RES 87418 - Laserfiche WebLink

Under terms of contracts between Zone 7 and its retail water suppliers, each retail water supplier may produce a fixed amount of groundwater for use in its service areas independent of Zone 7. The aggregate annual independent quota of Zone major retail water suppliers, which total 6,600 acre-feet, is as follows: City of Pleasanton (maximum of 3,500 acre-feet); California Water Company (3,067 acre-feet); and City of Livermore and Dublin San Ramon Services District (33 acre-feet). The tabulation below shows water production and use from City wells and Zone 7 purchases. Over the ten-year period 1977 through 1986, total water production and use increased at an annual rate of approximately 7.9%. These data also show for the most recent five-year period, 1982 through 1986, that the annual rate of growth was approximately 12.4%. A comparison of total water production and use for the first six months of 1987 (1,814 million gallons ["MG"]) to the first six months of 1986 (1,581.6 MG) indicates an increase of 14.7% in water production and use. City of Pleasanton Water Production and Use (Millions Gallons) Zone 7 Million Year City Wells Purchases Total Gallons/Day 1977 886 997 1,883 5 16 1978 924 1,140 2,064 5 65 1979 994 1,165 2,159 5 92 1980 1,043 1,209 2,252 6 17 1981 1,057 1,361 2,418 6 63 1982 1,144 1,197 2,341 6 41 1983 1,157 1,361 2,518 6 90 1984 1,122 2,117 3,239 8 87 1985 1,141 2,412 3,553 9 73 1986 1,150.2 2,580.2 3,730.4 10 22* 1987' 546.1 1,267.9 1,814 10 02* * January 1 through June 30, 1987. Over the same six-month period in 1986, City well production (478.2 MG) and Zone 7 Purchases (1,103.4 MG) totaled 1,581.6 MG, or 8.74 mgd. Future Water Demand and SUpply. A long range forecast of future water demand and supply to the year 2010 was completed by Zone 7 staff in 1987. Current water demands in 1987 are estimated at 30,000 acre-feet. Based on population growth projections contained in the existing General Plans of the 17