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CDHPE <br />July 22, 2010, - page 2 <br />Trapper is required to maintain sediment levels in ponds at or below 60% of the pond volume. All outfalls have <br />been properly maintained and no ponds exceeded the 60% threshold for sediment accumulation. All structures <br />operated properly and were not compromised in any way. The TSS exceedances occurred solely in response to <br />discharge caused by precipitation and/or snowmelt, therefore the alternative limitations are applicable for this <br />event. All other operations were properly conducted concerning the sediment control structures at Trapper <br />Mine. <br />Thank you for your cooperation in this matter. If you have any further questions or comments concerning the <br />enclosed information, feel free to contact me. <br />Sincerely, <br /> <br />Graham Roberts <br />EHS Specialist <br />CCR [WATER/DMR/Quarterly Letter/2nd Quarter 20101 <br />Enclosure <br />c CRofi Zdbei. CDRMS`, <br />File 109.2.7 <br />I certify under penalty of law that this document and all attachments were prepared under my <br />direction or supervision in accordance with a system designed to assure that qualified personnel <br />properly gather and evaluate the information submitted. Based on my inquiry of the person or <br />persons who manage the system, or those persons directly responsible for gathering the <br />information, the information submitted is to the best of my knowledge and belief, true, <br />accurate, and complete. I am aware that there are significant penalties for submitting false <br />information, including the possibility of fine and imprisonment for knowing violations. <br />James M. Mattern <br />President & General Manager