Phase II Environmental Site Assessments
Investigation
Once a potential for a release of chemicals to the soil or groundwater has been identified, sampling of subsurface media must be conducted to evaluate and quantitatively document if the property has been impacted. Objectives of Phase II investigations include:
- Determination of specific contaminants present at the Site.
- Identification or confirmation of the source of contaminants.
- Definition of the horizontal and vertical extent and concentrations of contaminants.
- Characterization of the hydrogeologic conditions of the Site.
- Collection of the physical data necessary to support the development of a remedial design for site cleanup.
The recommended sampling strategy and analytical program will depend on an understanding of the site specific soil and groundwater conditions and the nature of the potential contaminants. PPI conducts site investigations using a phased approach to minimize costs by including only those elements necessary to meet specifically defined objectives. A sampling plan could include collection of soil, soil gas, and/or groundwater samples.
An investigation conducted prior to property acquisition will have the objective of determining the presence or absence of chemical impacts to soil or groundwater. PPI personnel have decades of experience in conducting these evaluation and proposing efficient subsequent investigations to fully define the extent magnitude of impacts, together with the collection of site data relevant to decisions regarding future remedial options.
PPI personnel are experienced with implementing a wide variety of environmental sampling methodologies suitable for differing geologic conditions.
Remediation
PPI personnel are experienced in the development and analysis of remedial engineering alternatives and in the design and implementation of remedial actions for the cleanup of hazardous and nonhazardous materials and for proper site closure under CERCLA, RCRA, and State regulatory requirements. We have prepared feasibility studies and designed remedial mitigation activities for a wide variety of clients including U.S. governmental agencies, national oil companies, and industrial corporations. Sites included those impacted with petroleum hydrocarbons, volatile organic compounds, and metals.
In order to effectively remediate contaminants present in soil and groundwater, a knowledge and understanding of the remedial technologies available is needed. In addition, a critical component is the understanding of the subsurface conditions of the soil and groundwater site are necessary. PPI personnel are exceptionally experienced in understanding subsurface geologic conditions and the explicabilities of various environmental technologies in different conditions.
Feasibility studies to select the remedial approach include evaluation of the technical feasibility, regulatory requirements and cost effectiveness for the available remedial methods. The basis for selection of the remedial alternative is presented in a comparative analysis quantitatively ranking each remedial alternative against the evaluation criteria. The capital costs and operational costs of each alternative over time are evaluated to evaluate the costliness of each alternative.
