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inclinometers are shown on the attached Instrumentation Site Plan, Drawing 1. Baseline <br />readings were taken on 8/10/05 and subsequent readings have generally been taken <br />quarterly since that time. Displacement curves for the prior nine month period are <br />presented as attachments to this letter for each inclinometer. Axis "A" reflects <br />deformation with depth in the direction of anticipated movement (downslope), while Axis <br />"B" is orthogonal to Axis A. Based on our most recent site visit on September 24, 2014, <br />our latest readings indicate no definite movement of the gob pile at the inclinometer <br />locations. As described in previous reports, we are on the opinion that displacements <br />indicated on the plots for the upper ten feet of the inclinometers are likely due to <br />placement of cover soil on the face of the waste bank during normal operations. <br />Movement previously recorded in the B -axis of inclinometer BG05 -05 has not progressed <br />since December 2008 readings. <br />If you have any questions regarding this letter or the instrumentation monitoring at <br />CWDA No. 2, please don't hesitate to contact me at (970) 497 -8827 or <br />mcandorffbuckhornaeo. com. <br />Respectfully Submitted, <br />BUCKHORN GEOTECH, INC. <br />Wayne Pandorf, P.E. <br />Sr. Geotechnical Engineer <br />Enclosures: Instrumentation Location Plan, Drawing 1 <br />Figure 1 — Active and Damaged Piezometer Data Graph through 5 -21 -14 <br />Figure 2 — Active Vibrating Wire Piezometer Data Graph <br />Inclinometer Graphs BG05 -04, BG05 -05, and BG05 -07 <br />September 2014 Q3 Instrumentation Report REVISED 10 -20 -14 PN #13- 231 -001 <br />Page 2 of 2 <br />