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Quarterly Inspection Report-Refuse Pile July 9,2019 <br /> Tw n.tymile Coal Company- eid l Creek Min <br /> Job No.: 99-� 9 �� of 3 <br /> seepage area at the toe of the northeast end of the refuse pile expansion area, approximately 30 feet <br /> northwest of the outlet of the underdrain, developed in fall 2014. At the time of our site visit, the seepage <br /> area was not accessible due to construction activity for the wash plant thickener tank. The seepage area will <br /> be observed during our next quarterly inspection. <br /> Based on our observations, the surface drainage conditions generally appeared to be adequate across the <br /> top and sides of the pile. Based on our observations, we did not observe any signs of instability., structural <br /> weakness or hazardous conditions at the refuse pile. Photographs of the refuse pile taken at the time of our <br /> inspection on June 2 ,2019 are attached, <br /> We were advised that the wash plants had produced approximately 67,317 tons of waste coal during the <br /> month of April 2019: approximately 89,797 tons during May 2019: and approximately 68,601 tons during <br /> June 2019. 1t is our understanding that the fines being produced at the wash plant, which consists of <br /> approximately 10 to 20 percent of the total materials being produced, are being pupped underground into <br /> the mine. <br /> We were previously informed by Brian watterson of Peabody that all of the original monitor-wells installed <br /> in the Refuse Pile were destroyed in July 2012. Two new monitor wells were constructed in Area 1 of the <br /> Refuse Pile in December 2013. NWCC was provided monthly monitor well readings for this quarter by <br /> Miller water Monitor* Service, Inc. The water level in the western monitor well Rw 1 was measured at <br /> 57.46 feet below the existing ground surface (bgs) on April 23`d, at 57.3 feet bgs n May 6 th and at 5 .12 <br /> feet bgs on June 2 "1 of 2019. The water level in the eastern monitor well RW#2 was measured at 56.45 <br /> Feet bgs on April 23`r, at 56. 3 Feet bgs on Nay 61 and at 5 .16 feet bgs on June 2701 of 2019. An <br /> additional monitor well (RSV'#3) was constructed at the southeast end of the I" bench in new Expansion <br /> Area in June of 2014. The water level in the expansion area monitor well RW#3 was dry when cheeped <br /> on April 2311,May 1"and June 27 lb of 2019. <br /> Based on our limited observations, it appears that the pile is currently being constructed and maintained in <br /> general accordance with the project specifications and plans submitted under 2. .3 1 and that the <br /> potential hazard to human life and property at the site in its present condition is minimal. This report fulfills <br /> the quarterly inspection requirements as specified by Rules 4.09.1 11)(a), 4.09.1 11 b , 4.10.2 2 a and <br /> 4,10.2(2)(b). <br /> WCC,Inn. <br />