2013-01-10_REPORT - M1980244

• Permit No: M1980244
• IBM Index Class Name: REPORT
• Doc Date: 1/10/2013
• Doc Name: Weekly CQA Rpt.- AMEC Mill Site Earthworks, Wks. Ending 12/22/12 & 12/29/12.
• From: CC&V
• To: DRMS
• Email Name: TC1
• Media Type: D
• Archive: No

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C) Soil Liner Fill (SLF)
Soil liner fill placement is complete for the Mill Site Earthworks project. This figure has been
removed from the weekly reports.
Location
This Week
Cumulative
Comments
(tons)
(tons)
E.Cresson Clay Process
0
81,150
SLF processing is temporarily paused
Total
0
81,510
SLF processing is temporarily paused
D) Drain Cover Fill (DCF)
Drain cover fill (DCF) placement performed in the area shown on Figure 2. The DCF was hauled
from the processing area to the placement area using 40 -ton articulating haul trucks loaded by a
CAT 988 (250703) and a CAT 992 (250601) front -end loader. The DCF was placed in a 2 -foot lift
using various CAT dozers except where haul routes were established. Haul routes consisted of
four -foot lifts to be spread into 2 -foot lifts later. Laborers were present at all times during
placement removing debris /sandbags and assisting the dozer operator with lift thickness. All DCF
was placed on previously approved primary geomembrane. AMEC field representatives
monitored the DCF placement constantly.
Temperatures were monitored by an AMEC field representative prior to fill placement when
ambient temperatures were below 32 °F. We informed CC &V and Ames of fill material below 32 °F.
Fill temperatures averaged between 29 °F and 33 °F
Location
This Week
Cumulative
Comments
(tons)
(tons)
DCF Process
0
228,613
DCF processing is temporarily paused
Total
0
228,613
DCF processing is temporarily paused
II) Geosynthetics
A) Geomembrane
No work performed during the week.
III) Storm Water Management
A) Best Management Practices (BMP)
Best Management Practices are being observed throughout the Mill Site Earthworks project.
IV) MSE Wall Construction
Wall #1
Installation of wall components was performed for Mat's 20 and 21. An amec field representative
inspected and approved placed backfill materials, which was determined acceptable per the plans
and specifications to continue with the installation of the remaining wall components. In addition
to the main wall construction, the contractor began constructing the wing -wall portion of the MSE
wall on both the North and South ends. Mats were constructed until full tie -in was completed to
the main portion of the wall.
MEW Weekly Report WE 12.22.2012.docx