2014-09-23_REPORT - M1980244

• Permit No: M1980244
• IBM Index Class Name: REPORT
• Doc Date: 9/23/2014
• Doc Name: Weekly CQA Report: Week ending 09/06/14.
• From: CC&V
• To: DRMS
• Email Name: TC1
• Media Type: D
• Archive: No

ameO
Unsuitable material from the former Highway 67 was removed from the subgrade upslope of
Bench B stations BO+00 to B2+00 in the Phase 1 area. The material was replaced with structural
fill per project specifications.
Subgrade:
Two dozers continued slope grading the subgrade downslope of Bench D stations DD4+00 to
DD16+00 in the Phase 1 area while a Cat hammer hoe broke oversized rock in the subgrade
surface. Portions of the subgrade in this area were compacted with a smooth drum roller
Soil Liner Fill:
Cat 777 haul trucks transported SLF from the Cameron stockpile to a location below Bench F
stations FO+00 to F10+00 in the Phase 1 area on approved subgrade where it was stockpiled for
future use.
Low Volume Solution Collection Fill:
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:
i From the ADR haul road to Bench B between approximate stations B6+00 to B12+00.
From Bench A to the PSSA floor between approximate stations A5+00 to A7+00.
See the attached LVSCF map for all placement and accepted locations for primary geomembrane
deployment.
SLF Processing:
Cameron Site: No SLF mining or processing occurred at the Cameron Site. However, Ames
continued transporting the Cameron stockpiled SLF to a new stockpile located below Bench F
stations FO+00 to F10+00 in the Phase 1 area. The processing equipment remains at the
Cameron site. No new processing was performed during this reporting period.
Underdrain System:
Primary Underdrain: Complete.
Secondary Underdrain: No work was performed during this reporting period.
Tertiary Underdrain: Complete within the PSSA footprint.
B) Underground Workings
Confirmatory drilling occurred at underground workings#UG6200, UG#6429, #UG6313, and UG
#6639. Additional remediation is required.
A dozer and an excavator prepared working UG#6543 for geogrid placement. Further
remediation is required.
Geomembrane:
PSSA
Primary 100-mil DSMS LLDPE Liner Installation
ECA installed 100-mil LLDPE smooth geomembrane at the west slope of PSSA from the ADR
platform to the PSSA floor and south slope from the 9450-foot bench to the closure drain. Panels
P-88 through P-143 were deployed on approved LVSCF. Seventeen full rolls and multiple partial
rolls of 100-mil LLDPE smooth geomembrane were deployed yielding 6,967 lineal feet of fusion
welds for an approximate installed weekly total of 131,400 square feet. Quality control was
2014 0906-MLE2 WEEKLY FINAL Page 2of