State of California AIR RESOURCES BOARD State Office Building 455 Golden Gate Avenue-Room 1194 San Francisco, CA September 15, 1971 9:30 a.m. AGENDA 1. Opening Statement . . . . . . . . . .A.J. Haagen-Smit, Ph.D. Chairman 2. Minutes of July 21, 1971 Meeting. 3. Report of Technical Advisory Committee. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . R. Robert Brattain Chairman 4. Public Hearing; Standards & Test Procedures for 1973 and Later Model Light-Duty Vehicles. 5. Used Car Control. a. Executive Committee Report. b. Air Quality Products, Inc. 6. Public Hearing; Air Basin Boundaries in Kern County. 7. Board Policy on Granting Extension to Open Burning Dumps. 8. Approvals. a. New Car. b. Experimental. c. Ford - Heavy-Duty Evaporative Loss Controls. d. Others. 9. Report on Manufacturers' Programs for Engine Adjustments. 10. Other Business. a. Low Emission Standards for State Purchase of Vehicles. b. San Luis Obispo County Request For Exemption to Agricultural Burning Guidelines. c. New Resolutions for findings Under Vehicle Code Section 27156. d. Emission Data on LPG and NG Conversions. e. Federal Requirements for Implementation Plans. f. Miscellaneous. 11. Committee Reports. 12 Remarks from the Audience. ITEM Application for Accreditation of an Exhaust Emission Control System for Used Vehicles. INTRODUCTION This report presents the staff evaluation of the Emission Control Technology, Inc., exhaust emission control system for used vehicles. The bases of evaluation and the requirements set forth in the California Health and Safety Code, Sections 39107 and 39175 to 39184, and Title 13 of the California Administrative Code, Chapter 3, Subchapter 2, Articles 2 and 3. ITEM Staff Report on Petition for Boundary Change Between San Joaquin Air Basin and Southeast Desert Air Basin. The coordinating councils of the San Joaquin Valley and the Southeast Desert air basins in letters dated June 9, 1971 and August 5, 1971, have requested that the common boundary between the air basins be revised to place the Tehachapi area within the Southeast Desert Basin. A notice of the public hearing to consider this change issued on August 12, 1971, is attached. No statements or arguments relative to this change have been received to date. The topographic openness of this area to the southeast direction and the predominant wind direction toward the desert make the control of sources in this area more important to the desert community than to the valley community. Approval of this request is recommended. ITEM San Luis Obispo County Requests for Exemption from Agricultural Burning Guidelines. INTRODUCTION The Board's's guidelines on agricultural burning provide that areas above 4000 feet are exempted from the guidelines, and that air pollution control districts may apply to the Board to have large, remote and sparsely populated areas between 2000 feet and 4000 feet elevation exempted from the guidelines. In accordance with these provisions, San Luis Obispo County has requested that an 864 square mile area be exempted. The area encompasses that part of the county south of 35ø 30' N latitude and east of 120ø 7.5' W longitude (see Figure 1). Included in the area are the Carrizo Plain, and the Northern part of Cuyama Valley. ITEM Emission Measurements from Vehicles Modified to Operate on Natural Gas or Liquid Petroleum Gas Fuel. INTRODUCTION The Air Resources Board has requested the staff to submit an updated report on emissions from vehicles utilizing liquefied petroleum gas (LPG) and natural gas fuels. The Board's Laboratory started emission tests in May 1969 on a fleet of ten State vehicles supplied by the Department of Public Works and modified to run on natural gas or gasoline. A similar fleet of five vehicles belonging to the City of Los Angeles was modified and tested. The two fleets of natural gas fueled vehicles received periodic tests over a one year period. In July 1970, a total of ten State vehicles (4 sedans, 2 pickup trucks, and 4 utility body trucks) were converted to operate entirely on LPG.