Wsdot 2008 highway runoff manual

The hydraulics manual provides detailed information on hydrologic and hydraulic analysis related to highway design. Previous analytical approaches for assessing potential water quality effects of highway runoff on esalisted aquatic species e. Wsdot media filter drain from june 2008 edition of the wsdot highway. Subscribe to our fdot contact management subscription service to receive the most current notices, bulletins, memoranda, and other important information. Evaluation of roadside infiltration to manage stormwater. Quite simply, stormwater is runoff that flows into pipes, ditches, streams, and other receiving water bodies. Wsdot highway runoff manual approved for use for wsdot projects and by local governments for public road projects on aug. 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.

Evaluation of roadside infiltration to manage stormwater runoff in semiarid eastern washington. Links to these documents are provided in section 12. Costeffective and sustainable road slope stabilization and erosion control. Design officeamericans with disabilities act ada information materials can be provided in alternative formats. Wsdot revised the hrm to maintain equivalency with the department of ecologys stormwater management manuals. 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. 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. Wsdot maintenance staff responsible for developing roadside management plans and roadway maintenance practices. Our stormwater manuals provide stormwater permit implementation and management guidance. Eastern washington erosion prevention and sediment control. Transportations wsdot municipal stormwater general. Environmental management and strategy projects clearway. Wsdot facilities from bst to acp or pccp without expanding the area of coverage.

Directs the planning and design of stormwater control measures during construction. Hydraulics highway runoff manual additional guidance. Highway runoff manual washington state department of. 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. Originating organization engineering and regional operations division, environmental and engineering programs. Final report and nchrp report 802 appendices c through f explores the research developed for this report to help achieve surface runoff volume reduction of highway runoff in urban areas. Wsdot media filter drain from june 2008 edition of the wsdot highway runoff manual 6b1. The highway runoff manual hrm provides guidance to direct the planning and design of stormwater management facilities for existing and. Introduction chapter 1 page 12 highway runoff manual m 3116. 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 m 3116 2008, published by the washington state department of transportation 7. Washington state highway runoff water quality research.

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. 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 the national flood insurance protection act the flood disaster protection act. Urban drainage design manual september 2009 hydraulic engineering circular 22, third edition. Stormwater manual for details on planning, design, and construction. Infiltration pond section 8a sample problem description a section of highway near the city of spokane is to be improved with an additional lane in each direction. 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. Wsdot highway runoff manual wsdot, 2006 washington department of fish and wildlife wdfw hydraulic project approval hpa. Determine the required nrcs storm as described in the design distribution, storm distribution subsection below, and select it in the software program. Highway runoff manual hrm, m 3116, effective june 30, 2008. To view or download an electronic copy of these drafts visit. Highway runoff manual wsdot 2008a directs the planning and design of stormwater management facilities for new and redeveloped washington state highways and other facilities. 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. April 2008 chapter 5 hydrologic analysis and design 54.

Washington state department of transportation wsdot. An accurate count of washington residents will ensure the fair distribution of political representation and of federal and state resources. June 2008 concerns are required to obtain individual npdes construction stormwater permits from. A stormwater impact assessment chapter has been incorporated into part 3 of the wsdot biological assessment preparation for. Appendix a laboratory summaries of soils used for 2008 testing. Stormwater infiltration in highway embankments saturated hydraulic conductivity estimation for uncompacted and compacted soils. 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. 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. References volume reduction of highway runoff in urban. Design manual, published by the washington state department of transportation, most recent update currently march, 2012 200 ne moe street poulsbo, washington 983707347. The manual was designe d to be consistent with ecologys stormwater management manual for the puget sound basin published in 1991, w ith specific guidance for transportation projects. A section of highway near the city of spokane is to be improved with an additional lane in each direction.

Scientific framework for stormwater monitoring by the washington. Stormwater practices research project final report vtrans. The department of ecology reissued the permit, on april 5, 2019. It has been developed for state facilities and may not be appropriate for all county roads or city streets that are not state highways. Headquarters environmental services and hydraulics. 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. June 2012 adopted changes to 2008 pc swm manual proposed change reason source page addendum table of contents and index will need to be updated after adoption by council pagination will not be know until edits are accepted and text to be removed is removed main toc, volume tocs call out wsdot spec 903. Facilities are design ed to wsdot standards using the 2014 wsdot highway runoff manual hrm and the 2010 wsdot hydraulics manual hm. Suggested revisions to wsdot manuals for implementing washington state highway runoff water quality research results.

The highway runoff manual hrm is an integral part of the wsdot npdes municipal stormwater permit permit. To view the implementation bulletin for the current fdm, please see rdb1907. Set the routing and hydrograph time increments in the computer software program to sixminutes or less. The original highway runoff manual was published in 1995 for primary application in the puget sound basin. The wsdot manual is designed for and approved for use only for wsdot projects and by local governments for public road projects. Number of highway runoff emcs per epa rainfall zones from nsqd and hrdb. Maintenance is essential to the performance of runoff treatment and flow control bmps.

Chapter 4 affected environment and environmental consequences east link project draft eis 4. Highway runoff manual wsdot pdf free online publishing. Each of these manuals describe the preferred stormwater management practice in eastern washington as infiltration, which is ideally suited for lid implementation. Year 4, runoff water quality, august 1980august 1981. Projects going to ad after march 6, 2020 shall comply with. The design manual provides policies, procedures, and methods for developing and documenting the design of improvements to the transportation network in washington. Wsdots highway runoff manual is considered equivalent to ecologys stormwater. Wsdot highway runoff manual hrm trained associations. Environmental and engineering programs design officeamericans with disabilities act ada information materials can be provided in alternative formats. Stormwater manuals washington state department of ecology. Federal highway administration national highway institute 1200 new jersey ave. 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. Section 35 of the 2019 hrm includes two pathways for wsdot address adjustments and deviations to the minimum requirements.

Highway runoff manual endangered species act stormwater design. Evaluation of best management practices for highway runoff control. An interagency agreement between wsdot and ecology regarding the statewide application of the 2008 hrm. Wsdot highway runoff manual approved for use for wsdot projects and by local governments for public road projects 2011. Equivalent stormwater manuals for municipal stormwater. Analysis of highway stormwater runoff effects for endangered. Stormwater 101 guide stormwater overview stormwater background stormwater is now the primary cause of water pollution in the united states, resulting in numerous federal, state and local regulations. This manual should be used in conjunction with the wsdot highway runoff manual and the wsdot design manual, specifically section 1210.