This is the first time EPA has imposed national monitoring requirements and enforceable numeric limitations on construction site stormwater discharges.
U.S. Environmental Protection Agency issued a final rule to help reduce water
pollution from construction sites. The rule takes effect February 2010 and will
be phased in over four years. EPA hopes it will significantly improve the
quality of water nationwide.
Construction activities like clearing, excavating
and grading significantly disturb soil and sediment. If that soil is not
managed properly it can easily be washed off of the construction site during
storms and pollute nearby water bodies, EPA says.
rule requires construction site owners and operators that disturb one or more
acres to use best management practices to ensure the soil disturbed during
construction activity does not pollute nearby water bodies.
addition, owners and operators of sites that impact 10 or more acres of land at
one time will be required to monitor discharges and ensure they comply with
specific limits on discharges to minimize the impact on nearby water bodies.
This is the first time that EPA has imposed national monitoring requirements
and enforceable numeric limitations on construction site stormwater
According to EPA research, soil and sediment
runoff is one of the leading causes of water quality problems nationwide. Soil
runoff from construction has also reduced the depth of small streams, lakes and
reservoirs, leading to the need for dredging.
information can be found atwww.epa.gov/waterscience/guide/construction.
EPA Rule To Reduce Water Pollution From Construction Sites
November 23, 2009