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Page 56 Roadway Pavement Condition The roadway pavements in the study area are beginning to show signs of deterioration, particularly Arch Road,Austin Road and Mariposa Road. This is mainly due to high levels of truck traffic in the vicinity of the Austin Road Landfill project site. The County added an asphalt concrete and geo-textile fabric overlay to Austin Road between French Camp Road and Arch Road a number of years ago. The existing roadway pavements may now require improvements to prevent further deterioration as well as accidents and vehicular damage. Accident Analysis Traffic accident data for the primary roadways providing access to the project site over a three year period from 1996 to 1998 were reviewed (see Table D-1). Analysis of the accident data did not indicate any unusual safety or accident problems. The accident data was extracted from the San Joaquin County annual accident reports. The statewide average for reported traffic accidents on suburban (defined by Caltrans as urbanized areas outside of city areas) two and three lane conventional roadways is 2.51 accidents per Miles Vehicle Miles Traveled(VMT)(State of California, 1999). It is important to note that the accuracy of the Caltrans accident data is limited to the reporting levels of the law enforcement agencies providing accident reports. Caltrans reports that it receives reports on 100 percent of all fatal injuries, 90 percent of injury accidents, and 40 percent of property damage only accidents occurring on state highways. On Austin Road, between Mariposa Road and French Camp Road, 11 accidents were recorded during 1996 through 1998 for a three year average of 3.7 accidents per year. This 5.5-mile roadway segment, with 1.44 accidents per MVMT, exhibits an accident rate lower than the statewide average 2.51 accidents per MVMT. On Mariposa Road, between State Route 99 and Austin Road, 6 accidents were recorded during 1996 through 1998, for a three-year average of 2 accidents per year. This 3-mile roadway segment, with 0.1 accidents per MVMT,exhibits a significantly lower accident rate lower than the statewide average. On French Camp Road, between State Route 99 and Austin Road, 5 accidents were recorded during 1996 through 1998, for a three-year average of 1.7 accidents per year. This 2-mile roadway segment,with 0.62 accidents per MVMT,exhibits a considerably lower accident rate lower than the statewide average. On Arch Road,between State Route 99 and Austin Road, 2 accidents were recorded during 1996 through 1998, for a three-year average of 0.7 accidents per year. This 2-mile roadway segment, with 0.70 accidents per MVMT,also exhibits a considerably lower accident rate lower than the statewide average. Intersection Level of Service Analysis Level of service is the relationship between intersection capacity and the vehicular traffic using the intersection. Level of service for intersections is as defined in the Transportation Research Board's 1994 "Highway Capacity Manual". The designations for traffic level of service (LOS) are the letters "A" through "F". The letter "A" is equivalent to free flow traffic conditions, while the letter "F" represents a condition of significant traffic delays and backups. The letters "B" through "E" represent measures of increasing congestion and delays. The LOS criteria based on traffic delay and volume-to-capacity ratios are shown in Table D-2. S TING . GRAS=ENVIRONMENI`.4LOON UL