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Draft Supplemental Environmental Impact Report Page IV.13-4 <br /> Forward Inc. Landfill 2018 Expansion Project <br /> Table IV.B-1: Level of Service Descriptions <br /> Signalized Intersections <br /> Level of Service Average Control Delay <br /> (seconds/vehicle) <br /> A <_10 <br /> B >10-20 <br /> C >20-35 <br /> D >35-55 <br /> E >55-80 <br /> F >80 <br /> Source: Highway Capacity Manual, Chapter 16 <br /> (Transportation Research Board, 2000) <br /> Table IV.B-2: Level of Service Descriptions r <br /> Unsignalized Intersections <br /> Level of Service Average Control Delay <br /> (seconds/vehicle) <br /> A 0-10 <br /> B >10-15 ' <br /> C >15-25 <br /> D >25-35 <br /> E >35-50 <br /> F >50 <br /> Source: Highway Capacity Manual,Chapter 17 <br /> (Transportation Research Board, 2000) <br /> Signalized Intersection Analysis <br /> Periods of Analysis. During a weekday, traffic flows are typically highest during morning <br /> (AM) and evening(PM)peak periods. Therefore,the potential for a project to adversely affect <br /> the operation of a transportation system is greatest during these peak periods. The proposed <br /> project would operate during both peak periods,therefore, this study focuses on potential <br /> impacts during both the AM and PM peak periods. <br /> Study Intersections. Twelve study intersections were selected for analysis in the traffic study <br /> for the 2018 SEIR, with input from County of San Joaquin staff. The study intersections and the <br /> type of control (signal or stop control)are listed in Table IV.13-3,below. The intersection <br /> numbering corresponds to the locations of the intersections shown in Figure IV.B-1. <br />