including revisions, achieving equivalency with the Department of Ecology's 2014 Stormwater Management Manual for Western Washington. given as BMPT7.30 in Ecology's 2014 Stormwater Management Manual for Western Washington (SMMWW, Ecology 2012). 2013-2018 NPDES Phase II Permit; 2015 WSDOT Specifications; 2014 WSDOT Highway Runoff Manual; 2012 LID Manual; 2012 Stormwater Management Manual for Western Washington other larger western Washington jurisdictions in August 2012 with an effective date of August 1, 2013. Beginning January 1st, 2018 this package will be required for single-family homes that create and/or . Stormwater Manual. Management Manual for Western Washington, as amended in December 2014, as the Stormwater Management Manual for the entirety of unincorporated Skagit County. The July 2021 Stormwater Management Manual is applicable to the following projects: All complete applications submitted one or after July 1, 2021. Adopted Stormwater Manual for Design The City of Mill Creek uses the 2014 Revision of the 2012 Department of Ecology Stormwater Management Manual for Western Washington. Ecology Stormwater Management Manual fo r Western Washington (SWMMWW) Volume 1, Chapter 2. The training will highlight the most significant changes . Low Impact Development- Review, revise and make effective, local development-related codes, rules, standards, or other enforceable documents to incorporate and require Low Impact Development (LID) principles and LID best mangement practices (BMPs). On May 1st, 2009, the City of Shoreline implemented new surface water code that requires Low Impact Development (LID) for projects that disturb soils or add, replace, or create impervious surfaces. Preparation of Stormwater Site Plans 2. NOTES Ecology's Stormwater Management Manual for Western Washington (SWMMWW) Ecology's Stormwater Management Manual for Eastern Washington (SWMMEW) Order a hard copy or CD Detect and eliminate illicit discharges. M 3109.01 . A s such, Kitsap County is mandated to update it's Stormwater Design Manual and relevant development codes for consistency. The training will provide an overview of the 2017 standards -- revised since the city adopted a 2014 amendment to the state Department of Ecology Stormwater Management Manual for Western Washington. 2022 DRAFT Surface Water Management Program Control Manual . STORMWATER SITE PLAN _____ Terraforma Design Group, Inc. SUMMARY OF MINUMUM REQUIREMENTS 10 Minimum Technical Requirements as provided within Vol. New and re-development projects must follow new design requirements which are now often triggered with just a Single Family Residence project. Other design criteria requirements are an overflow structure, adequate separation from ground water and that an im ported bioretention soil mix be 18" in depth to provide enhanced treatment of runoff. All new development and redevelopment must follow stormwater standards from the 2017 City of Issaquah Addendum to the Washington State Department of Ecology's most recent Stormwater Management Manual for Western Washington. Instructions: Complete the information on this page and attach the provided cover sheet from page 2 of this document to the front. June 13, 2022, 9 a.m., Online webinar. Please fill out all required fields before submitting your information. Ecology issued the modified Permit and 2014 Manual in late December 2014. 2012 stormwater management manual for western Washington as amended in December 2014 (Vol. Engineering and Regional Operations . To determine which manual you need, contact your municipality or permit administrator. 39. We are preparing for the (2024) reissuance of the Municipal Stormwater Permits and updates to the Stormwater Management Manuals (SWMM). The Directors of SPU and SDCI share responsibility for issuance of notices of violation, stop work orders, and corrective actions for violation of the Stormwater Code. See the Stormwater Management Manual (2014) Volume 1 for complete descriptions of these requirements. Erosion is a natural process that can be accelerated by human activity. The Directors of SPU and SDCI share responsibility for issuance of notices of violation, stop work orders, and corrective actions for violation of the Stormwater Code. Source Control of Pollution 4. Update. Electronic copies are available at no cost. Instructions: Complete the information on this page and attach the provided cover sheet from page 2 of this document to the front. stormwater management manuals, one for Eastern Washington and one for Western Washington. Concurrent updates to the Stormwater Management . Our stormwater manuals provide stormwater permit implementation and management guidance. Other criteria or exemptions may apply. 3. 5.6 "Surface Water Design Manual" means the manual, and supporting documentation referenced or incorporated in the manual, describing surface water and stormwater design and analysis requirements, procedures and guidance. MR #2 CONSTRUCTION OF STORMWATER POLLUTION PREVENTION Refer to 2017 City of Issaquah Stormwater Design Manual Addendum and the 2014 Stormwater Management Manual for Western Washington for more information. Information in these pages provide guidance on stormwater management requirements for projects within the . This version is a revision of the 2014 SWMMWW. The "Surface Water Design Manual" is formally adopted by rule under the procedures in K.C.C. are deemed equivalent to Ecology's stormwater management manuals. Low Impact Development- Review, revise and make effective, local development-related codes, rules, standards, or other enforceable documents to incorporate and require Low Impact Development (LID) principles and LID best mangement practices (BMPs). Stormwater Resources / Volunteering. The major intersection between these stormwater manuals and WAC 246-272A stems from language in the stormwater manuals relating to STRES necessary to manage stormwater on single-family residential (SFR) building lots. Washington State Department of Ecology Stormwater Management Manual for Western Washington (2014) Low Impact Development Technical Guidance Manual for Puget . **Even if a construction permit has been approved and issued. The description below . Snohomish County Drainage Manual Volume II - Construction Stormwater Pollution Prevention 3 Sheet Erosion: The removal of a layer of exposed soil by the action of raindrop splash and runoff, as water moves in broad sheets over the land and is not confined in small depressions. Adopted Stormwater Manual for Design The City of Mill Creek uses the 2014 Revision of the 2012 Department of Ecology