CALIFORNIA AIR RESOURCES BOARD
Auditorium, First Floor
400 "P" Street
June 8, 1989
89-10-1 Public Hearing to Consider a Report Regarding 001
Motor Vehicle Toxics: Assessment of Sources,
Potential Risks and Control Measures (Please note
the change in meeting time from the time stated
in the public hearing notice for this item.)
89-10-2 Public Hearing to Consider the Adoption of 067
Amendments to Regulations Regarding Exhaust
Emission Standards, Test Procedures and Durability
Requirements Applicable to Passenger Cars and Light-
Duty Trucks for the Control of Hydrocarbon, Carbon
Monoxide and Benzene Emissions.
89-10-3 Public Hearing to Consider the Adoption of Area 295
Designation Criteria Pursuant to the California
Clean Air Act of 1988.
PUBLIC HEARING TO CONSIDER THE ADOPTION OF AMENDMENTS TO
REGULATIONS REGARDING EXHAUST EMISSION STANDARDS, TEST PROCEDURES
AND DURABILITY REQUIREMENTS APPLICABLE TO PASSENGER CARDS AND
LIGHT-DUTY TRUCKS FOR THE CONTROL OF HYDROCARBON, CARBON MONOXIDE
AND BENZENE EMISSIONS.
The staff recommends that the Board adopt amendments to the
exhaust emission standards and test procedures applicable to
passenger cards and light-duty trucks. The staff also recommends
that the Board adopt amendments to the current AB 965 offset
procedures and in-use recall procedures.
Most new passenger cars and light-duty trucks ("light-duty
vehicles") sold in California are currently certified to exhaust
emission standards for oxides of nitrogen, hydrocarbon (HC) and
carbon monoxide (CO) which are applicable for 50,000 miles. At
this time, the use of available technology permits manufacturers
to achieve HC and CO exhaust emission levels which are
significantly lower than the current standards for these
In addition, the current 50,000 mile durability requirement does
not adequately represent in-use conditions, since the average
light-duty vehicle accumulates over 100,000 miles in its total
life. In fact, motor vehicles with over 50,000 miles accumulated
account for nearly 70 percent of vehicular emissions in this
state. Manufacturers have the ability to design and produce more
durable emission control systems which comply with emission
standards for at least 100,000 miles.
For these reasons, staff proposes the adoption of more stringent
HC and CO exhaust emission standards for the current 50,000 mile
durability period and equally stringent 100,000 mile HC and CO
exhaust emission standards for all light-duty vehicles.
Implementation of the exhaust emission standards would begin in
the 1993 model year. Certification compliance with the new
standards would be required for 40 percent of the fleet in the
1993 model year, 80 percent in the 1994 model year and 100
percent in the 1995 model year. Under the proposal, in-use
compliance requirements would be less stringent for the first two
years of certification to the new standards.
Staff also proposes revisions to two aspects of the current
certification test procedures. First, in order to ensure that
the certification data submitted is representative of vehicles
sold in California, manufacturers would be required to use
California configuration durability vehicles. Currently,
manufacturers may carryover data from federal durability
vehicles. The differences between federal standards and the
proposed California standards would make the federal data
nonrepresentative of vehicles designed to meet the state
standards. Second, in order to ensure that all light-duty
vehicles have the ability to meet California's Smog Check
requirements, manufacturers would be required to demonstrate
compliance with the Smog Check test at the time of certification.
Currently, a few vehicle models, because of their design
calibrations, may not meet the requirements of the Smog Check
test even though the vehicles may meet more stringent new vehicle
This proposal would also revise two aspects of the current AB 965
program. First, the emission credits which manufacturers may use
would be reduced by 50 percent, thereby limiting the usage of the
program. Second, because this proposal would reduce the HC
emission standard below the federal level, an additional offset
procedure would be implemented for HC emissions.
Finally, this proposal would permit in-use recall testing of
light-duty motor vehicles through 75,000 miles.
SUMMARY OF IMPACTS OF PROPOSED ACTION
The staff estimates that the proposed regulations will result in
a statewide emission reduction of 70 tons/day HC and 1000
tons/day CO in the year 2010. The proposed regulations will
result in an estimated increase of $65 per vehicle, with a cost
effectiveness of $1.20 per pound of HC reduced, $0.10 per pound
of CO reduced and a cost of $4-31 million per cancer reduced.
Public Hearing to Consider the Adoption of Criteria for
Designating Areas of California as Attainment, Nonattainment, or
Unclassified for State Ambient Air Quality Standards as Required
by the California Clean Air Act of 1988.
The staff recommends that the Board adopt the proposed
The California Clean Air Act of 1988 (the "Act") requires the
Board to develop criteria for designating areas as attainment,
nonattainment, or unclassified for pollutants with state
standards listed in Section 70200, Title 17, California Code of
Regulations (CCR). The pollutants affected are: ozone, carbon
monoxide, nitrogen dioxide, sulfur dioxide, suspended particulate
matter (PM10), sulfates, lead (particulate), hydrogen sulfide,
and visibility reducing particles. Although the Act does not
impose a specific deadline for adoption of the criteria, areas of
the state must be designated pursuant to the criteria by
September 30, 1989.
The staff proposes that the criteria be adopted as regulation in
the CCR. The regulations would specify the data to be used, the
geographic extent of the areas to be designated for the various
pollutants, and how data will be used to determine attainment,
nonattainment, and unclassified designations. The regulation
also requires an annual review of the designations and
consideration of requests for revisions of specific designations.
As required by the Act, the proposed regulation was developed in
consultation with the public and reflect consideration of all
comments received during the public consultation process.