Water quality ordinance in 1998, clark county added a code chapter prohibiting the discharge of pollutants to storm drains, surface water and ground water. January 2016 clark county adopted its stormwater management manual 2015 containing standards equivalent to the 2012 swmmww which included mandatory lid. Draft 2009 surface water design manual and the stormwater pollution prevention manual. The county seat is seattle, also the states most populous city king county is one of three washington counties that are included in the seattletacomabellevue. Current manual january 2016, november 2017 for volume i the documents listed below compose the entire snohomish county drainage manual. Wsu energy program building efficiency energy code. Kansas surface water quality standards table of numeric criteria page 5 of 24 table 1a. 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. The kansas surface water register, 281628g, was last published in the kansas register on june 19, 2014 and.
The county seat is seattle, also the states most populous city. Direct and indirect effects on water resources, both surface and ground water, which could affect their chemical and ecological status as. Older versions of the surface water design manual swdm 2005 swdm. The drainage manual is used in concert with snohomish county code and snohomish county engineering design and development standards edds. Stormwater management manual for western washington. Harkeerat kang gis analyst 201 s jackson st, suite 700 seattle, wa 98104 2062633734 voice firstname. The amendment revises chapters 1 and 2 in their entirety and identifies changes to the remainder of the king county manual to reflect city of renton specific requirements. Washington state department of ecology water quality program february 2005 publication no.
The design manual provides policies, procedures, and methods for developing and documenting the design of improvements to the transportation network in washington. City of sammamish surface water design manual addendum city of sammamish surface water design manual addendum page 6 of 35 king county code kcc description sammamish municipal code smc description title 2 administration 20 administrative procedures, environmental policy 21a. Appendix 10 equivalent programs for runoff controls for new. Updates, errata, and clarifications are posted at king county s surface water design manual web site. Cfw addendum to the kcswdm page 1 of 29 2162010 addendum to the king county surface water design manual effective date february 16, 2010. The user has the option of downloading individual pages for each chapterappendix separately or all the changes for each chapterappendix with one download for each chapterappendix. Department of ecology stormwater management manual for western washington 2015 international residential code irc 2015 international building code ibc. An accurate count of washington residents will ensure the fair distribution of political representation and of federal and state resources.
King county is one of three washington counties that are. This dataset shows the locations of stormwater facilities for the control of stormwater or water quality improvement. The water quality design storm volume is the amount of runoff predicted from the 6month, 24hour storm. Center for watershed protection, ellicott city, maryland. The county of santa barbara obtained a grant, funded by proposition 84 and administered through the state water resources control board, to facilitate implementation of the pcrs. Pierce county surface water management improvement program 2014 2019. Sanitary sewer ronald waste water 17505 linden ave n shoreline, wa 983 206 5462494 water service shoreline water dept 1519 ne 177 th st shoreline, wa 98155 206 3628100 seattle public utilities 700 5 th ave. Dan sinkovich utility operations specialist 206 8012454 melissa ivancevich surface water quality specialist 206 8012453 chris berrington surface water engineering technician 206 8012456. King county, washington, surface water design manual 2009 surface water design manual appendix d 192009 d3 d.
Surface water management fee data king county, washington. Example of permanent surface water control pond sign. The figures in chapter 3 are reproduced, with permission, from king countys surface water design manual. Figures in chapter 7 through 12 are reproduced, with permission, from king countys surface water design manual, except where otherwise noted. Onsite wastewater treatment and disposal systems, 1980. References 1, 2, 3, and 4 12122016 2017 city of renton surface water design manual. Volume 3 project stormwater control table of contents stormwater manual directors rule 172017, dww200 august 2017 i table of contents.
