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iii iiiiiiiiiiiuiii , <br />STATE OF COLORADO <br />DIVISION OF MINERALS AND GEOLOGY <br />Departmem of Na rural Resources <br />1313 Sherman 51., Room 215 <br />Denver, Colorado 80203 <br />Phone: (303) 866-3567 <br />FA%: (30J1 8328106 <br />June 8, 1999 <br />Ron Zumwalt <br />Battle Mountain Resources Inc <br />PO Box 310 <br />San Luis CO 8l 152-0310 <br />~M'~" f M <br />~~ <br />Re: Interim Corrective Action for Outlined BMP Problem, San Luis Project, M-88-112 <br />Dear Mr Zumwalt: <br />DIVISION O F <br />MINERALS <br />GEOLOGY <br />0.EC LA MATION <br />MINING•SAFETY <br />Bill Owens <br />Cwernor <br />Greg E. Walther <br />&ecunve Dueaor <br />/.lichael B. Long <br />Division D~reclor <br />The Division received your letter dated June 3, 1999 regarding the BMP system n the south part <br />of the West Pit. <br />As you were notified in Mr. James Stevens' May 19, 1999 inspection report, the BMP pipe <br />which conveys stormwater runoff from the West pit to the Rito Seco drainage apparently <br />developed a leak through a cracked pipe or a faulty collar and was transporting contaminated <br />water from the West Pit to [he north bank of the Rito Seco. Mr. Stevens instructed you to locate <br />and eliminate the break, restore the BMP to its approved stormwater function anti restrict any <br />future flow thru the BMP to stormwater. As you stated, the BMP outfall line is currently <br />inundated due to the high water level in the West Pit backfill. BMRI inserted an Inflatable packer <br />into the pipe to eliminate flow from the pit and you have suggested that the BMF outfall line be <br />left disabled until such time as the evaporative system has been operated long enough to allow <br />the mine water level to drop below the outfall line. Once this occurs you will repair the line and <br />return the BMP to its designated use. Meanwhile, you will have a standby pipe and pump <br />available to remove stormwater from the West Pit if necessary. <br />Mr. Stevens is satisfied with this proposed interim corrective action so the Division does hereby <br />approve your proposed activity. <br />If you have any questions, please give me a call. <br />Sincerely, <br />`%1 <br />~~Ze-r~-r~ <br />James Dillie <br />Environmental Protection Specialist <br />cc: James Stevens, DMG <br />