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Environmental Checklist ~~~~~~~ For CEQA Compliance project would also tie into Fairview Street and would not substantially increase wastewater compared to the existing warehouse use. Therefore, wastewater treatment requirements would not be exceeded, and impacts would be less than significant. B. No Impact. No new or expanded water or wastewater treatment facilities would be required to accommodate the proposed project. The proposed project would connect to the existing sewer system at Fairview Street. OCSD, which manages and oversees all wastewater in Orange County, is expected to be able to accommodate the waste water generated by the proposed project. No impacts would occur. C. Less Than Significant Impact. The existing site is mostly impermeable to stormwater due to the impermeable surfaces on site. Currently, stormwater runoff, as sheet flows, is conveyed southerly to MacArthur Boulevard and then easterly to a 10-foot by 14-foot trapezoidal section of the earthen Greenville-Banning Channel (OCFCD Facility Number D03) (MDS Consulting 2007:7). It is finally discharged into Reach 1 of the Santa Ana River near the river mouth at the Pacific Ocean (MDS Consulting, 2007:7). Site drainage after development would be altered. stormwater runoff would be conveyed as sheet flows northerly to Alton Avenue. However, the City has determined and approved that discharge of the proposed project's stormwater into the existing 72-inch storm drain in Alton Avenue is acceptable (MDS Consulting, 2007) and (Chin pers. comm.). Less than significant impacts would occur. D. Less Than Significant Impact. Existing water supplies serving the site are sufficient to meet the needs of the proposed project. The City of Santa Ana is required to evaluate the appropriate level of water reliability sufficient to meet the needs of its various categories of customers (e.g., residential, industrial, etc.) within during normal, dry, and continuously dry years. The California Water Management Planning Act of 1983 requires the City to evaluate the water supply and demand within its service area in the Urban Water Management Plan every five years in the years ending in zero and five (City of Santa Ana 2005:1-1 ). The City receives 36% of its water through water imported by the Metropolitan Water District of Southern California and 64% of its water from groundwater managed by the Orange County Water District (City of Santa Ana 2005:2-2). The Urban Water Management Plan uses historical normal year, wet year, dry year, and then multiple dry and wet years, as well as water usage over time in the service area, to establish a baseline (City of Santa Ana 2005:4-15). It then evaluates present and future conditions of water reliability in the City (City of Santa Ana 2005:4-15). The City used 44,920 acre feet of water in 2005 (City of Santa Ana 2005:4-19). This use includes all types of categories of customers, including large industrial users, municipal uses such as irrigating parks, offices, and residential consumers using water for drinking and landscaping purposes. Using the 2005 projected City population of 350,625, this is approximately 0.13 acre feet per resident in 2005, or approximately 42,360 gallons per resident in 2005 (City of Santa Ana 2005:1-4). The Urban Water Management Plan identifies that the City's demands for water can be met in average, single dry, and multiple dry years through the year 2030 based on current and project water supplies and the demands forecast for normal, a single dry year, and multiple dry year scenarios (City of Santa Ana 2005:4-19). Based on this information and the City's evaluation and planning for reliability of water supplies, no new or expanded entitlements would be required to serve the project site. Therefore, less than significant impacts would occur. E. Less Than Significant Impact. See XVI-B. Alton Court August 2007 Initial Study/Mitigated Negative Declaration 3-40 JB.S 00635.07 75A-106