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FOURTH QUARTER 1999 <br />ENGINEIItING INSPECTION <br />EAST YARD AND WEST VALLEY FILL <br />GOB DISPOSAL PILES <br />An application for a Technical Revision was submitted to the Division for a new coal refuse and <br />mine development waste azea The new azea is located to the west of the facilities azea, and will be <br />known as the West Valley Fill. Technical Revision Number 29 was approved in 1997, but due to the <br />timing of the approval, and the necessary requirements to put a contract in place for the work, <br />construction of the West Valley Fill did not begin until 1998. Kiewit Western Company was <br />awarded the contract, and construction was startv~ during the second quarter of 1998. Photographs <br />of the underdrain were taken, and are on file at the mine. Final preparation of the waste area was <br />completed during the third quarter of 1998. I monitored construction of the new waste area on a <br />daily basis, and inspected the azea during the critical construction periods specified by Rule <br />4.09.1(1 I ). To date, no waste material has been placed in the West Valley Fill. <br />~ %. Qom'. ~/7-~) ~7 <br />IIQerSOn r- ~ . ~ <br />~StefCd.:'I~~~~ ;~~ <br />fngigee~ No.i14726 <br />=•_ ; <br />2 <br />~. <br />3737 Hwy 133 PO Box 535 Somerset, Colorado 87434 USA ~~ <br />TEL (97O) 929-5122 FAX (970 ) 929-5177 <br />•__ <br />