd Ave SE right-of-way (ROW) frontage, a 3,500 sq. ft. tree retention tract (Tract C) along the north property line adjacent to lots 11 and 12, and a 20,246 native growth protection tract (Tract B) in the north-east corner to encompass the proposed 75-foot reduced wetland buffer. The proposed lots would be served by a new public residential access street off of 160th Ave SE and a cul-de- sac would be provided near the eastern end of the property. Proposed lots would be served by sanitary sewer along the new street that would connect to an existing main within 160th Ave SE. Proposed lots would be served by a new water main extending from 160th Ave SE along the new street. Construction of the proposed subdivision infrastructure improvements would result in approximately 5,000 cubic yards of cut and 8,000 cubic yards of fill. A Type Ns stream and Category III wetlands are mapped on the site according to COR maps and a Wetlands Report submitted by the applicant . Slopes on the site generally fall to the southeast across the property at a range of 0-20%. Soils consist of Alderwood gravelly sandy loam (AgC). The applicant has proposed to retain approximately 35 of the 284 significant trees onsite. The applicant has submitted a Technical Information Report, Arborist Report, a Critical Areas Determination and a Geotechnical Engineering Study with the application. PROJECT LOCATION: 14120 160th Ave SE, Renton WA 98059 LEAD AGENCY: The City of Renton Department of Community & Economic Development Planning Division MITIGATION MEASURES: 1. Project construction shall comply with the recommendations found in the submitted geotechnical support prepared by Earthworks NW, dated February 23, 2017. ADIVISORY NOTES: The following notes are supplemental information provided in conjunction with the administrative land use action. Because these notes are provided as information only, they are not subject to the appeal process for the land use actions. DEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT Page 1 of 6 LUA**-000*** ADVISORY NOTES TO APPLICANT The following notes are supplemental information provided in conjunction with the administrative land use action. Because these notes are provided as information only, they are not subject to the appeal process for the land use action. Planning: (Contact: Name, 425-430-7219, amorganroth@rentonwa.gov) 1. RMC section 4-4-030.C.2 limits haul hours between 8:30 am to 3:30 pm, Monday through Friday unless otherwise approved by the Development Services Division. 2. Commercial, multi-family, new single family and other nonresidential construction activities shall be restricted to the hours between seven o’clock (7:00) a.m. and eight o’clock (8:00) p.m., Monday through Friday. Work on Saturdays shall be restricted to the hours between nine o’clock (9:00) a.m. and eight o’clock (8:00) p.m. No work shall be permitted on Sundays. 3. Within thirty (30) days of completion of grading work, the applicant shall hydroseed or plant an appropriate ground cover over any portion of the site that is graded or cleared of vegetation and where no further construction work will occur within ninety (90) days. Alternative measures such as mulch, sodding, or plastic covering as specified in the current King County Surface Water Management Design Manual as adopted by the City of Renton may be proposed bet ween the dates of November 1st and March 31st of each year. The Development Services Division’s approval of this work is required prior to final inspection and approval of the permit. 4. A National Permit Discharge Elimination System (NPDES) permit is required when more than one acre is being cleared. 5. The applicant will be required to submit a Final Wetlands Mitigation Report and Maintenance and Monitoring proposal. In addition, the applicant will be required to comply with all the code requirements of RMC 4-3-050 Critical Areas. This includes, but is not limited to, placing the critical area within a Native Growth Protection Easement, providing fencing and signage, and providing the City with a site restoration surety device and, later, a maintenance and moni toring surety device. 6. The applicant may not fill, excavate, stack or store any equipment, dispose of any materials, supplies or fluids, operate any equipment, install impervious surfaces, or compact the earth in any way within the area defined by the drip line of any tree to be retained. 7. The applicant shall erect and maintain six foot (6') high chain link temporary construction fencing around the drip lines of all retained trees, or along the perimeter of a stand of retained trees. Placards shall be placed on fencing every fifty feet (50') indicating the words, “NO TRESPASSING – Protected Trees” or on each side of the fencing if less than fifty feet (50'). Site access to individually protected trees or groups of trees shall be fenced and signed. Individual trees shall be fenced on four (4) sides. In addition, the applicant shall provide supervision whenever equipment or trucks are moving near trees. 8. This permit is shall comply with the Bald and Golden Eagle Protection Act. The permitted is responsible for adhering to the U.S. Fish and Wildlife Service National Bald Eagle Management Guidelines (2007) and /or your U.S. Fish and Wildlife Service permit. Development Engineering: (Contact: Name, 425-430-7298, rnair@rentonwa.gov) 1. See Attached Development Engineering Memo dated August 17, 2017 ADVISORY NOTES TO APPLICANT Page 2 of 6 LUA**-000*** Fire Authority: (Contact: Corey Thomas, 425-430-7024, cthomas@rentonwa.gov) Environmental Impact Comments: 1. The fire impact fees are applicable at the rate of $718.56 per single family unit. This fee is paid at building permit issuance. Code Related Comments: 1. The fire flow requirement for a single family home is 1,000 gpm minimum for dwellings up to 3,600 square feet (including garage and basements). If the dwelling exceeds 3,600 square feet, a minimum of 1,500 gpm fire flow would be required. A minimum of one fire hydrant is required within 300 -feet of the proposed buildings and two hydrants if the fire flow goes up to 1,500 gpm. Ther e are no existing hydrants within 300-feet of the proposed homes. Existing 4-inch water main in 160th Ave SE will not provide the minimum required fire flow, new on-site and off-site water mains will be required. A water availability certificate is required from King County Water District 90. Fire sprinkler systems may be required if insufficient fire flow cannot be obtained. 