Risk Assessments/Regulatory Closure Evaluations

CEA has conducted human health risk assessments at over 100 disposal sites located throughout the Commonwealth including gasoline services stations, commercial/industrial properties, private residences, condominium complexes, public buildings and a former rifle and skeet shooting range. Projects sites have included oil and/or hazardous material (OHM) impacts consisting of gasoline or fuel oil, chlorinated solvents, heavy metals, PCBs and/or dioxin. Impacted media have included soils, surface water, sediment, groundwater and indoor air. The goals of the risk assessment are to determine whether a Site is suitable for regulatory closure without the need for land use restrictions and/or whether remediation is needed to prevent exposure to site contamination. Related risk assessment activities include:

  • Method 1, 2 or 3 Risk Assessments/Regulatory Closure Evaluations
  • Stage I Ecological Risk Screenings
  • Development of Risk-Based Cleanup Goals

CEA often utilizes a quantitative risk assessment approach to develop streamlined remediation plans which focus exclusively on the chemicals and media that actually pose risk at a Site which helps eliminate unnecessary costly cleanup.

CEA PROJECTS

Method 3 Risk Characterization, Conducted on behalf of an Institutional Property Investor (2010) Plastics Manufacturing Facility, Leominster, MA

CEA used a Method 3 Risk Characterization approach to demonstrate that this Site was suitable for regulatory closure with the implementation of an Activity and Use Limitation that restricted human contact with contaminated soils located at depths greater than 3 feet below grade.

Method 3 Risk Characterization, Conducted on behalf of an Institutional Property Investor (2012) Commercial Property, Salem, MA

CEA used a Method 3 Risk Characterization approach to demonstrate that this Site was suitable for regulatory closure with the implementation of an Activity and Use Limitation that restricted future use of the building for residential purposes or day care purposes.

Method 3 Risk Characterization, Conducted on behalf of a Residential Homeowner (2012) Residential Fuel Spill, Leominster, MA

CEA used a Method 3 Risk Characterization approach to demonstrate that the residual fuel-related impacts associated with a release of home heating oil did not pose an unacceptable level of health risk to the building occupants.

Method 3 Risk Characterization, Conducted on behalf of an Independent Petroleum Retailer (2012) Gasoline Service Station, Wareham, MA

CEA used a Method 3 Risk Characterization approach to demonstrate that this Site was suitable for regulatory closure with the implementation of an Activity and Use Limitation that placed restrictions on current and future uses of the building.