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Mr. Wallace H. Erickson <br />Response to Sixth Adequacy <br />October 11, 2011 <br />Page 20 <br />technical review memorandum, dated August 23, 2011, was attached to the Division's <br />fifth adequacy letter. <br />Mr. Bird has reviewed the Applicant's response to the adequacy issues identified <br />in his previous memorandum and has identified the following adequacy issues: <br />a. Response to Adequacy Issue No. C.4.: Be advised that addition of any <br />acid or base to a sample prior to analysis for paste pH, acidity, or alkalinity will <br />compromise the analysis. Section 1.1 of Method 305.2 states that the method is <br />"applicable to rain, surface and other waters of pH less than 8.3." The method is not <br />appropriate for solid media. DRMS recommends that the Operator measure paste pH <br />using Sobek method 3.2.2 and forego any attempt to measure acidity in solids. The only <br />sample preparation needed is grinding and screening to the appropriate mesh. Rather <br />than alkalinity in solids, DRMS recommends analysis for acid - neutralizing capacity. <br />b. Response to Adequacy Issue No. E.3.a and b.: Within one year of permit <br />approval, Wildcat must provide all ground water level data collected from any drill holes, <br />and together with known spring elevations and stream elevations, provide to DRMS a <br />ground water elevation contour map. The map must be updated through the mine life as <br />new ground water level data are obtained. Upon interception of ground water in drill <br />holes, the operator must also perform airlift recovery tests to obtain water production <br />data. <br />c. Response to Adequacy Issue No. E.3.c.: Wildcat must begin collecting <br />ground water data from monitoring wells immediately following well development, and <br />well development must be concluded within five days of completion of the wells. <br />d. Response to Adequacy Issue No. B.: Although the cross - section "A" <br />appears to indicate that a diversion ditch will be constructed upslope of the augmentation <br />pond, the location of the 'ditch is not shown on the plan drawing. Please clarify. <br />Please address the adequacy issues identified by Mr. Bird. <br />Response to Adequacy Issue No. 13.a. <br />Wildcat will measure paste pH using Sobek method 3.2.2 and forego any attempt <br />to measure acidity in solids. <br />Response to Adequacy Issue No. 13.b. <br />Wildcat will provide all ground water level data collected from any drill holes, <br />and together with known spring elevations and stream elevations, will provide to DRMS <br />a ground water elevation contour map, within one year of permit approval. Wildcat will <br />update the map through the mine life as new ground water level data are obtained. Upon <br />DEN 97,629,117v1 10 -11 -11 <br />GREENBERG TRAURIG, LLP ® ATTORNEYS AT LAW 13 WWW.GTLAW.COM <br />