The 2021 Snohomish County Drainage Manual, as adopted on June 28, 2021. King County Drainage Manual At right time intetval detetmined by king county planning to drainage area with the. The term "landslide hazard drainage area" in the King County Surface Water Design Manual shall have the meaning of "landslide and erosion hazard area" as defined in Chapter 13.05 UPMC, Article II, and classified in UPMC Title 17. Update. Future revisions and additions will be highlighted on this Web page. . were repealed 7 years ago. ("KCSWDM") means the City's adopted Storm Water Manual that sets forth the drainage and erosion control requirements, BMPs, design, and maintenance procedures and guidance for stormwater management. 2021 Full Stormwater Manual - Volumes 1-5 and Appendices Directors' Rules SDCI 10-2021/SPU DWW 200. Department of Natural Resources and Parks # #, 2016 . Chapter 1-Drainage Review and Requirements (1.2 MB) Chapter 2- Drainage Plan Submittal (351 KB) Chapter 3-Hydrologic Analysis and Design (1.5 MB) Chapter 4-Conveyance System Analysis and Design (2.2 MB) Chapter 5-Flow Control Design (1.5 MB) Chapter 6-Water Quality Design (3 MB) Definitions (457 KB) Appendices King County recently updated its manual to be consistent with the 2012 Ecology manual. This page intentionally left blank. King County documents in PARIS. April 24, 2016 . This King County. criteria found in section 700 of the county's design and construction standards manual in effect as of june 30, 2014. If you are a low-income senior as determined by the King County Assessor and you own your personal residence, you may be exempt from the surface water management fee. King County GIS Center King Street Center 201 S. Jackson St. Suite 706 Seattle, WA 98104 giscenter@kingcounty.gov + 47.59909 N - 122.33136 W + 47° 35' 56.72" - 122° 19' 52.90" Special Drainage Requirements . (BARS) manual, 3.1.3, Internal Control . Instructions for stormwater facility maintenance inspection (123 KB) Tips for successful drainage facility self-inspection (564 KB) For questions about inspecting your facilities, email us at stormwater@kingcounty.gov or call us at 206-477-4811. Previously the City retained this threshold from earlier King County manuals because this was allowed by the Phase II Permit. The inspection process guidance includes: Pre-inspection activities. 3 . 4.6 Maintenance Standards for Drainage Facilities ... 4-30 February 2005 Volume V - Runoff Treatment BMPs iii . KING COUNTY, WASHINGTON . Burien's surface water features (lakes, wetlands, streams, and Puget Sound) are a significant part of our natural beauty and rich heritage. TTY: 800-833-6388. iii . Keep for historical reference (retained for vested permit processing). STORMWATER DESIGN MANUAL. Property owners are encouraged to obtain at least three bids for each job, check references, and inspect the work that has been done to ensure the work has been completed as per County requirements. 4800 South 188th Street SeaTac, WA 98188-8605. This is our adopted Stormwater Manual. Pursuant to 30.82.065 SCC interested persons may request a review of the adopted rules by the County Council within 120 days of rule adoption. Chapter 5 of the Source Control (Business/Site) Inspection Program Guidance Manual (PDF) addresses the following topics: Permit Requirements. These methodologies are described in the Snohomish County Dry Weather Outfall Screening Manual, the Illicit Connection and Illicit Discharge Field Screening and Source Tracing Guidance Manual (prepared for Ecology by King County, Washington Stormwater Center, and Herrera Environmental Consultants in May 2013), and Snohomish County Drainage Manual Volumes IV and V. In lieu of a SeaTac equivalent to the County Landslide Hazard Drainage Areas Map, the City will rely on King County's map. Appendix D-Construction Stormwater Pollution Prevention Standards (1,795 KB) Updated 4/18/16 2016 Design Manual Drawings: Standard drawings from the 2016 King County Design Manual can be downloaded individually in AutoCAD DWG format. King County Drainage District No. Contact Information. Louise Kulzer King County Surface Water Management . New & Redevelopment Stormwater Management. System improvement. A-1 SERVICES, INC. P.O. VOLUMES I AND II. The most recent version of the Drainage Manual is presented and is the official source for the development and application of all drainage design related to VDOT plans. a) A conceptual or preliminary plan of the proposed drainage collection and flow control systems, based upon accurate field topographic mapping and geologic data, should be provided, along with appropriate cross-sections and details necessary to identify drainage system elements. Use the Manual and this flow chart to determine the type of drainage review required (PDF, 529KB) Basic/Simplified Review INTRODUCTION . King County Code . Rainwater harvesting rate reduction. The City of Kenmore adopted the 2016 King County Surface Water Design Manual (2016 KCSWDM) in order to be in compliance with the Washington State Department of Ecology Phase II Municipal Stormwater permit. King County manual that do not apply to proposals in the City of Kent. This set of map enables citizens to view the county's storm water infrastructure online. 