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f Vaffa Companies, Inc. <br />8120 Gage Street Frederick CO 80516 Telephone (303) 666-6657 Fax (303) 666-6743 <br />Tuesday 30 May 2006 <br />Thomas A. Schreiner RECEIVED <br />Environmental Protection Specialist '4AY 3 12006 <br />Colorado Division of Minerals and Geology <br />Office of Mined Land Reclamation Division of Minerals and Geology <br />1313 Sherman Street, Room 215 vq,?_ L ?S-i- <br />Denver, Colorado 80203 <br />Subject: DMG Permit M1978-056 - Durham Sand & Gravel Pit <br />Technical Revision 2 - Reply to DMG correspondence of . <br />'T P - o Z <br />Dear Tom: <br />Consistent with your request of 11 January 2006, please find correspondence and <br />attachments from Bruce Erickson, P.E. of 17 May 2006 addressing final <br />reclamation costs. His sum of $ 157,312.50 when combined with that of Exhibit L <br />- Warranty Information from the approved amendment, or $ 90,283.52; should <br />bring the combined financial warranty to $ 247,596.02. <br />Also enclosed, find the final grading plan of April 2006 from Anderson Consulting <br />Engineers; and the CGRS Stability Analysis Report of 17 May 2006. This <br />information should satisfy the final concerns expressed by the Division, showing <br />that the existing berm is stable, no significant subsidence of the existing berm <br />would occur alter a flood event, and that the planned final grading will not <br />adversely impact bank stability of the berm. <br />The information as provided should allow the Division to approve the Technical <br />Revision. Thank-you again for your assistance. <br />Sincerely, <br />Varra Companies, Inc. <br />r ord Janes <br />Forester <br />Permit #:?tsl? Confidental?: <br />Class: Type-Seq. <br />From: _A. o: Q ¢a. L'. S? <br />Doc. Name: <br />Doc. Date (if no & st ): 3?