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<br />4. <br /> <br />Capitol Complex's central mechanical and electrical systems. <br />An estimated 12 people work in this facility on a full time <br />basis. . <br /> <br />Water use at this facility falls into two categories, <br />domestic and cooling. Additionally, a separate meter <br />supplies a back-up boiler which is used during very cold <br />periods during the winter. Public service Company of <br />Colorado is billed for this water use. <br /> <br />WATER BALANCE <br />The types of water use identified at these three facilities <br />include domestic, facility cooling, kitchen, and landscape <br />irrigation. Estimates of water consumption in each of these <br />areas are discussed in the following paragraphs. <br /> <br />Domestic Use - Employees use potable water for drinking and <br />domestic purposes at these facilities. Restrooms located <br />throughout these buildings are equipped with 65 sinks, 66 <br />flush valve toilets and 4 showers. Shower use at these <br />facilities is minimal. Daily water usage per full time <br />employee is estimated to be 11 gallons per day, based on the <br />following assumptions. <br /> <br />Two toilet uses at an estimated 4 gallons per use <br />equals 8 gpd. <br /> <br />One minute of sink use at an average flow rate of <br />3.0 gallon per minute equals 3 gpd. <br /> <br />Total use per employee equals 11 gpd. <br /> <br />with 622 full time employees, working 5 days a week, 50 weeks <br />per year, regular employee domestic use is estimated at <br />1,710,500 gallons per year. Part time employees, and <br />visitors are assumed to use an additional 400,000 per year. <br />Total domestic use is estimated at 2,110,500 gallons <br />annually. <br /> <br />Facilitv Coolinq - The State Power Plant has one of two <br />cooling towers that provides cooling to all of the State <br />Capitol Complex. Information about cooling tower operation <br />was supplied by Lou Drieling. The capacity of the tower is <br />650 tons. A meter has recently been installed on the feed <br />water to the cooling tower, but this will be the first year <br />for monitoring that usage. This report will estimate water <br />use for the cooling tower. This can be compared to actual <br />metered results when they are available. The cooling tower <br />is estimated to operate for 130 days per year, for 11 hours <br />