CALIFORNIA AIR RESOURCES BOARD
Auditorium, Room 1138
107 South Broadway
Los Angeles, CA
April 23, 1987
87-6-1 Public Meeting to Consider Information Regarding 001
Continued Progress Toward Attainment of the National
Ambient Air Quality Standards for Ozone and Carbon
Monoxide in the South Coast Air Basin.
Introduction and Background - A brief presentation by the ARB
staff of physical and meteorological characteristics of the basin
and a comparison of air quality concentrations with other areas
of the county.
Air Quality Trends - A presentation by the ARB staff of air
quality and emission trends from the mid-1970s to the present,
projections of future emissions, a comparison of trends in
sub-regions of the basin, and trends in population exposure to
unhealthful levels of ozone.
Current Status of Emission Controls - A presentation by the ARB
staff on how well the measures committed to in the 1982 Air
Quality Plan have been implemented.
Potential for Further Emission Controls - Presentations by the
ARB staff on the potential for additional stationary and
transportation source emission reductions. Representatives from
the South Coast Air Quality Management District and Southern
California Association of Governments will participate in these
The ARB staff will also present a Motor Vehicle Emission Control
Plan for further reduction of emissions in the post-1987 time
IN THE EVENT AGENDA ITEM #87-6-1 CANNOT BE COMPLETED APRIL 23,
1987, THE MEETING WILL BE RESUMED AT 8:30 A.M., APRIL 24, 1987.
a. Closed Session
1. Personnel (as authorized by State Agency Open Meeting
Act, Govt. Code Sec. 11126(a).).
2. Litigation (Pursuant to the attorney-client privilege,
Evidence Code Sec. 950-962, and Govt. Code Sec.
b. Research Proposals
c. Delegations to Executive Officer
ITEM NO.: 87-6-1
Public Meeting to Consider Information Regarding Continued
Progress Toward Attainment of the National Ambient Air Quality
Standards for Ozone and Carbon Monoxide in the South Coast Air
Information only. A written report titled the "Post-1987 Motor
Vehicle Plan" will also be presented to the Board.
There are several urban areas in California that are not in
compliance with the NAAQS for ozone and carbon monoxide (CO),
with the South Coast Air Basin (SCAB) having the worst air
quality in the state. Although progress has been made to reduce
the number of exceedances and peak pollutant concentrations in
SCAB, further emission reductions will be necessary if this area
is ever to comply with the ambient standards.
Motor vehicles play a major role in Southern Californians'
lifestyle and air quality. Emissions from motor vehicles have
been reduced 80-90 percent (on a "per mile" basis) since the
early 1960's, but because of continued growth in the basin, they
remain the largest single source of criteria air pollutants.
Emissions of hydrocarbons (HC) and oxides of nitrogen (NOx)
contribute to the formation of ozone, while CO emissions from
motor vehicles are responsible for as much as 90 percent of the
ambient CO concentration in urban areas.
The staff will present an overview of air quality and emission
trends and forecasts for the South Coast Air Basin. A review of
the status of implementation of control measures which are part
of the 1982 SCAB Nonattainment Area Plan will be discussed.
Future plans for continued reduction of air pollutants from
stationary and mobile sources, including transportation controls,
in the post-1987 time frame will be described. A written report,
which describes an updated plan for achieving further emission
reductions from motor vehicles, will be presented. This Post-1987
Motor Vehicle Plan, will describe three strategies to reduce
emissions from motor vehicles: reduction of excess emissions,
more stringent emission standards for new vehicles, and the
promotion of cleaner fuels. In the pre-2000 time period, the
current gasoline and diesel engines will be controlled through
the reduction of excess emissions and more stringent standards
for new vehicles. Beyond the year 2000, further reductions will
be necessary, and the focus will shift to alternate fuels. Staff
is currently working to encourage the implementation of
alternative fuels by the mid-1990's so that the technology will
be in place before the turn of the century. Of the alternative
fuels available, methanol appears to be the most promising. To
ease the introduction of this technology, flexible-fueled
vehicles (i.e., vehicles capable of operating on varying blends
of gasoline and methanol) may be first introduced.