How stormwater rainwater becomes polluted, including details on specific pollutants and their sources. The web soil survey allows you to create custom reports by selecting a specific area of interest. Clark county stormwater management plan clark county. Stormwater management manual for eastern washington manual is to provide guidance in stormwater design and management for eastern washington. Aug 14, 2019 stormwater management manual for eastern wa ecology is pleased to announce that the updated 2019 stormwater management manual for eastern washington swmmew is now available online. In maryland, lid is the preferred stormwater management approach. At the state level, washingtons own manuals are just one example. Washington state department of ecology water quality program. Industrial stormwater permit washington state department. If you have questions about ordering the stormwater manual, please call the department of printing at 360 7536820.
Tigard, tualatin, and portions of washington county. This update was overseen by the source id subgroup of the stormwater work group swg which is part of the stormwater action monitoring sam collaborative. Stormwater pollutant removal by two wet ponds in bellevue. The city of spokane is required to have a stormwater management plan that addresses stormwater quality and quantity issues and to comply with the eastern washington phase ii municipal stormwater permit. The manual aims to provide a commonly accepted set of technical standards in addition to presenting new design information and new approaches to stormwater management. The ila was formed based upon previous studies indicating. We require most industrial sites in washington to monitor, measure.
Bellingham, clark county, douglas county, king county, kitsap county, olympia, pierce county, renton, skagit county, tukwila, and vancouver currently charge the. Construction stormwater application and forms manual. As a permit requirement, ecology requires that all phase ii permittee, including the city of gig harbor, adopt the 2005 stormwater management manual for western washington manual or an equivalent. Washington state department of ecology 1992 and in fact. Jun 26, 2017 stormwater management manual for eastern wa update webinar the washington state department of ecology ecology, working collaboratively with the eastern washington steering committee and stormwater professionals from the region, is updating the stormwater jun 23, 2017 forester daily news. It replaces similar provisions that previously existed in the county land division ordinance chapter 24 county code since 1978. Stormwater manual on july 7, 2005, yakima county and the cities of yakima, union gap and sunnyside formally entered into an interlocal governmental agreement ila for coverage under the eastern washington phase ii municipal stormwater permit. 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. The erosion control and stormwater management code ecsm became effective january 1, 1998 and requires new land development activities to meet stormwater management and erosion control requirements. Washington state department of ecology water quality program february 2005 publication no.
I of the stormwater management manual for western washington swmmww. Standards for bioretention design, including soil mix, plants, storage volume and feasibility criteria, are specified in appendix c of the king county surface water design manual. This 2020 icid manual update was developed by herrera environmental consultants and aspect consulting for king county using funding from western washington permittees. During the 20 permit, stormwater managers in eastern washington engaged in a process to. Agency updates stormwater manual for western washington. Our knowledge of the impacts of stormwater runoff and the methods for controlling it has improved.
This manual, the 2009 city of kenmore stormwater pollution prevention manual, is a modified version of that king county manual. At least two respondents should be from eastern washington. Eastern washington phase ii municipal stormwater permit. The king county backwater kcbw program is a standard step backwater analysis program for pipe networks, culverts, and simple open channels. Stormwater management manual for western washington volume ii construction stormwater pollution prevention prepared by. The washington state department of ecology recently published an updated version of its stormwater management manual for western washington. The washington state department of ecology is solely responsible for any. At the same time, ecology issued new phase ii municipal stormwater general permits for eastern and western washington impacting 100 cities, counties, and other entities and, for the first time, requiring them to regulate discharges from their stormwater systems. Hard copy and cdrom versions of the manual can be ordered from ecology. Eastern wa update webinar the washington state department of ecology ecology, working collaboratively with the eastern washington steering committee and stormwater professionals from the region, is updating the stormwater jun 23, 2017 forester daily news. Our stormwater manuals provide stormwater permit implementation and management guidance. The 2012 state department of ecology stormwater management manual for western washington can be accessed from ecologys stormwater information website.
Clackamas county water oregon includes banks, beaverton, rivergrove and gladstone and portions of washington county 1200c construction application and forms manual 1200c administered by deq deq administers the 1200c for all other sites those not eligible for the 1200cn and not in areas covered by agents. The washington state department of ecology ecology gratefully acknowledges the valuable time, comments, and expertise provided by the people listed below who contributed to the 2012 revision of vol. If multiple stormwater manuals are referenced, the swmp must. An accurate count of washington residents will ensure the fair distribution of political representation and of federal and state resources. Clark countys stormwater management plan describes how stormwater and related water quality issues are managed. Military chevron, 31980 military rd s, auburn, wa restaurant inspection findings and violations. On average, each of these singlefamily residential customers uses a similar amount of water over a day.
Gabriela sanchez is the victimwitness coordinator for the douglas county prosecuting attorney. Water system service capacity in equivalent residential units. Stormwater washington county, tennessee development services. S in social services, with a psychology minor, at central washington university in 2009. The protective design standards are found in the state stormwater manual, first adopted in 1992 and updated in 2005 for western and eastern washington. King county, washington, surface water design manual 2009 surface water design manual 19 2009 17 1. Customers from nonresidential and multifamily units apartments and condominiums can.
What stormwater is, where it comes from, and why it is important. The 2009 king county stormwater pollution prevention manual was developed by king county and adopted for use within unincorporated king county in january 2009. Washington state to update municipal stormwater permits. King county demonstrated that such changes will help protect water quality while. It was further agree that the mix of case studies should include the following characteristics. The chartering meeting established a tenperson steering committee with several. The island county stormwater design manual is adopted pursuant to the island county stormwater and surface water ordinance, icc 11. Stormwater faq sammamish community wildlife habitat. Clark county stormwater manual 2015 the stormwater manual is a comprehensive document to guide project applicants and developers through every step related to stormwater planning, design, construction, maintenance and operation.
