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• ROCK DUST SiIORAGE FACIT,TTV <br />On September 30, 1987, EFCI submitted a request for minor revision (MR-12) <br />to construct and operate a rock dust storage facility. Urrler the <br />"Description of Activities", included as part or the minor revision <br />request, EFCI described site drainage provisions and requested an <br />exemption fx[an full scale drainage control requirements. The minor <br />revision was approved by the CbIIRD on October 21, 1987, however, the <br />approval did nat specifically aflr7roac the exemption request. <br />the rock dust storage facility, located immediately west of the opal <br />refuse stockpile as shown on the Mine Facilities Map, (Map 18), consists <br />of an ir~,~arly shaped graveled pad area, approximately 50x125 feet, a <br />12 * 12 foot concrete pad with support footings, a cased borehole, the <br />L~ <br />• <br />C\...860\TR16.REV <br />11/o6/s3 lpm 202R Revised -November 1993 <br />