Bristol Town Beach Supplemental Environmental Project (SEP)
Bristol, Rhode Island
BETA provided engineering design and construction management services for a Supplemental Environmental Project (SEP) for the Town Beach Drainage Improvements project. The SEP was part of the Consent Agreement and Final Order from the U.S. Environmental Protection Agency, and was proposed to improve water quality by installing a closed drainage system and incorporating Best Management Practices (BMP’s) to remove Total Suspended Solids (TSS), bacteria, and control discharges from stormwater runoff generated by the existing parking lot located at Bristol’s Town Beach.
The SEP was proposed to mitigate impacts associated with uncontrolled stormwater runoff from an approximately three acre paved parking lot. Stormwater runoff generated from the parking lot flowed over land directly to a shoreline feature consisting of a coastal beach and contiguous brackish/freshwater wetland. This area is a priority for the Town because of recent beach closings due to elevated levels of fecal bacteria found in the water.
BETA designed a closed drainage system with Abtech Smart Sponge Plus Ultra-Urban Filter catch basin inserts, which were installed to treat bacteria and other pollutants. The closed drainage system discharges to a rip-rap swale that converted into a grassed swale with check dams.
During the design phase of the project, BETA coordinated with the Town of Bristol, the Department of Environmental Management (RIDEM), the Rhode Island Department of Health (RIDOH) Beach Program, the Coastal Resources Management Council (CRMC), and the Environmental Protection Agency (EPA).