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NCC INC. 13038797888 P. 04 <br />May 30,1996 <br />R.N. Robinson & Sons <br />P.O. Box 117 <br />Hayden, CO 81639 <br />Job No. 96-Zb73 <br />Subject: Roadway Certification Letter, Haul Road <br />B, Foidel Crcck Mine, Routt Couvry, Colorado. <br />Gentlemen, <br />f, Brian D. Lea. a registered professional engineer, registry vttmber 25750, in the state of Colorado, certify that <br />the western end of Haul Road B was reawfaced in accordance with the projert spcrSfiwdons. The contractor <br />reswfaced approximately 800 to 900 lineal feet of roadway. The portion of the roadway resurt'aced started at <br />the Railroad Track Dossing and terminated at the west end of the recently reconsUuUed portion of Haul Road <br />B situated north and east of the Waah Plant. <br />Daring thr pnrinri of May 10, 19LK throunh A4pv 17. 177( pcrir~li,. „~.tT, ii„~„ ..f tl~~ h.ul road •v~r~ nano to <br />verify that the aw subbase and road base gravels were placed and compaued tp at least 95%n of the. modified <br />Proctor density determined in accordance with ASTM D1557. We also verified [hat the contractor had placed <br />the required amount of subbase and bane nurse gravels. ifie subbase and road base gravels were placed to <br />minimum thickness' of 12 and 6 inches, respectively. Placement depths were verified during the periodic site <br />inspecttovs. Copies of our daily inspection reports, including the compaction test results aze enclosed. <br />If you have any questions regazdivg this certification. or if we can be of further service, please contact this <br />offcc. <br />.Cinrnr~ly, <br />NOR1t[wPST <br />~ ~ +•tl' <br />Brian o. Le ... _; 25750 <br />cc: Rick Mi1Ls, Twevtymile Coal <br />n <br />LJ <br />(970) 079.7080 • Fax (970) 679.7891 <br />28585 U.S. 40 Weat, Box 775226 • Steamboat Springs, CO 80477 <br />