Stormwater Management Manual for Western Washington. All six Phase I permittees (Snohomish, King, Pierce, and Clark counties, and the cities of Seattle and Tacoma) submitted draft codes and manuals to Ecology for review. Stormwater Management Manual for Western Washington (2014 Update) The City of Lake Stevens uses the 2014 updated version of the 2012 Stormwater Management Manual for Western Washington. See the Stormwater Management Manual (2014) Volume 1 for complete descriptions of these requirements. What is Low Impact Development? August 1, 2013, and also issued a new 2012 Ecology Stormwater Management Manual for Western Washington (2012 Ecology Manual, revised in 2014), which contains Stormwater requirements for new development, redevelopment, and construction sites. Authors: Ben Alexander, Sound Native Plants & Erica Guttman, WSU Extension. For assistance with any of these compliance issues or recommendations regarding BMPs, please see the 2014 Stormwater Management Manual for Western Washington (SWMMWW), Volume II, Construction Stormwater Pollution Prevention which includes BMPs for Source Control and Runoff Conveyance and Treatment BMPs. Ecology 2014 revision to the Stormwater Management Manual for Western Washington. Added a new section D1-02 "Site Planning and Analyses . In fall of 2017, Ecology extending the existing permit from expiration in 2018 to August of 2019. This fact sheet is intended to be used for informational purposes only. Western Washington 2012/2014 Stormwater Management Manual for Western Washington (2014 version includes maintenance tables for bioretention and permeable pavement) 2016, achieving equivalency with the Department of Ecology's 2012 Stormwater Management Manual for Western Washington, as revised in 2014. The objective of this manual is to provide guidance on the measures necessary to control the quantity and quality of stormwater produced by new development and redevelopment, such that they comply with water quality standards and contribute to the protection of receiving waters. The full SWMMWW Disclaimer . Stormwater Maintenance Agreement. Resource List - Advanced Longterm LID Operations: Bioretention Western Washington 2012 (Amended 2014) Stormwater Management Manual for Western Washington Click the image to the left to go to document's homepage on the Department of Ecology's website. 2013 - 2018 (2014 modification) Western Washington Phase II and Phase I Permit references to the 2014 Stormwater Management Manual for Western Washington S5.C.5.d N/A Clean catch basins if the inspection indicates cleaning is needed to comply with maintenance standards established in the SWMMWW. Our new stormwater manual will provide users a one-stop shop for all necessary regulatory information, along with design and maintenance standards and information tailored . Development Division, Design Office . Other criteria or exemptions may apply. The modified Permit is effective January 16, 2015. City Stormwater Regulations. Our staff evaluated the submittals for equivalency with the 2019 Stormwater Management Manual for Western Washington, and worked through revisions with permittees. It outlines how to control the quantity and quality of stormwater pollution that typically increases as new development replaces natural . Department of Ecology's 2012 Stormwater Management Manual for Western Washington (SWMMWW), as amended in 2014, and requires actions that are as or more protective than the provisions detailed in the SWMMWW. Here we provide information for municipal stormwater permittees and other interested parties about equivalent stormwater manuals for the Phase I Municipal Stormwater Permit and both the Eastern and Western Washington Phase II municipal stormwater permits. **. Note that these field tests generally provide a saturated hydraulic conductivity combined with a hydraulic gradient (see Darcy's Law, Equation 4D-8). . Sources: Stormwater Management Manual for Western Washington; Yakima Regional Low Impact Development Stormwater Design Manual; 2012 Low Impact Development Technical Guidance Manual for Puget Sound; Center for Neighborhood Technology; SEEC LLC. This virtual listening session will focus on the: Reissuance of the Phase I, Western WA Municipal Stormwater Permit. A. Stormwater Management Manual Adopted: The Department of Ecology 2012 "Stormwater Management Manual for Western Washington" as amended in 2014, together with the 2019 City of Orting Stormwater Management Manual Amendment, are is hereby adopted by reference, as though fully set forth herein, as the Stormwater Management Manual for the City of . 2012 (amended 2014) stormwater management manual for western washington www.ecy.wa.gov/programs/wq/stormwater/manual.html western washington low impact development (lid) operations and maintenance (o&m) guidance document, lid o&m training videos, and example inspection forms for bioretention and permeable pavement 2014: Washington : King County, Washington Surface Design Manual: King County Department ofNatural Resources : 2014: Washington: Stormwater Management Manual for Western Washington: Washington State Department of Ecology Water Quality Program: 2012: West Virginia: Stormwater Management Structure Guidance : August 1, 2017 Municipal Operations and Maintenance Inspect all municipal catch basins at least once by August 1, 2017, and every two years thereafter. Division 2, Engineering Design and Construction Standards consist of Earthwork, and Temporary Erosion and Sediment Control. The bulk family residential construction, see Minimum Requirement #2: Construction Stormwater Pollution Prevention (SWPP) in the 2014 Stormwater Management Manual for Western Washington. Acknowledged in Section D1-01 "General" that the city has adopted the 2014 state stormwater manual. Management Manual for Western Washington, as amended in December 2014, as the Stormwater Management Manual for the entirety of unincorporated Skagit County. The SWMMWW specifies that nine minimum requirements shall be met for new development projects per Figure I-2.4.1. Stormwater Management Manual for Western Washington (SWMMWW) provides additional guidance Efforts have been underway to further develop these "low impact development" concepts in Western Washington. Earthwork standard requirements are in the PDF file under "Content". Stormwater Management Manual for Western Washington as amended in 2014 (2014 SWMMWW) and the City of Redmond 2019 Stormwater Management Technical Notebook (STN). In the guidance you will find minimal maintenance schedules, inspection, documentation and contact information.