2. Fire department apparatus access roadways are required to be a minim um of 20-feet wide fully paved, with 25-feet inside and 45-feet outside turning radius. Fire access roadways shall be constructed to support a 30-ton vehicle with 75-psi point loading. Access is required within 150-feet of all points on the buildings. An approved cul-de-sac type 90-foot diameter turnaround is required for all dead end streets exceeding 300-feet in length. Building: (Contact: Craig Burnell, 425-430-7290, cburnell@rentonwa.gov) 1. Recommendations of the geotechnical report must be followed as a condition of building permits. ADVISORY NOTES TO APPLICANT Page 3 of 6 LUA**-000*** DEPARTMENT OF COMMUNITY AND ECONOMIC DEVELOPMENT M E M O R A N D U M DATE: August 17, 2017 TO: Alex Morganroth, Associate Planner FROM: Rohini Nair, Civil Engineer III, Plan Review SUBJECT: Cedars at the Highlands Plat 14120 160th Ave SE LUA17-000189 I have reviewed the preliminary plat application for the above-referenced proposal located at parcel 1457500110 and have the following comments: EXISTING CONDITIONS The site is approximately 4.49 acres in size and is rectangular in shape. The existing site is developed with an existing workshop, one shed and gravel driveway. The site includes: Water Water service is provided by King County Water District 90 (425-255-9600 or www.kcwd90.com). The site is located outside of an Aquifer Protection Area. Sewer Wastewater service is provided by the City of Renton. There is an existing 10-inch wastewater main located in 160th Ave SE (see City plan no. S-3235). There is an existing 8-inch wastewater main located in 162nd Ave SE (see City plan no. S-3613). Storm There is an existing 12-inch stormwater main located in 160th Ave SE. There is an existing stormwater ditch located in 160th Ave SE fronting the subject property. Streets The proposed development fronts 160th Ave SE along the west property line(s). 160th Ave SE is classified as a Residential Access Road. Existing right-of-way (ROW) width is approximately 60 feet. The proposed development fronts 162nd Ave SE along the east property line(s). 162nd Ave SE is classified as a Residential Access Road, and is an unimproved right-of-way. Existing right-of-way (ROW) width is approximately 60 feet. CODE REQUIREMENTS WATER 1. A water availability certificate from King County Water District 90 was provided with the site plan submittal. The water availability certificate noted that a flow rate of 1,500 gallons per minute (gpm) can be provided to the site by an 8” water main extension to the site. 2. Review of the water plans will be conducted by King County Water District 90 and the Renton Regional Fire Authority. ADVISORY NOTES TO APPLICANT Page 4 of 6 LUA**-000*** 3. Plans approved by King County Water District 90 shall be routed to the City for final review prior to permit issuance. SEWER 1. The development is subject to a wastewater system development charge (SDC) fee. The 2018 SDC fee for sewer is based on the size of the new domestic water to serve the project. The current sewer fee for a 1 -inch meter install is $2,837.00 per meter. Each lot shall have a separate meter. The final fee amount is calculated and payable at the time of construction permit issuance. 2. The development is in the Central Plateau Interceptor Special Assessment Districts (SADs). a. The Area SAD fee for the Central Plateau Interceptor SAD is $351.95, plus interest of $0.05111 per day, for each lot. As of 8/7/2018, the total SAD fee is calculated as $519.78 per lot. The final fee amount is calculated and payable at the time of construction permit issuance. b. The Frontage SAD fee for the Central Plateau Interceptor SAD is $5,810.34, plus interest of $0.84369 per day, for each lot with frontage along 160th Ave SE. As of 8/7/2018, the total SAD fee is calculated as $8,581.03 for each lot that has frontage on 160th Ave SE. The final fee amount is calculated and payable at the time of construction permit issuance. 3. The existing sewer main along 160th Avenue SE along with the existing sewer service located on Lot 1 as shown on the composite utility civil plan submitted with the Land Use Application. 4. The proposed sewer main improvements as shown on the composite utility civil plan submitted with the Land Use Application provides the required 8-inch sewer main extension from the existing sewer main located in 162nd Avenue SE and extending west into Cedars at the Highlands for future extension by the City. The required extension of the new 8-inch sewer main from 162nd Avenue SE into the future public ROW is shown on the conceptual utilities plan and provides the required sanitary sewer service to lots accessing off of internal project street except Lot 1 which will utilize the existing sewer service on the lot. The lots accessing from 160th Avenue SE will obtain sanitary sewer service from the existing 8-inch sewer main within 160th Avenue SE. a. A 15-foot public sewer easement is shown A 15-foot public sewer easement shall be provided for the extension of the sewer main through the stormwater tract for any portion of the extension located outside of the public ROW. 5. All new side sewers shall be 6”. All side sewers shall flow by gravity to the main at a minimum slope of 2%. As shown on the preliminary utility plan, each lot shall have its own side sewer. SURFACE WATER 1. The development is subject to a storm water system development charge (SDC) fee. The 2018 SDC fee for storm water is $1,718.00 for each new lot. The final fee amount is calculated and payable at the time of construction permit issuance. 2. A Preliminary Drainage Plan and Technical Information Report (TIR) prepared by DR Strong dated June 29, 2018 were submitted to the City as part of the site plan submittal. The site is located in the City’s Flow Control Duration Standard (Forested Site Conditions). The site is located in the Lower Cedar River drainage basin. The TIR was completed in accordance with the standards found in the 2017 Renton Surface Water Design Manual (RSWDM). All nine core and six special requirements were addressed. A detention vault is proposed to meet the flow control facility requirement to satisfy Core Requirement #3. The detention vault has been sized to the City’s Flood Problem Flow Control Standard (King County Level 3) using WWHM to help mitigate potential downstream drainage issues. The project matches the pre-developed discharge rates from 50% of the 2-year peak flow up to the full 50-year peak flow and peak discharge rates for the 2 and 10- year return periods as required in the City’s Flow Control Duration Standard (Forested Site Conditions) area. In addition, the site matches the 100-year peak discharge rate to the pre-developed 100-year peak discharge rate to meet the City’s Flood Problem Flow Control Standard. The project is subject to Basic Water Quality treatment standards to satisfy Core Requirement #8. A stormwater quality vault following the detention vault will be utilized to address this requirement. ADVISORY NOTES TO APPLICANT Page 5 of 6 LUA**-000*** The project is subject to on-site BMP requirements found in Core Requirement #9. Full dispersion and full infiltration are not feasible on-site BMPs as the minimum design requirements cannot be met. Permeable pavement, bioretention, and rain gardens were deemed infeasible per the infiltration testing in the geotechnical report. Limited infiltration is deemed infeasible due to the till soils. Basic dispersion may be feasible. If feasible, basic dispersion should be implemented to the maximum extent feasible which may be more than 10% of the total lot area. Feasibility of on-site BMPs for each lot will be reviewed at the time of single family building permit. The restricted footprint BMP can still be used in addition to receive the 10% lot area modeling credit when sizing the detention vault. Final TIR should clearly explain how target surfaces from plat infrastructure (road and sidewalk) are mitigated by on-site BMPs or how BMPs are infeasible for these surfaces. 