Hazardous Waste Services, Newton Centre, MA

Newton Centre soil gas plot dueling dry cleanersHazardous 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.

Massachusetts Contingency Plan (MCP) Assessment, Franklin, MA

Massachusetts Contingency Plan (MCP) Assessment, Franklin, MA

Tata & Howard performed a Massachusetts Contingency Plan (MCP) Assessment in Franklin, Massachusetts. The assessment included passive soil gas sampling at the Site and abutting properties to identify possible sources of chlorinated volatile organic compounds and further evaluate the approximate horizontal extent of these compounds. We then evaluated the laboratory data to identify potential additional source areas and estimated the extent of contaminants detected by the passive soil gas samples. In addition, we created plume maps for each of the contaminants that were detected, and provided a summary and opinion letter with recommendations.

Environmental Remediation, Quincy, MA

WORK Inc., Environmental Remediation Services, Quincy, MA

WORKInc_demo_beforeWORK Inc. provides onsite training and employment for disabled individuals, most of whom have significant developmental or cognitive disabilities.  WORK Inc. is fully accredited by the Commission on Accreditation of Rehabilitation Facilities with its highest rating, and licensed by the MA Department of Developmental Services.  As a human services agency, WORK Inc. places a high premium on human health and safety.  It has a health and safety committee, with external members including an insurance risk manager, to ensure that the agency is engaging in safe practices with minimal, if any, risks to human health and the environment.

In 2008, WORK Inc. decided to relocate from 3 Arlington Street in Quincy, Massachusetts to Dorchester, Massachusetts because the buildings at the Quincy site were in extremely poor condition.  When a due diligence assessment was performed at the Quincy site, several contaminants, including chlorinated volatile organic compounds (CVOCs), arsenic, cadmium, lead, and nickel were detected in soil and groundwater.  The sources of these compounds were found to be a former foundry, machine shop, and plating facility that were located at the site well before WORK Inc. took ownership.  Because they did not cause the contamination, WORK Inc. was eligible for a Brownfields Grant from the USEPA to pay for the cleanup.  T&H assisted with the preparation of the grant application and a remedial grant of $200,000 was received by WORK Inc. – the first eligible party in the entire City of Quincy to receive such funds.

In November 2009, WORK Inc. moved to the Dorchester facility and the Quincy facility was razed in spring 2011 to allow for redevelopment and to give better access to the contaminated soil and groundwater.  The demolition project was coordinated by T&H, who provided field observation and coordination services.

Approximately 800 cubic yards of metals contaminated soil were excavated and disposed offsite.  During the excavation, T&H collected soil samples from the sidewalls and bottoms of the excavations for screening with a portable x-ray fluorescence (XRF) analyzer.  Soil samples from the periphery of the excavation were then sent for confirmatory analyses at a laboratory to verify that significant concentrations of metals do not remain in soil at the site.

To address the CVOCs, T&H coordinated the drilling of four membrane interface probes (MIPs) to gather continuous CVOC data that were used to further define the vertical and horizontal extent of contamination and soil stratification.  These data indicate that the highest response to CVOCs was an approximate ten foot zone of soil located just above the bedrock.  Based on the MIPs data, T&H observed the installation of deep groundwater monitoring wells that were constructed with short screen sections set on top of the bedrock.  T&H is currently implementing a pilot test to evaluate the effectiveness of enhanced bioremediation for the remediation of the CVOCs in groundwater.

Site Assessment and UST Removal, Boston, MA

Site Assessment and UST Removal, Boston, MA

FoodPak_USTremoval2Tata & Howard provided site assessment and underground storage tank (UST) removal services for a private client. The Site is a former commercial manufacturing and warehouse facility located in an industrial area of Boston, MA. It is occupied by a single story, 76,000 square foot commercial warehouse food market and commercial restaurant wholesaler. Initial assessment by a prior consultant identified petroleum related compounds and styrene in indoor air, the source of which was, according to them, a UST located outside the building. Tata & Howard was called in to give a second opinion and was given a very short time frame because the client would lose their $4,000,000 deposit if they did not buy the property within three weeks. Their bank told them that no other consultant could meet their deadline but the borrower’s attorney recommended they contact Tata & Howard.

