2014-07-01_REPORT - M1980244

• Permit No: M1980244
• IBM Index Class Name: REPORT
• Doc Date: 7/1/2014
• Doc Name: Weekly CQA Report: Week ending 06/21/14.
• From: CC&V
• To: DRMS
• Email Name: TC1
• Media Type: D
• Archive: No

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from these areas were transported to the buttress fill area upslope of stations J12+00 to J14+00
and downslope of stations J16+00 to J20+00 where it was placed as structural fill by Cat dozers.
Rip rap was loaded into Cat 740 haul trucks from the rip rap plant and transported to the Phase 2
diversion channel. Geotextile fabric and rip rap were placed on top of approved subgrade by a
Cat excavator from STA 20+00 to 28+00.
A Cat 330 excavator hammered oversized rock on the northern slope of the PSSA.
Subgrade slope finishing and contouring occurred at various locations below elevation 9,450 on
the PSSA slopes. Excess cut was stockpiled at the toe of the slope for later removal.
A Cat smooth drum roller compacted subgrade in various areas within PSSA and surrounding
Phase 1 slopes.
A Cat excavator continued anchor trench excavation on the 9,450 elevation above the ADR
Platform.
Subgrade:
The following subgrade areas in the PSSA were compacted per project specification to finished
grade, inspected and certified for soil liner fill (SLF) placement:
From the A Bench (9,450 elevation)to the PSSA floor between approximate stations
A8+00 to Al2+00
From the B Bench (9,450 elevation) to the PSSA floor between approximate stations
B6+00 to B8+00
See the attached subgrade acceptance map for all accepted subgrade locations.
Soil Liner Fill (SLF):
SLF was placed and compacted per project specification; then, inspected, tested and certified in
compliance with technical specifications in the following areas:
PSSA embankment.
From STA BO+00 to B5+00 and downslope to the PSSA floor.
See the attached SLF acceptance map for all accepted locations.
SLF from the Squaw Gulch stockpile was hauled to northern and southern inboard slopes and to
the PSSA floor. The material was placed on the approved slope subgrade and placed as fill and
also stockpiled on the PSSA floor for later use in the area. The southern Squaw Gulch stockpile
has been depleted. Cut operations have begun into native ground.
SLF was placed in a loose lift approximately 1.5 feet thick on the approved subgrade by Cat GPS
dozers and 740 Haul Trucks.
SLF finishing and contouring occurred on the SLF at the western PSSA slopes and across the
PSSA embankment.
SLF Processinq:
Cameron Site: No soil liner fill mining or processing occurred at the Cameron Site.
Approximately 244,860 tons of SLF material has been produced and remains stockpiled at the
Cameron Site for future use. The soil liner fill processing equipment was transferred back to the
Cameron site. No new processing during this reporting period.
Squaw Gulch Borrow Site: No soil liner fill mining or processing occurred at the Squaw Gulch
Clay Borrow Site. Approximately 143,198 tons of soil liner fill material was produced and is
currently being used in the PSSA.
2014.06.21-mle2 weekly final Page 2 of 7