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<br /> <br /> <br /> <br /> <br />1 <br /> <br /> <br />1 <br />i <br /> <br /> <br /> <br /> <br /> <br />t <br /> <br /> <br />RGI N 04548198 <br />Holnam, Inc. <br />January 27,1999 <br />Page 7 <br />from a known source was injected into each of the wells to allow additional development by swabbing and <br />bailing. Layne also developed well MW-7 by pumping with slow-volume electric submersible pump. <br />Additional development of each of the monitoring wells by pumping was performed by RGI technicians <br />on September 3, 1998. Each of the wells was pumped until dry and then allowed to recover prior to <br />sampling. <br />The elevations and horizontal locations of the new monitoring wells were surveyed by Drexel Barrell and <br />Company of Colorado Springs, Colorado. <br />Table 1. Monitoring Well Construction Details <br /> Well MW-5 Well MW-6 Well MW-7 <br />Drilled Depth ~'~ 120 100 70 <br />Cased Depth 107 57 47 <br />Top of Casing Elevation 5116.65 5254.13 5056.44 <br />Concrete Pad Elevation 5114.05 5251.36 5053.85 <br />Formation/Member <br />Screened Codetl Ss Smoky hills Ls <br />Fort Hays Ls Codell Ss <br />Screened Interval <br />(0.010" slots) 57-102 17-52 17-42 <br />Filter Pack <br />(Colorado Silica 10-20) 29-120 12.5-62ro1 15-70 <br />Sand Pack <br />(Colorado Silica 100 mesh) 25-29 10-12.5 10-15 <br />CementBentonite Grout 0-25 0-]0 0-10 <br />Casing Diameter (inches) 4 4 4 <br />Casin Material PVC PVC PVC <br />(a) all depths are is feet below ground surface. <br />(b) borehole was bacldilled with tunings, sand and bentonite pellets from 100 feet to 62 feet. <br /> <br />