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I note that TR-13 covers ditches at the Sutey pile (App. II-B-5) ; <br /> the rock tunnel pile (App. II-B-3 ) and the old refuse pile (App. <br /> II-B-3 Att. 3) . I suggest we place the applicable calculations, <br /> together with a copy of the approval form for TR-13 , at the end of <br /> each of these sections. The Operations Plan, Vol . I , Chapter II , <br /> page 31, should then be revised to include a paragraph concerning <br /> waste pile ditches, noting TR-13 and referencing the applicable <br /> appendices for relevant calculations. The additional paragraph <br /> would read as follows: <br /> Ditches at the Sutey refuse disposal area, the rock <br /> tunnel fill area and the old refuse pile area have been <br /> designed to safely pass a 100 year/24 hour storm event. <br /> The sizing of the ditches was approved by Technical <br /> Revision 13 , and applicable calculations are found at <br /> App. II-B-S (Sutey) ; App. II-B-3 (rock tunnel refuse <br /> pile) ; and App. II-B-7 Att. 3 (old refuse pile) . <br /> If this is agreeable to you, I will submit the revised permit page <br /> within the next week. <br /> Yours truly, <br /> Diane Delaney <br /> Mid-Continent Resources, <br />