Campbell Environmental Group will typically review data readily available in regulatory and municipal files, review previous investigation reports, and conduct interviews as part of an initial investigation. This background data review will assist with the decision of whether additional investigation is warranted.
CEG is experienced with a wide range of investigative methods and tools that are suitable for varying levels of complexity in site conditions and project objectives. Methods and tools may include:
- Installing and sampling monitoring wells and or utilizing existing wells;
- Testing environmental media in the field using portable analytical equipment;
- Evaluating aquifer characteristics through recovery and pumping tests; and
- Supervising geophysical surveys to identify potential migration pathways and identify potentially buried contaminant sources such as underground storage tanks or drums
The end result of a site investigation is the development of a conceptual site model that consists of a three-dimensional understanding of contaminant sources, sensitive receptors, and contaminant fate and transport mechanisms. Through this understanding of the site, an evaluation can be made regarding current and future risks to human health and the environment.
A feasibility study evaluates the ability of select remedial alternatives to control human health and environmental risk posed by contamination. The selected alternatives are analyzed on the basis of the following five criteria:
- Overall protection of human health and the environment
- Long-term effectiveness and permanence
- Reduction of toxicity, mobility, or volume through treatment
- Short-term effectiveness