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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />SYNOPSIS. <br /> <br />This feasibility report presents the results of the detailed study <br />of the water supply system of the Town of Nunn, Colorado as performed <br />by Hydro-Triad, Ltd. under contract with the Colorado Water Conservation <br />Board (C.W.C.B.). The sponsoring governmental agency in addition to the <br />C.W.C.B. is the Town of Nunn. <br />Copies of this report are available and can be obtained from the <br />Town of Nunn and the C.W.C.B. upon their approval. <br />The Town of Nunn in Weld County, Colorado currently has a criticoll <br />water quality problem with their existing shallow wells. The town has been <br />informed by the State Department of Health that the town must correct the <br />problem of excessively high nitrates in the raw water supply Or face <br />classification of the water system as non-potable or possibly have the <br />supply shut down. The concentration of nitrates in the raw water supply <br />have varied from about 80 mg/l to 130 mg/l of nitrate (N03-) as compared <br />with the mandatory state standard of 45 mg/l (ppm). <br />Nunn is located about 20 miles north of Greeley, Colorado and 30 miles <br />south of Cheyenne, Wyoming on U.S. Highway 85. The current population of <br />the town is 300 persons with approximately 120 families represented. <br />The present water supply is derived from two groundwater sources; one <br />so~rce is two shallow wells pumping from the South Platte River tributary <br />groundwater (approximately 80 gpm each), and the second source is a deep <br />well (-770') in the Laramie/Fox Hills formation (--12 gpm). The water is <br />chlorinated and pumped to a 50,000 gallon elevated storage tank for distribution. <br />The distribution system consists mainly of cast iron pipe constructed in the <br />