The Scientific Review Panel on Toxic Air Contaminants (Panel), established pursuant to California Health and Safety Code section 39670, will hold a public meeting at the following time and place:


DATE: March 5, 2001

TIME: 9:00 a.m.

LOCATION: Extension Center

University of California, Riverside

1200 University Avenue

Riverside, California 92521

(909) 787-4105


  1. Discussion of substances to be included in the Air Toxics Hot Spots Program Risk Assessment Guidelines, Part III: Technical Support Document "Determination of Noncancer Chronic Reference Exposure Levels"

    The Panel will review chronic reference exposure levels for 17 substances* proposed to be included in the Part III guideline document. Part III describes the methods used to determine chronic reference exposure levels, at (or below) which no adverse health effects are anticipated from exposure to the listed chemicals. The Office of Environmental Health Hazard Assessment (OEHHA) staff will present these substances as an addendum to the report approved by the Panel in February 2000.

    (*acrylonitrile, beryllium (and beryllium compounds), chloropicrin, diethanolamine, ethylene dibromide, ethylene glycol butyl ether, fluorides and hydrogen fluoride, isophorone, maleic anhydride, methyl isocyanate, methylene dianiline, nitric acid, phosphine, selenium and selenium compounds (other than hydrogen selenide), sulfuric acid, triethylamine, vinyl acetate)

    2. Update report on implementing Senate Bill 25 (Escutia, 1999)

    OEHHA will give a status report pursuant to SB 25 relating to children and environmental health protection.

    Update on cholinesterase inhibition policy development

    Department of Pesticide Regulation (DPR) and OEHHA staff will give a progress report on cholinesterase inhibition use in pesticide risk assessment.

4. Update on the status of reviewing azinphos methyl as a toxic air contaminant

the agenda items listed above may be considered in a different order at the panel meeting



The Scientific Review Panel (Panel) is charged with evaluating the risk assessments of substances proposed for identification as toxic air contaminants by the Air Resources Board (ARB) and the Department of Pesticide Regulation (DPR). In carrying out this responsibility, the Panel reviews the exposure and health assessment reports and underlying scientific data on which the reports are based, which are prepared by the ARB, DPR, and the Office of Environmental Health Hazard Assessment (OEHHA) pursuant to Health and Safety Code sections 39660-39661 and 44360, and Food and Agricultural Code sections 14022-14023. These reports are prepared for the purpose of determining whether a substance or pesticide should be identified as a toxic air contaminant, or as guidelines to be used in preparing health risk assessments. The Panel welcomes written comments or submissions from all parties regarding a report. To assure adequate review, the Panel does not accept written or oral comments from the public at its meetings; comments and submissions should be submitted to the ARB pursuant to the requirements specified in the notice of availability of a report for public review. These submissions are received and carefully reviewed and considered by the Panel members prior to the public meeting. Transcripts to previously held Panel meetings can be found through the ARB web site For further information please contact:

Jim Behrmann c/o Peter Mathews

Air Resources Board

1001 I Street

P. O. Box 2815

Sacramento, California 95812

Telephone: (916) 323-8711

Fax: (916) 327-1497

E-mail: - or -


This facility is accessible to persons with disabilities. If accommodation is needed, please contact Peter Mathews at (916) 323-8711 as soon as possible. For persons with a hearing or speech impairment, please use our Telephone Device for the Deaf at (916) 324-9531 or (800) 700-8326 for calls from outside the Sacramento area.