2011-11-19_REPORT - M1980244

• Permit No: M1980244
• IBM Index Class Name: Report
• Doc Date: 11/19/2011
• Doc Name: FINAL REPORT, VOLUME 1 of 3 2011 phase 5 valley leach facility ore storage 1 OF 1
• From: CC&V
• To: DRMS
• Media Type: D
• Archive: No

frequency of one test per 50,000 cubic yards. The CQA Atterberg limits performed on SF
met project specifications. The SF CQA Atterberg limits results are summarized in Table 5.
AMEC performed two (2) CQA Atterberg limits tests of LDF. The testing frequency
(approximately one test per 70 cubic yards) exceeded the minimum specified testing
frequency of one test per 10,000 cubic yards. The LDF CQA Atterberg limits met project
specifications, and the results are presented in Appendix H -1 and summarized in Table 6.
AMEC performed sixty -seven (67) CQA Atterberg limits tests of SLF. The testing frequency
(approximately one test per 1,633 cubic yards) exceeded the minimum specified testing
frequency of one test per 5,000 cubic yards. The CQA Atterberg limits performed of SLF
met project specifications. The SLF CQA Atterberg limits results are presented in
Appendix H -1 and summarized in Table 7.
AMEC performed twelve (12) CQA Atterberg limits tests of DCF. The testing frequency
(approximately one test per 16,834 cubic yards) exceeded the minimum specified testing
frequency of one test per 20,000 cubic yards. The DCF CQA Atterberg limits met project
specifications, and the results are presented in Appendix H -1 and summarized in Table 8.
AMEC performed one (1) CQA Atterberg limits test of SSF. The testing frequency
(approximately one test per 315 cubic yards) exceeded the minimum specified testing
frequency of one test per 50,000 cubic yards. The SSF CQA Atterberg limits met project
specifications, and the results are presented in Appendix H -1 and summarized in Table 9.
4.1.4 Proctor Compaction Tests
AMEC Earth & Environmental, Inc
2000 S. Colorado Blvd 2 -1000
Denver, CO 80222
Tel 303 - 935 -6505
Fax 303 - 935 -6575
ame9
AMEC performed standard Proctor compaction tests of SF in order to compare in -place
densities and moisture contents with laboratory derived values of maximum dry density and
optimum moisture content. The majority of the SF contained more than 30 percent above
the 3/4-inch sieve. Per Specification 2200 Section 3.06, SF containing more than 30 percent
above the 3/4-inch sieve is placed using a method specification and cannot be tested using a
standard Proctor (due to the high rock content). Of the SF placed containing less than 30
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