Having trouble viewing this email? View it as a Web page.

SRV 2025 Update

The Minnesota Pollution Control Agency (MPCA) has completed its annual review and update of the soil reference values (SRVs). As a reminder, SRVs are risk-based screening values used to evaluate potential risk from exposure to contaminated soil. They should be used in conjunction with other relevant site-specific information when evaluating potential risk exposure pathways. One new chemical (Perfluorodecanoic acid, “PFDA”) has been added to the SRV spreadsheet, and changes were made to the SRVs for 13 chemicals. The changes made during the 2025 annual review are summarized in the table below, along with the reason for the change.

Edits have also been made to the SRV Technical Support Document. The specific edits made are listed in the beginning of the document, under “revision history”.

The updated SRV spreadsheet and technical support guidance are now live on the MPCA website at https://www.pca.state.mn.us/business-with-us/MERLA guidance. If you’re not seeing the new 2025 version when you download it from the website, you may need to clear your browsing history, reopen your browser, and try again.

SRV update summary:

• Added one new PFAS chemical – PFDA
• Updated/added new oral toxicity values – PFBA, PFHxS, PFOS, PFOA, Acrylonitrile, γ-HCH, Dibromochloromethane, Dibromomethane
• Updated/added new inhalation toxicity values – Formaldehyde, Chloroform, Ethyl benzene
• Updated/added new oral and inhalation toxicity values - Cr(VI), 1-Methylnaphthalene

Table summarizing the differences between 2024 and 2025 SRVs is below.

The mission of the MPCA is to protect and improve the environment and human health.

St. Paul • Brainerd • Detroit Lakes • Duluth • Mankato • Marshall • Rochester

www.pca.state.mn.us • Toll-free and TDD 800-657-3864