Surface water design manual addendum preface how to use this. 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. The kcswdm has been adopted to meet the requirements of the clean water act, the endangered species act and state growth management act. City of tacoma stormwater management manual updates. Home scifyi modeling climate change impacts on extreme precipitation, stormwater design requirements, and wastewater conveyance. This addendum to the 2009 king county surface water design manual kcswdm applies to development and redevelopment proposals within the city of seatac city. Oct 19, 2017 in accordance with requirements by the washington state department of ecology, king county requires developers to use a manual to size and design stormwater flow control and water quality treatment. 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. Report number epa625r00008, environmental protection agency epa, national risk management. This addendum includes minor revisions to the kcswdm to address the differences between king countys and the citys organization and processes. The design relies on the past 68 years of rainfall data for ensuring proper sizing. Developed in response to local community concerns and questions developers, engineers, city staff. Stormwater technical guide vii february 2015 acronyms apn assessors parcel number bmp best management practice ccrs covenants, conditions, and restrictions cdp censusdesignated place dma drainage management area see chapter 4 eisa equivalent impervious surface area, as defined in the pcrs hoa home owners association hsg hydrologic soils group a, b, c, or d, as defined by nrcs.
It has been developed for state facilities and may not be appropriate for all county roads or city streets that are not state highways. 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. This page contains links to outdated stormwater documents archived for future reference for cases where theyre referenced in municipal codes. King countys 2015 strategic climate action plan calls for assessments of. Addendum to the kcswdm page 2 of 20 912011 this page is intentionally left blank. The 2005 stormwater manual has been superseded by the 2009 drainage manual. Two surface water nitrate vulnerable zones nvz uk, 2015 12 surface water abstractions and 7 ground water abstractions within the study area environment agency, 2015.
Whipple creek watershedscale stormwater plan report. 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. Pierce county surface water management improvement. This project is led by king county with the intent to. 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. Pierce county must update the 2015 manual by july 1, 2021. Stormwater manuals washington state department of ecology. 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. Summary of major changes between the 1998 and 2009 king. January 2005 volume iii hydrologic analysis and flow control bmps 11. It made low impact development principles and best management practices the preferred and commonly used approach for development.
Find 7 listings related to king county surface water management division in seattle on. Report number epa625180012, environment protection agency epa, office of water program operations, washington dc. Our stormwater manuals provide stormwater permit implementation and management. Aquatic life, agriculture, and public health designated uses numeric. Modeling climate change impacts on extreme precipitation. Updates are required by the washington state department of ecology, typically on a fiveyear cycle. Water quality ordinance in 1998, clark county added a code chapter prohibiting the discharge of pollutants to. Addendum to the king county surface water design manual. Modeling climate change impacts on extreme precipitation, stormwater design requirements, and wastewater conveyance by kc wlr on october 19, 2017. City equivalents for county agencies unless the context requires otherwise, any reference to county, king county, or county. 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 surface water management division in seattle. To submit a request, please call 1800 5250127 tddtty call 711. 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. The population was 2,233,163 in the 2018 census estimate, making it the most populous county in washington, and the 12thmost populous in the united states. King county, washington, surface water design manual, appendix a appendix a maintenance requirements for flow control, conveyance, and water quality facilities this appendix contains the maintenance requirements for the following typicalstormwater control and water quality facilities and components ctrl click to follow the link. Included in the adoption of the king county manual is this city of renton amendments to the 2009 king county surface water design manual. 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 construction stormwater pollution. Hydrologichydraulic software programs and data king county. King county surface water management division in seattle, wa. The 2005 stormwater manual has been superseded by the.
For the purpose of designing flow control bmps, a calibrated continuous simulation hydrologic model, based on the epas hspf, must be used. City of olympia stormwater manual january 2005 the 2005. Kansas surface water quality standards unofficial copy. Drainage manual snohomish county, wa official website. Appendix 10 equivalent programs for runoff controls for. Kansas surface water quality standards tables of numeric criteria prepared by the kansas department of health and environment bureau of water january 21, 2015. Training on king county surface water design manual. Stormwater management manual for western washington volume ii construction stormwater pollution prevention prepared by. If there are instances in which the worksheet differs from the design criteria in the text of this chapter, the. The circumstances under which different methodologies apply are summarized below.
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