Details:

Creators:
Stansbury, John ; Moussavi, Massoum ; Zhang, Tian
Stansbury, John ; Moussavi, Massoum ; Zhang, Tian Less -
Corporate Creators:
University of Nebraska--Lincoln. Dept. of Civil Engineering
Corporate Contributors:
Nebraska. Dept. of Roads
Subject/TRT Terms:
[+]
Best Practices Detention Basins Drainage Runoff Surface Drainage Wetlands
Publication/ Report Number:
SPR-1(09) P235
Resource Type:
Tech Report
Geographical Coverage:
Nebraska
Corporate Publisher:
Nebraska. Dept. of Roads
Abstract:
"Stormwater from roadways could have negative effects on the environment and aquatic ecosystems. Typical highway

runoff pollutants include solids; heavy metals, particularly cadmium, copper, and zinc; petroleum hydrocarbons; gasoline

constituents; PAHs (polyaromatic hydrocarbons); oxygen demanding compounds measured as COD (chemical oxygen

demand) and BOD (biochemical oxygen demand); and road salts. Roadway runoff falls under the legislation of the Clean

Water Act (CWA) via the National Pollutant Discharge Elimination System (NPDES). CWA regulates discharge of

nonpoint source pollutants, such as roadway runoff, by issuing permits to public entities which manage Municipal Separate

Storm Sewer Systems (MS4s). The objectives of volume I of this research were to characterize the pollutants in roadway

runoff and determine the effectiveness of the existing stormwater BMPs at the study site. To accomplish these objectives,

eleven rainfall events were sampled from November 2008 through November 2010. The objective of volume II was to

fulfill the NDOR permitting requirement of creating a design guide for BMPs to remediate roadway runoff in Nebraska.

BMPs which were most applicable to treating roadway runoff were those which removed 80% of the total solid load in the

runoff, reduced metal concentrations to below acute toxicity levels, had low maintenance burden, were cost effective, did

not pose a safety hazard to motorists, could be implemented within the right-of-way, did not negatively impact the road

subgrade, and were aesthetically pleasing. The BMPs which best fit these criteria were vegetated filter strips, vegetated

swales, bioretention, sand filters, and horizontal filter trenches. In this study fact sheets and design guides were compiled

for each of these BMPs. The fact sheet provides background on the BMP including cost considerations, siting constraints,

and predicted maintenance requirements. The design guide provides the process for sizing the BMP, design criteria the

BMP must meet, and a design example which goes through the design process for a hypothetical application."


Format:
PDF
Funding:
P325
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:c1a91a5ee7ddb4a5c1fabaaf95b15e36ad09ba1917030998ba8b9bae08de0711
Download URL:
https://rosap.ntl.bts.gov/view/dot/25285/dot_25285_DS1.pdf
File Type:

Supporting Files

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