Laserfiche WebLink
iiirirrlllllllllrlr <br />12975 W. 24th Pl. <br />Golden, (Applewood) Colorado, 80401 <br />(303) 237-8865 <br />Mr. Larry Oehler <br />Reclamation Specialist <br />State of Colorado <br />Division of Minerals and Geology <br />Department of Natural Resources <br />1313 Sherman St., Room 215 <br /> <br />r~ <br />FEE 0 3199 <br />M/N~RiL` <br />RE: Adequacy Responses to Battle Mountain Resource$ Technical <br />Revision No. 008 <br />Dear Mr. Oehler: <br />On behalf of our client, the Costilla County Conservancy <br />District, we have reviewed the Adequacy Responses to Battle <br />Mountain Resources Technical Revision 008. The computer modeling <br />indicates that a leak beneath the center of the tailings dam would <br />eventually be picked up at monitor wells M-12 and M-13. However; <br />i*_ appears t}tat it may take as long as 20 years before such a leak <br />would spread laterally enough to encroach upon these wells. It <br />continues to be our belief that the monitoring well system would lea <br />significantly enhanced by the addition of a single monitor well <br />located near the center of the foot of the tailing dim, between <br />wells M-12 and M-13. A well located at this point would pick up a <br />leak from the central portion of the facility much quicl¢er than the <br />outlying wells, and before the plume had been allowed 1•o spread as <br />extensively. We believe that this is particularly important now, <br />since it appears that out of compliance levels of cyanide will be <br />left in the tailings for an extended period of time. <br />If yo!t have any questions on these <br />to contact our office. <br />lly <br />., .r.. .-.. ~.. .. <br />C.P.G 5021 <br />, pl~aSe few-3~Free <br />cc: <br />Mr. Maclovio Martinez <br />Ms. Nora Jacquez <br />Mr. Dean Massey <br />- - <br />Ground Water Hydrology Engineering Geology Geophysics Geotechnical Consultants <br />January 29, 1993 <br />