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iii iiiiuiiiiiiiiii <br />STATE OF COLORADO RiC HARD D. LAMM, Govrin nr <br />DEPARTMENT OF NATURAL RESOURCES <br />D. Monte Pascoe, Executive Director <br />MINED LAND RECLAMATION <br />423 Centennial t3uilding, 1313 Sherman Street <br />Denver, Colorado 80203 Tel. (30~) 866-3567 <br />David C. Shelton <br />Director <br />DATE: November 10, 1982 <br />TO: Sandy Emrich n <br />FROM: David Cra a-g ,//IpJ1/L~(/, <br />RE: Adequacy Comments - Foi del Creek Mining Application <br />I have completed my adequacy review of Colorado Yampa 's mining application <br />for the proposed Foi del Creek Mine. Specifically, I reviewed the geology <br />and ground water portions of the application. The following is a list of <br />questions and comments I have regarding this review. <br />Geology <br />Rule 2.04.6(2)(a)(i.y)(B) <br />The applicant should submit the Zithologic logs for the drill holes from <br />which the recentl y submitted roof and floor geochemistry data was taken. <br />The specific drill holes are as follows: 006-82-072, CH-82-04I, CH-82-65, <br />006-82-046, CH-82-74A, and CH-82-74B. <br />Rule 2.04.6(2) (a) (iv) (D) <br />The applicant should justify why such small stratigraphic intervals were <br />sampled when obtaining the recently submitted roof and floor geochemistry <br />data. Most of the samples were taken from the sequence of strata located <br />1 foot above and below the Wadge Coal Seam. Is this amount of sample <br />sufficient to adequately characterize the geochemistry of the potential <br />roof fall material? <br />Ground Water <br />Rule 2.04.7 <br />The applicant has listed the value4 of storage coefficient for the <br />overburden aquifer to be4 1.7 x 10 (p. 2.04-17, vol. 1). Shouldn't <br />this value be 1.7 x 10 The applicant should correct the typographical <br />error. <br /> <br />