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<br />Submitted to: State Office of Water Conservation <br />Submitted by: Jean Loose and Charles Johnson <br /> <br />Table 3 below shows a summary of data and calculations using <br />the figure of 30 hand washes per person per shift, with each hand <br />wash using one gallon of water. <br /> <br />TABLE 3 <br /> <br />AREA <br /> <br />STAFF PER <br />24 HOUR PERIOD <br /> <br />GALLONS <br />PER DAY <br /> <br />TOTAL <br />GALLONS <br />PER DAY <br /> <br />Dorms <br /> <br />8 <br /> <br />240 x 11 dorms <br /> <br />2640 <br /> <br />Group Homes <br /> <br />5 <br /> <br />150 x 10 <br /> <br />1500 <br /> <br />TOT AL WATER USED PER 24 HOURS ALL AREAS 4140 <br /> <br />AUTOMATIC FAUCETS USED 1/8 OF THE AMOUNT 517.5 <br /> <br />SAVINGS PER DAY OF 3622.5 GALLONS <br /> <br />Even though this is a water conservation grant, the savings and <br /> <br />conservation is not just about water. When using this much <br /> <br />water, there is a considerable amount of natural gas used to heat <br /> <br />that water. At Grand Junction Regional Center, water is heated <br /> <br />to 140 degrees to prevent Legionnaire's Disease, and then cooled <br /> <br />to 105 degrees for safe use by clients. The Energy Office in <br /> <br />Grand Junction helped us calculate the savings in energy relating <br /> <br />to the amount of water that would be saved. The following are <br /> <br />those calculations: <br /> <br />. Assume 50 degrees temperature of incoming water from <br />water lines. <br />. 50 degrees to 105 degree delivery (minimum) is a change of <br />55 degrees. <br />. 3622.5 gallons savings per day x 55 degrees x 8.31 LB/gal <br />=1,655,633 BTU/day divided by 85,700=19.32 CCF/DAF <br />. BTU/lOO CF of natural gas x 30 days =579. 6 CCF/month <br /> <br />Page 4 <br />