Pierce county stormwater management and site development manual, 2015. City of arlington council agenda bill arlington, wa. Overview of manual development the original highway runoff manual was published in 1995 for primary application in the puget sound basin. Nov, 2014 geographic implementation to higher priority watersheds. 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. However, the wsdot program was included in wsdot s stormwater permit and its ecologyapproved.
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 shall apply the technical standards in the washington state highway runoff manual hrm for the planning, design, and operation and maintenance of stormwater facilities in phase i, phase ii, and as applicable for tmdl areas covered under this permit. The you can find specific information on wsdot s monitoring special accommodations. In addition, as an ecologyapproved equivalent manual, the city can use the washington department of transportations highway runoff manual for road projects.
Heather trim noted for the group that jan hasselman with earthjustice is concerned about the work the group is doing. Programmatic monitoring approach for highway stormwater runoff in support of endangered species act esa section 7 consultation pdf 54 kb january 2010 top. Stormwater management requirements are satisfied by the application of. Apr 05, 2019 this lack of infiltration results in excess stormwater running off state highway facilities each year. Included in this document is the description of cabs, use of cabs by wsdot, approvals for cabs. Performance testing of alternative media for use in. Low impact development lid designs incorporated where feasible for wsdot facilities and road projects chapter 5. The permit requires wsdot to adopt and implement a stormwater management program plan swmp. Download washington state highway runoff manual lawn epub. Guidelines to design to wsdot highway runoff manual standards, at a minimum. One of the few bmps in the highway runoff manual that is approved for enhanced dissolved metals treatment is the media filter drain. Stormwater infiltration in the highway environment.
Average monthly precipitation for phoenix sky harbor international airport in. Scj will reconfirm geometric design used for the 2014 conceptual. Govpublications manuals foreword, title highway runoff manual, year 2014. Hydraulics highway runoff manual additional guidance. Water quality program march 2014 wsdot reissued a why it. Washington ecology 2014, is to compute the scaling factor as the. The following design reference will be used washington state department of transportation wsdot publications highway runoff manual m 3116, april 2014 february, 2016 supplement hydraulics manual m. 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. Nacto urban bikeway design guide training april 2014. For steeper slopes, specific attention should be given to effective spreading of flow and maintaining sheet flow. The highway runoff manual hrm is an integral part of the wsdot npdes municipal stormwater permit permit.
On april 14, 2011, wsdot, fhwa, noaa fisheries, usfws and wsdot signed a moa committing these four. Post construction best management practices manual. 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. While federal and state stormwater requirements are subject to change, this. Wsdot s highway runoff manual hrm wsdot s hrm, incorporated as appendix 1 of the permit, provides design standards required for development and redevelopment projects statewide.
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. Process and procedure changes for documenting storm water quality improvements 2. International stormwater bmp database version 20161117 accessed at. Questions for information on course content, contact alex nguyen. Water quality program march 2014 wsdot reissued a why. Thurston county drainage design and erosion control manual. Stormshed3g has options that can customize a design to make following the wsdot hydraulics manual hm and highway runoff manual hrm requirements easier.
Biological assessment industrial way and oregon way. Wsdot must use proven stormwater treatment bmps when required by their municipal stormwater permit. A stormwater impact assessment chapter has been incorporated into part 3 of the wsdot biological assessment preparation for. The department of ecology reissued the permit, on march 6, 2014. The following design reference will be used washington state department of transportation wsdot publications highway runoff manual m 3116, april 2014 february, 2016 supplement hydraulics manual m 2303, march, 2017. All consultants who prepare hydraulics reports for wsdot must have completed the 2014 highway runoff manual training course. Indirect effects stormwater runoff analytical method. Highway runoff manual wsdot pdf free online publishing. Maintain the mfd facility per the maintenance standards for media filter drains in the wsdot 2014 hrm. Wsdot municipal stormwater permit washington state.
You must use lid bmps where feasible for these facilities. Current permit and related documents wsdot municipal stormwater general permit effective april 5, 2019 fact sheet with response to comments application for coverage notice of intent highway runoff manual hrm. Facilities are design ed to wsdot standards using the 2014 wsdot highway runoff manual hrm and the 2010 wsdot hydraulics manual hm. Wsdot remains in compliance with s4 despite any discharges prohibited by s4. The manual was designed to be consistent with ecologys stormwater. These bmps must either be included in the highway runoff manual or approved through tape. Sampling and testing of stormwater runoff from north carolina highway.
