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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 />CHAPTER IV <br />WATER SUPPLY SYSTEM EVALUATION <br /> <br />A, General <br />The analysis of the Nunn water supply system consists of the <br />evaluation of the source of supply, quality and quantity, an examination <br />of the existing physical conditions of the system, the demands placed <br />on the system, both current and future, and future expansion of the <br />system, both from an improvement standpoint and extension of the present <br />service area. Particular emphasis has been placed on the source of water <br />supply in regard to its quality and quantity as the existing water quality <br />does not meet State standards in regard to nitrate concentrations. <br />B. Water Sources and Quality <br />1. Existing Water Sources <br />In the Town of Nunn and in the surrounding area, practically all <br />of the water for municipal and private use comes from wells which extract <br />groundwater from the shallow alluvial aquifer(s). There are a few wells which <br />have been drilled into the deeper Laramie/Fox Hills formation, Generally, the <br />water pumped from the deep wells drawing from the Laramie/Fox Hills formation <br />is of better quality, with regard to nitrates; however, the yield is typically <br />quite low, in the range of 5 to 15 gpm. This conclusion is based on the <br />examination of the deep wells in the general area. One of the wells in Nunn <br />currently used as a water supply source is a deep well (~800') in the <br />Laramie/Fox Hills formation which yields about 12 gpm. This compares with <br />the yield of about 80 gpm for each of the other two shallow wells used by <br /> <br />14 <br />