Details:

Creators:
McFalls, Jett ; Rounce, David ; Yi, Young-Jae ; Cleveland, Ted ; Storey, Beverly ; ... More +
McFalls, Jett ; Rounce, David ; Yi, Young-Jae ; Cleveland, Ted ; Storey, Beverly ; Murphy, Holly ; Barrett, Michael ; Dalton, Desirae ; Lawler, Desmond ; Morse, Audra ; Eck, Brad ; Herrmann, George R. ; Less -
Corporate Creators:
Texas A&M Transportation Institute ;
Subject/TRT Terms:
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Coagulation
Construction Sites
Data Collection
Effluents
Erosion Control
Flocculating Agents
Performance Tests
Runoff
Sediments
Turbidity

Publication/ Report Number:
0-6638 ;
Resource Type:
Brief ;
Geographical Coverage:
Texas ;
Corporate Publisher:
Texas. Dept. of Transportation ;
Abstract:
During the last two decades, policy makers have increasingly recognized that water quality is adversely affected by sediment-laden stormwater discharge from construction sites. On December 1, 2009, the U.S. Environmental Protection Agency (EPA) published a rule in the Federal Register establishing non-numeric and, for the first time, numeric effluent limitation guidelines (ELGs). The numeric ELGs included a turbidity limit of 280 nephelometric turbidity units (NTUs) and sampling requirements for stormwater discharges from construction sites that disturb 20 or more acres of land at one time. EPA’s decision to regulate turbidity through a numeric standard was based on the agency’s conclusion that turbidity is an “indicator pollutant” for identifying other pollutants flowing from construction sites. Following litigation in April 2013, EPA proposed to withdraw the numeric ELG requirement, at least for the time being. However, some future numeric limits are anticipated in the near future.
Format:
PDF ;
Collection(s):
US Transportation Collection
Main Document Checksum:
[+]
urn:sha256:b0a3c396c965bdaac21452bff83891925bd8c66fa1bddf606b6026bf37731b0d
File Type:

Supporting Files

• No Additional Files

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