It degrades water quality, can contaminate drinking water. Highway runoff manual wsdot pdf free online publishing. The highway runoff manual represents years of extensive research, collaboration, and negotiation by an interdisciplinary technical team of water quality. Sustainable design guidelines to support the washington state. Testing of roadside vegetation for highway runoff pollutant removal,robert j. General special provisions, wsdot highway runoff manual hrm, m 3116, wsdot. 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.
Wsdot media filter drain from june 2008 edition of the wsdot highway runoff manual 6b1. Wsdot stormwater retrofit program highway runoff manual association of washington cities stormwater page mrsc stormwater page psrc vision 2040 and psrc regional growth centers draft 20 regional growth centers monitoring rep light imprint stormwater matrix congress for new urbanism rainwater in context growth management act periodic update. Wu et al, 1998 aspects of functional analysis of mitigated wetlands receiving highway runoff, shaw l. Contractors shall install the compostamended biofiltration swale as per rt. 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. Wsdot highway runoff manual approved for use for wsdot projects and by local governments for public road projects on aug. Does the project transfer water between watersheds. Design officeamericans with disabilities act ada information materials can be provided in alternative formats.
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 washington state department of. Deepa likes to spend her free time catching up on tv shows and. A copy of this agreement can be found in facilities development manual fdm 20515. Which highway runoff bmps or modifications of existing bmps are most suitable for treating phosphorus. Pe in washington state, certified erosion and sediment control lead cescl, wsdot highway runoff manual hrm trained associations. 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. Specification, american association of state highway and transportation officials, washington dc bridge design manual lrfd, m 2350, wsdot asce seismic design of piers and wharves, ascecopri 6114, 2014, american society of civil engineers, reston, va. The highway runoff manual was developed 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. Most stormwater is not treated, even when it goes into a street drain. The highway runoff manual hrm is an integral part of the obligations contained in the. It flows downstream directly into streams, lakes, and marine waters.
Vegetation adapted to these conditions has a flush of growth in the spring, followed by a period of dormancy or semidormancy. Ecologys january 2008 publication, guidelines for preparing. The highway runoff manual hrm was developed to direct the planning and design of. Environmental and engineering programs design officeamericans with disabilities act ada information materials can be provided in alternative formats. Environmental management and strategy projects clearway. Stormwater manuals washington state department of ecology.
The following manual s have been approved for use by the city engineer. The provisions in this agreement establish the basic considerations for highway stream crossings. Our storm water management plan aims to mitigate degraded stormwater runoff quality that may be caused by industrial activities at our state airport, harbor and highway facilities. In addition, wsdot would like to know what monitoring program standard. Airborne pollutant deposition, adjacent land use, and highway runoff.
Mar 20, 2021 sr 7 northbound disabled vehicle on sr 7 northbound at milepost 49. Wsdot shall minimize these discharges through, at a minimum, education activities for wsdot maintenance staff and water conservation efforts. Stormwater runoff is the leading threat to washingtons urban waters, streambeds, banks, and habitats. Transfer an amount of money equal to the 20% cost obligation to fund stand alone stormwater retrofit projects. Washington state department of transportation municipal stormwater permit march 6, 2014. Provided input on the program permitting approach, consultant personnel, schedule, scope, and budget.
Wsdot revised the hrm to maintain equivalency with the department of ecologys stormwater management manuals. Hspf hydrological simulation programfortran 1 the highway runoff manual. 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. Work is currently on winter suspension and will resume in spring of 2021. Heather trim noted for the group that jan hasselman with earthjustice is concerned about the work the group is doing. North creek interceptor and olympus meadows trunk sewer.
In early 2008, wsdot, epa, and fhwa issued new guidance on preparing. 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. Scientific framework for stormwater monitoring by the washington. Purpose, need, and scope the highway runoff manual was developed to direct the planning and design of stormwater management facilities for existing and new washington state highways, rest areas, parkandride.
Citeseerx document details isaac councill, lee giles, pradeep teregowda. It is targeted toward stormwater engineers, designers, and. The compost used for the 3inch compost blanket will conform to wsdot standard specification 914. Chapter 2 hydrology washington state department of. The wsdot manual is designed for and approved for use only for wsdot projects and by local governments for public road projects. Biofiltration swale of the wsdot 2011 highway runoff manual hrm with the addition of a 3inch compost blanket. The highway runoff manual hrm is wsdots primary source of stormwater planning and design requirements for highway related work. Wsdot temporary erosion and sediment control manual m 3109.
