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<br />July I5, 1996 -3- 963-2027.008 <br />Permeability of the three Clay Borrow (SLC-29) specimens subjected to zero freeze/thaw <br />cycles ranged from 2x10-$ cm/sec to 3x109 cm/sec, with an average permeability of 6x109 <br />cm/sec. Permeability of the three SLC-29 specimens subjected to three freeze/thaw cycles <br />ranged from 6x108 cm/sec to 4x10-9 cm/sec, with an average permeability of 1x10.8 <br />cm/sec. Permeability of the three SLC-29 specimens subjected to five freeze/thaw cycles <br />ranged from to 2x10.8 cm/sec to 3x10-9 cm/sec, with an average permeability of to 7x10-9 <br />cm/sec. Again, the slight differences in the measured permeability between freeze/thaw <br />cycles could be attributed to variations in the compaction and moisture content. Repeated <br />freeze/thaw cycles appears have a negligibly small effect on the permeability of the Clay <br />Borrow Soil Liner Fill. Table 1 presents the permeability test summary, and Attachment B <br />presents permeability test data. <br />Golder appreciates the ongoing opportunity to provide engineering services for the Cresson <br />Project. Please contact the undersigned with any questions. <br />Sincerely, <br />GOLDER ASSOCIATES INC. <br />Terry Mandziak <br />Project Engineer <br />Johnson, <br />Associate <br />TM/JMJ/tm _ <br />zoz~onz.i~~ <br />cc: Mr. John Hardaway, CC&V <br />Mr. Jeff Pontius. CC&V <br />Mr. Jim Komadina, CC&V <br />Golder Associates <br />