Application of the revised guidance in the may 2006 hrm is optional, but encouraged for. Wsdot pavement guide interactive, washington state. Wsdot s overall mission is to improve safety and capacity of the states transportation infrastructure. Evaluation of best management practices for highway runoff control. Wsdot must use proven stormwater treatment bmps when required by their municipal stormwater permit. This includes rest areas and parkandride lots, throughout washington state wsdot, 2006. Local governments may use the hrm to identify stormwater management strategies for. Hrm program manager wsdot po box 47329 olympia, wa 985047329 what happens when compliance with the hrm is not economically feasible, physically possible, or environmentally responsible. Stormwater planning and design integration 21 introduction this chapter provides guidance for integrating the planning and design of stormwaterrelated project elements into the context of the washington state department of transportation wsdot project development process.
This manuals approach is consistent with wsdots objective of implementing a statewide highway runoff program that applies sound engineering principles to satisfy federal and state requirements. Department of ecology and codified in chapter 173270 highway runoff rule of the washington administrative code. Highway runoff manual wsdot pdf free online publishing. Design officeamericans with disabilities act ada information materials can be provided in alternative formats. Wsdot modified media filter drain washington stormwater center. Wsdot has developed its own highway runoff manual, which ecology has determined is functionally equivalent to the 2005 manual and is applicable in both eastern and western washington. The highway runoff manual represents years of extensive research, collaboration, and negotiation by an interdisciplinary technical team of water quality. Changes can be proposed by submitting a hdm revision request form to hdm.
Publications transmittal transmittal number pt 10062 date august 2010 publication title publication number highway runoff manual name m 3116. Wsdot currently participates in regional efforts advancing public education and outreach, revisions. Wsdot met the new design standards in an updated highway runoff manual. The department of ecology reissued the permit, on march 6, 2014. Highway runoff manual, m 3116, wsdot hydraulics manual, m 2303, wsdot standard plans for road, bridge, and municipal construction standard plans, m 2101, wsdot standard specifications for road, bridge, and municipal construction standard specifications, amendments and general special provisions, m 4110, wsdot utilities manual, m 2287. 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. Section 35 of the 2019 hrm includes two pathways for wsdot address adjustments and deviations to the minimum requirements. Washington state department of transportations wsdots national.
The wsdot highway runoff manual includes detailed design criteria for three configurations side slope with underdrain, median configuration with under drain, and side slope application without underdrain, and, at the time of this writing, wsdot was in the process of developing guidance for additional configurations that was due to be pub. Wsdot experiences using compost on roadside applications. Hydraulics highway runoff manual additional guidance. Wsdot maintenance staff responsible for developing roadside management plans and roadway maintenance practices. In addition, wsdot would like to know what monitoring program standard. It degrades water quality, can contaminate drinking water. Appendix 2b highway runoff manual m 3116 page 2b8 december 2006 21. Where erosion potential is low, this sheet flow of highway drainage does not present any problem to adjacent property. There is no dispute the wsdot sr520 construction project complied with the standards for the puget sound runoff program and the wsdot highway runoff manual. Highway runoff manual washington state department of. National cooperative highway research program transportation research board of the national academies of sciences, engineering and medicine prepared by. The methodology includes the western washington highway runoff dilution and loading stormwater model hi run model, its user guide, and accompanying stormwater assessment guidance that is posted below.
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. Low impact development design manual for highway runoff control. The highway runoff manual hrm is an integral part of the wsdot npdes municipal stormwater permit permit. Focus on highway runoff manual from ecologys water quality program ecology statement concerning use by local governments of the updated 2004 wsdot highway runoff manual the department of ecology has given a conditional approval to the washington state department of transportations wsdot 2004 highway runoff manual hrm. While the 1995 edition did not mention compost once, the 2004 update mentions compost 165 times. The highway runoff manual the wsdot highway runoff manual contains approved methods of dealing with runoff from wsdot facilities. The manual was designed to be consistent with ecologys stormwater. The highway runoff manual shall be consistent with ecologys stormwater management manual and shall be adopted by wsdot only after obtaining ecologys approval. Untreated stormwater is unsafe for people, fish, and wildlife. If you need this publication in an alternate format, call the water quality program at 3604076401. Wsdot highway runoff manual cavfs a bmp for water quality treatment saw flow control benefits but need data to qualify as flow control bmp.
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. Chapter 3 minimum requirements highway runoff manual m 3116. Wsdot stormwater design documentation spreadsheet threshold. A stormwater impact assessment chapter has been incorporated into part 3 of the wsdot biological assessment preparation for. Introduction chapter 1 page 12 highway runoff manual m 3116. Place stormwater facilities away from the stream to the extent practicable, and take measures to preserve or enhance riparian buffers. 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. 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. Page 22 highway runoff manual m 3116 october 2006 the level of effort invested during each phase of development and the extent to which the phases overlap for a specific project varies depending on. The highway runoff manual hrm is an integral part of the obligations contained in the washington state department of transportations wsdot s national pollutant discharge elimination system npdes municipal stormwater permit permit. Specification, american association of state highway and transportation officials, washington dc bridge design manual lrfd, m 2350, wsdot asce. Research washington state highway runoff water quality. Wsdot modified media filter drain washington stormwater. The you can find specific information on wsdot s monitoring special accommodations.
