| EPA: United States
Environmental Protection Agency Links
Stormwater discharges are
generated by runoff from land and impervious areas such as paved
streets, parking lots, and building rooftops during rainfall and snow
events that often contain pollutants in quantities that could adversely
affect water quality. Most stormwater discharges are considered point
sources and require coverage by an NPDES permit. The primary method to
control stormwater discharges is through the use of best management
practices.
BMP Description
In-line quality devices are storm sewer insert type devices which
are used to catch sediments, filter, and absorb hydrocarbon products
from the storm water runoff in the catch basin manhole structure before
entering the storm sewer system.
Why is this BMP being
tested?
This Rouge pilot BMP was selected for demonstration in order to
evaluate a low cost storm inlet insert type devices in the Rouge
Watershed. This demonstration will provide information on the benefits
and costs of these devices, including operations and maintenance
requirements. The information from these devices will be used to
determine if existing design criteria should be modified and if existing
storm sewer inlet manholes should be retrofitted with these devices to
provide pollutant removals, and the estimated costs of these actions.
Water quantity and water quality benefits of a watershed-wide
application of this type of BMP will be estimated and included in the
final report.
These devices are not used
in the Rouge River Watershed. Unique designs of these devices were used
in the States of Florida and Washington. Applicability of these devices
in gas stations, small convenience stores and small parking lots in the
watershed are possible due to their low cost.
|
