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amen <br />Earth & Environmental <br />D) Subgrade Preparation <br />1) VLF <br />Subgrade preparation was performed between stations G12+00 (+/-) and B4+00 (+/-), <br />approximately 100 feet left of centerline to 250 feet left of centerline. This area was ripped to a <br />depth of 6" to 8" using a CAT D-8 dozer. The area was moisture conditioned using a CAT 773 <br />water truck and compaction was performed using a CAT 563 vibratory smooth drum <br />compactor passing over the entire surface at least 4 times. The area was inspected and accepted <br />by an AMEC representative prior to any fill placement. <br />E) Cut to Fill <br />1) VLF <br />A John Deere 850D excavator, a Komatsu 800 excavator, a CAT 375 excavator, and a CAT <br />385 track excavator excavated structural fill material from the following areas: between <br />stations J6+00 (+/-) and J8+00 (+/-), approximately 75 to 100 feet left of centerline; between <br />stations J10+00 (+/-) and J14+00 (+/-), approximately 50 to 100 feet left of centerline; between <br />stations A3+00 (+/-) and A6+00 (+/-), approximately 10 to 40 feet left of centerline; and <br />between stations A14+00 (+/-) and A16+00 (+/-), approximately 40 feet left of centerline to 40 <br />feet right of centerline. The structural fill material was transported using 777 haul trucks and <br />40-ton articulating haul trucks. <br />Structural fill was placed between stations A24+00 (+/-) and A32+00 (+/-), approximately 0 to <br />200 feet left of centerline. Structural fill was placed using CAT dozers in 18" to 24" lifts <br />(based on rock size). Moisture conditioning of the fill was performed using a CAT 773-water <br />truck. Each lift was compacted with a CAT 563 smooth drum vibratory compactor passing <br />over the entire surface at least 4 times (method compaction technique is applicable). <br />Structural fill was placed between stations L0+00 (+/-) and L4+50 (+/-), approximately 0 to <br />200 feet left of centerline. Structural fill was placed using CAT dozers in 18" to 24" lifts <br />(based on rock size). Moisture conditioning of the fill was performed using a CAT 773-water <br />truck. Each lift was compacted with a CAT 563 smooth drum vibratory compactor passing <br />over the entire surface at least 4 times (method compaction technique is applicable). <br />Structural fill was placed between stations J15+00 (+/-) and J19+00 (+/-), approximately 75 <br />feet left of centerline to 75 feet right of centerline. Structural fill was placed using CAT dozers <br />in 18" to 24" lifts (based on rock size). Moisture conditioning of the fill was performed using a <br />CAT 773-water truck. Each lift was compacted with a CAT 563 smooth drum vibratory <br />compactor passing over the entire surface at least 4 times (method compaction technique is <br />applicable). <br />Structural fill was placed between stations A43+00 (+/-) and A44+00 (+/-), approximately 200 <br />to 275 feet left of centerline. Structural fill was placed using CAT dozers in 18" to 24" lifts <br />(based on rock size). Moisture conditioning of the fill was performed using a CAT 773-water <br />truck. Each lift was compacted with a CAT 563 smooth drum vibratory compactor passing <br />over the entire surface at least 4 times (method compaction technique is applicable). <br />Sheet 2 of 7 <br />VLF Weekly Report WE 06.27.09.D.doc