Former Industrial Property
Ms. Stiller investigated a vacant former manufacturing facility, within a thriving retail area, resulting in the discovery of chlorinated solvents and oil contamination in soil and ground water. The primary source of contamination to the environment was a dry well structure which had received industrial waste streams in the past. With the sale of the property already under agreement, a fast-track resolution of the environmental issues was required.
Ms. Stiller assisted the client in selecting a patented treatment alternative using hydrogen peroxide oxidation, which cost approximately one-quarter the amount of the more traditional methods proposed. The process involves a three-step injection of conditioning chemicals and hydrogen peroxide to destroy organic contaminants. The treatment process was completed within three days, and follow-up laboratory test results demonstrated that the cleanup goals had been achieved without the need for an Activity and Use Limitation. Site closure was filed.
Ms. Stiller was the LSP of Record for a mall expansion and utility upgrade project that would impact a majority of the 52-acre shopping mall in Burlington, Massachusetts. The presence of fill material containing petroleum, PAHs, and metals contamination resulted in a requirement to manage the excavated soils and pumped groundwater in accordance with a Release Abatement Measure (RAM) Plan filed with the Massachusetts DEP. The site is situated within a Zone II of a municipal drinking water supply.
Contaminated Soil and Groundwater Management During Construction
In addition to State approvals, Ms. Stiller prepared required environmental filings with the Town of Burlington including a dewatering plan and environmental conditions reports as required by the town. Ms. Stiller attended Board of Health and Conservation Commission meetings to assist in gaining approvals necessary to conduct the expansion project.
The project's soil management plan, developed by Ms. Stiller, was designed minimize environmental costs to the owner/developer by re-using as much of the contaminated soil on-site as feasible for backfill. During earthwork, a field representatives tracked stockpiles, field screened soil to document consistency with the original characterization, conducted fence line dust monitoring to address potential owner liability claims from abutting residential property owners, confirmed structural bearing materials and backfill compaction, among other duties. A Response Action Outcome (RAO) submittal to close out the site was subsequently filed with DEP.
Municipal School Property
Petroleum contamination was identified in soil during removal of building foundations as part of the demolition of a prior elementary school building. The contamination, consisting of weathered gasoline, was found where historic Sanborn Maps showed that a former underground gasoline tank existed when the property was used as an automotive repair facility in the 1920s and 1930s. A new building was being developed over the footprint of the former building. Gasoline constituent compounds were identified above their respective MCP RCS-1 Reportable Concentrations, and the Site was reported to the DEP with the filing of a Release Notification Form (RNF) and RAM Plan to address the contamination.
The RAM Plan involved excavation of the soil for off-site recycling or disposal, and described the methods for managing the Site in accordance with the MCP and DEP Policy #WSC-000425 Construction of Buildings in Contaminated Areas. The RAM Plan also provided for the potential management of affected groundwater if encountered during the soil excavation or during future construction dewatering at the property.
Implementation of subsurface assessment and soil excavation activities required ongoing, direct communications between the LSP, municipal officials, and the project architectural firm to complete necessary environmental response actions without significant delays in site construction. The remediation was expeditiously completed, and site closure was filed for the release.
#2 Fuel Oil Release
LSP of record for a #2 fuel oil release site in an historically industrial, research and development area of Cambridge, Massachusetts. Filed DEP Access Assistance Request and worked closely with DEP and abutter's consultants and attorney to gain access to abutting property to define extent of free phase oil plume. Site closure was filed.
Research & Development Facility
LSP of Record
LSP of Record for several PCB soil contaminated sites. Conducted site characterizations and cleanups for technology sector and retail clients. Closure paperwork filed.
Assessment and Cleanup of PCB Sites in Massachusetts
Assessment, Cleanup, Site Closure
Also coordinated pre-demolition hazardous building materials surveys, budgeted and assisted in bidding process for hazardous materials abatements including asbestos, lead-based paint, mercury and PCBs.