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r <br />• <br />.~.. <br />John Hardaway <br />-2- <br />April 12, 1995 <br />It is the understanding of the Division that CC & VG will detoxify the water on Pond 4C <br />by applying hydrogen peroxide at a rate suggested by Degussa and the treated water <br />quality data which was provided was based on the recommended application rate. <br />Based on CDPHE recommendations and the Division's review, the request is approved <br />with the following conditions: <br />Pond 4C water will be applied only 48 hours after the last rain event or <br />when visible dust is observed during routine traffic on the roads. <br />2. CC & VG Mining Company will sample the water for all the applicable <br />parameters at the NPDES discharge point in addition to the monthly <br />sampling after each 10 year - 24 hour event (2.2 inches). <br />3. CC & VG will commit that no direct discharge of the water from Pond 4C <br />will reach the waters of the United States. <br />4. CC & VG will provide to the Division a detailed rate of application and <br />location of where this water is being applied on a monthly basis. <br />If you agree with the above conditions, please notify the Division in writing before <br />application of water from Pond 4C takes place. <br />Sincerely, <br />Berhan Keffelew <br />Environmental Protection Specialist <br />cc: Pat Nelson, Water Quality Control Division <br />M:\OSSammWond9C.bk <br />