From the OEHHA:
As the lead agency for the implementation of Proposition 65, the Office of Environmental Health Hazard Assessment (OEHHA) within the California Environmental Protection Agency intends to list the chemical Metam potassium (CAS No. 137-41-7) as known to the State to cause cancer.
Relevant information related to the possible listing of Metam potassium was requested in a notice published in the California Regulatory Notice Register on December 5, 2008 (Register 2008, No. 49 Z). OEHHA received and responded to public comments.
OEHHA has determined that Metam potassium meets the regulatory criteria for listing based on the findings of the U.S. EPA (U.S. EPA, 1995; 2005; 2007; 2009). OEHHA is therefore issuing this notice of intent to list Metam potassium under Proposition 65.
To download the justification of the listing or to submit comments to the OEHHA follow: NOTICE OF INTENT TO LIST METAM POTASSIUM