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PIT VOLUME OF COAL SPOIL <br />PIT 1 5,400 placed cu. yos. <br />PIT 2 8,200 placed cu. yds. <br />PIT 3 3,400 placed cu. yds. <br />The above stated volumes have a ratio of 3:5:2 indicating that for every <br />3 yarns of coal spoil placed into PIT 1, 5 yards are placed into PIT2 and <br />2 yards are placed into PIT 3. Coal spoil shall be placed into strip-pits <br />to maximize depth of burial in each pit. It will be noted that the above <br />1 fisted volumes are estimations. On-site approval of coal spoil <br />backfilling by the PROJECT IdANAGER is required before backfilling of <br />overburden material can commence. <br />c) Measurement and Payment <br />There will be no measurement for payment. Payment for this task will be <br />reflected in a lump sum bid under Item 2 on the Bid Schedule. This lump <br />sum bid price will cover payment of all costs for excavation, transport, <br />and backfilling of coal spoil into strip-pits. Payment shall be as this <br />task is completed and approved by the PROJECT MANAGER. Payment for this <br />task shall be made only for that amount shown under Item 2 of the Bid <br />Schedule. Any or all incidental costs incurred by the CONTRACTOR shall <br />be reflected in each Bid Item or shall be paid at the CONTRACTOR'S <br />expense. <br />TASK 3 Overburden Removal, Placement and Grading <br />a) Overburden <br />Following the pre-mining removal of topsoil and subsoil, a series of <br />shales, sandstones and sandy shales were blasted and removed to <br />access underlying coal. This material has been placed in PILE C which <br />has an estimated volume of 75,000 "in place" cubic yards. This material <br />consists of pulverized rock debris and rock fragments. As part of this <br />phase of the project, the CONTRACTOR will use overburden material from <br />PILE C to complete the backfilling of the strip-pits. The CONTRACTOR <br />will determine the most desirable method of removal and transport of <br />material from PILE C, however, overburden shall be removed to reduce <br />overall height of C and not removed from just one end or sides Unused <br />overburden remaining in PILE C will be smoothen to meet final design <br />profile as specified below. Overburden material will be placed into <br />strip-pits to back fill remaining void space. Overburden material will be <br />placed in maximum 2 foot lifts and each individual lift will be wheel <br />compacted. The PROJECT MANAGER will provide control stakes to delineate <br />outer pit margins for backfilling. <br />-7- <br />