2012-08-24_REPORT - M1980244 (11)

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Ah 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: March 17, 2012 Reporting Period: 3/11/2012 through 3/17/2012 Days S M T W T F S Work Shifts D D D D D D D N N N N N N N D = Day Shift N = Night Shift Project No.: 84201125K0 Contractor: Ames Construction Co., Inc. Shift: Day /Night Ambient Temperature Range (F): Low: 23 °F to 33 °F ( + / -) High: 46 °F to 54 °F AMEC CQA: Personnel On -site through the Reporting Period (See Attachment A). Ames: No work activities were performed during dayshift on Sunday (3/11/2012) due to snowfall and slick haul routes. Work activities resumed at the beginning proceeding night shift. CONSTRUCTION ACTIVITIES and PROGRESS: I) Earthworks A) Topsoil Stripping No work performed during the week. B) Clear and Grub Chippings from clear and grub activities were loaded into CAT 40 -ton articulating haul trucks and hauled to the topsoil stockpile designated by CC &V. Q Subgrade Preparation Subgrade preparation was performed prior to overburden fill placement in the areas shown on Figure 1. Various CAT dozers were used to rip the existing surface to a depth of at least 6 inches. Moisture conditioning of the subgrade was performed (when necessary) using a CAT 773 water truck. Compaction was performed using a 10 -ton vibratory smooth drum compactor passing over the entire subgrade surface at least four times. The subgrade was inspected and approved by an AMEC field representative, prior to fill placement. In most areas, excluding flat areas were fills are started, the subgrade is keyed into as the fill progress. This is due to steep slopes that are adjacent to most fill areas. In this instance, the subgrade is inspected for organics and debris by an AMEC field representative prior to fill placement (keying into the subgrade). MEW Weekly Report WE 03.17.2012