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CWDA No. 2 <br />#01349 -0001 �•-(� <br />��y linddlcston•Brrn <br />07/09/14 � .'1� 1 . . <br />3 <br />The recorded increases in pore pressures at VWP -08 are consistent with the fact that gob <br />placement has occurred in the vicinity of this instrument during the spring of 2014. It is likely <br />that additional increases in pore pressures will be recorded during the summer months as coal <br />refiise is actively placed in the vicinity of VWP -08. However, the increases in pore pressures are <br />not anticipated to be sufficient to reflect instability in CWDA No. 2. <br />IjbVP -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 steady over time. <br />VIVP -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 dewatering of <br />the gob in this area is likely nearly complete. It is anticipated that the pore pressures at VWP -10 <br />will remain steady over time. <br />Site Visit Observations <br />HBET visited the site on June 23, 2014. At the time of our visit, coal waste was actively being <br />placed at CWDA No. 2. In general, CWDA No. 2 appeared to be in good condition and no <br />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, HBET <br />does not believe that there is any reduction in the stability of CWDA No, 2. Continued quarterly <br />monitoring ofpiezometers and inclinometers is 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 />Respectfully Submitted: <br />Huddleston -B f Fry Engineering and Testing, LLC <br />s <br />39010 �Z: <br />�7/0 <br />is :. • . ..••. <br />NAL' <br />Michael A. Berry, P.E. <br />Vice President of Engineering <br />X: 2003 ALL PROJECTS'.00139 - JR Stover Associates inc`00499 -0003 Bowie v1ine%200 - Geo'Gob 21.00489 -0001 LR070914.doc 3 <br />