3. A geotechnical report evaluating site soil conditions was prepared by Earth Solutions NW LLC dated February 23, 2017 and a Geotechnical Infiltration Evaluation prepared by Earth Solutions NW LLC dated July 13, 2017. The report describes the site’s erosion hazard level as low. The soils on site were described as 4 to 10 inches of organics over medium dense silty sand with gravel and dense poorly graded sand were encountered extending to the maximum exploration depth of 11.5 feet below existing grade. There was approximately 1.0’ to 4.0’ of fill encountered in the northwest portion of the site. Earth Solutions NW LLC evaluated onsite soils for infiltration using the “Pilot Infiltration Testing” at four locations. The Pilot Infiltration Test is an approved infiltration testing procedure per Section C.1.3 of the RSWDM. No infiltration was observed in three out of the four locations. At the fourth location (TP-104, located in the southeast portion of the site) there was limited infiltration however advancing the test pit deeper than the infiltration test depth resulted in an observed confining layer of silt that limits the capacity of the underlying subgrade to infiltrate. It is the geotechnical engineer’s opinion that this confining soil layer can result in lateral migration of water which can create flooding rated issues on the neighboring properties to the south of the subject site since it is sited lower in the elevation than the subject property. 4. The report concludes that infiltration of stormwater and low impact development (LID) techniques at the site are infeasible. 5. There is an existing Unspecified Drainage Conveyance System flowing through the project site that appears to convey upstream tributary from 160th Avenue SE. The Applicant is proposing to capture and convey this upstream flow to the downstream conveyance system via a storm water piped system that will be routed through the future proposed right of way through the project site. The size of the bypass conveyance system shall be determine in accordance with the RSWDM and provided as part of the Civil Construction Permit Application. 6. A Construction Stormwater Permit from Department of Ecology is required if clearing and grading of the site exceeds one acre. TRANSPORTATION 1. Each new lot is subject to a transportation impact fee. The 2018 transportation impact fee is $5,430.85 per single family home. A credit for one lot will be issued due for the existing home. The transportation impact fee is due at the time of building permit issuance for each individual home. 2. The proposed development fronts 160th Ave SE along the west property line(s). 160th Ave SE is classified as a Residential Access Road. Existing right-of-way (ROW) width is approximately 60 feet, which satisfies the RMC 4-6- 060 required minimum required ROW width of 53 feet. No additional right-of-way fronting the site will be required. To provide consistency with the existing pavement width in the corridor adjacent to the project site, a half street paved width of 16 feet, gutter, 0.5 feet wide curb, 8 feet wide landscaped planter, 5 feet wide sidewalk, street trees, storm drainage improvements and undergrounding of any overhead utility lines along the frontage of the property are required on the project frontage. 3. The proposed development fronts 162nd Ave SE along the east property line(s). 162nd Ave SE is classified as a Residential Access Road, and is an unimproved right-of-way. Existing right-of-way (ROW) width is approximately 60 feet, which satisfies the RMC 4-6-060 required minimum required ROW width of 53 feet. Per RMC 4-6-060, a paved half street width of 13 feet, a 0.5-foot curb, an 8-foot planting strip, an 5-foot sidewalk, street trees, storm drainage improvements, and undergrounding of all utilities are required on the project frontage. However, the applicant has submitted a street modification request to allow the existing street and frontage section to remain. ADVISORY NOTES TO APPLICANT Page 6 of 6 LUA**-000*** The modification was requested due to the presence of the stream that runs through the ROW and altering the existing conditions of 162nd Ave SE would impact the stream and the adjacent critical area. Staff supports the requested modification. 4. A dead end public street with 53 feet ROW width and 26 feet wide pavement is proposed for the internal site access. 0.5 feet wide curb, 8 foot wide planters and 5 foot wide sidewalks are proposed on both sides of the internal street. The proposed widths meet the minimum required widths mentioned in RMC 4-6-060. Undergrounding of all utilities is required. 5. Current City of Renton standards require a cul-de-sac turnaround for dead-end streets greater than 300 feet and less than 500 feet. Reference RMC 4-6-060H. a. Cul-de-sacs shall have a minimum paved and landscaped radius of 45 feet with a right-of-way radius of 55 feet for the turnaround. b. The cul-de-sac turnaround shall have a design approved by the Administrator and Fire and Emergency Services. 6. Refer to City code 4-4-080 regarding driveway regulations. a. A minimum separation of 5 feet is required between driveway and the property line. b. Maximum driveway slopes shall not exceed 15%. Driveways exceeding 8% shall provide slotted drains. c. The maximum width of single loaded garage driveway shall not exceed nine feet (9') and double-loaded garage driveway shall not exceed sixteen feet (16'). 7. Street lighting is required from a development that includes more than 4 residential units. A photometric study and street lighting plan per City standard shall be submitted at the time of construction permit review. 8. All ramps and sidewalks shall be designed in accordance with ADA Regulations. 9. Paving and trench restoration within the City of Renton right of way shall comply with the City’s Restoration and Overlay requirements. GENERAL COMMENTS 1. The fees listed are for 2018. The fees that are current at the time of the respective permit issuance will be levied. Please see the City of Renton website for the current fee schedule. 