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HomeMy WebLinkAboutSWP272266(4) � 0 7 - 0 O DEPARTMENT OF THE ARMY ,4 SEATTLE DISTRICT,CORPS OF ENGINEERS P.O. BOX 3755 SEATTLE,WASHINGTON 98124-3755 REPLY TO ATTENTION OF Regulatory Branch RECEIVED OCT - 9 2002 O City of Renton CITY UTILITY F RENT ON ATTN: Ronald Straka, P.E. Surface Water Utility 1055 South Grady Way Renton, Wahsington 98055 Reference: 2001-4-01275 Renton, City of Ladies and Gentlemen: You have proposed to place fill in wetlands located in the Lake Washington watershed near the City of Renton, King County, Washington(see attached drawing of wetlands). On September 10, 2002, we inspected the site and found these wetlands to be isolated. A recent U.S. Supreme Court ruling, Solid Waste Agency of Northern Cook County v. U.S. Army Corps of Engineers, No. 99-1178 (the SWANCC ruling), held that isolated wetlands that have no interstate commerce connection are not under the U.S. Army Corps of Engineers (Corps) regulatory jurisdiction. The isolated wetlands on the subject property do not have an interstate commerce connection and are not under Corps regulatory jurisdiction. You do not need a Corps permit to perform your proposed work. Other state and local regulations still apply to these wetlands. The Washington State Department of Ecology(Ecology) regulates isolated wetlands. Ecology's enclosed letter and Focus Sheet(enclosure 1) explain how Washington State regulates impacts to isolated wetlands. You should contact Ecology's Permit Assistance Center at(800) 917-0043 or ecypac@ecy.wa.gov for more information on how to obtain state approval for your project. We will be sending a copy of this letter to Ecology and to the Environmental Protection Agency's Aquatic Resources Unit. Finally, we consider our determination that your wetlands are isolated and not within our regulatory jurisdiction to be a final determination. This approved jurisdictional determination is valid for a period of 5 years from the date of this letter unless new information warrants revision of the determination. In certain circumstances, you have the right to appeal that determination. Enclosure 2 is a packet of information about our appeals process. -2- If you have any questions about this letter, or about our regulatory program in general, please contact Mr. Jim Green at telephone (206) 764-6906. Sincerely, p/ Tho as F. Mueller Chief, Regulatory Branch Enclosure P Q r ti r r7o�rl 1 m i P�In��� �� Y'�� 1km r port H�11's g y � t ��10Newcasf(e Goac'reek ,�' Ag MnUnt31 Re.RBI , .... ?'" h1 a C,r`e e kw N to Coatfi� P> (: xr Al aSt S9 128t fit _ r 1 zs) trl�ap.lµw.00d ��- _ 1 "I r Maple, d i q t'i� - nj �° - Elliott .rr t 1999 Ma quest.00M. Inc. 01 )99 Nav' atbn Tech no ba ia- 1\4 cif e� n •. 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NE DETENTION POND 0 20 40 60 // SURVEYED WETLAND MAP Scale In Feel /) FIGURE 3 NOTIFICATION OF ADMINISTRATIVE APPEAL OPTIONS AND PROCESS AND REQUEST FOR APPEAL Applicant: City ofRZle rna� k I n f tln See /e, rt<,, File Number: 2001-4-01275 Date: Attached is: See Section below INITIAL PROFFERED PERMIT (Standard Permit or Letter ofpermission) A PROFFERED PERMIT (Standard Permit or Letter of permission) B PERMIT DENIAL C X APPROVED JURISDICTIONAL DETERMINATION D PRELIMINARY JURISDICTIONAL DETERMINATION E SECTION I- The following identifies your rights�d options regarding an administrative appeal of the above decision. Additional information may be found at http://usace.army.mil/inet/functions/cw/cecwo/reg or Corps regulations at 33 CFR Part 331. A: INITIAL PROFFERED PERMIT: You may accept or object to the permit. • ACCEPT: If you received a Standard Permit,you may sign the permit document and return it to the district engineer for final authorization. If you received a Letter of Permission(LOP),you may accept the LOP and your work is authorized. Your signature on the Standard Permit or acceptance of the LOP means that you accept the permit in its entirety,and waive all rights to appeal the permit, including its terms and conditions,and approved jurisdictional determinations associated with the permit. • OBJECT: If you object to the permit(Standard or LOP)because of certain terms and conditions therein,you may request that the permit be modified accordingly. You must complete Section II of this form and return the form to the district engineer. Your objections must be received by the district engineer within 60 days of the date of this notice,or you will forfeit your right to appeal the permit in the future. Upon receipt of your letter,the district engineer will evaluate your objections and may: (a) modify the permit to address all of your concerns,(b)modify the permit to address some of your objections,or(c)not modify the permit having determined that the permit should be issued as previously written. After evaluating your objections,the district engineer will send you a proffered permit for your reconsideration,as indicated in Section B below. B: PROFFERED PERMIT: You may accept or appeal the permit • ACCEPT: If you received a Standard Permit,you may sign the permit document and return it to the district engineer for final authorization. If you received a Letter of Permission(LOP),you may accept the LOP and your work is authorized. Your signature on the Standard Permit or acceptance of the LOP means that you accept the permit in its entirety,and waive all rights to appeal the permit,including its terms and conditions,and approved jurisdictional determinations associated with the permit. • APPEAL: If you choose to decline the proffered permit(Standard or LOP)because of certain terms and conditions therein,you may appeal the declined permit under the Corps of Engineers Administrative Appeal Process by completing Section II of this form and sending the form to the division engineer. This form must be received by the division engineer within 60 days of the date of this notice. C: PERMIT DENIAL: You may appeal the denial of a permit under the Corps of Engineers Administrative Appeal Process by completing Section II of this form and sending the form to the division engineer. This form must be received by the division engineer within 60 days of the date of this notice. D: APPROVED JURISDICTIONAL DETERMINATION: You may accept or appeal the approved JD or provide new information. • ACCEPT: You do not need to notify the Corps to accept an approved JD. Failure to notify the Corps within 60 days of the date of this notice,means that you accept the approved JD in its entirety,and waive all rights to appeal the approved JD. • APPEAL: If you disagree with the approved JD,you may appeal the approved JD under the Corps of Engineers Administrative Appeal Process by completing Section II of this form and sending the form to the division engineer. This form must be received by the division engineer within 60 days of the date of this notice. E: PRELIMINARY JURISDICTIONAL DETERMINATION: You do not need to respond to the Corps regarding the preliminary JD. The Preliminary JD is not appealable. If you wish, you may request an approved JD (which may be appealed), by contacting the Corps district for further instruction. Also, you may provide new information for further consideration by the Corps to reevaluate the JD. SECTION II - REQUEST FOR APPEAL or OBJECTIONS TO AN INITIAL PROFFERED PERMIT REASONS FOR APPEAL OR OBJECTIONS: (Describe your reasons for appealing the decision or your objections to an initial proffered permit in clear concise statements. You may attach additional information to this form to clarify where your reasons or objections are addressed in the administrative record.) ADDITIONAL INFORMATION: The appeal is limited to a review of the administrative record,the Corps memorandum for the record of the appeal conference or meeting,and any supplemental information that the review officer has determined is needed to clarify the administrative record. Neither the appellant nor the Corps may add new information or analyses to the record. However, you may provide additional information to clarify the location of information that is already in the administrative record. POINT OF CONTACT FOR QUESTIONS OR INFORMATION: ., If you have questions regarding this decision and/or the appeal If you only have questions regarding the appeal process you may process you may contact: also contact: Jim Green,Project Manager Mores Bergman,Appeal Review Officer U.S.Army Corps of Engineers,Seattle District U.S.Army Corps of Engineers,Northwestern Division Post Office Box 3755 12565 West Center Road Seattle,Washington 98124-3755 Omaha,Nebraska 68144-3869 Telephone: (206)764-6906 Telephone: (402)697-2533 RIGHT OF ENTRY: Your signature below grants the right of entry to Corps of Engineers personnel,and any government consultants,to conduct investigations of the project site during the course of the appeal process. You will be provided a 15-day notice of any site investigation,and will have the opportunity to participate in all site investigations. Date: Telephone number: Signature of appellant or agent. NAO-RFA FORM F.doc 10 April 2000 Administrative Appeal Process for Approved Jurisdictional Determinations District issues approved 10 Jurisdictional Determination(JD) to applicant/landowner with NAO. Approved JD valid Does applicant/landowner for 5 years. Yes accept approved JD? No Max.60 days District makes new Applicant/landowner approved JD. 44 Yes provides new information? No Applicant decides to appeal approved JD. IF Applicant submits RFA to division engineer within 60 days of date of NAO. Corps reviews RFA and notifies Max.30 appellant within 30 days of receipt. days To continue with appeal process,appellant must revise RFA. No Is RFA acceptable? See Appendix D. Yes Optional JD Appeals Meeting and/or site investigation. Ilr RO reviews record and the division engineer Max.90 (or designee)renders a decision on the merits days of the appeal within 90 days of receipt of an acceptable RFA. Division engineer or designee remands decision to district, with specific instructions,for Does the appeal have merit? reconsideration;appeal 7Yesprocess completed. No istrict's decision is upheld; appeal process completed. Appendix C Process for Unacceptable Request for Appeal Division Engineer determines RFA is unacceptable. (From Appendix A) Is RFA complete? Yes No Review officer returns RFA for applicant to complete. Is revised RFA Does RFA meet No complete? Yes criteria? Yes No Division Engineer returns RFA to applicant to revise. Appeal process begins on date Does revised of receipt of RFA meet criteria acceptable for appeal? Yes RFA. (See Appendix A No for process.) Appeal process withdrawn. No further appeal is possible. Appendix D R OFO STATE OF WASHINGTON DEPARTMENT OF ECOLOGY P.O. Box 47600 • Olympia, Washington 98504-7600 (360) 407-6000 • TDD Only (Hearing Impaired) (360) 407-6006 August 21, 2001 RE: Isolated Wetlands Dear Interested Parties: A U.S. Supreme Court decision last January regarding how isolated wetlands are regulated by federal agencies has generated a lot of questions by landowners and developers. I wanted to let you know how this Court decision affects state regulations. The court ruled that the federal Clean Water Act does not apply to "isolated" wetlands where the only interstate-commerce connection is use by migratory birds. Isolated wetlands are those that are not adjacent or connected to a navigable water body, such as a river, lake or marine waters. However, they still perform the same important environmental functions as other wetlands, including recharging streams and aquifers, storing flood waters, filtering pollutants from water, and providing habitat for a host of plants and animals. Based on the Supreme Court's ruling, the U.S. Army Corps of Engineers no longer has regulatory oversight of most isolated wetlands—although a Corps permit is still required for isolated wetlands with other interstate-commerce use (e.g., recreation, industrial, etc.) and for wetlands that are connected to a navigable water body. However,the Supreme Court ruling did not change Washington state laws on wetlands. The state Clean Water Act makes no distinction between types of wetlands. All "waters of the state" are covered by the law, and that includes isolated wetlands. Additionally, isolated wetlands in Washington also are regulated under the state's Growth Management Act (GMA). Thus, most projects that affect isolated wetlands should be regulated by the applicable city or county. It's not always easy to tell if a wetland is isolated. Landowners who want to develop a wetland they believe is isolated should contact the Corps of Engineers and request a formal "jurisdictional determination" to avoid future legal problems and fines. The state Department of Ecology (Ecology) will continue regulating all wetlands— including isolated wetlands -- and applying the water quality standards called for in the state law. However, the department's process for reviewing projects involving isolated wetlands will now be different from the process for other types of wetlands. t.: colt } Isolated Wetlands August 21, 2001 Page 2 of 2 Instead of using the 401 Water Quality Certification process (triggered by a 404 permit from the Corps), Ecology will use administrative orders to regulate projects involving isolated wetlands. An administrative order is a written document that specifies what must be done to comply with the state water quality standards. The basic review standards will remain the same as with a 401 certification, but the process will be more streamlined, since federal agencies will not be involved in reviewing the projects. To seek an administrative order for a project that will affect isolated wetlands, landowners should contact the Permit Assistance Center at the Department of Ecology after receiving a written determination from the Corps that the wetland is, in fact, isolated. The phone number is 800-917-0043 or 360-407-7037, and the e-mail address is ecypac@ecy.wa.gov. More information is available on our web site at www.ecy.wa.gov/programs/sea/pac. If you have any questions or would like to discuss these issues in more detail please contact Andy McMillan on my staff at 360/407-7272 or anmc461 @ec.�wa_gov or contact me at 360/407-6977 or gwhi461 @ecy.wa.g_ov. Sincerely, Gordon White Program Manager Shorelands and Environmental Assistance Program Focus "swim W A SN IN6TDN STATE E`C O'LE0 G °Y Isolated Wetlands - Changes in the Regulatory Process Supreme Court Decision A U.S. Supreme Court decision last January regarding how wetlands are regulated has generated a lot of questions by landowners and developers. The court ruled that the federal Clean Water Act does not apply to those "isolated" wetlands where the only interstate commerce connection is use by migratory birds. This ruling overturned 15 years of regulation of isolated wetlands by the U.S. Army Corps of Engineers. While the court did not define the term "isolated," the Corps has previously considered isolated wetlands to be those that are not adjacent to or connected via surface water to a navigable water body, such as a river,lake or marine waters. Changes in Regulatory Process Based on the Supreme Court's ruling,federal agencies no longer have regulatory oversight of these important environmental resources. More specifically, landowners no longer need a permit from the U.S. Army Corps of Engineers to fill in most isolated wetlands -although a Corps permit is still required for isolated wetlands with other interstate commerce use (recreation, industrial,etc.) as well as wetlands that are connected to a navigable water body. However, the Supreme Court ruling did not change Washington state laws on wetlands. The state Clean Water Act (90.48 RCW) makes no distinction between types of wetlands. Rather, all "waters of the state" are covered by the law, and isolated wetlands are considered waters of the state. It's not always easy to tell if a wetland is isolated. Landowners who want to develop an isolated wetland should contact the Corps of Engineers and request a formal jurisdictional determination to avoid any future legal problems and fines. Why Regulate Isolated Wetlands? Isolated wetlands in Washington perform many of the same important environmental functions as other wetlands,including recharging streams and aquifers, storing flood waters,filtering pollutants from water,and providing habitat for a host of plants and animals. Many wildlife species,including amphibians and waterfowl, are particularly dependent on isolated wetlands for breeding and foraging. June 2001 Publication #00-06-020 AV State Process .;• Any project that calls for filling or altering a wetland determined by the Corps to be isolated will still be subject to regulation by the state. The state's process for reviewing projects that involve isolated wetlands will be different from the 401 Water Quality Certification process that is triggered by the Corps' 404 permit. Rather,Ecology will use administrative orders to regulate projects that will have impacts to isolated wetlands. The standards of review will remain the same as under 401 water-quality certifications - that is, the state water-quality standards for surface waters (WAC 173-201A). Anyone who wants more information about the review standards should obtain the following two publications: Water Quality Guidelines for Wetlands,Publication # 96-06; and How Ecology Regulates Wetlands, Publication # 97-112. These can be obtained by contacting Jean Witt at 360-407-7472 or jewi461@ecy.wa.gov. To seek an administrative order for a project that involves isolated wetlands, landowners should contact the Permit Assistance Center at the Department of Ecology, where our staff will guide you through the regulatory process. The phone number is 800-917-0043 or 360-407-7037, and the e-mail address is ecypac@ecy.wa.gov. GMA Regulations Additionally, applicants should be aware that isolated wetlands in Washington also are regulated under the state's Growth Management Act. Thus, projects with impacts to isolated wetlands typically will require approval from the applicable city or county. June 2001 Publication #01-06-020 �_. A cz� I _ 8M /o Z _ #t 1,0, o'y .sal-t ��, /c Yr v,t f° t -le _ U d 4� is 4 A p1'f rS F3! �-��- °2 CITY OF RENTON „LL s PlanningBuilding/PubhcWorks Department Jesse Tanner,Mayor Gregg Zimmerman P.E.,Administrator June 17, 2002 US Army Corps of Engineer Seattle District,Regulatory Branch Attn: Ann Uhrich P.O. Box 3755 Seattle, WA 98124-3755 SUBJECT: REVIEW STATUS—JURISDICTIONAL WETLAND DETERMINATION CORPS FILE#2001-01275 NE 10TH ST/ANACORTES AVE.NE STORMWATER SYSTEM IMPROVEMENT PROJECT,SWP-27-2266 Dear Ms.Uhrich: I am writing to request that you check the status of a project that we submitted to the Corps seven months ago. On November 1, 2001, our consultant, CH2M HILL, sent a letter requesting a jurisdictional wetland determination for a 0.07 acre isolated wetland located on a piece of property where we want to construct a stormwater detention pond. CH2M HILL considers the 0.07-acre Wetland B to be "isolated" because it is surrounded by uplands, does not have a direct natural surface connection to a navigable waterway, and is outside the 100-year floodplain. Along with the letter we sent a Wetland Delineation Report by a Professional Wetland Scientist. The letter and report are waiting review by a member of your staff, Jim Green. The project is in an area that has had flooding problems due to local stormwater runoff for at least the last 10 years. During more intense storms,water backs up out of the storm system flooding the streets, and has flooded the lowest adjacent homes on several occasions. We have been working with the residents and they expect the City to implement a solution to their problem. It is important to the City to eliminate the flooding problem so the streets are safe and useable, and people's homes are not flooded. We are planning to proceed with the preliminary design and local permitting this summer. We would like to have the wetland determination made so that we can continue with work on the project with a clear understanding of the permit requirements associated with the isolated wetland. I would appreciate your assistance in facilitating the U.S. Army Corps of Engineers Jurisdictional Determination regarding the 0.07 acre isolated wetland. This decision is important to the project and is needed for our project planning, budgeting, and overall schedule. Please let me know what your review schedule will be regarding our request. Thanks for your assistance. 