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O NE B RO A D WA Y P LA Z A P RO J E CT E I R A D DE N DU M CI T Y O F S A NT A A NA 5. Environmental Analysis March 2020 Page 95 Table 13 Proposed Project Water Demand Land Use Unit Water Demand Factor Project DU, capita or Acreage Daily Water Usage (gpd) Office (commercial) 0.09 gpd/sf 2 259,002 sf 23,311 Apartments (high-rise residential) – 402 units 1 110 gpd/capita 3 426 capita 4 46,860 Total Proposed Water Demand 70,171 Total Current Entitled Water Flow (46,621) Project Net Water Demand (Project – Current) +23,550 Notes: 1 Note that the Water and Sewer Study (contained in Appendix C) analyzed up to 415 units. The Proposed Project is 402 units, which would result in reduced impact. 2 Unit Water Demand Factor was taken from the City of Santa Ana Transit Zoning Code EIR (0.09 gpd/sf) 3 Unit Water Demand Factors was taken from the City of Santa Ana Water and Sewer Design Guidelines (110 gpd/capita) 4 Capacity was assumed at 1 person per bedroom (426 capita) for the 402 apartments The Proposed Project would incorporate Mitigation Measure U-7, which requires the developer to pay their fair share amount for the necessary facilities to accommodate project-related water supplies, and Mitigation Measure U-10, which requires the project developer to pay all costs for the construction of a new 8 -inch waterline. The Department of Public Works has reviewed the Water and Sewer Study and determined that with incorporation of identified mitigation measures no new significant impact would result from the implementation of the Proposed Project. Result in a determination by the wastewater treatment provider which serves or may serve the project that it has adequate capacity to serve the project’s projected demand in addition to the provider’s existing commitments? Less Than Significant Impact/No Changes or New Information Requiring Preparation of an EIR. There is a 15-inch sewer line adjacent to the Project Site and running along N. Broadway. Table 14 below outlines the proposed conditions for wastewater service. Table 14 Proposed Project Wastewater Generation Land Use Unit Water Demand Factor 1 Project DU, capita or Square Footage Total Average Wastewater Generation (gpd) Total Peak Flow Wastewater Generation (cfs) 2 Office (commercial) 0.0765 gpd/sf 259,002 sf 19,814 gpd 0.09 cfs Apartments (residential) 127.5 gpd/unit 402 units 3 51,255 gpd 0.24 cfs Total Proposed Wastewater Generation 71,069 gpd 0.33 Total Current Entitled Wastewater Flow (39,628) gpd (0.18) cfs Project Net Wastewater Flow (Project – Current) +31,441 gpd +0.15 cfs Notes: 1 Unit Water Demand Factor was taken from the City of Santa Ana Transit Zoning Code EIR (0.0765 gpd/sf & 127.5 gpd/unit) 2 Peak Flow = 3 * Average Daily Flow 3 Note that the Water and Sewer Study (contained in Appendix C) analyzed up to 415 units. The Proposed Project is 402 units, which would result in reduced impact. 5 - 149