Remediation System Evaluation, MacGillis and Gibbs Superfund Site

The site was a wood preserving facility that is no longer active. Key contaminants at the site includepentachlorophenol (PCP), chromium, and to a much lesser extent dioxin, arsenic, and polynuclear aromatic hydrocarbons (PAHs). Both light non-aqueous phase liquids (LNAPL) and dense nonaqueous phase liquids (DNAPL) represent continuing sources of dissolved PCP groundwater
contamination. The site is underlain by a sequence of glacial sands and tills. The uppermost unit is the New Brighton Formation, which consists of sand and clayey silt. The remediation system addresses the New Brighton aquifer.

You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more.

Remediation System Evaluation, MacGillis and Gibbs Superfund Site (PDF)(31 pp, 776 K, 2002, 542-R-02-008c)