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proposals, etc. Local roadway improvements, such as the proposed <br />Bristol Street widening, are not specifically addressed in the AQMP. <br />Conformity criteria for local highway projects, such as the Bristol Street <br />widening project, have not yet been developed. <br />In conjunction with the Southern California Association of Govern- <br />ments (SCAG), the South Coast Air Quality Management District <br />(SCAOMD) prepares an annual 'Reasonable Further Progress Report", <br />which evaluates the AQMP's progress toward the reduction and control <br />of pollutant emissions to acceptable levels. This report is presented to <br />the Environmental Protection Agency (EPA) for review. The report <br />describes basin -wide progress in reducing total hydrocarbons (THC) <br />and carbon monoxide (CO) levels. Progress in reducing nitrogen <br />dioxide levels was required in this report until a plan revision was <br />submitted to the EPA in September, 1985. <br />There have• been improvements in air quality despite the growth in <br />population, motor vehicles, and fuel consumption in the four- county <br />basin. Stage I ozone episodes have been declining at a rate of four per <br />year since 1976, with an overall reduction of 33 percent between 1976 <br />and 1985. The improvements can be directly attributed to the control <br />measures required on both stationary and mobile air pollutant sources. <br />One of the most important and significant control measures, an annual <br />vehicle inspection and maintenance program, was signed into law on <br />September 10, 1982. Of the 33 Transportation, Energy, and Land Use <br />Control Measures implemented, the inspection and maintenance <br />program produced the largest cumulative reduction for both THC and <br />CO. This program decreased THC emissions by 14.2 tons per day and <br />was responsible for 86 percent of the total THC emissions reductions. <br />CO emissions were decreased by 95.6 tons per day with this rogram <br />(76 percent of the reductions attributed to control measures).? After <br />the first year of vehicle inspection, the CARS estimated that a 17 <br />percent reduction in CO and THC emissions was achieved as a direct <br />result of this program Based upon the adoption of an annual vehicle <br />inspection and maintenance program, the EPA removed constraints <br />affecting federally funded transportation and sewage treatment projects <br />in California. <br />' Air Ouahty Dieest, July - August 1986, page 10. <br />III -15 <br />75C -86 <br />