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San Joaquin County Community Environmental Setting,Impacts,and Mitigation Measures Development Department Public Services and Utilities the project area, act to prevent runoff flows from entering the project area from off-site. Thus,drainage flows on-site are derived only from runoff in the project area. Because the Project is designed to retain on-site drainage in the settling ponds (see the"Environmental Commitments-General Commitments" section of Chapter 2, "Project Description,"of the EIR) and all runoff at the project site would be contained on-site during the operation and reclamation periods, the proposed Project would not substantially alter the drainage patterns of storm drainage systems. There would be no impact to existing off-site flood control facilities in the vicinity of the Project. No mitigation is required. Impact PUB-9: Use Substantial Amounts of Fuel or Energy, Require a Substantial Increase in Demand upon Existing Sources, or Require Development of New Sources of Energy (Less than Significant) Electricity needs of the project site would be provided by PG&E. Currently,the proposed Project is serviced by existing electrical power. Some of the power lines could be displaced by the proposed mining operations. If this were the case, electrical lines would need to be relocated and rerouted at the operator's expense. Relocating the electrical facilitates would likely not result in service interruptions to nearby users and would not create a need for substantial modifications to existing service. Additionally,any nearby users with the potential to be affected by such activities would be notified prior to relocations of the electrical facilities. • This impact is considered less than significant. No mitigation is required. It is assumed that development of the site in accordance with the operations plan ., would require extension or relocation of electrical and natural gas facilities to serve the site. Specific facility and service needs are determined by PG&E, following submittal of a formal service request to PG&E. r Because the amount of electricity used by the various types of equipment and machinery at the site would depend on a variety of factors, such as energy efficiency,hours of operation,and types of construction materials being r produced(e.g.,gravel, concrete,or asphalt), is it difficult to precisely assess the energy demand over the life of the project. Therefore,this EIR will not speculate on the estimated energy consumption of the project. The Project's impacts related to an increased demand for electrical or natural gas service is considered less than significant. No mitigation is required. r •" DeSilvs Gates Quarry Project Draft Environmental Impact Report 3.K-11 As 05105.05 r