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DIVISION OF RECLAMATION, MINING AND SAFETY <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866 -3567 <br />FAX: (303) 832 -8106 <br />February 27, 2012 <br />Mr. Christopher Varra <br />Varra Companies, Inc. <br />8120 Gage Street <br />Fredrick, Colorado 80516 <br />RE: Varra Companies, Inc.; Western Sugar Reclamation Land Development Project <br />File No. M- 2010 -049; Technical Revision No. 1 (TR -01) Adequacy Review <br />Dear Mr. Varra, <br />STATE OF COLORADO <br />The Division of Reclamation, Mining and Safety (Division) has reviewed the content of the Varra <br />Companies, Inc. technical revision for the Western Sugar Reclamation Land Development Project, <br />File No. M- 2010 -049, and submits the following comments. The Division is required to make an <br />approval or denial decision no later than March 2, 2012 therefore; a response to the following <br />adequacy review concerns should be submitted to the Division as soon as possible. <br />1. The Flood Hazard Development Permit and supporting documents provided by the <br />Operator do not comply with the requirements of C.R.S 34- 32.5- 116(4)(h). Please refer to <br />the follow questions from the Division's adequacy letters during the permitting process <br />review and submit the required information to the Division for review. <br />Mined Land Reclamation <br />• Question #14 from Preliminary Adequacy Review letter dated October 4, 2010 <br />• Question #11 from Adequacy Review 2 letter dated January 10, 2011 <br />COLORADO <br />D I V I S I O N O F <br />RECLAMATION <br />MINING <br />—&— <br />SAFETY <br />John W. Hickenlooper <br />Governor <br />Mike King <br />Executive Director <br />Loretta Pineda <br />Director <br />The Applicant will need to provide a flooding impact analysis characterizing the flood <br />path and flow velocities for flooding events expected during the life of the operation. <br />The Applicant will need to assess how much of the pit or reservoirs will be flooded, <br />how the flood waters will be safely returned back to the main channel of the Cache <br />La Poudre, and how the riverbank and pit side banks will be protected from excessive <br />erosion. <br />Much of the site is located within floodplain of the Cache La Poudre River. Whenever <br />mining will occur within 400 feet of the river channel, a flood analysis and flood <br />control plan must be submitted. The flood analysis should quantify the velocity and <br />volume of flows expected on site from a 100 -year flood event, as well as the <br />elevation of the 100 -year base flood event and its relation to the elevation of any <br />proposed spillways and lake shore embankments. The flood control plan should <br />Office of Office of <br />Denver • Grand Junction • Durango Active and Inactive Mines <br />