Jul 05, 2016 adopt 2016 king county surface water design manual with addendum city currently follows 2009 kcsdm with kirkland addendum preferred by development community approved as equivalent to ecology manual as a package flexibility in lid implementation includes detailed guidance on nonpermit items such as conveyance. The king county groundwater protection program maintains a database of groundwater wells, water quality and water level sampling data. Modeling climate change impacts on extreme precipitation. The seattle building code sbc provides minimum requirements for design and construction of new buildings. Flow control 2009 surface water design manual 1 2015 7 direct discharge exemption any onsite natural drainage area is exempt from the flow control facility requirement if the area drains to one of the major receiving waters listed in table 1. The drainage manual is used in concert with snohomish county code and snohomish county engineering design and development standards edds volume i pdf minimum technical requirements volume ii pdf. Washington state department of ecology, stormwater management manual for western washington, 2005. Direct discharge exemption king county, washington. B at right, and meets the following criteria for direct discharge26 to that receiving water.
City of issaquah 2017 stormwater design manual addendum 2 p a g e new technical manual. Stormwater manuals washington state department of ecology. Appendix 10 equivalent programs for runoff controls for. The 2005 stormwater manual has been superseded by the 2009 drainage manual. Home scifyi modeling climate change impacts on extreme precipitation, stormwater design requirements, and wastewater conveyance. Draft 2009 surface water design manual and the stormwater pollution prevention manual. Surface water management fee data king county, washington. The city adopts the stormwater design manual, based on ecologys i i4 stormwater management manual for western washington, replacing the previously adopted 2009 king county surface water design manual. Flow control 2009 surface water design manual 12015 7 direct discharge exemption any onsite natural drainage area is exempt from the flow control facility requirement if the area drains to one of the major receiving waters listed in table 1.
I nvestigates surface water problems where engineering support is needed contact island county public works address. An accurate count of washington residents will ensure the fair distribution of political representation and of federal and state resources. King county, washington surface water design manual page 1 of 23 introduction this addendum to the 2016 king county, washington surface water design manual kcswdm applies to development and redevelopment proposals within the city of federal way. Full manual standard specifications for road and bridge construction complete manual 1012018 division. 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. Drainage design and erosion control manual for olympia. Addendum to the king county surface water design manual.
It has been developed for state facilities and may not be appropriate for all county roads or city streets that are not state highways. Hydrologichydraulic software programs and data king county. Cfw addendum to the kcswdm page 1 of 29 2162010 addendum to the king county surface water design manual effective date february 16, 2010. Washington state retail food code chapter 246215 washington administrative code wac effective may 1, 20 doh 332033 may 20 for people with disabilities, this document is available on request in other formats. King county, washington, surface water design manual 2009 surface water design manual 192009 17 1.
Environmental objectives surface waters regulations 2009, as amended by the european union environmental objectives surface waters amendment regulations 2015, including the data and methodology used to derive the environmental quality standard, and the categories of surface water to which it applies. Title 9 surface water management king county, washington. This addendum to the 2009 king county surface water design manual kcswdm applies to development and redevelopment proposals within the city of seatac city. Users may search the database using quick or advanced search or use king county groundwater imap map set. The design manual provides policies, procedures, and methods for developing and documenting the design of improvements to the transportation network in washington. The county seat is seattle, also the states most populous city king county is one of three washington counties that are included in the. Publications manual on uniform traffic control devices. Meet king county surface water design manual standards and requirements, regardless of jurisdiction location. The city of sammamish has adopted the 2009 king county surface water design manual 2009 kcswdm in order to be in compliance with its phase ii municipal stormwater permit. The population was 2,252,782 in the 2019 census estimate, making it the most populous county in washington, and the thmost populous in the united states. When the king county manual does not provide guidance, applicants shall refer to the lid technical guidance manual for puget sound current edition. 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. Pursuant to king county council adoption of ordinance 18257, the department of natural resources and parks adopted a public rule revising the king county surface water design manual swdm.
The kent manual adopts the 2016 king county surface water design manual kcswdm and applies to development proposals within the city of kent. King county and the city of seattle have coordinated free emergency child. The kcrts model is a required methodology under the 1998, 2005 and 2009 king county surface water design manual for sizing detention and infiltration flow control facilities. Proposed lid stormwater management facilities shall be designed and constructed in accordance with the latest adopted version of the king county surface water design manual. Surface water general requirements 41 revised 12015 section 4 surface water management design and construction requirements page 41 introduction 43 41. King county surface water management division in seattle. Modeling climate change impacts on extreme precipitation, stormwater design requirements, and wastewater conveyance by kc wlr on october 19, 2017. Training on king county surface water design manual. Items with an asterisk are incorporated by reference but not included in this document. For such doors, the design wind pressure values can vary by 30% or more, resulting in doors with a great difference in materials needed. It has been updated twice since first published in 1998. King county, washington, surface water design manual 2009 surface water design manual appendix d 192009 d3 d. King county, washington, surface water design manual 2009 surface water design manual 19 2009 17 1. City equivalents for county agencies unless the context requires otherwise, any reference to county, king county, or county.
