Item 26 - Public Hearing Vista Heritage Charter School (601 North Fairview Street)

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Vista Charter Public Schools District Office and Outdoor Space Project CEQA Exemption 15183 4.18.2 Project Analysis Although the project would redevelop the shared surface parking lot in the southern portion of the site into an outdoor community garden, play field, and play yard, the proposed project would not require extensive excavation that could uncover previously undiscovered tribal cultural resources. Typical excavation depth would be a maximum of four feet for the majority of the site with the deepest excavation of approximately eight feet for an underground infiltration chamber related to stormwater improvements. No new or substantially more severe impacts would occur compared to the determinations of the GPU EIR, and no new mitigation measures are required. 4.18.3 Conclusion Overall, the project is consistent with the General Plan Update. The proposed project would not have any specific effects which are peculiar to the project or the site. There are no project -specific impacts or potentially significant off -site or cumulative impacts the GPU EIR failed to analyze, and there are no new significant or substantially more severe tribal cultural resource impacts than anticipated by the GPU EIR. Applicable GPU EIR Regulatory Requirements/Mitigation Measures: No GPU EIR regulatory requirements or mitigation measures apply. 4.19 Utilities and Service Systems 4.19.1 GPU EIR Findings The GPU EIR concluded that increased sewer flow from buildout of the General Plan Update would require pipe upsizing to meet the demands of new residential and commercial uses; however, the Orange County Sanitation District Master Plan accounts for trunk line improvements and the Orange County Sanitation District (OCSD), in general, has a functioning and effective process in place to ensure the regional sewer infrastructure is able to support future developments in the City. Further, OCSD confirmed that wastewater generated by buildout of the General Plan Update would be adequately treated by Treatment Plant No. 1. The GPU EIR also concluded sufficient Orange County Water District water supplies and Orange County Public Works stormwater drainage facilities would be available to serve the full General Plan Update buildout from existing entitlements and resources, and new or expanded entitlements would not be required beyond those improvements already planned for the City. 4.19.2 Project Analysis Based on wastewater generation rates for commercial uses in the West Santa Ana Focus Area, contained within Volume III, Appendix H-a, of the GPU EIR, the proposed project would generate approximately 2,036 gallons of wastewater per day.30 The proposed project would connect to existing wastewater infrastructure, which would have the capacity to serve the project demand in addition to existing service commitments and would not require the expansion of existing facilities. Compliance with RR U-2 would ensure that OCSD connection fees are paid in accordance with Ordinance No. OCSD-40. Additionally, as discussed above, runoff from the proposed project is currently collected by stormwater drainage facilities in the surrounding roadway. The proposed project would implement BMPs contained in the WQMP to capture and infiltrate stormwater runoff. 30 Based on a rate of 2,262 gallons of wastewater per day per acre for a 0.9-acre site. The GPU EIR separated land uses into either residential or commercial in order to determine average wastewater generation. While it is acknowledged that the proposed project would involve office use, commercial rates were deemed most appropriate in order to compare the proposed project to the analysis contained within the GPU EIR. Dec I y ouncil 26 —115 1/16/202 e 55