1055 South Grady Way-Renton,Washington 98055 RE N T O N 0 This paper contains 50%recycled material,30%post consumer AHEAD OF THE CURVE 's. June 17, 2002 Page 2 If you have any questions please contact the City Project Manager, Daniel Carey, at 425-430-7293,or me at(425)430-7248. Sincerely, Ronald Straka,P.E., Engineering Supervisor Surface Water Utility cc: Jim Green—US ACE Lys Hornsby Daniel Carey Teresa Platin H:\Division.s\UTILITIE.S\DOCS\2002\2002-347.doc\DWC\tb 4P CH2M HILL n7108thAvenueNE RECEIVED Bellevue,WA ® NOV5 s 2001 9809 CH2MHfLL P.O. BOX Box 91500 CITY OF RENTON UTILITY SYSTEMS Bellevue,WA Sent Via Certified Mail 98009-2050 November 1,2001 Tel 425.453.5000 Fax 425.468.3100 167214.A2.12 U.S.Army Corps of Engineers,Seattle District,Regulatory Branch P.O. Box 3755 Seattle,WA 98124-3755 Subject: NE loth Street/Anacortes Avenue NE Stormwater System Improvement Project— Jurisdictional Wetland Determination Dear Jonathan: On behalf of the City of Renton Surface Water Utility,we would like to request the U.S. Army Corps of Engineers conduct a jurisdictional wetland determination for the project referenced above. The proposed project involves constructing a stormwater detention pond on a currently undeveloped property in the headwaters of a small,unnamed,intermittent tributary that drains to the upper part of Honey Creek.A 0.07-acre isolated wetland (Wetland B)would be permanently impacted by the proposed project.No other wetlands would be directly impacted by the project.Best management practices and erosion controls would be implemented to prevent construction-related impacts to Wetland C,which is located off site and immediately downstream from the project site. We have prepared a wetland delineation report that describes in detail the existing conditions for Wetlands B and C.We consider Wetland B to be "isolated"because it is surrounded by uplands,does not have a direct natural surface connection to a navigable waterway,and is outside the 100-year floodplain. The City of Renton has an option to purchase the subject property,which expires on December 15,2001. As a result,we ask that you conduct an expedited review of this project by November 15,2001,so the City can incorporate the results of your determination into its decision whether to purchase this property. Please call me at(425)453-5000 with any questions. Sincerely, Awl CH2M HILL Hans Ehlert/SEA Professional Wetland Scientist SEA/4-A322.doc/012980004 c: Daniel Carey,City of Renton Surface Water Utility Teresa Platin,Reid Adams,and Burt Miller/CH2M HILL II - S- o1 CH2M HILL RECEIVED 777 108th Avenue NE Bellevue,WA NOV 5 - 2001 98004-5118 CH2M H I LL P.O.Box 91500 CITY OF RENTON UTILITY SYSTEMS Bellevue,WA Sent Via Certified Mail 98009-2050 November 1, 2001 Tel 425.453.5000 Fax 425.468.3100 167214.A2.12 U.S. Army Corps of Engineers,Seattle District, Regulatory Branch P.O. Box 3755 Seattle, WA 98124-3755 Subject: NE loth Street/Anacortes Avenue NE Stormwater System Improvement Project— Jurisdictional Wetland Determination Dear Jonathan: On behalf of the City of Renton Surface Water Utility,we would like to request the U.S. Army Corps of Engineers conduct a jurisdictional wetland determination for the project referenced above. The proposed project involves constructing a stormwater detention pond on a currently undeveloped property in the headwaters of a small, unnamed, intermittent tributary that drains to the upper part of Honey Creek. A 0.07-acre isolated wetland (Wetland B)would be permanently impacted by the proposed project. No other wetlands would be directly impacted by the project. Best management practices and erosion controls would be implemented to prevent construction-related impacts to Wetland C,which is located off site and immediately downstream from the project site. We have prepared a wetland delineation report that describes in detail the existing conditions for Wetlands B and C. We consider Wetland B to be "isolated"because it is surrounded by uplands, does not have a direct natural surface connection to a navigable waterway, and is outside the 100-year floodplain. The City of Renton has an option to purchase the subject property,which expires on December 15, 2001. As a result,we ask that you conduct an expedited review of this project by November 15,2001, so the City can incorporate the results of your determination into its decision whether to purchase this property. Please call me at (425) 453-5000 with any questions. Sincerely, CH2M HILL Hans Ehlert/SEA Professional Wetland Scientist SEA/4-A322.doc/012980004 c: Daniel Carey, City of Renton Surface Water Utility Teresa Platin, Reid Adams, and Burt Miller/CH2M HILL STATE 3 - 12—0 3 a S �yy 1809�O STATE OF WASHINGTON DEPARTMENT OF ECOLOGY P.O. Box 47600 • Olympia, Washington 98504-7600 (360) 407-6000 • TDD Only (Hearing Impaired) (360) 407-6006 REGISTERED MAIL RECEIVED RR 809 647 831 US MAR 12 2003 March 5, 2003 ul_y OF RENT ry SYSTEMS Ronald J. Straka, Engineering Supervisor City of Renton 1055 South Grady Way Renton, WA 98055 Dear Mr. Straka: RE: Order No. DE 03SEAHQ-5367: Administrative Order for City of Renton Stormwater System Improvement Project resulting in placement of fill in 0.07 acres in King County Washington. The request for an administrative order for proposed work in wetlands in King County has been reviewed. The State of Washington has determined that the proposed work, as conditioned by the enclosed Order, will comply with applicable provisions of Chapter 90.48 RCW and other appropriate requirements of State law. This approval is subject to the conditions contained in the enclosed Order. If you have any questions, please contact Penny Kelley. Written comments can be sent to Penny Kelley at the Department of Ecology, P.O. Box 47600 or by e-mail at pkel461 @ecy.wa.gov. The enclosed Order may be appealed by following the procedures described in the Order. Sincerely, Brenden Farland Shorelands and Environmental Assistance Program Enclosure cc: Sarah Suggs, Department of Ecology, Northwest Region a DEPARTMENT OF ECOLOGY IN THE MATTER OF THE REQUEST BY ) City of Renton ) FOR AN ADMINISTRATIVE ORDER TO ) ORDER NO. DE 03SEAHQ-5367 CONDUCT WORK IN AN ISOLATED WETLAND ) To: Ronald Straka, Engineering Supervisor City of Renton 1055 South Grady Way Renton, WA 98055 This is an Administrative Order requiring City of Renton to comply with Chapter 90.48 RCW and the rules and regulations of the Department of Ecology(Ecology)by taking certain actions which are described below. RCW 90.48.120(1) authorizes Ecology to issue Administrative Orders requiring compliance whenever it determines that a person has violated or creates a substantial potential to violate any provision of Chapter 90.48 RCW. On December 16,2002, City of Renton submitted a request to impact 0.07 acres of an isolated wetland to construct a stormwater detention pond, construct new and replacement pipe systems for the pond and repair and upgrade parts of existing stormwater system in King county. For purposes of this Order,the term"Applicant"shall mean City of Renton and its agents,assigns, and contractors. In view of the foregoing and in accordance with RCW 90.48.120(1): IT IS ORDERED that City of Renton shall comply with the following: 1. City of Renton shall construct and operate the project in a manner consistent with the project description contained in Ecology Isolated Wetlands Information Sheet Supplemental Information dated December 11,2002 or as otherwise approved by Ecology. 2. City of Renton shall provide access to the project site upon request by Ecology. 3. This Order does not exempt and is provisional upon compliance with other statutes and codes administered by federal, state, and local agencies. 4. Copies of this Order shall be kept on the job site and readily available for reference by Ecology personnel, the construction superintendent, construction managers and foremen, and state and local government inspectors. 5. Nothing in this Order waives Ecology's authority to issue additional orders if Ecology determines further actions are necessary to implement the water quality laws of the state. Further,Ecology retains continuing jurisdiction to make modifications hereto through supplemental order, if additional impacts due to project construction or operation are identified(e.g., violations of water quality standards, downstream erosion, etc.), or if additional conditions are necessary to further protect the public interest. Failure to comply with this Order may result in the issuance of civil penalties or other actions,whether administrative or judicial,to enforce the terms of this Order. This Order may be appealed. Your appeal must be filed with the Pollution Control Hearings Board,P.O. Box 40903,Olympia,Washington 98504-0903 within thirty(30)days of your receipt of this Order. At the same time,your appeal must also be served on the Department of Ecology,c/o The Enforcement Officer,P.O.Box 47600, Olympia,Washington 98504-7600; and on the Department of Ecology, SEA Program,P.O.Box 47600,Washington 98504-7600. Your appeal alone will not stay the effectiveness of this Order. Stay requests must be submitted in accordance with RCW 43.21B.320. These procedures are consistent with Chapter 43.21B RCW. DATED this _day of <c 2003, at Olympia,Washington. IA den McFarland Se tion Manager Shorelands and Environmental Assistance Program 2- 12-o Z ;; CITY OF RENTON R Mayor Planning/Building/PublicWorks Department ' Jesse Tanner, Gregg Zimmerman P.E.,Administrator g December 12,2002 Department of Ecology SEA Program (Isolated Wetlands) P.O.Box 47600 1 Olympia, WA 98504-7600 SUBJECT: ISOLATED WETLANDS REVIEW FOR THE CITY OF RENTON SURFACE WATER UTILITY NE 10 TH ST/ANACORTES AVE DETENTION POND PROJECT REFERENCE: ARMY CORP DETERMINATION 2001-4-01275 RENTON, CITY OF Dear Mr. McFarland: Enclosed is the following information for your Isolated Wetland review and approval as requested in your November 20,2002, letter: • Ecology Isolated Wetland Information Sheet, • Supplemental Information by the City of Renton, • Wetlands Rating Field Data Form by CH2M-HILL, • Army Corps of Engineer Wetland Determination Ref: 2001-4-01275 • Wetland Delineation and Classification Report by CH2M HILL • 30 Percent Preliminary Design Plans for the Detention Pond and Storm System (4 plan sheets), As noted in your letter, the U.S. Army Corps of Engineers has determined that the on-site wetland is isolated, and no Federal permits from them are needed for the project. We have included a Supplemental Information summary to help describe the project. We are currently in the process of annexing the site into the City of Renton. When the site is annexed to the City of Renton we will be required to comply with the City Critical Areas Code requirements and permit conditions associated with any impacts to the on-site isolated wetland. If the site is not annexed into the City we will work with King County and their appropriate code and regulations for the wetland and appropriate permits. Because we would like to construct the project in the summer of 2003, we request an expeditious review of the isolated wetland. Please let us know what your review time line is and when we can expect a final decision. We would like to begin construction next summer(approx. June 2003) and time is vital for us to complete the project design and advertise it for bids. 1-Zile U . =12 17(f IR47 22661E 10th\01 Pond DPsign\ld n Fr In V PenmiA lml?n?> I Fi do�gwl �T 1055 South Grady Way-Renton,Washington 98055 � 1V 1 0 1V ®This paper contains 50%recycled material,30% AHEAD OF THE CURVE P P y post consumer If you have any questions about the project or need additional information please call Daniel Carey,Project Manager at 425-430-7293,or me at 425-430-7248. Sincerely, ,1 Ronald J. Strak , E.,Engineering Supervisor Surface Water Utility cc: Daniel Carey Hans Ehliert H:\File Sys\SWP-Surface Water\SWP-27(CIP)\27-2266 NE 10th\01-Pond Design\1400 Ecology Permit\021202 Ecology Final.doc\DWC\tb ��ti STATE 0,1, O � Y x y° 0 STATE OF WASHINGTON DEPARTMENT OF ECOLOGY P.O. Box 47600 • Olympia, Washington 98504-7600 (360) 407-6000 • TDD Only (Hearing Impaired) (360) 407-6006 Isolated Wetlands Information Sheet Please provide the information requested below and answer the following questions to the best of your ability. Attach any reports or documents that provide supporting information. This information will augment the information provided in the Joint Aquatic Resources Permit Application and will help expedite review of your project. You may need to contract with a qualified wetland consultant to help produce this information. Failure to provide this information may result in delays in review of your project. 1. Please provide a complete copy of a wetland delineation report including data sheets. Attached "Wetland Delineation and Classification Report for the NE 10th ST/Anacortes AVE NE Stormwater System Improvement Project" 2. What is the category of the wetland according to the Washington State Wetland Rating System (eastern or western Washington version as appropriate*)? Wetland B (on-site) is Category III. See attached Wetland Rating Field Data form by CH2M Hill. 3. Describe the Cowardin** vegetation classes in the wetland (i.e. emergent, scrub/shrub, forested, open water, etc.) and list the dominant plant species in each class. Cowardin class Dominant plant species Palustrine Emergent Carex obnupta (slough sedge) Seasonally Flooded (PEMC) 4 a. How large is the wetland (including contiguous portions offsite)? Wetland B (on-site) is 3,070 sf. Not contiguous with Wetland C (off-site) . b. How far is the wetland from the nearest surface water body? (lake, river, wetland, etc.) Approx. 175 ft. from Wetland C (off-site) . c. Is the wetland within a FEMA mapped 100-year floodplain? No. ie1 5. How much wetland area (in acres or square feet) is proposed to be: Filled? Excavated? 3,070 sf (all of Wetland B on—site) Drained? Flooded? Cleared, vegetation altered Other?(list) 6. Please provide copies of the following information if available: X Project plans, including grading plan See attached 'Detention Pond Plan, 30% Preliminary Design" . Erosion control and stormwater control plans,reports X Photographs of wetland See attached Appendix C in Wetland Delineation Report. X Wetland delineation report, including data sheets Same as above. X Wetland function assessment report Same as above. X Wetland category rating form See attached form. Wetland mitigation plan * Copies of the Washington State Wetland Rating Systems may be obtained from the Department of Ecology Publications Office at 360/407-7472 or jwit461(a,ecy.wa.gov. ** The "Cowardin" wetland classification system is synonymous with the "Classification of Wetlands and Deepwater Habitats of the United States" published by the US Fish and Wildlife Service. Daniel Carey 12/11/02 ECOLOGY ISOLATED WETLANDS INFORMATION SHEET SUPPLEMENTAL INFORMATION Prepared by City of Renton PROJECT INFORMATION Name: NE 10th St/Anacortes Ave NE Detention Pond and Storm System Improvement Project Owner: City of Renton Surface Water Utility 1055 South Grady Way Renton, WA 98055 Contact: Daniel Carey, City of Renton Surface Water Utility Phone: 425-430-7293 Fax: 425-430-7241 Location: The detention pond location is approximately 180 feet west of 13642 SE 116th St. The pipe improvements will be in the west 134 feet of SE 116th St where it connects to NE 10th St, NE 10th St, Anacortes Ave NE, NE 10th PL, NE 11th St, and part of Whitman CT NE. Parcel No: 1023059434 (detention pond property). Site Area: 1.125 acres (detention pond property). The detention pond property is unused open area covered with grass, shrubs, blackberries, and several large Maple trees on one corner. Current Zoning: Detention Pond Property in King County zoned R-6 (residential). Adjacent properties in King County zoned R-6. Adjacent properties in City of Renton zoned R-8 (residential). Construction Phasing: Construction is being planned for the summer of 2003. Project Description: The project involves constructing a detention pond to store stormwater runoff, constructing new and replacement stormwater pipe systems for the pond, and repairing and upgrading parts of the existing stormwater system. The purpose of the pond is to reduce the frequency and severity of flooding in NE 10th ST, Anacortes Ave. NE, and Anacortes CT NE due to upstream runoff, which originates in unincorporated King County. The stormwater detention pond will be located on a 1.12-acre parcel of undeveloped property currently located in King County, and owned by the City of Renton. Surface water runoff from the existing stormwater system in SE 116th ST will be directed into the detention pond, stored, and released at a slower rate into the existing stormwater system west of the site. HAFile Sys\SWP\SWP-27 CIP\27-2266 NE 10th ST\01 Pond Design\1400 Ecology Permits\021202 Ecol Suplmnt Final.doc\DWC\tb Page 1 JW Daniel Carey 12/11/02 The detention pond site contains a 3,070 sf Class 3 wetland. The wetland is proposed to be removed to construct the new detention pond. The U.S. Army Corps of Engineers has issued a wetland determination that the wetland is isolated and a Federal permit is not needed for construction (Ref: Army Corps Determination 2001-4-01275 Renton, City of). The detention pond will occupy about 110' x 270' feet (0.68 acres) of the site, and will be about 6 feet deep. On the east side of the pond, the cut will be about 15 feet deep because of the slope of the existing hillside. New stormwater pipes will be installed in SE 116th ST to direct flow into and out of the detention pond. The existing stormwater system in SE 116th ST, NE 10th ST, and Anacortes Ave NE will be replaced with a new system. The new system will connect from the new detention pond to part of the existing system in Anacortes Ave NE. From there, depending on the engineering design, the new system either will be constructed in NE 10th PL (Alternative 1), or up Anacortes Ave NE and NE 11th ST (Alternative 2). At the end of each Alternative the new system will connect into the existing stormwater system. The existing stormwater system consists of 8- to 18-inch stormwater pipes. The new system will consist of approximately 12- to 30-inch diameter pipes. New manholes and catch basins will be installed. The exact pipe size and location of the new system will be finalized after the design work is completed. Additional stormwater pipe improvements and maintenance repairs will occur in the City of Renton stormwater system. In Whitman CT NE, a section of the existing 18-inch diameter pipe system that was constructed as a siphon will be replaced with a new 30-inch diameter pipe. A section of the existing 18-inch pipe in an apartment building parking lot has problems with root intrusion and blockages. It will be replaced with new 24- to 30-inch pipe. Public Benefits: The project will provide several public benefits. The main benefit will be to reduce the duration of stormwater peak flow rates going to NE 10th ST, Anacortes Ave NE, and Anacortes CT NE. The lower duration flow rates should result in a reduction in the number and intensity of flooding events in those areas. That benefit should also occur in Honey Dew Creek and May Creek, which the stormwater system connects to. Lower duration peak flow rates can help reduce erosion and sediment, and can be a benefit for fish habitat. The detention pond may help improve water quality by providing some sediment settling and storage capability. Reducing the sediment flowing downstream will help keep the storm system cleaner, reducing maintenance needs and improving system capacity. The project may benefit Honey Dew Creek and May Creek by reducing sediment flowing to the creeks and thereby help improve fish habitat. The detention pond may help water quality by helping to contain any liquid spills that may occur in the streets upstream of it. The pond may aid in collecting and containing spills for cleanup, and help reduce potential impacts to the downstream storm system and creeks. HAFile Sys\SWP\SWP-27 CIP\27-2266 NE 10th ST\01 Pond Design\1400 Ecology Permits\021202 Ecol Suplmnt Final.doc\DWC\tb Page 2 emu. Daniel Carey 12/11/02 Local Wetland Permitting: The project will be subject to wetland review and permitting by the local government. Currently, the detention pond property is located in King County. The City of Renton is in the process of annexing the detention pond property into the City. City of Renton Critical Areas regulations allow Category 3 (same as class 3) wetlands less than 5,000 square feet (sf) to be exempt from the regulations. The exemption will allow the 3,070 sf Category 3 wetland to be removed to construct the new detention pond. Attached is a copy of the City of Renton Critical Areas regulations pertaining the wetland. Other Land Use permits or actions: 10/08/02 US Army Corps of Engineers Determination that onsite wetland is isolated and a Corps permit is not needed (copy attached). 