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| Best
Management Practices (BMPs)
New
Castle County and DelDOT operate and maintain public streets, roads,
and highways to minimize the discharge of pollutants. Stormwater
Best Management Practices or BMPs are practices that are used to
reduce pollutants typically present in stormwater runoff, prior
to the runoff entering streams and rivers. There are two types of
stormwater BMPs; Structural
BMPs and Non-Structural
BMPs. |
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DelDOT
has begun a long-term Best Management Practice (BMP) performance
monitoring and research program. This includes wet weather monitoring
of stormwater outfalls and BMPs, as well as chemical and biological
monitoring of streams that receive stormwater discharges from DelDOT
maintained BMP's. Long-term objectives of DelDOT’s BMP monitoring
program include the following: |
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Quantifying pollution removal abilities of BMPs
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Identifying types and amounts of pollutants present in stormwater
discharges from DelDOT maintained roads.
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Determining potential impact of stormwater discharges on water
quality
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Assuring compliance with regulatory standards
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Provide design engineers with additional treatment options for
difficult site-specific situations
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Evaluating emerging stormwater treatment technologies
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Determining unique problems, and solutions to problems, that occur with
structural BMP retrofits.
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Integrating DelDOT monitoring with watershed monitoring already
being done by the Delaware Department of Natural Resources and
Environmental Control (DNREC) and others—an integrated biological,
physical and chemical monitoring and assessment approach
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