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Alan Plummer Associates, Inc. <br />Water Master Plan Update 2016 <br /> <br />Table 4-2: 2014 Conservation Plan GPCD Targets <br />Year Target (gpcd) <br />2013 124 <br />2020 116 <br />2025 114 <br />2035 112 <br /> <br />All population growth was added to the growth areas and development areas identified in the <br />2013 Comprehensive Plan. The residential demand associated with additional population <br />growth resulting from the utilization of Conservation Plan projections over the WWMP values <br />the development areas listed as mixed <br />use neighborhoods. Populations associated with proposed developments for which lot/unit <br />counts were known (such as planned apartment complexes) were not adjusted. <br />In addition to residential demands, employment demands (demands associated with business <br />activities) were also calculated. As the employment population was estimated at 76 percent in <br />the WWMP, this ratio was also used for continuity. Furthermore, data from the 2014 Water <br />Conservation Plan suggest that approximately 19 percent of the total demand is commercial in <br />nature. From these two assumptions, as well as the total gpcd values in the Water Conservation <br />Plan, the total demand can be broken into employment and residential categories and also <br />identify gpcd values for each category in future years. Figure 4-1 displays these projected areas <br />on a map along with a table summarizing projected demand growth by development areas, <br />growth areas, and employment areas in each future target year. <br />Population and employment demands were combined and results in the following overall <br />average, maximum day, and peak hour demands for each target year (Table 4-3). <br />Table 4-3: Projected Water Demands <br />Year 2020 2025 2035 <br />5,828 gpm, 6,683 gpm, 7,683 gpm <br />Average Day (AD) <br />Demand (gpm, mgd) <br />8.4 mgd 9.6 mgd (11.1 mgd) <br />Maximum Day (MD) 9,204 gpm, 10,961 gpm, 12,616 gpm, <br />1 <br />Demand (gpm, mgd) <br />13.3 mgd 15.8 mgd 18.2 mgd <br />Peak Hour PH 12,126 gpm, 14,223 gpm, 16,872 gpm, <br />2 <br />Demand (gpm, mgd) 17.5 mgd 20.5 mgd 24.3 mgd <br />MD:AD Multiplier <br />1.58 1.64 1.64 <br />(system wide average) <br />PH: MD Multiplier <br />1.32 1.30 1.34 <br />(system wide average) <br />1 <br /> The MD:AD ratio is 1.51 in all areas except La Cima. The La Cima Development Engineering Report stated the <br />maximum day to average day ratio is 2.92. <br />2 <br /> The PH:MD ratio is dependent upon the diurnal curve assigned to each given node. The exception is the La Cima <br /> <br />Development, whereas the Engineering Report stated the PH: MD ratio is 1.71 within their planned development. <br />4-2 <br />m:\projects\0600\022-01\doc\report\draft\draftmasterplan-v15_hef.docx <br /> <br />