2 . To comply with the City of Renton's NPDES permit requirement, the city adopted the 2016 King County Surface Water Design Manual with Amendments to create the 2017 City of Renton Surface Water Design Manual. A technical manual detailing stormwater management requirements for parcel development in King County, WA. King County. The 2017 City of Renton Surface Water Design Manual is only applicable to projects vested with a complete application after January 1, 2017. City of Seattle. If you would like to download the drainage inventory in a geographic information system (GIS) format, the zip file . 6.2.2 Surveys Hydrologic considerations can significantly influence the selection of a highway corridor and the alternate routes within the corridor. SIMPLIFIED DRAINAGE REQUIREMENTS . Box 84523 Drainage Review Types In accordance with the 2016 King County Surface Water Design Manual and City of Kirkland Addendum, there are four levels of drainage reviews to consider - basic, simplified, targeted, and full review. Backups. City Hall: 206.973.4800 Community Center: 206.973.4680. It should be noted that the Drainage Manual as presented is superseded by (1) the current . Found insideKing County , Washington , surface water design manual . 1.1 ADOPTION BY REFERENCE WITH EXCEPTIONS AND ALTERNATIVES drainage that leaves the proposed development sheet flows onto the neighboring property to the • A completely revised Chapter 1 has been provided in this Chapter 1—Drainage Review Requirements: document. The ASU Library acknowledges the twenty-two Native Nations that have inhabited this land for centuries. General permit that use of. Also applicable in other municipalities that have adopted this manual. SURFACE WATER . Office of the Washington State Auditor Page 8 SUMMARY SCHEDULE OF PRIOR AUDIT FINDINGS . General permit that use of. Elimination of the 1 acre threshold. Superceded by the drainage manual in . As of January 1, 2017, all new and redevelopment construction projects, both private and public, must comply with the 2016 King County Surface Water Design Manual. King County Code Chapter 9.04 and Chapter 9.12 as amended by Ordinance 18257, adopted on March 15, 2016. Snohomish County Engineering Design and Development Standards, as adopted January 22, 2016, Chapters 1, 5, and 11. The types of drainage review include: simplified drainage review, targeted drainage review, directed drainage review, full drainage review and large project drainage review. Effective Date: October 4, 2021. Surface water design manual (4) Flow control (5) Water quality (6) Landslide Hazards (7) Drainage complaints (8) Description: This map provides information about King County stormwater facilities, studies, and drainage projects managed by the Stormwater Services Section (SWS). APPENDIX C . 1026658 . 206-296-0192. 3 King County, Washington Pursuant to King County Council adoption of Ordinance 16264, the Department of Natural Resources and Parks adopted a public rule revising the King County Surface Water Design Manual (SWDM). King County documents in PARIS. In addition, several reference themes are included to assist SWS in . Surface Water Management Division of King County . The purpose of this addendum is to guide applicants and City reviewers in harmonizing the various requirements of the controlling documents. Stormwater Management Manual for Western Washington Volume V Runoff Treatment BMPs Prepared by: . Two other HSPF-based continuous runoff models are allowed by Snohomish County for drainage design: MGS Flood and KCRTS (King County Runoff Time Series). For additional information about Green Stormwater Infrastructure programs, please contact Tracy Tackett, Green Infrastructure Program Manager, at tracy.tackett@seattle.gov or (206) 386-0052. KING COUNTY, WASHINGTON. King County. It is to be used instead of Chapter 1 in the 2016 KCSWDM for all proposals in the City of Kent. King County Drainage Manual At right time intetval detetmined by king county planning to drainage area with the. Make low impact development the preferred and commonly . Designed to help engineers design storm drainage systems that reduce problems for downstream neighbors and minimize damage to our natural environment. 2.1.1 Discussion of Hydrologic Analysis Methods Used for Designing BMPs This section provides a discussion of the methodologies to be used for calculating stormwater runoff from a project site. Call the King County Assessor's Office at 206-296-3920 to verify your eligibility. The Drainage Manual is used in concert with Snohomish County code and Snohomish County engineering design and development standards (EDDS). Therefore, studies and investigations King County Code . SURFACE WATER . The fundamental principle is that if a project . Define King County Surface Water Design Manual. Thispageintentionallyleftblank. Development regulation. Volume I - Minimum Technical Requirements Volume II - Construction Stormwater Pollution prevention best management practices (BMPs) Volume III - Hydrologic Analysis and Flow Control BMPs Drainage facilities restoration and site stabilization For questions concerning billing, email the Utility Billing Division or call 253-931-3038. Snohomish County Engineering Design and Development Standards, as adopted January 22, 2016, Chapters 1, 5, and 11. 