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;< ~ <br />Memo to Barbara Pavlik <br />Coal Ridge No. 1 - TR-12 <br />page 2 <br />much of the existing terrace outslopes in the immediate vicinity, <br />composed of the same borrowed earthen materials, I conclude .that <br />there is a high likelihood that the finished slope should be <br />stable. This likelihood can be enhanced by proper preparation of <br />the foundational slope and thorough compaction of the fill <br />material. I suggest that the Division impose standards for <br />preparation of the cutslope and lift thickness and compaction of <br />the fill material. The cutslope should be benched on five foot <br />intervals to enhance bond with the filled wedge. Materials should <br />be placed on lifts of less than eighteen inches in thickness and <br />compacted to achieve at least 95 percent of optimum density. This <br />will necessitate the completion of a proctor test and moisture and <br />density control during placement and compaction. <br />cc: Larry Routten <br />Doc: C:\COAL\JAP\COALRIDG.T12 <br />JP/JP <br />