Wastewater Facility Upgrades, Construction & Operations

Hamilton-Wenham Regional School District WWTF Upgrades and O&M

Weston & Sampson was awarded the Hamilton-Wenham Regional School District Wastewater Treatment Plant upgrades in 2004. The school was under an Administrative Consent Order (ACO) from the Department of Environmental Protection (DEP) to upgrade the plant.

The existing treatment plant was an Amphidrome system permitted to treat 40,000 gallons per day. The system was designed to meet the stringent BOD, TSS, and nitrogen effluent limits of the groundwater discharge permit. The treatment plant contains several components located in underground structures completely within the school parking lot. Coordination and strict adherence to construction plans were necessary to complete this project.

The upgrades included:

  • Installation of a new precast building to house air regenerative blowers and chemical feed storage
  • Installation of new recycle lines with pumps
  • Installation of steel blower lines from the new building to the appropriate tanks
  • Installation of new electrical conduit and wire
  • Pavement restoration of the parking lot

Scheduling of this project was critical, as all work had to be completed during the summer break. Weston & Sampson performed all work on time and within budget. In addition, we currently operate and maintain the treatment plant on a daily basis.

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