Arsenic in Soil in South Minneapolis
The former CMC Heartland Partners Lite Yard site is located in the Hiawatha industrial corridor on the eastern edge of the Phillips neighborhood in south Minneapolis. The site was used from 1938 – 1963 to produce and store arsenic-based pesticides. Contamination was discovered in 1994 during reconstruction of Hiawatha Avenue. High levels of arsenic were found in soil on the site and in the groundwater underneath the site. Clean up of the site was completed in 2005 and it has since been redeveloped as an office building that includes Smiley’s Clinic.
Because the arsenic containing pesticide was stored in large, uncovered piles, state officials were concerned that some arsenic could have been carried by the wind into nearby residential yards. More information on the sampling that followed can be found in the Offsite Soils information sheet or the Health Consultation, Off Site Soils: CMC Heartland Partners Lite Yard Site, Aug. 2006.
In 2004 the Minnesota Department of Agriculture invited the US Environmental Protection Agency (US EPA) to take the lead in the offsite residential soil investigation. The US EPA determined that soil with arsenic levels above 95 ppm should be removed to protect people from short term exposure to arsenic. In September 2007 the site was listed on the National List of Priorities (“Superfund”), which allows additional funds to be used to clean up lower levels of arsenic in soil that could be a concern over many years of exposure. MDH has written another report on the residential soil contamination, which is available below under Public Health Assessment.
|Highly contaminated soils are excavated as part of the CMC site clean up.|
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Arsenic Exposure Checklist (PDF: 25KB/ 1 page)
This is a checklist for healthcare providers to assist in assessing possible arsenic exposure.
Ironite products with higher levels of arsenic were registered in Minnesota from 1992-2003. These registrations expired at the end of 2003. New formulations of Ironite were first registered in Minnesota in 2005. Arsenic levels in the new products have been confirmed by the Minnesota Department of Agriculture to be below the limits of detection.
Ironite formulations purchased before 2003 should be kept out of the reach of young children. The product can be taken to a local household hazardous waste collection program for disposal.
For additional information on metals in fertilizers, see Heavy Metals in Fertilizers.
From the Minnesota Department of Agriculture:
CMC Heartland Lite Yard Site
Collection and Analysis of Soil Samples for Arsenic Recommended Procedures for Homeowners-Renters-Residents (PDF: 16KB/ 1 page)
From the Environmental Protection Agency:
South Minneapolis Residential Soil Contamination Site
From the City of Minneapolis:
Tenant notification requirements - Minneapolis arsenic contamination zone
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Health Consultation, Off Site Soils: CMC Heartland Partners Lite Yard Site, Aug. 2006 (full document) (PDF: 18,684KB/49 pages)
Or download Aug. 2006 document by section below:
Health Consultation, Off Site Soils: CMC Heartland Partners Lite Yard Site, Aug. 2006, text only (PDF: 918KB/21 pages)
Health Consultation, Off Site Soils: CMC Heartland Partners Lite Yard Site, Aug. 2006, Figures 1-6 (html page)
Figures 1-2 only (PDF: 1,675KB/3 pages)
Figure 3 only (PDF: 4,616KB/1 pages)
Figures 4-6 only (PDF: 8,247KB/3 pages)
Appendices only (PDF: 3,350KB/21 pages)
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Public Health Assessment
Below is the final edition of the Public Health Assessment for residential soil contamination.
Public Health Assessment for South Minneapolis Neighborhood: Soil contamination NPL site, July 2008 (full document) (PDF: 4,102KB/57 pages)
Or download the document by section below:
Public Health Assessment for South Minneapolis Neighborhood: Soil contamination NPL site, Jul. 2008, text only (PDF: 436KB/28 pages)
Figures 1-3 (PDF: 751KB/4 pages)
Figures 4-6 (PDF: 672KB/3 pages)
Appendix A (first 18 pages) (PDF: 384KB/18 pages)
Appendix A (last 4 pages) (PDF: 1,991KB/4 pages)