10/24/02 SEPA application filed with City of Renton. 10/24/02 Request from City to King County for SEPA lead agency status (copy attached). 10/31/02 Letter from King County acknowledging City as SEPA lead agency (copy attached). 11/26/02 SEPA Determination of Non-Significance-Mitigated (DNS-M) issued by the City of Renton Environmental Review Committee. HAFile Sys\SWP\SWP-27 CIP\27-2266 NE 10th ST\01 Pond Design\1400 Ecology Permits\021202 Ecol Suplmnt Final.doc\DWC\tb Page 3 4-3-050A C/'\f y e.z fon N r 4-3-050 CRITICAL AREAS d. Minimize expenditure of public REGULATIONS: money and costly flood control projects; and A. PURPOSE: e. Minimize the need for rescue and re- 1. General: The purposes of this section lief efforts associated with flooding and are to: generally undertaken at the expense of the general public; and a. Manage development activities to protect life, property, and environmental f. Minimize damage to public facilities quality; and and utilities such as water and gas mains, electric, telephone and sewer b. Assist or further the implementation lines, streets, and bridges located in ar- of the policies of the Growth Manage- eas of special flood hazard;and ment Act,the State Environmental Policy g. Help maintain a stable tax base by Act, chapter 43.21 C RCW, City Compre- providing for the sound use and develop- hensive Plan, and its implementing regu- ment of areas of special flood hazard so lations. as to minimize future flood blight areas; 2. Aquifer Protection:The overall purpose and of the aquifer protection regulations is to pro- tect aquifers used as potable water supply h. Ensure that those who occupy the ar- sources by the City from contamination by eas of special flood hazard assume re- hazardous materials.Other specific purposes sponsibility for their actions. include: 4. Geologic Hazards:The purposes of the a. Protect the groundwater resources of geologic hazard regulations are to: the City. a. Minimize damage due to landslide, b. Provide a means of regulating spe- subsidence or erosion through the con- cific land uses within aquifer protection trol of development; and areas. b. Protect the public against avoidable c. Provide a means of establishing safe losses due to maintenance and replace- construction practices for projects built ment of public facilities, property dam- within an aquifer protection area. age, subsidy cost of public mitigation of avoidable impacts, and costs for public d. Protect the City's drinking water sup- emergency rescue and relief operations; ply from impacts by facilities that store, and handle,treat, use, or produce sub- . stances that pose a hazard to groundwa- c. Reduce the risks to the City and its ter quality. (Amd.Ord.4851, 8-7-2000) citizens from development occurring on unstable slopes; and 3. Flood Hazards: It is the purpose of the d. Control erosion and sediment run-off flood hazard regulations to: from development. a. Promote the public health, safety, 5. Habitat Conservation:The primary pur- and general welfare; and pose of habitat conservation regulations is to b. Minimize public and private losses minimize impacts to critical habitats and to re- due to flood conditions in specific areas; store and enhance degraded or lower quality and habitat in order to: c. Protect human life and health; and a. Maintain and promote diversity of species and habitat within the City;and (Revised 10/00) 3 - 10 4-3-050B v b. Coordinate habitat protection with public or private development proposals; the City's open space system,whenever and possible,to maintain and provide habitat connections; and f. Prevent the loss of wetland acreage and functions and strive for a net gain c. Help maintain air and water quality, over present conditions. and control erosion; and B. APPLICABILITY—CRITICAL AREAS d. Serve as areas for recreation,educa- DESIGNATIONS/MAPPING: tion,scientific study,and aesthetic appre- ciation. 1. Lands to Which These Regulations Apply:The following critical areas,classified 6. Shorelines,Streams and Lakes: (Re- in subsections B2 through B7 of this Section, served) are regulated by this section: 7. Wetlands:The purposes of the wetland a. Aquifer Protection Areas.(Amd.Ord. regulations are to: 4851, 8-7-2000) a. Ensure that activities in or affecting b. Areas of Special Flood Hazard. wetlands not threaten public safety, cause nuisances, or destroy or degrade c. Sensitive Slopes,twenty five percent natural wetland functions and values;and (25%)to forty percent(40%) and Pro- tected Slopes,forty percent(40%) or b. Protect the public health, safety and greater. welfare by minimizing and managing the adverse environmental impacts of devel- d. Medium, High, and Very High Land- opment within and adjacent to wetlands; slide Hazard Areas. and e. High Erosion Hazards. c. Preserve, protect and restore wet- lands by regulating development within f. High Seismic Hazards. them and around them; and g. Medium and High Coal Mine Haz- d. Protect the public from: ards. i. Preventable maintenance and re- h. Critical Habitats. placement of public facilities needed when wetland functioning is im- i. Shorelines, Streams and Lakes. (Re- paired; and served) ii. Costs associated with repair of j. Wetlands, Categories 1, 2 and 3. downstream properties resulting from erosion and flooding due to the 2. Aquifer Protection: loss of water storage capacity pro- vided by wetlands; and a. Applicability:The aquifer protection regulations apply to uses, activities, and iii. Unnecessary costs for public facilities located within an aquifer protec- emergency rescue and relief opera- tion area(APA) as classified below. lions; and b. Aquifer Protection Area (APA): iv. Potential litigation on improper Aquifer protection areas are the portion construction practices occurring in of an aquifer within the zone of capture wetland areas; and and recharge area for a well or well field owned or operated by the City, as de- e. Provide City officials with information fined in subsection O of this Section, to evaluate, approve, condition or deny Maps. 3 - 11 (Revised 10/00) 4-3-050B gently dipping seams. These areas c. Mapping: may be affected by subsidence. i_ Critical habitats are identified by iii. High Coal Mine Hazard (CH): lists, categories and definitions of y Areas with abandoned and improp- species promulgated by the Wash- erly sealed mine openings and areas ington State Department of Fish and underlain by mine workings shal- Wildlife (Non-game Data System lower than two hundred feet(200') in Special Animal Species)as identified depth for steeply dipping seams, or in WAC 232-12-011; in the Priority shallower than fifteen (15) times the Habitat and Species Program of the thickness of the seam or workings for Washington State Department of gently dipping seams. These areas Fish and Wildlife;or by rules and reg- may be affected by collapse or other ulations adopted currently or hereaf- subsidence. ter by the U.S. Fish and Wildlife Service. g. Mapping: Maps of steep slopes, landslide, erosion, seismic, and coal ii. Referenced inventories and mine hazards are documented and in- maps are to be used as guides to the cluded in subsection Q of this Section, general location and extent of critical Maps.The actual presence or absence of habitat. Critical habitat which is iden- the criteria listed above, as determined tified in subsection 135b of this Sec- by qualified professionals, shall govern tion,but not shown on the referenced the treatment of an individual building site inventories and maps,are presumed or parcel of land requiring compliance to exist in the City and are also pro- with these regulations. tected under all the provisions of this section. 5. Habitat Conservation: iii. The actual presence or absence a. Applicability: The habitat conserva- of the criteria listed above as deter- tion regulations apply to all nonexempt mined by qualified professionals, activities on sites containing or abutting shall govern the treatment of an indi- critical habitat as classified below. vidual building site or parcel of land requiring compliance with these reg- b. Critical Habitat:Critical habitats are ulations. those habitat areas which meet any of the following criteria: 6. Shorelines, Streams and Lakes: (Re- served) i. The documented presence of species proposed or listed by the fed- a. Applicability: (Reserved) eral government or State of Wash- ington as endangered, threatened, b. Definitions: (Reserved) sensitive, monitor, or priority; and/or c. Mapping: (Reserved) ii. The presence of heron rookeries or raptor nesting areas;and/or 7. Wetlands: iii. Category 1 wetlands (refer to a. Applicability:The wetland regula- subsection 67b(i) of this Section for tions apply to sites containing or abutting classification criteria);and/or wetlands as described below.Category 2 wetlands, less than two thousand two iv. Portions of streams and their hundred (2,200) square feet in area,and shorelines designated in the Renton Category 3 wetlands, less than five thou- Shoreline Master Program, RMC sand (5,000) square feet in area, are ex- 4-3-090, as Conservancy or Natural empt from these regulations. (Amd. Ord. `. (refer to the Renton Shoreline Master 4851, 8-7-2000) Program). (Revised 10/00) 3 - 14 4-3-050B b. Classification System: The follow- (b) Wetlands that have heron ing classification system is hereby rookeries or raptor nesting trees, adopted for the purposes of regulating but are not Category 1 wetlands; wetlands in the City. Wetlands buffer and/or widths, replacement ratios and avoid- ance criteria shall be based on the follow- (c) Wetlands of any size lo- ing rating system: cated at the headwaters of a wa- tercourse,but are not Category 1 i. Category 1,Very High Quality wetlands; and/or Wetlands: Category 1 wetlands are wetlands which meet one or more of (d) Wetlands assigned the Sig- the following criteria: nificant#2 rating in the current King County Wetlands Inventory (a) The presence of species 1991 or as thereafter amended; listed by Federal or State gov- and/or ernment as endangered or threatened, or the presence of (e) Wetlands having minimum essential habitat for those spe- existing evidence of human re- cies; and/or lated physical alteration such as diking, ditching or channeliza- (b) Wetlands having forty per- tion. cent (40%) to sixty percent (60%)permanent open water(in iii. Category 3, Lower Quality dispersed patches or otherwise) Wetlands: Category 3 wetlands are with two (2) or more vegetation wetlands greater than five thousand classes; and/or (5,000) square feet which meet one or more of the following criteria: (c) Wetlands equal to or greater than ten (10) acres in (a) Wetlands that are severely size and having three(3)or more disturbed. Severely disturbed vegetation classes,one of which wetlands are wetlands which is open water;and/or meet the following criteria: (d) The presence of plant asso- • Are characterized by hydro- ciations of infrequent occur- logic isolation, human-related rence;or at the geographic limits hydrologic alterations such as of their occurrence; and/or diking, ditching, channelization and/or outlet modification; and (e) Wetlands assigned the Unique/Outstanding#1 rating in Have soils alterations such as the current King County Wet- the presence of fill, soil removal lands Inventory 1991 or as there- and/or compaction of soils;and after amended. • May have altered vegetation. ii. Category 2, High Quality Wet- lands: Category 2 wetlands are wet- (b) Wetlands that are newly lands greater than two thousand two emerging. Newly emerging wet- hundred (2,200)square feet which lands are: meet one or more of the following cri- teria: Wetlands occurring on top of fill materials;and (a) Wetlands greater than two thousand two hundred (2,200) Characterized by emergent square feet that are not Category vegetation, low plant species 1 or 3 wetlands; and/or richness and used minimally by wildlife. These wetlands are gen- 3 - 15 (Revised 10100) 4-3-050C erally found in the areas such as C. APPLICABILITY— EXEMPT, the Green River Valley and Black PROHIBITED AND NONCONFORMING River Drainage Basin. ACTIVITIES: (c) All other wetlands not clas- 1. Applicability: Unless determined to be sified as Category 1 or 2 such as exempt from permitting and standards, all smaller, high quality wetlands. proposed development, fill, and activities in regulated critical areas and their buffers shall c. Maps and Inventory: comply with the requirements of this Section. Expansion or alteration of existing activities i. The approximate location and ex- shall also comply with the requirements of tent of wetlands in the City is dis- this Section. Any person seeking to deter- played in subsection Q of this mine whether a proposed activity or land area Section, Maps. The map is to be is subject to this Section may request in writ- used as a guide to the general loca- ing a determination from the City. Such a re- tion and extent of wetlands. quest for determination shall contain the information requirements specified by the ii. Wetlands which are defined in Department Administrator. subsection B7b of this Section, Clas- sification System, but not shown on a. Aquifer Protection Areas—Com- the Renton Wetlands Map Inventory, pliance with Regulations:The following are presumed to exist in the City and developments, facilities, uses and activi- are also protected under all the provi- ties shall comply with the applicable ero- sions of this section. visions and restrictions of this Section and chapters 4-6 and 4-9 RMC for the iii. The actual presence or absence APA zone in which the developments,fa- of the wetland criteria listed above, cilities, uses and activities are located, as determined by qualified profes- except as preempted by Federal or State sionals,shall govern the treatment of law: . an individual building site or parcel of land requiring compliance with these i. Development Permits: Devel- regulations. opment permits shall be reviewed for compliance with the aquifer protec- d. Delineation of Wetland Edge: For tion requirements of this Section. the purpose of regulation, the wetland edge should be delineated pursuant to ii. Facilities: Facilities, as defined subsection M4 of this Section. in RMC 4-11-060, Definitions F, which are existing, new, or to be e. Regulated and Nonregulated Wet- closed are subject to this Section as lands: Refer to subsection M1 a and M1 b specified below: of this Section for applicability thresholds for regulatory and nonregulatory wet- (a) Existing Facilities:All lands. owners of facilities which store, handle, treat, use, or produce 8. Mapping—General: The exact bound- hazardous materials or have ary of each critical area depicted on maps ref- done so in the past, must comply erenced herein is approximate and is with the permit requirements, re- intended only to provide an indication of the lease reporting requirements, presence of a critical area on a particular site. and closure requirements as set Additional critical areas may be present on a forth in this Section; site.The actual presence of critical areas and the applicability of these regulations shall be (b) Existing Facilities—Limi- based upon the classification criteria for each tation on Material Increase: In critical area. (Ord. 4851, 8-7-2000) Zone 1 of an APA, no change in operations at a facility shall be al- (Revised 10/00) 3 - 1 6 4-3-050C treated, used or produced; and the po- exemption is a wetland below the tential for the land use, activity, or busi- size thresholds pursuant to subsec- ness to degrade groundwater quality. tion C5f(i) and C5f(ii). 4. Letter of Exemption: iv. If a hazardous material, ae and/or facility that is exempt pe a. When Required: ant to this Section has a signific substantial potential to degrade i. Aquifer Protection, Flood Haz- groundwater quality,then the E ards,Geologic Hazards, Habitat partment Administrator may ree Conservation,Wetlands:Except in compliance with the aquifer protec- the case of public emergencies, all tion requirements of this Section oth- exemptions in subsections C5, C6 erwise relevant to that hazardous and C7 of this Section require that a material,activity,and/or facility.Such letter of exemption be obtained from determinations will be based upon the Department Administrator prior to site and/or chemical-specific data. construction or initiation of activities. 5. Specific Exemptions—Critical Areas ii. Shorelines, Streams and and Buffers: Specific exempt activities are Lakes: (Reserved) listed in the following table. If an"X"appears in a box, the listed exemption applies in the b. Applicability of Section Require- specified critical area and required buffer. If ments to Exempt Activities: Exempt an"X"does not appear in a box, then the ex- activities provided with a letter of exemp- emption does not apply in the particular criti- tion may intrude into the critical area or cal area or required buffer. Where utilized in required buffer subject to any listed con- the following table the term "restoration" ditions or requirements.Exempt activities means returning the subject area back to its do not need to comply with mitigation ra- original state prior to the performance of the tios of subsection M11 of this Section, exempt activity. Activities taking place in crit- Wetlands Creation and Restoration, or ical areas and their associated buffers and subsection M12 of this Section, Wetland listed in the following table are exempt from Enhancement,unless required in exemp- the applicable provisions of this Section, pro- tion criteria.A critical areas report,and/or vided a letter of exemption has been issued enhancement or mitigation plan shall be per subsection C4 of this Section, Letter of required,unless otherwise waived by the Exemption. Whether the exempted activities Department Administrator. are also exempt from permits will be deter- mined based upon application of chapters c. Administrator Findings: In deter- 4-8 and 4-9 RMC, or other applicable sec- mining whether to issue a letter of ex- tions of the Renton Municipal Code. emption for activities listed in subsections C5, C6, and C7 of this Section,the Ad- ministrator shall find that: i. The activity is not prohibited by this or any other chapter of the RMC or State or Federal law or regulation; ii. The activity will be conducted us- ing best management practices as specified by industry standards or applicable Federal agencies or sci- entific principles; iii. Impacts are minimized and, where applicable, disturbed areas are immediately restored, unless the 3 - 1 g (Revised 10/00) 4-3-050C Shorelines/ Aquifer Flood Geologic Habitat Streams/ Protection Hazard Hazard Conservation Lakes EXEMPT ACTIVITY Area Area Area Area (Reserved) Wetlands e. Roads,Parks,Public and Private Utilities:jContineed v. Vegetation Manage me nt/E ssential Tree X X X X Removal for Public or Private Utilities, Roads, and Public Parks: Maintenance activities, including routine vegetation management and essential tree removal, for public and private utilities,road rights-of-way and easements and parks x6Weta isturb `ce,Mod!!Y9 Pony nd : �tr i. Any Activity in Small Category 2 Wetland: X Any activity affecting a single,hydrologically isolated Category 2 wetland no greater than two thousand two hundred (2,200)square feet. ii. Any Activity in Small Category 3 Wetlands: X Any activity affecting hydrologically isolated Category 3 wetland no greater than five thou- sand (5,000) square feet. iii. Temporary Wetland Impacts:Temporary X X disturbances of a wetland due to construction activities that do not include permanent filling may be permitted;provided,that there are no permanent adverse impacts to the critical area or required buffer, and areas temporarily dis- turbed are restored at a 1:1 ratio. Category 1 wetlands and Category 2 forested wetlands shall be enhanced at a 2:1 ratio in addition to being restored. For habitat conservation areas, this exemption applies only to Category 1 wet- lands. : tdtetrr �ancons#ruct�an� sting ses �. .f=. : . i. Remodeling, Replacing, Removing Existing X X X Structures, Facilities, and Improvements: Remodeling, restoring, replacing or removing structures,facilities and other improvements in existence on the date this section becomes effective and that do not meet the setback or buffer requirements of this section provided the work complies with the criteria in RMC 4-10-010G, Nonconforming Activities. If a hazardous material,activity,and/or facility that is exempt pursuant to this Section has a significant or substantial potential to degrade groundwater quality,then the Department Administrator may require compliance with the aquifer protection requirements of this Section otherwise relevant to that hazardous material activity and/or facility. 