SFPUC 2001 Alameda Watershed Management Plan

III. ENVIRONMENTAL SETTING AND IMPACTSP. CUMULATIVE ANALYSISRegional Park and the Sunol Regional Wilderness with a hiking trail west of Calaveras Road.This trail would pass through secondary Watershed land and the Sunol Valley.3.0 PROGRAM-LEVEL CUMULATIVE IMPACTSThis section discusses the contribution from these planned or reasonably foreseeable projects anddevelopment projects proposed under the Alameda Watershed Management Plan to potentialcumulative impacts in the Management Plan area.3.1 DEVELOPMENT PROJECT IMPACTSConstruction of individual development projects proposed under the Management Plan couldcoincide with other construction projects in the Watershed, contributing to cumulative traffic androadway disruptions, effects on cultural resources, air pollutant emissions, and temporaryincreases in noise levels. Cumulative construction-related impacts in the Watershed woulddepend on the timing and location of individual projects. For a group of projects to generatecumulative construction impacts, they must be coincide with another, both geographically and intiming. Construction-related mitigation measures and management actions presented in this EIRwould reduce these potential impacts of Management Plan implementation to a less thansignificant level. Careful planning and phasing could also reduce and/or avoid these impacts.Alameda County is preparing a Draft EIR, expected to be released in early 2000, that willexamine potential construction impacts of the Sunol Valley Agricultural Enhancement Plan.Implementation of management actions in the Plan, mitigation measures identified in the EIRregarding construction of development projects, and regular agency consultation between theSFPUC, Alameda County, and Santa Clara County would reduce any cumulative constructionimpacts to a less than significant level.No significant cumulative impacts from the projects listed in Section P.2.0 are identifiable at thistime. Alameda County's EIR for the Sunol Valley Agricultural Enhancement Plan will examine,among other things, potential impacts on the Watershed of increased residential development thatcould occur under the proposal, and potential cumulative impacts.3.2 MINING OPERATIONS IMPACTS•Cumulative impacts from Apperson Quarry in combination with the Sunol Valley quarries wouldnot be significant. Unlike the Sunol Valley quarries, Apperson Quarry would not result in loss ofprime agricultural land. The Apperson Ridge Quarry EIR (SMP-17, certified by Alameda Countyin August 1984) identified unavoidable adverse impacts on special-status wildlife and highquality habitat, noise impacts at Maguire Peaks and residences at the end of Welsh Creek Road,and moderate degradation of water and wildlife quality on SFPUC lands. Because of the distancebetween Apperson Quarry and the Sunol Valley quarries, and the lack of significant naturalresource, noise, and water quality impacts of the mitigated Sunol Valley quarries, these impactswould not be cumulative. The future haul route from Apperson Quarry (Calaveras Road) wouldbe the same as the route used by RMC Pacific Materials. Mission Valley Rock Company has anindependent access road at Athenour Way / Andrade Road. Because of the economic competitiveNOP 96.223E: Alameda Watershed Management Plan III.P-6 ESA / 930385January 2001