Laserfiche WebLink
WOODARD <br /> &CURRAN <br /> I WATER DEMAND <br /> This section discusses the City's water demands and those anticipated for the Project, including the assumptions and <br /> methodology used to estimate the existing and projected water demand. <br /> 3.1 Future Water Demands <br /> This section presents the projected water demands in 5-year increments during a 20-year planning horizon for the <br /> proposed Project.The water demand factors that serve as the basis for the assessment are described below in Section <br /> 3.1.1. <br /> 3.1.1 Water Demand Factors <br /> Projected water demand factors are presented in Table 12.Water demand factors were provided by the City in August <br /> 2020 and are consistent with those used in the City's updated demand projections. Initial development of this WSA <br /> included using published demand numbers based on the 2019 WSMP. After discussions with the City, it was <br /> determined that new, more updated numbers would be used since updated demand projections were under <br /> development for preparation of the City of Lathrop 2020 UWMP. These updated demand projections are based on <br /> meter readings of thousands of homes over the past several years and are included in Appendix B. <br /> Water demand factors of 315, 235, and 135 gpd per dwelling unit are used for Low, Medium, and High Density <br /> Residential land use categories, respectively.This is consistent with the water demand factors used by the City in their <br /> updated demand projections for residential development in River Islands. A water demand factor of 860 gpd/acre is <br /> used for the Town Center and Employment Center,consistent with the Commercial land use water demand factor used <br /> in the City's updated demand projections. A water demand factor of 1,500 gpd/acre is used for Schools, and 2,450 <br /> gpd/acre is used for Parks and Open Space and for Roadway Landscape Area land uses, also consistent with the <br /> water demand factors used in the City's updated demand projections for the River Islands development. <br /> Table 12: Project Water Demand Factors <br /> Residential Density Water Demand <br /> Land Use Category DU/acre Factor <br /> Low Density Residential 1.0-9.0 315 d/DUZ <br /> Medium Density Residential 9.0-15.0 235 pd/DU3 <br /> High Density Residential 15.0-35.0 135 pd/DU4 <br /> Commercial' - 860 gpd/acres <br /> Schools - 1,500 pd/acre6 <br /> Parks and Open Space - 2,450 gpd/acres <br /> Roadway Landscape Area - 2,450 pd/acre$ <br /> Notes: <br /> 1. Includes the planned River Islands Town Center and Employment Center. <br /> 2. Water demand factor is modified from the City's updated demand projections (August 2020) (Appendix B) for Low Density <br /> Residential land use to account for efficiencies associated with new construction in the River Islands area. <br /> 3. Water demand factor is modified from the City's updated demand projections (August 2020) (Appendix B)for Medium Density <br /> Residential land use to account for efficiencies associated with new construction in the River Islands area. <br /> 4. Water demand factor is from the City's updated demand projections(August 2020)(Appendix B)for High Density Residential land <br /> uses. <br /> 5. Water demand factor is from the City's updated demand projections(August 2020)(Appendix B)for Commercial land uses. <br /> 6. Water demand factor is from the City's updated demand projections(August 2020)(Appendix B)for Schools. <br /> 7. Water demand factor is from the City's updated demand projections(August 2020)(Appendix B)for Parks and Open Space land <br /> uses. <br /> 8. Water demand factor is from the City's updated demand projections(August 2020)(Appendix B)for Street Landscape Area. <br /> Califia(0011533.00) 31 Woodard&Curran, Inc. <br /> River Islands Phase 2 Development Water Supply Assessment September 2020 <br />