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i HEPWORTH - PAWLAK GEOTECHNICAL, INC. <br />REPORT OF FIELD NUCLEAR DENSITY TESTING <br />1`: ITEC Environmental Colorado, Inc. JOB NO. 298 187 <br />c/o McCulley, Frick & Gilman, Inc. DATE: 8/24/98 <br />' Attn: Jon Friedman DAILY REPORT # 1 <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 ANO NUMBER OF EARTH MOVING UNITS: 111 Dozer <br />& q OF COMPACTION UNITS: 111 Traek Loader <br />EARTHWORK CONTRACTOR: Len's Ezeaveting, <br />THICKNESS OF LIFT: Not Observed <br />NUMBER OF PASSES: As Required <br />C1~APACTION STANDARD : ASTM D-1557 IMODIFIEDI, 90%, t 2% OMC <br /> TEST LOCATION DEPTH LABORATORY FIELD % MIN % SOIL TYPE <br /> O. OR COMP COMP <br /> ELEV MA% DAY OPT DAY MOIST % REG <br /> DENS ct MOIST % DENS ci <br /> t 85' S. W., 17' N.W. 8394 137.1 5.8 124.0 5.7 90 90 Silty Gravelly Sand <br /> 2 At power pole, 16' N.W. 8393 130.4 7.7 119.9 5.6 92 90 Silty Gravelly Sand <br /> 3 91' N.E., 14' N.W. 8395 137.1 5.8 130.3 4.3 95 90 Silty Gravelly Sand <br /> PART TIME OBSERVATION <br /> HIS REPORT PRESENTS OPINIONS FORMED AS A RESULT OF OUR OBSERVATIONS OF FILL PLACEMENT, WE HAVE RELIED ON THE <br /> ONTRACTOR TO CONTINUE APPLYING THE RECOMMENDED COMPACTIVE EFFORT AND MOISTURE TO FILL DURING THE TIMES WHEN OUR <br /> 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 ANDlOR TEST RESULTS VERBALLY REPORTED TO: Bill, Len, & Jon (• preliminary) <br /> ROGRESS REPORT: <br /> At the time of our site visit (9:001, Len's Excavating was excavating for the expansion of the Tailings Pond. A lift of fill <br /> as in place on the first bench of the embankment. <br />~ <br /> e tested the first lift of embankment fill for in-place moisture-density and obtained a sample of the embankment fill for <br /> moisture-density relationships (Modified Proctor) and classification, shown on attached Figures 1 and 2. All locations <br /> ere referenced from the power pole. <br /> • Note: Verbal preliminary results were given in the field, based on standard Proctor test performed by Knight Piesold <br /> ^LC, Project #5451.1, 6/8/98. <br /> e discussed the construction schedule with Bill Hamling (Cash Minel, Len Cole (Len's Excavating), and Jon Friedman <br /> FGI• We recommended that the surface of the first lift of embankment fill be watered prior to placement of the next <br /> ~ <br />t. It was agreed that we return on 8/25/98 to test the second lift of embankment fill. <br /> ~OPIES: <br />_lim Riluy nann'c 1-lanncmary~ <br /> _ <br />FIELD OBSERVER REVIEWED BY <br /> <br />