2009-07-24_GENERAL DOCUMENTS - M2009076 (3)

Home Browse Search

BMP: SNOW REMOVAL 1. METHODS: Snow removal is essential for the safe and efficient operation of roads, parking areas and driveways. In rural areas and along highways, snow is usually plowed to the sides of roads and allowed to melt there. In more densely developed areas, particularly in commercial areas and parking lots, snow must be removed and transported by truck to separate storage areas. Because of the concentration of petroleum products (from oil and gasoline) and salt in snow on roads and parking areas, the runoff from stockpiled snow can have significant impacts on water quality. Suggested methods for minimizing these impacts are: ? Where conditions permit, plow snow to the center of roadways and parking areas prior to removal by truck. This reduces the clogging of storm drains and reduces damage to curbing and other structures. ? Create a snow storage area that prevents contaminated snowmelt from reaching stream channels and groundwater. The size of the area will be vary with the needs of the municipality, but in general should be of sufficient size to allow evaporation. The area should be lined and bermed to prevent runoff, and incorporate a settling pond if necessary. ? If snow storage area is located near a waterway it should be surrounded by a sand berm for the snowmelt to percolate through. ? Do not dump or plow snow into or adjacent to stream channels, storm drains or other drainage ways. ? Remove plowed snow as soon as possible following storm to minimize on-site runoff. 2. MATERIALS: Silt fence, berms, hay bales, riprap, see other BMP's. 3. MAINTENANCE: Storage area(s) should be checked annually, and any necessary repairs to liners, berms or settling ponds. Sand and other foreign materials should periodically be removed as needed. 4. TEMPORARY OR PERMANENT USE: Permanent installation recommended. 21