Washtenaw Industrial Facility LLC (former Universal Die Cast), Saline, Washtenaw County

Interactive Map Graphic for Washtenaw Industrial Facility PFAS SiteUpdated: October 8, 2019

Background

Washtenaw Industrial Facility LLC (formerly Universal Die Cast) is located at 232 and 290 Monroe Street in Saline. This site has a history of plating operations. Due to this history, both Washtenaw Industrial Facility LLC (WIFL) and the Michigan Department of Environment, Great Lakes, and Energy (EGLE) have collected groundwater samples from the northern part of this site.

Recent Accomplishments

  • On July 24, 2019, WIFL’s consultant provided EGLE and the USEPA a workplan to investigate the intermediate aquifer onsite.
  • On August 23, 2019, the facility provided a workplan for the installation of new shallow wells on the property south of the river and an abandonment plan for the original wells on the same property.

Next Steps

  • EGLE and USEPA will review the revisions to the workplan to investigate the intermediate aqufier to determine the extent of PFAS on-site and determine what options are available for managing the groundwater, as needed.
  • EGLE will work with the USEPA to review the well installation and abandonment workplan for the property south of the river.

Residential Well Testing/Alternate Water Information

Upcoming Community Engagement

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

Type of Sample

Date Sampled

# of Samples

# of Results Received

# of Non-detects

# Between Non-detect and standard*

# > Standard

GroundwaterŦ

Sep 18, 2018 - Jun 2019 30 30 1 5 24
Residential Drinking Wells Mar 14 - Mar 19, 2019 8 8 8 0 0

Cumulative

  38 38 9 5 24

*Groundwater results are compared to EGLE Part 201 Criteria of 70 ppt PFOS+PFOA.
*Residential well results are compared to the USEPA Lifetime Health Advisory Level of 70 ppt PFOS+PFOA.

 

Sampling notes

  • ŦThe groundwater results in the table above represent 30 unique groundwater wells north and south of the Saline River; the wells north of the river are sampled quarterly.
  • Non-detect means that the lab did not detect or find PFAS in the water sample at or above the reporting limit.
  • Other PFAS analytes were detected in samples. There are no federal or state standards for these analytes.

Washtenaw Industrial Facility LLC (former Universal Die Cast) Historical Timeline

The Washtenaw Industrial Facility LLC (formerly Universal Die Cast) site is located at 232 and 290 Monroe Street in Saline. When Universal Die Cast operated on the property, it was a plater of die cast parts. All buildings and associated infrastructure were removed in 2015. This site previously had nickel samples that exceeded surface water quality standards. The site property extends both north and south of the Saline River. The southern portion of the site across the Saline River contained a pre-regulation surface impoundment for plating sludges, which was used in the 1970s.  The material in the impoundment on the south side of the river was removed in the late 1990s.

Recently, Washtenaw County identified potential drinking water receptors adjacent to the site, near the PFAS impacted water. While groundwater from the site discharges directly to the Saline River, it is unclear if the underlying clay layer provides aEGLEuate protection for the drinking water receptors. The other primary receptor is the Saline River.

  • On September 18, 2018, the Michigan Department of Environment, Great Lakes, and Energy (EGLE) and Washtenaw Industrial Facility each took groundwater samples from 3 monitoring wells on the northern part of the site near the Saline River. The wells were chosen based upon prior detections of chromium.
  • On October 9, 2018, EGLE received the validated data from the samples they took. The highest results were 3,090 ppt PFOS+PFOA, with 3,380 ppt Total PFAS.
  • On February 8, 2019, following the USEPA’s shutdown, EGLE, USEPA, WIFL, WIFL’s counsel, and WIFL’s environmental consultant had a conference call to discuss further steps.WIFL will incorporate PFAS sampling in their next groundwater monitoring event.This event should take place by the end of March 2019.
  • On March 1, 2019, the EGLE finalized a FAQ about the Washtenaw Industrial Facility, with input from local partners.
  • On March 14 and 19, 2019, eight total residential wells were sampled.
  • On March 27, 2019, Wellogic data was updated for the five wells that had well logs provided to the State by the Washtenaw County Health Department.
  • On April 9, 2019, the Public Health Action Plan was finalized.
  • By close of business April 11, 2019, all analytical results from the residential well sampling had been received. PFOS and PFOA were not detected at any home. The highest Total Tested PFAS was 9 ppt.
    • The MDHHS and the local health department communicated the sample results to the residential well users by April 26.
  • On April 25, monitoring wells south of the river (290 Monroe St.) were sampled for PFAS and other site contaminants.
  • On May 7, 2019, WIFL's consultant has received results from on-site (232 Monroe St.) groundwater sampling and will be provided the results on the same day.
  • On May 30, 2019, WIFL’s consultant provided the facility’s PFAS results for the April 25, 2019 290 Monroe St sampling.
  • On July 24,2019, EGLE provided comments to the USEPA on the work plan to investigate the intermediate aquifer. The consultant is revising the workplan based on comments provided by EGLE and EPA.
  • On July 25th, the facility provided their analytical results from the June sampling event.The interactive map has been updated to reflect the results.