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Risk Assessment
Revised California Human Health Screening Level for Lead (Review Draft)
[05/18/09]
Download the Review Draft Revised California Human Health Screening Level for Lead here.
The Office of Environmental Health Hazard Assessment (OEHHA) of the California Environmental Protection Agency is making available for review and comment a draft report: “California Human Health Screening Level for Lead”. Health and Safety Code Section 57008 (The California Land Environmental Restoration and Reuse Act; SB32, Escutia, Chapter 764, Statues of 2001) requires the California Environmental Protection Agency (Cal/EPA), “in cooperation with the Department of Toxic Substances Control, the State Water Resources Control Board, and the Office of Environmental Health Hazard Assessment,” to publish a list of screening numbers for specific contaminants.
The current screening numbers for lead are 150 mg/kg soil for residential use and 3500 mg/kg soil for commercial/industrial use. These screening numbers are based on a blood lead “level of concern” of 10 micrograms per deciliter (µg/dL). OEHHA has replaced the 10 µg/dL “level of concern” with a source-specific “benchmark change” of 1 µg/dL. Therefore, OEHHA is proposing new residential and commercial/industrial California Human Health Screening Levels consistent with the newly established benchmark. The proposed new residential and commercial/industrial screening numbers and the accompanying documentation will be posted for public comment until June 30, 2009.
Comments may be sent to:
Leon Surgeon
Office of Environmental health Hazard Assessment
1001 I Street, MS-12B
PO Box 4010
Sacramento, CA 95812-4010
Fax: (916) 322-9705
e-mail: irab@oehha.ca.gov
