Shore Road Wastewater Treatment Plant Improvements

Client: Town of Cornwall, NY

MHE Engineering provided design, permitting, bid administration, construction administration and observation services to the Town of Cornwall for the renovations and upgrades to the Shore Road WWTP. The plant has a design capacity of 1.5 million gallons per day (MGD). The facility SPDES Permit was modified to include effluent total residual chlorine (TRC) and dissolved oxygen. To comply with these new limits, the chlorine feed system was upgraded, a new sodium bisulfate chemical feed system was added, as well as a post-aeration tank with fine bubble diffusers.

The facility experienced significant damage during Hurricane Irene in 2011. To incorporate the post-aeration tank into the plant hydraulic profile and to provide flood resiliency, the secondary settling tanks and trickling filters were reconstructed and their elevations raised. The trickling filter rock media was replaced with random plastic media to increase surface area and improve treatment efficiency.

The project was financed through the New York State Environmental Facilities Corporation.