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The PHG is established at 0.1 ppb, based on carcinogenic effects.

Several studies have shown links between exposure to air pollution or traffic and low birth weight, premature birth and birth defects. Researchers examining health-care data on nearly 5,000 pregnant women in California found that African-Americans were about three times more likely to miscarry if they lived within a half-block of a freeway or busy boulevard than if they resided near lighter traffic.

OEHHA has submitted findings on the active ingredient Chloropicrin.

Notice of intent to list carbaryl and spirodiclofen as known to the State to cause cancer via the Authoritative Bodies mechanism.

Proposal to allow 60-day notices of violation to be sent to certain state and local prosecutors via electronic mail, if the prosecutor has consented to such service.

Request for relevant information on chemicals being considered for listing as known to the State to cause reproductive toxicity by the Authoritative Bodies mechanism: DDE and nitrobenzene.

Proposal to establish a specific regulatory level posing no significant risk for fumonisin B1.

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. 

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.