July 14, 1995
South Coast Air Quality
Management District Board
Upon adoption of the 1994 Air Quality Management Plan (AQMP) in September 1994, the Governing Board directed staff to perform an evaluation of the impacts of the state's long-range mobile source control program provided in the California SIP, the release of the revised on-road mobile source emissions factor program, and the promulgation of the Final Federal Implementation Plan (FIP) by the U.S. Environmental Protection Agency (EPA) relative to the 1994 AQMP control strategy. If necessary, staff would propose amendments to the 1994 AQMP due to the above actions that were anticipated subsequent to the original September 1994 Board approval.
Staff has prepared the attached report to update the Board and the public on the status of the 1994 AQMP. The report summarizes state and federal actions relative to the California SIP adoption, promulgation and subsequent rescission of the California FIP, and the impending release of the enhanced on-road mobile emissions factor program.
Analysis
Since the FIP has been rescinded and a revised on-road mobile emissions factor program has yet to be released, the only substantive changes to the AQMP occurred with the November 1994 approval of the state's long-range mobile source control program. The final California SIP contains 16 on-road and off-road mobile source control measures. In addition, the state Air Resources Board (ARB) approved two statewide stationary control measures (consumer products and pesticides) which replace the control measures provided in the ozone only portion of the 1994 AQMP. The emission reductions associated with the SIP measures achieve the same level of reductions called for in the ozone only portion of the 1994 AQMP.
As discussed in the report, staff evaluated the emission reduction levels achieved by the SIP measures and performed an air quality modeling analysis for 2010 and determined that the SIP measures in conjunction with the 1994 AQMP stationary control measures can demonstrate attainment of the federal ozone air quality standard.
To date, the State has not taken action on the comprehensive AQMP. As such, those control measures which are replaced by the California SIP but contained further emission reductions needed for PM10, will continue to be developed. These control measures will be further evaluated as part of the 1997 PM10 Attainment Demonstration SIP.
Staff has not identified a need to amend the 1994 AQMP due to the state and federal actions that have occurred to date. However, as the U.S. EPA completes its review of the California SIP, approvability issues may be identified which may require revisions to the 1994 AQMP. Staff will continue to work with ARB and the U.S. EPA to address future approval findings and report back to the Governing Board on these issues.
THEREFORE IT IS RECOMMENDED THAT YOUR BOARD
-- Receive and file this report.
Respectfully,
James M. Lents, Ph.D.
Executive Officer
BRW:JPB:HH
Attachments
(hh:aqmp.rev\brdltr.doc)