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<br />. <br /> <br />. <br /> <br />The other injection reservoirs considered were in the McCracken <br /> <br />Sandstone of Devonian age and the Cutler Formation of Permian-Penn- <br /> <br />sylvanian age. Both reservoirs did not have the capacity of the <br /> <br />Mississippian Limestone and not considered as favorable reservoirs <br /> <br />in the injection scheme. <br /> <br />Turner's cost estimates for well rehabilitation of the existing <br /> <br />well into the Mississippian Limestones at depth 15,000 feet would be <br /> <br />$437,170 at 1975 prices. For rehabilitation of an existing well into <br /> <br />the Cutler Formation at depth 4,700 feet the price would be $172,930. <br /> <br />Pump, surface equipment, and installation would cost $180,000 for <br /> <br />either wel1. <br /> <br />As well as the injection and well data, Mr. Turner's report <br /> <br />included a summary of the regional geology. Most of the geology was <br /> <br />summarized from USGS Prof. Paper 637 Geology of the Salt Anticline <br /> <br />region of Southwestern Colorado. <br /> <br />Inadequacies of the Study: <br /> <br />Since the brine well field has begun operatio~ in ',ovember 1978, <br /> <br />more accurate data on pumping rates and brine properties have been <br /> <br />determined. Mr. Turner did not have this data to develop an injection <br /> <br />rate and reservoir life. The cost of drilling has increased drasti- <br /> <br />cally over the past five years and needs to be reevaluated in more <br /> <br />detail. The other disposal problems were not adequately studied. <br /> <br />The corrosive nature of the brine (as found in operation problems of <br /> <br />the well field) was not addressed. Possible environmental and geologic <br /> <br />hazards were not explained. <br /> <br />00 469 <br />