We first identified that styrene is not associated with petroleum. Therefore, there had to be another source of this compound. We immediately went to the site and saw that much of the food is wrapped in plastic, and numerous plastic plates and utensils are stored there as well. This appeared to be the more likely source of the styrene as well as the petroleum in the indoor air. To test this hypothesis, we drilled several holes through the concrete slab to test the sub slab soil gas. First, we found that the slab was almost three feet thick, lending further credibility to the theory that the contaminants in the air were not from beneath the slab; the concrete was too thick to allow any vapors through. Further site testing including sub slab soil gas analyses, which had no styrene and very little petroleum present, confirmed this theory.

Based on the findings of the assessment activities, the results indicate that a level of No Significant Risk exists for presence of these compounds at the disposal site. These findings, along with the additional information presented, support the applicability of a Class B-2 RAO to the disposal site. Remedial action was not necessary to achieve a condition of No Significant Risk and the client did not lose their $4,000,000 deposit.

UST Removal, Marlborough, MA

Underground Storage Tank (UST) Removal, Marlborough, MA

MarlboroughMA_UST removalTata & Howard coordinated a UST removal in Marlborough, Massachusetts. The results of subsequent soil testing indicate the presence of petroleum hydrocarbons (PHCs) in soil at concentrations above the applicable RCS-1 reportable concentrations. A Limited Removal Action (LRA) was performed to address the PHC-contaminated soil. These activities were conducted in accordance with Massachusetts General Law (M.G.L.) c. 21E, the Massachusetts Contingency Plan (MCP, 310 CMR 40.0000), and the Underground Storage Tank Regulations (310 CMR 80.00). Complications at this site included the presence of utilities over the UST and the close proximity of a sidewalk and road as can be seen from the photograph. Once the utilities were confirmed to be abandoned, T&H monitored the condition of the sidewalk and driveway in an effort to ensure that they were not damaged.

On-Call Water Engineering Services, Franklin, NH

On-Call Water Engineering Services, Franklin, NH

FranklinNH_water treatment facilityTata & Howard has been assisting the City of Franklin, New Hampshire with general water engineering services since 2009. The Tata & Howard team has managed several phases of work, including the design and construction of the water treatment plant and distribution system improvements.

The first phase was the design and construction of 2,500 linear feet of water main on Hill Road to connect a new water treatment plant to the City’s distribution system.  This project also involved use of four bioretention systems to treat and manage stormwater from the roadway, and was constructed in 2010.

The second phase of our work with the City included the design and construction of two parallel 2,500 LF sections of 12-inch diameter HDPE crossings beneath the Pemigewasset River using horizontal directional drilling to transport water from the City’s Franklin Falls Well to the water treatment plant site.

Tata & Howard managed the survey and geophysical studies and prepared a Preliminary Design Report and Environmental Review documents for several phases of work.  The City’s wells are surrounded by lands controlled by the US Army Corps of Engineers, which required that we complete an extensive permitting process to secure permissions for the final design of the project.

Tata & Howard completed design, construction, permitting, and funding applications for a 1,000 gallons per minute groundwater treatment plant to remove iron and manganese from three of the City’s wells. The plant has four pressure filters containing Greensand Plus media and using sodium hypochlorite for oxidation and sodium carbonate (soda ash) for pH adjustment. This plant went online July 9, 2012.

Tata & Howard provided design services for the construction of a new prestressed concrete tank at the site of an existing tank. The existing tank was in poor condition and due to the site characteristics, it was determined that construction of the new tank on the existing foundation of the old tank would be the best option.  A second tank on the site was demolished in 2013 and a new prestressed concrete tank will be constructed in its place.

Tata & Howard also conducted a full water system analysis for the City of Franklin, New Hampshire by utilizing our proprietary Capital Efficiency Plan™ methodology.  Our CEP involved creating a model of all water infrastructure in the City including sources, pump stations, treatment facilities, storage facilities, transmission, and distribution lines. Using our GIS modeling software, the system was calibrated based on fire flows in an attempt to accurately replicate the existing system. We then pinpointed deficiencies within the system based on a custom rating scale given to multiple criteria such as age, break history, material type, criticality and size. Recommendations were made for improvements in order of need. The study renewed both above ground and below ground assets. Funding for this study was in part from an Asset Management Planning Grant from NHDES.