Increase the depth, number of test holes or test pits, and sampling described below if a licensed civil geotechnical engineer with relevant geotechnical design expertise p. Summary of toxicity screening results in undiluted samples c. Swmmww stormwater management manual for western wa. Federal highway administration fhwa and the federal transit. For the latest covid19 health guidance, statistics and resources, visit coronavirus. Year 4, runoff water quality, august 1980august 1981, ward 39. 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. Highway stormwater runoff quality is highly variable in space and time. Imts accredited construction materials laboratories perform a wide variety of procedures and tests on civil and structural materials for qualification, quality assurance and quality control purposes. Department of transportation federal highway administration 7li capital way south, suite 501 ms 40943 olympia, washington 985011284. Highway runoff is an important nonpoint source of pollutants, especially metals. Controlling nonpoint source runoff pollution from roads, highways and bridges. Coordinate emergency inspection for roadway safety and structure integrity. Introduction chapter 1 page 12 highway runoff manual m 3116.
The roadside manual supplements the roadside policy manual rpm by explaining how to implement the policies found in the rpm. Excessive concentrations of these microorganisms can. Highway runoff treatment performance evaluation of compost amended. Evaluation of best management practices for highway runoff control oregon state university corvallis, or geosyntec consultants portland, or boston, ma university of florida gainesville, fl the low impact development center, inc. Wetlands during highway construction 2531 guidelines for evaluating and selecting modifications to existing roadway drainage infrastructure to improve water quality in ultraurban areas 2532 measuring and removing dissolved metals from storm water in highly urbanized areas 2540 longterm performance and lifecycle costs of stormwater best. Publications standard specifications for road, bridge, and. Wsdot revised the hrm to maintain equivalency with the department of ecologys stormwater management manuals. Transport deposition and control of heavy metals in highway runoff, ward 39. Two passing lanes were added near colfax last summer and four more between colfax and spangle are under construction this summer. Controlling nonpoint source runoff pollution from roads, highways and bridges epa, office of water, august 1995 epa841f95008a note. The washington state department of transportation wsdot university of washington highway runoff water quality research project, conducted from 1977 to 1982, produced a number of results of potential use to wsdot.
Chapters include laws and policies, visual functions, wetlands, wildlife, safety rest areas, soil amendments, contour grading, soil bioengineering. An effort was required to implement these results in. Highway 35, approximately three and one half miles south of highway 30 in the northcentral and central portions of t 83 n, r 23 w, section 31. Hydrographic toxicity evaluation of highway stormwater runoff figure 15. Jun 25, 2018 the us 195 passing lane project was paid for in the legislatures connecting washington funding package to alleviate the potential for headon collisions along the highway. Resulting table may be copied to mgsflood for analysis. 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 caught off guard by success of i405 shoulder driving.
Hydraulic performance of grass swales for managing highway. Proposed to meet city of portland 2008 stormwater manual requirements for the entire. Determination of fiber length percentages in wood strand mulch. 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. Heather trim noted for the group that jan hasselman with earthjustice is concerned about the work the group is doing. Urban runoff from roads, parking facilities, sidewalks, buildings, rooftops, and other impervious surfaces can transport trash, debris, metals, hydrocarbons, and fecal matter that pollute receiving streams with pathogenic bacteria. Chapter 9 characterization of stormwater runoff from highways. Highway runoff manual transportation research board. The monitoring location for this study was md route 32, a fourlane limited access highway near savage, maryland, usa. Two swales were constructed in the highway median to receive runoff laterally from the southbound. However, the federal highway administration approved the project. Flow can still benefit with help of drivers by harmony weinberg with four weekends of ramp metering from mercer street to interstate 5 in the books, we have seen the system prove itself as an effective tool to help manage freeway traffic. Trbs national cooperative highway research program nchrp report 802. The roadside manual links partners working on wsdot roadsides.
Thistest method covers the determinationof the percentage, by mass, of fiber strands ina wood strand mulch sample meeting the specified requirements. 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. Chapter 3 pollutant types and effects on receiving waters. United states department of the interior fish and wildlife service washington fish and wildlife office 510 desmond dr. Highway runoff manual washington state department of. It is ironic, though, that despite the vast number of measures taken and resources invested to minimize its impact on receiving waters, highway stormwater runoff is still one of the most misunderstood and misrepresented contributors.
This manual has been prepared to provide washington state department of transportation wsdot bridge design engineers with a guide to the design criteria, analysis methods, and detailing procedures for the preparation of highway bridge and structure construction plans, specifications, and estimates. The highway runoff manual hrm is an integral part of the wsdot npdes municipal stormwater permit permit. Planting date and yield benefits from conservation agriculture. Wsdot traffic analysis different levels of analysis. Modeling of highway stormwater runoff sciencedirect. 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. Authoritys style and branding guide, the chicago manual. Publications standard specifications for road, bridge.
