Latest News
Safe harbor levels, which include No Significant Risk Levels (NSRLs) for cancer-causing chemicals and Maximum Allowable Dose Levels (MADLs) for chemicals causing reproductive toxicity.
The Office of Environmental Health Hazard Assessment (OEHHA) is providing notice of a modification to the proposed Proposition 65 No Significant Risk Level (NSRL) for Antimony Trioxide.
Summary table of all OEHHA acute, 8-hr and chronic Reference Exposure Levels (chRELs) as of August 2020. Documentation for these values is available in the Air Toxics Hot Spots Program Guidance Manual for the Preparation of Health Risk Assessments 2015.
The Office of Environmental Health Hazard Assessment is adopting new Reference Exposure Levels for Trimethylbenzenes for use in the Air Toxics Hot Spots Program. Reference Exposure Levels are airborne concentrations of a chemical that are not anticipated to result in adverse noncancer health effects for specified exposure durations in the general population, including sensitive subpopulations.
A state fish advisory issued today for El Capitan Reservoir in San Diego County provides safe-eating advice for black bass species, Blue Catfish, Mississippi Silverside, Sculpin, sunfish species and Threadfin Shad.
2020 Recommendations to the California Public Utilities Commission Regarding Health Protective Standards for the Injection of Biomethane into the Common Carrier Pipeline.
OEHHA has developed a priority list for the development of NSRLs
The California Environmental Protection Agency’s Office of Environmental Health Hazard Assessment (OEHHA) intends to list anthracene (CAS RN 120-12-7), 2‑bromopropane (CAS RN 75-26-3 [corrected as of June 27, 2023]), and dimethyl hydrogen phosphite (CAS RN 868-85-9) as known to the state to cause cancer.
OEHHA provided a report to the legislature detailing its activities related to the Children's Environmental Health Program.
The Office of Environmental Health Hazard Assessment is adopting revised cancer inhalation unit risk (IUR) and slope factors for cobalt and water-soluble cobalt compounds for use in the Air Toxics Hot Spots program for use in the Air Toxics Hot Spots Program.