For questions about the stormwater website, please contact blair scott, water quality planner, king county stormwater services section. Stormwater manual directors rule 172017dww200 august 2017 f1 f1. Rainwater collection, including the use of rain barrels, has become more popular as a supplemental source of water. The purpose is to develop and test the effectiveness of media campaign and social marketing tools. The proposed changes to the manual are seen as track changes edits. Appendix 10 equivalent programs for runoff controls for new. September 30, 2014 chapter 11 easements and rightsofway 111. In addition, several reference themes are included to assist sws in. Rainwater collection washington state department of ecology. This map provides information about king county stormwater facilities, studies, and drainage projects managed by the stormwater services section sws.
This map displays current ms4 data within king county and is updated regularly by both office and field data editors. Summary of major revisions to the 2009 stormwater pollution. The stormwater code and manual are in the process of being updated and are scheduled to be effective july of 2021. King, pierce and cowlitz county lodging businesses report using one of two tax rates. Stormwater manual 11 january 1, 2009 lexingtonfayette co. This document, king countys 2009 stormwater management program swmp describes the actions and programs implemented by king county agencies that protect stormwater in unincorporated king county and on king county facilities located in other jurisdictions. Aug 08, 2016 the manual provides detailed information for businesses, residents, managers, and owners of property in unincorporated king county, and describes the actions we are all required to take to reduce the contamination of stormwater, surface water, and groundwater, to comply with federal clean water act requirements.
The outfall would be conveyed back into the stream channel and leave the property. On august 1, 2012, the washington state department of ecology ecology released two final western washington municipal stormwater permits. Controlling runoff from development and construction sites. Appendix 10 equivalent programs for runoff controls for. On campus, stormwater falls on buildings, roads, parking lots, sidewalks, loading docks and landscaped areas. Ecology compiled data from the 200920 western washington stormwater npdes.
Three concepts, the public drainage system, the waters of fayette county, and postdevelopment floodplains are important to the management of. The urban center contains more than 500 acres for which stormwater is untreated or well below current standards. Fy 2012 municipal stormwater grants of regional or. America, europe, east asia, and australia because of. Equivalent stormwater manuals for municipal stormwater. Ms4,wlrd,kcgis center, king county antialiasingmode. Stormwater management activities include keeping rainwater clean, and using best management practices at sites or regional. The 2016 stormwater code and manual became effective on january 1, 2016. Introduction this appendix presents hydrologic modeling concepts to support the design of stormwater best management practices bmps that meet minimum requirements in the stormwater code and in volume 1 project minimum requirements. Principles for urban stormwater management to protect stream. Figure 1 also includes boundaries of corcoran and avenal, however, these areas do not contain populations that satisfy ua criteria. Join our email listserv to receive updates about this permit.
The king county backwater kcbw program is a standard step backwater analysis program for pipe networks, culverts, and simple open channels. Use the king county surface water design manual kcswdm for construction projects that require king county permits and have stormwater quantity and quality control requirements. It is designed to help the regulated community and regulatory agencies work through the recommendations provided in the 2004 connecticut stormwater quality manual. Expanding the benefits of seattles green stormwater. County s stormwater manuals ecology 2012, king county 2009 tables 1 and 2, but not all designs criteria could be incorporated for the retrofit. Feb 06, 2020 impacts of stormwater runoff from new development, redevelopment and construction activities. Stormwater management handbook implementing green infrastructure in northern kentucky communities may 2009 county fiscal court peter. If multiple stormwater manuals are referenced, the swmp must. Support the water resource sustainability goals established in the kitsap county 2009 water is as a resource not a waste stream policy kc resolution 109 2009 and. Direct impacts of construction costs in king county. Vegetated roof on east hills center, grand rapids, mi. Local sales and use tax washington department of revenue. The applicant has proposed using the 1998 king county surface water design manual, however the.
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. Post disaster recovery yes no no no res 43, 2272012 real estate disclosure no no yes yes wa state mandates certain disclosures by. This necessitates the provision of surface and storm water management. King county regional transit authority rta tax reporting change pdf pierce county regional transit authority rta tax reporting change pdf. Eastern washington stormwater group 5 mission statement complete a focused update of the manual via an open and collaborative process to include the latest advances in stormwatermanagement, needed clarifications, and improved ease of use. Annual industrial waste system stormwater monitoring report. Fy 2012 municipal stormwater grants of regional or statewide. The king county runoff time series kcrts hydrologic model is a required methodology under the 1998 king county surface water design manual for sizing detention and infiltration flow control facilities. The stormwater pollution prevention manual sppm presents pollution prevention practices for all property owners in unincorporated king county.
