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Petro-Chem Processing Group of Nortru, LLC (Petro-Chem) (Detroit, Wayne County)

EGLE Site Lead: Nathan Erber, ErberN@Michigan.gov or 517-256-3063. Webpage last updated: July 28, 2020.

Background

Petro-Chem is located at 421 Lycaste Street, on about 8.5 acres of industrial land. Parts of the facility historically operated as a refinery. The facility currently conducts licensed hazardous waste fuel blending, and tank and container storage operations. The facility also stores pharmaceutical waste at this location. Used solvents, rags, fuel sludges, and tank bottoms are trans-shipped, blended into a hazardous waste alternative fuel for use in cement kilns, or commingled and shipped off-site for further treatment or disposal.

Petro-Chem is conducting corrective action cleanup, pursuant to their operating license. Due to legacy, and current operations, PFAS has been included in on-site groundwater investigations. Petro-Chem has sampled four of the 12 on-site monitoring wells for PFAS compounds. PFAS compounds were detected in all four of the monitoring wells sampled, with three wells displaying concentrations above applicable water quality standards.

Groundwater flow is divided across the site; this divide runs roughly north/south and is encountered near the center of the site. Shallow groundwater flows easterly to the east of the divide and westerly to the west of the divide. Groundwater is not used as a drinking water source in the City of Detroit, and there are no known drinking water wells within several miles of the facility. The City of Detroit drinking water intake on Lake St. Claire is upstream of the facility.

Concentrations of PFAS above Part 201 Groundwater-Surface Water Interface (GSI) Criteria reaching the Detroit River is the primary pathway of concern. The Detroit River is approximately a half mile north of this site.

Petro-Chem PFAS Investigation Results Map

Recent Accomplishments

  • On October 29, 2019, Petro-Chem's contractor sampled four existing groundwater monitoring wells at the site for PFAS analysis.
  • On January 22, 2020 EGLE received the results for the sampling conducted in October 2019.  PFAS concentrations were detected above Part 201 drinking water criteria and above GSI criteria at two of four locations. The highest groundwater result was 166 ng/L for PFOS+PFOA. One location, MW-8, exceeded the proposed Maximum Contaminant Levels for Perfluorooctanoic Acid (PFOA) with a detected concentration of 36 ppt.
  • On February 6, 2020, EGLE requested that Petro-Chem develop a workplan detailing how they will perform additional investigations in order to better delineate the on-site extent of PFAS and determine if PFAS concentrations are migrating off-site above Part 201 GSI criteria.
  • A webinar was held on February 13, 2020, with a follow-up meeting held in Detroit on March 5, 2020. These two events were conducted to update residents and other interested parties on all aspects of on-site investigation and cleanup, including a PFAS update.
  • On May 29, 2020, Petro-Chem submitted a workplan to delineate the extent of PFAS on-site and to determine if PFAS concentrations are migrating off-site above Part 201 GSI criteria. Investigation of utility corridors adjacent to the facility (believed to be the primary conduit for contaminated groundwater to migrate off-site) will be prioritized.

Next Steps

  • EGLE is currently reviewing the Corrective Action Investigation Work Plan for PFAS. Once approved, the work plan will be implemented.

Residential Well Testing/Alternate Water Information

  • The area is supplied by municipal water.  EGLE is working with the local health department to confirm there are no residential wells in the area.

Upcoming Community Engagement

  • None scheduled at this time.

Sampling Results: PFOS and PFOA Only

Type of Sample

Date Sampled

Number of Samples

Number of Results Received

 Number of Non-detects Number Between Non-detect and Standard*  Number Greater than or Equal to Standard 

Groundwater

October 2019 4 4  1  1  2
 Cumulative   4 4  1  1  2

*Groundwater results are compared to EGLE Part 201 Criteria of 70 ppt PFOS+PFOA.

       Sampling Notes

  • None at this time.