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"W1 <br />Underdrain System: <br />Primary Underdrain: Complete. <br />Secondary Underdrain: No work was performed during this reporting period. <br />Tertiary Underdrain: Complete within the PSSA footprint. <br />B) Underground Workings <br />Underground workings #6581, #6582, #6583, #6584 #6586, #6587, and #6588 (all shafts) were <br />found to be connected. Confirmatory drilling was started. Additional drilling and remediation is <br />required. <br />An excavator exposed an adit and a stope in a cut area at underground workings UG #6273 and <br />UG #6461, respectively. Excavation will discontinue until after the cut is removed. The workings <br />may require further remediation and confirmatory drilling. <br />Underground working UG #6454 was excavated into the slope. Rail tracks were found extending <br />from the slope indicating a potential adit. Portions of the working were backfilled per project <br />technical specifications. Further remediation is required. <br />Underground workings UG #6459, UG #6549, UG #6550, UG #6577, and UG #6578 were <br />excavated to competent rock, backfilled per project technical specifications, and are considered <br />remediated. <br />Timbers, concrete, and steel were removed from working UG #6153 and were disposed of. <br />Further remediation is required. <br />Trees were removed from around working UG #6576 (a timbered shaft) providing access for <br />backfilling. On -site native material meeting the specifications for coarse shaft backfill was placed <br />into the working until the source was depleted. Some pioneering work for confirmatory drilling <br />was done. Further remediation is required. <br />Underground working #6585 was removed in a cut and is considered remediated. <br />Ames began excavation of working UG #6635. Additional remediation required. <br />Geomembrane: <br />PSSA <br />Primary 100 -mil DSMS LLDPE Liner Installation <br />Ames used a Bobcat to backfill the anchor trench by placing soil liner fill in a single 12 -inch lift <br />and compacted it using a vibratory plate compactor. Anchor trench was backfilled a depth of 12 <br />inches along primary liner panel numbers P -2 through P -66. Sandbags were removed from the <br />anchor trench prior to soil liner fill placement. <br />ECA continued installing 100 -mil LLDPE smooth geomembrane at the PSSA west slope and ADR <br />pad. Panels P -1 through P -66 were deployed. Twenty -eight rolls of 100 -mil LLDPE smooth <br />geomembrane were used, yielding 10,217 lineal feet of fusion welds for an approximate installed <br />weekly total of 182,480 square feet. Quality control was performed using up to two extrusion <br />guns. All work performed was observed by AMEC Quality Assurance (QA) personnel and was <br />completed in accordance with project technical specifications. <br />2014.08.16 -MLE2 WEEKLY FINAL Page 3 of 8 <br />