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Mr. Wallace H. Erickson <br />Response to August 23, 2011 Bird Memorandum <br />September 9, 2011 <br />Page 4 <br />approved Stormwater Management Plan. See Attachment 3 (Attachment D -6, Figure <br />D -2). <br />Adequacy Issue No. C. Attachment D -7, Tailings Geochemical Characterization <br />Work Plan: <br />1) The Applicant must describe the type of testing that will be used to <br />determine the concentrations of Arsenic, Copper, Iron (Fe[II] and <br />Fe[III]), Lead, Potassium, Zinc, and Sulfate. <br />2) ABA: In addition to total sulfur all tests must include sulfide sulfur. <br />3) Humidity Cell Test: The collection of sample material for the tailings <br />humidity cell test must be done with the DRMS geochemist present. The <br />humidity cell test must be conducted under the conditions outlined in the <br />Division's adequacy review of 25 March 2011, i.e., the test must be run <br />indefinitely or until notified otherwise by the division and the analyte list <br />must be as described in the 25 March 2011 review. <br />4) For the "solution characterization method to analyze for pH acidity <br />alkalinity metals anions nitrates minerals cyanides organic carbon and <br />total dissolved solids TDS ", the Applicant must describe the analytical <br />methodologies to be used for each. <br />Response to Adequacy Issue No. C. <br />Response to Adequacy Issue No. C.1. <br />Wildcat proposes to perform testing on Arsenic, Copper, Iron (Fe[II] and Fe[III]), <br />Lead, Potassium, Zinc, and Sulfate using ICP /MS: <br />Wildcat commits to consulting with DRMS for all solids tests (e.g., SPLP, humidity <br />cell, acid -base accounting, whole rock analyses, solution characterization methods) prior to <br />the tests to determine appropriate sampling and analytical parameters, including, but not <br />limited to, what is regarded as a representative sample, the appropriate analytical suite for <br />each test, and laboratories that are qualified to perform the tests. Wildcat proposes to <br />analyze tailings analytes using a method set forth in Actlabs geochemistry /assay and <br />geometallurgy protocols (www.actlabs.com) and approved by DRMS. <br />Response to Adequacy Issue No. C.2. <br />ABA tests will include analysis for sulfide sulfur. <br />DEN 97, 591, 783v2 9 -9 -11 <br />GREENBERG TRAURIG, LLP • ATTORNEYS AT LAW • WWW.GTLAW.COM <br />