Laserfiche WebLink
_r. <br />Aar% <br />amec <br />Earth & Environmental <br />Material suitable for Structural Fill from the aforementioned cut areas was hauled to the Phase <br />5 VLF fill areas between stations K3+00 to K9+00 approximately 0 to 100 ft right of <br />centerline. <br />Rockbreakers drilled shot holes on the LOB Delivery Road cut between stations 0+75 (+/-) to <br />2+00 (+/-), approximately 40 to 50 feet left of centerline. This area was shot on Thursday. <br />Rockbreakers used between one and four Tamrock track mounted drill rigs to complete the <br />drilling. <br />B) Cut to Fill <br />1) LOB Delivery Road <br />Oversize material was placed beyond the end of the LOB Delivery Road (beyond station <br />44+47.34). <br />Finish grading of the entire LOB Delivery Road width was performed between stations 4+00 <br />(+/-) and 14+00 (+/-). Finer grained materials from the Delivery Road cut areas were placed in <br />4" to 12" lifts using a CAT D-8 dozer. <br />2) LOB Conveyor Corridor/Transfer Station <br />Backfilling of the Transfer Station #5 retaining wall was completed. Structural backfill <br />material was hauled to the Transfer Station #5 pad using available 40-ton articulating haul <br />trucks. The material was placed in 6" compacted lifts using a CAT 966 front-end loader and a <br />CAT 320 excavator. The material was moisture conditioned and compacted using a CAT 563 <br />vibratory smooth drum roller and a walk-behind vibratory sheep's foot compactor. Density <br />testing was not performed due to the material being too coarse. Finer material (2" minus) from <br />the Arequa Process Stockpile was hauled and placed against the structure. The material was <br />placed in 6" compacted lifts using a CAT 966 front-end loader and a CAT 320 excavator. Each <br />lift was moisture conditioned and compacted using a walk-behind vibratory sheep's foot <br />compactor. A berm was placed over the remaining exposed portion of the wall to protect the <br />structure from blasting near the area. Eleven nuclear density tests were performed with results <br />averaging 97% of maximum dry density and at or near optimum moisture content. Moisture- <br />density compaction testing was performed in accordance with ASTM D-1557-07. Nuclear <br />density testing was performed in accordance with ASTM D-2922 & 3017. <br />Drilling of a blast pattern just north of the Transfer Station #5 began using one track mounted <br />drill rig. The blast between Transfer Stations #5 and #6 is scheduled next week. <br />C) LOB Pad Structural Fill <br />No work performed throughout the week. <br />D) MSE Walls <br />1) MSE Wall #2 <br />Construction of MSE Wall #2 was completed this week. Hilfiker Wall Backfill material was <br />hauled up to the LOB Pad area using available 40-ton articulating haul trucks, loaded by a <br />CAT 966 front-end loader. The material was then delivered to the wall using a CAT 966 front- <br />end loader and spread into 8" compacted lifts. The material was moisture conditioned and <br />Sheet 2 of 9 <br />LOB Weekly Report WE 05.30.09.D.doc