Plating Facility Closure

Former Superior Plating Superfund Site - Minneapolis, MN


In the 1950s, Superior Plating was the largest plating facility in the Midwest. The plating facility closed several years ago and the remaining property was left a Superfund site, originally due to VOC and metal contamination in the soil and groundwater. The plating facility and later developers were responsible for most costs associated with site cleanup; however, the MPCA hired Bay West to provide additional technical support and third-party oversight. We have performed a wide variety of environmental activities for the MPCA at this site.

Project Scope

  • Developed PFAS Groundwater Sampling Procedures
  • Conducted Groundwater Sampling for PFAS
  • Third-Party Contractor Oversight on behalf of Regulator
  • Remediation System Modifications and Flexibility for PFAS
  • Public Meeting Agenda and Presentation Development

Leachate Collection System

Bay West’s first involvement at the site was to provide emergency response activities associated with chromium-contaminated leachate in a nearby ditch. We cleaned up the material, evaluated the existing leachate collection system, and identified the design flaws in this temporary system. We designed system modifications to adequately capture contaminated leachate from the Site, then installed these modifications ourselves.

Site Development

Because the leachate was originally treated using equipment within the plating facility, a new system was necessary after the facility was demolished. During site development, Bay West worked with the developer and then designed and installed a permanent treatment system for the leachate. We also provided third-party oversight of various development activities on behalf of the MPCA.

Additional Investigation

Because the developer is not responsible for additional investigation or cleanup activities, Bay West began conducting groundwater monitoring of the site on behalf of the MPCA. PFAS compounds were commonly used in the plating industry as a fume suppressant, so we needed to begin investigating the solvent and metals groundwater plume area for PFAS. Our key field employees modified our sampling procedures originally developed for the Air Force to gain MPCA approval, then conducted groundwater sampling for PFAS using our dedicated Teflon-free sampling train, while wearing PFAS-free clothing. We submitted our samples to Pace Analytical. While PFAS does not yet carry a ch. NR 149 certification, Pace is a NR-149 certified laboratory.
PFAS was detected in the groundwater throughout the site vicinity. We are currently conducting groundwater monitoring of the site’s plume, which contains PFAS, solvents and metals.

Related Projects

Former Superior Plating Superfund Site

Bay West was hired by the MPCA to provide additional technical support and third-party oversight. We have performed a wide variety of environmental activities for the MPCA at this site.

Hurricanes Katrina and Rita

Bay West supported cleanup following the Hurricanes Katrina/Rita disasters in Texas/Louisiana by providing more than a dozen task force leaders/supervisors to serve as EPA representatives on cleanup crews during removal of hazardous waste/debris.

Solvent Plume, St. Louis Park, MN

Bay West was a subcontractor to Weston Solutions as an EPA Region 5 START contractor assisting with EPA activities in Minnesota.

Duluth Brownfield Inventory Assessment

The City of Duluth retained Bay West to complete Limited Area-Wide Brownfield Inventories (AWBIs) in three select areas of the St. Louis River Corridor. These consisted of the following (collectively, the Study Areas): Gary-New Duluth, the Western Port Area Neighborhood (WPAN), and Lincoln Park/Rice’s Point.

Engineering and Environmental Teaming

We frequently team with engineering firms, both locally and on a national scale, that provide services we do not self-perform and/or that provide additional resources to develop cost-competitive, value-based solutions for our customers

Urban Infill – Jay Street Gas Holder

The property known as the Jay Street Gas Holder is currently owned by the City of Duluth, which plans to redevelop the property for residential uses.

PFAS Remediation: Former DoD Facility

Former DoD Facility PFAS Central Treatment System

Military Munitions Response Program

Bay West provided on-call UXO Construction Support services to Army construction projects at Fort Lewis as part of the Army’s program to deconstruct, construct, and upgrade its facilities at Fort Lewis.

Twin Cities Army Ammunition Plant (TCAAP), Arden Hills, MN

Bay West and our key staff have played an integral role at TCAAP over that past 20 years as the investigation and remediation contractor on several of the most high-profile waste disposal sites on the property, the redevelopment consultant for a development firm, and the third-party consultant for Ramsey County, providing technical expertise and oversight of cleanup activities.

Seymour Johnson AFB, Goldsboro, NC

In support of the US Air Force’s Performance-Based Remediation initiative, Bay West developed and executed closure/exit strategies for 16 Environmental Restoration Program (ERP) sites under this fixed-price, performance-based contract.

Eglin AFB, Fort Walton Beach, FL

Bay West performs munitions investigation and removal actions at Eglin AFB, which has historically conducted munitions development, testing and training.

Pacific Air Force Sites (PACAF), AK

Bay West performed Supplemental CSE Phase I and Phase II Investigations at eight PACAF facilities in Alaska (total of 1,813 acres within 47 Munitions Response Areas [MRAs]).

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Jeff Gordon, CHMM

Jeff Gordon, CHMM

Waste Management

Jonna Spanier, PE

Jonna Spanier, PE

Environmental Engineer



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