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i'~, ', J.C.BAUR <br />r.~~~; & ASSOCIATES, INC. <br />October 4, 2001 <br />Henderson Mill <br />19302 County Road 3 <br />Parshall, CO 80468 <br />ATTN: Dave Brence <br />RE: Crusher Closure Project <br />Dear Dave: <br />999 <br />I::\G E\GI\EF.FS <br />At your request, we have reexamined the portions of slab east of the main crusher shaft to <br />see if slab reinforcing is, indeed, required there as shown on Sheet S 1 of our drawings. <br />Our design approach, to this point, has been to reinforce all areas labeled on the original <br />drawings as being able to support only 250 psf. As shown on the attached photoa~py of <br />those original drawings, it appeared to us that the area in question falls within the 250 psf <br />boundary. <br />Upon review of the capacity of this easternmost area, it is our opinion that the exi::ting <br />concrete slab and beams have sufficient capacity to support anticipated loads from fill <br />material and equipment loads associated with the planned closure and landscapine of the <br />facility. We have, therefore, revised Sheet Sl to exclude the slab overlay in these areas. <br />I hope this helps to clarify these changes to our original design. If you have additional <br />questions or comments, please contact me. <br />Sincerely, <br />J.C. Baur & Associates, Inc. <br />~.:~ ~ . <br />~. 1 ..X,. <br />~ ~_ <br />.. '`~~2: <br />fir.... ;;w r-. \o <br />John C. Baur, P.E. <br />Encl. <br />,.. <br />