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City of Santa Ana Environmental Checklist over the next 20 years due to minimal growth combined with water use efficiency measures and the increased use in recycled water. Projects have been identified by the City to improve water supply reliability and enhance operations include replacement of sewers, water mains, pump stations, chlorinators and improvement project SCADA systems. Therefore, the proposed project would not result in the need for expansion or construction of new water treatment facilities and impacts would be less than significant. Wastewater. The City's Sewer Master Plan shows that the OCSD sewer hunk line within South Sullivan Street was developed in the 1950s, Wastewater from the project site would be transported via the existing OCSD trunk line south to be treated at OCSD's reclamation plant in Fountain Valley. This wastewater treatment facility is currently undergoing capacity enhancement projects in order to comply with secondary treatment standards required by the EPA under a Federal Consent Decree. The facility currently treats an average of 97 mgd of wastewater and is upgrading to a total design capacity of 180 mgd (OCSD 2010). As identified by the City's Sewer Master Plan, the sewer line serving the project site has existing flows that range between 50 and 75% depth to diameter ratio, which is dependent upon dry or wet weather flows. The Master Plan shows that there are no planned capital improvements for the sewer line within South Sullivan Street. According to OCSD Ordinance No OCSD-35, a church building is assumed to generate 20 percent of what a single family residence generates per 1,000 square feet of building space. Given that a single family residence generates approximately 253 gpd, a church facility would generate 20 percent of 253 gpd per 1,000 square feet of building space (Covarrubias pers. comm.). Therefore, a church facility would generate approximately 50.6 gpd per 1,000 square feet of building space. Table 3-23 provides a comparison of the existing wastewater generation and the anticipated wastewater generation using the OCSD's generation factors. The proposed project would generate approximately 433 gpd of wastewater which is approximately 155 gpd more than the existing conditions. This equates to a total of approximately 0.49 afy of wastewater which is approximately 0.18 afy more than the existing conditions. As described below under XVil.e., the Fountain Valley wastewater treatment facility currently processes 97 mgd and is anticipating to upgrade to 180 mgd. The increase of 155 gpd, or 0.000155 mgd, associated with the proposed project would represent less than 0.01% compared to existing treated wastewater levels and would not be substantial in comparison to the treatment design of the plant or the expected increase in capacity. As such, the increase in wastewater generation associated with the project would not result in the construction of new or expanded facilities, and impacts would be less than significant. Table 3.23. Historic and Projected Wastewater Generation for Church Building Average Flow Average Flow Average Flow Size(gsf)t (gpd) (gpm) (afy) Existing 5,500 278 0.19 0.31 Proposed 8,5512 433 0.30 0.49 Difference 3,051 155 0.11 0.18 Notes: 1 gsf = gross square feel. Proposed gsf include first floor level kitchen and restrooms, and all second floor areas except the deck and hallway as identified in Table 2-2. It does not include areas for parking or courtyard or landscaped areas. Source: OCSD 2000. The Bat Nha Buddhist Meditation Center 3-92 fine 2013 Initial Study/Mitigated Negative Declaration ICF 00215.12 31C-147