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NORTHWEST COLORADO CONSULTANTS, INC. <br /> <br />Project: Haul Road Y-8 <br />Location: Hayden, Colorado <br />Client: Seneca Coal Company <br />Project No.: 95-2384 <br />Report No.: 77 <br />Date: 8/6/96 <br />Time: 1.5 <br />Mileage: 30 <br />Engr./Tech: JK <br />Work Performed: <br />As requested. we visited the project site on this date to conduct nuclear density tests No.'s 153 and 154 on the <br />material placed. Excavation crews placed and compacted on-site borrow fill matenai for the embankment fills far <br />the Sedimentation Pond 010 dam. <br />We also verified that Mirafi 600x geotextile fabric was used as a bamer between natural soils and embankment <br />fills and that Mirafi 1a0N geotextile fabnc is being used in the construction of the washed rock tae drain for the <br />dam. <br />We obtained a sample of on-site borrow material far checkpoint proctor de[ermination. The checkpoint matched a <br />previous curve for this lob. <br />Remarks: <br />The matenai tested generally met project specifications. Compaction ranged from 95% to 96% and moisture <br />contents ranged from 1.4% to 4.1 % below optimum. `Ne advised crews to add moisture to dry matenals before <br />compacting. <br />Please refer to the aRached sheet for results of today s testing. <br />Verbal Discussions: <br />Chuck McCulloh, of Seneca Coal Company, was no[ifiec of toaay's test results. <br />• <br />