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San Joaquin County Community Environmental Setting,Impacts,and Mitigation Measures Development Department Transportation and Traffic periods. Both the Bird Road/Blewett Road and Koster Road/Blewett Road intersections are currently operating at a peak hour LOS "A." Table 3.L-2. Existing Intersection Operations AM Peak Hour PM Peak Hour Intersection Delay(sec) LOS Delay(sec) LOS Bird Road/SR 132 309.7 F 285.2 F Bird Road/Blewett Road 8.6 A 8.7 A Koster Road/Blewett Road 9.2 A 9.1 A Source: Omni-Means 2005. I-5/SR 132 Ramp Junctions Table 3.L-3 presents the existing ramp merge/diverge operations for the southbound I-5 to westbound SR 132 merge and the eastbound SR 132 to southbound I-5 diverge. Only these two ramps were analyzed as they had the most direct relationship to the operations at the proposed SR 132/Bird Road interchange. As shown in Table 3.L-3,both ramps merge and diverge are operating at acceptable LOS`B"or better during both the AM and PM peak hours. Table 3.L-3. Existing 1-5/SR 132 Ramp Junction Operations I-5/Route 132 Study Interchange Junction AM Peak Hour PM Peak Hour ' Ramps Type Density LOS Density LOS SB I-5/WB SR 132 Direct Merge 18.7 B 5.3 A �. EB SR 132/SB 1-5 Direct Diverge 1.7 A 17.1 B Source: Omni-Means 2005. Roadway Segments Table 3.L-4 presents the current roadway segment traffic operations. SR 132 from Bird Road to the end of the four-lane freeway segment east of the I-5/SR 132 interchange currently operates at LOS"A/B"while the two-lane highway segments on SR 132 to the west of Bird Road and further east of the I-5/SR 132 interchange currently operates at LOS "F"during the AM and PM peak hours. As also shown in Table 3.L4,all three non-state highway facilities (Bird Road, Koster Road and Blewett Road)currently operate at LOS "A"during both the AM and PM peak hours(Omni-Means 2005). i. DeSilva Gates Quarry Project Draft Environmental Impact Report 31-5 JSS 05105 05