2011-09-14_REPORT - M1980244

• Permit No: M1980244
• IBM Index Class Name: REPORT
• Doc Date: 9/14/2011
• Doc Name: Weekly Construction Quality Assurance ‎("CQA")‎ Reports: Weeks of 8/14, 8/21, and 8/28/2011.
• From: CC&V
• To: DRMS
• Type & Sequence: AM9
• Email Name: BMK
• Media Type: D
• Archive: No

Location
This Week
(tons)
Cumulative
(tons)
Comments
DCF Process
29,303
293,860
Total
29,303
293,860
D) High Volume Solution Collection System
1) High Volume Solution Collection Piping
Placement of the high volume collection system continued at the DCF placement area shown
on Figure 5, advancing in front of the placement. CPeP was placed and sandbagged in
accordance with design drawings and project specifications.
2) Drain Cover Fill (DCF)
Drain cover fill (DCF) placement within the Phase 5 VLF continued. DCF was placed in the
areas shown ,on Figure 5. The DCF was hauled from the processing area to the placement area
using 40 -ton articulating haul trucks. The DCF was placed in a 2 -foot lift using various CAT
dozers except where haul routes were established. Haul route consisted of five -foot lifts to be
spread into 2 -foot lifts later. Laborers were present at all times during placement holding the
high volume collection piping in place, 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.
E) Leak Detection Trench
1) VLF
A portion of the leak detection system was installed between stations E22 +80 ( + / -) to E23 +10
( + / -) approximately 100 left of centerline and between stations A37 +00 ( + / -) and A41 +00
( + / -), approximately 250 feet left of centerline. The 1'xl' trench was excavated using a CAT
312 excavator. 40mil HDPE geomembrane and 12oz /ft geotextile were placed in the trench.
Three -inch CPe pipe was then placed over the geotextile. Approved leak detection fill (LDF)
was placed in the trench using a skid steer loader and laborers. The geotextile was wrapped and
overlapped, encapsulating the LDF and 3" CPe pipe. SLF material was then placed over the
trench. Near station E23 +00 ( + / -), the leak detection was placed under the anchor trench. A
SLF plug was also placed under the anchor trench encapsulating a 3" SDR 13.5 solid HDPE
pipe. The transition between CPe and solid pipe was performed using a 3" split coupler. Leak
detection trench construction was observed and inspected by an AMEC field representative and
found to be constructed in accordance with design drawing and project specifications.
II) Storm Water Management
A) Best Management Practices
Best Management Practices are being observed throughout the Phase 5 VLF Project.
III) Material Processing
A) Drain Cover Fill Process Area
Processing of Drain Cover Fill (DCF) continued at the DCF process area using a dozer.
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VLF Weekly Report WE 08.20.2011