2014-10-09_REPORT - M1980244

• Permit No: M1980244
• IBM Index Class Name: REPORT
• Doc Date: 10/9/2014
• Doc Name: Weekly CQA Report: Week ending 09/27/14
• From: CC&V
• To: DRMS
• Email Name: TC1
• Media Type: D
• Archive: No

amec-,,
Destructive samples PDF-122 through PDF-138 were marked for testing. PDF-116 through ;DDF-
126 and PDF-132 through PDF-138 were tested and passed per project technical specifications.
Primary geomembrane was approved for drain cover placement at: 207 east of west end of seam
at panels P-278 through P-234, P-250 through P-291 and east slope panels P-267 through
P-235.
Areas of previously approved 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 approved primary liner.
Secondary 100-mil DSMS LLDPE Liner Installation
A rain event on the evening of September 20, 2014 washed out a small section of the ADR read
and slope into the northwest corner of the PSSA; subsequently, causing washout of finished
LVSCF, tearing, and damage of underlying secondary geomembrane and SLF material. The
damaged secondary liner was removed during the course of this reporting period from the
northwest comer of the PSSA to expose the underlining soil liner fill for repair, re-compaction,
and reconditioning.
D) Low Volume Solution Collection Fill(LVSCF):
PSSA
A Cat mini excavator was used to clean silty material washed down by rain from the low volume
fill. Cat GPS dozers worked previously finished LVSCS grade. Rock and debris that was washed
into the LVSCF was pushed by dozers into a temporary stockpile on the north floor of the PSSA.
A Cat excavator, a dozer, and laborers removed washed out low volume material, debris, and
structural fill from the northwest corner of the PSSA to expose the liner for repair work.
The following low volume solution collection fill (LVSCF) areas in the PSSA were placed to
finished grade per project specifications, inspected, and approved for primary geomembrane
placement:
Between Bench A stations A19+00 to A22+00 to the PSSA floor.
See the attached LVSCF map for all placement and accepted locations for primary geomembrane
deployment.
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 P6; P12 to P18; P23 to P25; P29 to P36; P37 to P48; P50; P52 to P60; P62; P64;
P66; P69 to P71; P73; P164 to P169; P173 to P176; 1187 to P193; P251 to P253; P257 to P259;
P263 to P265: P266 to P275; P277; P280 to P284; P296; P297; P301 to P308; P309 to P311;
P313; P314; P317; P320; P321; P323 and P325.
4-inch and 12-inch ADS HVSCS piping was also laid out on the on the PSSA inboard slopes.
11) Storm Water Management
2014 09 27-MLE2 WEEKLY FINAL
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