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Former Anderson Landfill (Northville, Oakland County)
Please contact the Site Lead for the most up-to-date status of this site.
EGLE site lead
Ira Adolphues, AdolphuesI@Michigan.gov or 586-295-6682
Background
In early 2023, EGLE received a Baseline Environmental Assessment (BEA) that was conducted on property east and adjacent to the former Anderson Landfill located at 50250 Eight Mile Road. Groundwater analytical results for the PFAS compounds PFOA and PFOS exceeded drinking water and groundwater criteria. The BEA identified the landfill as a potential source of contamination.
On June 24, 2024, EGLE sampled groundwater at six monitoring wells for PFAS from the landfill property. The highest groundwater results were 110 ppt PFOA (compared to 8 ppt) and 510 ppt PFOS (compared to 16 ppt). An on-site groundwater flow study has not occurred. Based on the topography, groundwater flow is to the southeast direction.
Content posted September 2024.
Map
See an aerial view of the entire site.
Drinking water information
From 2021 through 2023, under a separate investigation, nearby residential wells and public drinking water wells were sampled for PFAS in the vicinity of the former Anderson Landfill due to two dewatering projects on Eight Mile Road and Nine Mile Road that staff were concerned could change groundwater flow and impact nearby drinking water wells. Drinking water wells were sampled for volatile organic compounds (VOCs) and PFAS, and the results were non-detect.
In 2022, public drinking water wells at ITC Park, Maybury State Park, and Little Seeds Northville Day Care were sampled for PFAS. Results were non-detect, excluding a drinking water well at Oak Trail in Maybury State Park. The Oak Trail well had detections of PFOA at 6 ppt and 8 ppt (compared to 8 ppt), and the detections were determined to be unrelated to the landfill. The DNR has taken the well out of service.
To the east of the Anderson Landfill is an area slated to become a new subdivision. In September through October of 2023, the developer, Parc Vista installed a dewatering system to lower the water table to facilitate the construction and connection of a sanitary sewer system to the main sanitary line located in the Eight Mile Road right-of-way (ROW). During dewatering activities, four monitoring wells were installed in the Eight Mile Road ROW for sampling purposes and to measure groundwater elevations. These monitoring wells and the dewatering discharge location along Eight Mile Road were sampled weekly for PFAS. Analytical results indicated that PFAS results were non-detect for all samples in all locations. Parc Vista will restrict groundwater usage due to the PFAS detections from the former landfill. Drinking water will be supplied by Great Lakes Water Authority (GLWA).
The property west of the former landfill, Former Holloway Sand & Gravel, was purchased by the City of Novi in early 2024. The City submitted a BEA, but no additional PFAS sampling was conducted by the City.
EGLE conducted groundwater sampling in the summer of 2024 and will conduct additional sampling in the fall 2024.
Anticipated activities
EGLE will be sampling at the Former Holloway Sand & Gravel in the fall 2024 to determine if PFAS from the landfill is migrating off-site to the west.