2. Retaining walls that are 4’ or taller from bottom of footing and stormwater detention vaults will require a separate building permit. Structural calculations and plans prepared by a licensed engineer will be required as part of the building permit review. 3. All civil plans shall conform to the current City of Renton survey and drafting standards. Current drafting standards can be found on the City of Renton website. 4. A separate plan submittal will be required for a construction permit for utility work and street improvements. All plans shall be prepared by a licensed Civil Engineer in the State of Washington. 5. Please see the City of Renton Development Engineering website for the Construction Permit Application and Construction Permit Process and Submittal Requirements. Please contact the City to schedule a construction permit intake meeting. 6. All utilities serving the site are required to be undergrounded. DEPARTMENT OF COMMUNITY & ECONOMIC DEVELOPMENT Planning Division 1055 South Grady Way, 6th Floor | Renton, WA 98057 | 425-430-7200, ext. 2 www.rentonwa.gov OF ENVIRONMENTAL DETERMINATION ISSUANCE OF A DETERMINATION OF NON-SIGNIFICANCE - MITIGATED (DNS-M) POSTED TO NOTIFY INTERESTED PERSONS OF AN ENVIRONMENTAL ACTION DNSM: THE CITY OF RENTON ENVIRONMENTAL REVIEW COMMITTEE (ERC) HAS DETERMINED THAT THE PROPOSED ACTION HAS PROBABLE SIGNIFICANT IMPACTS THAT CAN BE MITIGATED THROUGH MITIGATION MEASURES. DATE OF NOTICE OF ENVIRONMENTAL DETERMINATION: August 24, 2018 PROJECT NAME/NUMBER: LUA17-000189 PROJECT LOCATION: 14120 160th Ave SE, Renton, WA 98059 LOCATION WHERE APPLICATION MAY BE REVIEWED: Applicant documents are available online through the City of Renton Document Center website. See also https://bit.ly/2o9cd8c PROJECT DESCRIPTION: The applicant is requesting Preliminary Plat approval and Environmental Threshold Determination (SEPA) for a proposed 13-lot subdivision. The project site is 195,531 square feet (4.49 acres) and is located at 14120 160th Ave SE. The project site is located in the Residential-4 (R-4) zoning designation. The proposed single-family residential lots range in size from 9,000 square feet to 17,565 square feet with an overall proposed density of 3.36 dwellings per acre. The applicant has requested a Temporary Use Permit to allow for two existing outbuildings to remain for a period of five years. The structures are located across proposed Lots 9 and 10. Additional proposed improvements include a 3,195 sq. ft. storm drainage tract (Tract A) in the southeast corner of the site along the unimproved 162nd Ave SE right-of-way (ROW) frontage, a 3,500 sq. ft. tree retention tract (Tract C) along the north property line adjacent to lots 11 and 12, and a 20,246 native growth protection tract (Tract B) in the north-east corner to encompass the proposed 75-foot reduced wetland buffer. The proposed lots would be served by a new public residential access street off of 160th Ave SE and a cul-de-sac would be provided near the eastern end of the property. Proposed lots would be served by sanitary sewer along the new street that would connect to an existing main within 160th Ave SE. Proposed lots would be served by a new water main extending from 160th Ave SE along the new street. Construction of the proposed subdivision infrastructure improvements would result in approximately 5,000 cubic yards of cut and 8,000 cubic yards of fill. A Type Ns stream and Category III wetlands are mapped on the site according to COR maps and a Wetlands Report submitted by the applicant. Slopes on the site generally fall to the southeast across the property at a range of 0-20%. Soils consist of Alderwood gravelly sandy loam (AgC). The applicant has proposed to retain approximately 35 of the 284 significant trees onsite. The applicant has submitted a Technical Information Report, Arborist Report, a Critical Areas Determination and a Geotechnical Engineering Study with the application. Appeals of the environmental determination must be filed in writing on or before 5:00 p.m. on September 7, 2018, together with the required fee with: Hearing Examiner, City of Renton, 1055 South Grady Way, Renton, WA 98057. Appeals to the Examiner are governed by City of RMC 4-8-110 and information regarding the appeal process may be obtained from the Renton City Clerk’s Office, (425) 430-6510. PUBLIC HEARING: A public hearing is tentatively scheduled for September 18, 2018 at 11:00 AM before the Renton Hearing Examiner in Renton Council Chambers on the 7th floor of Renton City Hall, located at 1055 South Grady Way. If the Environmental Determination is appealed, the appeal will be heard as part of this public hearing. NOTICE © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 1 of 24 Renton, Washington DRS Project No. 16041 CITY OF RENTON ENVIRONMENTAL CHECKLIST CEDARS AT THE HIGHLANDS PURPOSE OF CHECKLIST: Governmental agencies use this checklist to help determine whether the environmental impacts of your proposal are significant. This information is also helpful to determine if available avoidance, minimization or compensatory mitigation measures will address the probable significant impacts or if an environmental impact state ment will be prepared to further analyze the proposal. INSTRUCTIONS FOR APPLICANTS: This environmental checklist asks you to describe some basic information about your proposal. Please answer each question accurately and carefully, to the best of your knowledge. You may need to consult with an agency specialist or private consultant for some questions. You may use “not applicable” or "does not apply" only when you can explain why it does not apply and not when the answer is unknown . You may also attach or incorporate by reference additional studies reports. Complete and accurate answers to these questions often avoid delays with the SEPA process as well as later in the decision-making process. The checklist questions apply to all parts of your proposal, even if you plan to do them over a period of time or on different parcels of land. Attach any additional information that will help describe your proposal or its environmental effects. The agency to which you submit this checklist may ask you to expla in your answers or provide additional information reasonably related to determining if there may be significant adverse impact. © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 2 of 24 Renton, Washington A. BACKGROUND 1. Name of proposed project, if applicable: Cedars at the Highlands 2. Name of applicant: Harbour Homes, LLC 3. Address and phone number of applicant and contact person: Applicant: Harbour Homes, LLC 400 North 34th Street, Suite 300 Seattle, WA 98103 (206) 315-8130 Contact Person: Jamie Waltier 400 North 34th Street, Suite 300 Seattle, WA 98103 (206) 315-8130 4. Date checklist prepared: June 26, 2018 5. Agency requesting checklist: City of Renton 6. Proposed timing or schedule (including phasing, if applicable): Construction will start upon the receipt of all required building and construction permits. This is estimated to occur in the Spring, 2019. 