CALIFORNIA AIR RESOURCES BOARD
                                
                   Resources Agency Building
                    Auditorium, First Floor
                       1416 Ninth Street
                         Sacramento, CA
                                
                        January 23, 1986
                           10:00 a.m.
                                
                             AGENDA

                                                             Page

86-1-1    Second Annual Joint Meeting of the Air Resources
          Board and Scientific Review Panel on Toxic Air
          Contaminants.

86-1-2    Public hearing to Consider the Adoption of a        001
          Regulatory Amendment Changing the Boundary
          Between the Mountain Counties Air Basin and the
          Sacramento Valley Air Basin in Placer County.

86-1-3    Public Hearing to Consider the Adoption of a        037
          Regulatory Amendment Identifying Hexavalent
          Chromium as a Toxic Air Contaminant.

Other Business

a.   Closed Session
     1.   Personnel (as authorized by State Agency Open Meeting
          Act, Govt. Code Sec. 11126(a).)
     2.   Litigation (Pursuant to the attorney-client privilege,
          Evidence Code Sec. 950-962, and Govt. Code Sec.
          11126(q).)
b.   Research Proposals
     1.   Research Proposal Number 1341-120 entitled "An Analysis 
          of the Sacramento Valley Experiment."
     2.   Research Proposal Number 1352-121 entitled "Development 
	  and Implementation of an Up-to-Date Photochemical 
	  Mechanism for Use in Airshed Modeling."  By 
	  University of California, Riverside.
     3.   Research Proposal Number 95-15 entitled "Effects if 
	  Acid Deposition on Materials."  By Environmental 
	  Monitoring & Services, Inc.
c.   Invitation for Bid entitled "Base Map for Emerald Lake Watershed."

c.   Delegations to Executive Officer

                         ITEM NO.: 86-1-3

Proposed Identification of Hexavalent Chromium as a Toxic Air
Contaminant (Regulatory).

                          RECOMMENDATION

The ARB staff recommends that hexavalent chromium (Cr(VI)) be
identified as a toxic air contaminant having no identified
threshold exposure level below which no significant adverse
health effects are anticipated.

                            DISCUSSION

In accordance with the provisions of Health & Safety Code Section
39650 et seq, the ARB staff, after consulting the Department of
Health Services (DHS) selected hexavalent chromium for the
Board's consideration for listing as a toxic air contaminant. 
The staff selected hexavalent chromium because it is a known
animal carcinogen and potential human carcinogen, it is emitted
from certain industrial processes, and has been measured in the
ambient air.

As required by Health & Safety Code Section 39661, a report was
prepared jointly by DHS and ARB staff reviewing the health
effects and anticipated exposure levels of hexavalent chromium. 
The report was submitted to the Scientific Review Panel
established by Section 39670.  The Scientific Review Panel found
that the chromium report is scientifically acceptable and
submitted its written findings to the Board.  The Scientific
Review Panel has recommended that the Air Resources Board list
hexavalent chromium by regulation as a toxic air contaminant, but
was unable to recommend an exposure level below which
carcinogenic effects would not have some probability of
occurring.

           SUMMARY AND IMPACTS OF PROPOSED BOARD ACTION

The identification of hexavalent chromium as a toxic air
contaminant will not in itself have any environmental or economic
impacts.  However, specific control measures may be developed
subsequent to identification.  Analyses of potential
environmental and economic impacts will be included in the
consideration of such control measures.