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their treated wastewater stream. At current and anticipated future rates of wastewater discharge,and given current trends, it is anticipated that the future cumulative condition regarding wastewater effluent discharge would continue to degrade water quality in the Sacramento—San Joaquin Delta(Delta).However,wastewater generated by the proposed project would be within the quantities planned for it by the MHMP, for which the Mountain House W WTP has been approved and permitted, and for which future discharges from the W WTP to Old River have been permitted(see Section 4.5,"Public Utilities"). Furthermore,because wastewater from the proposed project would be treated to tertiary levels by the W WTP,because future discharges to Old River from the plant have already been permitted by the Central Valley Regional Water Quality Control Board(RWQCB),and because such permits are designed to avoid significant impacts on surface water quality, the proposed project would not contribute considerably to regional degradation of Delta water quality.Therefore,a less-than- significant cumulative impact would occur with respect to wastewater. Electricity and natural gas demand,regardless of energy source,will increase into the future. At current growth and usage projections,the portion of these resources based on fossil fuels will eventually(in several hundred years)run out. However,adequate electricity and natural gas infrastructure and supplies will be available to serve the project well into the future(see Section 4.5,"Public Utilities"), and when compared to the amount of electricity and natural gas consumed in the region,the proposed project would not contribute considerably to this demand.Therefore, a less-than-significant cumulative impact would occur with respect to electricity and natural gas. 6.3.5 CULTURAL RESOURCES As noted in Section 4.6,"Cultural Resources,"the proposed project site lies in an area known to contain evidence of past human activity ranging from early prehistoric Native American sites to the remains of historic-era agricultural and ranching activities that were characteristic of more modem times.Other adjacent areas,as yet undeveloped and — undisturbed,likely support similar evidence of past human activity. Considerable investigative work has been completed through numerous studies ranging back to 1989.An important feature of investigations of cultural and historic resources is the determination of significance,depending on whether they are cultural or historic resources, and which could involve potential eligibility listing on national/state registers,complete preservation and protection, some form of documentation,and/or curation. Throughout the state,significant cultural and historic resources are frequently being discovered when new projects involving ground disturbance or redevelopment are proposed and evaluated. Proper investigative and documentation protocols are provided through various regulatory processes to ensure that the destruction of these valuable resources,many of which remain unknown today,is avoided.Because the proposed project would include proper investigative and documentation protocols for any cultural resources that could potentially be affected by the proposed project(as required by mitigation in Section 4.6, "Cultural Resources"),the proposed project would not contribute considerably to cumulative impacts on cultural resources,and a less-than- significant cumulative impact would occur. 6.3.6 DRAINAGE The MHMP,the Mountain House Master Drainage Plan,and the MHCIP have programmed a drainage system for the Mountain House community that has been approved and adopted.CEQA documentation for these adopted plans was prepared and demonstrated that these plans would result in less-than-significant drainage and surface water quality impacts with implementation of the policies in these plans and the mitigation measures recommended in this CEQA documentation. The MHMP contains provisions for the management of various construction and drainage control practices involving surface grading, soils, geologic and seismic hazards, storm drainage, flood flow management, erosion control, and protection of receiving-water quality. As noted in Section 4.7, "Drainage,"two main watercourses would potentially be affected by the proposed project; Old River and Mountain House Creek. Neither of the two EDAW College Park at Mountain House Spedrfic Plan III Draft EIR Cumulative Impacts 6-8 San Joaquin County