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W OnARa <br /> &CURRAN <br /> 3.1.2 Project Water Demand Projections <br /> 3.1.2.1 Baseline Demands <br /> The Project site is currently mostly undeveloped and/or agricultural land. There are a few single-family residences, a <br /> horse ranch and other agriculture-related buildings located on a few areas of the Project site. The Project site also <br /> contains the Central Drainage Ditch, a long agricultural ditch that bisects the Stewart Tract, along with a small pond <br /> located near Paradise Cut. <br /> Despite some existing water demand at the Project site, proposed Project demands were compared against a baseline <br /> that assumes no existing water demand at the Project site.This approach is consistent with the approach taken in the <br /> 2002 WSA for River Islands development and is the most conservative method for estimating demands for the WSA <br /> as it applies the lowest baseline for existing usage in the Project area. <br /> 3.1.2.2 New Project Demands <br /> Anticipated Phase 2 Project construction, detailed by land use categories, is provided in Table 13. As shown, the <br /> Project will add over 10,000 new residential units and nearly 500 acres of new commercial, institutional, and <br /> landscape/open space development,which translates to a total projected water demand of 3,798 AFY at buildout. <br /> Table 13: Project Phase 2 Water Demand Projections by Land Use <br /> Land Use Category Residential Project Water Demand Total Demand <br /> Units(units) Area(acres) Factor (gpd) <br /> Low Density Residential 4,061 - 315 gpd/DU 1,279,215 <br /> Medium Density Residential 3,150 - 235 gpd/DU 740,227 <br /> High Density Residential 3,515 - 135 gpd/DU 474,552 <br /> Total Residential 10,726 - - 2,493,994 <br /> Commercial' - 135.6 860 gpd/acre 116,609 <br /> Schools - 109.7 1,500gpd/acre 164,550 <br /> Parks and Open Spacez - 211.5 2,450gpd/acre 518,198 <br /> Roadway Landscape Areas3 - 39.7 2,450 gpd/acre 97,228 <br /> Total 10,726 496 3,390,578 <br /> otal Project Demand(AFY) 3,798 <br /> Notes: <br /> 1. Includes the planned River Islands Town Center and Employment Center. <br /> 2. Includes only irrigated parks and open space areas. <br /> 3. Includes only irrigated roadway landscape areas. <br /> Landscape irrigation for the planned Town Center, Employment Center, schools, parks, open spaces, and roadway <br /> landscape acres will be served by non-potable supplies. Table 14 provides a breakdown of the non-potable demands <br /> compared to total demands. It is anticipated that approximately 760 AFY(or nearly 20 percent) of the Project's 3,798 <br /> AFY total demand will be met by non-potable supplies. <br /> Califia(0011533.00) 32 Woodard&Curran, Inc. <br /> River Islands Phase 2 Development Water Supply Assessment September 2020 <br />