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The Emerging Environmental Challenges Program was established in the Office of Environmental Health Hazard Assessment (OEHHA) in fiscal year 1996/97, and charged with developing a capability to anticipate future environmental challenges which may confront programs in the California Environmental Protection Agency (Cal/EPA). 

Following endorsement by the Scientific Review Panel, OEHHA adopted Chronic Reference Exposure Levels for 16 chemicals.  This was the 2nd wave included with the Air Toxics Hot Spots Program Risk Assessment Guidelines Part III: The Determination of Chronic Reference Exposure Levels for Airborne Toxicants.

OEHHA has provided a number of comments on the risk characterization methodology and conclusions on the draft RCD for Deltamethrin.

Dimethyl chlorothiophosphate, a candidate for listing via the Authoritative Bodies Mechanism was found not to meet the Scientific Criteria (22 CCR 12306(g)) for authoritative bodies listing as causing reproductive toxicity under Proposition 65

Notice of Intent to List chemical as causing cancer under the authoritative bodies mechanism: o-phenylphenol

OEHHA developed health values for the inhalation pathway for the Toxic Air Contaminant (TAC), methyl tertiary-butyl ether (MTBE).

Notice of Intent to List chemicals as causing cancer under the authoritative bodies mechanism: Chloroprene, Cobalt sulfate heptahydrate, Fenoxycarb

Chemical listed effective March 3, 2000 as known to the state to cause reproductive toxicity: Pravastatin sodium.

Availability of the draft hazard identification document for sodium nitrite to be considered at the June 2, 2000 Meeting of the Developmental and Reproductive Toxicant Identification Committee.

Comment period on the draft hazard identification document for sodium nitrite to be considered at the June 2, 2000 meeting of the Developmental and Reproductive Toxicant Identification Committee.