3 - 20.3 (Revised 10/00) Wetlands Rating Field Data Form Background Information: Name of Rater: 461J$ F7-f AfIiiIiation: Cf(2,y;-) �-h t,,-- pate: 1t 2-7 0Z Name of wetland(if known): VJ6_T'L-4r`1- Government Jurisdiction of wetland: V-44 G C00JI"f 6-0c k"A. IF !l*jOE�ct-b Location: 1/4 Section: of 1/4 S: Section: 10 Township:u N Range: 05 E Sources of Information: (Check all sources that apply) Site visit: ✓USGS Topo Map: ✓ NWI map: l'Aerial Photo: _Soils survey: Other: ✓Describe: M q� tAe-GrX C_Vpge�% Aw)h Kj�% RiFto A;r` C 50STM t. hLeCrLE& 14'9 When The Field Data form is complete enter Category here: �] Q.1. High Quality Natural Wetland Circle Answers Answer this question if you have adequate information or experience to do so. If not find someone with the expertise to answer the questions. Then, if the answer to questions la, lb and lc are all NO, contact the Natural Heritage program of DNR. la.Human caused disturbances. Is there significant evidence of human-caused changes to topography or hydrology of the wetland as indicated by any of the following conditions? Consider only changes that may have taken place in the last_S decades. The impacts of changes done earlier have probably been stabilized and the wetland ecosystem will be close to reaching some new equilibrium that may represent a high quality wetland. 1 al. Upstream watershed I %impervious. es go to Q 2 1a2. Wetland is ditched and water ow is n Yes: go to Q.2 Ia3. Wetland has been graded, fille ggcd. c�PJ es: go to Q.2 1a4. Water in wetland is controlled by i es, weirs,etc. Yes: go to Q.2 1a5. Wetland is grazed. Yes:go to Q.2 Ia6. Other indicators of disturbance(list below) Yes:go to Q.2 No: go to Ib. 25 f lb Are there populations of non-native plants which are currently present, YES:go to Q.2 cover more than 10%of the wetland, and appear to be invading native No: go to lc. populations? Briefly describe any non-native plant populations and Information source(s): lc. Is there evidence of human-caused disturbances which have visibly YES: go to Q.2 degraded water quality. Evidence of the degradation of water quality NO:Possible Cat. I include: direct(untreated)runoff from roads or parking lots; presence, contact DNR or historic evidence,of waste dumps;oily sheens; the smell of organic chemicals;or lifestock use. Briefly describe: 0.2. Irreplaceable Ecological Functions: Dees the wetland: (NO to all: go to Q.3) ® have at least 1/4 acre of organic soils deeper than 16 inches Y go to 2a and the wedand is relatively undisturbed;OR [IIf the answer is NO because the wetland is disturbed briefly describe: Indicators of disturbance may include: -Wetland has been graded,filled,logged; - Organic soils on the surface are dried-out for more than half of the year; -Wetland receives direct stormwater runoff from urban or agricultural areas.]; OR ® have a forested class greater than 1 acre; YES: Go to 2b OR ® have characteristics of an estuarine system; YES: Go to 2c OR ® have eel grass,floating or non-floating kelp beds? YES: Go to 2d 2a. Bogs and Fens Are any of the three following conditions met for the area of organic soil? 2a.1. Are Sphagnum mosses a common ground cover(>M)and the cover of invasive species(see Table 3)is less than 10%? Is the area of sphagnum mosses and deep organic soils> 12 acre? YES: Category I Is the area of sphagnum mosses and deep organic soils 1/4-1/2 acre? YES: Category II NO: Go to 2a.3 2a.2. Is there an area of organic soil which has an emergent class with at least one species from Table 2, and cover of invasive species is< 10% (see Table 3)'. Is the area of herbaceous plants and deep organic soils> 1/2 acre? YES: Category I Is the area of herbaceous plants and deep organic soils 1/4-1/2 acre'? YES: Category 11 NO: Go to 2a.3 26 w 2a.3. Is the vegetation a mixture of only herbaceous plants and Sphagnum mosses with no scrub/shrub or forested classes? Is the area of herbaceous plants,Sphagnum, and deep organic soils> 1/2 acre? YES: Category I . Is the area of herbaceous plants,Sphagnum, and deep organic soils 1/4-1/2 acre? YES: Category II NO: Go to Q.3. Q.2b. Mature forested wetland. 2b.1. Does 50%of the cover of upper forest canopy consist of evergreen YES: Category I trees older than 80 years or deciduous trees older than 50 years? NO: Go to 2b.2 Note:The size of trees is often not a measure of age, and size cannot be used as a surrogate for age(see guidance). 2b.2. Does 50% of the cover of forest canopy consist of evergreen trees older YES: Go to 2b.3 than 50 years, AND is the structural diversity of the forest high as NO: Go to Q.3 characterized by an additional layer of trees 20'-49' tall, shrubs 6'- 20', tall, and a herbaceous groundcover? 2b.3. Does <25%of the areal cover in the herbaceous/groundcover or YES:Category I the shrub layer consist of invasive/exotic plant species from the list on p. 19? NO: Go to Q.3 Q.2c. Estuarine wetlands. 2cl. Is the wetland listed as National Wildlife Refuge, National Park, YES: Category I National Estuary Reserve,Natural Area Preserve,State Park, or NO: Go to 2c.2 Educational,Environmental or Scientific Reserves designated under WAC 332-30-151?. . . . . 2c.2. Is the wetland>5 acres; . . . . . . . . . . . . . . . . . . . . . . . . . . . . YES: Category I Note: If an area contains patches of salt tolerant vegetation that are 1)less than 600 feet apart and that are separated by mudflats that go dry on a Mean Low Tide,or 2)separated by tidal channels that are less than 100 feet wide; all the vegetated areas are to be considered together in calculating the wetland area. or is the wetland 1-5 acres; . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . YES: Go to 2c.3 or is the wetland< 1 acre?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . YES: Go to 2c.4 27 2c.3. Does the wetland meet at least 3 of the following 4 criteria: . . . . . . . . YES: Category I NO: Category II -minimum existing evidence of human related disturbance such as diking,ditching, filling,cultivation,grazing or the presence of non- native plant species(see guidance for definition); -surface water connection with tidal saltwater or tidal freshwater; - at least 75%of the wetland has a 100'buffer of ungrazed pasture, open water, shrub or forest; -has at least 3 of the following features: low marsh;high marsh;tidal channels; lagoon(s);woody debris; or contiguous freshwater wetland. 2c.4. Does the wetland meet all of the four criteria under 20. (above)?. . YES: Category II NO:Category III Q.2d. Eel Grass and Kelp Beds. 2d.1. Are eel grass beds present'?. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . YES:Category I NO: go to 2d.2 2d.2. Are there floating or non-floating kelp bed(s)present with greater than YES: Category I 50% macro algal cover in the month of August or September?. . . . . . . . . NO: Category II Q.3. Category IV wetlands. 3a. Is the wetland:less than I acre ilk, hydrologically isolated and, comprised of one vegetated class that is dominated(> 80% areal cover) YES:Category IV by one species from Table 3 (page 19)or Table 4(page 20) (!EO..)o to 3b 3b. Is the wetland: less than two acres and,hydrologically isolated, with one vegetated class, and>909'0 of areal cover is any combination of YES:Category IV species from Table 3 (page 19) _ (�v.�/ o to 3c 3c. Is the wetland excavated from upland ad a pond smaller than 1 acre :Category IV without a surface water connection to streams, lakes,rivers,or other NO:go to Q.4 wetland, and has<0.1 acre of vegetation. 28 QA Significant habitat value. Answer all questions and enter data requested. Circle scores that qualify 4a. Total wetland area acres ! ilm Estimate area, select from choices in the near-right column, and score in the >200 6 far column: 40- 2M 5 xo4- 10-40 4 Enter acreage of wetland here: acres, and source: z✓E Y 5 - 10 3 1 -5 2 tl.l - I I <t1.1 0 4b. Wetland classes: Circle the wetland classes below that qualify: Open Water: if the area of open water is> 1/4 acre Aquatic Beds: if the area of aquatic beds> 1/4 acre, I Emergent: if the area of emergent class is> 1/4 acre, C ct #of classes Points Scrub-Shrub: if the area of scrub-shrub class is> 1/4 acre, 2 . . . . . . . 3 3 . . . . . . . 6 Forested: if area of forested class is> 1/4 acre, 4. . . . . . . 8 5 . . . . . . .10 Add the number of wetland classes, above, that qualify, and then score according to the columns at right. e.g. If there are 4 classes(aquatic beds,open water,emergent & scrub-shrub), you would circle 8 points in the far right column. 4c. Plant species diversity. For each wetland class(at right)that qualifies in clisa #species in class Paints 4b above,count the number of different plant species Aquatic Bed 1 0 you can find that cover more than 5%of the ground. 2 1 You do not have to name them. 3 2 >3 3 Score in column at far right: e.g. If a wetland has an aquatic bed class with 3 species, Emergent 1 0 an emergent class with 4 species and a scrub-shrub 2-3 1 class with 2 species you would circle 2, 2, and I in the -5 2 far column. >5 3 Note:Any plant species with a cover of>5% qualifies for points within a class,even those Scrub-Shrub 1 0 that are not of that class. 2 1 3-4 2 >4 3 Forested 1 0 2 1 3-4 2 >4 3 29 4d. Structural diversity. If the wetland has a forested class,add I point if each of the following _ classes is present within the forested class and is larger than 1/4 acre. -trees>50' tall . . . . . . . . . . . . . . . . . . . . . YES - I -trees 20'-.49'tall . . . . . . . . . . . . . . . . . . . YES - 1 -shrubs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . YES - I -herbaceous ground cover. . . . . . . . . . . . . Also add I point if there is any"open water"or"aquatic bed"class immediately next to the forested area(ie. there is no scrub/shrub or emergent vegetation between them). YES - I 4e. Decide from the diagrams below whether interspersion between High- 5 wetland classes is high,moderate,low or none? If you think the Moderate - 3 amount of interspersion falls in between the diagrams score accordingly Low- (i.e. it moderately high amount of insterspersion would score it 4, one- 0 while a moderately low amount would score a 2) ............. ......... ................ ............ ............... ............. .............. .............. .............. ............... .............. .............. ............. ....I........ ............ ............ ........... ..,........ ............ ........ .......... none low Iow . , , . . , , , , moderate moderate high 4f. Habitat features. Answer questions below, circle features that apply, and score to right: Is there evidence that the open or standing water was caused by beavers YES= 2 Is a heron rookery located within 300'? YES= 1 Are raptor nest/s located within 300'? YES= 1 Are there at least 3 standing dead trees(snags)per acre greater than 10" in diameter at "breast height"(DBH)?. YES = I Are there at least 3 downed logs per acre with a diameter > 6" for at least 10' in length? YES = 1 Arc there areas (vegetated or unvcgetated) within the wetland that are ponded'for at least 4 months out of the year, and the wetland has not qualified as having an open water class in Question 4b. ? YES = 2 30 4g. Connection to streams. (Score one answer only.) 4g.1. Does the wetland provide habitat for fish at any time of the year AND does it have a perennial surface water connection to a fish bearing stream. YES=0 4g.2 Does the wetland provide fish habitat seasonally AND does it have a seasonal surface water connection to a fish bearing stream. YES=4 4g.3 Does the wetland function to export organic matter through a surface water connection at all times of the year to a perennial stream. YES=4 4g.4 Does the wetland function to export organic matter through a surface water connection to a stream on a seasonal basis? YES=2 4h.Buffers. Score the existing buffers on a scale of 1-5 based on the following four descriptions. If the condition of the buffers do not exactly match the description, score either.a point higher or lower depending on whether the buffers are less or more degraded. Forest,scrub, native grassland or open water buffers are present for more than 100'around 95%of the circumference. Score=5 Forest, scrub, native grassland,or open water buffers wider than MY for more than _/2 of the wetland circumference,or a forest,scrub, grasslands,or open water buffers for more than 50'around 95%of the circumference. Score= 3 Forest,scrub, native grassland, or open water buffers wider than IM' for more than 1/4 of the wetland circumference,or a forest,scrub, native grassland, or open water buffers wider than 50' for more than 1/2 of the wetland circumference. Score=2 No roads, buildings or paved areas within IW'of the wetland for snore than 95%of the wetland circumference. Score= 2 No roads,buildings or paved areas within 25'of the wetland for more than 95% of the circumference, or No roads buildings or paved areas within 50'of the wetland for more than 1/2 of the wetland circumference. Score= 1 Paved areas, industrial areas or residential construction(with less than 50' between houses) are less than 25 feet from the wetland for more than 95"/ of the circumference of the wetland. Score=0 31 4i. Connection to other habitat areas: Select the description which best matches the site king evaluated. -Is the wetland connected to,or part of,a riparian corridor at least MY wide connecting two or more wetlands; or,is there an upland connection present>IM' wide with good forest or shrub cover (>25%cover)connecting it with a Significant Habitat Area? YES =5 -Is the wetland connected to any other Habitat Area with either 1)a forested/shrub corridor< 100'wide,or 2)a a corridor that is> 100'wide,but has a low vegetative cover less than 6 feet in height? YES=3 -Is the wetland connected to,or a part of, a riparian corridor between 50- 1(V.wide with scrub/shrub or forest cover connection to other wetlands? YFS=3 -Is the wetland connected to any other Habitat Area with narrow corridor(<Im.) of low vegetation(< 6'in height)? YES= 1 - Is the wetland and its buffer(if the buffer is less than 50'wide) completely isolated by development(urban,residential with a density greater than 2/acre,or industrial)? YES=0 Now add the scores circled (for 0.5a - 0.51 above) to get a total. 0 Is the Total greater than or equal to 22 points? YES =Cate go II O=Category III 32 - 10 - 1- 04 DEPARTMENT OF THE ARMY SEATTLE DISTRICT,CORPS OF ENGINEERS P.O.BOX 3755 SEATTLE,WASHINGTON 98124-3755 REPLY TO ATTENTION OF OCT O 20M Regulatory Branch RECEIVED OCT - 9 2002 CITY OF RENTON City of Renton FUTILITY SYSTEMS ATTN: Ronald Straka, P.E. Surface Water Utility 1055 South Grady Way Renton, Wahhington 98055 Reference: 2001-4-01275 Renton, City of Ladies and Gentlemen: You have proposed to place fill in wetlands located in the Lake Washington watershed near the City of Renton, King County, Washington(see attached drawing of wetlands). On September 10, 2002, we inspected the site and found these wetlands to be isolated. A recent U.S. Supreme Court ruling, Solid Waste Agency of Northern Cook County v. U.S. Army Corps of Engineers, No. 99-1178 (the SWANCC ruling), held that isolated wetlands that have no interstate commerce connection are not under the U.S. Army Corps of Engineers (Corps) regulatory jurisdiction. The isolated wetlands on the subject property do not have an interstate commerce connection and are not under Corps regulatory jurisdiction. You do not need a Corps permit to perform your proposed work. Other state and local regulations still apply to these wetlands. The Washington State Department of Ecology(Ecology) regulates isolated wetlands. Ecology's enclosed letter and Focus Sheet (enclosure 1) explain how Washington State regulates impacts to isolated wetlands. You should contact Ecology's Permit Assistance Center at (800) 917-0043 or ecypac cL.ec .wa. o>ovv for more information on how to obtain state approval for your project. We will be sending a copy of this letter to Ecology and to the Environmental Protection Agency's Aquatic Resources Unit. Finally, we consider our determination that your wetlands are isolated and not within our regulatory jurisdiction to be a final determination. This approved jurisdictional determination is valid for a period of 5 years from the date of this letter unless new information warrants revision of the determination. In certain circumstances, you have the right to appeal that determination. Enclosure 2 is a packet of information about our appeals process. fr- -2- If you have any questions about this letter, or about our regulatory program in general, please contact Mr. Jim Green at telephone (206) 764-6906. Sincerely, PtZ�F. Tho Mueller Chief, Regulatory Branch Enclosure _r r t� �°Newcastle yco�al�Cr�ee �M PSC }. may} °h1d�C.re1 ek �x '�•_ COMO NE a x G' .r13_.._ tiY 4t JL Vl-i�GUt i71�, t �QSiitery `. t Ijar;l' 'Wood r14 �- 1 -e r tAapie0o M. LW aplew 1!99 MapQuestoom. Inc.:•1999 Nav'"anon Technob ies . U1-)--7 C J-7 U F •• •• • ' �r .�a�:._ �... � .._. rig • .. s } }_ .a.<. °40 1 1 Vuong.- , z _ 1 .;o Pei y rty 'may f ;'Siff 1 x��' + c� '&' •rr7�-� sy:`s *a. 1: '�-i�y,'4,;.S.e i ';. _''bra. .rs „•.ram .sp �,. ,�` q�c��8,��a� ! 2 � �t c ' l 4ix ''.- . F I.ti� �t@Atib!'� •1 - f r gin•+ .. .� s•. 1; od site i f�ltl111: r r• IL ------------------------------------------------ ' C-4 CC-4(t- I wcs� r --- WETLAND SITE LOCATION INFORMATION BOUNDARY (SURVEYED - l/` `�9�° LEGAL DESCRIPTION SECTION 10, T23N, R5E 10C-3 PARCEL NUMBER 1023059129 CC-3 SP-OS ADDRESS 13642 SE 116TH ZC-2O ST. CC-2 CC-1 WIRE FENCE i SP-03 BLACKBERRIES 4 f 1 PRELIMINARY PONDOND L LOCATION z BLACKBERRIES W 601 W '1 1 ® P-04 PIEZOMETER - 1` 1!. BLACKBERRIES`-- BORING;B-1 31` 1, PIEZOMETER 3:1 BORING B-1 ' _ 21 FOUND 5/i"REBPR 1� FENCE CHZM 9 1000 r' CAP POST ®` `, .4 ; RfBAR dGAP, FENCELINE h4 µ.hp Il N 185148.267 i -�B-5 - BOUNDARY 1 E 131280Ib601 \. - (Stl17VEYED 1 EL'418.4)' ' AUQ9/00/;1 i FOUND 3'i" - 4x 1 `4"`ID TILE PIPE W W/ PLUG B-4 1, .' TOP OF PIPE - 419.75 / BOTTOM HALF OF PIPE 02 ` 1 � BROKEN AWAY FOUND 11/." ® IP W/ PLUG 1 T tCd. Y ye-1 ILL e-ro ®0r3 t SP-Ol (7-F� a-s . B-2 S t 1 X J � X a _ r`I 38" FOUND REBAR 5 CAP SOIL ( y, 1 O 36, BEGIN SPLIT - _BORING B-2 BLACKBERRIES - 42 1• RAIL FENCE 0 ` 1. --\+ IRE FEN eR S.E.116TH ST. CH2M u 1020 PK NAIL N N 162.96 NE 10TH STREET/ E 1312312762.956 EL 416.25 ANACORTES AVE. NE DETENTION POND 0 20 40 60 Scde 1.Feet SURVEYED WETLAND MAP Q / '�f FIGURE 3 II -zs-�z STAT$ S.t. Off' 9 a u' x Oy STATE OF WASHINGTON DEPARTMENT OF ECOLOGY P.O. Box 47600 • Olympia, Washington 98504-7600 (360) 407-6000 • TDD Only (Hearing Impaired) (360) 407-6006 November 20, 2002 CERTIFIED MAIL v`�Y 0� Ronald Straka, P.E. City of Renton Surface Water Utility 1055 South Grady Way Renton, WA 98055 Reference: 2001-4-0127 5 Dear Mr. Straka: The intent of this letter is to alert you that the Department of Ecology (Ecology)has received a copy of the Corps letter dated October 24, 2002, indicating that the wetlands on your project site are isolated. Isolated wetlands in Washington are still subject to regulation under state law despite the recent change in Corps'regulation of isolated wetlands.Your project is subject to regulation by Ecology. Ecology is responsible for administering the State Water Pollution Control Act (RCW 90.48). Under this state law, wetlands are "waters of the state", including wetlands considered "isolated" by the U.S. Army Corps of Engineers. Discharges to waters of the state, including the placement of fill in a wetland, are regulated by Ecology under chapter 90.48 RCW. Entities proposing fill in isolated wetlands must contact Ecology within 30 days of receipt of this letter to begin the regulatory process that will provide assurance that the project complies with state law. Failure to comply with the regulatory process may result in a violation of RCW 90.48 and potential enforcement action. In order to begin the regulatory process you will need to provide Ecology information about your project. Attached is an information sheet that you can fill out and submit to start the process. Please provide any other information (i.e. JARPA) that will assist Ecology in reviewing your project. Please send this information to: Department of Ecology SEA Program (Isolated Wetlands) PO Box 47600 Olympia, WA 98504-7600 OR Fax number: 360/407-6904 -qw- z01 Isolated Wetlands Page 2 If you have any questions regarding this letter please call or e-mail Penny Kelley or Lori Ochoa at the following: Penny Kelley Lori Ochoa 360-407-7298 360-407-6422 pkel461 na,ecy.wa.gov loch461 na,ecy.wa.gov Sincerely, Brenden McFarland Environmental Coordination, Section Manager Shorelands and Environmental Assistance Program STAT � o, O 6 y a `n x 0 1 STATE OF WASHINGTON DEPARTMENT OF ECOLOGY P.O. Box 47600 • Olympia, Washington 98504-7600 (360) 407-6000 • TDD Only (Hearing Impaired) (360) 407-6006 Isolated Wetlands Information Sheet Please provide the information requested below and answer the following questions to the best of your ability. Attach any reports or documents that provide supporting information. This information will augment the information provided in the Joint Aquatic Resources Permit Application and will help expedite review of your project. You may need to contract with a qualified wetland consultant to help produce this information. Failure to provide this information may result in delays in review of your project. 