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. Transportation highway runoff manual 2014 hrm, and found that it meets design requirements and best management practices for public road projects, equivalent to ecologys 2012 stormwater management manual for western washington as amended in december 2014 and 2004 stormwater management manual for eastern washington. See local jurisdiction manuals where available and ensure that all local requirements are met. Stormwater management manual for eastern washington. Whats changed in the roadside manual for october 2017. Drainage manual including but not limited to, storm frequency, freeboard, width and depth. 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. The temporary erosion and sediment control manual tescm replaces chapter 6 and appendix 6a of the washington state department of transportation wsdot highway runoff manual. Chapter 1010 youtube video chapter 1120 youtube video chapter 1610 youtube video request copies of the presentation powerpoint files by emailing dustin saunders at dustin.
The manual is intended for project planning, scoping, environmental permitting, and for engineering designers, landscape architects, and construction and maintenance personnel. Used together, hrm and hydraulics manual m 2303, provide tools for designing effective stormwater. The highway runoff manual hrm provides guidance to direct the planning and design of stormwater management facilities for existing and. Fish passage, stream design, and bridge scour pdf 9. Included in this document is the description of cabs, use of cabs by wsdot, approvals for. Design criteria for infiltration, minnesota stormwater manual, minnesota. A manual with a more specific focus, such as the washington state department of transportation wsdot highway runoff manual or a stormwater manual adopted by a local. Hydraulics highway runoff manual additional guidance wsdot. Demonstrative approaches to protecting water quality. Wsdot media filter drain from june 2008 edition of the wsdot highway runoff manual 6b1. Jul 27, 2006 wsdot has a municipal npdes phase 1 permit that effectively requires it to mitigate impacts to water resources for its improvement projects.
Wsdot manuals and publications are updated continuously and revisions are issued periodically. Local local governments may use the hrm to identify stormwater management strategies for their road. 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. This data set was developed specifically for the stormwater management manual for eastern washington ecology, 2004. The hydraulics manual provides detailed information on hydrologic and hydraulic analysis related to highway design. Overview of manual development the original highway runoff manual was published in 1995 for primary application in the puget sound basin. Citeseerx document details isaac councill, lee giles, pradeep teregowda. All old copies of the manual are no longer in effect. The headquarters environmental services office stormwater and watersheds program and headquarters. The highway runoff manual shall be consistent with ecologys stormwater management manual and shall be adopted by wsdot only after obtaining ecologys approval. The march 2004 highway runoff manual hrm was revised to improve content clarity and to reflect advancements in stormwater management and improvement in design tools.
Oregon state university, geosyntec consultants, university of florida and the low impact development center, inc. Guidance manual explores practices for the reduction of stormwater volumes in urban highway environments. Bmps for residential, commercial and industrial development and road projects are included. Our stormwater manuals provide stormwater permit implementation and management. Highway runoff manual the highway runoff manual m 3116 hrm summarizes stormwater management requirements and describes approved methods of managing stormwater runoff known as best management practices bmps. Roadside policy manual washington state department of. Wsdots highway runoff manual m 3116 directs the planning and design of stormwater management facilities that meet state and federal regulations for new and redeveloped washington state highways, rest areas, parkandride lots, ferry terminals, and highway maintenance facilities throughout the state. The utilities manual has been prepared to outline the general practices, policies, and procedures in the design, administration, and coordination of utilities and railroad facilities within washington state department of transportation wsdot properties or impacted by the departments highway projects. Appendix 10 equivalent programs for runoff controls for new.
Maintenance is essential to the performance of runoff treatment and flow control bmps. Design manual update information latest design manual revision package. The highway runoff manual hrm is an integral part of the. Wsdot highway runoff manual approved for use for wsdot projects and by local governments for public road projects on aug. The results of this phase are presented in a two volume implementation manual and this document listing the suggested modifications to the wsdot design manual, highway hydraulic manual, quality standards for highway maintenance, and maintenance manual to reflect the results of the research and criteria development. Read volume reduction of highway runoff in urban areas. The highway runoff manual provides standards that wsdot designers should use to plan appropriate storm water controls. The manual includes design details for all stormwater facility types recommended for an airport environment, even if those bmps are relatively unchanged from the highway runoff manual or ecology manuals. Highway runoff manual transportation research board. Implementation of the current version of the hdm shall be applied to ongoing projects in accordance with hdm index 82. The redevelopment standards and lists of approved storm water treatment best management practices bmps are incorporated into wsdot s 2004 highway runoff manual hrm. Numerous design parameters have been established in this and other guidance sources for the use of lid principles such as. Originating organization engineering and regional operations division, environmental and engineering programs. Grain size distribution data from borehole samples were used to estimate infiltration rate by applying the massmann method described in the wsdot highway runoff manual hrm.
Wsdot highway runoff manual or a stormwater manual adopted by a local jurisdiction, may provide more appropriate guidance to the project proponent. Chapter 1introduction country, and results of wsdot s own testing of innovative stormwater management practices. 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. The highway runoff manual hrm was developed to direct the. Highway runoff manual wsdot pdf free online publishing. Wsdot has a municipal npdes phase 1 permit that effectively requires it to mitigate impacts to water resources for its improvement projects. Precipitation values on all maps are shown in 110 inch increments along digitized isopluvial arcs.
This lack of infiltration results in excess stormwater running off state highway facilities each year. Specific bmps will not be determined until later in the design and permitting process. How to use the highway runoff manual and hydraulics manual pdf 574 kb. Wsdot municipal stormwater permit washington state. The highway runoff manual m 3116 has been completely revised effective march 31, 2004.
