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4. ENVMONMENTAL ANALYSIS L 4.4 TRANSPORTATION AND CIRCULATION ` TABLE 4,4-1 LEVEL OF SERVICE CHARACTERISTICS FOR UNSIGNALIZED INTERSECTIONS Average Vehicle Delay Level of Service Description (seconds) A Little or no delay 0-10 r. B Short traffic delays >10-15 C Average traffic delays >15-25 D Long traffic delays >25-35 E Very long traffic delays >35-50 F Stop-and-go conditions >50 It is typical on state highways and in Waal areas to require that a level of service of LOS C or ., better be maintained. In urban areas, LOS D is often considered acceptable. The Caltrans Guide for the Preparation of Traffic Impact Studies indicates that Caltrans endeavors to maintain a target level of service at the transition between LOS C and LOS D. The results of the existing intersection level-of-service calculations are shown in Table 4.4-2, and the analysis output is on-file and available for review at the San Joaquin County offices. Levels of service are presented for each intersection approach from which movements are controlled by stop signs; the level of service for the intersection as a whole is not defined because the major street traffic is not required to stop. The levels of service were determined using the computer program Synchro 6,which is based on the 2000 Highway Capacity Manual procedures for calculating levels of service and which is listed in the Caltrans Guide for the Preparation of Traffic Impact Studies as a commonly-used program. The results of the existing road segment level-of-service analyses are shown in Table 4.4-3. The Florida Department of Transportation has published tables correlating peak-hour volumes of roadway segments with levels of service. For this analysis,the table entitled"Fable 4-6, Generalized Peak Hour Two-Way Volumes for Florida's Urbanized Areas"(Florida Department of Transportation, 2002)was used. The table is included in Appendix C. Freeway weaving and ramp junction analyses were performed at the study freeway interchanges. Those analyses evaluated the effect of traffic at the intersections of on/off ramps and mainline freeway segments and determined resulting levels of service at these locations. The analysis was performed using HCS2000 computer program for the future-with-project conditions at the study locations to identify the worst-case conditions based on the projected traffic. The analyses resulted in LOS C or better for all future-with-project conditions. The analysis sheets are on-file and available for review at San Joaquin County offices. RMC Pack Vernalis Quarry Mining and Reclamation Project 4.4-7 ESA/203015 Admhtistrelive Draft Eai March 2004