2014-10-07_REPORT - M1980244 - Laserfiche WebLink

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ameO Working UG#6117 was partially excavated, prepared for confirmatory drilling, and drilled. C) Geomembrane: PSSA Primary 100-mil DSMS LLDPE Liner Installation ECA installed 100-mil LLDPE smooth geomembrane in the PSSA. Panels P-214 through P-313 were deployed on approved LVSCF. Fifty one (51)full rolls and multiple partial rolls of 100-mil LLDPE smooth geomembrane were deployed yielding 21,784 lineal feet of fusion welds for an approximate installed weekly total of 322,860 square feet. A wrinkle was removed from panels P-11 to P-17 by cutting out excess material and fusion welding the liner back together. Quality control was performed using two extrusion guns. All seams were fusion welded per project technical specifications. All work performed was observed by AMEC QA personnel. Approximately 460 lineal feet of anchor trench was backfillec over primary liner and compacted per project specifications. Destructive samples PDF-81 through PDF-121 and PDX-3 were marked for testing. PDF-34; PDF-79 through PDF-102; PDF-104 through PDF-107; PDF-109 through PDF-115 and PDX-3 were tested and passed per project technical specifications. PDF-103 failed; the seam was delineated with passing results and capped. D) Low Volume Solution Collection Fill (LVSCF): PSSA Cat 740 trucks hauled LVSCF to the PSSA. Haul roads for the trucks were maintained at least 4 feet above secondary geomembrane. Ames continued placing LVSCF on approved secondary liner in minimum 3-foot lifts with Cat GPS D6 and D8 wide pad dozers between panels. S248 to S254; S268; S270 to S273; S275; S284 to S287; S294 to S299; S321 to S324; S354; S355; S359; S361 to S363; S365; S366, and S368; S380 to S382; and S390 to S392. See the attached LVSCF map for all placement locations. E) Drain Cover Fill (DCF): Cat 740 trucks hauled drain cover fill (DCF)to the PSSA. Haul roads for the Cat 740s were maintained at least 4 feet above the secondary geomembrane. Drain cover fill was placed on approved primary liner in minimum 2-foot lifts in the PSSA on panels P1 to P3; P8 to P10; P17 to P20; P159 to P213; and P218 to P225. HVSCS piping was also laid out on the ADR ramp per the design drawings. II) Storm Water Management Best Management Practices (BMPs) are being performed. COA ACTIVITIES: I) Field Activities: Field activities and observation during this reporting period included: Slope grading and fill placement; underground working remediation and confirmatory drilling; geomembrane deployment, testing, repair monitoring, and certification; LVSCF acceptance for primary liner deployment; and LVSCF and DCF sampling. 2014 09 20-MLE2 WEEKLY FINAL Page 3 of 7