Livingston County Landfill, Howell, Livingston County

Updated: November 19, 2021

Background

Livingston County Landfill MapLivingston County Landfill is a closed Type 2 municipal solid waste landfill, located on Barron Road, operated by the Livingston County Board of Public Works (LCBPW) from 1972 until its closure in 1989. In the late 1980s volatile organic compounds (VOCs) were detected in residential drinking water and traced back to the landfill. Several remedial investigations have been performed, resulting in regular groundwater monitoring consisting of a network of 33 monitor wells.  Due to historical groundwater contamination, EGLE requested Livingston County to sample select monitor wells for PFAS analysis in April 2019.  A sampling event was completed in May 2019 which discovered PFAS levels in one monitoring well (MW-4S) exceeded EGLE's Part 201 criteria that went into effect in August 2020. 

Groundwater flow in the vicinity of the contaminated well is to the northeast. There are no known surface water impacts at this time.

Recent Accomplishments
  • On August 23, 2021, EGLE received the results of a May 26, 2021, groundwater monitoring event from Livingston County. There was one shallow groundwater well with a PFAS exceedance; MW-4S. Results show that the plume is stable and has been largely delineated.
  • On November 18, 2021, EGLE received results from a November 5, 2021, residential well sampling event. No wells had results over drinking water criteria for PFAS.

Next Steps

  • EGLE will continue to evaluate the results of groundwater and residential well monitoring events.

Residential Well Testing/Alternate Water Information

  • 14 nearby residential wells are sampled annually by Livingston County. No result has exceeded the drinking water standards for PFAS compounds.
  • EGLE will coordinate with Michigan Department of Health and Human Services and local health departments regarding any additional residential well sampling.

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 Criteria*

Residential Wells October 31, 2019 - November 5, 2021 14 0
Groundwater May 23, 2019 - May 26, 2021 7 2

* Residential well and groundwater monitoring well results are compared to EGLE Part 201 criteria for 7 PFAS compounds:  PFOS (16 ppt), PFOA (8 ppt), PFNA (6 ppt), PFHxS (51 ppt), PFHxA (400,000 ppt), PFBS (420 ppt), and HFPO-DA (370 ppt).

Sampling notes

  • None at this time.

Historical Timeline

  • On April 9, 2019, EGLE sent a request to Livingston County Department of Public Works to have select monitor wells and landfill leachate sampled for PFAS analysis.
  • On May 23, 2019, Livingston County Landfill's consultant Tetra Tech, collected six groundwater samples from the requested monitor wells.
  • On June 10, 2019, EGLE received sampling results. PFAS levels in one monitoring well (MW-4S) were found to exceed Part 201 criteria that went into effect August 2020.  The concentration of PFOA was 9 ppt and non-detect for PFOS.
  • On October 31, 2019, Tetra Tech completed sampling of 14 residential wells for PFAS.
  • On November 27, 2019, EGLE received residential well test results. No results exceeded the drinking water standard for PFAS compounds.
  • On October 30, 2020, EGLE and MDHHS met with Livingston County officials to discuss a plan to resample select groundwater wells and residential wells for PFAS compounds during their planned November 2020 monitoring event. A plan to resample all wells, plus an additional well was agreed to.
  • On November 18, 2020, Tetra Tech sampled the seven monitor wells agreed to. Two of the monitor wells had PFAS over the drinking water standard.