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i <br />MINREC, INC., NORTH THOMPSON CREEK MINES ,^r'FIVEC <br />' Ut(; 21 1995 <br />1995 ANNUAL HYDROLOGIC REPORT <br />OCTOBER 1994 THROUGH SEPTEMBER 1995 '''~'"''o~~u~wnnzrals&Ge010yy <br />INTRODUCTION <br />1 The Operator completed reclamation of the North Thompson Creek <br />Mines during 1987. The No.l Mine was sealed during 1987 with the <br />expectation that no water would discharge from it again. The No. <br />3 Mine was sealed, however pipes were placed in the lowest seal to <br />allow water to drain from the mine. <br />' Current monitoring requirements are shown on pages 3-61 and 3-86 of <br />' the Permit. <br />Monitoring data for this years report is segregated into the <br />' following appendices: <br />Appendix No. Monitoring Data <br />t I North Thompson Creek <br />Upstream & Downstream Water Quality <br />1 II Refuse Pile Piezometers, D-lA & D-2A <br />Water Level, pH, Conductivity & Graphs <br />III Mine Water Level <br />No. 3 Mine <br />' IV Mine Discharge Quality <br />' No. 1 Mine & No. 3 Mine <br />METHODS <br />t The following narrative explains the methods used to perform water <br />monitoring: <br />t Flow - Flow is determined at discharge points 001 & 007 by timing <br />flow into a bucket of known volume. <br />t pH - A Cole Parmer pocket size tester (pH. Range -1.0 to 15.0 pH). <br />' Resolution 0.1 pH. Accuracy +/- 0.1 pH. Operating temperature 0 <br />to 50 °C. Temperature compensation: automatic 0 to 50 °C. <br />1 <br />