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HEPWORTH - PAWLAK GEOTECHNICAL, INC. <br />REPORT OF FIELD NUCLEAR DENSITY TESTING <br />~: ITEC Environmental Colorado, Inc. JOB NO. 298 187 <br />c/o McCulley, Frick & Gilman, Inc. DATE: 9/10/98 <br />Attn: Jon Friedman DAILY REPORT #8 <br />4900 Pearl East Circle, Suite 300w PAGE 1 of 1 <br />Boulder CO 80301 <br />~OJECT: Cash Mine Redevelopment near Gold Hill, CO (Raise existing tailings embankment) <br />ERAL CONTRACTOR: ITEC Environmental Colorado, Inc. <br />E AND NUMBER OF EARTH MOVING UNITS: 111 Dozer <br />EARTHWORK CONTRACTOR: Len's Excavating, <br />THICKNESS OF LIFT: Not Observed <br />& p OF COMPACTION UNITS: 111 Track Loader <br />NUMBER OF PASSES: Aa Neaded <br />C~VIPACTION STANDARD : ASTM D-1557 (MODIFIEDI. 90%, t 2% OMC <br /> TEST LOCATION DEPTH LABORATORY FIELD % MIN % SOIL TYPE <br /> O. OR COMP COMP <br /> FROM POWER POLE ELEV MAX DRY OPi DAY MOIST % REG <br /> DENS cl MOIST % DENS cl <br /> 34 110' N.E., 50' N.W. 9412 137.1 5.8 123.7 5.9 90 90 Silty Gravelly Sand <br /> 35 65' N.E., 52' N.W. 8412 125.9 6.0 92 90 Silty Gravelly Sand <br /> 36 52' N.W. of Power Pole 8412 140.0 5.0 130.1 5.2 93 90 Silty Gravel & Sand <br /> 37 59' S.W., 51' N.W. 8412 137.1 5.9 126.1 5.6 92 90 Silty Gravelly Sand <br /> 38 90' S. W., 52' N.W. 8412 140.0 5.0 146.9 4.6 100 90 Silty Gravel & Sand <br /> RT TIME OBSERVATION <br />~ <br /> IS REPORT PRESENTS OPINIONS FORMED AS A RESULT OF OUR OBSERVATIONS OF FILL PLACEMENT, WE HAVE RELIED ON THE CONTRACTOR TO CONTINUE <br />APPLYING THE R:~OMMENDED COMPACTIVE EFFORT AND MOISTURE TO FILL DURING THE TIMES WHEN OUR OBSERVER IS NOT OBSERVING OPERATIONS. <br /> 'HE NUCLEAR DENSOMETER METHOD OF TESTING WAS USED IN SUBSTANTIAL ACCORDANCE WITH ASTM D2992 AND D3017 <br /> PRELIMINARY OBSERVATIONS AND/OR TEST RESULTS VERBALLY REPORTED T0: Len w/Lens Excavating <br /> <br /> 'ROGRess REPORT: The tests were taken in the tailings pond embankment fill, the locations were referenced to the power <br /> pole. The dozer was down for repairs. Len stated that he would be setting up a screening plant most of the day and <br /> ~at he would call us if needed on 9/14/98. <br /> 1 <br /> OPIES: <br /> navo Caeeiriy r.., aaAy <br /> <br /> FIELD OBSERVER REVIEWED BY <br />I, <br />