Hazardous Waste Services, Newton Centre, MA

Tata & Howard has completed a variety of hazardous waste services for a private client in Newton Centre, MA. Work included completion of the Immediate Response Action (IRA) Completion Report and Response Action Outcome (RAO) as well as obtaining indoor air samples and submitting the results to the Department of Environmental Protection (DEP) every two years. Tata & Howard also prepared and submitted Post Class-C RAO Status Reports. This involves documenting the operational status of the sub-slab depressurization systems (SSDSs) and obtaining and analyzing groundwater from three key wells to evaluate whether conditions have changed. The Status Reports are required every six months.

In addition, Tata & Howard completed the installation of a telemetry system, preparation of an Activity and Use Limitation (AUL), preparation of a Permanent Solution with Conditions (PSC) report, annual inspection of the sub slab depressurization systems (SSDSs), and the replacement of a monitoring well cover. The work included updating the existing SSDSs in accordance with anticipated revisions to the MCP by adding an alarm system designed by Tata & Howard equipped with remote telemetry able to notify the the consultant, clients, tenants, and MassDEP in the event of a system failure. The work also included a metes and bounds land survey.

Tata & Howard also performed work to comply with the revised Massachusetts Contingency Plan (MCP) and developing the data necessary to support a Permanent Solution for the release of chlorinated solvents at the Site. The work included the installation of five additional soil gas monitoring points at the Site and the collection of the data. These points were required to collect additional soil gas data to evaluate whether vapor migration has been controlled. The samples were submitted for laboratory analyses. Also, Tata & Howard collected groundwater samples from seven key monitoring wells using low flow sampling. The groundwater from the wells were measured for pH, temperature, dissolved oxygen (DO), oxidation-reduction potential (ORP), specific conductance, and turbidity. This project is ongoing.