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OEHHA has provided a number of comments on the risk characterization methodology and conclusions on the draft RCD for Propargite. These comments and our recommendations, as well as suggested clarifications, additions and corrections, are contained in this report.

Availability of draft Hazard Identification Documents for 1,2-epoxybutane and verapamil, chemicals to be considered by the CIC for possible addition to the Proposition 65 list

Availability of the draft Hazard Identification Documents for chloroform and progesterone, chemicals to be considered by the DART Identification Committee for possible addition to the Proposition 65 list

OEHHA adopted a unit risk value and slope factor for naphthalene for estimating cancer risks associated with inhalation exposures.  These values are to be used in the Air Toxics Hot Spots and Toxic Air Contaminant (TAC) programs .

OEHHA adopted a unit risk value of 3.4 x 10-5 (µg/m3)-1 and slope factor of 1.2 x 10-1 (mg/kg-day)-1 for estimating the cancer risk associated with inhalation exposures to naphthalene. These values are based on data for incidence of nasal tumors in male rats after naphthalene exposure.

OEHHA announced intention to initiate risk assessments in 2004 for the following chemicals: bromate, chlorite, haloacetic acids, and nitrosodimethylamine (NMDA).  Additionally, OEHHA announced intention to update reviews for the following chemicals: cadmium, copper, glyphosate, lindane, mercury, methoxychlor, oxamyl, pentachlorophenol, thallium, and trichloroethylene.

Notice of Intent to List Chemical - Vanadium Pentoxide meets the criteria for listing under Title 22, Cal. Code of Regs., section 1230, for listing as causing cancer under the authoritative bodies mechanism

Chemicals listed effective July 9, 2004 as known to the state of California to cause cancer: “aristolochic acids” and “herbal remedies containing plant species of the genus Aristolochia".

Extension of public comment period on five chemicals under consideration for possible listing as known to cause reproductive toxicity via the authoritative bodies mechanisms.

The Office of Environmental Health Hazard Assessment proposes to establish specific regulatory levels posing no significant risk for 1,2-dichloropropane and naphthalene.  OEHHA also proposes to establish specific regulatory levels for 1,2-dibromo-3-chloropropane, disodium cyanodithioimidocarbonate, ethyl dipropylthiocarbamate, ethylene glycol monomethyl ether, ethylene glycol monomethyl ether acetate, methyl bromide as a structural fumigant, sodium dimethyldithiocarbamate and thiophanate-methy.