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~T88PPER ~ININC INC. ~ <br />III IIIIIIIIIIIIIIII <br />July 13, 1990 <br />CERTIFIED P 468 756 338 !~~~~ <br />,~ ~~~. <br />~~.., <br />UC ! r <br />Mr. David Berry , ~, <br />Cdorado Mined Land Reclamation Division ~~ tif.:~~,~„ '~'a~1 <br />13 3 Sherman Streetng ^' ar ra r'`?A. n, ,; <br />. ~, , <br />Denver, CO 80203 <br />Dear David: <br />Subject: Trapper Mine Second Ouarter (1990) Sediment Pond Inspections <br />Our second quarter 1990 sediment pond inspection reports are attached. There are no structural problems <br />to report nor evidence of piping in the older structures with principal spillways through the dam. All dams <br />are functioning as designed. All storm runoff and melt-out has passed without incident. <br />As requested, the sediment level surveys were performed for Johnson Gulch Dams BR, 9 and 10. These <br />were compared to as-built surveys for each dam. All dams in question are below the 60°.6 sediment criteria. <br />Sincerely, <br />William Agne~~ <br />Senior Environmental Engineer <br />WSH/WA/kaw/032 <br />Enclosure <br />pc: R.L Fanyo <br />J.M. Mattern <br />W.S. Harding w/o encl. <br />B.D. Nichdson w/o encl. <br />File <br />P.0. Box 187 Craig, Colorado 81626 (303) 824-4401 <br />