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Days <br />S <br />M <br />T <br />W <br />T <br />F <br />S <br />Work Shifts <br />D <br />D <br />D <br />D <br />D <br />D <br />D <br />- <br />N <br />N <br />N <br />N <br />N <br />N <br />D = Day Shift <br />N = Night Shift <br />MILL SITE EARTHWORKS FIELD MONITORING SUMMARY (WEEKLY REPORT) <br />Project Title: Mill Site Earthworks <br />Owner: Cripple Creek & Victor Gold Mining Co. <br />Location: Cripple Creek & Victor Gold Mine <br />Work Element: Mill Site Earthworks <br />Date: October 20, 2012 <br />Reporting Period: 10/14/2012 through 10/20/2012 <br />Ambient Temperature Range ( °F): <br />Project No.: 74201125K0 <br />Contractor: Ames Construction Co., Inc. <br />Shift: Day /Night <br />Low: 27 °F to 39 °F ( + / -) High: 45 °F to 62 °F ( + / -) <br />AMEC CQA: Personnel On -site through the Reporting Period (See Attachment A). <br />Ames: None <br />CONSTRUCTION ACTIVITIES and PROGRESS: <br />amee <br />I) Earthworks <br />A) Subgrade Preparation <br />Subgrade preparation was performed preparing for soil liner fill placement. Moisture conditioning <br />of the subgrade was performed (when necessary) using a tandem -axle water truck. Compaction <br />was performed using a 10 -ton vibratory smooth drum compactor passing over the entire subgrade <br />surface at least four times. The subgrade shown on Figure 2 was inspected and approved by an <br />AMEC field representative for SLF placement. <br />B) Overburden Fill Placement <br />Overburden fill material was delivered from CC &V Mine Operations throughout the day shift. An <br />Ames CAT D -10 dozer was used to maintain the borrow area. A CAT 992 and CAT 988 front -end <br />loader were used to load overburden fill material into CAT 40 -ton articulating haul trucks. <br />Overburden fill was placed in the areas shown on Figure 1. DCF depth was checked by survey <br />and the area was approved prior to fill placement above DCF. Overburden fill was placed in 36" <br />to 40" lifts using various CAT dozers. Each lift was moisture conditioned using a tandem axle <br />water truck (when necessary) and compacted using a 10 -ton vibratory smooth drum compactor, <br />passing over the entire fill surface at least 4 times (method compaction technique was applicable). <br />Subgrade temperatures were monitored by an AMEC field representative prior to fill placement <br />when ambient temperatures were below 32 °F. Fill material was not placed until the entire fill area <br />was at or above 32 °F. Fill material placed during ambient temperatures below 32 °F averaged <br />49 °F to 52 °F. <br />MEW Weekly Report WE 10.20.2012 <br />