Laserfiche WebLink
T ? ? ? ? ? ` 1601 Prospect Parkway, Suite C <br />Fort Collins, Colorado 80525 <br />S O L U T I O N S . 1 N c o R P O P A T E D 970-484-7704 / 970-484-7789 (F" <br />TECHNICAL MEMORANDUM <br />DATE: January 3, 2004 <br />Telesto # 212100 <br />TO: Bill <br />FROM: Jim <br />SUBJECT: Analysis of Pre-Mining Ground Water Quality in the Vicinity of the <br />West Pit <br />COPY: Julio Madrid <br />INTRODUCTION <br />At the request of Battle Mountain Resources, Inc. (BMRI), Telesto Solutions, Inc. <br />(Telesto) has conducted an evaluation and analysis of current ground water chemistry <br />conditions in the West Pit of the San Luis Mine, Costillo County, Colorado (Figure 1). <br />Based on available water chemistry information, constituent concentrations in ground <br />water of the West Pit are approaching steady-state values after steadily decreasing since <br />implementation of the ground water control program outlined in Technical Revision 26 <br />(TR-26) to permit number M-118-89. Given the West Pit ground water chemistry steady- <br />state condition, a comparison between pre-mining water chemistry and current conditions, <br />as contemplated in TR-26, is warranted. <br />Information drawn upon to complete this analysis includes baseline descriptions and data <br />as presented in the original mine permit application, additional data generated during <br />development of TR-26, and the ground water quality database that has been developed in <br />conjunction with performance monitoring of the TR-26 ground water control program. <br />This technical memorandum evaluates the pre-mining and post-mining geologic, <br />hydrologic, and geochemical conditions with the objective of demonstrating that current <br />constituent concentrations in the West Pit backfill are equal to or less than pre-mining <br />conditions. BMRI and Telesto acknowledge that the ground water level control in the <br />West Pit should be maintained to continue the current ground water chemistry conditions. <br />p:Iprojecisl2l2-newmont(s luis)Lsmluislir-28wlglVlpmmine westpiedoc