Riverbridge

Massachusetts

67,000

GDP Design Flow

mg/L TN

Acres of Open Space

Challenge

A family owned 112-acre parcel alongside the Assabet River received a smart-growth designation from the Town of Berlin. Most of the property will remain as open space, as development is allowed only within the property’s center, leaving 86 acres dedicated to open space, including trails and a community garden. The footprint of the wastewater treatment facility had to be small, and it would have to be aesthetically pleasing as it is located in close proximity to apartment buildings. The owners also developed five bedrock wells for an onsite water supply and needed a public water supply storage and booster pump station constructed.

Highlights

Onsite water withdrawal and groundwater recharge maintains local water balance
Small WWTP footprint contributes to maximizing open space
Avoided intermunicipal transfer of wastewater in a nutrient-limited watershed
Design-build-operate delivery minimizes owner’s risk exposure
2016 construction

The Solution

Summary

NSU provided the permitting support, design, construction and currently operates an approximately 67,000 gpd wastewater treatment plant, and constructed an approximately 66,000 gpd onsite water supply storage and booster pump station.

Solutions

The WWTP and Water Supply Storage and Booster pumping station construction was spread out over two years to be compatible with the owner’s site grading schedule. Building the WWTP in a single phase saved on construction cost of multiple phases.

The current development consists of a 204-unit apartment complex, a 105 room hotel, convenience store/gas station, liquor store, daycare center, and a cafe. All served by the decentralized water supply and wastewater treatment system