OEHHA

California OEHHA Revises RELs for 1,3-Butadiene

March 1, 2013

The Office of Environmental Health Hazard Assessment (OEHHA) have revised the "" document for by the Scientific Review Panel on Toxic Air Contaminants. The revisions of the draft were made due to comments from the Scientific Review Panel's meeting on the subject on October 16, 2012.

California Prop 65: Hydrogen Cyanide, Cyanide Salts Listed as Known to Cause Reproductive Toxicity

July 5, 2013

The Office of Environmental Health Hazard Assessment (OEHHA) has added to the list of chemicals known to the State to cause reproductive toxicity, in accordance with Proposition 65 (effective July 5th, 2013).

California OEHHA: Benzene Reference Exposure Levels Comment Period

June 21, 2013

The Office of Environmental Health Hazard Assessment (OEHHA) is requesting public comments in regards to a draft document which proposes a revision to the Reference Exposure Levels (RELs) of benzene. RELs define the concentrations in the air which are not expected to cause adverse health effects for specified exposure durations. Under the Air Toxics Hot Spots Program (Health and Safety Code Section 44360(b)(2)), the OEHHA is obligated to provide guidelines on how to conduct health risk assessments.

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