2013-08-23_REPORT - M1980244 (4)

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rm-�, TW= Clay Processing: Cameron Site: Overburden removal continued to expose clay at the Cameron site using a Cat 374 excavator with a toothed bucket. The material was loaded into three (3) 740 haul trucks. The extent of the clay seam has been established within the limits of the stripped area at the Cameron site. The overburden excavation was fairly consistent at about 2 to 3 feet in depth and covered approximately 117,000 square feet. The clay seam tappers out to nothing (0 inches thick) on the north, south, and east sides and was found to be at least 10 feet thick in a test pit near the middle of the excavation (N: 4288327, E: 488895). One (1) Cat 374 Excavator was observed removing SLF materials and loading three (3) Cat 740 haul trucks which transported the excavated clay materials to the contractors screening plant for processing. Squaw Gulch Site: Overburden material classified as structural fill from the designated VLF clay borrow site was removed exposing underlying clay seams. Overburden was loaded into four (4) Cat 740 haul trucks by a Cat 345 excavator and hauled to the HWY 67 embankment. Secondary Underdrain: No work was performed on the Secondary underdrain during this reporting period. A total of 1380 feet of Secondary underdrain has been completed. Primary Underdrain: No work was performed on the Primary underdrain during this reporting period. A total of 1280 feet of Primary underdrain has been completed. Temporary Underdrain: Temporary underdrain pipe is installed thru the embankment. No other work occurred during this reporting period. Underdrain Ponds: Concrete for the underdrain Ponds are complete. No other work was performed. Tree /Slash Clearing, Chipping: Seed Masters suspended operations until further notice. B) Underground Workings Confirmatory drilling was not performed during this reporting period.. During this reporting period exploratory excavation was performed on UG working No. 6112, No. 6113, No. 6120, No. 6130, No. 6183, No. 6187 and No. 6189. Sites listed continued further investigation excavation into bedrock as remediation continues or completed during the reporting period as specified. During this reporting period remediation efforts were performed and completed on UG working No.6113, No. 6178, No. 6179, No. 6180, No. 6181, No. 6182, No. 6184, No. 6185, No. 6186, No. 6189, No. 6190, No. 6191 and No. 6192. Sites listed were excavated to practical refusal into rock with varying depths depending on the working remediated. The site for each working was then backfilled in 2 foot loose lifts to approximate planned subgrade elevation using the onsite structural fill (excavated material) and "bucket tamped" with the back of the CAT 330 excavator bucket. All backfill material was free of organic material, ice and snow and are considered remediated as specified. Page 2 of 6 MLE2 WE 07.13.13.doc