Download the chRD for manganese and pentachlorophenol as a pdf file here

The Office of Environmental Health Hazard Assessment (OEHHA) of the California Environmental Protection Agency announces the availability of the final Report “Development of Health Criteria for School Site Risk Assessment Pursuant to Health and Safety Code Section 901(g): CHILD-SPECIFIC REFERENCE DOSES (chRDs) FOR SCHOOL SITE RISK ASSESSMENT—Manganese and Pentachlorophenol.” Health and Safety Code (HSC), Section 901(g) requires the Office of Environmental Health Hazard Assessment (OEHHA), in consultation with the appropriate entities within the California Environmental Protection Agency, to identify those chemical contaminants commonly found at school sites and determined by OEHHA to be of greatest concern based on child-specific physiological sensitivities. HSC 901(g) also requires OEHHA to annually evaluate and publish, as appropriate, numerical health guidance values or chRDs for those chemical contaminants until the contaminants identified have been exhausted.

In developing these chRDs, OEHHA has followed the requirements set forth in Health and Safety Code Section 57003 for receiving public input. The first draft document was posted on the OEHHA Website (www.oehha.ca.gov) in December 2004. A public workshop was held in January 2005 to discuss the scientific basis and recommendations in the draft report. After considering public comments and input from an external peer review panel assembled by the Office of the President, University of California, OEHHA revised the document for additional public review in April 2006. The release of the final document is a culmination of this public input process.

If you would like to receive further information on this announcement or have questions, please contact our office at (916) 324-2829 or the address below:

Mr. Leon Surgeon
Integrated Risk Assessment Branch
Office of Environmental Health Hazard Assessment
P.O. Box 4010
1001 I Street, MS-12B
Sacramento, California 95812-4010
FAX: (916) 322-9705

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