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ameO <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: July 14, 2012 <br />Reporting Period: 718/2012 through 7114/2012 <br />Days <br />S <br />i M <br />T <br />W <br />T <br />I F <br />S <br />Work Shifts <br />- <br />D <br />D <br />D <br />D <br />D <br />D <br />- <br />N <br />N <br />N <br />N <br />- <br />- <br />D = Day Shift N = Night Shift <br />Project No.: 74201125K0 <br />Contractor: Ames Construction Co., Inc. <br />Shift: Day /Night <br />Ambient Temperature Range (°F): Low: 44 °F to 56 °F ( + / -) High: 60 °F to 76 °F <br />AMEC CQA: Personnel On -site through the Reporting Period (See Attachment A). <br />Ames: None <br />CONSTRUCTION ACTIVITIES and PROGRESS: <br />I) Earthworks <br />A) Subgrade Preparation <br />Subgrade preparation was performed prior to overburden fill placement in the areas shown on <br />Figure 1. Various CAT dozers were used to rip the existing surface to a depth of at least 6- inches. <br />Moisture conditioning of the subgrade was performed (when necessary) using a CAT 773 water <br />truck. Compaction was performed using a 10 -ton vibratory smooth drum compactor passing over <br />the entire subgrade surface at least four times. The subgrade was inspected and approved by an <br />AMEC field representative, prior to fill placement. <br />In most areas, excluding flat areas where fills were started, the subgrade is keyed into as the fill <br />progresses. This is due to steep slopes that are adjacent to most fill areas. In these instances, the <br />subgrade is inspected for organics and debris by an AMEC field representative prior to fill <br />placement (keying into the subgrade). <br />B) Overburden Fill Placement <br />Overburden fill material was delivered from CC &V Mine Operations throughout both day and night <br />shifts. Ames CAT D -10 dozers were used to maintain the borrow area. A CAT 993 front -end <br />loader and a CAT 992 front -end loader were used to load overburden fill material into CAT 40 -ton <br />articulating, CAT 773 and CAT 777 haul trucks. <br />Overburden fill was placed in the areas shown on Figure 1. Overburden fill was placed in 36" to <br />40" loose lifts using various CAT dozers, keying into existing slopes when necessary. Various <br />CAT excavators with a hammer attachments "broke up" oversize boulders before they were <br />placed in the fill. Each lift was moisture conditioned using a CAT 773 water truck (when <br />MEW Weekly Report WE 07.14.2012 <br />