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Ms. Carla L.enkey, CDPHE <br />April 19, 2007, -Page 2 <br />Trapper is required to maintain sediment levels in ponds a[ or below 60% of the pond volume. All ou[falls have <br />been properly maintained and no ponds exceeded the 60°6 threshold for sediment accumulation. All structures <br />operated properly and were not compromised in any way. The exceedances occurred solely in response to <br />discharge caused by precipitation and/or snowmelt, therefore the altema[ive limitations are applicable for [his <br />event. All other operations were properly wnducted concerning the sediment control structures at Trapper <br />Mine. <br />Thank you for your cooperation in this matter. ]f you have any further questions or comments concerning [he <br />enclosed information, feel free to contact me. <br />Sincerely, <br />/~`~` <br />Graham Roberts <br />EHS Specialist <br />GCR [WATER\DMR Cover Lever\I° Quarter 20071 <br />Enclosure <br />c laret Birms, CDRMS <br />File 109.2.7 <br />certify under penalty of law that this document and all attachments were prepared under l <br />section or supervision in accordance with a system designed to assure that qualified person <br />-operly gather and evaluate the information submitted. Based on my inquiry of the person <br />:[sons who manage the system, or those persons directly responsible for gathering <br />~fotmation, the information submitted is to the best of my knowledge and belief, to <br />xurate, and complete. 1 am aware that there are significant penalties for submitting fa <br />formation, including the possibility of fate and imprisonment for knowing violations. <br />]taym td G. DuBois <br />Presid nt & General Manager <br />