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Key II Industrial Building (Elk Rapids, Antrim County)

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Please contact the Site Lead for the most up-to-date status of this site.

EGLE site lead

Christiaan Bon, or 989-370-9624


Key II Industrial Building is located at 603 Bridge Street. From the 1950s to the 1980s, the site was used as a tool and die shop. Afterwards, it was an antique shop and retail facility until late 2020. Since then, it has operated as a watercraft sale and rental facility. EGLE reviewed a Baseline Environmental Assessment (BEA) on June 28, 2021 that was conducted for potential redevelopment of the property. Two temporary monitoring wells had concentrations of PFAS exceeding groundwater cleanup criteria (indicated by yellow highlights below). Monitoring well TW-6 exceeded groundwater cleanup criteria for PFOS and PFOA and groundwater surface water interface (GSI) criteria for PFOS. Monitoring well TMW-4 exceeded GSI criteria for PFOS.

Groundwater flow is to the east towards Elk Lake.

Content posted July 2021

Site map

See an aerial view of the location of the site.

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Drinking water

Municipal water is available. There are no shallow private wells downgradient from this site.

Anticipated activities


Historical timeline

  • Sampling Results


    TMW-6 (ppt)

    TMW-4 (ppt)

    PFOA 26 Non-Detect
    PFOS 160 13
    PFOS-LN 120 Non-Detect
    PFOS-BR 36 Non-Detect
    PFPeA 11 Non-Detect
    Other PFAS Non-Detect Non-Detect


    Groundwater monitoring well results are compared to EGLE Part 201 criteria for 7 PFAS compounds effective 12/21/2020:  PFOS (16 ppt), PFOA (8 ppt), PFNA (6 ppt), PFHxS (51 ppt), PFHxA (400,000 ppt), PFBS (420 ppt), and HFPO-DA (370 ppt). 
    Groundwater Surface Water Interface Criteria is compared to Rule 57 non-drinking water values of 12 ppt for PFOS and 12,000 ppt for PFOA.