State of California AIR RESOURCES BOARD Resources Building Room 1131 1416 Ninth Street Sacramento, CA August 27, 1975 9:00 a.m. AGENDA Page 75-15-1 Approval of Minutes of July 15, 1975 Meeting. 75-15-2 Status Report on Technology to Control Sulfate 1 Emissions from Catalyst-Equipped Vehicles. 75-15-3 Discussion of Safety Requirements for 13 Certification of 1976 Catalytic Vehicles. 75-15-4 Discussion of Anticipated Changes to the 1976 20 and Subsequent Model-Year Assembly-Line Test Procedures. 75-15-5 Reassessment of the Emission Surveillance 25 Program for In-Use Vehicles. 75-15-6 Other Business - 40 a. Executive Session - Personnel & Litigation b. Board Member Reports and Assignments 75-15-7 Remarks from Audience. ITEM NO.: 75-15-2 Progress Report on Technology to Control Sulfate Emissions from Catalyst-Equipped Vehicles. RECOMMENDATION None. Informational Item. SUMMARY Vehicle manufacturers, petroleum companies, catalyst suppliers and the Environmental Protection Agency (EPA) are still actively involved in developing technology to reduce the emission of sulfates from oxidation catalyst-equipped vehicles. However, there has been no new development nor dramatic breakthrough to report since the March 1975 meetings. Concurrent with these developments, investigations are being made to assess whether a hazard to health and property will exist as the population of catalyst-equipped vehicles increases. The EPA is now undergoing an accelerated test program to develop a test procedure and establish a vehicle sulfate emission standard. Notice of Proposed Rule Making is expected to be published in the Federal Register in November 1975. This report limits discussions to development of systems and test procedures for controlling sulfate emissions. ITEM NO.: 75-15-3 Discussion of Safety Requirements for Certification of 1976 California Vehicles. RECOMMENDATION None. Discussion Item. SUMMARY Recent adverse publicity regarding the safety of catalytic converter systems has prompted the staff to investigate if safety hazards do exist. In order not to delay the approval of 1976 model-year catalyst equipped vehicles, the staff has granted limited approval to those manufacturers who employ a catalytic system. If a safety problem does exist, approvals for the remainder of the model year will require the manufacturer to take steps to mitigate the problem. The staff scheduled a workshop with a few selected manufacturers to determine the magnitude of the problem. Data presented by all the manufacturers except one tend to indicate a very low catalyst failure rate. This report summarizes the staff action to date. ITEM NO.: 75-15-4 Anticipated Changes to the 1976 and Subsequent Model Year Assembly Line Test Procedures. RECOMMENDATION None. Discussion Item. SUMMARY Recent experience with 1975 production vehicles has prompted a reevaluation of the assembly line test regulations. This report addresses some of the changes contemplated for the 1976 and subsequent model year. ITEM NO.: 75-15-5 Reassessment of the Emission Surveillance Program for In-Use Vehicles. RECOMMENDATION None. Discussion Item. SUMMARY The Air Resources Board (ARB) has had a vehicle emission surveillance program to determine the effectiveness of exhaust emission systems since 1965. The data from this program were primarily used to set vehicle emission standards and to assess the effectiveness of emission control systems and strategies. The use of these data have since broadened and diversified. They are now also used for the State Implementation Plan, modeling and other inputs. Consequently it is necessary for the ARB to reassess this program to meet all the needs. This reassessment examines the current hot-start 7-mode test versus a hot-start CVS and the cold-start CVS-75 test procedures in the context of setting standard, evaluating effectiveness of emission control programs, and establishing emission factors for inventory. Areas of expansion and new emphasis on surveillance are also discussed. These include catalytic vehicles, heavy-duty vehicles, evaporative control systems, motorcycles, and gaseous-fuel vehicles. The following major recommendations are presented: (1) Replace the hot-start 7-mode with a hot-start CVS test method. (2) Obtain a large data base of in-use vehicle emissions by the cold-start CVS-75 test procedure. (3) Emphasize surveillance of heavy-duty vehicles, evaporative emission systems, motorcycles, and gaseous-powered vehicles. The report of this assessment is attached for review by the Board.