2014-10-15_REPORT - M1980244

• Permit No: M1980244
• IBM Index Class Name: REPORT
• Doc Date: 10/15/2014
• Doc Name: Weekly CQA Report: Week ending 10/4/14.
• From: CC&V
• To: DRMS
• Email Name: TC1
• Media Type: D
• Archive: No

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two extrusion guns. All seams were fusion welded per project technical specifications. All work
performed was observed by AMEC QA personnel.
Approximately 652 lineal feet of anchor trench was backfilled over primary liner and compacted
per project specifications.
Destructive samples PDF-139 through PDF-155 were marked for testing. PDF-139 through PDF-
143 were tested and passed per project technical specifications. Note that PDF-127 through
PDF-131 were tested and passed per project technical specifications during the previous week.
The anchor trench associated with the newly installed liner was backfilled and compacted per
project specification with structural fill material.
Areas of previously accepted primary geomembrane that were silted over on the floor of the
PSSA were washed and swept. AMEC inspectors confirmed that there was no damage to the
primary liner prior to overliner placement.
See the attached Primary Liner Map for accepted primary liner.
Secondary 100-mil DSMS LLDPE Liner Installation
ECA repaired the secondary 100-mil LLDPE single-side textured geomembrane in the PSSA.
The geomembrane was damaged from a rain event that washed material onto the liner on the
northwest corner. Damaged geomembrane was removed and replaced using 100-mil LLDPE
single-side textured geomembrane on 20 Sep 2014. Panels S-398 through S-409 were deployed
on accepted soil liner fill, panels installed replaced existing panels S-251A through S-255A and S-
259 and S-260 were removed and partial panels of S-250A, S-250 through S-256 and 5-261
through S-275 were removed during the replacement of the damaged liner. One full roll and
multiple partial rolls of 100-mil LLDPE single-side textured geomembrane were deployed yielding
968 lineal feet of fusion welds for an approximate installed weekly total of 9,695 square feet.
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. All
secondary liner within the PSSA including the aforementioned liner repair work was accepted for
drain cover fill.
See the attached figure depicting the secondary liner panels affected by the repair area.
Approximately 50 lineal feet of anchor trench was backfilled over secondary liner and was
compacted per project specifications.
Destructive samples DF-161 through DF-164 and DX-4 were marked and tested. Destructive
samples that were tested passed per project technical specifications.
Boot skirts penetrating the primary liner were welded on the LVSCS riser pipes at the 9,450
elevation at the southeast corner of the PSSA and were spark tested with passing results.
D) Low Volume Solution Collection Fill (LVSCF):
PSSA
Low volume fill that was impacted by debris and deleterious material washed down by a rain
event on the evening of September 20, 2014 was removed and replaced in the northwest corner
of the PSSA. The new fill was finish graded and accepted for Primary liner.
The following LVSCF areas in the PSSA were placed to finished grade per project specifications,
inspected, and accepted for primary geomembrane placement:
Between Bench A stations A14+00 to A19+00 to the PSSA floor.
2014 10 04-MLE2 WEEKLY FINAL Page 3 of