Draft Environmental Impact Report - East Bay Municipal Utility District

Estates Reservoir Replacement Draft Environmental Impact ReportAnalysis of AlternativesTABLE 4.2Estates Reservoir ReplacementAlternatives of the ProjectComplete Alteration Category Option 4Proposed Project (1,4)(Similar Impacts for Option 5)Schedule and Cost Two new buried tanks at EstatesPreservation Category Option 1 (2, 4) Adaptive Reuse Category Option 2 (3,4)Preserve Estates roof andfountains with new tanks underneath(Similar Impacts for Option 3)Remove Estates roof structure and preserve oneor more fountains with two new tanks underneathConstruction Schedule 2 years, demolition and replacement 3 years, associated with retrofit construction 3 years, associated with retrofit constructionProject Cost $15 Million $21 Million $16 MillionPotential Environmental ImpactsVisual Quality Less Than Significant - With Mitigation Less Than Significant - With Mitigation Less Than Significant - With MitigationGeology, Soils, Seismicity Less Than Significant - With Mitigation Less Than Significant - With Mitigation Less Than Significant - With MitigationBiological Resources Less Than Significant - With Mitigation Less Than Significant - With Mitigation Less Than Significant - With MitigationCultural Resources Significant/Unavoidable -With Mitigation Less Than Significant Significant/Unavoidable -With MitigationTraffic and Circulation Significant/Unavoidable -With Mitigation Significant/Unavoidable -With Mitigation Significant/Unavoidable -With MitigationAir Quality Less Than Significant - With Mitigation Less Than Significant - With Mitigation Less Than Significant - With MitigationGreenhouse Gases andClimate ChangeLess Than Significant - With Mitigation Less Than Significant - With Mitigation Less Than Significant - With MitigationNoise and Vibration Significant/Unavoidable -With Mitigation Less Than Significant - With Mitigation Significant/Unavoidable -With MitigationNotes: 1. Option 4 (Complete Alteration) described in the 2008 RHAA Concept Design Report (updated 2009)t; also the preferred landscape plan and alternative.2. Option 1 (Preservation) described in the 2008 RHAA Concept Design Report (updated 2009).3. Option 2 (Adaptive Re-Use) described in the 2008 RHAA Concept Design Report (updated 2009).4. Dingee Reservoir will be removed from service once the replacement Estates Reservoirs are constructed and in service.sb09_001.doc 4-10 7/23/2009