Environmental and engineering programs design officeamericans with disabilities act ada information materials can be provided in alternative formats. Wsdots highway runoff manual m 3116 directs the planning and design of stormwater management facilities that meet state and federal regulations for new. Highway runoff manual m 3116 page 21 october 2006 chapter 2. 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. Wsdot intranets highway runoff manual resource webpage. The highway runoff manual hrm provides guidance to direct the planning and design of stormwater management facilities for existing and. These bmps must either be included in the highway runoff manual or approved through tape. The highway runoff manual hrm is an integral part of the obligations contained in the. Equivalent stormwater manuals for municipal stormwater.
After obtaining ecologys approval, 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. Presentation from the 2006 caltranscalifornia integrated waste management board ciwmb erosion control workshop series sponsored by the ciwmb. Compacted subsoil and topsoil typically began producing runoff within 5 to 8 minutes after rainfall began, areas treated with any of the. Download washington state highway runoff manual lawn epub. Wsdot, engineering consultants, and many local agencies use the hrm to design stormwater systems for transportation projects. Hydraulics highway runoff manual additional guidance wsdot. Check with them first before beginning field investigations.
The highway runoff program is implemented by the highway runoff manual. 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 the flood disaster protection act. The highway runoff manual m 3116 has been revised effective may 16, 2006 for projects going to ad after july 1, 2007. The concept of netnew impervious surface applies only to minimum requirement 6 flow control and is applied at the threshold discharge area level. This type of channel includes rivers, culverts, stormwater systems that flow by. Wsdot media filter drain from june 2008 edition of the wsdot highway runoff manual 6b1. The department of ecology reissued the permit, on april 5, 2019. The headquarters environmental services office stormwater and watersheds program and headquarters. The mfd ecology mix will consist of materials identified in rt.
Facility type criteria model infiltration facilities size facility to infiltrate sufficient volumes so that the continuous simulation overflow matches the duration standard, and check. Wsdot highway runoff manual permit requirements the phase i municipal stormwater permit special condition s5. Postconstruction stormwater management controls prescribed by the highway runoff manual hrm. Maintain the mfd facility per the maintenance standards for media filter drains in the wsdot 2014 hrm. National highway runoff waterquality data and methodology synthesis, volume iiiavailability and documentation of published information for synthesis of regional or national highway runoff quality data, publication no.
The washington state department of transportation wsdot university of washington highway runoff water quality research project, conducted from 1977 to 1982, produced a number of results of potential use to wsdot. While federal and state stormwater requirements are subject to change, this. Stormwater planning and design integration 21 introduction this chapter provides guidance for integrating the planning and design of stormwaterrelated. Cabs is included in the wsdot 2014 highway runoff manual and is a top choice in wsdot s bmp hierarchy.
Wsdot highway runoff manual wsdot, 2006 washington department of fish and wildlife wdfw hydraulic project approval hpa requirements the national flood insurance protection act the flood disaster protection act sections 401, 402, and 404 of the clean water act. The puget sound runoff program requires wsdot to comply with regulations in the highway runoff manual. The highway runoff manual hrm was developed to direct the planning and design of. Wsdot maintains over 7,000 miles of highway and 35,000 acres of facilities. 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. Citeseerx document details isaac councill, lee giles, pradeep teregowda. For geotechnical stability, the site investigation and design requirements provided in chapters 2, 7, 9, and 10 are applicable.
In addition, ecology approved a wsdot proposal to meeting the manual s triggered retrofit obligations by building some flexibility into where these obligations are met. An effort was required to implement these results in the departments procedures. One of the few bmps in the highway runoff manual that is approved for enhanced dissolved metals treatment is the media filter drain. Highway design manual change transmittal memorandums are issued summarizing the significant changes and are posted by change date. In order to use this concept, the existing impervious surface removal area must fully revert to a natural condition as specified in highway runoff manual section 43. Included in this document is the description of cabs, use of cabs by wsdot, approvals for cabs. Stormwater management manual the activity is covered under the wsdot stormwater general permit and is designed in accordance with the wsdot highway runoff manual, provided that any more restrictive city of everett requirements are met. Wsdot revised the hrm to maintain equivalency with the department of ecologys stormwater management manuals. Overview of manual development the original highway runoff manual was published in 1995 for primary application in the puget sound basin. Wac 1732700301 states that wsdot shall use the highway runoff.
Refer to the foreword section of the hdm for more information. What stormwater management design standards were applied. Programmatic monitoring approach for highway stormwater runoff in support of endangered species act esa section 7 consultation pdf 54 kb january 2010 top. Oct 24, 2016 the highway runoff manual provides standards that wsdot designers should use to plan appropriate storm water controls. Runoff from composttreated areas during a 30minute high intensity rain storm was less than 0.
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