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At the very last stage of refuse facility construction, in the upper <br />northeast corner, overburden from the mine facility area will need to be <br />brought up to cap the final area of approximately 80 feet x 80 feet. At <br />the 3.5 feet depth, this volume is 830 cubic yards. This material will <br />be scraped from the bench area between the preparation plant and the guard <br />shack with no noticeable change to the post mining contour. <br />To assure that all overburden material planned for use as cover for the <br />refuse disposal area is non-toxic and non-combustible, EFMC has collected <br />representative samples of the material for laboratory analysis. The <br />approximate locations and depths of the sample sites are shown on the <br />cross sections contained in Exhibit D, Disturbed Area Cross Sections. <br />After sample collection, all samples were composited and sent to a <br />qualified testing laboratory for analysis. The procedures and parameters <br />outlined in the Division document titled "Guidelines for the Collection <br />of Baseline Water Quality and Overburden Geochemistry Data" dated 9/16/82, <br />were used for sampling, compositing and analysis of this material. EFMC <br />sampled and analyzed both the mine bench material and non-mine bench <br />material separately. <br />In February 1989, IME prepared a report which evaluated the analytical <br />data to determine the suitability of the overburden materia] for refuse <br />cover. The analyses indicated suitability and the results were submitted <br />to the Division for approval. The suitability evaluation was accepted by <br />the Division on July 7, 1989. <br />l:~ <br />459 Revised - 04/13/90 <br />