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.,- Rec~;~Y° <br />( DEPARTMENT OFTHE ARMY S~ <br />U.S. ARMY ENGINEER DISTRICT, SACRAMENTO 9 <br />COR 325 J STREETERS ~" ~ 7 loo <br />~„ +)~ 5~ <br />ATTENT ON OF SACRAMENTO, CALIFORNIA 958142922 '.;;o F~e~dOJ~ <br />September 20, 2004 `''~S ~ G~o~ <br />Regulatory Branch (199475346) <br />Mr. David Dillon /~ ~~~ ~ ~ `~ <br />San_dco, Inc. - ((i(,~ ~R ~~ _Q(,Q- <br />`, P. 0. Box 4440 <br />Durango, Colorado 81302 'bAl~ n ,t !}~l'~ ~D <br />Dear Mr. Dillon: ~ t~l'- RA(' A~~~~~t~t-- <br />We are responding to your request for written confirmation <br />on the compliance of the approved bank stabilization activity <br />associated with your Dalton Pit mining operation. During a March <br />16, 2004 site inspection, a representative of this office met <br />with you to inspect both your mining and bank stabilization <br />activities. According to this site meeting, it appears that the <br />concrete blocks have been installed according to our written <br />approval (enclosed). However, maintenance and monitoring shall <br />continue to insure that erosion does not occur behind or adjacent <br />to the concrete block, along with insuring the success of the <br />willow plantings. If the structures experience erosion or if the <br />willow plantings shall fail, you shall correct the scenario <br />within 30 days of the observation. Monitoring shall continue <br />until the site meets the performance standards identified in our <br />February 24, 2004 letter. <br />If you have any questions, please contact me at the Durango <br />Regulatory Office, 278 Sawyer Drive, Unit # 1, Durango, Colorado <br />81301 or telephone 970-375-9452. <br />Sincerely, ~~` <br />~'~'rINAL SIGNED °``~s-oosF~°~c~®~,F <br />~, >~ o <br />Kara A. Hellige P'ei, <br />Chief, Durango Regulatory Offic~~~P <br />Sacramento District °~o„ <br />Copies Furnished: <br />Mr. Bob Oswald, State of Colorado, Division of Minerals and <br />Geology, 701 Camino Del Rio, Room 125, Durango, Colorado 813011 <br />