Kent County, Grand Rapids, Cottage Grove and Marshall Area

Updated: December 11, 2019

Cottage Grove Marshall Area PFAS Investigation Map DRAFT 20191023Background

The Cottage Grove and Marshall Area site includes the 800 block of Cottage Grove Street, SE and 1500 block of Marshall. Several metal plating operations have existed in this neighborhood from the 1960s to present day.

Based on information in the file, natural groundwater flow is to the southwest toward Silver Creek, which is in a below-grade culvert approximately 600 feet south of the investigation area. Investigations have also shown a westerly component to groundwater flow near the historic natural path of Silver Creek.

Recent Accomplishments

  • On October 8, 2019, EGLE staff met with a potential liable party to outline the need for further investigation in the area.
  • On November 8, 2019, EGLE received a report from the Kent County Health Department confirming that the businesses and residences in the area were connected to the municipal water supply.  EGLE worked with the city of Grand Rapids to corroborate this report and confirm several locations which did not have documentation in the Health Department’s file.  In summary, there are no drinking water receptors in this investigation area.
  • On November 12, 2019, EGLE received a letter (dated October 31, 2019) which detailed the potential liable party’s intention to complete additional investigation activity in the area in January 2020.  This letter also asserted that the company has not conducted plating operations that required the use of PFAS-containing products and attributed the presence of PFAS in the area to previous operators.

Next Steps

  • A potential liable party will commence an investigation at their facility to assess the groundwater and soil at that facility.
  • EGLE will develop an action plan to assess groundwater upgradient of this investigation area to determine whether other nearby potential sources are contributing to the contamination identified in the groundwater.

Residential Well Testing/Alternate Water Information

  • Surrounding residents/businesses are on municipal water from the city of Grand Rapids. There are no drinking water receptors in the current investigation area.

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

Groundwater

May 30, 2019 1 1 0 0 1

Cumulative

  1 1 0 0 1

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

Sampling notes

  • None at this time.

Cottage Grove and Marshall Area Historical Timeline

Cottage Grove and Marshall Area site includes the 800 block of Cottage Grove Street, SE and 1500 block of Marshall. Several metal plating operations have existed in this neighborhood from the 1960s to present day. Based on information in the file, natural groundwater flow is to the southwest toward Silver Creek, which is in a below grade culvert approximately 600 feet south of the investigation area. Investigations have also shown a westerly component to groundwater flow near the historic natural path of Silver Creek.

  • On May 30, 2019, a single groundwater sample was collected from a temporary monitoring well on the southeast side of the property.
  • On July 17, 2019, EGLE received the results of the sample collected in May, which was PFOS + PFOA  of 1,410 ppt.
  • On September 20, 2019, EGLE sent a compliance communication to a potential liable party requesting history of PFAS use and additional investigation.