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amecO <br />D) Soil Liner Fill <br />1) VLF <br />Soil liner fill (SLF) placement continued in the areas shown on Figure 2. Subgrade was <br />approved and moisturized prior to placement using a tandem-axel water truck. Placement was <br />performed using various CAT dozers in a one-foot compacted lift. Moisture conditioning of <br />SLF material was performed using a tandem-axel water truck and compaction was achieved <br />using a 10-ton vibratory smooth drum compactor. Nuclear density testing, moisture <br />verification, and depth checks produced results within project specifications. Test locations <br />were surveyed by Ames. <br />E) High Volume Solution Collection System <br />1) High Volume Solution Collection Piping <br />Placement of the high volume collection system continued at the DCF placement area shown <br />on Figures 5a and 5b, advancing in front of the placement. CPeP was placed and sandbagged in <br />accordance with design drawings and project specifications. <br />2) Drain Cover Fill (DCF) <br />Drain cover fill (DCF) placement within the Phase 5 VLF continued. DCF was placed in the <br />area show on Figures 5a and 5b. The DCF was hauled from the processing area to the <br />placement area using CAT 740 haul trucks. The DCF was placed in a 2-foot lift using various <br />CAT dozers except where haul routes were established. Haul routes consisted of five-foot lifts <br />to be spread into 2-foot lifts later. Laborers were present at all times during placement holding <br />the high volume collection piping in place, removing debris/sandbags, and assisting the dozer <br />operator with lift thickness. All DCF was placed on previously approved primary <br />geomembrane. AMEC field representatives monitored the DCF placement constantly. DCF <br />placement within the PSSA is complete. <br />3) Ore Placement <br />Loading of the Phase 5 PSSA continued using a CAT D-9 LGP dozer. Twenty feet of cover <br />was then verified, by survey, prior to mine haul trucks crossing over the geomembrane. The <br />toes of the ramp were surveyed ensuring twenty feet of cover, in haul areas, during placement. <br />An AMEC field representative was present during ore placement both day and night shift. <br />F) Leak Detection System <br />1) VLF <br />A portion of the leak detection system was installed between stations K2+00 (+/-) to K7+00 <br />(+/-) approximately 100 left of centerline. The 1'x1' trench was excavated using a CAT 312 <br />excavator. 40mi1 HDPE geomembrane and 12oz/ftz geotextile were placed in the trench. <br />Three-inch CPe pipe was then placed over the geotextile. Approved leak detection fill (LDF) <br />was placed in the trench using a CAT 950 front-end loader and laborers. The geotextile was <br />wrapped and overlapped, encapsulating the LDF and 3" CPe pipe. SLF material was then <br />placed over the trench. Leak detection trench construction was observed and inspected by an <br />AMEC field representative and found to be constructed in accordance with design drawing and <br />project specifications. <br />VLF Weekly Report WE 11.06.10.