Great Pond Water Treatment Plant

Partnership

Environmental Partners was built on the core philosophy that a strict focus on client service through partnership creates added value for our clients.

What's New

Partnership

Environmental Partners was built on the core philosophy that a strict focus on client service through partnership creates added value for our clients.

What's New

Great Pond Water Treatment Plant

Weymouth, Massachusetts

Overview


The Town of Weymouth, Massachusetts operates two conventional water filtration facilities.  Episodes of unacceptable water quality led Environmental Partners to complete a Comprehensive Performance Evaluation of the Arthur J. Bilodeau Water Treatment Plant (WTP) and a Facility Audit of the existing Great Pond WTP, the results of which indicated various performance limiting factors.  Environmental Partners then provided piloting, conceptual planning, final design, and construction oversight of a new state-of-the-art $35 million, 8.0 million gallon per day surface water treatment plant. The scope of work included extensive cold and warm water pilot scale testing of various treatment technologies including dissolved air flotation, membrane filtration, ozonation, and deep bed biologically active GAC filtration. Construction began in March, 2008 and is estimated to be complete by December, 2009.

Approach

The performance evaluation and facility audits identified various performance limiting factors, and recommended improvements and upgrades were proposed to enable these facilities to consistently produce high quality water meeting existing and proposed drinking water regulations.  Improvements were categorized into phases to assist in the financial planning and budgeting for implementing the improvements.  Throughout the study and planning phases Environmental Partners worked with Town officials, and subsequent recommendations led to the design and construction of improvements to the existing facilities and a new 8 million gallon per day WTP.

Immediately upon recognizing the need for a new plant, Environmental Partners worked with Town officials on an extensive site analysis and selection resulting in the location of the new facility adjacent to the existing Great Pond WTP.  We also assisted the Town in applying for and receiving a commitment for a $35,000,000 low interest State Revolving Fund loan.  Environmental Partners managed the loan and complete design level services, including architecture, water processing and engineering, geotechnical and civil site analysis, structural and MEP services.

The new treatment process, based on preliminary investigations conducted during pilot testing activities, includes connection to an existing upgraded raw water intake; conventional dissolved air floatation followed by ozone disinfection; accommodation of either granular activated carbon filtration or powdered activated, carbon/membrane filtration; and gaseous chlorine secondary disinfection.