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• If a. <br />A Cat GPS D8 dozer was used to place stockpiled structural fill in 18 inch to 24 inch lifts at the Midway fill area near stations <br />H0+00 to H2+00. A Cat CS56 smooth drum roller was used for compaction. The structural fill was placed and compacted per <br />project specification. <br />A Cat 980 loader, a Cat GPS D7 dozer, and 740 haul trucks were used to remove excess material from the PSSA pond floor. <br />The material was placed as structural fill at the eastern PSSA/HWY67 ramp. A Cat GPS D6 dozer and a Cat CS56 smooth <br />drum roller were used for placement and compaction. The structural fill was placed and compacted per project specification. <br />Cat dozers cut the slope to rough grade near stations G0+00 to G2+00, J0+00 to J3+00, H22+00 to H30+00, C0+00 <br />to C4+00, DD15+00 to DD16+00, down slope of stations B7+00 to B8+00, and at the PSSA embankment. A Cat <br />CS56 smooth drum roller compacted the finished subgrade slopes at the PSSA embankment afterwards. <br />Note: An AMEC field professional monitored structural fill material temperatures placed within fill areas. Average <br />structural fill temperatures were above 32 °F and snow removal occurred prior to fill placement. <br />Clay (SLF) Processing: <br />Cameron Site: No clay mining or processing occurred at the Cameron Site. Approximately 244,860 tons of clay I <br />soil liner fill (SLF) material have been produced at the Cameron site. SLF produced from the operation remains <br />stockpiled at Cameron Site for future use. <br />Squaw Gulch Clay Borrow Site: Clay mining and processing took place at the Squaw Gulch Clay Borrow Site. <br />Approximately, 110,500 tons of soil liner fill material has been produced at the Squaw Gulch Clay Borrow Site to <br />date. <br />Underdrain System: <br />Primary Underdrain: No work occurred on the primary underdrain. <br />Secondary Underdrain: No work occurred on the secondary underdrain. <br />Tree /Slash Grubbing and Clearing, Chipping: <br />No clearing or grubbing occurred. <br />B) Underground Workings <br />• Confirmatory Drilling <br />Confirmatory drilling occurred at underground working #U6115 and #U6273. Further remediation efforts are <br />required. <br />Drill access was constructed to underground workings #6112, #6119, and #6508. Confirmatory drilling is pending. <br />• Remediation <br />Underground working #U6114 and #U6391 were removed during cut operations and are considered remediated. <br />Underground working UG #6276 extended into the %:1 slope. Structural fill was placed in the opening of the alit <br />with a Cat 320 excavator. The working is considered remediated. <br />Underground workings #U6428, #6439, #6440, #U6441, #6494, #6495, #64985#6500,#6501,#65151#6516, <br />#6517, #6518, #6519, #6528, and #6529, were excavated to competent rock, backfilled with structural fill, and are <br />considered remediated. <br />Ames worked on exposing an adit and removing timbers at underground working #U6461 using a Cat 330 excavator <br />with a bucket and a Cat 330 excavator equipped with a rock hammer. Additional remediation efforts are required. <br />Page 2 of 7 MLE2 WE 12 April 2014. doe <br />