2021 Full Stormwater Manual with Tracked Changes - Revisions and changes from the 2016 Manual are underlined and in blue text. 201 S Jackson Street, Suite 5600. DESIGN MANUAL. In 2019, Ecology revised its stormwater design manual for Western Washington communities. Follow-up activities. the King County Surface Water Design Manual Effective Date January 1, 2017. Residential Drainage Review Requirements and Process, continued Department of Local Services, Permitting DivisionPage 3 of 8206-296-6600 35030 SE Douglas Street, Suite 210 TTY Relay: 711 Snoqualmie, WA 98065-9266 March 2020 www.kingcounty.gov Simplified Drainage Review- Includes projects that propose between 2,000 square feet and These include . Ecology's ì í4 Stormwater Management Manual for Western Washington, replacing the previously adopted 2009 King County Surface Water Design Manual. Group Location: King Street Center. Today the Office of the Washington State Auditor released a pair of reports regarding King County Drainage District 5: a fraud investigation and a new type of report identifying the district as "unauditable." The Office also published an online guide to more than 35 other small local governments that have failed to file any public financial information for years, rendering them unauditable. The SWDM is also applicable in other municipalities that have adopted it. Additionally, all new development and redevelopment projects in the City of Snoqualmie must follow the stormwater standards from the 2016 City of Snoqualmie Addendum to the 2016 King County Surface Water Design Manual. 2016 Surface Water Design Manual 4/24/2016 : KING COUNTY, WASHINGTON, SURFACE WATER DESIGN MANUAL, APPENDIX C . The Island County Stormwater Design Manual is adopted pursuant to the Island County Stormwater and Surface Water Ordinance, ICC 11.03 and the Clearing and Grading Ordinance, ICC 11.02. This Addendum to the 2016 KCSWDM defines how the requirements of the KCSWDM are to be implemented within the City of Kenmore. For the period January 1, 2018 through December 31, 2019. Preservation of Natural Drainage Systems and Outfalls 50 4.2.5 Minimum Requirement #5: On-site Stormwater Management 50 . King County Drainage Maintenance Standards for Commercial and Multifamily Drainage Facilities Page A-9 General—Pollution: Presence of any pollutants (including paint, auto fluids, grease and food waste) or flammable materials. Snohomish County Drainage Manual Volume V Runoff Treatment BMPs January 2016 Contact the Waste Characterization Program at 206-296-4633 to determine how . 4.2.4 Minimum Requirement #4: Preservation of Natural Drainage Systems and Section 2.4.2 has been modified to include an additional . Department of Natural Resources and Parks . The 2021 Snohomish County Drainage Manual, as adopted on June 28, 2021. King County Code Chapter 9.04 and Chapter 9.12 as amended by Ordinance 18257, adopted on March 15, 2016. Summary of Recent Manual Changes - Changes from the 2016 Code to the 2021 Code. Volume II - Design Standards and Requirements i . The For projects in Simplified Drainage Review, required mitigation of runoff impacts can usually be achieved with measures that can be applied by a non-engineer. Mail Stop: KSC-NR-5600. This page is intentionally left blank. Kitsap County Departments of Public Works and Community Development have collaboratively embarked on a review and update process, with the assistance of a consulting firm. City of Bellevue. King County City of Seattle City of Bellevue . Group Detail Name: DNRP/WLRD - Stormwater Services Section (SWS) Description: This section of the Water and Land Resources Division is responsible for coordinating the County''s compliance with state and federal stormwater management regulations that protect water quality and for implementing a variety of stormwater management programs integral to this compliance as well as to the protection . A request for Council review should be emailed to the Snohomish County Council at contact.council@snoco.org or mailed to the Snohomish County Council at 3000 Rockefeller Ave M/S 609, Everett, WA 98201. Guidance for New Inspectors. What to Flush. . Snohomish County Drainage Manual Volume IV - Source Control BMPs ii 3.26 BMPs for Storage of Liquid Waste, Food Waste, or Dangerous Waste Containers...46 3.27 BMPs for Storage of Liquids in Permanent Above-Ground Tanks...48 3.28 BMPs for Storage or Transfer (Outside) of Solid Raw Materials, By- . The drainage infrastructure includes catch basins, drainage