7. Do you have any plans for future additions, expansion, or further activity related to or connected with this Proposal? If yes, explain. The plan is to construct 11 new single- family residences as part of this Proposal. Two of the lots will remain unchanged. © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 3 of 24 Renton, Washington 8. List any environmental information you know about that has been prepared, or will be prepared, directly related to this Proposal. Arborist Report: Greenforest, Inc Geotechnical Report: Earth Solutions NW Critical Areas Study: Sewall Wetland Consulting, Inc. Level One Downstream Analysis: D. R. STRONG Consulting Engineers Inc. Trip Generation Letter: Traffex 9. Do you know whether applications are pending for governmental approvals of other proposals directly affecting the property covered by your Proposal? If yes, explain. None to our knowledge. 10. List any government approvals or permits that will be needed for your Proposal, if known. SEPA Determination City of Renton Preliminary Subdivision Approval City of Renton Grading Permit City of Renton Final Subdivision Approval City of Renton Building Permit City of Renton Other Customary Construction Related Permits City of Renton Construction General Stormwater Permit Department of Ecology 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.). Subdivide approximately 4.49 acres into 13 single-family residential lots, one internal local access street with cul-de-sac, one storm drainage tract, one tree retention tract, and one sensitive area tract. Access to the subdivision will be from 160th Ave SE. 12. Location of the Proposal. Give sufficient information for a person to understand the © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 4 of 24 Renton, Washington 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. The Project is located in the SE ¼ of Section 14, Township 23 North, Range 5 East. The Site is located at 14120 160th Avenue SE, Renton, Washington. © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 5 of 24 Renton, Washington B. ENVIRONMENTAL ELEMENTS 1. EARTH a. General description of the site (circle one). Flat, rolling, steep slopes, mountainous other. In general, the majority of the property has slopes of less than 15%. The Site slopes from the west property line to the southeast. A high point is located at the northwest corner of the site. b. What is the steepest slope on the site (approximate percent slope)? There is one isolated area where slopes are approximately 20-50% over a span of 175 ft. This area is located at the northeast corner of the Site bordering the type Ns stream and Category III Wetland, which will be located inside the Sensitive Area Tract B. c. What general types of soils are found on the site (for example, clay, sand, gravel, peat, muck)? If you know the classifi- cation of agricultural soils, specify them and note any prime farmland. The soils on the Site are mapped in the Soil Survey of King County, Washington, prepared by the U.S. Department of Agriculture, Soil Conservation Service and has classified the Site as Adlerwood Gravelly Sandy Loam, slopes 8-15% (AgC). Additionally, see attached Geotechnical Report dated February 23, 2017. d. Are there surface indications or history of unstable soils in the immediate vicinity? If so, describe. Per the City of Renton’s Landslide Hazard Areas Map there are no risks © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 6 of 24 Renton, Washington of unstable soils in the vicinity of the Site. e. Describe the purpose, type, and approximate quantities and total affected area of any filling or grading proposed. Indicate source of fill. The purpose of the site grading will be to construct the utilities, local access streets, finished grade pad elevations and a drainage tract. Approximately 4,450 c.y. of cut and 7,716 c.y. of fill is computed for the Project. The net volume is approximately 3,266 c.y. of fill. f. Could erosion occur as a result of clearing, construction, or use? If so, generally describe. There could be a short-term increase in the potential for on-site erosion where soils are exposed during site preparation and construction; however, the Project will comply with all applicable erosion control measures, short term and long term. g. About what percent of the site will be covered with impervious surfaces after project construction (for example, asphalt or buildings)? Approximately 45% of the Site will be covered by impervious surfaces. h. Proposed measures to reduce or control erosion, or other impacts to the earth, if any. A temporary erosion control plan will be implemented at the appropriate time. Erosion control measures may include the following: hay bales, siltation fences, temporary siltation ponds, controlled surface grading, stabilized construction entrance, and other measures, which may be used © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 7 of 24 Renton, Washington in accordance with requirements of the City of Renton. 2. AIR a. What types of emissions to the air would result from the Proposal during con- struction, operation and maintenance when the project is completed? (i.e., dust, automobile odors, industrial wood smoke.) If any, generally describe and give approximate quantities if known. Short-term emissions will be typical of those associated with construction and site development activities. These may include dust and emissions from construction equipment. Long-term impacts will result from increased vehicle traffic. b. Are there any off -site sources of emissions or odor that may affect your Proposal? If so, generally describe. Off-site sources of emissions or odors are those that are typical of residential neighborhoods. These will include automobile emissions from traffic on adjacent roadways and fireplace emissions from nearby homes. c. Proposed measures to reduce or control emissions or other impacts to air, if any. The Washington Clean Air Act requires the use of all known, available, and reasonable means of controlling air pollution, including dust. Construction impacts will not be significant and could be controlled by measures such as washing truck wheels before exiting the site and maintaining gravel construction entrances. In addition, dirt-driving surfaces will be watered during extended dry periods to control dust. © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 8 of 24 Renton, Washington 3. WATER a. Surface. i. Is there any surface water body on or in the immediate vicinity of the site (including year-round and seasonal streams, saltwater, lakes, ponds, wetlands)? If yes, describe type and provide names. If appropriate, state what stream or river it flows into. An unnamed stream classified as Type Ns flows through the northeast corner of the Site. There is also a Category III Wetland located near the northeast corner of the Site. The onsite