State of California
                      AIR RESOURCES BOARD
                       Resources Building
                       1416 Ninth Street
                         Sacramento, CA
                         April 21, 1971
                           9:30 a.m.

1.   Opening Statement . . . . . .Dr. A.J. Haagen-Smit, Chairman.

2.   Minutes of March 17-18, 1971 Meeting.

3.   Report of Technical Advisory Committee - R. Robert Brattain,

4.   Public Hearing:     Affidavit on Unsaturation and Reid Vapor
                         Pressure of Gasoline.

5.   Public Hearing:     Request for Change in Air Basin
                         Boundaries in Solano and Sonoma

6.   Attorney General's Opinion on ARB Authority to Regulate Lead
     in Gasoline Assembly-Line Test Data.

7.   Assembly-Line Test Data.

8.   Approvals.

     a.   LPG and NG Conversion for Heavy-Duty Vehicles.
     b.   Approvals of Control Systems.
     c.   Experimental Permits.
     d.   Approvals Under Section 27156, VC.

9.   Other Business.

10   Committee Reports.

11.  Remarks from the Audience.


Staff Report on Proposed Affidavit on Unsaturation and Reid Vapor
Pressure of Gasoline.

At its January meeting, the Board adopted regulations regulating
Reid vapor pressure and unsaturation of gasoline.  this action
was taken pursuant to Assembly Bills 80 and 81 enacted last year.


Staff Report on Proposed Boundary Changes of the San Francisco
Bay Area Air Basin.

The Bay Area air Pollution Control District was created in 1955
(Chapter 1797 of the California Statutes of 1955).  It includes
the area within the boundaries of the Counties of Alameda, Contra
Costa, Marin, Napa, San Francisco, San Mateo, Santa Clara, Solano
and Sonoma.

Prior to the passage of Chapter 1235 of the 1970 California
Statutes, Solano, Napa and Sonoma Counties had the option to
remain inactive members of the District.  Under the provisions of
Chapter 1235, these counties will become active members of the
Bay Area Air Pollution Control District, effective July 1, 1971. 
The law also provides that the Board of Supervisors of any of the
three counties may adopt resolution declaring that a portion of
their respective counties is in an air basin other than San
Francisco Bay Area Air Basin.  Such resolutions must be presented
to the Air Resources board for approval.  The law further
provides that any portion of these counties determined to lie
outside the San Francisco Bay Area Air Basin will be excluded
from the Bay Area Air Pollution Control District; and will be
required to be within an effective air pollution control


Staff Report on ARB Authority to Regulate Lead in Gasoline.

Attached is the Attorney General's opinion advising that the ARB
does not have the authority to regulate lead in gasoline unless
it is done by the Board adopting regulations for or acting on
behalf of a county or regional air pollution control district
pursuant to Health and Safety Code Sections 39052(f) and 39054
(investigation, report, public hearing, etc).  this opinion has
been sent to the attorney for the Environmental Defense Fund.

EDF has requested time to make a statement with respect to the

The ARB need take no further action with respect to regulating
lead in gasoline.  The Board in November refused to hold public
hearings with respect to the regulation of lead in gasoline.  The
Attorney General's opinion supports that action.

With respect to the other points in the EDF petition, a
definition of lead is not needed at this time - no action needed;
an ambient air quality standard has been set for lead; and the
staff is still working on a practical test procedure for lead


Assembly-Line Motor Vehicles Emission Testing.

Assembly-line or pre-delivery testing of new motor vehicles is
required by legislation.  This report presents the current status
of the Board's assembly-line testing program and summarizes the
results of test data submitted by the vehicle manufacturers from
their own assembly-line tests.


Tax Exemptions for Heavy-Duty Vehicle Conversions to Natural and
Liquefied Petroleum Gas.

Prior to the February Board meeting, the Attorney General's
office had orally advised the staff that there was sufficient
authority in AB's 9 and 321 (1970) to permit the Board to approve
devices for heavy-duty vehicles.  Accordingly, a procedure was
selected and resolutions 70-9-C, 70-16-C, 70-34-C, and 70-68-B
were adopted by mail ballot, approving systems of four

By letter dated March 5, 1971 the Attorney General's office
advised that exemptions for heavy-duty vehicles could not be
permitted, even if an equivalent emission standard were adopted. 
The Attorney General gave little weight to the intent of the
author, but looked to the specific wording of the statute. 
Unfortunately the Revenue and Safety Code sections involved refer
to sections of the Health and Safety Code which specify emissions
for light-duty vehicles; they make no reference to sections
specifying emission standards for heavy-duty vehicles.

At its March 17-18, 1971 meeting, the Board decided not to
confirm these resolutions pending a further review of the
question by the Attorney General.  He has yet to submit his
comments.  The staff recommends that resolutions 70-9-C, 70-16-C,
70-34-C, and 70-68-B not be confirmed and forwarded to the Board
of Equalization until the Attorney General has indicated the ARB
has the authority to approve exemptions for heavy-duty vehicles.