State of California AIR RESOURCES BOARD Bay Area Air Pollution Control District 939 Ellis Street San Francisco, CA February 21, 1973 9:30 a.m. AGENDA 1. Approval of Minutes of February 7, 1973 Meeting. 2. NOx Control Devices with VSAD. 3. Consideration of Applications for Approval of NOx Control Devices: a. Carter Carburetor b. STP Corporation c. Dana Corporation 4. Consideration of Request for Exemption of 1966-70 Vehicles Fitted with Air Quality Product Device. 5. Report on Survey Adjustment Practices of New Car Dealers. 6. Consideration of Board Policy Concerning the Surveillance of New Vehicles for Compliance with End of Assembly-Line Requirements. 7. Consideration of Local District Agricultural Burning implementation Plans. 8. Applications for Extension of Open Burning at Disposal Sites in Glenn and Siskiyou Counties. 9. Legislation Committee Report on Transportation Control Plan. 10. Request from Solano County for the Exemption of 1955-65 Vehicles in the Sacramento Valley Portion of the County from the Requirement for Exhaust Retrofit Devices. 11. Other Business. 12. Remarks from Audience - End of Morning and Afternoon Sessions. ITEM Applications for Exemption or Accreditation of Vacuum Spark Advance Disconnect (VSAD) type devices for 1966 through 1970 model vehicles. DISCUSSION In subsequent agenda items during todays meeting the use of VSAD type exhaust control devices will be considered by the Board. Carter Carburetor is seeking accreditation and Air Quality Products is requesting an exemption. On August 23, 1972 the Board adopted a policy in opposition to VSAD only as a means of controlling NOx for 1966-70 vehicles. If this policy is continued the Board would not be able to act formally on the pending requests by Carter Carburetor and Air Quality Products unless the Board found these devices were not VSAD only. In the cases of Carter Carburetor and Air Quality Products the devices provide some degree of protection against exhaust valve effects by restoring normal vacuum advance at speeds above 65 mph. Also the Carter system includes some protection against overheating. However, these devices essentially remain VSAD systems since there is little vacuum spark advance above 65 mph. A November 21, 1972, summary staff report is resubmitted for information. OPTIONS 1. Continue the Board position against exemption or accreditation of devices which are simple VSAD or essentially simple VSAD. 2. Accredit or exempt VSAD devices, including simple VSAD, which comply with emissions control requirements. 3. Establish a separate classification for devices that include VSAD and which would be eligible for exemption. ITEM Carter Carburetor Division, ACF Industries, Application for Accreditation of an NOx Control Device for 1966-1970 Model-Year Vehicles. RECOMMENDATION Deny Carter Carburetor Division's application for accreditation. SUMMARY Carter Carburetor Division has submitted an application for accreditation of its device for NOx exhaust emission control for 1966-1970 model-year vehicles in classes (b) through (f). The device uses vacuum spark advance disconnect plus engine adjustments. The system includes features intended to protect the engine from excessive exhaust gas temperatures. The staff finds that the applicant's device meets the emission standards and general standards. However, the system has potential for adverse effects on overheating and valves. The present policy of the Board is in opposition to VSAD only as a means of reducing NOx in 1966-70 vehicles. Also, the temperature sensor may deactivate the system much of the time in warm weather. ITEM Dana Corporation's Application for Accreditation of an NOx Control Device for 1966-70 Model Class (a) Vehicles. RECOMMENDATION Deny Accreditation. SUMMARY Dana Corporation has re-applied for accreditation of its NOx control device for Class (a) vehicles. The initial application was denied because of the Board's reservations concerning drive ability and increased hydrocarbons. The device has been modified and additional test data submitted. this modification resulted in satisfactory drive ability. However, the hydrocarbon increase is still significant; Dana's fleet average increase in hydrocarbons was 17.2%. Successive confirmatory tests conducted by the ARB Laboratory on one vehicle, a Volkswagen, showed an increase in hydrocarbons of 24.4%, 64%, and 40% respectively. ITEM Request of Air Quality Products (AQP) for exemption for vehicles equipped with its modified emission control system for 1966-70 light-duty vehicles. (See AQP letter attached). DISCUSSION Section 39177 of the Health and Safety Code provides: "The Board may exempt classifications of motor vehicles for which accredited devices were not intended or are not available, and motor vehicles whose emissions are found by appropriate tests to meet state standards without additional equipment, and motor-driven cycles, implements of husbandry, and vehicles which quality for special license plates under section 5004 of the Vehicle Code." Two problems are present in considering the AQP device under this Section. First, is the AQP device "additional equipment"? Second, can a class of vehicles be exempt? ITEM Survey of Adjustment practices of Manufacturers and New Car Dealers. RECOMMENDATION None. (this is related to agenda item concerning Proposed Changes in Engine Adjustment Policy for Surveillance of New Vehicles for Compliance with End of Assembly-Line Requirements). SUMMARY The staff has conducted a survey of new car dealers to determine if new car engines are being adjusted to manufacturers specifications. The survey shows some improvement in adjustment practices since the last survey in 1971. ITEM Proposed Changes in Engine Adjustment Policy for Surveillance of New Vehicles for Compliance with End of Assembly-Line Requirements. RECOMMENDATION Adopt proposed policy. SUMMARY The assembly-line test procedures require all vehicles to be adjusted to the manufacturer's specifications for delivery to customers prior to emission testing. To assure compliance with this requirement, the Executive Officer requested each manufacturer to submit his plan of engine adjustment practices. These plans have been evaluated and a proposed policy developed. ITEM Approval of Agricultural Burning Implementation Plans. CONCLUSION 1. Ten of the fifteen districts have submitted plans which are consistent with the Board's Agricultural Burning Guidelines (see Resolution 73-1a). The staff recommends approval of these plans. 2. Five of the fifteen districts have submitted plans which require adjustments to be consistent with the Board's Agricultural Burning Guidelines (see Resolution 73-2b). The staff recommends conditional approval of these plans. 3. Seven Air Pollution Control Districts have still not submitted agricultural burning implementation plans as required by the Board's Agricultural Burning Guidelines. these districts were advised by letter to have their plans submitted for consideration by the Board on February 21, 1973. As of February 14, 1973, plans have not been received from these districts. Public hearings should be planned to consider adoption of agricultural burning implementation plans for these districts by the Board if necessary. The staff recommends adoption of Resolution 73-6. ITEM Staff Report on Applications from Cities and Counties to Continue Open Burning at Waste Disposal Sites. INTRODUCTION As of December 6, 1972 meeting, the Air Resources Board approved time extension to use open fires for the purpose of disposal of solid waste for 199 city and county disposal sites. the board has received since then requests to extend the previously approved extensions in Glenn and Siskiyou Counties. The staff recommends denial of the additional extensions in both counties.