1. Please provide a complete copy of a wetland delineation report including data sheets. 2. What is the category of the wetland according to the Washington State Wetland Rating System (eastern or western Washington version as appropriate*)? 3. Describe the Cowardin** vegetation classes in the wetland (i.e. emergent, scrub/shrub, forested, open water, etc.) and list the dominant plant species in each class. Cowardin class Dominant plant species 4 a. How large is the wetland (including contiguous portions offsite)? b. How far is the wetland from the nearest surface water body? (lake, river, wetland, etc.) c. Is the wetland within a FEMA mapped 100-year floodplain? L�1 5. How much wetland area(in acres or square feet) is proposed to be: Filled? Excavated? Drained? Flooded? Cleared, vegetation altered Other? (list) 6. Please provide copies of the following information if available: Project plans, including grading plan Erosion control and stormwater control plans, reports Photographs of wetland Wetland delineation report, including data sheets Wetland function assessment report Wetland category rating form Wetland mitigation plan * Copies of the Washington State Wetland Rating Systems may be obtained from the Department of Ecology Publications Office at 360/407-7472 or jwit46l(a ecy.wa.gov. ** The "Cowardin" wetland classification system is synonymous with the "Classification of Wetlands and Deepwater Habitats of the United States" published by the US Fish and Wildlife Service. s ti Focus WA SH t N°T°N STATE EEC4 0TLE0'c °Y Isolated Wetlands - Changes in the Regulatory Process Supreme Court Decision A U.S. Supreme Court decision last January regarding how wetlands are regulated has generated a lot of questions by landowners and developers. The court ruled that the federal Clean Water Act does not apply to those "isolated" wetlands where the only interstate commerce connection is use by migratory birds. This ruling overturned 15 years of regulation of isolated wetlands by the U.S. Army Corps of Engineers. While the court did not define the term"isolated," the Corps has previously considered isolated wetlands to be those that are not adjacent to or connected via surface water to a navigable water body, such as a river, lake or marine waters. Changes in Regulatory Process Based on the Supreme Court's ruling, federal agencies no longer have regulatory oversight of these important environmental resources. More specifically, landowners no longer need a permit from the U.S.Army Corps of Engineers to fill in most isolated wetlands - although a Corps permit is still required for isolated wetlands with other interstate commerce use (recreation,industrial,etc.) as well as wetlands that are connected to a navigable water body. However, the Supreme Court ruling did not change Washington state laws on wetlands. The state Clean Water Act (90.48 RCW) makes no distinction between types of wetlands. Rather, all"waters of the state" are covered by the law, and isolated wetlands are considered waters of the state. It's not always easy to tell if a wetland is isolated. Landowners who want to develop an isolated wetland should contact the Corps of Engineers and request a formal jurisdictional determination to avoid any future legal problems and fines. Why Regulate Isolated Wetlands? Isolated wetlands in Washington perform many of the same important environmental functions as other wetlands,including recharging streams and aquifers, storing flood waters, filtering pollutants from water, and providing habitat for a host of plants and animals. Many wildlife species,including amphibians and waterfowl, are particularly dependent on isolated wetlands for breeding and foraging. June 2001 Publication#01-06-020 State Process + Any project that calls for filling or altering a wetland determined by the Corps to be isolated will still be subject to regulation by the state. The state's process for reviewing projects that involve isolated wetlands will be different from the 401 Water Quality Certification process that is triggered by the Corps'404 permit. Rather,Ecology will use administrative orders to regulate projects that will have impacts to isolated wetlands. The standards of review will remain the same as under 401 water-quality certifications- that is, the state water-quality standards for surface waters (WAC 173-201A). Anyone who wants more information about the review standards should obtain the following two publications: Water Quality Guidelines for Wetlands, Publication # 96-06; and How Ecology Regulates Wetlands, Publication # 97-112. These can be obtained by contacting Jean Witt at 360-407-7472 or jewi461@ecy.wa.gov. To seek an administrative order for a project that involves isolated wetlands, landowners should contact the Permit Assistance Center at the Department of Ecology,where our staff will guide you through the regulatory process. The phone number is 800-917-0043 or 360-407-7037, and the e-mail address is ecypac@ecy.wa.gov. GMA Regulations Additionally, applicants should be aware that isolated wetlands in Washington also are regulated under the state's Growth Management Act. Thus,projects with impacts to isolated wetlands typically will require approval from the applicable city or county. June 2001 Publication#01-06-020 03 CERTIFICATE OF WETLAND EXEMPTION City of Renton File Number: LUA 02-119, ECF - Detention Pond & stormwater System Improvements. Location: Detention Pond at 4520 NE 101h Street v _ Proponent: City of Renton —Surface Water Utility. Legal Description/King County Assessor's Property Identification Number: Please see attached legal/#102305 9434 Background: Section 4-3-11OG of the Renton Municipal Code lists the activities that are exempt from compliance with the City of Renton's wetland regulations. This section also states that exempt activities "require that a certificate of exemption be obtained from the Department = Administrator". =u Description of proposal and wetlands: The applicant is proposing improvements to the stormwater system to reduce the frequency and severity of flooding in the vicinity of NE 10th Street and Anacortes Avenue NE. Improvements involve constructing a detention pond to store stormwater runoff, constructing a new stormwater pipe system for the pond and repairs and upgrades to the existing system. There will be buffer enhancements to an off-site Category 2 wetland located within 100 feet of r the subject site. No construction will occur in the buffer. The enhancement of the buffer by removing the intrusive plant species and plantings of native species is a permitted activity. A 3,070 square foot Category 3 wetland, hydrologically isolated, is located within the proposed detention pond site. As the wetland is less than 5,000 square feet in area, the proposed activity (stormwater pond construction) is exempt from the Critical Areas regulations. Date of Exemption: June 17, 2003 R Conditions of Approval: None. 6 C73 Approved b t eVy of Renton Date Planning/Buil ing Public Works Administrator Uwedandcert.doc 3- 20-03 CITY OF RENTON PLANNING/BUILDING/PUBLIC WORKS MEMORANDUM DATE: March 20, 2003 TO: Susan Fiala FROM: Daniel Carey (x7293) SUBJECT: NE 10th St/Anacortes Ave Detention Pond Wetland Review - Exemption The Surface Water Utility would like you to start the review/process needed to obtain the Exemption letter for the onsite Category 3 wetland located on the detention pond property for the NE 10th St / Anacortes Ave NE Detention Pond and Storm System Improvement Project. We would also like an exemption, if needed, for the proposed work in the Category 2 wetland buffer. As you know, the majority of the project is located in the City Of Renton, and the detention pond and some pipe improvements are currently located in King County. The Surface Water Utility submitted the project for SEPA review by the City of Renton Development Services on October 22, 2002 and received a DNS-Mitigated on November 26, 2002 (LUA-02-119) (see attached plans for SEPA review). The City has pursued annexing the detention pond property and adjacent ROW so the entire project will be located within the City boundaries (see Vuong Annexation Figure). The City Council passed a resolution to have the annexation placed on the ballot, and have the area zoned R-8. The annexation election is on the April 22, 2003 ballot. The registered property owners in the annexation strongly support being annexed to the City. We anticipate that the annexation election will be successful, and the area will become part of the City shortly after the election is certified. As noted in the SEPA information and the Wetland Delineation Report submitted with it, there is a 3,700 sf Category 3 Wetland on the detention pond site, and a Category 2 wetland just north of the property. On October 8, 2002 the Army Corps of Engineers notified the City that the Category 3 wetland was isolated and did not require a permit from the Corp for the project. On March 5, 2003 the State of Washington Dept. of Ecology completed its' Isolated Wetland Review and issued an Administrative Order that allows the Category 3 wetland to be removed and the project constructed (copies attached). The City Critical Areas Regulations states that Class 3 Wetlands less than 5,000 sf in area are exempt from the regulations. It appears that a review and letter of exemption are needed from the Department Administrator to obtain the exemption. As part of the project construction we are planning to remove the existing black berries from the 50-foot buffer area for the off-site Category 2 wetland. The buffer area will be replanted with native vegetation (see attached plans). It appears this work would also qualify for an exemption letter. H:\File Sys\SWP-Surface Water Projects\SWP-27-Surface Water Projects(CIP)\27-2266 NE 10th St- Anacortes\01—Pond Design 2001-03\1000-1 Correspd General\030320 Wetland-Fiala.doc Page 1 of 2 The Surface Water Utility would like to advertise the project for bids about May 14th. We would like to have the exemptions issued as soon as possible after the area is annexed to the City so we have all permits/exemptions needed before we advertise the project for bids. Please let me know if you have any questions or need any additional information. Thanks, Daniel HAFile Sys\SWP-Surface Water Projects\SWP-27-Surface Water Projects(CIP)\27-2266 NE 10th St- Anacortes\01—Pond Design 2001-03\1000-1 Correspd General\030320 Wetland-Fiala.doc Page 2 of 2 Proposed Vuong Annexation - z 00 w z � w Q z � o 0 0 - u) NE 1 )TH St 00 0 NE 8th St 7t I 0 400 800 1:4,800 Proposed Annexation Boundary Economic Development,Neigbborhoods&Strategic Planning Existing Corporate Boundary Sue Cartsoa,Administrator G_Dcl Rosario ��NTC 24 May 2001 + 0 - 9- 02 DEPARTMENT OF THE ARMY SEATTLE DISTRICT,CORPS OF ENGINEERS P.O.BOX 3755 SEATTLE,WASHINGTON 98124-3755 REPLY TO ATTENTION OF Ov O 2002 Regulatory Branch RECEIVED OCT - 2002 CITY OF RENTON City of Renton UTILITY SYSTEMS ATTN: Ronald Straka, P.E. Surface Water Utility 1055 South Grady Way Renton, Wahsington 98055 Reference: 2001-4-01275 Renton, City of Ladies and Gentlemen: You have proposed to place fill in wetlands located in the Lake Washington watershed near the City of Renton, King County, Washington (see attached drawing of wetlands). On September 10, 2002,we inspected the site and found these wetlands to be isolated. A recent U.S. Supreme Court ruling, Solid Waste Agency of Northern Cook County v. U.S. Army Corps of Engineers,No. 99-1178 (the SWANCC ruling), held that isolated wetlands that have no interstate commerce connection are not under the U.S. Army Corps of Engineers (Corps) regulatory jurisdiction. The isolated wetlands on the subject property do not have an interstate commerce connection and are not under Corps regulatory jurisdiction. You do not need a Corps permit to perform your proposed work. Other state and local regulations still apply to these wetlands. The Washington State Department of Ecology(Ecology) regulates isolated wetlands. Ecology's enclosed letter and Focus Sheet (enclosure 1) explain how Washington State regulates impacts to isolated wetlands. You should contact Ecology's Permit Assistance Center at(800) 917-0043 or ecypac(a).ecy.wa.gov for more information on how to obtain state approval for your project. We will be sending a copy of this letter to Ecology and to the Environmental Protection Agency's Aquatic Resources Unit. Finally, we consider our determination that your wetlands are isolated and not within our regulatory jurisdiction to be a final determination. This approved jurisdictional determination is valid for a period of 5 years from the date of this letter unless new information warrants revision of the determination. In certain circumstances, you have the right to appeal that determination. Enclosure 2 is a packet of information about our appeals process. -2- If you have any questions about this letter, or about our regulatory program in general, please contact Mr. Jim Green at telephone (206) 764-6906. Sincerely, f Tho as F. Mueller Chief, Regulatory Branch Enclosure l•' ^- f fit , y N t- �$ • � ` Nt - _ Vuong ` s OJ . �. r SZ'` ..;aid {• 1 e h t�- PropertIt y s x gb: X, •�. �y {a 4 F. .. VW 1leY;;' it'h { A � jv- R4 Tf vi T ` "faf�if9�i T r iw } c �1lltif! .•.�) .y.xS "-a.'";`q � t ..MYF?;:.S' 7 fie; �yt, y. -------------------------------------------------------------------------------------------- P C-4 CC-4 I t -e wETLnNo SITE LOCATION INFORMATION r' �� ; BOUNDARY `AU�9�° LEGAL DESCRIPTION SECTION 10, T23N, R5E ®C_3 PARCEL NUMBER 1023059129 -3 SP-OS ADDRESS 13642 SE 116TH ST. ,zo'c-2 CC-2® WIRE FENCE Z t SP-03 It 1t'� t IVl 1 . 4 t •.BLACKBERRIES O t i 7 1 t A l 1 � 3 PRELIMINARY POND LOCATION W W BLACKBERRIES 7 60'< + a. u -04 PIEZOMETER ! ' BLACKBERRIES" -- BORING B-i PIEZOMETER 3:1 i BORIC G FOUND 5/e"REBAR FENCE1 li CH2M+ 1000 ,rr POST ®_` Iy `t 1 i RE9AR 8. GAP IN WETtAFJD 1 7 FENCELWE � 4`t F J N 185148.267 ` 5 -"J BCA/NDARY E 131280L06a lSURVEYEO /1 EL'4/8.41' .. 4"`ID Td.E PIPE FOUND Y , B_4 /J 1 TOP OF PIPE - 419.75 IP W/ PLUG BOTTOM HALF OF PIPE '-02 , f \ r' BROKEN AWAY FOUND f/4" r l ( IT, W/ PLUG t ?' S 1 �� �.�•� B-I/ r ®81=3 SP-Ol �f�( � �, ' ,ry-.,+rl ` � ij r• X a� v'�.-+ W _ t 2 U W r i ;ry 36" FOUND BEGIN SPLIT REBAR L CAP SOS f '42„�• i I• 38• _BORING B-2 . BLACKBERRIES !RE RAIL FENCE J `'�•�� -" ... _ - IRE F S.E.116TH ST. CH2M r 1020 PK NAIL N N 184961.486 E 1312762.956 NE 10TH STREET/ EL418.25 ANACORTES AVE. NE DETENTION POND b 20 40 6b SURVEYED WETLAND MAP s.d� ti Fer1 FIGURE 3 o > �s o Oy ta89 STATE OF WASHINGTON DEPARTMENT OF ECOLOGY P.O. Box 47600 • Olympia, Washington 98504-7600 (360) 407-6000 • TDD Only (Hearing Impaired) (360) 407-6006 REGISTERED MAIL RR 809 647 831 US BAR 12 2003 March 5, 2003 u(! RENT LITY@N SYSTEMS Ronald J. Straka, Engineering Supervisor City of Renton 1055 South Grady Way Renton, WA 98055 Dear Mr. Straka: RE: Order No. DE 03SEAHQ-5367: Administrative Order for City of Renton Stormwater System Improvement Project resulting in placement of fill in 0.07 acres in King County Washington. The request for an administrative order for proposed work in wetlands in King County has been reviewed. The State of Washington has determined that the proposed work, as conditioned by the enclosed Order, will comply with applicable provisions of Chapter 90.48 RCW and other appropriate requirements of State law. This approval is subject to the conditions contained in the enclosed Order. If you have any questions, please contact Penny Kelley. Written comments can be sent to Penny Kelley at the Department of Ecology, P.O. Box 47600 or by e-mail at pke1461 @ecy.wa.gov. The enclosed Order may be appealed by following the procedures described in the Order. Sincerely, ' �Brenden Farland Shorelands and Environmental Assistance Program Enclosure cc: Sarah Suggs, Department of Ecology, Northwest Region _QW. 0 DEPARTMENT OF ECOLOGY IN THE MATTER OF THE REQUEST BY ) City of Renton ) FOR AN ADMINISTRATIVE ORDER TO ) ORDER NO.DE 03SEAHQ-5367 CONDUCT WORK IN AN ISOLATED WETLAND ) To: Ronald Straka,Engineering Supervisor City of Renton 1055 South Grady Way Renton,WA 98055 This is an Administrative Order requiring City of Renton to comply with Chapter 90.48 RCW and the rules and regulations of the Department of Ecology(Ecology)by taking certain actions which are described below. RCW 90.48.120(1)authorizes Ecology to issue Administrative Orders requiring compliance whenever it determines that a person has violated or creates a substantial potential to violate any provision of Chapter 90.48 RCW. On December 16,2002,City of Renton submitted a request to impact 0.07 acres of an isolated wetland to construct a stormwater detention pond, construct new and replacement pipe systems for the pond and repair and upgrade parts of existing stormwater system in King county. For purposes of this Order,the term"Applicant"shall mean City of Renton and its agents,assigns,and contractors. In view of the foregoing and in accordance with RCW 90.48.120(1): IT IS ORDERED that City of Renton shall comply with the following: 1. City of Renton shall construct and operate the project in a manner consistent with the project description contained in Ecology Isolated Wetlands Information Sheet Supplemental Information dated December 11, 2002 or as otherwise approved by Ecology. 2. City of Renton shall provide access to the project site upon request by Ecology. 3. This Order does not exempt and is provisional upon compliance with other statutes and codes administered by federal, state,and local agencies. 4. Copies of this Order shall be kept on the job site and readily available for reference by Ecology personnel,the construction superintendent,construction managers and foremen,and state and local government inspectors. 5. Nothing in this Order waives Ecology's authority to issue additional orders if Ecology determines further actions are necessary to implement the water quality laws of the state. Further,Ecology retains continuing jurisdiction to make modifications hereto through supplemental order, if additional impacts due to project construction or operation are identified(e.g., violations of water quality standards, downstream erosion,etc.), or if additional conditions are necessary to further protect the public interest. Failure to comply with this Order may result in the issuance of civil penalties or other actions,whether administrative or judicial,to enforce the terms of this Order. This Order may be appealed. Your appeal must be filed with the Pollution Control Hearings Board,P.O. Box 40903,Olympia, Washington 98504-0903 within thirty(30)days of your receipt of this Order. At the same time, your appeal must also be served on the Department of Ecology,c/o The Enforcement Officer,P.O.Box 47600,Olympia,Washington 98504-7600; and on the Department of Ecology, SEA Program,P.O.Box 47600,Washington 98504-7600. Your appeal alone will not stay the effectiveness of this Order. Stay requests must be submitted in accordance with RCW 43.21B.320. These procedures are consistent with Chapter 43.21B RCW. 41-3- DATED this day of cc 2003,at Olympia,Washington. nden McFarland Section Manager Shorelands and Environmental Assistance Program CD _-_'- f �.N N L, i i ! i ! i — I NE 12TH ST I [� i �- -- - - -- -i ----- - ------ - R� ! ! ! T ' -j--X ❑ I 9' I EDH 1 I A 1 I ----- --- ---- 1 I 0I - _ ! CITY OF RENTON CITY OF RENTON KING COUNCOUNTY: — ! --- -- � Ell - - - - C LIMITS r NE 11 TH CT D ---- ___ ❑ ; ; LAC IND �To ►A __-- __ ( � _ ROWNIT STORM SYSTEM - - - ' -- - - --- - - - I ♦ �--f ALTERNATIVE ROUTE EX STORM SYSTEM ED r- — I W -i $T - _ ----- - - -� 0 i ED- - - i - - --- --------- • - - r, -- - , , ••ii d W: i - - Jz i �n4 rW T-- T _ / DETEMTM I 1 i Co. n Ij ---- .wo.