2012-08-24_REPORT - M1980244 (16)

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ameO Underground Working #4027 was investigated using a Hitachi 350 excavator and observation was performed by an AMEC field representative. Excavation of the area was performed and it was found to be a shallow surface working. The native material was found to be consistent and all signs of a significant working were removed. The working was backfilled with structural fill in 18" to 24" lifts using various CAT dozers. Each lift was moisture conditioned using a tandem axle water truck (when necessary) and compacted using a 10 -ton vibratory smooth drum compactor, passing over the entire fill surface at least 4 times (method compaction technique was applicable). Underground Working #4033 was investigated using a Hitachi 350 excavator and observation was performed by an AMEC field representative. Excavation of the area was performed and it was found to be a shallow surface working. The native material was found to be consistent and all signs of a significant working were removed. The working was backfilled with structural fill in 18" to 24" lifts using various CAT dozers. Each lift was moisture conditioned using a tandem axle water truck (when necessary) and compacted using a 10 -ton vibratory smooth drum compactor, passing over the entire fill surface at least 4 times (method compaction technique was applicable). Underground Working #4034 was investigated using a Hitachi 350 excavator and observation was performed by an AMEC field representative. Excavation of the area was performed and it was found to be a shallow surface working. The native material was found to be consistent and all signs of a significant working were removed. The working was backfilled with structural fill in 18" to 24" lifts using various CAT dozers. Each lift was moisture conditioned using a tandem axle water truck (when necessary) and compacted using a 10 -ton vibratory smooth drum compactor, passing over the entire fill surface at least 4 times (method compaction technique was applicable). Underground Working #4035 was investigated using a Hitachi 350 excavator and observation was performed by an AMEC field representative. Excavation of the area was performed and it was found to be a shallow surface working. The native material was found to be consistent and all signs of a significant working were removed. The working was backfilled with structural fill in 18" to 24" lifts using various CAT dozers. Each lift was moisture conditioned using a tandem axle water truck (when necessary) and compacted using a 10 -ton vibratory smooth drum compactor, passing over the entire fill surface at least 4 times (method compaction technique was applicable). Underground Working #4036 was investigated using a Hitachi 350 excavator and observation was performed by an AMEC field representative. Excavation of the area was performed and it was found to be a shallow surface working. The native material was found to be consistent and all signs of a significant working were removed. The working was backfilled with structural fill in 18" to 24" lifts using various CAT dozers. Each lift was moisture conditioned using a tandem axle water truck (when necessary) and compacted using a 10 -ton vibratory smooth drum compactor, passing over the entire fill surface at least 4 times (method compaction technique was applicable). Underground Working #4037 was investigated using a Hitachi 350 excavator and observation was performed by an AMEC field representative. Excavation of the area was performed and it was found to be a shallow surface working. The native material was found to be consistent and all signs of a significant working were removed. The working was backfilled with structural fill in 18" to 24" lifts using various CAT dozers. Each lift was moisture conditioned using a tandem axle water truck (when necessary) and compacted using a 10 -ton vibratory smooth drum compactor, passing over the entire fill surface at least 4 times (method compaction technique was applicable). Underground Working #4039 was "cleaned out" using a CAT 330 excavator and observation was performed by an AMEC field representative. The location was staked by the Ames surveyor. MEW Weekly Report WE 01.28.2012