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STATE OF COlORA00 RICHARD D. l~. Governor III IIIIIIIII IIII III <br />DEPAflTMENT OF NATURAL RESOURCES 999 <br />D. Monte Parcae, Eaecutiva Director <br />MINED LAND RECLAMATION <br />423 Centennial Building, 1313 Sherman Street <br />Denver, Colorado 90203 Tel. (303) 866-3567 <br />David C. Shelton <br />Director <br />DATE: November I0, I982 <br />217: Sandy Emrich n <br />FROM: David Craig <br />RE: Adequacy Comments -Foidel Creek Mining Application <br />I have completed my adequacy review of Colorado Yampa's mining application <br />for the proposed Foidel Creek Mine. .Specifically, r reviewed the geology <br />and ground water portions of the application. The following is a list of <br />questions and cormnents I have regarding this review. <br />Geology <br />Rule 2.04.6(2)(a)(iv)(B) <br />The applicant should submit the Iithologic Zogs for the drill holes from <br />which the recently submitted roof and floor geochemistry data was taken. <br />The specific drill holes are as follows: 006-82-072, CH-82-041, CH-82-65, <br />006-82-046, CH-82-74A, and CB-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 Zocated <br />1 foot above and below the Wadge Coal Seam. Zs this artount of sample <br />sufficient to adequately characterize the geochemistry of the potential <br />roof fall material? <br />Ground Water <br />Rule 2.04.7(I)(b) <br />The applicant has Listed the value4 of storage coefficient for the <br />overburden aquifer to be4 1.7 x 10 (p. 2.04-27, Vol. 1). Shouldn't <br />this value be 1.7 x 10 The applicant should crorrect the typographical <br />error. <br />f <br />