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For chemical-specific screening levels for use in assessing contaminated sites, please refer to HHRA Note 3 (DTSC HERO).

Peer-review comments and OEHHA's responses regarding the draft Public Health Goal for hexavalent chromium are available.

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

This document establishes a PHG of 0.0007 parts per billion for the solvent 1,2,3-trichloropropane in drinking water.

Adoption of changes to the Safe Use Determination regulations to delete existing language in subsection (a) providing that Safe Use Determinations are advisory only and replace it with language providing that the Safe Use Determinations shall have presumptive effect, increase the filing fee for a Safe Use Determination request from $500.00 to $1000.00 in subsection (d)(1), and to create in subsection (g) a time limit of sixty (60) days for submission of additional material requested by OEHHA.

This memorandum represents an update of the literature review and evaluation of the existing PHG for 1,2-dichlorobenzene.  Our re-evaluation supports the previous PHG derivation.

On January 29, 2009, the Office of Environmental Health Hazard Assessment (OEHHA) convened a panel of scientific experts to provide input on the Toxics Information Clearinghouse, established by SB

Request for  relevant information on the developmental and reproductive toxicity of bisphenol-A, chlorpyrifos, chromium, DDE, and sulfur dioxide.

Final Public Health Goal for Trichloroethylene in Drinking Water (2009).

Marijuana smoke listed effective June 19, 2009 as known to the state of California to cause cancer.