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Sandy Brown <br />May 23, 2000 <br />Page 3 of 4 Pages <br />Reference d), 57 <br />The response of reference d) is adequate. Text has been modified. <br />Reference b), Concern L <br />Reference c), Item 58 <br />Reference d), 58 <br />The response of reference d) is adequate. Stationing has been added to Drawings 2.05-MI Sheets <br />1 and 3 of 4. <br />Reference b), Concern M <br />Reference c), Item 59 <br />Reference d), 59 <br />The response of reference d) is adequate. Cut slopes have been laid back to I.SH:1 V. <br />Reference b), Concern N <br />Reference c), Item 63 <br />Reference d), 63 <br />The response of reference d) is adequate. Reference has been made to compaction standards. <br />Reference b), Concern O <br />Reference c), Item 60 <br />Reference d), 60 <br />I don't believe the response of reference d is adequate. I suggest the following comment. <br />The West Valley Fill and Haul Road fill slope (Appendix L) design waivers were approved <br />for slopes on competent rocks of the Bowie Member (Lincoln DeVore, Inc, June 3, 1997). <br />Please document similar conditions or provide the requested demonstrations in support of <br />the alternative designs ]a stability analysis that demonstrates a safety factor of 1.3 under a <br />surcharge from a loaded haul truck for any road fill slopes steeper than 2 horizontal to 1 <br />vertical. Rule 4.03.1(3)(e)(ix)]. <br />Reference b), Concern P <br />Reference c), Item 82 <br />Reference d), 82 <br />The response of reference d) is adequate. The berms have been extended. <br />