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I I I :1 I I I I I I I I I I I I I I I Nunn as the other source of raw water. There is another deep well (~765') approximately 4 mil,~s south and 4 miles east of Nunn (""'3 miles east of Pierce) into the La~amie/Fox Hills formation which produces 12 gpm. In the past, there has beell considerable discussion and speculation concerning the deep well in NUllO. The well was drilled in 1973 in hopes of obtaining a sufficient supply of good quality water which could be used as a substitute or as a source of blending water for the shallow wells which are very high in nitrates. It was estimated by others prior to drilling that the well could produce 50 to 110 gpm. Based upon completion tests and subsequent operation, the well only produces 12 to 13 gpm. Due to this major difference, the i nf'~rence over the past few years has been that the well was not constructed properly or that the well was improperly designed. However, in the current analysis as part of this study, it has been concluded that the well design and construction were reasonably adequate. Finally, it is concluded that the well yield was over-estimated prior to drilling and the actual yield is very comparable with yields that could be expected for a well into the Laramie/Fox Hills formation in the Nunn area, The other deep wells in the area generally produce between 5 and 15 gpm, The main problem with the quality of the water supply has been the nitrate concentration. The concentration of nitrate in the deep well water has been low, 0.0 to 1,4 mg/l as N03-, which is considerably below the State mandatory limit of 45 mg/l as N03- (10 mg/l as Nitrogen), Table IV-la presents a summary of the results of the water quality analysis made on the wlter supply for the Town of Nunn over the years. The only parameter shown is tle nitrate concentration, since this is the only chemical constituent which is higher than the State standards. The table clearly indicates the problem 15