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Review of Refuse Pile ~ Pond Reports <br />July 19, 1995 <br />Page 3 <br />5. Appendix B, Compaction Testinq Program, in Exhibit 18 was <br />approved in Technical Revision No. 15 which addressed a <br />variety of issues as the result of a midterm review, including <br />the refuse pile. In reviewing the Compaction Testing Program, <br />the Division believes the testing program is inadequate. <br />While Rule 4.10.4(3) does not indicate how often a dry density <br />test should be performed, it is typical to perform a test <br />after completion of a lift. The Division considers this <br />testing frequency important at the Southfield waste pile given <br />the variability of the waste that ends up in the pile and due <br />to previous concerns. EFCI's testing program only commits to <br />doing compaction tests on a semi-annual basis. Given the <br />current plan, a compaction test should have been completed <br />during the first quarter. There is no indication in the <br />report that this test was completed. EFCI has committed to <br />doing two compaction tests at random locations on each active <br />fill bench. Considering the total active area of the pile, <br />the Division believes that two samples are inadequate. <br />However, we would defer to an engineer to determine how many <br />density tests were needed for that engineer to certify that <br />the pile is a stable construction. <br />A. Was a compaction test on the refuse pile completed during <br />the first quarter 1995, as committed to in Appendix B, <br />Compaction Testing Program, of Exhibit 18? If so, please <br />provide an addendum to the quarterly report which <br />indicates this test was completed and the results of the <br />test. <br />B. EFCI should revise the Compaction Testing Program to <br />commit to performing compaction testing each time a lift <br />is completed and to the submittal of the test results to <br />the Division on a quarterly basis. <br />C. EFCI should provide verification that two compaction <br />tests on an active bench is adequate to determine the <br />stability of the refuse pile. If more tests are required <br />the Compaction Testing Program should be revised to <br />reflect this change. <br />Bediment Pond Inspection Reports <br />Reo'uirements <br />* Rule 4.05.6(13) requires that the sediment ponds be inspected on <br />a quarterly basis for structural weakness, erosion, and other <br />hazardous condition. In addition, the report should include the <br />