Phase II Environmental Site Assessment of Plating Company

A client initially retained Carlson McCain to assist with negotiations with the Minnesota Pollution Control Agency (MPCA), including a Schedule of Compliance under the Minnesota Environmental Response and Liability Act (MERLA), also known as the state Superfund program. Under this program, Carlson McCain conducted an initial investigation to define the magnitude and extent of contamination, including metals and per- and poly-fluoroalkyl substances (PFAS), in soil, sediment, and groundwater. The owner implemented several response actions to reduce or eliminate the source(s) of contamination, and the site is currently being monitored to assess the effectiveness of these response actions.

Carlson McCain was retained to complete a Phase I Environmental Site Assessment (ESA) and was subsequently retained to conduct a Phase II Environmental Site Assessment (ESA) consisting of a site investigation to assess recognized environmental conditions (RECs) identified in the Phase I ESA. The client conducted the analysis to assess chromium, volatile organic compounds, and PFAS contamination at the property, including manufacturing, laboratory, and waste treatment facilities.

The Phase II Investigation activities included a subsurface investigation involving the collection of soil, groundwater, and soil vapor samples from both inside and outside of the facility for field screening and laboratory analysis. Indoor air sampling was also conducted at the property. Once the investigation was complete, Carlson McCain provided a detailed report describing investigation results, project scope of work, activity logs, and recommendations for the site. After the investigation, Carlson McCain designed and oversaw the construction of a sub-slab-depressurization system to manage subsurface vapors with a series of roof-mounted blowers, suctions pits, and retrofit PVC piping effectively.

*This work is client confidential. We have omitted companies and individuals involved in this project. *

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