Equivalent stormwater manuals for municipal stormwater. A rectangular or cylindrical wire mesh cage a chicken wire bas. Highway runoff manual wsdot pdf free online publishing. Engineering and regional operations division, environmental and engineering. For example, reister and yonge 2005 note that the washington state highway runoff manual recommends a maximum sideslope of 7.
To view or download an electronic copy of these drafts visit. 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. Section 35 of the 2019 hrm includes two pathways for wsdot address adjustments and deviations to the minimum requirements. The highway runoff manual represents years of extensive research, collaboration, and negotiation by an interdisciplinary technical team of water quality. The highway runoff manual hrm was developed to direct the planning and design of stormwater.
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. 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. References bridge stormwater runoff analysis and treatment. 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 wsdot manages its stormwater. 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. 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. 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 highway runoff manual m 3116 has been revised effective may 16, 2006 for projects going to ad after july 1, 2007. Contractors shall install the compostamended biofiltration swale as per rt. Manual equivalency in some cases, municipal stormwater permittees have the option of either adopting portions of the appropriate stormwater manual or portions of a regional manual determined to be equivalent to the ecology manual. The concept of netnew impervious surface applies only to minimum requirement 6 flow control and is. Highway runoff manual hrm, m 3116, effective june 30, 2008. 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. 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. Read volume reduction of highway runoff in urban areas. 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. Wac 1732700301 states that wsdot shall use the highway runoff. An interagency agreement between wsdot and ecology regarding the statewide application of the 2008 hrm.
Facilities are design ed to wsdot standards using the 2014 wsdot highway runoff manual hrm and the 2010 wsdot hydraulics manual hm. The hrm establishes minimum requirements and provides uniform technical guidance. Links to these documents are provided in section 12. Originating organization engineering and regional operations division, environmental and engineering programs. Environmental management and strategy projects clearway. Therefore, there will be no delay between issuing the permit and wsdot efforts to begin implementing the ecologyapproved swmp. 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. Some subsurface exploration may be required at this stage, depending on the adequacy of the geotechnical data available to assess feasibility. Determine if site conditions are appropriate for dispersion andor infiltration as figure 41 shows, dispersion or infiltration is the first choice to manage runoff from airport projects. The concept of netnew impervious surface applies only to minimum requirement 6 flow control and is applied at the threshold discharge area level. Example of a database table from the national highway runoff database, v. Pe in washington state, certified erosion and sediment control lead cescl, wsdot highway runoff manual hrm trained associations. The highway runoff manual hrm is an integral part of the obligations contained in the.
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. Opinion for wa state department of transporation, res. In addition, wsdot would like to know what monitoring program standard operating procedures and qualityassurance protocols are necessary to meet their npdes permit requirements. Deepa likes to spend her free time catching up on tv shows and.
Hrm highway runoff manual wsdot 2006 mse mechanically stabilized earth project sr 99. Guidance manual supports evaluation, selection, siting, design, and construction of infiltration bmps in the highway environment. Changes can be proposed by submitting a hdm revision request form to hdm. Maintenance is essential to the performance of runoff treatment and flow control bmps. Stormwater infiltration in the highway environment. The highway runoff manual represents years of extensive research, collaboration, and negotiation by an interdisciplinary technical team of water quality, stormwater, and erosion control specialists. Facilities are design ed to wsdot standards using the 2014 wsdot highway runoff manual hrm and the 2010 wsdot hydraulics manual.
If wsdot proposes to adopt a manual other than ecologys stormwater management manual as its highway runoff manual, wsdot shall formally consult with the tribes and local governments about the contents of the highway runoff manual. Refer to the foreword section of the hdm for more information. Introduction chapter 1 page 12 highway runoff manual m 3116. Hydraulics highway runoff manual additional guidance wsdot. Download washington state highway runoff manual lawn epub. Ecology stormwater management manual for western washington. 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.
Highway runoff manual washington state department of. Wsdot maintenance staff responsible for developing roadside management plans and roadway maintenance practices. This manual may be used for the design of public road projects. Stormwater manuals washington state department of ecology. 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. Environmental and engineering programs design officeamericans with disabilities act ada information materials can be provided in alternative formats. Chapter 25 right of way 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. 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. As to the meat of your question, yes, the swm and all the receivers should all have the. Wsdot media filter drain from june 2008 edition of the wsdot highway runoff manual 6b1. In addition, wsdot would like to know what monitoring program standard. The redevelopment standards and lists of approved storm water treatment best management practices bmps are incorporated into wsdot s 2004 highway runoff manual hrm. Eric mendel associate project manger water resources. The puget sound runoff program requires wsdot to comply with regulations in the highway runoff manual. The highway runoff manual hrm provides guidance to direct the planning and design of stormwater management facilities for existing and. August 20 general use level designation for basic tss and. Ecology incorporated wsdot s 2008 swmp plan into its new state stormwater permit as an appendix.
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. Ms in environmental systems engineering, university of regina licenses and certifications. Improve management strategies to reduce contamination from street runoff. Post construction best management practices manual. Other manuals may be approved consult the city engineer for the current list of approved alternate manuals. National cooperative highway research program transportation research board of the national academies of sciences, engineering and medicine prepared by.
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. Brought to you by free law project, a nonprofit dedicated to creating high quality open legal information. Highway design manual change transmittal memorandums are issued summarizing the significant changes and are posted by change date. Construction stormwater pollution prevention snohomish county. The compost used for the 3inch compost blanket will conform to wsdot standard specification 914. Citeseerx document details isaac councill, lee giles, pradeep teregowda. Minimum requirements from 2008 wsdot highway runoff manual hrm figures 3.
Biofiltration swale of the wsdot 2011 highway runoff manual hrm with the addition of a 3inch compost blanket. Documentation a copy of the executive summary of the project drainage design report that includes, at minimum, the following. Geological survey usgs was approached by wsdot to conduct an assessment of their current stormwater monitoring program. A stormwater impact assessment chapter has been incorporated into part 3 of the wsdot biological assessment preparation for. Puget sound highway runoff program wac 173270 establishes procedures and water quality criteria for wsdot s highway runoff program. Highway capacity manual hcm 2000, transportation research board.
Washington state department of transportation wsdot. It is also intended to identify limitations on the use of infiltration and. The following manual s have been approved for use by the city engineer. Facility type criteria model infiltration facilities size facility to infiltrate sufficient volumes so that the continuous simulation overflow matches the duration standard, and check. The highway runoff manual shall be consistent with ecologys stormwater management manual and shall be adopted by. Project interview with mark maurer, pla, pe, highway runoff program manager. The department of ecology reissued the permit, on april 5, 2019. Washington state department of transportations wsdots national. Headquarters environmental services and hydraulics. Eastern washington erosion prevention and sediment control.
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. 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. Specification, american association of state highway and transportation officials, washington dc bridge design manual lrfd, m 2350, wsdot asce. The technical team also includes several county representatives and benefits from a close working relationship with washington state department of ecology ecology staff, with work also. 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. See the complete profile on linkedin and discover raj. The trb national cooperative highway research programs nchrp research report 922. All in all, wsdot is an important partner, helping kent improve its transportation system. Chapter 3 minimum requirements highway runoff manual m 3116. It degrades water quality, can contaminate drinking water. 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.
Wsdot highway runoff manual or a stormwater manual adopted by a local. Average monthly precipitation for phoenix sky harbor international airport in. Sampling and testing of stormwater runoff from north carolina highway. Engineering and regional operations division, environmental and engineering programs. Appendix 10 equivalent programs for runoff controls for new. Stormwater manual for details on planning, design, and construction.
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