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A7COLORADO <br />Division of Reclamation, <br />Mining and Safety <br />Department of Natural Resources <br />1313 Sherman Street, Room 215 <br />Denver, CO 80203 <br />May 6, 2015 <br />Mr. Sean Frisch <br />Lafarge North America Inc. <br />8700 W. Bryn Mawr Ave., Ste. 300 <br />Chicago, IL 60631 <br />Re: Lafarge North America Inc., Nelson Pit, File No. M- 1974 -070 <br />Technical Revision No. 4 (TR -04) Adequacy Review <br />Mr. Frisch, <br />The Division of Reclamation, Mining and Safety (Division /DRMS) has reviewed the content of <br />the technical revision (TR -04) for the Nelson Pit, File No. M- 1974 -070, and submits the following <br />comments. The Division is required to make an approval or denial decision no later than June <br />1, 2015 therefore; a response to the following adequacy review concerns should be submitted <br />to the Division as soon as possible. r <br />1. Please provide Figure 1 —soil sample location map referenced in the H -2 Enterprises <br />recommendations letter. <br />2. Please provide the soil sample test results for Division review and the permit file. <br />Please be advised the technical revision for the Nelson Pit may be deemed inadequate, and the <br />revision may be denied on June 1, 2015, unless the above mentioned adequacy review;items <br />are addressed to the satisfaction of the Division. <br />If you have any questions, please do not hesitate to call me at 303 - 866 -3567 Ext. 8124. <br />SYer , <br />P . Hays <br />Environmental Protection Specialist <br />Cc: Wally Erickson, DRMS <br />.c <br />I \ o <br />1313 Sherman Street, Room 215, Denver, CO 80203 P 303.866.3567 F 303.832.8106 http: / /mining.state.co.us * * <br />John W. Hickenlooper, Governor I Mike King, Executive Director I Virginia Brannon, Director * * 1876 <br />