2012-11-15_REPORT - M1980244 (5)

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Pon AS MILL SITE EARTHWORKS FIELD MONITORING SUMMARY (WEEKLY REPORT) Project Title: Mill Site Earthworks Owner: Cripple Creek & Victor Gold Mining Co Location: Cripple Creek & Victor Gold Mine Work Element: Mill Site Earthworks Date: November 3, 2012 Reporting Period: 10/28/2012 through 11/3/2012 Days S M T I W I T F S Work Shifts D D D D D - - - N N N N - - D = Day Shift N = Night Shift Project No.: 74201125KO Contractor: Ames Construction Co., Inc. Shift: Day /Night Ambient Temperature Range (°F): Low: 25 °F to 35 °F ( + / -) High: 45 °F to 57 °F AMEC CQA: Personnel On -site through the Reporting Period (See Attachment A). Ames: Ames paused construction activities after night shift on Thursday, November 1, 2012 due to a prescheduled event. Work activities will resume Monday, November 5, 2012. CONSTRUCTION ACTIVITIES and PROGRESS: I) Earthworks A) Subgrade Preparation Subgrade preparation or acceptance were not performed during the week. Previously approved subgrade is shown on Figure 2. Subgrade preparation is complete. B) Overburden Fill Placement Overburden fill material was delivered from CC &V Mine Operations throughout the day shift. An Ames CAT D -10 dozer was used to maintain the borrow area. A CAT 992 and CAT 988 front -end loader were used to load overburden fill material into CAT 40 -ton articulating haul trucks. Overburden fill was placed in the areas shown on Figure 1. DCF depth was checked by survey and the area was approved prior to fill placement above DCF. Overburden fill was placed in 36" to 40" lifts using various CAT dozers. Each lift was moisture conditioned using a tandem axle water truck (when necessary) and compacted using a 10 -ton vibratory smooth drum compactor, passing over the entire fill surface at least 4 times (method compaction technique was applicable). Subgrade temperatures were monitored by an AMEC field representative prior to fill placement when ambient temperatures were below 32 °F. Fill material was not placed until the entire fill area was at or above 32 °F. Ambient temperatures remained above 32 °F during all shifts. C) Slope Contouring No work performed during the week. MEW Weekly Report WE 11.03.2012