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t2-OS-1997 d:17PF1 FR0~7 ENG. wEST ELK t~1INE 970 9295050 Minor Revisron No. 208 Page 2 December 5, 1997 r ~ ,~ _ _ ass ~a"o~ ;~\ includes analyses of hydrologic data gathered during the yeaz to assess the impacts of mining on the quality and quantity of mine inflows and mine r~ ~ ~ ~~' \N~~ ' discharges. Also included aze "Mine maps showing the locations of mine ~ ~ !,~ ~ inflows along with estimates of the quantity, duration and source of inflows.' ey~~, c ~t~ The methodologies for obtaining the quantity and duration of flow is discussed W4 in the response to #l . P. 2 ~ MCC has provided discussions in the permit on mine water routing and _~ sumping, in the Probable Hydrologic Consequences (PHC) Technical Revision ~/, No. 80. Please note that in response #2 of MCC's February 10, 19971etter, which wa<, provided in response to the Division's request for a revision to improve the hydrologic monitoring program, hiCC requested that the Division provide further clarification and/or examples as to the Division's request to revise the permit to reflect monitoring and reporting of mine inflows in l,~reater detail. This information was not provided by the Division, but MCC believes that the statements currently in the permit (page 2.05-81 and 2.05-82) are adequate to address the Division's request. ~~ ~~y~~ a. a >u ~~ p p,~J gV'' ~' ( y r~ ~ S , C~~ ~~lur ~ 5. n ~1. T 1N'a "~ ~'~ ~ r~"` rN ~ ~~ ,~ , ~ t ~j~-f ~~ 7. Ic~q ,~ ,~u~a'~IyE,C,9 ~,^ ~~~ ~~ ~~ No response is required, As we had discussed this past spring when planning the AHR, MCC does not agree that the Annual Hydrology Report should be amended to include laboratory data sheets and chain-of-custody forms as appendices. The laboratory data sheets were provided to the Division with the 1996 AHR, as we had agreed. It was MCC's understanding that the continued need for the data sheets would be reevaluated afrer the Division had completed the 1996 AHR review. These documents continue to be available at the mine site, as well. As stated previously, MCC does not believe that these sheets would be a valuable addition to the report, nor is it required by the Regulations. No response is requ'ved. As part of MCC's ongoing quality asswance and quality control, MCC may request that the laboratory provide an anion and cation balance as a check on the laboratory analytical data. MCC does not believe that it is necessary to revise the permit to accomplish this task, as it is not an additional parameter to be analyzed, but is a calculation that can be added to the laboratory sheets. No response is required.