2012-08-24_REPORT - M1980244 (16)

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_ o L WTI 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: January 21, 2012 Reporting Period: 1/15/2012 through 1/21/2012 Days S M I T W I T F S Work Shifts - D D D D D D - - 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: 4 °F to 24 °F ( + / -) High: 17 °F to 49 °F AMEC CQA: Personnel On -site through the Reporting Period (See Attachment A). Ames: None CONSTRUCTION ACTIVITIES and PROGRESS: I) Earthworks A) Topsoil Stripping Topsoil stripping within the Mill Site footprint was performed using various CAT dozers pushing the material into stockpiles. The stockpiles were loaded into 40 -ton articulating haul trucks using a CAT 385 excavator and a John Deere 850 excavator. The topsoil was placed in a stockpile area designated by CC &V. The stockpile area was maintained using various CAT dozers. B) Clear and Grub Clear and grub activities were performed by Seedmasters for the Mill Site Earthworks project. Two John Deere 135 excavators and a CAT D -6 dozer were used to removing trees and shrubs from the area. These trees and shrubs will be hauled to the topsoil stockpile area designated by CC &V and will be chipped and mixed into the topsoil as it is placed. C) Subgrade Preparation Subgrade preparation was performed prior to structural 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 tandem axle 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 MEW Weekly Report WE 01.21.2012