2013-12-04_REPORT - M1980244 ‎(4)‎

• Permit No: M1980244
• IBM Index Class Name: REPORT
• Doc Date: 12/4/2013
• Doc Name: Weekly Construction Quality Assurance
• From: CC&V
• To: DRMS
• Email Name: TC1
• Media Type: D
• Archive: No

&V ameLmr-
A Cat D8T and a Cat D6 dozer worked on constructing the south perimeter road near stations P2 +00 to P12 +00 and
cutting the neighboring slopes to grade. A Cat CS56 smooth drum roller compacted the slope and road surfaces
per method spec.
A Cat D8R and a Cat D9R Dozer were diverting the existing haul road near the Phase 2 surface water diversion
channel and sediment detention pond north of underground working number UG 6239.
A Cat 330 excavator hammer hoe was breaking / grading the slope north of the Cripple Creek side of the Hwy 67
Realignment adjacent to the road way.
Fill material was generated for the ADR Road fill and the Buttress fill area from slope grading near Bench DD north
of the Crib Wall and from the slope above the ADR haul road near station 67 +00 to 72 +00. Fill materials used at the
PSSA toe berm mostly originated from cut removed near Bench A (approximate stations A14 +00 to A16 +00). Fill
material from above Bench A near station Al2 +00 was placed near station A5 +00 to A8 +00.
Clay (SLF) Processing:
Cameron Site: No Clay mining or processing occurred at the Cameron Site. Approximately, 244,860 tons of clay /
soil liner fill (SLF) material have been produced at the Cameron site. SLF produced from the operation remains
stockpiled at Cameron Site for later removal / use.
Squaw Gulch Clay Borrow Site: Clay processing and overburden removal took place at the Squaw Gulch Clay
Borrow Site. Approximately, 3,100 tons of soil liner fill material has been produced at the Squaw Gulch Clay Borrow
Site to date.
Underdrain System:
Secondary Underdrain: No secondary underdrain was installed during this reporting period. Approximately, a
total of 3,854 feet of Secondary underdrain has been completed.
Primary Underdrain: No work was performed on the Primary underdrain during this reporting period. A total of
1,294.60 feet of Primary underdrain has been completed.
Tree /Slash Grubbing and Clearing Chipping:
No grubbing or clearing took place during this reporting period.
B) Underground Workings
Confirmatory drilling was performed on underground working No. 6304. All borehole locations were established on
a 4 -foot center isolating any voids found. Further remediation efforts will be ongoing until remediated. Summary of
the remediation efforts will follow when remediation is completed.
Underground workings No. 6036, 6087, and 6282 were prepared for concrete plug placement.
Concrete plug placement occurred in underground workings No. 6087, U6280 and 6282
Workings 6306 and 6390 were located. Remediation is pending.
Underground working No. 6099, 6103, 6104, U6331, and U6333 were excavated to competent bedrock, then
backfilled and compacted. The workings are considered remediated.
Working UG #6102 was excavated to approximately 20 feet. The bottom of the apparent shaft was not found.
Drilling access was constructed for confirmatory drilling.
C) Highway 67
No significant construction activities occurred at the Hwy 67 Realignment.
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