stream and wetland connect to two larger offsite wetlands per the City of Renton Maps. ii. Will the project require any work over, in, or adjacent to (within 200 feet) the described waters? Yes, there will be work within 200 feet of the unnamed stream and Category III Wetland located in Sensitive Area Tract B. iii. Estimate the amount of fill and dredge material that would be placed in or removed from sur- face water or wetlands and indicate the area of the site that would be affected. Indicate the source of fill material. None. iv. Will the Proposal require surface water withdrawals or diversions? Give general description, © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 9 of 24 Renton, Washington purpose, and approximate quantities if known. No, there will be no surface water withdrawals or diversions. v. Does the Proposal lie within a 100-year floodplain? If so, note location on the site plan. Not to our knowledge. vi. Does the Proposal involve any discharges of waste materials to surface waters? If so, describe the type of waste and anticipated volume of discharge. No, a public sanitary sewer system will be installed to serve the residential units. There will be no discharge of waste materials to surface waters. b. Ground. i. Will groundwater be withdrawn from a well for drinking water or other purposes? If so, give a general description of the well, proposed uses and approximate quantities withdrawn from the well? Will water be discharged to groundwater? Give general description, purpose, and approximate quantities if known. No groundwater will be withdrawn. Public water mains will be installed to serve the development. No water will be discharged to the groundwater. ii. Describe waste material that will be discharged into the ground from septic tanks or other sources, if any (for example: Domestic sewage; industrial, © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 10 of 24 Renton, Washington containing the following chemi- cals; 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 an- imals or humans the system(s) are expected to serve. No waste material will be discharged into the ground. The Site will be served by public sanitary sewer system. c. Water Runoff (including storm water). i. Describe the source of runoff (including storm water) and method of collection and disposal, if any (include quanti- ties, if known). Where will this water flow? Will this water flow into other waters? If so, describe. See D.R. Strong Consulting Engineers, Inc. Level One Downstream Analysis Report. ii. Could waste materials enter ground or surface waters? If so, generally describe. The proposed stormwater system will be designed to minimize or eliminate entry of waste materials or pollutants to ground water resources and/or surface waters. Oils, grease, and other pollutants from the addition of paved areas could potentially enter the groundwater or downstream surface water runoff. iii. Does the proposal alter or otherwise affect drainage © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 11 of 24 Renton, Washington patterns in the vicinity of the site? If so, describe. The proposal will not affect the drainage patterns in the vicinity of the site. The new development will discharge water into a detention vault and discharge at the site’s natural location. d. Proposed measures to reduce or control surface, ground, and runoff water impacts, if any. A City approved drainage system will be designed and constructed to mitigate any adverse impacts from storm water runoff. Temporary and permanent drainage facilities will be used to control quality and quantity of surface runoff during construction and after development. 4. PLANTS a. Check or circle types of vegetation found on the site: x deciduous tree: alder, maple, aspen, vine maple, cottonwood, willow other: apple, cherry, beech, dogwood, filbert, holly, Italian plum, ornamental plum, x evergreen tree: fir, cedar, spruce, pine, other: black locust, madrona, x shrubs grass (orchard grass) x pasture crop or grain wet soil plants: cattail, buttercup, bulrush, other: water plants: water lily, eelgrass, milfoil, other: other types of vegetation (Deer fern, blackberry, holly, scotch broom) b. What kind and amount of vegetation will be removed or altered? © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 12 of 24 Renton, Washington Nearly all vegetation will be removed or altered during construction. Trees within the Sensitive Area Tract B and the Tree Retention Tract C will remain, additionally a tree retention plan will be provided. c. List threatened or endangered species known to be on or near the site. None to our knowledge. d. Proposed landscaping, use of native plants, or other measures to preserve or enhance vegetation on the site, if any. If necessary, replacement trees will be planted to mitigate for significant trees removed. Landscaping will be installed in accordance with the provisions of the City of Renton’s Zoning Code. e. List all noxious weeds and invasive species known to be on or near the site. None to our knowledge. 5. ANIMALS a. Circle any birds and animals, which have been observed on or near the site or are known to be on or near the site. birds: hawk, heron, eagle, songbirds, other: mammals: deer, bear, elk, beaver, small rodents, raccoon, other: fish: bass, salmon, trout, herring, shellfish other: b. List any threatened or endangered species known to be on or near the site. None to our knowledge. c. Is the site part of a migration route? If so, explain. © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 13 of 24 Renton, Washington Western Washington is in the migration path of a wide variety of non-tropical songbirds, and waterfowl, including many species of geese. d. Proposed measures to preserve or enhance wildlife, if any. None at this time. e. List any invasive animal species known to be on or near the site. None to our knowledge. 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. Electricity and/or natural gas will serve as the primary energy source for residential heating and cooking within the development. Any wood stoves incorporated into the new residential units will comply with all local and State regulations. b. Would your project affect the potential use of solar energy by adjacent properties? If so, generally describe. No. 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. The required measures of the Washington State Energy Code and the Uniform Building Code will be incorporated in the construction of the residential units. Energy conservation fixtures and materials © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 14 of 24 Renton, Washington are encouraged in all new construction. 