features, and a drainage network that shows where storm water flows. Only residential properties are eligible. The Storm Drainage Utility was created to address recurring local flooding within the City of Auburn. King County provides this list for your convenience but makes no recommendation whatsoever regarding these firms. Superceded by the drainage manual in . Addendum to the KCSWDM Page 1 . This page intentionally left blank. . King County GIS Center King Street Center 201 S. Jackson St. Suite 706 Seattle, WA 98104 giscenter@kingcounty.gov + 47.59909 N - 122.33136 W + 47° 35' 56.72" - 122° 19' 52.90" Special Drainage Requirements . Zip File. ----- storm drainage, grading, storm water management, floodplains, chesapeake bay preservation area, erosion and sediment control, and soil testing (geotechnical) 701.00 storm drainage systems - policy: 701.01 definitions: As-Built Record Drawing Submittal Requirements . SIMPLIFIED DRAINAGE . • Chapter 2 - Drainage Plan Submittal: The City of Sammamish has made minor changes to Chapter 2 of the 2016 KCSWDM. Drainage Manual . 2021. . P. "Drainage review" means an evaluation by King County staff of a proposed project's compliance with the drainage requirements in the Surface Water Design Manual. The 2021 City of Seattle Stormwater . Equipment and Materials. KING COUNTY, WASHINGTON 700 Central Building 810 Third Avenue Seattle, Washington 98104 Phone (206) 296-4660 Fax (206) 296-1654 REPORT AND DECISION ON APPLICATION FOR PRELIMINARY PLAT APPROVAL . 2016 2021 Surface Water Design Manual 47/241/20162021 CHAPTER 1 DRAINAGE REVIEW AND REQUIREMENTS KING COUNTY, WASHINGTON SURFACE WATER DESIGN MANUAL Section 83 1.1Section Drainage Review 1-11 Section 1.1.1 Projects Requiring Drainage Review 1-12 Section 1.1.2 Drainage Review Types and Requirements 1-13 Seattle, WA 98104-3855. The 2016 King County Surface Water Design Manual (KCSWDM). Maintenance Necessary to Bring to Standard: Remove contaminants so that none are present. Published August 17, 2020 Report No. The focus of the Utility is to effectively manage stormwater within the City through: Drainage system planning. In accordance with King County Code, Chapter 2.98, Rules of County Agencies, this public rule was adopted on January 9, 2009. SIMPLIFIED DRAINAGE REQUIREMENTS . Island County Stormwater Design Manual . A technical manual detailing requirements and standards for designing storm water management systems in King County, to mitigate the impacts of new development and redevelopment on the natural environment, downstream neighbors, and existing man-made drainage systems. The City has adopted, and requires development to adhere to, the 2016 King County Surface Water Design Manual, sometimes called the "Stormwater Manual," "Drainage Manual," or even just "The 2016 Manual." All of these names mean the same thing. This update includes terminology, code, and drainage review guidance, as well as revised water quality, flow control, temporary . APPENDIX C . KITSAP COUNTY. drainage review, and summarizes the nine Core and five Special . Conducting the inspection. Additionally the AutoCAD DWG drawings can be downloaded as a single file or chapters can be downloaded individually. DESIGN MANUAL. King County GIS Center King Street Center 201 S. Jackson St. Suite 706 Seattle, WA 98104 giscenter@kingcounty.gov + 47.59909 N - 122.33136 W + 47° 35' 56.72" Stormwater drainage facility maintenance checklist King County Pollution Prevention Manual-(KCSPPM) 2021 Edition City of SeaTac Addendum to King County Surface Water Design Manual-2017 . AASHTO Highway Drainage Guidelines (2007), AASHTO Drainage Manual Volumes 1 and 2 (2014), and FHWA HDS-2 Highway Hydrology (2002). The intent of the Manual is to: Establish criteria for review and analysis of developments and; Manage stormwater to minimize contact with contaminants and; Mitigate the impacts of increased runoff due to urbanization and; Manage runoff from developed property and property being developed. KITSAP COUNTY STORMWATER DESIGN MANUAL Effective Date: December 31, 2016 prepared for. . Franklin County Stormwater Drainage Manual ix Approved March 2012 Tables 2-1 Applications of the Recommended Hydrologic Methods 2-5 2-2 Constraints to Using Recommended Hydrologic Methods 2-5 2-3 Type II SCS Design Storm Hyetograph 2-7 2-4 Roughness Coefficients (Manning's "n") for Sheet Flow 2-10 . Inspection Process. A s such, Kitsap County is mandated to update it's Stormwater Design Manual and relevant development codes for consistency. Keep for historical reference (retained for vested permit processing). Arizona State University's four campuses are located in the Salt River Valley on ancestral territories of Indigenous peoples, including the Akimel O'odham (Pima) and Pee Posh (Maricopa) Indian Communities, whose care and keeping of these lands allows us to be here today. Side Sewers. were repealed 7 years ago. Ecology has deemed the 2016 KCSWDM and associated . 5 . 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