City of kenmore surface water design manual addendum to 2016 kcswdm december 12, 2016 page 3 chapter 3 hydrologic analysis and design. The snoqualmie addendum lists various amendments to the 2009 king county surface water design manual regarding water quality. Perforated stub out connections purpose and description a perforated stubout connection is a length of perforated pipe within a gravelfilled trench that is placed between roof downspouts and a stubout to the local drainage system. Surface water design manual addendum preface how to use this. City of kenmore surface water design manual addendum to 2016 kcswdm december 12, 2016 page 5 king county map or designation city of kenmore map flow control applications map the king county flow control applications map included with the kcswdm shall not be applied in the city of kenmore. If a project is located in a jurisdiction where the surface water design manual standards and requirements are different than king county s, the project shall implement the more stringent requirement. Also, the new pervious surface assumed on each created lot shall be the entire lot area, except the assumed impervious portion and any portion in which native conditions are preserved by a clearing limit per kcc. This addendum includes minor revisions to the kcswdm to address the differences between king countys and the citys organization and processes. Find 7 listings related to king county surface water management division in seattle on. Performance of rapid rate filtration plants in washington. Amended infrastructure design and construction standards. The kcswdm has been adopted to meet the requirements of the clean water act, the endangered species act and state growth management act.
These bmps reduce peak flows and provide some infiltration and water quality benefits. Buriens surface water features lakes, wetlands, streams, and puget sound are a significant part of our natural beauty and rich heritage. Wsu energy program building efficiency energy code. Surface water design manual this addendum to the 2016 king county surface water design manual kcswdm applies to development and redevelopment proposals within the city of kirkland. The 2016 edition of the surface water design manual does not employ kcrts for hydrologic modeling. Example of permanent surface water control pond sign.
The 2009 king county surface water design manual kcswdm and city of renton amendments to the 2009 kcswdm is only applicable to projects vested with a complete application prior to january 1, 2017. Older versions of the surface water design manual swdm 2005 swdm. The city of kenmore has made no changes to chapter 3 of the 2016 kcswdm. This code does not cover regulations for singlefamily houses, duplexes, and townhouses with up to three stories and separate entrances. To adopt the 2016 edition of the surface water design manual, which is an update to the 2009 surface water design manual to. Surface water design manual means the 2009 king county surface water design manual and supporting documents as appropriate, prepared by king county department of natural resources and parks or its successor organization, as supplemented and modified by the city of issaquah 2011 addendum to the. City of tukwila 2015 stormwater management program plan city of tukwila 2014. Our stormwater manuals provide stormwater permit implementation and management. A complete building application must be submitted prior to january 1, 2017 to vest to the 2009 king county surface water design manual. Acknowledgments this is the fourth edition of the water system.
Title 18 energy management king county, washington. Clark county stormwater manual 2015 27 book 2 bmp design bmp t5. Pierce county must update the 2015 manual by july 1, 2021. Current manual january 2016, november 2017 for volume i the documents listed below compose the entire snohomish county drainage manual. Pursuant to king county council adoption of ordinance 16264, the department. Notice on vesting under the 2009 king county surface water design manual pdf123kb low impact development lid guidance wa dept. King county appendices not adopted by city of renton are indicated with does not apply in the following list. The city of sammamish has adopted the 2009 king county surface water design manual 2009 kcswdm in order to be in compliance with its phase ii municipal. This manual, the 2009 city of kenmore stormwater pollution prevention manual, is a.
To summarize, the flow control facility requirement is waived to summarize, the flow control facility requirement is waived for any threshold discharge area in which there is no more than a 0. Maintenance of all drainage facilities in compliance with king county maintenance standards is the responsibility of the applicant or property owner as described in the surface water design manual, except those facilities for which king county assumes maintenance and operation as described in k. Downspout dispersion purpose and description downspout dispersion systems are splash blocks or gravelfilled trenches, which serve to spread roof runoff over vegetated pervious areas. The 2009 king county stormwater pollution prevention manual was developed by king county and adopted for use within unincorporated king county in january 2009. Seattle has adopted the 2015 international building code, with amendments specific to our city. This page contains the software programs referenced in the surface water design manual, as well as other supporting files related to stormwater analysis and facility design. Pursuant to king county council adoption of ordinances 15051, 15052, 15053 otherwise known as the critical areas ordinance, stormwater ordinance, and clearing and grading ordinance, the department of natural resources and parks adopted public rules for revising the king county surface water design manual swdm and the stormwater pollution. Harkeerat kang gis analyst 201 s jackson st, suite 700 seattle, wa 98104 2062633734 voice firstname. The fish passage barrier and surface water diversion screening and prioritization manual is a work in progress.
City of sammamish surface water design manual addendum to 2016 kcswdm page 4 reference section 1, 4a, 4c, 4d, 5, 6, 7a and 8a through 8e, 8i, 11 apply to proposals in the city of sammamish. Water system design manual doh pub 331123 revised october 2019. This page contains links to outdated stormwater documents archived for future reference for cases where theyre referenced in municipal codes. April 2, 2020 as part of governor inslees proclamation to delay the implementation of the washington state building code, the implementation date for the washington state energy coderesidential has been delayed from july 1, 2020, to november 1, 2020. Environmental objectives surface waters regulations 2009. The kcswdm has been adopted to meet the requirements of the clean water act, the. Notice on vesting under the 2009 king county surface water. Center for watershed protection, ellicott city, maryland. The king county version of chapter 3 applies to proposals. Appendix a maintenance requirements for flow control, conveyance, and wq facilities. City of olympia stormwater manual january 2005 the 2005.
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