Limitations no aquifer protection areas treatment credit. 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. Introduction chapter 1 page 12 highway runoff manual m 3116. Engineering and regional operations division, environmental and engineering programs. Wisconsin construction site erosion control and stormwater management. Stormwater management manual for western washington, stormwater management manual for eastern washington, and the wsdot s highway runoff manual. The wsdot headquarters hydraulics section provides technical support, training and policy in the fields of hydraulics, fish passage, hydrology and stormwater to ensure our roadways provide a safe, effective and efficient movement of people and goods while maintaining the natural movement and treatment of water throughout our watersheds and water bodies. Stormwater infiltration in the highway environment.
This allows the manual to be a standalone reference. Trbs national cooperative highway research program nchrp report 802. It outlines wsdot s policies for meeting the national pollutant discharge elimination system npdes construction stormwater general permit requirements and the. Eastern washington representatives requested that ecology instead create a separate manual for the eastern portion of the state. Introduction to the hydraulic report pdf 742 kb lesson 8. Section 35 of the 2019 hrm includes two pathways for wsdot address adjustments and deviations to the minimum requirements. Roadside integrated vegetation management plans ivm, wsdot. Refer to the local critical areas ordinances for details on aquifer and wellhead protection areas applicable to the project site. Wsdot 2004 highway runoff manual to determine the corresponding. While the 1995 edition did not mention compost once, the 2004 update mentions compost 165 times. Washington in august 2001 as an update to a predecessor manual prepared in 1992 and initially proposed that the manual for western washington could be updated to cover the entire state of washington. Wsdot maintenance staff responsible for developing roadside management plans and roadway maintenance practices. 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.
Process and procedure changes for documenting storm water quality improvements 2. Links to these documents are provided in section 12. This manual should be used in conjunction with the wsdot highway runoff manual and the wsdot design manual, specifically section 1210. Highway runoff manual washington state department of. It is expected that all stormwater values extracted from these maps or from the. Department of transportation s wsdot 2004 highway runoff manual hrm. Trb evaluation of best management practices for highway runoff control. Wsdot will construct a large number of projects to replace culverts that have become impassable to migrating fish. Eastern washington stormwater manual isopluvial maps.
The puget sound runoff program requires wsdot to comply with regulations in the highway runoff manual. Application of the revised guidance in the may 2006 hrm is optional, but encouraged for. Bmps will be designed to meet the basic treatment requirements as defined in the wsdot highway runoff manual, which is equivalent to the ecology manual 2005, or the applicable stormwater. Chapter 3 minimum requirements highway runoff manual m 3116. Highway runoff manual m 3116 wsdot access washington. Chapter 2 stormwater planning and design integration. Evaluation of best management practices for highway runoff control. The march 2004 highway runoff manual hrm was revised to improve content clarity and to reflect. Wsdot considers this manual to include all known, available, and reasonable methods of prevention and treatment akart for stormwater runoff discharges consistent with state and. Research eastern washington steep slope research for. 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.
Highway runoff manual, washington state department of transportation. Low impact development technical guide manual king county. Appendix 2b and appendix 6a of the highway runoff manual has been revised. This manual is applicable to all types of land development. Epa states that the primary sources of these metals are caused by wear. Eastern washington erosion prevention and sediment control. 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 to meet the requirements of chapters 30.
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. Process and procedure changes for documenting storm. The manual was designed to be consistent with ecologys stormwater. 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. Environmental and engineering service centerpersons with disabilities may request this information be prepared and supplied in alternate formats by calling the washington state department of transportation ada accommodation hotline collect 2063892839. Hydraulics highway runoff manual additional guidance. The department of ecology reissued the permit, on april 5, 2019. Wsdot revised the hrm to maintain equivalency with the department of ecologys stormwater management manuals. Chapter 830, revegetation for stream restoration and fish passage projects, has been added.
Consult the washington state department of transportation wsdot 2008 highway runoff manual hrm, standard plans, and standard specifications for details related to highway and road construction. It is the responsibility of users to make sure they have the current versions, regardless of the manual format or means of transmission. Stormwater manuals washington state department of ecology. The highway runoff manual m 3116 has been revised effective may 16, 2006 for projects going to ad after july 1, 2007.
Equivalent stormwater manuals for municipal stormwater. Hydrologic processes and large woody material pdf 15 mb lesson 5. Headquarters environmental affairs and hydraulics remarks. The application of standard factors of safety per the hrm resulted in estimated infiltration rates of 0.
Each of these manuals describe the preferred stormwater management practice in eastern washington as infiltration, which is ideally suited for lid implementation. Temporary erosion and sediment control manual wsdot. 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. Wsdot highway runoff manual approved for use for wsdot projects and by local governments for public road projects 2011.
Cabs is included in the wsdot 2014 highway runoff manual and is a top choice in wsdot s bmp hierarchy. In an effort to evaluate design criteria, for both vfs and dispersion, that aligns with the 33% highway embankment limit, 45 sites in eastern washington were inventoried to determine the specific site characteristics that contribute to concentration of highway runoff on slopes steeper than 15%. The highway runoff manual represents years of extensive research, collaboration, and negotiation by an interdisciplinary technical team of water quality. Stormwater manual for details on planning, design, and construction. Fhwa, wsdot, and the city of seattle appreciate receiving your. How to use the highway runoff manual and hydraulics manual pdf 574 kb lesson 7. An accurate count of washington residents will ensure the fair distribution of political representation and of federal and state resources. Highway design manual change transmittals are posted by change date and include a summary of the significant changes.