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Grand Avenue Widening Project Environmental Impact Report Section 3.0 <br />Figures 3.5-3 and 3.5-4 show the existing intersection turning volumes for the seven signalized <br />intersections on the project segment of Grand Avenue, for the AM and PM peak hours, respectively. <br />The busiest intersection is Seventeenth Street with approximately 9,500 and 10,300 vehicles <br />traversing this intersection in the AM and PM peak hours, respectively. Approximately 8,200 and <br />10,200 vehicles traverse the Fourth Street intersection during the AM and PM peak hours, <br />respectively. In general, these data indicate that peak hour volumes on the project segment of <br />Grand Avenue are generally heavier in the afternoon than in the morning. <br />Existing Levels of Service (LOS) <br />Table 3.5-1 summarizes the existing LOS for the three midblock locations on the project <br />segment of Grand Avenue. As shown, based on the daily volume/capacity ratios, all study <br />roadway sections currently operate at LOS D or better. Refer to Section 3.5.3 (Methodology <br />Related to Transportation) for a detailed explanation of LOS. <br />TABLE 3.5-1 <br />ROAD LEVEL OF SERVICE SUMMARY <br />FOR EXISTING CONDITIONS <br />Road Section <br />Daily <br />V/C <br />LOS <br />Grand Avenue: <br />ICU <br />LOS <br />South of Seventeenth Street <br />0.46 <br />A <br />South of Fruit Street <br />0.85 <br />D <br />North of First Street <br />0.81 <br />D <br />Table 3.5-2 summarizes the existing intersection capacity utilization (ICU) values and <br />corresponding LOS for the seven signalized intersections on the project segment of Grand Avenue. <br />As shown, based on the ICU analysis using existing AM and PM peak hour turning volumes and <br />existing intersection lane geometry, all seven intersections operate at acceptable LOS during the <br />AM peak hour. However, the Fourth Street intersection operates at LOS E during the PM peak hour. <br />The ICU worksheets used in the analysis are provided in Appendix A of the Traffic Study. <br />TABLE 3.5-2 <br />INTERSECTION LEVEL OF SERVICE SUMMARY <br />FOR EXISTING CONDITIONS <br />Intersection <br />AM Peak Hour <br />PM Peak Hour <br />ICU <br />LOS <br />ICU <br />LOS <br />Seventeenth Street <br />0.78 <br />C <br />0.80 <br />C <br />I-5 Northbound Ramps <br />0.59 <br />A <br />0.61 <br />B <br />Santa Ana Boulevard/1-5 HOV Ramps <br />0.59 <br />A <br />0.76 <br />C <br />Fruit Street <br />0.56 <br />A <br />0.75 <br />C <br />O.C. Register Driveway <br />0.49 <br />A <br />0.55 <br />A <br />Fourth Street <br />0.83 <br />D <br />0.97 <br />E <br />First Street <br />0.59 <br />A <br />0.71 <br />C <br />F: IPROJ-ENMGrand eirlNew Text - GrandlSection 3 SplitlSection 3.5.doe Page 3.5-4 <br />