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. Grasses tend to have rapid growth followed by seed. Transfer an amount of money equal to the 20% cost obligation to fund stand. Yu, 1996 characterization and pollutant loading estimation for highway runoff, jy s. The wsdot manual is designed for and approved for use only for wsdot. Street and sidewalk wash water, water used to control dust, and routine external building washdown that does not use detergents. However, the wsdot program was included in wsdots stormwater permit and its ecologyapproved. Appendix a glossary washington state department of. For western washington, the water quality design volume is the 91st percentile, 24hour runoff volume indicated by mgsflood or an approved continuous runoff model see highway runoff manual table 33. Abandoned facilities those facilities located within wsdot right of way, on an. The highway runoff manual hrm provides guidance to direct the planning and design of stormwater management facilities for existing and. 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.
The board of county commissioners adopts by reference the washington state. The volume of traffic passing a point on a highway in both directions during an average day of the year or design year. 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. Appendix 10 equivalent programs for runoff controls for new. The department of ecology reissued the permit, on april 5, 2019. 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. To view or download an electronic copy of these drafts visit. Ms in environmental systems engineering, university of regina licenses and certifications. Discharges from lawn watering and other irrigation runoff. August 20 general use level designation for basic tss and. Department of ecology, 2008b will be calculated for a series of dilutions of the stormwater.
The wsdot stormwater management program swmp plan an appendix to the permit, and the highway runoff manual hrman appendix to the permit. 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. Other manuals may be approved consult the city engineer for the current list of approved alternate manuals. Environmental and engineering programs design office, washington state department of transportation. Appendix 10 equivalent programs for runoff controls for. See the complete profile on linkedin and discover raj. Mar 20, 2021 sr 302 both directions this project project removes and replaces outdated culverts under sr 302 with fish passable structures, repaves 8 miles highway, and rebuilds sidewalks and ramps at the key center intersection of sr 302sr 16. Glorilyn maw principal, hydraulic engineer mp stormwater. Meet the 20% cost obligation within the project site to the extent feasible 6 and transfer funds equivalent to the unmet. 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. Washington state department of transportation municipal.
This manual may be used for the design of public road projects. Transfer an amount of money, equal to 20% of the cost to meet stormwater. Stormwater hydraulic detention and pollutant removal properties of compost blankets on highway fill slopes. It outlines wsdots policies for preventing erosion related impacts to. 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. Upgrading by resurfacing washington state department of transportation wsdot facilities from bst to acp or pccp without expanding the area of. Wsdots comprehensive annual analysis of state highway system performance. Appendix a vegetation recommendations for airport settings. Some subsurface exploration may be required at this stage, depending on the adequacy of the geotechnical data available to assess feasibility. The western pond has been sized to detain runoff from 0. Nov, 2014 geographic implementation to higher priority watersheds. Kuhio highway emergency repairs the road reopened june 17, 2019. Basin transfer of gauge data with regional usgs equations similar hydrologic characteristics and size ratio discharge and area for gauged watershed area for ungauged watershed. The drainage manual contains standards and technical guidance for complying with the island county.
Referencing the hydraulics or highway runoff manual m 31. The hawaii department of transportation is responsible to plan, design, construct, operate, and maintain state facilities in all modes of transportation, including air, water, and land. Lynnwood link extension draft eis appendices jk part 1. Chapter 600 trestle washington state department of. Tracuw box 359446 4333 brooklyn ave ne seattle, wa 981959446 phone. The drainage manual and any amendments thereto will be available to the public at the public works department. Wsdots highway runoff manual m 3116 contains approved methods. Untreated stormwater is unsafe for people, fish, and wildlife. Wsdot highway runoff manual wsdot, 2008 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. Adt counts must be estimated using trip generation, published by the institute of transportation engineers, or using a traffic study prepared by a professional engineer or transportation specialist with expertise in traffic volume estimation. Stormwater treatment wetlands are shallow manmade wetlands that are. 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. Washington state department of transportation hydraulics manual and highway runoff manual.
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