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On July 15, 2009, OEHHA received a petition from the Natural Resources Defense Council (NRDC) asking that OEHHA initiate the process for listing bisphenol-A (BPA) as a reproductive toxicant under the Safe Drinking Water and Toxic Enforcement Act of 1986

This memorandum represents an update of the literature review and evaluation for the existing PHG for bentazon (OEHHA, 1999).  Our re-evaluation supports the previous PHG derivation in 1999, and no new data would justify a significant change to the document. 

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

The revised CHHSLs for lead and lead compounds are 80 mg/kg soil for residential property and 320 mg/kg soil for commercial/industrial property. The revised CHHSLs for beryllium and beryllium compounds and for beryllium oxide are 16 mg/kg soil for residential property and 190 mg/kg soil for commercial/industrial property. The revised CHHSLs for beryllium sulfate are 2.9 mg/kg soil for residential property and 6.3 mg/kg soil for commercial/industrial property.

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