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. There are no known on-site environmental health hazards known to exist today and none will be generated as a direct result of this proposal. i. Describe any known or possible contamination at the site from present or past uses. None to our knowledge. ii. Describe any existing hazardous chemicals/conditions that might affect project development and design. This includes underground hazardous liquid and gas transmission pipelines located within the project area and in the vicinity. No hazardous chemicals or conditions exist to our knowledge. iii. Describe any toxic or hazardous chemicals that might be stored, used, or produced during the project’s development or construction, or at any time during the operation of the life of the project. No toxic or hazardous chemicals will be stored on the site. © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 15 of 24 Renton, Washington iv. Describe special emergency services that might be required. No special emergency services will be required. v. Proposed measures to reduce or control environmental health hazards, if any. Special measures are not anticipated. b. Noise i. What types of noise exist in the area which may affect your project (for example: traffic, equipment, operation, other)? The primary source of off-site noise in the area originates from vehicular traffic present on adjacent streets. ii. What types and levels of noise would be created by or as- sociated with the project on a short-term or a long-term basis (for example: traffic, construction, operation, other)? Indicate what hours noise would come from the site. Short-term impacts will result from the use of construction equipment during site development and residential construction. Construction will occur during the day-light hours, and in compliance with all noise ordinances. Construction noise is generated by heavy equipment, hand tools and the transporting of construction materials and equipment. Long-term impacts will be those associated with the increased use of the property by homeowners. © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 16 of 24 Renton, Washington iii. Proposed measures to reduce or control noise impacts, if any. Construction will be performed during normal daylight hours. Construction equipment will be equipped with noise mufflers. 8. LAND AND SHORELINE USE a. What is the current use of the site and adjacent properties? Will the proposed affect current land uses of nearby or adjacent properties? If so, describe. The current use of the site is two accessory structures on 4.49 acres. The current use of adjacent properties is listed as follows: North: Single Family Residential South: Single Family Residential East: Single Family Residential West: Single Family Residential b. Has the project site been used as working farmlands or working forest lands? If so, describe. How much agricultural or forest land of long-term commercial significance will be converted to other uses as a result of the proposal, if any? If resource lands have not been designated, how many acres in farmland or forest land tax status will be converted to non-farm or non-forest use? Not to our knowledge. i. Will the proposal affect or be affected by surrounding working farm or forest land normal business operations, such as oversize equipment access, the application of pesticides, tilling, and harvesting? If so, how; Not to our knowledge. © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 17 of 24 Renton, Washington c. Describe any structures on the site. The Site is currently developed with a workshop, shed and gravel driveways. d. Will any structures be demolished? If so, what? Yes, the existing barn will be demolished. e. What is the current zoning classification of the site? The current zoning classification is Residential, R-4. f. What is the current comprehensive plan designation of the site? Residential g. If applicable, what is the current shoreline master program designation of the site? N/A h. Has any part of the site been classified critical area by the city or the county? If so, specify. The City of Renton GIS shows a wetland located in the northeast corner of the Site. i. Approximately how many people would reside or work in the completed project? Approximately 28 individuals will reside in the completed residential development (11 units x 2.58 persons per household = 28.38 individuals). j. Approximately how many people would the completed project displace? Zero people will be displaced. k. Proposed measures to avoid or reduce displacement impacts, if any. None at this time. © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 18 of 24 Renton, Washington l. Proposed measures to ensure the Proposal is compatible with existing and projected land uses and plans, if any. The proposed development is compatible with the prescribed land use codes and designations for this site. Per the City Zoning Code, the development is consistent with the density requirements and land use of this property. m. Proposed measures to ensure the Proposal is compatible with nearby agricultural and forest lands of long-term commercial significance, if any. None are proposed. 9. HOUSING a. Approximately how many units would be provided, if any? Indicate whether high, middle, or low-income housing. The completed project will provide 11 detached single-family residential homes. Homes will be priced with a market orientation to the middle to high-income level homebuyer. b. Approximately how many units, if any, would be eliminated? Indicate whether high, middle, or low-income housing. Zero residences will be eliminated. c. Proposed measures to reduce or control housing impacts, if any. None. 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? The maximum building height will conform to City of Renton’s Standards. © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 19 of 24 Renton, Washington b. What view in the immediate vicinity would be altered or obstructed? Views in the vicinity are not likely to be enhanced, extended or obstructed by development of this project. c. Proposed measures to reduce or control aesthetic impacts, if any? The location of the buildings adheres to or exceeds the minimum setback requirements of the zoning district. The landscaping will be installed at the completion of building and paving construction. A Homeowners Association will maintain the landscaping and common elements. 11. LIGHT AND GLARE a. What type of light or glare will the Proposal produce? What time of day would it mainly occur? Light and glare will be produced from building lighting. Light will also be produced from vehicles using the site. The light and glare will occur primarily in the evening and before dawn. b. Could light or glare from the finished project be a safety hazard or interfere with views? Light and glare from the project will not cause hazards or interfere with views. c. What existing off-site sources of light or glare may affect your Proposal? The primary off-site source of light and glare will be from vehicles traveling along the area roadways. Also, the adjacent residential uses and streetlights may create light and glare. © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 20 of 24 Renton, Washington d. Proposed measures to reduce or control light and glare impacts, if any. Street lighting will be installed in a manner that directs the light downward. The proposed perimeter landscaping will create a partial visual buffer between the proposed units and the surrounding neighborhood areas. 