� ------ ------�------}-------� ------ � i / ----fin�a't-L.r- i ! I L i i R��rorr / A STok�w�rok i NE i i - SE 116TH ST iT— - — - - - i - - ' LINE --- ElEl I ---------- As Shown CITY OF 0. ® NE LOTH ST/ANACORTES AVE.NE 10/18/02 RENTON DETENTION POND AND - I DATUM STORM SYSTEM IMPROVEMENT PROJECT �. BY DATE �I�„�� wo.,® SEPA SITE PLAN _ 1 SWP-27-2266 m< OHO WETLAND 0 m o c-a CATEGORY 2 O 0� a C cc-41 0 m -n WETLAND 7C BOUNDARY Q m 1 (SURVEYED Z AUG.9/00) (Z 0 c CC-I C-3 z 3 I I SP-05 n gzg I I ��^� 2 I Mill C-2 0 L K O r5 �/ C-1/ GC W G k r 0 -1 r WIRE FENCE P-0 BLAC BERRIE W mic 1 ic m nv m V� 1 BLACK ERRIES O 'on c ` IT > a I D , SP-04 IIEZOMET S B CKBI RRIES $ m o 1' inw ' o I O X E CE > ( / Z J ' GAP IN `,,RO T �' m FENCELINE B= I v i I / WET ND I T F BOU DARY / O B-4 B-7 (Sul EYED 4" ID TILE PIPE I A4 /00) T P OF PIPE = 419,75 ou B-8 TTOM HALF OF PIPE 5 -02 I ROKEN AWAY m B 9 ~ B�1 I -3 I SP-01 \ i M I ` I i J m 36,E 1 z q I , SO) SAMPLE 4 36" BEGIN SPLIT Z0 - _ATION - BLA B RIE RAIL FENCE m cn < 3 SDI z — _ B.S m 4C NE 1 OTH - SE 11 So _ - o � N - m rod I D r r m D u, I ITI d Z ��< r � m Z "i 3 1 2 m _ .. fU p � e u A 1c fU ' Z c 4- n g� ;' m 3 �9 36 31 1 qq o STOT IL South Po 32 ` S 6aTN sr 3 g 34 N 35 City of Renton , Washington I 41 Cole-t 3 �TPoint T3 24 E W N . E . 1 Oth STREET / O SE y5N MAY VACIEY1 26 RD < i NE 27TH 5 - - z ANACORTES AVE . N . E . < � z s N 5 W z z m t 6 2 1 ? w z } 3 q<< m Z m < _ DETENTION POND rqL Rp NE 16 ST W > BLVp z a , E R��-/ NE 12TH ST o -. FNTON P K oR �� o RENT01 4 AND STORM SYSTEM Z< NE 10TH ST W < z = _,a -- m IMPROVEMENT PROJECT D p m 9y 12< 7 NTON 8 f Nf a t 9NE ST . " 10 KING - 11 MUNICIPAL < nr s k' COON aTH 5T € A PORT zo ..- PROJBa Yo9 = SITE NE aTH ST ` o ---- - PROJECT NO. SWP-27-2266 SE 287H ST - 5 tltmw RD 133R1bF S32ND ST $ Al PORNAY NE J MARCH 2O03 let 9 �0 k/ w S4 ;u coo 2N S 1 ^ .m 3Ro 17 Lq 16 o s t5 S-- ---- ;E 14 �rS SEl m � � R y B ING NORtH RN SE a2ND ST INDEX OF DRAWINGS ,ea SW 7THS S —Z SHEET DRAWING NO. NO. DESCRIPTION < C) 51 GRF`D WAY R b GENERAL R 24 sw Z LOCATION MAP I1AIGT T 1 G-1 COVER SHEET, LOCATION MAP AND INDEX OF DRAWINGS Sw 6TH ST 19 22 +„ kfRry 23 2 G-2 OVERALL SITE PLAN AND LEGEND 0 1/2 1 1 1/2 `orh`qr PLAN AND PROFILE Sf 3 DR-1 STORM SEWER TRUNK WHITMAN CT NE Scale In Miles 4 DR-2 STORM SEWER TRUNK WHITMAN CT NE 5 DR-3 STORM SEWER TRUNK NE 11TH ST. 6 DR-4 STORM SEWER TRUNK ANACORTES AVE NE 7 DR-5 STORM SEWER TRUNK ANACORTES AVE NE 8 DR-6 STORM SEWER TRUNK NE 10TH ST- 9 DR-7 DETENTION POND PLAN DETENTION POND PROPERTY LEGAL DESCRIPTION 10 DR-8 DETENTION POND CROSS SECTIONS SITUATED IN THE NW 1/4 OF SECTION 10, TOWNSHIP 23N, RANGE 5E, IN KING COUNTY, WASHINGTON EROSION CONTROULANDSCAPING THE WEST 164 FEET OF THE SOUTHWEST QUARTER OF THE 11 T-1 TEMPORARY EROSION AND SEDIMENT CONTROL PLAN & DETAILS NORTHEAST QUARTER OF THE NORTHWEST QUARTER OF SECTION 10, 12 T-2 TEMPORARY EROSION AND SEDIMENT CONTROL PLAN & DETAILS TOWNSHIP 23 NORTH, RANGE 5 EAST, W.M. IN KING COUNTY WASHINGTON; EXCEPT ROADS, (OR 49,036 SQUARE FEET OR 1.125 ACRES MORE OR LESS). 13 T-3 TEMPORARY EROSION AND SEDIMENT CONTROL DETAILS KING COUNTY PARCEL NO. 102305-9129 14 L-1 DETENTION POND LANDSCAPING PLAN DETAILS 15 DD-1 DETAILS 16 DD-2 DETAILS _ 75% PRELIMINARY DESIGN u,2u Hu NA CITY OF N.E. 10th STREET/ANACORTES AVE.N.E. MAR 2003 R G,VNG REN TON DETENTION POND AND STORM SYSTEM CH2M H I LL R J PRt� MTUY 7 IMPROVEMENT PROJECT R. vb,1ning/e„ae-1„y/PuerK wo.,cs Dept COVER SHEET,LOCATION MAP,AND NO. REVIs,oN IFY DATE APPR ;-P1ATW �"�' . INDEX OF DRAWINGS .o , -16 n I I, i n i A 17 1 n F n . . . . NOTES: 1 -� 1.SEE NOTES 1 THROUGH 10 ON SHEET 5. 1j1 ABANDON EXISTING UTILITY ___ I N- B�T T iM 4$�; .......... 4D6..: 4 LT --_-: RIM.Et=.41969.::: .(/) 2.CONTRACTOR SHAH LOCATE AND ABANDON 02 REMOVE EXISTING UTILITY _ . ....... ........... : THE SEPTIC SYSTEM. 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NV= =' - --:::::[:......... .. ... ........................... N,Y. dso -u3,- ---- - - 823+1s RiMEL=4t>:5 6' MIN. : � ,,saz.0 ✓�,� I �0 1T£YELLED:RIPE:EpID::::E:::::.::::.:......:7;t lT_ -...:.... ;. .... o _ ----1 "Ti-}a on 8 18'NW iNV-405-91: ... ' GRASS DD-1 E a] I ( :.........)NSTALl DEBRIS::::::: :::::RIM EL=4j490...:::: ...........- .::: - \ - 18-S.w TNY=405.9.1 :18�:W:INY=405:83: :' .z .........BATA�ER:::::::::':::;::::::::: 16':W tNV=406-00:::: 18 I _ I n _ .:18':NE INV=4MW c ` D f I / ''EXISTING C8 f18..E.:...:.:.:...-:....:.:....:.....:.:.:...:...:.:.......18.:.SEd1V=4WOTT:....:.:...:.:_:.... . .. ... -... 4'C.._ 1 ro K . ..... :::::415_..... :::E::::::...E......::: :::......:........ ... .. -"'n-uwu...:....:.:.-...:i GRAVEL DAixN GRAVEL ROAD L N I •.GROI)%D....-• " 1 �' EXISTING GROUND 406 50 t l - - - _ ... .. ..._ � : B�ID:KW:ND=9 ..... , : FlNISHED. : - ::: .CUT:PLUG... N tE5]%] =*C*D FT `!��A{•iiE _'./AC I-EYCr :::_.:.:. .. .. .. .... ..... ....._ .:.... ..' gg .A10:...:::::: E:.. --icy+:::..:.... i d 0�'.-�- , 9 - gam. . .... .. ... R > ._��... zax CLEAR WETLAND BUFFER. ti T M 4 }�., ROW CONTROL DOUBLE 20'-{tam 9� .i E 1 W ::''." :::. .:::ADE .. ...: :: :::. rr REPLANT WITH L l?1' ^! ?��? r x¢ �? I - �° f �n000:::::' "_.. .. .._ :wae ::: : �i ti €0'\ -uG_:E J __ STRUCTURE,SEE" -COATED"GRAN , s„ ... NATIVE VEGETATION. _ ::::::.:... ....... ..... SEE PLANTING PLAN '� n R v z ' LINK GATE 15 i I 28. 1� g iF;1$ V _ .. ....:66.:LF.18'.:CPIP.'-'-..... :. .:.:.:45.TF:Ie:.CRFP:.:.: .: .:.:.41:.L1 SHEET L-1. I E ASPHALT I :: €I :_ `: 405E:... .. aB=:CPEF--.. ....... : c ' - -= DR-8 ACCESS RO "°` J "'` :......... :Q ._ AD h. ;w A 200x__.......:..... �X .........ZO....... I w TC EXXDNG ......'..... ...... ............_ . .- 6=b:24X ...... :...-::' 't - ROCK PAD AT::: ::: . 4 ............... ON WW' :. :..:..::: :::...... CB 20 OVERFLOW_:?:::::::::PI?E:END.:SEE:::::::: '":::::: .::::::::::E:::::::::E: ::::::: ......:::s-....--::: A& N REMQ N:... ::. ....___...........:.:.:.:.:...:..._ ..:.........:.....----:.........:.:..__...................... .. ... :' . ............. rt WfFZ FENC�m ............._B 23t49, 50'LT -- ...._._..................... - S I i T i e TOP OF STRUCTURE=411-50 DR-8 o 18' SW INV=406.88 ��'' ���n�� SEE DR-6 NOTE — PROFILES ALONG LONGEST PIPE CL IN THIS VIEW tt PLAN PROFILE Sa N O C dhJ 'r L#-F, t'(J✓� =20 SCALE: 1"=20' HORIZ !r bk�( C/ 1"=5' VERT _ 75% PRELIMINARY DESIGN Dam f" CITY OF N.E. IOthSTREET/ANACORTES AVE.N.E. MAR 2003 CH2MHILL _R w DETENTION POND AND STORM SYSTEM �_A MET ==I RENTON IMPROVEMENT PROJECT NO. REVISION BY DATE APPR ,: �oAus ®�; 1`10""'9/� N,9/wlx» w«a o DETENTION POND PLAN 9 16 n F 1, ,n ,n ,n J AT A I Plant Materials List 4z _ COMMON NAME SCIENTIFIC NAME TYPE MATERIAL QUANTITY ' VYTSTEM EMCEDAR 71iWA PUCATA r THE r CAL BB 7 LEYCAND CfFT7ES5 C ESSOCYPARIS lEYLANOH TREE rCAL BB 11 7Rff r CAU.BB 5 C0LKXA-FR PSEUDOTSWA MFAZESA MOC TREE r C'AL BB 5 4- O CFbkNGE PMLADELPHUS LEMS11 _ TREE 5 GAL CCNTAl82 11 - O_ I _ 1 CRBGCNASH FR"NL6LATIFOUA I I FEDOSERDOGYVOOD. CO)WVM SE%CEA VAR-SER/CIA SFRDB 5 GAL OQITA1$2 5 F*i0DCCeVP4N RHODODENDRON SP. SVRJB S CONTA 1 CAMFLLIAJAPONICA SHRUB 4-S CONTA 32 I EV�4CLB.MYIIS CLEPA4TIS ARMANOR VPE 2GAL CCIJFAl82 9 ND7ES BB BAl1F3?E Blf3AF®- T n Total I / - - — Meadow Seed Mix I ' COMMON NAME SCIENTIFIC NAME Ip PLS DWAWF68d.WL RYE BAFX.TAY OR PR8820 CLFE11I EVAR BARCIAY OR PAB820 29A RM i FESIIICA W N4 DUaISCLAA RRB(A' COALED CHAIN BA1 BCA MRDFESQE a.e _ LINK FENCE •i: ,�1 I RED FESCUE FfSTucA RLeRA52 TYPE I v, ( COLCN4L BENTMASS ACAOSS6 TENM Ob ._�-.p WWRF YARRDiN"PP Lt i' — � J ` _ _ r / �— T€ DUFCH V*M CLOVB2 ATRFQLM Fiff815 W 2.0.6 SALSTFLI N4 VYBBRYCLOVER TRFOLRM FT2AGFE7CA15ALM1' 4-7 W--SEEEYMI� . _ .�\ 4 SVYEETALYSSLM ALYSSlA1MAFVTMM 2.4 ENGLISH DAISY BELLS FBa8N5 12 BABY BLUE EYES NBwf1iA M82F51 2.4 __ OTF6t CROPSEED 0.9(MAX) :. Totalso FL W S•FOLMS OF SAM E SEM - - ley .., •�� __ " _��--'�___%}�=� ,—/ ���. � � € � NOTES: _�f* 7.5 — _ - y 1 —� -- 1. PRESERVE AND PROTECT VEGETATION NOT INDICATED FOR REMOVAL. 2.AMEND SOIL IN CLEARED AND GRADED AREAS WITH 4 INCHES OF DECOMPOSED ORGANIC MULCH- MULCH SHALL BE THOROUGHLY INCORPORATED TO PRODUCE A MINIMUM AMENDED SOIL DEPTH OF 12 1 INCHES. 3.CULTIVATE SOIL IN CLEARED AND GRADED AREAS TO A MINIMUM DEPTH OF r W y y e,� L 1w V Ir I t I 12 INCHES BY HARROWING, SCARIFYING, DISKING, OR OTHER METHODS. :ECOLOGY 4.OWNER'S BIOLOGIST SHALL APPROVE FINISH GRADES BEFORE LANDSCAPING. �Y WNPL 1 5.HYDROSEED GRADED AREAS WITH MEADOW SEED MIX BEFORE INSTALLING PLANT MATERIALS. 6.OWNER'S BIOLOGIST SHALL INSPECT PLANT MATERIALS UPON DELIVERY- _ 7.INSTALL PLANT MATERIALS AS SHOWN ON DRAWINGS. LAYOUT OF TREES AND SHRUBS SHALL BE APPROVED IN FIELD BY OWNER'S BIOLOGIST PRIOR TO W y i v t I 4 W r- �-�� L i t� i INSTALLATION. /3� 8.INSTALL 3-INCH DEEP, 3-FOOT DIAMTER RING OF BARK MULCH AROUND ALL ° 4. W W W W W W ` IE / 9.LANDSCAPING SHALL BE IN ACORDANCE WITH SECTION XXXXXX m /—�`� �>•> S 1 t;i 1 t I PLANTED TREES AND SHRUBS. 0 405. 405 5— \ 1; /E q�9Rpy LANDSCAPE PLANTING. _ r n Y~y i \ � ` I E / ROAD GRAVEL CA?s;i I MAX FEW-UNEJ r ! ( C,1 Y7,t -5 U f a t+ e P-4 PLAN SCALE- 1'=20' 75% PRELIMINARY DESIGN Y CITY OF CH2MHILL RAD 1'=zo' N.E.10th STREET/ANACORTESAVE.N.E. MAR 2003 -� REN TON DETENTION POND AND STORM SYSTEM —' FRETS — IMPROVEMENT PROJECT DATUM R. spats Pbnning/Budging/Publ'�c Wori�i Dept No. REVISFON eY DATE APPR DETENTION POND LANDSCAPING • i.R nnN PLAN 14 16 n n Jr, pit, t w A A ........................................... ...... ............ ....... ................_ _.. - : - - --_'- ". - ".... -___" -'_" ------- ------ .... ............................. ............................ ......... ... .. ... .. ..... ..... ...... .... ........ ......... ......... ............. a ... : -- ......... ....... .............. .... .. . . ........ -:,:::,COATED:::: ...... . .. .......... C;) COATED: .... ....... ........ ---- -- - ----- .......... --- ---- ------ DMIR.LINK FENCE TYPE 1: ....... .. --­----­--- MAN�UNK'F-ENCE TYPE I ...... .......... ......... ...... ........ ...... (f) .......... :... - .......... . ............. .... ROUND MANHOLE COVER VATH ...................... ...... ...... . ............ ........ ...... ........ ......... LOCKING BOLTS MARKED'DRAIW ........_....... .......... .. ... --- ...... L: �SOUTH CL ....................... ....... ............ . ---------------- - .................... ........ ------- ......�420.... ....... ...... ... .............. .... ........ (SEE aTY OF RENTON NORTH:PL: :::::7::: . ..... ..... .. .. ........ ------------ STANDARD PLAN BR29) ............... -------- .......... ........ ............... ......... ----- --- ........ ......... ........ w . ..... ............ .....w................... .........;_- . - ... : .. . ........... ......... ...... .........:.... ......... .. ... ............. ..... ....... . ....... .......... ....... ........:� _.,_'..:.. ........ ......... --------- ::::............ ... HANDHOUDS ....... . ....... ......... ---------------- ......... .............................d ........... ....... - .. ...... ...... ....... ......... ............ . ... w ... .. .. a................ ...... z .. .... ----- ........... ..... ..... ................ 4'MIN .......... --------- --------- EXISTING GROUND .... .. ......... ..... . . .. .... ------ ... . ......... 4-1 �5_................................................................... ...... ........................ .......................... ........... .... ........... .......... IV MAX a .-: — - w ........... ..... .... ................... .........: .. ........ ..... .. . ..... ......... ......... . . .................... ....... w..... . .......... ......... ...... w ......... .............. ......... ......... ......... ... ..... ........ ........ ...... ... . ......... ......._:................... ......... .......— -- ------ ..... ... -----------­-­-- .......­ ........... ..... ... . ....... ......... ................... ......... ......... . ......: OVERFLOW ELEV-411.5 ...... ......... ....... :::::::" .::::.. ......* *­ -** **'' 60 1 .................. ......... ..... . . ...... ........ ............. .........w......... .......... .... q .....: :.......... .......... ......... .... .. ..... ... FINISHED- - - .... .... .......—......... ......... ......... .... . ....... STANDARD GALVAMZED :................... ... ....... ........1:......... ......... .......... ......... ........ ................... ...... ... ... ........ ........ .... ..... ... ---- -- STEEL LADDM/STEPS .......... ........ ..... .. ...QZADE-. .. ...... ......... .............. ...iCOLOGY'%RLOCK:WALL�.SEE.:SEIC ION 7� . ........ ---- ....... tLt V. :.:_............. ...................................... I C C ................... ........... 0...................................... ........................... ............ ......... ......... ............ ......r.... . ..w . ..... ......... .......... .........F... ......... ...... .. ... .... ................... ......... -------—......... .........: . _...:--------�:.......... ..... . ........ ........................... .......... .........:1........ ......... ­ i— .. .... ... ...... .......... ........... .......A......... ....... .a . . . ........... --- ......... ... .....w -, . ......... ......... ....... .......... ... ::::: --..:,_:::: ":,*...:.......... ............. .......... ......... ......­.:....... . ................... ...... :' ... ......... ......... . .... ..:..... ...:..... ......... ......... ......... ................... ...... : . ......... ..... ... ......... ......... �4 ELEV.41050 WITH :.... ....:......... NAL4 .......... ......... ....... ......... ........ ..... ... ......... ­-­--- --- ................... ....... ... .... ...... ...... . . - ..—..... ...:....::::: ........ I : 9 2' MIN .................... ------ ... .......... T . ..... .......................................... ............................................. ....... . 4.b. ............. POND--BOTT ........ ..................................................... .... .... .... ............................................... ............... PIPE SUPPOR ............. ...... ------- - ........ ........ ......... ......... ..... ... ......... ......... --------- ......... ......... ......... ......... ......... .................. --- NOTE 3)3-..076. ......w--------- ............ .........a......... ....... w ....... ...... ......... ......... ......... ......... ... ALUMINUM OR.07gr CLEANOUT GATE. SHEAR GATE a ...... ---------:......... ........ . ...... ­.:... .... ......... ...... ......... ......... .........a......... ......... ......... ............ W DIAMETER MIN. -------- .... ...... ....... ..... ......... ................ ....... ......... ......... ........ ......... ......... ......... --------- .........:_ STEEL :_...... ......... ...... ... :::7::::: .,I,.LO':TOP.Sm.' ......... ........-------_.:......... ......... ......... ............. ............. .......—....... - ---: (SEE CITY OF RENTON ................ .......::. ::::: : — ......... ......... ......... ......... ......... ........ ......... ............. -..:......... ..........:SECTIO N:::::A: :A :SEE.SpECIfAnONS:: ......... .........a......... ......... ........-..... ... ........-......... ... STANDARD PLAN BR05) ............. . .. ::::... :­----- - ................... .................... ......... ....... OUTLET PIPE INLET PIPE ....... ....... ------- ......... .. ....................... .:6iTE6.:- .............. .......... .............................................. ................................... ......................................:­........................................................................ ... SEE NOTES 5.6 ................... .. ...... .............. :.........:.........:.COATED..:... :...... ......... ......... ......... OR PIPES .... . ......... ......... ......... ......... ......... ... .. ... ... ...... ......... ...... ................ . ...... . ........ ......... ....... w:460.6:: z ....... ....... ......... ....... .................. ......... ......... ......... ......... ....... ........ ........ ......... ......... ......... ......... ....... .........:. ....... ......... ......... ......_.:........ a........__. ..... ................... --- INVERT ELEV. ......... ......... ............... --------- ....... ......... ............ ....... --------- ......... ........ .........:�.. ..... ......... PER PLANS .......... ......... ......... ......... ................... ......... ......... . ....... ......... ......... ......... ........ .......­1.. ..... ......... 4-�6: : . .......... INVERT ELEV. ................ :.......................... ....................... .............................. ................................................... ............................................................ ......................................................................... .............................................. ................... �....:.... ....:...... ......... ........................... ............. ------- ........ ......... ........ ........ ................. PER PLAN ................ .................. ......... ....... ....... ................... ........ ---------:......... ....... .... ....... ........... . .. BLOCK:: ................. ......... ---- --- ......... ......... ......... - ------ ...... a z --­-------------- w... ................... ................ .......... ...... .. . . ............ ......... .........:­...... FE ... . .... ........:.. .... ---------- ------- ....... --------- ... . ..... ......... ........................ ........ --------- a.. ...... ............:................... ................................................. . . ................I..................................:­............................................................I—........ .......... ...................:........................... ....................: ----------- ------- CHAIN 1INK:Fb4CE TYPE:I . ....... --- --------- ................. .........:..------- ........ .... .... ----------- -----­--­ RESTRICTOR PLATE .. . ....... . ................. ......... ......... ........ .........: ........... ........... ....... ............... ......... .... : _'' - — .. ...:......... ................ - ...... ......... a.. .... WITH ORIFICE DIA=1.5' ------------------- ...... --------- ...... .... ............................................ ------I........ (SEE NOTE 9) :-*... ---- ------------- _-_ ---------w. ... . ...... ......... --- ----a--- -----:......... ............... ................... .. .... —..... . ........ ...... . ....... ....... ...... -1.............. .......................... ---------- -------- ......... ......... ...... ............... . . ......... --------- ...... bAiSt:COURSE........ ----­------- - ---:... ......................... ...... ............ w......... .......:�.... ..a......... ........ .......::. . . :: --------- --- ----- ............. ... ..... Wi, . : . - --------- --- ----- ....... .:-- ------ -- -kSf:�... ................... i4mit. :A. .......... ... ............................. SECTION A—A ELEVATIONS- ......... ................ . dW:W_ ..................:....... . ....................... ....................:.............. ------- ... ............. ................................................... :pq�!p:WATIER:SURFACE_ ......... ......... ......... ......... EMERGENCY K01, ----- --- 9----- ........... .. ...... ........ ....... ------------ `CSB - - ---- ------ ....... ............... .......... . .............. ------- .......POND-90TTOM ... ... ........... ....... ......... . ....... ...... REMOVABLE .......... .. --------_------- ....... .... ... .... .......... ......... --------- . ...... Et=�405.5- ......... ......... WATER—TIGHT . ................ ­-­- --------- -------- :......... ......... . ....... ....... ........ w ......... .................. ................ ....... ........... .........a. ....... --------- ......... Lw�.. ......... .. ...... ........... ......... .......:"1 :::3:-- ---- -- 1 w COUPLING .............................. ...... .......... ................................. ------ ...................................................... ....... .................... ......... ................. ................................... .................... ............. : :1 --------- ............. .......... ......... ...... ......... ......... ......... ......... ....................... FINISHEO : ......... ....... .......... ............. ..............: ......... ....... --------- ....... ......... ......... ......... ------------ ...... ......... .......... ---- ­ ----- . ......................... ......... ......... ........... ....... ....... .......... ......... ....... ..... . ..... ......­.: ------ - ------- ----------- ------- -- ------ ............ ......... -- ---------: ................... a ...... ........ .. .......EL-405.5--- --------- ------ ................. ........... -C ....... ......... ........ .................. ..... ......... 4b6:-------- ........... A A . . ......... . . .....:........-......... ­ ......... .........:......: : r ....... ....... --------- ......­.:.........w.SEQT10.N:::........ ........ .................................................... ------ ........P.IOND*,BOTTOM-,*........... ..............-------------------------­­--------­---­ ­*........................................ ............................................................... PLATE V47H ...................................................................: .......... ......... ..................w........... ................... .......... -- ­ - ----- . ........... .............. .......... ORinCE ........... ........... ................... ....... ELBOW DETAIL ......... ............... ... .. ..... SPECIR ............ ................. ... ... — .:--------- ------ - ------- ........ .......... ----1.�O':TOPSOIL--­--_--------- ...... ...... :SEE ---- ......... ......... TOP ------ -- ------ S- ECTION :: 13�1y_:::::::: SPECIFICATIONS---- ------ - OF ......................................................-----------------­ .................................................. ------------------------------------------------------------------------............ SPILLWAY PLAN VIEW PROFILE L 413.5 3 1 1 3 OVERFLOW WATER CB #19 FLOW CONTROL STRUCTURE SCALE: 1"=20' HORIZ flff�lll_ SURFACE EL 412.2 1"=5' VERT IIIu___ SCALE: NTS SEE RENTON STD DETAIL BR-04 FOR NOTES xx CONSTRUCTION GEOTEXTILE ii{ III FOR PERMANENT EROSION CONTROL (CLASS A) 4' THICK ACP ELEVATION CL A TOP OF BERM EL 413.5 TOP OF SPILLWAY EL 412.2 4' ACP CL A 3 QUARRY SPALLS 4'—D* A A CONSTRUCTION GEOTEXTILE v FOR PERMANENT EROSION CONTROL (CLASS A) POND BOTTOM SECTION CB #20 OVERFLOW STRUCTURE (_4 SCALE: NTS SEE RENTON STD DETAIL BR-13 FOR NOTES xx EMERGENCY OVERFLOW SPILLWAY SCALE: NTS xx 75% PRELIMINARY D E S I N P\ A qfj JA AS ED EL 4135 G TEXTI EO LE T EROSION E CwM WL AS SHOWN CITY OF N.E.10th STREETtANACORTES AVE.N.E. NEAR 2003 R_CHUM tis? RENTON DETENTION POND AND STORM SYSTEM C H 2 M H I L L J.PREIS IMPROVEMENT PROJECT Pi�ing/Bu;krwtg/P"K Work3 Dept DETENTION POND GROSS SECTIONS DR-8 P ADM6 NO- REVISION BY DATE APM �01 6 7 PLATIN A k 1. k I 11 Il _T_F. AFA November 11 ,2002 Development Services Division 1055 South Gradyy Way Renton, WA 98055 Attention: Ms. Susan Fiaia Subject: LUA-02-119, ECF Detention Pond and Pipe Repair. Ms. Fiaia, We support the proposed project. We do have concerns about the construction phase and maintenance of the detention pond. The contractor will be working in an residential area. The City of Renton must require the contractor to strictly follow Renton work rules. In addition we would like to have the following restrictions: A. Equipment and material delivery or removal duri only. ng normal work hours B. Equipment maintenance and fuel delivery during normal work hours only. C. Ample notification if any driveway or street to be closed. D. A City of Renton phone number to call with question or concerns. After the detention pond is completed the City of Renton must have a mosquito control plan. A detention pond at NE 10th and Duvall Ave. has about six feet of standing water ever since it was completed. DEVELOPMENT EVELOME %Roert and Rose ary K y C� OF E��rroNNJNGnacortes A NE, WA 98059 R LEI VED From: Susan Fiala To: Carey, Daniel Date: 3/10/03 11:18AM Subject: Re: Permits/Review Needed ? - NE 10th St Detention Pond Daniel: Until the subject property is annexed into the city, no permits can be issued. However, we can review the plans, and as you understand, this would be at your risk. The wetland issues: we can review plans, but no letter of exemption would be issued until the property in under the City's jurisdiction. I am also copying our Plan Review staff, so they can be in the loop. Susan Fiala Senior Planner Development Services Division Development Planning (425)430-7382 >>> Daniel Carey 02/25/03 05:07PM >>> Hi Susan, I'm concerned about getting any permits and reviews completed before we go to bid at the start of May. We should have the 75% plans from the Consultant about March 6th. What I'd like to do is have the 75% plans reviewed for the wetland issue. Ideally, I'd like to have an exemption letter issued contingent on the annexation passing. I'd like to send the 75 % thru Plan Review for their comments/ information, and for assigning a construction inspector(assuming Kayren does it then). To my knowledge Development Services does not issue City CIP projects Construction Permits, but they do give the plans a brief review. I don't think there are any other City Permits needed, let me know if you think of any. Thanks, Daniel >>> Susan Fiala 02/25/03 02:56PM >>> Dan: We received your email concerning permits for the project. From the Planning side, once the property is in the City, we can then issue a letter stating the work is within the wetland exemption. Are you also asking if any utility construction permits are needed?What other permits are you concerned with? Let me know, and I can do some checking with our Plan Review and Building Dept. Susan Fiala Senior Planner Development Services Division ~ 36 d 31 0cn LJj N 40TH 4.1 z ST cf) w CL South Po Q 32 ��^�S 88TH sT g 34 N 35 City� � � � 3 3 0�,� � �s0- Coleman ' Vrl Point 3 30 gS�H w SE MAY V TO > T 24 w SE w VALLEY RD Z NE 27TH S -- NEEN LLJ > Ld ` I w Q >> `— I I ( J > 1 N �— w Q I.. F` N Z cn w o CIOJ z z 00 > I 9 ANACORTES AVE ■ ■ ■ 0 a z 5 W 4 1 V > w 3 —� = O Lys 2 1 2 m 0 1 1 Q z I ,L �- w rqL R 40s NE 16 ST BLVD o Q I M SE RENTp DETENTION POND F0 '�i/sR���q c3� w Z ��� D > I N_/ 9 > r :DM Q IMPGjJ NE 12TH ST I QGy p w i AWTppN DO 900 wRENTOcn 0Q I w AND STORM SYSTEM yo _� z 900 Z NE 10TH ST w `— 1 Q w IV �1vT � J=tea z Q I I = to QY J 00 R q� MP OVEMENT PROJECT 12 > w �05 NE > > 9 �N w Q I KING -- Q > N TO 8 a NE ST > 00 10 11 w MUNICI AL 'T" S� � —, COUN A PO T Z z o w l — z PROJ ? z 124TH ST DDoo I=- o wo o Q Q 1--- I 1 I S I T E Q D ---- -� I PROJECT NO . SWP-27-2266 z NE 4TH ST o SE 128TH IT s� r—l1 m ---� — w S LPNaSTCN RD 3 �� I i cn z AI POR�/AY N� w 1 ,-, I NOVEMBER 2002 S 133R[�T fi32ND ST ,pFi�TON PvE � D 900 z I I �� I w 4 s�yZ—, 1''9,0 > I w I I Q o k/ q,�,c 900 S 2ND ST ��` I, Q 14 -- ---� Vtr�( S t 13 9w oN O < SIM S 3R T 1 � L,9�C 16 z s 15 F- S �J F z F INDEX OF DRAWINGS w R S SET SHEET BUR01V(3 SH RN 169 SE 42ND ST N0. DESCRIPTION SW 7TH S co S 7TH S O GENERAL Q c, 515 1 COVER SHEET, LOCATION MAP AND INDEX OF DRAWINGS WP Sw GF, 2 OVERALL SITE PLAN AND LEGEND z LOCATION MAP BURL/NG7-0 �FRUR N 24 �5 *ORTNERN 23 PLAN AND PROFILE \ d SW 16TH ST 1 9 22 169 7 16 ) �yq 3 STORM SEWER TRUNK STA *_ TG Y sF 4 STORM SEWER TRUNK STA '_ TO Scale in Miles 5 STORM SEWER TRUNK STA STA TO 6 DETENTION POND PLAN . D ETAI LS DETENTION POND PROPERTY LEGAL DESCRIPTION i DLIAILS 8 DETAILS SITUATED IN THE NW 1 /4 OF SECTION 10, TOWNSHIP 23N, RANGE 5E, IN KING COUNTY WASHINGTON THE WEST 164 FEET OF THE SOUTHWEST QUARTER OF THE NORTHEAST QUARTER OF THE NORTHWEST QUARTER OF SECTION 10, TOWNSHIP 23 NORTH, RANGE 5 EAST, W.M. IN KING COUNTY WASHINGTON; EXCEPT ROADS, (OR 49,036 SQUARE FEET OR 1 .125 ACRES MORE OR LESS). KING COUNTY PARCEL NO. 102305-9129 30 % SURDMGNED. ',2M HILL _ �� �w 19M ,- CITY O F N E 10th STREET/ANACORTES AVE NE 1 1 -12-200 1 "-20' HOPozoNTu: NAD ,sas/,ss, DESIGN R. CHUNG •� REN TON DETENTION POND PROJECT FIELDBOOK: DRAWN: — PLAN & PROFILES PAGE °RP'"^NG NO: J. PRETS ONE INCH DATUM H MHILCHECKED- AT FULL SCALE Planning/Building/Public Works Dept. COVER SHEET, LOCATION MAP, AND ADAMS IF NOT ONE INCH a N0. REVISION BY DATE APPR A,Pawm: SCALE '` D1 `Y INDEX OF DRAWINGS ° , °�° g Z T. 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"°1 "'"° '°°° NE 10th STREET/ANACORTES AVE NE 1 1 -12-200 SURvTYED: CH2M HILL 1 „=20' „ : „� ties/tact AL CITY OF Fl ; R. CHUNG " 'a DETENTION POND PROJECT DRAWN: R E N T O N PLAN & PROFILES PARE. J. PRETS DRAWING No: ONE INCH DATU M CHECKED.c P. ADAMS AT FULL SCALE Planning/Building/Public Works Dept. STORM SEWER TRUNK STA _TO _ QIF NOT ONE INCH Z N O. REVISION BY DATE AP P R I LAPPROVED: SCALE "�`0RD1NGLY � 5 8 w LATIN L, I J Al-ININNNAA_ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - - - - . . . . . . . . . . . . . . . . . . . . . . .--. . . .-.-. - - - - - - - - -- -- -- -- -- -- -- -fl- -- -- - - - -.1 -. - -. .. . . . . . .- . . . . . . . . . . . ... ... ... ...- ...- ...- ...- ...- .. . '.. ... .. .... .... .... .... .... .. .. .. .. .. .. ... .. .. .. .. .. ..- ..- ..- ..- ..- . 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Z z 00 . . . . . - - - - - - - - - - - - - - - - - '2 . . . . . . RIM -EL-41-4. - - - - - - - - : * - - - - - - - - - - - - - - - - - - - - - - - - * , : , - - * . . . * * - - - - . . . . . . . . . . . . . . . . . . . . . . . . ItW Ln . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - - - - - - - - - - - - - ­ - - - U) cn . . . . . . . . . . . . . - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -AM B."W- WD-90 - - - - - - - - 127 -NE -IE=410.63- - - F-- . . . . . . . . . . . . . . . . . . - - - - - - - - . . . . . . . - - - - - - - - - >cli 5 5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . - - - - - __j . . . . . . . q - - - - - - - - C.) 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AUGo 11 0 Lo 0 - - - - - - - - - . . . . . . . . . . . . . . . . . . - - - - - - - . . . . . . . . . • Of r r r ­............... ....... ........... ......... jt' 000 ......... ------ ....... .......oo---------- ........ ------------------- ------------------ -9 L-V �!j '\ I - - - - - . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . KBERRIE x . . . . . - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - . . . . . . . . . B-4 B-3 cif (L . . . . . . . . . . . . . . . _j U) Lj L'i L� . . . . . . . . . . . . . . . . . . . . . . . . . . - - - - - - - - - - - - - - - - - - - - - - - - - - . . . . . . . . . 406 F_ 13 -V 0 : : _ 9 . . . . . . . . . . . . . . . . . . . . . . . . CB, - - - - - - - - - - - -GB TYPE-fl - - - - - - - - - - - - - - 00+9 - - - - - - - - - - - - - - - - - - - - - - #11 'r:v' 48 48 . . . . . . . . . : . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .#8 . . . . . . . . . . . . . . cl . . . Ld B- CO T CTURE CO CONTROL- STRUCTURE - - - - - - - - - - - - - - - - - -STA­ XX. . . . . . . . . . . . . . . . . . . . 5(r N ------------- ................... ------_....... ............. ------------------- ................... ........................0........................_.:_---------------- ECOLOGY ('� - - - - - - - - - - - - - - - - - - STA- XX- - - . . . . . . . . . . . . . . . . . . - - - - - - - - -SOLID LOCKING LID- - - - - - - - - - BLOCK_-WALL o B 2\(! . . . . . . . . RIM -EL=411-3.�---- - - - - - • - - - - - - - - - . . . . . . . . . - EL=413.91 - - - - - - - - - - - - - - - - - - - - - - - - - - - - . . . . . . . . . . . . . . . . . . . . . . . . . . - - - - - - - - - - . . . . . . . . . - - - - - - - - - - - - RIM- - - - - - - - - - - - - - - - - - LLJ C) CLASS 3 WETLAND 00 L6 - - - - - - - - - - - - - - - - - - - - - - - - - - 1W' -NE -IE=406.98- - - - - - - - - - - - - - - - - - - - - - -VV'-E -I E=407:38 . . . . . . .uw I . . . . . . . . . U- J . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . < . . . . . . . . . . . . . . . . . . . . . . . .1 b M' "-- - - - - - - - - - - - - - - - - - . . . . . . . . . . . . . : . . . . W- IE7�--4a-87 - - - - - :2 6 C5 . . . . . . - - - - - - - - - - - - - - - - - - -SW:IE� - - - - - - - - - - - - - - PIEZOMETERS . 0 - . . . . . . . . -sT . . . . N 18 .406-9a - - - - : -Bo:r-E 18 ;_7 -----------o......... P- - - - - - - - - : . . . . ..TOB.'8 1 "N&IE .40 6"8 7- - - - - - - - - - - - - - - Ld sp­e-�-- ......... ........... --------------------------- ........o----------------------- --- 90-V t 0 . . . . . . . . . . . . . . . . . . : . . . . . . . . : . . . . . . . . . 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LO - - - - - - - - - : : - - - - - - - - - - - - - - - 1 _ .LU. . . . . . . . . . . . . . . . . -03 . . . . . . . : - - - - - - - - - : - - - - - - - - - ----------------- .........-------------------- SP 00 ml OD F_m ------- ---------------:------------------ ........­.... . . ........ - --------- ---------- ELS UNK - . . . . . . :410 : - - - - - - - 0 - - - - - - - - 41.0 N�11 I : - - - - - - - - - - * - - - / 0 . . . 3 413.5+ B-8 . . . . . . - - - - - - - - - : - - - - - - - - - : . . . . . - - - - - - - - . . . . . . . . . ds GRAVEL ROAD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . : 0 . . . . . . . . . . . . . . . . - - - - - . . . . . . . . . - - - - - - - - - - - - - - - - - . . . . . . . . . . . . . . . - - - - - - - - - C'14- 9.. < LU LLI Lj . . . . •. . - - - - - - - - - - - - - '01 . . . . . . . - - - - - - - - - . . . . . . z ----------------o---------------------- ------ ----- -------- --------o ...................... ...........................o.......... ......... 0- ------------_" CHAINLINK FENCE FENCE CHAINLINK FENCE m (D 405 WOOD FENC/ CJ cn 25 LF 18" CPEP 52 LF 18" CPEP <�> # 206 00 C) 11 405 POST IN 184999.0170 Z*z 0 m 'w, '6 n_ @ 0.20% @ 0.20% bi E 1312679.3410 m 10 (.0 co CLEAR WETLAND BUFFER. -"4- 0 1 "�-0 c"I 0) Z_ I - ---I u cq 0(D GAP IN D 20-, 0) (.0 N 0 0 -0 om (n Nt 0 cq to 5 co FIENCELINE _j 1� r: REPLANT WITH CITY OF RENTON F_ ASPHALT I�' 11 11 0 r� c6 0 > > > NATIVE VEGETATION 3: ACCESS ROAD > 11 MZ NOTE PROFILES ALONG LONGEST PIPE CIL IN THIS VIEW M r, D z a: 0q- "(0 C RP. 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PER RENTON STD DWG BR : - - - - - - - - - : . . . . . . . . : 111 ' ' , . . . : 0 . . . 1 ­ 11 : - - - - - - - - - : . . . . . . . . . : - - - - : : - - - - - - - 0 - : . . . . . . . . . - - - - - - - - - : - - - - - - - - - : - - - - - - - 6 : H ' _ II-_ : : . . . . . : . . . . . . . . . : - - - - - - - - - : - - - - - - - - - : [CA . - I - - � . . . . . . . . . . . . : . . . . . . . . . : - - - - - - - - - : , * . . . . . . 0 : . . . . . . . . . : 11 , 011l ' ' : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : . . . . . * . . . : - - - - - - - - - : * . . . . . . . : : : . . . . . . . . : . . . . . . . . . : - - - - - - - - - : . . . . . 0 . . . : - - - - - - - - - : - - - - - - - - - : . . . . . . . . . : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - - ­ ­ . : 0 ' ' ' ' ' ' ' ' : ' ' ' ' _ - - " ' : ' ' ' ' ' ' 0 'CHAIN' LINK- FENCE- - - - - - - : _ _ _ . . . . . . . . . . . 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I — : - - - - - - - - - : _ ­ - - - - - - : . . . . . . . . . : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : , . . . . . n : - - - - - - - - - : , * . . . * , * , : , , 0 - - - - - - . . . * . . . . . : . . . . . . . . . : , , * , 0 0 . . . : - - - - - - - - - : - - - - - - - - - : . . . . * * , , : - - - - - - - - - : - - - - - - - - - : . . . . . . * , 0 : - - - - - - - * , : . . . * * - - - - : - - - - - * , , , : . . . 0 . . . . . : . . . . : - - - - - - - * : - - - - - - - - - : - - - - - - - - - : - - - / I : . . . . . . . . . . . . . . . . . . . : , * . . . . . . . - - - - - " * , , : - - - : : - : . . . . . . . . . : , * - - - - - - - - - - - - - - - - : . . . . * . . . . : . . . . . . . . . : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - •: 0 - - - - - - - - : , * - - - - - - - : . . . . . . . . . : , , 0 - - - - - - : , * . . . 0 - - - : - - - - - - - - - : - - - - - - - - - : - - - - - * . . . : - - - - - - - - : ----- - - - - - : - - - - - - - - - : - - - 11 ff­ZZZ:::::� HANDHOLDS : - - - - - - - 0 - : . . . . . . . . . : . . . �j 0 - - - - - - - - - : - - - - - - - - - : * . . . 11 . . . : ' , - - - - - - 0 : . . . . * 0 . . . : . . . . * . . . . : - - - - - - - - - : - - - - - - 111 : 11 , - - - - - I - - - - - - - - - . . . . . . . . : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - * . . . . . : . . . . . . . . . : . . . . . . . . . . . . . . . . . . : - - - - - - - - - : _ _ _ z : . . . . . . . . . - - - - - - - : - - - - - - - - - : - - - - - - - - - : . . . . . * - - - : . . . . . . . . . . . . . . . . . . . . . . . . - /I L_ : . . . . . . . . . . : - - - - - - - - - - - - - * - - - * : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : , * " . . . . 0 , : - - - - - - - - - : . . . . . . * , , : . . . . . . . . . : . . . . . * . . . : . . . . . . . * , : 1 * 11 " ' ' I . :2 4" MIN . . . . . . . . . . . : . . . . . . . . . : - * - - - - - - - - - - - - - * . . . . . . . . . . . . . . • - V. :_4_15.- - - - - : - - - 16" MAX STING G-ROUND - - - - - : . . . . . . . . . : - - - - - - - - - : - - - - - - - - - •: I - - - - - - - - : - - - - - - - - - : * - - - - - - - - : . . . . . * I I , : . . . . 0 - - - - : . . . -!-:--:._�. . . . . . . . . . . . . . - —/ 1. — mm : I - - - - - - .-..-..-. .-..-.-...-..-..-.-0..- - : - - - - - - - - - : - - - - - - - - - : EXI - — - 2 t - - - - - - - - : , * , , — ._:_=. . �. -__ - . —. �. —. . .�. . . . . . �. .�. . — —. . . . . . . . . : . . . * * . . . . : . . . . . . . : , , I - - - - I - : . . . . . . . . . . . : , * - - - * . . . _�- w 0 w . . . . . . . ...... . . . 0 . . . . . . . . . . . . w � � . . . ­ —- - - : , , . : - - - 0 - - - - - : - . � . . . . . . : . . . . . . . . . : . . . . . . . . . I . . . . : . . . . . . . . . : . . . I 0 - - - - - 0 . - . . . . : . 0 . . . . . . . : - - - - - - - - - : . . . . * . . . . : - - - - - - - - - : - - - - - - - : - - - - - - - 4. .. . . . . . - - - - - : . . . . . - - - N . . . . . . . . . . . . . . . . . . : . . . . . . . . . , , 0 , a , , * . . . : . . . . . . . . . : - . * . . . . . * . . . : * - - - - - - - - : . . . . . . . . . : . . . . . . - - . : . . . . . . . . . : . . . . . . . . . : . . . . . . . . . : . . . * . . . . . : - - - - - - - : . . . . . . . . . : - - - - - - - - - : . . . 2 z , - , , . . . . : - - - - - - - - - : . . . . . . . . . : . . . . . I: . : , * . . . . . . . : . . . . . . . * , : . . . . 0 . . . . . . . . . . . . : 0 . . . . . . : . . . . . . . . . . : . . . . . . . . . : . . . . 0 . . . . : . . . . . . . . . : . . . . . . . . . : , * , * - - - - - - - - - - - - - - : . . . . 0 . . . . : - - - - - - - - - : w . . OVERFLOW ELEV. I - : I , , I I . . . . : , * , , * . . . . : . . . . . * - - - - - - - - - - - - : - - - - - - - * , : , ­ - - - - - - - - - - - - - - - - - - - - - - - - - - : . . . . . . . * , : , * 0 . . . . . . : , , 0 - - - - - - : . . . . . . . - : . . . . . . . . . : . . . . STANDARD GALVANIZED . . . . . . . . . . . . . : . . . . . . . . . : . . . . . . . . . : . . . . 0 . . . . : - - - - - - W , : - - - - - - - - : , * * - - - - - - — : , * - - - - - - - : , , * , , 0 . . . : . . . 0 . . . . . . * - - - - " , , : o - - - - - - - : - --,;,—EXCAVATED- - - � - : - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - � � - - : 0 0 . . . . . . . : . � - - - - - - - : . . . . . . . . . : . 0 . TO PROVIDE DETENTION I : - - - - - - - - - : . . . * : 0 - - - - - - - - - - - - - - - - - : . . . . . . . . : , " - - - - - - - - - - - - - - - - : - - - - - - - - - : - - - - - 0 - - - : - - - - - - - - - : - - - - - - - - - : - - E OLOGY:BLOCK -WAw-- - - - - - - - - - : . . . . 0 1 0 , : . . . . . 11 I . . . . . : 0 - - - - - - - - 4' — ELEV. / STEEL LADDER/STEPS : . . . . . . . . . : . . . . . . . . . : - - - - - - - - - : . . . . . . . . . : - - - c : - - - - - - : . . . . . . . 0 . : . . . . . . . . . . . . - - - - - . - . . . 0 .- : . . . w - - - - : I - - - I . . SIDE SLOPE : -1- - - - & OIL SEPARATION . . . w . . . . . : . � - - - - - - - - - - - - - - - - : - - 0 - 0 - - - - - - . . . . . .. . .4 _Q_- : : - - - - -A. , - __. . - - - : . . . . . - - - - ... . . . : . . . ,,----- ,------- - - - - - * " ------ ,-----_ _ ,------ ,,---* " - ,,-----_ _,----,0 -_ - ,,,-- ,,--_ _I---- ,,,-I_ _ _ __ __ _ , ,,---— -_ _-- ,,,-- ,_ "_ �_ —,-----0 0 ----_ _0-"---- ,,----- I �N ' 4 1 3- -. 4 1 - - - - 7 0 --------------­---------- - ------------- . . . . . . . . : , * . . . . . . . : . . . . . . . . . : . . . . . . . : , . - . . . . . . - - - - : - - - - - . . . . . . . : . . . . . . . . : . . . . 0 , ­ : . . . . . . . . . : . . . . . . . . . : , : . . . . . . . . . : . . : ­ � . . . : . . . . . . . . : . . . - - . . . . . : ­ 0 . . . . . * : , . . . . . . . . : . . . * . . . . . : - - - - - - - - * : - - - - - - - - - : . . . . . . ., . . . . - - - . . . . . : . . . . . . . . . : --I-,-,-,-,-----, : :---------- I.O.: . - - 0- - : - - - - - - - - - : , * . . . . . . . : . . . . . . . . . : , o . . . . . . . : * * - - - - - - - - : : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : 1 . . . I — ' : * - - - - - - - : , ' ' , - - - - - : - - - - - - - - - : - - - - - , - - , : - - - - - - - - - : - - - - - - - - - - - - - - ­ w . . : . o . . . . . . . : . . . . . . . . . . , 1111 , + . : , * - - - - - - - - - - - - - - - - : - - - - - - - - - : - - - - - - - 0 , : - - - - - - - - * : . . . . . . . . . I - - - - - - - * 11 ­ 11 ­ 1 . . : - - - - - - - - - : - - - - - - - : , , * * - * - - - : . . . . . . . . . : ­ . . . . . . : - - - 11;i - - - - - - O . . ____ : - , * . . . 111 : 1 . . . . . . . . . . . . . . . . . . : - - - . : - - - - - - - - - : ' ' , " , w . : . . . . . . . . . : . . . . w . . . . : . . . . . . . . . : . . . . . . . . . : . . . . . . . . . : 111111 - - * : , - - - - - - - - 1. 