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Advisory based on mercury.

Impervious surfaces impact the hydrology, water quality and aquatic and riparian habitat within a watershed.  OEHHA has developed impervious surface coefficients useful in stormwater management runoff analyses, in watershed assessment as an indicator of watershed health, and in land use planning to identify areas of higher or lower imperviousness and opportunities to reduce impervious cover.

OEHHA intent to list 4-Methylimidazole (4-MEI) as known to the state to cause cancer.

38 chemicals for prioritization and consideration by the May 29, 2009 Carcinogen Identification Committee

The fish advisory guidelines provide information to help consumers choose the safest fish to eat. They also recommend how often fish can be eaten to promote health benefits and avoid health risks for fish caught from San Pablo Reservoir in Contra Costa County.

OEHHA released two documents that would form the basis for the standard that is intended to ensure safe human re-occupancy of a residence after use as an illegal drug lab.

Fish advisory for San Pablo Reservoir.

A draft Public Health Goal for 1,2,3-trichloropropane is available.  Peer review of the document was done by three University of California scientists, and their comments, in addition to OEHHA's responses, are available.

General information and technical resources that provide information to scientists in local public health and natural resource agencies, as well as the public, about microcystins and risks associated with exposure to this family of toxins.

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