Stormwater management manual for eastern washington. County is required to prepare a storm water management program swmp for the geographic area encompassed by the uas within the county. The management of urban drainage is central to achieving this broader. 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 stormwater management manual for eastern washington manual provides guidance for the measures necessary to control the quantity and quality of stormwater.
King county is in the process of launching a new procurement system which will be live on oct 26. The boundaries of uas within kings county are shown on figure 1. See our updating stormwater regulations page for more information. Dnrpwlrd stormwater services section sws description.
The applicant would collect stormwater runoff and convey it into a proposed stormwater vault located in tract b. While there is considerably greater variation in runoff in eastern king county than. Surface water design manual 4 flow control 5 water quality 6 landslide hazards 7 drainage complaints 8 description. If youre trying to register as a new supplier this system, the old procurement system, no longer allows suppliers to register. 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. Stormwater is water from storm events, either rain or snowmelt, that flows over the ground and enters the nearest surface water body. Seth walker, walla walla county david haws, yakima county alex nguyen, wsdot dean smith, department of corrections jennifer lange, douglas county eastern washington stormwater group 8 2018 manual development phase 1 mayjune 2017 initial manual input kickoff meeting ecology kickoff meeting ecology and steering committee. Manual the 2009 stormwater pollution prevention manual sppm is being updated to better inform businesses and residents what they can do to protect stormwater, surface water, and groundwater quality in unincorporated king county. Stormwater manuals washington state department of ecology. We require most industrial sites in washington to monitor, measure, and reduce stormwater pollution leaving their site. Stormwater pollution prevention manual king county.
Mrsc best management practices bmps for storm and surface. Gsi can take many forms, from rain gardens to trees, and delivers multiple benefits to communities and cities. The city of gig harbor has not adopted the manual to date and is currently using a design manual developed by the city in. Stormwater runoff can flow directly into fresh or marine waters, or it may go into a storm drain system and continue through storm pipes until discharging into the environment. Please fill out all required fields before submitting your information. In 2009, we issued a rainwater use interpretive policy, which clarifies that you may use water collected from your rooftop without a water right permit. King county stormwater manual download king county stormwater manual read online louise kulzer king county surface wat. Stormwater management manual for western washington lid vol. Residential stormwater worksheet supporting document. The manual provides detailed information for businesses, residents, managers, and owners of property in unincorporated king county, and describes the actions we are all required to take to reduce the contamination of stormwater, surface water, and groundwater, to comply with federal clean water act requirements. 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. Appendix a additional site information king county, washington.
In some cases, municipal stormwater permittees have the option of either adopting portions of the appropriate stormwater manual or portions of a regional manual determined to be equivalent to the ecology manual. Stormwater monitoring washington state department of ecology. The chartering meeting established a tenperson steering committee with several. Together, we can use green stormwater infrastructure gsi to collect, slow, and treat rain once it hits the earth and becomes stormwater. The 2009 draft update of king county stormwater pollution prevention manual sppm click here or on the title above to download the draft sppm 2. Applicants may, at their discretion, choose to use the bmp performance standard consistent with table 4.
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. Industrial stormwater permit washington state department of. Stormwater pollution prevention manual king county, washington. Some of it soaks into the ground, but most of it flows to the nearest storm drain. Seattle public utilities spu knows the covid19 pandemic has made it harder for some of its customers to afford essential services. The purpose of this manual is to provide stormwater managers and site designers with a. Adoption of 2009 king county surface water design manual.
Stormwater staff from all jurisdictions in king county, as well as development professionals. Ontheground realities in king county 12000 rain gardens. Stormwater design manual a guide to the design and construction of stormwater facilities within the city of florence, or city of florence 250 hwy 101. The stormwater code is contained in title 12 of the kitsap county code kcc. These factors, combined with increasing redevelopment pressures, mean. Stormwater management design manual table of contents vi table of contents issue date. Low impact development lid is the cornerstone of stormwater management with the goal of mimicking a sites. Related lid technical guidance manual update available nov. This worksheet is to be used in conjunction with the connecticut stormwater quality manual for any new land development. Kitsap county department of community development 614 division street, ms36 port orchard, wa 983664682. This will reduce flooding, sewer overflows, and pollution entering our waterways.
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