Surface water quality is maintained by discharging only unpolluted waters such as rainwater and city domestic water, or water that is within regulatory water quality limits such as groundwater from dewatering operations, to the environment. Environmentally Harmful Materials . There are existing structural storm water controls at Jefferson Lab. They include items such as surface drainage channels, vegetated swales, and soil stabilization practices, such as mesh fabric on a portion of the end station berms. Temporary practices that could be utilized under the SWPP Program include installing straw bales and sediment control fences to prevent silt-laden storm water from leaving the immediate construction area.
Prevention is the key.
Provide secondary containment for all oils or chemicals stored outdoors, even temporarily. Avoid exposing to weathering any material or substance that could get into storm drainage systems. Keep exterior containers covered and sealed, and cover exposed potentially harmful metals. Do not disturb soil or ground cover vegetation without using sediment containment techniques. Assure that construction documents include adequate attention to erosion controls.