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CWDA No. 2 <br />#01349-0001 Huddlestnn -Bem <br />0111411 <br />The recorded increases in pore pressures at VWP -08 are consistent with the fact that bob <br />placement has occurred in the vicinity of this instrument during the spring and summer of 2014. <br />The pore pressures in VWP -08 may decrease slightly over the winter months during which no <br />gob is being placed at CWDA No. 2 and then increase again in the spring once gob placement <br />operations resume. However, the pore pressures measured to date are not sufficient to reflect <br />instability in CWDA No. 2. <br />VPVP -09 <br />VWP -09 was installed on May 18, 2012 near the toe of CWDA No. 2. The pore pressures <br />recorded at VWP -09 have been fairly steady since installation. This suggests that dewatering of <br />the gob in this area is likely nearly complete. It is anticipated that the pore pressures at VWP -09 <br />will remain fairly steady over time. <br />VWP -10 <br />VWP -10 was installed on May 18, 2014 near the toe of CWDA No. 2. The pore pressures <br />recorded at VWP -10 have been fairly steady since installation. This suggests that de-watering of <br />the gob in this area is likely nearly complete. It is anticipated that the pore pressures at VWP -10 <br />will remain fairly steady over time. <br />Site Visit Observations <br />HBET visited the site on January 8, 2015. At the time of our visit, CWDA No. 2 was generally <br />snow covered and coal waste was not being placed. At the top of CWDA No. 2, piles of wet gob <br />were present in the drying area. The wet gob piles appeared to be in conformance with the <br />recommendations outlined in the referenced Stability Evaluation report for TR #85. <br />Coverfill soils from the excavation of the eastern portion of CWDA No. 3 were being placed in <br />the stockpile areas on CWDA No. 2. In general, CWDA No. 2 appeared to be in good condition <br />and no evidence of instability or other adverse conditions were observed. <br />General <br />In general, based upon the results of the recent VWP and inclinometer monitoring data, and upon <br />our observations at the site, HBET does not believe that there is any reduction in the stability of <br />CWDA No. 2. Continued quarterly monitoring of piezometers and inclinometers is <br />recommended. <br />We are pleased to be of service to your project. Please contact us if you have any questions or <br />comments regarding the contents of this report. <br />Respectfi.dly Submitted: <br />Huddleston -Berry Engineering and Testing, LLC <br />ki ©rro 0- el Iq <br />Michael A. Berry, P.E. �.�' , *ogNgol* <br />Vice President of Engineering �`rS/10NAL <br />X:2008 ALL PROJECTS101349 -Bowie Resources, LI.C\01349 -0001 Bowie Nline1200- Geo%Go63UnsUumemalion Nlonitering\01349 -0041 GP^_ LRO11415.doc 3 <br />