Phase II environmental site assessments are primarily employed after evaluation of the Phase I audit results to acquire and measure contaminant levels at the site and to help define the cost and extent of possible future clean-up. Assessment may also be used as baseline studies to confirm contaminant background levels prior to construction or purchase of a facility.
The scope of work for any individual site assessment will be custom tailored for the site conditions, the future land uses and the agency concerns. The type of installation will be chosen based on probable types of chemicals and materials which may be of concern.
Clementi Environmental Consulting can complete the following types of Phase II environmental assessments:
Soil Contamination Assessment
Soil vapor studies provide a rapid and cost-effective method of mapping the horizontal distribution of volatile petroleum and chemical vapors in subsurface soils and waters. Soil vapor are used to explore petroleum refining, storage and distribution facilities and other installations which have used or stored fuels, solvents or other petroleum-based chemicals.
Soil vapor studies set up grids of sampling over the area of interest and analysis for methane through butane light hydrocarbons, C5+ gasoline range hydrocarbons, chlorinated solvents and other compounds of concern. Results can be used to select boring and monitor well locations, which may be necessary to map the vertical distribution of contaminants in soils and ground water.
Conventional drilling and soil sampling programs are employed to obtain representative soil samples for laboratory analysis of petroleum constituents, trace metals and other compounds of concern. Soil sampling programs are often planned after a soil vapor study or other screening tool is employed, so that borings are placed to fully define the horizontal extent of contaminants.
Groundwater Contamination Assessment
The horizontal extent of ground water contamination can be mapped with an appropriate number of ground water monitoring wells. Wells will be sampled for the chemical compounds/elements typical of the potential contaminants.
Contamination Assessment Report (CAR)
The final report or Contamination Assessment provides a comprehensive analysis of the type, composition, vertical and horizontal distribution of potential contaminants of soil and/or ground water of the site. The best result from the report would be that there is no contamination on the site and no further actions are needed. However, the results can define the need for more extensive site investigation if necessary to further define pollutants and the necessary actions to remove the contamination.
Clementi Environmental Consulting in association with Ken Jones, Professional Geologist (PG) of Hydro-Environmental Associates, can complete a site specific Contamination Assessment Plan and execute it.
