Brighton Township Dump, Brighton Township, Livingston County

Updated: August 3, 2020

Background

Brighton Township Dump MapBrighton Township Dump located on Corlett Drive is a historic dump that accepted wastes during the 1960s and into the early 1970s.  The dump was closed in 1973 without covering or removing wastes.  The U.S. Environmental Protection Agency (EPA) removed approximately 200 drums and 450 cubic yards of visibly contaminated soil from a ravine near the center of the facility.  In 1996, monitoring wells were installed using state funds.  In 2002, the State of Michigan removed highly contaminated soil bordering the south wetland.  In 2009, the State of Michigan and Brighton Township entered into a consent decree.  Brighton Township agreed to pay a portion of past costs incurred by the State of Michigan in exchange for conducting response activities at the dump that included methane monitoring, monitoring well groundwater sampling and annual sampling of residential wells near the dump for a 10-year period if performance objectives were met.  The consent decree did not provide for conducting response activities to address emerging contaminants such as PFAS.

Brighton Township agreed to extend the sampling period in 2019 to evaluate volatile organic compound contamination that was found to have entered an adjacent property.  On May 14, 2020, five monitoring wells were sampled by Brighton Township’s consultant for volatile organic compounds only.  EGLE staff collected groundwater samples for PFAS analysis. The sampled monitoring wells are near the wetlands and the residential well on the adjacent property.

There are nine residential wells surround the landfill, one residential well is near two monitoring wells where PFOA and PFOS were detected.  PFOS was detected below criteria in both the shallow and deep monitoring wells.

Ground water flows to the northwest, and seasonally, in the southeast corner of the landfill, flows to the east.

Recent Accomplishments

  • On May 14, 2020, EGLE staff collected groundwater samples for PFAS analysis from 5 monitoring wells located near the southeast corner of the facility.
  • On July 1, 2020, a final PFAS analytical report was issued to EGLE.  PFOA and PFOS were detected in the five monitoring wells EGLE sampled.  The highest concentration of PFOA was 26 ppt and the highest concentration of PFOS was 18 ppt, both of which exceed the Part 201 criteria.  The highest concentration of combined PFAS was 110.4 ppt.  A geologic review is in progress to determine which monitoring wells should be sampled for PFAS by EGLE as part of the next phase of the investigation.  
  • On July 21, 2020, the consultant for Brighton Township sent EGLE PFAS sampling results to a homeowner with a residential well near two monitoring wells where PFAS was detected.  Livingston County Health Department was informed of the PFAS results.

Next Steps

  • EGLE will complete a geologic review to determine which monitoring wells should be sampled to determine the monitoring wells to be sampled.
  • EGLE will request that Brighton Township collect a residential well sample from the residence closest to the monitoring wells where PFOA and PFOS were detected.
  • EGLE will collect groundwater and surface water samples at the facility when staff can schedule the work (before October 1, 2020) and evaluate results to determine if EGLE or Brighton Township should sample all or some of the nearby residential wells for PFAS.

Residential Well Testing/Alternate Water Information

  • Residential wells draw water from sand and gravel deposits and are deeper than the monitoring wells.  Clay layers identified in well logs may be protective of the aquifer where potable wells are set.  EGLE is working with local health department.

Upcoming Community Engagement

  • None scheduled at this time.
Sampling: PFOS and PFOA Only

Type of Sample

Date Sampled
(or range)

Number of Sample Results Received

Number of Samples Above PFOS Criteria

Number of Samples Above PFOA Criteria

Groundwater May 14, 2020 5 1 3
Cumulative   5 1 3

*Groundwater results are compared to EGLE Part 201 Criteria of PFOS 16 ppt and PFOA 8 ppt.

Sampling notes

  • None at this time.