Water quality program january 2008 wsdot permit focus sheet series permit overview stormwater management program stormwater monitoring highway runoff manual faq stormwater monitoring helps us. An interagency agreement between wsdot and ecology regarding the statewide application of the 2008 hrm. Lynnwood link extension draft eis appendices jk part 1. The washington state department of transportation highway runoff manual, as determined by the washington state department of ecology to be equivalent to the 2014 department of ecology stormwater management manual for western washington, may be used when required by state or federal funding requirements. Some subsurface exploration may be required at this stage, depending on the adequacy of the geotechnical data available to assess feasibility. To view or download an electronic copy of these drafts visit. Washington state water quality standards washington state department of ecology ecology stormwater management manual for western washington ecology, 2005 wsdot highway runoff manual wsdot, 2008 washington department of fish and wildlife wdfw hydraulic project approval hpa requirements. Highway runoff manual hrm was developed to direct the planning and design of stormwater management facilities for existing and new washington state highways, rest areas. Referencing the hydraulics or highway runoff manual m 31.
The highway runoff manual hrm provides guidance to direct the planning and design of stormwater management facilities for existing and. Wsdots highway runoff manual m 3116 contains approved methods. The department of ecology reissued the permit, on april 5, 2019. The compost used for the 3inch compost blanket will conform to wsdot standard specification 914. Citeseerx document details isaac councill, lee giles, pradeep teregowda. Project interview with mark maurer, pla, pe, highway runoff program manager. Wac 1732700301 states that wsdot shall use the highway runoff manual to direct stormwater management for its existing and new facilities and rights of way in the puget sound basin. The hrm training workshop is a certification course that is for wsdot, local agencies, and consultants who do stormwater work on wsdot right of way.
Wsdot media filter drain from june 2008 edition of the wsdot highway. The puget sound runoff program requires wsdot to comply with regulations in the highway runoff manual. Manual, 9th edition mel, 2008, and the epas published guidelines for the contract. Design officeamericans with disabilities act ada information materials can be provided in alternative formats. Environmental management and strategy projects clearway. The wsdot manual is designed for and approved for use only for wsdot projects and by local governments for public road projects. Wsdot permit focus sheet series permit overview stormwater management program stormwater monitoring highway runoff manual faq polluted stormwater is the states largest source of urban water pollution. Stormwater manuals washington state department of ecology. Untreated stormwater is unsafe for people, fish, and wildlife. The project is designed using the 2008 standard specifications from washington state department of transportation wsdot, the 2008 wsdot highway runoff manual, and will be operated and maintained by the seattle department of transportation upon completion.
Wsdot media filter drain from june 2008 edition of the wsdot highway runoff manual 6b1. Environmental and engineering programs design officeamericans with disabilities act ada information materials can be provided in alternative formats. Refer to the foreword section of the hdm for more information. The wsdot stormwater management program swmp plan an appendix to the permit, and the highway runoff manual hrman appendix to the permit. Hrm program manager wsdot po box 47329 olympia, wa 985047329 2019 highway runoff manual the highway runoff manual hrm is an integral part of the wsdot npdes municipal stormwater permit permit. In eastern washington, the water quality design volume is the volume of runoff predicted from a 24hour storm with a 6month return frequency see highway runoff manual table 34. Glorilyn maw principal, hydraulic engineer mp stormwater. Contractors shall install the compostamended biofiltration swale as per rt. Guidance manual for puget sound, the wsdot highway runoff manual, and the wsdot hydraulics manual.
In early 2008, wsdot, epa, and fhwa issued new guidance on. The 7th edition highway design manual hdm establishes uniform policies and procedures to carry out the state highway design functions of the california department of transportation. Eastern washington erosion prevention and sediment control. Provide data that can be used to inform wsdots highway runoff manual hrm. This manual may be used for the design of public road projects. The following manual s have been approved for use by the city engineer. Water resources discipline report washington state digital.
Mention of trade names or commercial products, if any, does not constitute endorsement. Stormwater treatment wetlands are shallow manmade wetlands that are. Biofiltration swale of the wsdot 2011 highway runoff manual hrm with the addition of a 3inch compost blanket. Washington state department of transportation wsdot. Seed with grass and compost amended mulch or soil to develop vegetation and. Documentation a copy of the executive summary of the project drainage design report that includes, at minimum, the following. Sampling and testing of stormwater runoff from north carolina highway. Environmental and engineering programs design office, washington state department of transportation.
Problem the washington state department of transportation wsdot stormwater monitoring program, in operation for about 8 years, has never been subject to an external, objective assessment. Determine if site conditions are appropriate for dispersion andor infiltration as figure 41 shows, dispersion or infiltration is the first choice to manage runoff from airport projects. The following field guides were consulted during the development of this document. Wsp usa 1 east pratt street suite 300 baltimore, md 21202 the information contained in this report was prepared as part of nchrp project 2525, task 101, national cooperative highway research. It degrades water quality, can contaminate drinking water. Ecologys january 2008 publication, guidelines for preparing quality assurance p.
Appendix 6b wsdot media filter drain june 2008 edition of wsdot highway runoff manual 6b1 introduction 6b2 design flow elements 6b8 structural design considerations 6b8 sizing criteria 6b9 site design elements 6b appendix 6c geotextile specifications 6c1 ii. Ecologys january 2008 publication, guidelines for preparing quality assurance project. Highway runoff manual m 3116 washington state department. Mar 22, 2021 sr 401 both directions closure on sr 401 both directions from milepost 0, near astoria megler bridge to milepost 12. Wsdot stormwater design documentation spreadsheet threshold. Minimum requirements from 2008 wsdot highway runoff manual hrm figures 3. May 22, 2019 the highway runoff manual hrm provides guidance to direct the planning and design of stormwater management facilities for existing and new washington state highways, rest areas, parkandride lots, ferry terminals, and highway maintenance facilities throughout the state. Post construction best management practices manual.
Washington state water quality standards ecology stormwater management manual for western washington ecology, 2005 wsdot highway runoff manual wsdot, 2006 washington department of fish and wildlife wdfw hydraulic project approval hpa requirements the national flood insurance protection act. Upgrading by resurfacing washington state department of. Design and construction of a field test site to evaluate. The highway runoff manual hrm provides guidance to direct the planning and design of stormwater management facilities for existing and new washington state highways, rest areas, parkandride lots, ferry terminals, and highway maintenance facilities throughout the state. Highway runoff manual wsdot pdf free online publishing. Purpose, need, and scope the highway runoff manual hrm was developed to direct the planning and design of stormwater management facilities for new and redeveloped washington state highways, rest. The highway runoff manual hrm is wsdots primary source of stormwater planning and design requirements for highwayrelated work. Wsdots comprehensive annual analysis of state highway system performance. Providing technical information for the highway runoff manual updates. References bridge stormwater runoff analysis and treatment. Qapp for baseline monitoring of wsdot highway runoff.
Appendix 10 equivalent programs for runoff controls for new. Definitions from table 31 of the 2008 wsdot highway runoff manual. National cooperative highway research program transportation research board of the national academies of sciences, engineering and medicine prepared by. August 20 general use level designation for basic tss and. Washington state department of ecology through the municipal stormwater grants of regional and statewide significance to the asotin county regional stormwater program.
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