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June 4, 1999 issuance of a Safe Use Determination for crystalline silica in sorptive mineral-based pet litter.
OEHHA conducted an expedited human health risk assessment of tertiary butyl alcohol in drinking water. An interim assessment concentration of 12 µg/L was determined.
OEHHA determined that a proposed action level of 0.005 ug/L for 1,2,3-trichloropropane in drinking water is appropriate.
Candidates for listing via the Authoritative Bodies mechanism found not to meet the scientific criteria (22 CCR 12306(g)).
Notice of intent to list the chemical diuron as known to the State to cause developmental toxicity.
Notice of intent to list chemical: Thiabendazole.
Chlorsulfuron is listed effective May 14, 1999 pursuant to an administrative listing mechanism provided under the Act, based upon a formal identification by an authoritative body that the chemical causes reproductive toxicity.
Chemicals Listed Effective May 18, 1999 as Known to the State to Cause Reproductive Toxicity: Bromacil lithium salt, Bromoxynil octanoate, Terbacil, and Thiophanate methyl
Notice of intent to list chemicals as causing reproductive toxicity under the authoritative bodies mechanism: Avermectin B1, Delta isomer of avermectin B1, N-methylpyrrolidone, and Imazalil
Chemicals Meeting the critieria for listing as Developmental and Reproductive Toxicants (DARTs) via the Authoritative Bodies Mechanism: 4 chemicals identified by U.S. EPA