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OEHHA has provided a number of comments on the risk characterization methodology and conclusions on the draft RCD for Deltamethrin.
OEHHA recommends a Notification Level of 170 ppb (ug/L) for naphthalene in drinking water.
Notice of Intent to List chemical as causing cancer under the authoritative bodies mechanism: o-phenylphenol
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
OEHHA developed health values for the inhalation pathway for the Toxic Air Contaminant (TAC), methyl tertiary-butyl ether (MTBE).
Comment Period - Notice of Intent to List Chemicals: Chloroprene, Cobalt sulfate heptahydrate, Fenoxycarb
Notice of Intent to List chemicals as causing cancer under the authoritative bodies mechanism: Chloroprene, Cobalt sulfate heptahydrate, Fenoxycarb
The Office of Environmental Health Hazard Assessment (OEHHA) is adding methyl chloride to the list of chemicals known to the State to cause reproductive toxicity, effective March 10, 2000.
OEHHA released for public comment the Air Toxics "Hot Spots" Program Risk Assessment Guidelines Part IV: Exposure Assessment and Stochastic Analysis Technical Support Document.