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<br />' San Luu Project -Phase 11 Raise I Expansion Const+vction SUlua Report <br />5.2.3 Liner Sub-base/Clay Liner Component <br />QA/QC testing of the liner sub-baseJclay liner component, material Type 3, consists of <br />gradations and insitu density and permeability measurements. Gradation testing conducted on <br />Type 3 material has indicated that only 4 out of 33 samples tested to date fail to meet the exact <br />' gradation specifications. These samples were slightly deficient in the percent passing <br />requirements for the coazse fraction and do not represent a significant departure from the <br />' material which is necessary to create a suitable sub-base for the liner. gurthermore, this <br />material has been blended with other Type 3 material to result in material which meets the <br />specifications prior to placement and acceptance. <br />Insitu density tests conducted in the Type 3 material have resulted in no failing densities. <br />t Insitu permeability tests conducted in the Type 3 material following compaction have resulted <br />in no failing permeabilities. The permeability test results have ranged from 3.3 x 10~ cmisec <br />i to 1.3 x10'8 cm/sec and averaged 6 x 10''cm/sec. <br />' A summary of all QA/QC test results for Type 3 material are included in ApljendIx D.3. <br />' 5.2.4 Miscellaneous Fill <br />Miscellaneous fill, material Type 4, utilized during the current construction generally consists <br />' of silty sand and gravel similar to the raise fill material. <br />' QAlQC testing of this material consists of gradation analyses and insitu density measurements. <br />These test results aze contained in Appendix D.4. <br />Insitu density tests indicate only one failing result, the density was 94 percent of maatimum dry <br />density as opposed to the required 95 percent. This material was recompacted. <br />5.3 Liner <br />QA/QC monitoring of the liner and liner installation indicates a high quality installation. All <br />' liner materials supplied by the manufacturer have met the required specifications. There have <br />been no deswctive seam sample failures and air pressure testing of the seams has indicated <br />t October, 1993 13 SRR Project No. 14725 <br />