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MAY.28 '96 9:05AM DMG,GJCT 1 303 2410336 P.4 <br /> May 28, 1996 <br /> TO: All Bidders; Coal Basin Rock Tunnel Entry Project <br /> FROM: Steve Renner, Project Manager <br /> RE: Amendment Number 1 to PXA-6-372 <br /> Thank you for attending the Pre-bid meeting on May 24, 1996. A <br /> revised Bid Schedule and a copy of the sign in sheet are attached. <br /> The following amendments and clarifications should be incorporated <br /> into the Invitation for Bid: <br /> 1. The fine grained limestone material (rock dust) located at the <br /> eastern portion of the project area near the fallen hopper, shall <br /> be removed and utilized in the reclamation project. The area of <br /> the fallen . hopper shall be lightly graded to conform with <br /> surrounding topography. Coal fines located outside the entries <br /> shall be pushed to the highwall and covered by other earthen <br /> materials. <br /> 2. Material needed for backfilling the highwall shall be <br /> excavated from the following areas (excavation of the first area <br /> shall be completed prior to excavating from the next area) : <br /> Surface channel to be constructed; <br /> North Fork Dutch Creek slopes; <br /> Dutch Creek slopes downstream of the Waste Rock Dump culvert <br /> Dutch Creek slopes upstream of the Waste Rock Dump culvert <br /> 3. Demolition of the fan housing foundation (above entries) may <br /> be accomplished to ground surface, rather than to three feet (31 ) <br /> below ground surface. <br /> 4. The slope of the highwall backfill may be constructed so that <br /> slopes are gentler (less steep) than 2H:1V. Compaction and other <br /> pertinent backfilling and demolition specifications are unchanged. <br /> 5. The forty eight inch (4811) holes to be driven through the <br /> existing block walls within the entries may be completed at any <br /> time during completion of the project. The tunnel drainage must <br /> continue to flow unimpeded through the existing discharge system <br /> until completion of the project. <br /> 6. The project area will be ripped to a minimum fifteen inch <br /> (1511) depth immediately prior to initiating revegctation <br /> operations. The project area includes the entry area north of the <br /> main east-west haul road, from the tunnel entries to the'North Fork <br />