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f <br />D. A. Berry - 2 - Febmary 4, 1997 <br />The enclosed letter report, dated January 31, 1997, prepazed by Maxim should address <br />the DMG's concerns. The letter report should be inserted into Volume VII, Tab 7, <br />Expansive Soil Evaluation, Reclaimed Fill Slopes, January 31, 1997. <br />Geotechnical Laboratory Testing, Proposed Gob Pile <br />(1) Mancos Shale Strength Parameters <br />Westec did mobilize a drill rig to obtain additional samples of the Maness Shale to verify the <br />strength parameters used in its eazlier analyses. The lab results are expected in about one <br />week. BRL agrees to have a stipulation included in the permit to disallow construction activity <br />on the gob pile until the DMG has approved the referenced material testing and found the gob <br />pile plan to be adequate. <br />Enclosed aze the following documents: <br />(1) Table ofContents -Volume VII. <br />(2) Revised pages 3 & 5 of the Introduction to Volume VII. <br />(3) Maxim Letter Report -Expansive Soil Evaluation, Reclaimed Fill Slopes, January 31, ] 997 <br />Please call if you have any questions. <br />Sincerely, <br />~~ <br />Jim Stover, P.E. <br />Consulting Engineer <br />cc: Wm. A. Bear, Jr. <br />