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<br />From June to July 1988, test pits were excavated and geotechnical boreholes <br />drilled (Figure C.1) with visual logging done in the field and samples retrieved <br />for further characterization in the laboratory. <br />Test pits were excavated by backhoe to practical refusal or r,o the limits <br />of the equipment, approximately 11 ft. A total of 35 test pits were excavated; <br />seven in the leach and process area, nine in the potential borrow area, 15 in <br />the waste rock areas, and the remaining four in the vicinity of the mine pits. <br /> From the test pits, 43 representative bulk (disturbed) :s amples were <br /> retrieved which characterized the shallow subsurface of the site. Of these <br /> samples, 13 were selected for geotechnical classification testing. <br /> <br /> Boreholes were drilled using an auger drill rig to practical refusal or <br /> to the limits of the driller's equipment, approximately 100 ft. A total of 11 <br /> boreholes were drilled; three in the leach pad and process area, six in the <br /> potential borrow area, and two in the waste rock area. <br />From the boreholes, 218 samples were retrieved which characterized the <br />shallow to deep subsurface of the site. Borehole samples were either bulk samples <br />taken from the drill cuttings or undisturbed two-inch diameter California drive <br />samples taken during standard SPT blow count testing. Of these samples, eight <br />were selected for geotechnical classification testing. <br />The results of all the geotechnical laboratory testing and the field <br />nuclear density testing are summarized in Section D.1 of Appendix D. In addition <br />to the classification testing, standard Proctor moisture-density testing was done <br />on samples representing potential fill materials. Permeability testing of <br />potential silt liner material and leak detection system sand and have also been <br />completed. <br />Geotechnical testing of spent heap leach ore and milled tailings has also <br />been completed and is included in Sections D.3 and D.5 of Appendix ]. <br /> <br /> <br />