This manual should be used in conjunction with the wsdot highway runoff manual and the wsdot design manual, specifically section 1210. Highway runoff manual wsdot pdf free online publishing. Two passing lanes were added near colfax last summer and four more between. An effort was required to implement these results in the departments procedures. Pass east project final eis and section 4f evaluation, wsdot, 2008. 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 department of ecology reissued the permit, on april 5, 2019. The highway runoff manual shall be consistent with ecologys stormwater management manual and shall be adopted by.
The united states environmental protection agency us epa developed the nationwide urban runoff program nurp to expand the state of knowledge of urban runoff pollution by instituting data collection and applied research projects in selected urban areas throughout the united states driscoll et al. Hydrographic toxicity evaluation of highway stormwater runoff. Wsdot drb practices and experiences aashto soc summer 2008. Sep 01, 2019 the standard specifications have been developed to serve as a baseline for the work that is delivered to the public by the washington state department of transportation. This information is provided for reference purposes only. Research effects of seattle area highway stormwater runoff. Controlling nonpoint source runoff pollution from roads. The highway runoff manual hrm provides guidance to direct the planning and design of stormwater management facilities for existing and. Section 35 of the 2019 hrm includes two pathways for wsdot address adjustments and deviations to the minimum requirements. The hydraulics manual provides detailed information on hydrologic and hydraulic analysis related to highway design.
Hydraulic performance of grass swales for managing highway runoff. Views of risk and highway transportation of hazardous materials a case study in gasoline, ward 39. Appendix 4d infiltration testing and design wsdot highway runoff manual m 3116. 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. Wsdot washington state department of transportation. Read volume reduction of highway runoff in urban areas.
The washington state department of transportation wsdotuniversity of washington highway runoff water quality research project, conducted from 1977 to 1982, produced a number of results of potential use to wsdot. Characterization of highway runoff in washington state, ward 39. Publications pavements federal highway administration. October 20, 2009 sent information to warm springs shovel testing methodology. Highway runoff is generally cleaner than runoff from buildings, farms, mines, harbors or other nonpoint sources. Detail summaries of sites and events are shown in table 1, which includes site area, date, average daily traffic adt, antecedent dry days, rainfall, storm duration, and total volume of runoff. The lpa was identified in 2008 by the metro council after the. This guidelines manual is intended to provide the highway engineer andor agency responsible for preparation of environmental assessments with the necessary procedures to evaluate potential impacts from stormwater runoff from operating highways. He has sent her some detailed concerns that she will be sharing with ecology. Model validation and statistical analysis, ward 39. Wsdot maintenance staff responsible for developing roadside management plans and roadway maintenance practices. Nchrp report 565 evaluation of best management practices. Thisstandard may involve hazardous materials, operations, and equipment.
Hydraulics highway runoff manual additional guidance. The mission of the department of ecology is to protect, preserve, and enhance washingtons environment. Department of transportation federal highway administration and the massachusetts department of transportation, conducted a field study from september 2005 through september 2007 to characterize the quality of highway runoff for a wide range of constituents. Effects of seattle area highway stormwater runoff on. The us 195 passing lane project was paid for in the legislatures connecting washington funding package to alleviate the potential for headon collisions along the highway. Guidelines for applying traffic microsimulation modeling software june 2004. Table 3 shows the results of the model testing for maize phenology and yield.
The report outlines a fivestep process for the identification, evaluation, and design of solutions for runoff volume reduction based on sitespecific conditions. Final documents must be posted to the authority website test page as early. Two common swale design alternatives, pretreatment grass filter strips and vegetated check dams, were compared during 52 storm events over 4. However, the wsdot program was included in wsdots stormwater permit and its ecologyapproved. Beltsville, md research sponsored by the american association of state highway and transportation officials. Guidance manual explores practices for the reduction of stormwater volumes in urban highway environments.
Year 3 runoff water quality, august 1979 august 1980, ward 39. Characteristics of highway stormwater runoff request pdf. National cooperative highway research program nchrp report 565 subject areas planning and administration energy and environment bridges, other structures, and hydraulics and hydrology evaluation of best management practices for highway runoff control oregon state university corvallis, or geosyntec consultants portland, or boston, ma. Quality of stormwater runoff discharged from massachusetts. For example, at a given location the concentration of total suspended solids tss in highway stormwater runoff can vary from 40 to 1200 mgl within one runoff event, and from an event mean concentration of 8 mgll to an event mean concentrations of 810 mgil between events. The hydraulic performance of grass swales as a highway stormwater control measure was evaluated in a fieldscale study adjacent to a maryland highway. The highway runoff manual represents years of extensive research, collaboration, and negotiation by an interdisciplinary technical team of water quality.
Prompt identification and isolation of potentially infectious individuals is a critical step in protecting workers. An implementing agreement with the washington state department of ecology ecology commits wsdot to. Jul 01, 2003 the roadside manual supplements the roadside policy manual rpm by explaining how to implement the policies found in the rpm. The land adjacent to the sampling area is wooded with nearby residential development. S forest service mount bakersnoqualmie, olympic, giffordpinchot.
To help us meet that goal, please consider the environment before you print or request a copy. Wsdot environmental procedures manual epm, section 447. This focus sheet provides information about changes in the proposed wsdot 2014 stormwater permit. 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.