In 1999, 2001 and again in 2004, Campbell Environmental Group staff was awarded the Maine Department of Environmental Protection Site Closure Project. The project consisted of evaluating and assisting in the closure of petroleum sites. The objective of the project was to apply various closure criteria to the sites, verify the sites met the closure criteria, complete any additional field work, prepare standard closure documentation, and update the Maine DEP's database with the appropriate entries.
There are three criteria in Maine for determining when closure is appropriate for a petroleum site. These criteria are achieved when the limits of technology have been met which may mean the cost effectiveness of the solution is not practical or feasible, the human health risks have been eliminated, or the cleanup goals have been met. CEG's closure strategy focuses on one or more of these criteria.
The first step to evaluate the closure strategy is to ensure that the site has been properly categorized into one of the Maine Department of Environmental Protection's four cleanup criteria. The second step, if necessary, is to begin remedial efforts. CEG typically pilot tests remediation techniques on any site prior to full scale design, installation, or operation. Following the results of the pilot testing, CEG will evaluate the data generated to design an effective system or to evaluate other remedial techniques.