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~~ <br />III'II III IIIIIII III <br />C c~rp~us <br />"`~ Yampa Vallay <br />November 19, 1993 <br />Kent Gorham <br />Reclamation Specialist <br />Division of Minerals and Geology <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />Dear Mr. Gorham; <br />Cyprus Yampa Valley Coal Corporation <br />29587 Routt County Road #27 <br />Oak Creek, Colorado 80467 <br />303-879-3800 <br />RECIdI~~f~ <br />NO V 2 3 1993 <br />Diviei~n c+ +.;,re. <br />~;5 ~.. ~;JUJ~j~~ <br />Enclosed, please find materials which should complete the <br />information packet previously submitted with the initial response <br />to the referenced AHR review. These items address points noted in <br />our telephone conversation of November 3 along with a few other <br />minor items, and hopefully will serve to complete / clarify those <br />items. <br />A revised Table 30 has been enclosed, and reflects the corrected <br />mean flow value pertaining to Site 84 for 1992. This value was not <br />reviewed during the initial AHR response, and TCC apologizes for <br />this oversight. It would appear that the 0.23 cfs value was a <br />columnar shift error, and should have read 0.28 cfs. You will note <br />that the revised Table 30 which is enclosed shows a value of 0.29, <br />which reflects the rounded value for Site 84 during 1992. The mean <br />flow value for Site 109 has also been revised to read 0.23 as <br />compared to the previously reported 0.22 cfs, and the Site 115 <br />value has been corrected to read 0.22 cfs as compared to 0.20 cfs. <br />These errors apparently resulted from the insertion of an incorrect <br />column value for Site 115 which in turn shifted the remaining <br />values by one column. Also, please note that Table 30 has been <br />revised as a result for the 1992 mean flow value for sites 115 and <br />109 combined, with the value reading 0.45 as compared to the <br />previously reported 0.42 cfs. TCC is modifying the manner in which <br />these values are calculated, and will hopefully prevent a <br />recurrence in the future. A revised Figure 42 reflecting the <br />slight changes for the reported means has also been enclosed. <br />Also enclosed are the revised data sheets for Sites 302 (addressing <br />the doubling of values} and 06AW2 (addressing the incorrect water <br />level value) which were inadvertently left out of the initial <br />response packet which you received. <br />