Village of Old Field Conscience Bay Stormwater Treatment and Wetlands Enhancement Project

Conscience Bay is located on the north shore of Long Island abutting the Incorporated Villages of Old Field and Poquott. The Bay was classified as a “Total Maximum Daily Load (TMDL) Impaired Waterbody” by the New York State Department of Environmental Conservation (NYSDEC), pursuant to NYS Section 303(d). The goal of this project was to improve the water quality of Conscience Bay by reducing nutrient loading and treating stormwater prior to discharging into the Bay.

The Joint Venture team of Hayduk Engineering and GEI Consultants, Inc., P.C. worked together to provide grant assistance to the Village to help secure the funding and collectively completed all planning, engineering, construction administration, and monitoring tasks associated with this project. The Village was awarded a $60,000 design grant by the Long Island Sound Futures Fund (LISFF) and a $250,000 construction grant, the largest grant awarded by LISFF.

Hayduk Engineering completed a watershed analysis for the entire Village and identified four (4) critical locations where stormwater road runoff was inadvertently being discharged directly into Conscience Bay during high tide and heavy rainfall events. These four (4) locations where selected to receive stormwater improvements as part of this project.

This innovative stormwater project included the design of new three-phase stormwater treatment systems in each of these critical areas. The systems included precast concrete leaching pools, galleries of PVC infiltration basins, and vegetated bioswales. The project also included water quality monitoring, ecological studies, and invasive species management services which were provided by GEI Consultants. The HE/GEI Team was responsible for coordination with the funding agency, submittal of grant applications, engineering and environmental design and permitting, preparation of bidding documents and technical specifications, soliciting, reviewing and analyzing bids from contractors, engineering during construction and full time construction inspection services, and final closeout of the project.