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I. PROCEDURES AND SUMMARY OF THE REVIEW PROCESS <br />WFC applied for full Phase I, II, and III bond release of 21 groundwater monitoring wells and 27 <br />exploration drill holes under the Colorado Surface Coal Mining and Reclamation Act. The mine is <br />located in Montrose County, Colorado, on lands included within: <br />Mine 1: <br />SWY<, Section 25, T47N, R16W containing 98.62 acres MOL shown on the USGS 7.5 minute <br />Nucla Quadrangle map. <br />Mine 2: <br />NW'/a, Section 6, T46N, R15W <br />E%z, Section 6, T46N, R15W <br />E''/zW%z, Section 6, T46N, R15W <br />N%z, Section 1, T46N, R16W <br />SW'/a, Section 31, T47N, R15W <br />SW'/oNW'/<, Section 31, T47N,R15W <br />NW'/aSW'/a, Section 31, T47N, R15W <br />S%z, Section 36, T47N, R16W <br />N''/z Section 36, T47N, R16W <br />SW'/< Section25, T47N, R16W <br />The above mentioned tracts of land containing approximately 823.56 acres aze shown on the <br />USGS 7.5 minute Nucla Quadrangle map. The total permit acreage for both mine azeas is 922.16 <br />acres. The bond release request covers monitoring wells and exploration holes within and <br />adjacent to the above referenced permit azea as shown on attached Figure 1. <br />WFC purchased the Nucla and Nucla East Mines from Peabody Coal Company and renamed them the <br />New Horizon Mine 1 and 2 respectively. The transfer of ownership and succession of operator was <br />completed on May 15, 1992. At this time, the New Horizon Mine 1 permit area encompasses <br />approximately 98.6 acres. The Mine 1 area has been revegetated for longer than 10 yeazs. The New <br />Horizon Mine 2 azea encompasses approximately 823.56 acres. Approximately 653.5 acres will be <br />disturbed from mining or related activities at Mine 2. Surface mining operations aze presently active <br />at the Mine 2 azea. <br />The mines aze located in the Nucla-Naturita coal field. The coal is found in late Cretaceous <br />sediments. The New Horizon Mine 1 produced coal from both the upper and lower Dakota coal <br />seams. The upper Dakota coal seam ranges in thickness from 1.6 feet to 3.3 feet and is sepazated <br />from the lower Dakota seam by 7 to I I feet of interbedded sandstone and shale. The lower Dakota <br />seam varies in thickness from 5.9 feet to 7.9 feet. The base of the lower Dakota coal is 83 feet above <br />the top of the Burro Canyon Formation. The coal dips 1° to 2° southwest and strikes N 25°W to N <br />45° W. <br />3 <br />