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Varra Companies, Inc. <br />Office of Special Projects <br />8120 Gage Street Frederick, Colorado 80516 Telephone (970) 353-8310 Fax(970)353-4047 <br />29. Please see comments under Exhibit D, No. 11. <br />Refer to reply to Item #11. <br />6.5 GEOTECHNICAL STABILITY EXHIBIT <br />The Applicant has submitted a Slope Stability Analysis, prepared by CGRS, Inc., <br />which was performed as part of the Flood Mitigation Plan for the Durham Pit <br />(M-1978-056). The material samples used in this analysis were collected at the <br />Durham Pit, which lies immediately east of the Western Sugar Pit. The Division <br />cannot accept a Slope Stability Analysis which was performed for a different <br />mine operation. Variations in subsoil conditions between the Durham Pit and <br />Western Sugar Pit are likely to be minimal. However, all laboratory tests and <br />modeling analyses must be performed on exploratory borings taken from the <br />Western Sugar Pit. Please submit a revised Slope Stability Analysis. <br />Information Pending. <br />Attachments: <br />1 Proof of Placement of this material with the Weld <br />County Clerk to the Board. <br />2 C.G.R.S. Dewatering Evaluation. <br />3 Stormwater Management Plan. <br />4 Approved CDH Discharge Permit. <br />5 Proofs - Publication & Notification. <br />6 Exhibit C-1 and C-2, Maps. <br />7 Drill Logs. <br />Varra Companies, Inc. correspondence to the Colorado Office of Mined Land Reclamation (OMLR) 17 <br />in reply to OMLR correspondence of 4 October 2010 - Western Sugar Reclamation Land Development Project <br />- M-2010-049.