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Corrective Actions from DRMS December 20, 2016 Site Inspection Report <br />Corrective action #1: <br />The Operator shall, within 30 days of the signature date of this inspection report, demonstrate <br />representative samples have been collected from the material removed from the adit, and sent to <br />a laboratory for analyses of the material's toxic and acid producing capabilities. <br />CC& V's response. hr mid-November 2016, CC&V staff sampled six locations where <br />development rock material fi-om the Chicago Tunnel Mine adit was placed in four piles (Figure <br />P. <br />Figure 1 below highlights each of the six locations sampled. Sampling locations #1 and #2 are <br />considered one pile, whilst. sampling locations #S and #6 are also considered one pile. A total <br />of six samples were collected in order to sample the four piles. As a point of reference, the <br />Chicago Tunnel storm water catchment pond is directly northeast of sampling locations #1 and <br />#2. The north direction is located at the top of the figure. <br />Representative samples of each of the piles were obtained by taking a 6 ft. long transect <br />approximately 8 inches deep resulting in a 201b sample. Each sample was sent to two <br />laboratories far chemical analyses. Total metal and Toxicity Characteristic Leaching Procedure <br />(TCLP) analyses were completed by Midcontinent Testing Laboratories, Inc. Potential for acid <br />generation or acid neutralization, commonly referred to as Acid -Base Accounting, resulting from <br />the rock material was analyzed for by ACZ Laboratories, Inc. <br />Figure 1: Plan view of the rock material piles immediately west of the Chicago Tunnel Mine. <br />