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. Washington state department of transportation wsdot. Wsdot 2019 hrm update training only for those who already have a 2014 hrm certificate number. Final biological resources technical memo 2015 03 17 clean. Arlington stormwater standards, wsdot highway runoff manual chapter 23. Highway design manual change transmittal memorandums are issued summarizing the significant changes and are posted by change date. 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. Low impact development technical guidance manual for puget sound, december 2012 washington state department of transportation, highway runoff manual, march 2014. Engineering and regional operations division, environmental and engineering programs. The puget sound runoff program requires wsdot to comply with regulations in the highway runoff manual. If you need this publication in an alternate format, call the water quality program at 3604076401. An implementing agreement with the washington state department of ecology ecology commits wsdot to. Improving stormwater management using low impact development lid practices, nov 2005 uw. Changes can be proposed by submitting a hdm revision request form to hdm.
The highway runoff manual m 3116 has been revised effective may 16, 2006 for projects going to ad after july 1, 2007. Project interview with mark maurer, pla, pe, highway runoff program manager. B when wsdot undertakes the following response toward longterm water quality improvements. Stormwater manuals washington state department of ecology. Refer to the foreword section of the hdm for more information. Appendix 10 equivalent programs for runoff controls for new. Providing technical information for the highway runoff manual updates. 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. Hydraulics training highway runoff manual training workshop the highway runoff manual hrm is wsdots primary source of stormwater planning and design requirements for highwayrelated work. Cabs is included in the wsdot 2014 highway runoff manual and is a top choice in wsdot s bmp hierarchy. Stormwater management manual for western washington ecology, 2012 washington state department of transportation wsdot highway runoff manual wsdot, 2014 washington state department of transportation hydraulics manual wsdot, 2015 washington department of fish and wildlife wdfw hydraulic project approval hpa requirements.
The department of ecology reissued the permit, on april 5, 2019. The highway runoff manual hrm is an integral part of the obligations contained in the washington state department of transportations wsdots national pollutant discharge elimination system npdes municipal stormwater permit permit. The clallam county public works department is a member of the regional road maintenance program and uses the wsdot 2014 highway runoff manual and the 2016 supplement. Equivalent stormwater manuals for municipal stormwater. 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. For example designers can now set the duration of a design storm ew short duration storms, making it simpler than the old 24 hour default when using design storms. For example, wsdot 2014 notes that its highway runoff manual recommends a maximum sideslope of 4h. The soil amendments improve infiltration characteristics, increase surface roughness, and improve plant sustainability. Highway runoff manual washington state department of. Wsdot revised the hrm to maintain equivalency with the department of ecologys stormwater management manuals. Example of a database table from the national highway runoff database, v.
Washington department of ecology stormwater management manual for western washington, august 2012. Transportation highway runoff manual wsdot 2008a directs the planning and. Dec 05, 2018 wsdot s highway runoff manual hrm will include actions and activites that are designed to reduce and prevent the discharge of pollutants from ms4 to the maximum extended practicable to meet the state akart requirements and to protect water quality. Hydraulics manual hm conveyance policy and design, hydrology and hydraulic methods, bridge design, stream design, lwm, fish passage, pipe materials highway runoff manual hrm stormwater policy and minimum requirements to meet the clean water act. The cavfs is a variation of the basic vegetated filter strip that adds soil amendments to the roadside embankment see figure v7. The trail will be designed and constructed within wsdot sr202 rightofway.
The mfd ecology mix will consist of materials identified in rt. Process and procedure changes for documenting storm. Section 54 includes detailed design criteria for each permanent bmp and section 55. Section 35 of the 2019 hrm includes two pathways for wsdot address adjustments and deviations to the minimum requirements. Hydraulics highway runoff manual additional guidance wsdot. Marbled murrelet effects thresholds pdf 73 kb february 2014. Highway runoff manual endangered species act stormwater design checklist for eastern. The 2012 as amended in 2014 edition of ecologys stormwater management manual for western washington is hereby adopted by reference and is hereinafter referred to as the manual. Stormwater flow control and runoff treatment bmp design, stormwater retrofit.
Appendix 10 equivalent programs for runoff controls for. Wsdot s highway runoff manual hrm will include actions and activites that are designed to reduce and prevent the discharge of pollutants from ms4 to the maximum extended practicable to meet the state akart requirements and to protect water quality. These manuals provide more specific stormwater bmp information related to parking lot and industrial settings. Wsdot 2019 highway runoff manual training workshop 4 day gotowebinar scheduled training dates. An earlier attempt to update stormwater management activities occurred from 2010.
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