Latest News

Request for information on perchlorate (ClO4), a chemical to be considered by OEHHA's Science Advisory Board's Developmental and Reproductive Toxicant (DART) Identification Committee.

Final guidance document and "Schoolscreen" spreadsheet for risk assessment at school sites

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

Response to the petition of Bayer Corporation for clarification of the Proposition 65 listing of “Mercury and Mercury Compounds” as chemicals known to cause reproductive toxicity.

OEHHA has provided a number of comments on the risk characterization methodology and conclusions on the draft RCD and EAD for S,S,S-tributyl phosphorotrithioate (DEF, tribufos). These comments and our recommendations, as well as suggested clarifications, additions and corrections, are contained in this report.

OEHHA released a draft document describing development of a unit risk factor for estimating cancer risk associated with inhalation of naphthalene.

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

Three scientific peer reviews on the draft Public Health Goal for perchlorate are available.

Safe use determination for crystalline silica in flat latex paint.

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