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aMle a , <br /> the PSSA floor completed the underdrain in this area. Sample SSF 14-R was collected from this <br /> area. <br /> Tertiary Underdrain: Approximately 95 feet of tertiary underdrain was installed above station <br /> A4+00. <br /> B) Underground Workings <br /> Confirmatory drilling was completed at the Anaconda Mine Complex at working#UG 6513. The <br /> confirmatory holes were grouted at both sites. Additional remediation is required. <br /> Underground workings UG#1646, UG#6318,UG#U6384, UG#6491, UG#6505, and UG#U6634 <br /> were excavated to competent rock, backfilled per project specifications, and are considered <br /> remediated. <br /> C) Geomembrane: <br /> PSSA <br /> ECA cut wrinkled liner and made repairs the LSVCS riser pipe trench area. Repairs were <br /> vacuum tested. <br /> A 4,620 square-foot, 80-mil rub sheet was placed in the LVSCS riser piping trench. <br /> Geomembrane installation continued within the PSSA and included: deployment, seaming, repair, <br /> and QA/QC activities. Geomembrane installation was performed on the PSSA east and west <br /> slope. Approximately 44,766 square feet of 100 mil LLDPE geomembrane was deployed (panels <br /> S-240 through S-247). Subgrade was inspected and approved by AMEC, Ames and ECA <br /> representatives prior to geomembrane deployment. Approximately 2,008 linear feet of seam was <br /> fusion welded during deployment using two fusion welding machines for the day of deployment. <br /> Destructive and non-destructive testing was completed per project technical specifications <br /> (Destructs 102 through 104). <br /> Due to weather conditions throughout the week, no new liner was approved for low volume <br /> placement. <br /> Anchor trench was excavated to approximately station A16+00 on the east side of the PSSA and <br /> to station 1312+00 on the west. Anchor trench backfilling occurred immediately after liner <br /> deployment and non-destructive testing was completed. <br /> D) Overliner: <br /> • PSSA <br /> Ames staged and thermally fused 18-inch LVSCS riser pipe on the PSSA floor. <br /> A Cat 312 excavator removed the temporary piping on panel S190. <br /> Ames installed a temporary manhole at the closure drain area in the PSSA to collect storm water <br /> runoff. <br /> Low volume material was spread over the secondary liner adjacent to the anchor trench using a <br /> cat 312 excavator, a skid steer, and labors along the 9450' elevation bench edge next to the ADR <br /> pad and along Bench A from stations AO+00 to A5+00. <br /> Cat 740 trucks hauled low volume solution collection fill (LVSCF)to the PSSA. Haul roads for the <br /> trucks were maintained at least 4 feet above secondary geomembrane. <br /> 2014.08.02-MLE2 WEEKLY FINAL Page 3 of 8 <br />