1 2' MIN - I ­ 6 - : - - - - - - - - - : - - - - - - - - w : - - - - - - - - - : - - - - - - - - - :.4-.0,5.- - - 0 - : - - - PIPE SUPPORT tSFf---____ .F : ,.-.-_-_w.4Q.5-_: . . . . . . . . . : . . . . - - : - - - - - - - - - : •- - - - - - - - - : - - - - - - - - - : POND- BOTTOM- EL=40 ...........:... -:................... .....:......... :,11110­0*011. : . . - . . . . . . : . . . . . . . . . : . . . . . . . . . : . . . . . . . . . : . . . . . . . . . . : . . . . . . * , , : . . . . . . * , , : , * * - - - - - - : , , I I . . . * I : . . . * . . . * , : . . . . . . . . . : . . . . . . . . . : - - - - - - - - - : . . . . . . . . . : . . . . . . . . . : . . . . . . . . . . : . . . . . . . . . : . . . . . . . . . : . . . . . . . . . : . . . . . . . . . : I I - I I I - - - : I - - - - - - - - : . . . . . . . . . : - - - NOTE 3) 3% .075" . * : . . . . . . . . . : . W . . . . . . . : . . . . . . . . . : . . . . . . . . . : - - - - - - - - - : - - - - - 0 . . . : . . . . . . . . . : - - - - - - - - - : . . . . . . . . . 0 I " I - , : : - - - CL R GATE : . . . . . . . . . : . . . . . . . . * : - - - - - - w , , : . . . . . . . . . : . . . . I . . . . : - - - - - - I - , : . . . I - - - - - : - - - - - - . : . . . . . . . . . : . 0 . . . 0 . . . : . . . . . . . . w : . . . . . . . . . : , , ALUMINUM OR .079" � 8" DIAMETER MIN. : * . . . . . . . . : - - - - * . . . . : . . . . . . . . . : 1 - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : . . . . * . . . . : . . . . . . . . . : . . . . : . . . ­ ­ : ' ' ' ' , - - - - : _ . . . . . . : _ . . . . . . . . . . . . . . . . . : . . . . . . . . . : . . . . . . . . . . . . . . . . . . . . . . . . . . . : . . . . . . . . . : . . . . . . . . . . . . . . . . . . - - STEEL (SEE DWG NAME D-27) , ' - - : . . . . * * . . . : . . . . . w * 0 , : ­ * - - - - - : . . . * . . . . . : . . . . * . . . . . . . . : . : -HORIZONTA�:- V`-20' : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : . . . . . . . . . : . . . . . . . . . : . . . . . . . . . : . . . . . . . . . : . . . 11 - - - - : I I I 11 10 I - : . . . . . . . . . : - : . . . . . . . . . : . . . . . . . . . : - - - - - - - - - : * - - - - - - - - .. . . . . . . . . . : - - - - - - - - - - - - - - - - - - - - - - - - - - - - - : - - - - - - - - - - - - -- - - - - - - : . . . . . . . . . : . . . . . . . . . : . . . . . . . . . : . . . . . . . . . : , - w ­ 11 1 , : - , I 11 11 I I : . . . . . . . . . : , \ : . . : . . . . � w . . . . . . . . " 0 1 - OUTLET PIPE INLET PIPE _ : - - - - - - - - - - . -VERTICAL- : :I - 17­� . . . . . . . . . . . . . : . . . . . . . . . : . . . . . . . . . - : . . . . . . . . . : , - --ot— .0L_ ---..C— . . . : 11 - - - - I 0O - A. . . .A. . . . . . . . . . : - - - - - - - - - : I - - - - - - 11 . : . . . . . . . . . : , - , - * - - - - : . . . . . . . . . : . . . ­ ­ : ' ' , - - - - - - : - - - - - - - - - : - - - - - - - - - : . . . * * , . . . : . . . . 0 * SECTIN : : 5 : . . . . . . . . : - - - - - - - - - : . . . . . * . . . : - - - - - - - - - : . . . . . . . . . : - - - - - - - - - : . . . . . . : - - - - - - - - - - - - - - - - - - : - ........:------ --------- ..............:0...............O..:...................:--------­­.....:--------- :-------------- :------ SEE NOTES 5,6 . ............................. . - , . . OR PIPES :...*---------- . : . . . . . . . . . : , , : . . . . . . . . . : . . . . . . 0 - , : * - - - - - - - - : . :-­62­FiKN-----:7770------------:' . . 0 0 . . . : . . . . . . . . . : . . . . . I I I * : , , I I I I I I I : . . . . . . . . . : , ­ : : , , I I , 0 . . . : , 0 . . . . . . . : - - - - - - - - - : - - - - - - - - - - . . . . . : . . . . . . . . . : . . . . . . . . * : 0 - - - - - - - - : . . . . . . . . . : - * * I I I I I - : I * * I . . . . . : - - - - - * . . . : . . . . . . . . . : - - - - - - - - - : . . . . . . . . . : . . . . . . . . . : . . . . . . . . * : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : 'CHAIN-. LINK FENCE- - - - : - - - - - - - - - : ' ' ' ' ' : - - - - - - - - : . . . . . . . . . \ : , w - - - - - - - : . . . * . . . . . : . . . . . . . . . : , * . . . . . . . : - - - - - - - - - : ­ . . . . . . : - - - - - - - - - : . . . 0 . . . . . : ' , - - - - - - - : - - - - - - - - - : - - - - - - ­ : _ . : - - - - - - - - - : - - - - * * ' ' , : . . . ' ' I ' ll . : . . . ­ , ' ' : 1111 * 11 - 1 : . . . . . . . . . : * , o - - - - - - : - - - - - - - - : - - - - - - - - - : - - - - - - - - - : 1 - - - - - - , - : - - - * - - - - - : . . . . . . . . . : - - - - - - - * , : - - - - - - - - - : . . . . . . . . . : _ . . . . . : - - - - - - - - - : - - - - - - - - : - - - - - - - - - : - - - - - W , O , : - - - - - * - - - : . . . . . . . . . : - - - - - - - - - : - - - - - - - - - : - - - - * - - - - : . . . . . . . . . : , z . : . . . . . . . . . : - - - - - - - - - : - - - - - - - - - : - * - - - - - - - : - - - - - - - - - : . . . " - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - . .- .- ..- ..- ..I .I .- .- *-- .-- .-- .-- .-- .-- .-- .-- ,I. ,.. *.. ... ... .*. .*. .,. - - - - - - - -.-. -.. -. -.. .- -. *.. ., .., ..* ..- ..- . .*- .,- - - - - - - - --.- -.- - - - - -.- , , .- .- .- ..-- ..-- .*-- - - - - - - - -- - --- - --- - -.-- * * .-.- . .-.- -. . .-.- - - - - - - - -- - -0. --. - - - I -,I -,I - -. -*. -,. -I- --- --- --- --- --- --- --- - - - - - - - -.-. -.. -.* -.. - -. - .-- -. . *- --- --- --- --- - - - - - - - --.. -.. - --. --. - -. - 0 --- --- --- --* - --, . .. . W. I.. .I. .I. I.. .. ..I . ., ..* .., . . .. ,,. ,,. II. IIw . .. .I. --, - - INVERT ELEV. j ,.....,. . i ' . . . . ^ . . . . ­ . . . . * ­ I . . . . . * , . . . . . . . . , * . . . . 0 , - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - . . . . . . . . - 0 I I INVERT ELEV. : , - 6 : : • 0 - - - - - - - - : ..0 : :---"I---- 4 2 _ PER PLAN - - - - - - - - - - - - - - - - - - - , I . . . . II III . . . . . - - - - - - - - . . . . . . . . - - - - - - - - - - - - - - - - - - - - - - - - - 0 . . . . . . . . . . . . . * IIII - - - - I . . . . , II - - - - - - - - - - - - - - - - - - - - - - - . . . . - . . . . . . . . . . . - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - I . . . . . - - - - - - - - - . . . . . . . . . - - - - - - - - - . . . . . . . . . * - .:4 N . . . . .-.-' . - - - .- - - - -..-- - .-.-- . . . . . ..-- . . .. . . . . . . *.. , - - --- --- - - - ---- ---- :: , * 0 . . . . ... . . . . . . . . . . , * - - - - - ---- - , * ---- - --- --- - --- - . . -.-. . . . . . , *. - - - - * , A f , —.- . . ..- . I . . . . . . . - -.- -.- -.- -.- - .-- ­-- W.- -.- -.- _-- .-- .-- ,4 z - . - - - . . . ' ' * . . . . . 0 - - - - - - 0 ' ' . . . . . . . . . . . . . . . . . . - - - - - - - - - . . . EXISTING -GROUND ' ' - - I . . . . . . 0 . . . . . . . . . . . . - - - - - - - - 1 - - - - - - - - . - - - - - - - - - . . . . . . * I , - , II - - - w - - - - - - - - - - . - - - w - - , - . . . - - - - - - I . . . . . . . .! : MIN 0 :,*"*..... 42 . - . . . 6 .H f ­-.... ... o....*111 . . . . . . . I. . . . . . - - - - - - - - - - - - - i - - - - - - - - - - - - - - - - - . . . ATE DIAMETER _:4 * * - - - - - - - - - - CHAIN - FENCE * - - - - - . . . . II , , - - - - - - - . . . . . . . . - - - - - - - - - - - - * . . - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - . . . . . . . . . . . . - - - - - - - - - - - - - - - 0 - - - - - - - . . . . . . . . - - - - - - - - - - - - - - - - . . . . . . . . . , * - - - - - - - - - WITH ORIFICE , , III . . . . . . * . . . - - - - - - - - - - - - - - - . . . . * . . . - - - - - - - - . . . . . . . . - - - - - - - - - - - ,- - - - - - - - - - - - - - - - - i..-..-..- I- ...I..- - : - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - 0 - : - - - - - - - - - : 0 - - - - - 0 - 0 : . . . . . . . . . : - - - - - - - - w : - - - - - - - - - : - - . . . . . . . . . . � . : . . . . . . . . w : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : (SEE NOTE 9) _ : . . . . . . . . . : ­ . . . _?�-o . . . . . . : - - - - - - - - : - - - - - - - - - : : . . . . . . . . _ - - - - - - l " : . . . . . . . . : , * - - - - - - - : . . . * 0 . . . . : ­ 0 . . . . . . : - - - - - - - - - : , * , - ' ' * ' ' : . . . . . . . . . : - - - - - - - - - : , ­ . . . . . : . . . � : - - - - - - - - : SECTION A—A : - - - - - - - - - : . . . . I . . . . : . . . . . . . . . . ' ' I - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : . . . . . . . . . : . . . . . . . . . : 1111 - , ' ' : , 11 . . . . . . : . . . . . . . . . : . . . . . . . . . : . . . . * . . . . : - - - - - - - - - : . . . . . . . . * : - - - - - * . . . : - - - - - - - - W : - - - - - - - * - : - - - - - - - - - : - - - . . . . . . . . . : - - - - - - - - - : - - - - - - - - - : - - - - - - --- - : ­ lll _ l _ : , , l . . . . . . : . . . . . . . . . . . . . . . . . . : . . . - - - : . . . . . . . . . : : . . . . . : . . . . . . 1 - - - - 0 - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - 0 - - - : . . . . . . A�WMNA' IkY P' O' N' b- WA-TER' 'EL_E!-V_"bk!r' 0 'o ' :: . . . . 0 . . . . : . . . . . . . . : . . . . * . . . . : - - - - - - - - - : . . . . . . . : - - - - - - - - - : . . . . . . . . . : - - - - - - - - - : ............. . 0 , : - - - * * . . . . : - - - - - - - - - : : , - 415 : - - - - - - - - - :WEST - -PL- - - - - - - - - - : - - - :-------------- .00............ ............... : I I I I I I , , - : - - - - - - - - - : •. . . . . . . . . . . . . . . . . . . V_ -EMERGENCY OVERF —3 . . . . . . : . . . . . . . . . : : : LOW-AVS- ff- 14o2- ? - - - - - : - - - : - - - - - - - - : . . . 0 - - - - - : - - - - - - - - : . . . . * . . . . : - - - - - - - I •- : I - - - - - - - - : . . . . . . . . . : - - - - - - - - - : . . . . . . . . . . . . . : - - - - - - - - - - - - - - - - - * . : . . . . . . . . . : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - REMOVABLE 11 v - - : . . . * . . . . . : - - - - - - - - " : . . . . . . . . . : . . . . . . 0 , * : - * , I . . . . . : - - - - - - - - - : " * . . . . . . . : . . . . . . . . . : . . . I . . . . : .__l . - ? - - - - - : - - - - - - - - - : - - - - - - - - - : . . . . . . . . . •: . • . . . . . . . . . . - - - - - - . . . 6M0" : - - - - - - - - - : . . . * - - - - - : - - - - - - - LOW- WS- EL-313.5 . . . I . . . . . . . -V--. . � - : . . . . . . - - - - - - - - - - - - - - - - * , , : - - - - - - - - * : - - - - - - - w , : . . . . . * . . . : . . . . . . . 0 , : * - - - - - - - - : . . . . . . . . . : - - - - - - - - - : , * , * , * . . . : - - - WATER-TIGHT : , — - - . . �__. . . - . . . - ? - - - - - : - - - - - - - - - - - - - - - - - - : - - - - - - - - - : - - - - - 0 - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : . . . 0 - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - COUPLING . . . : - - - - - -bE'S'lbN' - WS- EL-313.0 . . . . . . . . . . . . . . 1� : , o - - - - - - - : . . . . 10 . . . : . . . . . . . . . . . . . . . . . . . . . . . . . . . . : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : ' , - - - - - - : - - - - - - - - - : , 11 , . . . , * : , , - , * . . . : 11 . . . . . , * : - - - 11 - - - - : 1 - - - - - - - - : . . . . . . . . . : - - - - - - - - - : , : . . . . . . * , : O , * - - - - - - : - - - - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : ' ' I - - - - - - : . . . . I - - - - : : - - - - - - - - - : I I - - - - - - - : - - - - - - - - - : - - - - - - - - : - - - - - - - - - : - - - - - - - - - : . . . . . . . . . : - - - - - - - - : . . . w - - - - - : - - - - - - - - - : , , 0 . . . * , : . . . . . ­ , : , ­ . . . . * : . . . . * . . . * : - - - - - * - - - : * 0 - I I - - - - : . . . . . . . . . : . . . . . . . . . : . . . . . . ­ : ­ :> : . . . . . . . . . : . . . . . . . . . : , " . . . . . ­ i - - - w . . . . . : . . . . . . . . I , . W . . - - - - - - : . . . * . . . . . : - - - - - - - - - : ­ - - - - - - : - - - - - - - - - : . . . . . . . . . . . . . . . . . . : . . . . . . . . . : . . . . * - - - - : . . . . . . . * * : . . . * * . . . . : * . . . . 0 * * , : . . . . . . . . . : - - - - - - - - - : - - - - - - - - - : , * - - - - - - - : . . . * " , O * - : - - - I ,----- ,--- ,---- __ - _ _ , _ ,,------ — W 7� - - - - - - - __ 0 - "' --'-'_- 0 - - - - - - . - 41 0 : . . . . . . w * , : . . . I 0 - 0 \�E � MINDETAIL I. 0 :...... ............ : . . . . . . . . . : - : . . . . . . . . . : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - * : . . . . * . . . . : , . . . . . . . : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - * * - - - - - - : . . . . . I . . . : - - - - - - - - - : , - I I I I - - I : . . . . . . . . . . . . — : 0 - - - - - - - - : - - - - - I * , , : - - - - - - - - - - 0 - - - - - - - I : - - - - - - - - - : . . . . . . . . . : - - - - - - - - - - - - - - - - - - - : . . . . . . . . : - - - - - - * , , : - - - - - - - - - : - - - - - - - - - : . . . * . . . . : 0 . . . . . . . . : - - - - - - - - - : - - - - - I . . . : , * * - - - - - 0 : - , w - - - - - w : . . . . . . . . . : - - - - - - - - - : - - - - - I I , , : - - - - - - - - - : - - - - - - - - - : . . . . . . . . . : . . . . : . . . . . . . : - - - - - - - - - : - - - - - - - - I : I I - - - - - - - : . . . - - - - * : . . . . . . . . . : - - - - - - - - - : - f - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - * - : - - - I : . . . . . . . . . : - - - - - - - - - : - - - - - - - - - - - - - - - - - 0 . . . . . . . . . : . . . . . . . . . : - - - - - - - - - : - - - - - I . . . : . . . . . . . . * : , , I I . . . . . : * - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : , , * - - - - - - : . . . . . . . I I : I I 1 6. : . . . . . . . * , : . . . . . . * * , : - - - - - - - - - - - - - - - - - - - - - - - - - - - : . . . . . . . . . : . . . . * * . . . : - - - - - - - - - : . . . . . . : 0 . . . . . . . . - - - . - : - - - - - - - - - : - - - - - - - - - : . . . . . . . . . : , , : . . . . . . . . . : , I , , I I . . . : I I I . . . . . I : . . . . . . . . . : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - I MIN - - - - - - - - - - - - - . : . . . . . . . . . , : . . . . * 0 * " •, : . . . . . . . . . . . . . - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - . . . . . . . . . . . . . . . . . . . : - - - - - - - - - : - - - * - - - - - : - - - - - - - - - - EXQ,AY�-A�.TED. . . . . . . . : : - - - - - - - - - : . . . . . . . . : : : . . . . . . . . . : . . . . . . . . . : . . . . . . . . . : . . . . : A iA - � _ - - . . . . . : , , I I - - - - - : - - - - - - - - - : - - - - - - - - - : . . . . . . . . : - - - - - - - - - : - - - - - - - - - : 0 . . . . . . . : . . . . . . . . . : - - - - - - - - - : - - - - - - - - - : - - - , - : - - - - - - - - - : , , : - - : - - - - - - - - - : - - - PLATE WITH - . . - , : , , I - - - - - - : I - - - - - - - I : . . . . . I , , J/ -1,­ - : - - - - - - - - - : 11 , . . . . . . : . . . . . * , F7_I r:�n : - - - - - - t6 : - - - - - - I I , : I I I I - , SIDE -SL.(n- - - - - - : - - - - - - - - - : � - - - - - - - - : - - - - - - - - - : . N-1, I " ORIFICE AS �A/ ' 0 0 . . . . . . . . . . . . . : POND BOTTOM EL=406 :.............. \ "'**'. : , - 4 : - - - - - - - - - : - - - - - - - - - - - - - - ---------0:...................:. :------------------- I ELBOW :-:------------ - : . . . . . . . . . : , I I I . . . . . : . . . . . . . . . : . . . . . . . . . : - - - - - - - - - : . . . . . . . * , : - - - - - - - - - : . . . . . . . . . : - - - - - - - - - : - - - - - - - - - : - I - - - - - - - : - - - I . . . . . : . . . . . . . . . : , * I * I , I , , : I I I I . 0 . . . : - - - \� SPECIFIED : * - - - - - - - : . . . . . . . . . : ­ . . . . . . : ­ . . . . . . : . . . . . . . . . . - - - - - - - - - : ­ 1 . . . . . . . � . . . . . . . . . : - - - - - - : . . . . . . . 10 . . . 11 , . . . ol - : - * - - - - - - - : . . . . . . . . . : . . . . . . . . : - - - - - - - - - : . . . . . . . . . : . . . . . . . . . : - - - - - - ­ : . . . * . . . . . : 0 , * - - - - - - - - - - : . . . . . . . . . : . . . . . . . . 0 . . . . . . . . . . . . . . - : - - - - - - - - : 0 - - - - - 0 , , : - - - * - 0 - 0 - : - - - - - - - - - - - - - - - - PLAN I A I I VIEW I—I�I : , , * . . . . . . : , , 0 - - - I , , : * - - - - - - - - : - - - - - - - - - : - - - - - - - * , : - - - - - - - - - : - - - - - - - - . . I : . . . * . . . . . : , 0 * . . . . . . : . . . . . . . . . : - - - - - - - - - : * . . . PLAN VIEW 12/96 REFORMAT TO ll"x`17" I : . . . . . . . . * : . . . . 0 . . . . : - - - - - * ' : H0R1ZONM-:- I7 -= -20 - : - - - - - - - - - : - - : - - - - - - 0 , - : : ­ * : - 1 - - - - - - - : . : , , ._. . . . . . . . . 0 . : - - - - - - - - - - - - - W ' ' , - , 0 - - - - - - - : * . . . . . . . : . . . * - - - - - : ­ . . . . . . : . . . . . . . . . : . . . . . . . . . : - - - - - - - - - : - . 0 . . . . . . : . . . . . . . . . : - - - - - - - - - : - - - . : . . . . . . . . . . . . . . ; , : .1.". .:-, . : . . . . . . . . . : . . . . 0 . . . w : - - - - - - - - - : ­ - - - - - - : - 0 - - - - - - - : - - - - - - - - - : - - - - - - - - - : ­ - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - . . . : . . . . . . * ' ' : B . . . E3 . . . . . . . : VERTI-CAL. . : - - - -:-. - - - : . . . . . . . . o . . . . * * ' : - - - - - - - - - : SECTION ' : ' 5l : - - - - - - - - - : - - - - - - - - - : ... . . . . . . . : --- - - - - - - - : - - - - - - - - - : - - - - - - - * * : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - -- ---I-------0....:...................:-------------------:------"I----------:-------101,--------:-------------0.....:.....I :"*",,----­­ . - . . . . . . . : - - - - - - - - - : - - - - - - - * - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - : * : - - : 10 , 1111 - , : * - - - : , * ' ' ' ' , - , : , - - - : * , : * - - - - - - - - : ­ , ll ­ : l * . . . . ' ' , : , * - - - - - - - : . . . . ­ ­ : , ' ' . . . ­ : - - - - - - - - - : - - - - - - - 0 , : - - - - - - - - - : - - - - - - - - - : . . . . . . . * , : . . . . . . . . . : . . . . . . . . . : ­ . . . . . . : - - - - - - - - - : - - - - - - - - - : 10 , . . . . . . : . . . . . . . . . : , _ 0 - - - - - - : 111 , . . . . . : . . . : . . . . . * . . . : - - - - - - - - - : . . . . . . . . . : . . . . . . . . . : - - - - 11 . . . : . . . . . . . . . : - - - - - - - - - : , * * ' * . . . . : - - - - - - - - - : - - - - - - - - 1 : 1 ­ . . . . * , : . . . . . . I — : . . . I - - - - - : . . . . . I — : - - - - - - - - 1 : - - - - - - - - - : 001 , . . . . . : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - : ­ , l ­ * , : l . . . . . . * , : * - * . . . . * , : - - - - - - - - - : - - - - - - - - - : . . . . . . . . . : - - - - - - - - - : . . . . . . . . . : - - - - - - - - - : . . . * - - - - - : , 101 . . . . . : . . . . . . . 0 0 : 1 - - - * - - - - : - - - - - - - - - : * - - - - - - - - : . . . . . . . . : 111 , - - - - - : - - - - - - - - - : - - - - - - - - - : 0 - - - - - - - - : - - - CB #� l CONTROL STRUCTURE : * , o . . . . . . : - - - - - - w ' ' : . . . . . * . . . : - - - - - - - - - : . . . . . . . . . : . . . . . * - - - : , - * - - - - - - : . . . . . I I ' ' : - - - - - - - - - : - - - - - - * ' ' : - - - - - - - - - : - - - - - - - - - : - , * - - - - - - : - - - - - - - - - : - - - - - - - - - : - - - - - - - - - : 0 . . . . . . . . : . . . . . . . . . : - - - - - - - - - : . . . . . . . . . : . . . : * . . . . * * : - - - - - - - - - : - - - - - - - - - : ­ . . . . . . •: - - - - - - - - - : - - - - - - - - - : . . . . . . . . . : - - - - - - ­ _ : - - - - - - - - - : . . . * . . . . . : - - - - - - - - - : . . . . . . . . . : - - - - - - 0 ' ' : . . . . . . . . . : - - - - - - - - - : - - - - - - - - - : 11 , 10 . . . . : - - - - - - - _ : - - - - - - - - - : . . . . . . . . . : . . . ........:...... --0...............:........00.0­­.:...... ---- - :-------------- . . . . . . . . . . . . . . . . . . . . 0 . . . . . 0 . . . . . . . . . . . . . . . . . . . . . . . . . . . � - - - - - - - - - - - - . . . . . . 1 - 11 , - - - - - � . . . . . . . . . . . . . . . . . . . . . . . , 0 . . . � . . . . . . . . . . . . . . . . . . . . . . � m a : w ft m m . . . . . . . . . . . . . . . . . . . . . 0 — .-. . . . - — 0-. _. .-. . . . . . . . - - - - - - SCALE: NTS SEE RENTON STD DETAIL BR-04 FOR NOTES - PROFILE SCALE: AS NOTED - us-- 4. = = CB #11 OVERFLOW TOP SCALE: NTS SEE RENTON STD DETAIL BR-13 FOR NOTES 30 % PRELIMINARY DESIGN sulffi&lym. samr- DATE. CH2M HILL VgZnCN- M 19M 1 11=20' HOWOKAL: W VD 19W/INI 416 CITY OF NE 10th STREET/ANACORTES AVE NE 11 -12-2002 k — OESK*El R. CHUNG I - '14 DETENTION POND PROJECT FIEU)BOOK- I ma PAGE_- DRMW. J. PRETS . 011E WH DATU M * RENTON PLAN & PROFILES DRAWING NO- - I I I CHECKM I­_._T FULL SCALE I Planning/Building/Public Works Dept. DETENTION POND CROSS SECTIONS R. ADAMS IF HOT ONE WCH I CH MHILL SCALE ACCORDINGLY — I I NO. I REVISION BY I DATE I APPR 17;;;� PLAT11. I I I SHEET: 6 OR 8 IAI-ININININIATA I