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' ~ HEPWORTH - PAWLAK GEOTECHNICAL, INC. REPORT OF FIELD NUCLEAR DENSITY TESTING T': ITEC Environmental Colorado, Inc. JOB NO. 298 187 c/o McCulley, Frick & Gilman, Inc. DATE: 8/27/98 ' Attn: Jon Friedman DAILY REPORT # 4 4900 Pearl East Circle, Suite 300w PAGE 1 of 1 Boulder, CO 80301 P~OJECT: Cash Mine Redevelopment near Gold Hill, CO (Raise existing tailings embankment) G~RAL CONTRACTOR: ITEC Environmental Colorado, Ina. EARTHWORK CONTRACTOR: Len's Excavating, TYPE AND NUMBER OF EARTH MOVING UNITS: 111 Dozer THICKNESS OF LIFT: Not Observed & p OF COMPACTION UNITS: 111 Track Loader NUMBER OF PASSES: As Needed C~PACTION STANDARD : ASTM D-1557 (MODIFIEDI, 90%, t 2Yo OMC TEST LOCATION DEPTH LABORATORY FIELD % MIN % SOIL TYPE O. OR COMP COMP ELEV MA%DAY DENS cl orr MOIST % oar DENS cl Mo15Tx REQ. 11 120' N.E., 40' N.W. 8404 130.4 7.7 122.5 7.1 94 90 Silt Gravell Sand 2 100' N.E., 40' N.W. 8402 123.0 7.0 94 90 Silt Gravell Sand 13 48' N.E., 38' N.W. 8403 137.1 5.8 130.4 7.2 95 90 Silt Gravell Sand 4 30' N.E., 42' N.W. 8404 129.3 7.6 94 90 Silt Gravell Sand 5 36' N.W. of ower ole 8402 130.4 7.7 123.2 7.0 95 90 Silt Gravell Sand 16 45' S.W., 38' N.W. 8404 127.3 7.4 98 90 Silt Gravell Sand 7 60' S.W., 38' N.W. 8402 126.8 7.1 97 90 Silt Gravell Sand 18 105' S.W.. 38' N.W. 8404 130.4 7.7 127.4 7.1 48 90 Silt Gravell Sand RT TIME OBSERVATION THIS REPORT PRESENTS OPINIONS FORMED AS A RESULT OF OUR OBSERVATIONS OF FILL PLACEMENT, WE HAVE RELIED ON THE NTRACTOR TO CONTINUE APPLYING THE RECOMMENDED COMPACTIVE EFFORT AND MOISTURE TO FILL DURING THE TIMES WHEN OUR SERVER IS NOT OBSERVING OPERATIONS. THE NUCLEAR DENSOMETER METHOD OF TESTING WAS USED IN SUBSTANTIA L ACCORDANCE WITH ASTM D2992 AND D3017 ELIMINARY OBSERVATIONS AND/OR TEST RESULTS VERBALLY REPORTED T0: oGRESS REPORT: The tests were taken in the tailing pond embankment fill, all test locations were referenced off the ~ war pole. PIES: ' n a~a raccirly ~ lim Rilw FIELD OBSERVER REVIEWED BY