Draft Environmental Impact Report - East Bay Municipal Utility District

Estates Reservoir Replacement Draft Environmental Impact ReportTraffic and CirculationDrive near the Project site, roadway geometry, circulation efficiency, dispersing impacts toresidents and sensitive receptors (schools, recreation areas), and most importantly, truck,vehicle and pedestrian safety. It was assumed that all truck trips would use SR 13 to accessthe site. The recommended truck route plan, shown on Figure 3.6-5 considered thetopography, roadway width, intersection operations and traffic control, and number ofdriveways along the route.The plan shows inbound truck traffic using Moraga Avenue/ Mountain Road to La SalleAvenue, where a SR 13 overcrossing is provided. A traffic signal at the Moraga Avenue/La Salle Avenue intersection would allow trucks to make left-turn movements, although aflagger is needed at the intersection during peak periods (7:00 a.m. - 9:00 a.m. and 4:00 p.m.- 6:00 p.m.), due to the tight tuning radius from Moraga Avenue to La Salle Avenue. Thisflagger would also help left-turning trucks negotiate gaps in southbound traffic. Truckswould then enter the site from the south, turning left into the reservoir site. A flagger wouldbe present at the Project driveway during construction hours.Outbound trucks would be directed to exit the site towards Estate Drive north, and travelon Estates Drive to Moraga Avenue, where they would turn right to access SR 13. As theside-street movement from Estates Drive to Moraga Avenue operates deficiently duringthe morning and evening peak hours, a flagger would be needed at that intersectionduring peak periods (7:00 a.m. - 9:00 a.m. and 4:00 p.m. - 6:00 p.m.).Maximum and average daily volumes on local streets with the above trip generation andtrip distribution assumptions are summarized below in Table 3.6-7. All streets wouldcontinue to operate below their theoretical daily capacity, except for La Salle Avenue,west of Trafalgar Place. The addition of Project traffic to this roadway segment wouldexacerbate an existing deficient condition, resulting in a near-term significant impact,based on the CEQA significance criteria. Estates Drive north of Bullard Drive wouldexperience a traffic increase of about 53 percent on peak days of hauling, while theincrease on a typical (or average day) would be 18 percent.RoadwayTABLE 3.6-7Existing Daily Traffic Volumes Plus Construction TrafficLocationExistingDailyTrafficMaximumAdded DailyTrafficTotalMaximumDaily TrafficAverageAdded DailyTrafficTotalAverageDaily TrafficTheoreticalDailyCapacityA. Estates Drive South of Moraga Avenue 1,411 227 1,638 79 1,490 3,000B. Estates Drive North of Bullard Drive 430 227 657 79 509 1,500C. Estates Drive North of La Salle Avenue 625 200 825 62 687 3,000D. Estates Drive South of Dawes Street 1,117 6 1,123 4 1,121 3,000E. Estates Drive North of Park Boulevard 1,151 6 1,157 4 1,155 3,000F. Dawes Street South of Estates Drive 224 6 230 4 228 1,500G. Bullard Drive South of Estates Drive 217 6 223 4 221 1,500H. La Salle Avenue West of Trafalgar Place 4,393 195 4,588 59 4,452 3,000I. Trafalgar Place South of La Salle Avenue 775 6 781 4 779 3,000Source: Fehr & Peers 2009; Transportation and Land Development, ITE, 2002.Note: Daily capacities taken from Table 13-6 of the Institute of Transportation Engineers) Transportation and Land Development, 2002.sb09_001.doc 3-6.15 7/22/2009