12. RECREATION a. What designated and informal recreational opportunities are in the immediate vicinity? Liberty High School (east of the Site, accessed via 136th Street) Ron Regis Park (southwest of the Site, off of Renton Maple Valley Hwy) b. Would the proposed project displace any existing recreational uses? If so, describe. No. c. Proposed measures to reduce or control impacts on recreation, including recreation opportunities to be provided by the project or applicant, if any. None. 13. HISTORIC AND CULTURAL PRESERVATION a. Are there any buildings, structures, or sites, located on or near the site that are over 45 years old listed in or eligible for listing in national, state, or local preservation registers located on or near the site? If so, specifically describe. According to the Washington Information System for Architectural and Archaeological Records Data (WISAARD) the property, 14120 160th Avenue SE, is not historic property recorded in the inventory at this time. © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 21 of 24 Renton, Washington b. Are there any landmarks, features, or other evidence of Indian or historic use or occupation? This may include human burials or old cemeteries. Are there any material evidence, artifacts, or areas of cultural importance on or near the site? Please list any professional studies conducted at the site to identify such resources. None known. c. Describe the methods used to assess the potential impacts to cultural and historic resources on or near the project site. Examples include consultation with tribes and the department of archeology and historic preservation, archaeological surveys, historic maps, GIS data, etc. The King County GIS data and Washington Information System for Architectural and Archaeological Records Data (WISAARD) was used to assess the potential impacts to cultural and historic resources on and near the project. d. Proposed measures to avoid, minimize, or compensate for loss, changes to, and disturbance to resources. Please include plans for the above and any permits that map be required. No measures are anticipated. If an archeological site is found during the course of construction, the State Historic Preservation Officer will be notified. 14. TRANSPORTATION a. Identify public streets and highways serving the site or the geographic area, and describe proposed access to the existing street system. Show on site plans, if any. Access to the proposed project will be from 160th Avenue SE. © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 22 of 24 Renton, Washington b. Is the site or affected geographic area currently served by public transit? If so, generally describe. If not, what is the approximate distance to the nearest transit stop? The nearest public transit stop is approximately 0.30 miles southwest of the Site at the intersection of 156th Ave SE and SE 144th St. Bus route 111 provides access to bus route 114 and transfer points to many other routes to downtown Seattle. c. How many additional parking spaces would the completed project or non- project proposal have? How many would the project or proposal eliminate? The completed project will have garage and driveway parking spaces. Each home will have a minimum of two-parking spaces per lot. The project will eliminate all parking spaces associated with the removal of the gravel driveway. d. Will the Proposal require any new improvements to existing roads, streets, pedestrian, bicycle or state transportation facilities, not including driveways? If so, generally describe (indicate whether public or private). The proposal will improve the frontage of 160th Ave SE, add one internal road, and cul-de-sac. All are public rights of way. e. Will the project use (or occur in the immediate vicinity of) water, rail, or air transportation? If so, generally describe. No. f. How many vehicular trips per day would be generated by the completed project? If known, indicate when peak volumes would occur and what percentage of the © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 23 of 24 Renton, Washington volume would be trucks (such as commercial or nonpassenger vehicles). What data or transportation models were used to make these estimates? The project proposes 11 single-family homes. Assuming 9.52 vehicular trips per net unit per day, a total of 104.72 additional vehicle trips will be generated. Peak hours will generally be 7 AM – 9 AM and 4 PM – 6 PM. g. Will the proposal interfere with, affect or be affected by the movement of agricultural and forest products on roads or streets in the area? If so, generally describe. Not to our knowledge. h. Proposed measures to reduce or control transportation impacts, if any. None. 15. PUBLIC SERVICES a. Would the project result in an increased need for public services (for example: fire protection, police protection, health care, schools, other)? If so, generally describe. Yes, the proposal will result in an increase for those services typical of a residential development of this size and nature. The need for public services such as fire and police protection will be typical for a residential development of the size. School age children generated by this development will attend schools in Issaquah #411 School District. © 2018 D. R. STRONG Consulting Engineers Inc. Cedars at the Highlands SEPA Checklist Page 24 of 24 Renton, Washington b. Proposed measures to reduce or control direct impacts on public services, if any. In addition to payment of annual property taxes by homeowners, the proponent will mitigate the direct impacts of the proposal through the City’s traffic and school mitigation programs, if required. 16. UTILITIES a. Circle utilities currently available at the site: Electricity, natural gas, water, refuse service, telephone, sanitary sewer, septic system, other. b. Describe the utilities that are proposed for the project, the utility providing the service, and the general construction activities on the site or in the immediate vicinity which might be needed. Electricity: Puget Sound Energy Natural Gas: Puget Sound Energy Sewer & Water: City of Renton and King County Water District 90 Telephone: Century Link C. SIGNATURE The above answers are true and complete to the best of my knowledge. I understand the lead agency is re- lying on them to make its decision. Signature: Name of signee: Yoshio L. Piediscalzi, P.E. Position and Agency/Organization: Project Engineer, D.R. Strong Consulting Engineers, Inc. DATE SUBMITTED: ________________