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ORIGINAL - POBLIC PILE <br />(Page 2) <br />MINE ID # OR PROSPECTING ID #: nn_t9R[l_9dd <br />INSPECTION DATE: ~/~4JOS INSPECTOROS INITIALS: ~_ <br />OBSERVATION <br />The Division conducted a bi monthly monitoring inspection of the site on <br />2/24/05. The area had received approximately 3 to 4 inches of snow the <br />night before which was evident at the time of the inspection. Prior to the <br />inspection a brief discussion was held regarding the Liner Load Test the <br />Division requested about eight months ago. When Amendment # 8 was approved <br />all of the engineering calculations used an ore density of 110pcf, with ore <br />height of 590 feet and maximum ore to be placed of 262 million tons. <br />However, with a 110pcf ore density, and a height of 590 feet, the total ore <br />that will be placed will be in excess of 262 million tons. The 262 million <br />tons of ore was never requested to be changed to allow a higher tonnage on <br />the pad. With that in mind, the Division had requested the operator's <br />design and construction engineer (Golder and Associates) to conduct another <br />liner load test using the calculated density for the ore to make sure the <br />liner could accommodate the added ore that is anticipated when the pad is <br />loaded to the maximum height of 590 feet in five to six years. Even though <br />under the engineering calculation for Amendment # 8, the operator had <br />demonstrated the liner to handle 450 psi at an assumed ore density of <br />110pcf, the Division wanted another calculation to be reviewed by our <br />engineering staff, prior to submittal of a Technical Revision to increase <br />the ore tonnage from 262 million approved under Amendment # 8. The operator <br />had obtained permission from the County to mine 25 million tons of ore/ <br />years. That is a 5 million ton / year increase from what was approved under <br />Amendment # 8. The footprint of the pad will still be with in the 379 acres <br />of the pad area as approved in Amendment # B.Ther was also a brief <br />discussion regarding the operators plan to construct another haul Road to <br />accommodate the East Cresson mine extension area. Operator was informed to <br />submit a Technical Revision for the road. The Division also requested a new <br />affected acreage map showing the actual acreages of the affected areas, now <br />that the footprint for the main pit areas is delineated through <br />exploration. Operator agreed to provide the requested maps with the <br />Technical Revision for the Haul Roads. <br />Inspected the crusher area. Secondary crusher was being maintained at the <br />time of the inspection. Storm water control structures were found to be in <br />good repair. Both the Main and East Cresson mines were active. Phase I of <br />the East Cresson mine is mined and backfilled. <br />Inspected the phase I, II, III AND IV leach pad areas and collected the <br />following readings from the Hhigh and Low volume solution collection <br />transducers. <br />Phase I high Volume Solution Collection transducer # 2 was recorded at 49.4 <br />and # 3 was at 53.3-. Low volume transducer # 1 was recorded at .29 and # 2 <br />was at .52. Piezometer for the pond was at 48.8 feet. <br />Phase II high Volume Solution Collection Transducer # 4 was at 33.0 # 5 was <br />at 34.7 and # 6 was at 34.2. Low volume transducer # 1 was at .15 and # 2 <br />was at .46. Piezometer for the pond was recorded at 35.2 feet. <br />