Draft stormwater technical information report prepared for king county october 2016 prepared by. East lake sammamish master plan trail inglewood hill road. The manual is divided into four books for various users and took effect on january 8, 2016. Seattle, washington and king county, washington settlement. Ecology is working with eastern washington communities and other interested parties to complete a separate manual for eastern washington. The city of seattle has enacted stormwater regulations to protect people, property, and the environment from damage caused by stormwater runoff.
Inglewood hill road parking lot draft stormwater technical information report king county 14 october 11, 2016 5541521075 2105 the sammamish municipal code smc 21a. Pond a is an older pond that was upgraded, under the guidelines of the king county surface water design manual 1990, to improve its pollutantremoval. How to find the stormwater management manual on the internet the stormwater management manual for western washington is also available on ecologys stormwater homepage. Washington to reissue municipal stormwater permits. Stormwater manuals washington state department of ecology. In the table below, clicking on a survey area that is listed as current takes you to the web soil survey. Washington county, tennessee is designated as a municipal separate storm sewer system ms4 and through their npdes stormwater discharge permit with the state of tennessee is required to develop a stormwater management program.
Under the technical information heading, you will find a link to the manual. Those contaminants are carried into waterways and harm fish and other aquatic life. Does the selection create improve appropriate representation between eastern and western washington subjects. In cooperation with washington county and our 12 member cities, we build, maintain and enhance the public drainage system to meet public needs and to comply with strict water quality regulations set for the tualatin river drainage area by the oregon department of. Surface water design manual king county, washington. 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. Case studies the project team agreed to research and write eight case studies from a representative crosssection. Inglewood hill road parking lot draft stormwater technical information report. Mrsc best management practices bmps for storm and surface. The meeting was attended by more than 70 representatives of 17 cities, 11 counties and 5 federal and state agencies with interests in stormwater management in eastern washington. The industrial stormwater general permit isgp helps industrial facilities comply with federal regulations that reduce pollution. Phase i permits contain additional requirements for water quality monitoring and retrofits.
Draft 2009 surface water design manual and the stormwater pollution prevention manual. Gaston, hillsboro, king city, north plains, sherwood, tigard, tualatin, washington county. The stormwater management swm program improves water quality, protects fish habitat and manages drainage by operating and maintaining the stormwater conveyance system, establishing design and construction standards, regulating activities that can impact the watershed and enhancing streams and floodplains. 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.
Programs equivalent to the 2014 stormwater management manual for western washington. The citys stormwater codes also satisfy the citys obligation to comply with its municipal stormwater discharge national pollutant discharge elimination system npdes permit, issued by the washington state department of ecology. Stormwater management manual for western washington swmmww. Additionally, washington county, tennessee is designated as a qualified local program qlp. Stormwater code and manual clark county washington. Stormwater management manual for eastern washington. Review of stormwater management manual for western. Washington, dc april 16, 20 king county and the city of seattle have agreed to invest in a major upgrades of to local sewage and combined stormwater collection, piping and treatment under settlements with the department of justice and the u. Residential stormwater facilities whatcom county code chapter 20. Eastern washington phase ii municipal stormwater permit national pollutant discharge elimination system and state waste discharge general permit for discharges from small municipal separate storm sewers in eastern washington state of washington department of ecology olympia, washington 985047600 in compliance with the provisions of the state.
The puget sound action teams manual, published in 2005, is a comprehensive, technical guidance manual for the use of lid in the puget sound area pchb 2008. Washington state decision makes lid mandatory forester. The new version applies recent research, updates design criteria and procedures, corrects errors and clarifies statements from the previous release, according to an agency announcement. This dataset is intended to show the point locations of stormwater facilities for planning and maintenance purposes. The stormwater npdes permit sections s4 and s5 states. This section of the water and land resources division is responsible for coordinating the countys 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. Dnrpwlrd stormwater services section sws description. The link above will take you to the home page of aug 08, 2019 eyes over puget sound surface condition report july, 2019 now available. Stormwater pollutant removal by two wet ponds in bellevue, washington by karen j. The plan also describes the countys actions to meet requirements of an npdes phase i municipal stormwater permit issued in august 20 and updated in december 2014. Stormwater management manual for western washington. King county, washington, surface water design manual 2009 surface water design manual 192009 17 1. Water system service capacity in equivalent residential units erus public water systemsespecially small systemsmainly serve singlefamily residences. Archived stormwater documents king county, washington.
Stormwater can pick up pollution from factories and businesses. Water system service capacity in equivalent residential. This dataset shows the locations of stormwater facilities for the control of stormwater or water quality improvement. Stormwater management manual for eastern washington 2004, corrections to 2004 manual,update underway as of 2016. The following information is covered in the king county stormwater services science page. King county, washington this page contains links to outdated stormwater documents archived for future reference for cases where theyre referenced in municipal codes. To align these with the phase i permit requirements and the ecology stormwater manual, the western washington phase ii draft permit also proposes a requirement to apply these standards to sites.
Icid field screening and source tracing guidance manual. The city of gig harbor has not adopted the manual to date and is currently using a design manual developed by the city in. Current, official soil survey information is on the web soil survey. There is a requirement to infiltrate 75percent of onsite water generated.
1161 3 827 694 1006 766 983 1057 818 497 48 464 1236 229 27 407 1104 1251 1228 1136 596 742 15 982 309 989 642 36