Laserfiche WebLink
0 r <br />cotter <br />X7- 1f71--3oa <br />'r1 <br />David Bird <br />Senior Geochemist <br />Division of Reclamation, Mining & Safety <br />1313 Sherman Street, Rm 215 <br />Denver, CO 80203 <br />Tel: 303-866-3927 <br />Fax: 303-832-8106 <br />12-Dec-07 <br />Division ;r Rec' '_ adon, <br />Mining and \ aifety <br />Dear David Bird, <br />Subject: Pvc2iacement documentaiion for the T.R. submitted for Reclamation Plan (File <br />No. 77,700) in accordance with Rule 1.8.4 - Bulkheading at the Schwartzwalder Mine. <br />3 <br />Cotter Corporation is submitting minor changes to piping installed in the Steve Adit <br />Bulkhead. The change includes a chase pipe for the transducer to monitor water level in <br />the shaft and stainless steel pipe for collecting a water sample if necessary (Please see <br />attached cut sheet). A Geo Sub 180 sampling pump will also be installed in order to <br />collect a water sample if necessary after bulkheading. The documents here are submitted <br />as preliminary until the As Built Bulkheads are completed. A full completion report will <br />be submitted to DRMS and will include: <br />• Calculations at actual excavated dimensions <br />• Construction photos <br />• As-built drawings <br />• Concrete test results <br />• Updated surface map <br />If you have any questions or concerns, please contact me. <br />Thank you so much, <br /> <br />Amy Thurlkill <br />Environmental, Health, Safety & RSO <br />Cotter Corporation <br />7800 East Dorado Place <br />Suite 210 <br />Englewood CO. 80111 <br />Office: 720.554.6205 <br />Cell: 361.318.1622 <br />Fax: 720.554.6201 <br />Cotter Corporation Telephone (720) 554-6200 <br />7800 E. Dorado Place, Suite 210, Greenwood Village, CO 80111 Fax (720) 554-6201