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' �71 <br />structural fill near stations DD4 +00 to DD5 +00 and FFO +00 to FF4 +00. The structural fill was placed and <br />compacted per method specification. <br />Dozers and a Cat 345 excavator rough graded the slope and pushed down material near stations C1 +00 to C4 +00 <br />where it was stockpiled and later removed for use as structural fill. <br />A Cat D6 was rough grading the slope and pushed down material near stations A4 +00 to A5 +00 where it was <br />stockpiled and later removed for use as structural fill. <br />Note: An Amec field representative monitored structural fill material temperatures placed within the areas of fill <br />during all shifts. Average structural fill temperatures were above 32 °F. <br />Clay (SLF) Processing: <br />Cameron Site: No clay mining or processing occurred at the Cameron Site. Approximately, 244,860 tons of clay / <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 later removal 1 use. <br />Squaw Gulch Clay Borrow Site: Clay mining and processing took place at the Squaw Gulch Clay Borrow Site. <br />Approximately, 62,000 tons of soil liner fill material has been produced at the Squaw Gulch Clay Borrow Site to <br />date. <br />Underdrain System: <br />Secondary Underdrain: No work occurred on the secondary underdrain. <br />Approximately, 5,134 feet of secondary underdrain has been completed to date in the VLF. <br />Primary Underdrain: Approximately, 280 lineal feet of the primary underdrain alignment was installed in the <br />bottom of the PSSA. <br />To date, approximately 1,755 feet of primary underdrain has been completed. <br />Tree /Slash Grubbing and Clearing, Chipping: <br />A Cat 330 excavator was removing the remaining trees from stations PO +00 to P2 +00 within the South Perimeter <br />Road right -of -way. The trees were transported to Area 34 stockpile using a Cat 740 haul truck. <br />B) Underground Workings <br />Confirmation drilling was completed at underground working #06428. Additional remediation work will be required. <br />Shot rock was removed from underground workings UG #6302 and UG #6003; both workings were backfilled. <br />Underground working #6302 was prepared for a concrete plug and had 12 cubic yards of concrete placed in it. <br />Additional remediation work will be required on both workings. <br />Underground workings UG #6320 and UG #6334were prepared for concrete plugs. <br />Underground workings UG # 6291, UG #6431, UG # 6309 and UG 46432 were removed during slope grading at the <br />West Perimeter road and are considered remediated. <br />C) Historical Crib Wall I South MSE Wall: <br />A Cat 320 excavator was used to remove tailings from behind the timbers at the historic crib wall. The tailings were <br />pushed down hill near station B16 +00 where they were loaded out and used as fill. A Cat 320 excavator was also <br />used to remove timber panels form the historic crib wall that were fastened together with steel backing straps and <br />spikes. On February 13, 2014 the dismantling of the historic crib wall was completed. <br />Page 2 of 7 MM IAT 15Febl4.doc <br />