Grassed swale definition
Grassed swale means an earthen conveyance system which is broad and shallow with erosion resistant grasses and check dams, engineered to remove pollutants from stormwater runoff by filtration through grass and infiltration into the soil.
Grassed swale means an earthen conveyance system which is broad and shallow with
Grassed swale means an earthen conveyance system, which is broad and shallow with erosion resistant grasses and check dams, engineered to remove pollutants from stormwater runoff by filtration through grass and infiltration into the soil. “Hotspot” means an area where land use or activities generate highly contaminated runoff with concentrations of pollutants in excess of those typically found in stormwater.