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' ~ HEPWORTH - PAWLAK GEOTECHNICAL, INC. <br />REPORT OF FIELD NUCLEAR DENSITY TESTING <br />1~: ITEC Environmental Colorado, Inc. JOB N0. 298 187 <br />cio McCulley, Frick & Gilman, Inc. DATE: 8/26/98 <br />' Attn: Jon Friedman DAILY REPORT # 3 <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 />G ERAL CONTRACTOR: ITEC Environmental Colorado, Inc. EARTHWORK CONTRACTOR: Len's Excavating, <br />T PE AND NUMBER OF EAATH MOVING UNITS: 111 Dozer THICKNESS OF LIFT: 1' <br />T~ & p OF COMPACTION UNITS: (11 Track Loader NUMBER OF PASSES: As Needed <br />C~PACTION STANDARD : ASTM D-1557 (MODIFIEDI. 90%, t 2% OMC <br />TEST LOCATION DEPTH LABORATORY FIELD % MIN % SOIL TYPE <br />O. OR COMP COMP <br /> ELEV MAx DflY OrT DAY MDIST % RED. <br /> DENS cl MOI6T % DENS C <br />7 75' N.E., 22' N.W. 8400 130.4 7.7 128.3 7.0 98 90 Silty Gravelly Sand <br />8 20' N.E., 24' N.W. 8398 123.8 6.9 95 90 Silty Gravelly Sand <br />9 30' S.W., 22' N.W, 8399 124.5 7.5 96 90 Silty Gravelly Sand <br />10 88' S.W., 26' N.W, 8400 137.1 5.8 130.0 7.7 95 90 Silty Gravelly Sand <br /> <br />~RT TIME OBSERVATION <br />THIS REPORT PRESENTS OPINIONS FORMED AS A RESULT OF OUR OBSERVATIONS OF FILL PLACEMENT, WE HAVE RELIED ON THE <br />NTRACTOR TO CONTINUE APPLYING THE RECOMMENDED COMPACTIVE EFFORT AND MOISTURE TO FILL DURING THE TIMES WHEN OUR <br />~ <br />SERVER IS NOT OBSERVING OPERATIONS. <br />THE NUCLEAR DENSOMETER METHOD OF TESTING WAS USED IN SUBSTANTIAL ACCORDANCE WITH ASTM D2992 AND D3017 <br />ELIMINARY OBSERVATIONS AND/OR TEST RESULTS VERBALLY REPORTED TO: Len w/Len's Excavating <br />PRDGRess REPORT: The tests were taken in the tailings pond embankment fill. All tests were referenced off the power <br />~le. <br />Len informed us that his lift thickness was one foot, minus and that the cut areas were watered prior to placement of <br />~I. <br />COPIES: <br /> rTAVP r~ACCI(~V. _IiM RIP\, <br /> FIELD OBSERVER REVIEWED BY <br />u <br />