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<br /> <br /> <br />.' <br /> <br /> <br />Cripple Creek & Victor Gold Mining Company November 13, 2003 <br />Mr. Ron Roberts -2- 003-2203 <br />• Modified Proctor Compaction (ASTM D 1557) - 1 test; <br />• Flexible-wall Permeability (ASTM D5084) - I 1 tests; <br />• Liner Load -1 test; and <br />• Single-Point Interface Sheaz Testing (ASTM D5321) - 2 tests. <br />The results of these tests were compazed to the Phase N VLF Project Technical Specifications, The <br />Phase N VLF Project Technical Specifications for SLF are as follows: <br /> <br />Gradafion: <br />US.`Standard Sieve Size ::Percent Passing by-Dry Wt. ?- <br />2 inch 100 <br />No. 200 15 - 50 <br />t Plastic Index (PI): 10 minimum <br />Permeability: 1x10 centimeters per second (cm/sec), maximum. <br />According to the current specifications, the SLF is to be compacted to a minimum of 95 percent of the <br />maximum Standard Proctor dry density, with a moisture content between 3 percent below and at <br />optimum moisture content. <br />LABORATORY TEST RESULTS <br />Index Testine <br />Sieve analyses and Atterberg limits were conducted on samples A-I and ALT-TP-1 through <br />ALT-TP-9 in June and July 2002, one composite sample ALT-TP-10 in November 2002, and sample <br />ALT-TP-11 in January 2003. Results of sieve analyses and Atterberg limits testing are summarized <br />in Table 1 and included in Appendix A. Sieve analyses conducted on samples of the soil indicate that <br />58 to 86 percent of the material passes the 3/4-inch sieve, and approximately 26 to 39 percent of the <br />material passes the No. 200 sieve. With limited screening, the material meets project specifications <br />' with respect to gradation. The results of the Atterberg limits tests indicate that the plasticity index <br />ranges from 16 to 32, which is within the project specifications. <br />Proctor Comuaction Tests <br />Standazd Proctor compaction testing was conducted on samples ALT-TP-1, ALT-TP-3, ALT-TP-6, <br />ALT-TP-8, ALT-TP-9, ALT-TP-10 and ALT-TP-11. Samples ALT-TP-6, ALT-TP-8, and <br />ALT-TP-10 were corrected for oversize particles. After corrections were applied, the maximum dry <br />density ranged from 110.0 pounds per cubic foot (pcf) to 119.3 pcf with optimum moisture contents <br />' ranging from 12.3 to 14.9 percent. A modified Proctor compaction test was conducted on sample <br />ALT-TP-6, resulting in a maximum dry density of 124.5 pcf at an optimum moisture content of <br />10.1 percent. Results of Proctor testwg aze summarized in Table 1 and included in Appendix A. <br />two~uosw~oowoozzo,.oiao.osomasxroxsl.Fmc Golder Associates <br />