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<br />MINREC, INC. ANNUAL HYDROLOGIC REPORT PAGE 2 <br />Depth to Water - A Water Level Indicator (M-Scope) is used to measure depth to water. The cable <br />is marked in 5-foot increments. A tape measure is used to determine accurate distances between <br />' marked increments. <br />Temperatwe - A standard mercury thermometer which measures temperature in degrees Celsius or <br />' a microprocessor based pocket sized temperature tester is used. <br />Other parameters -Samples are submitted in bottles to either Grand Junction Laboratories or <br />SOLTESCO. <br />SURFACE WATER QUALITY <br />Appendix I contains the water quality information collected for North Thompson Creek. The quality <br />information taken on North Thompson Creek, in May and September, is designed to monitor quality <br />' at the approximate high and low flow. <br />The variation of the quality of North Thompson Creek as it passed the mines this year was similar to <br />' that which would be expected from the baseline monitoring data and the fact that the Abandoned <br />Mined Lands peat bog water treatment system is discharging into the creek between the upstream and <br />downstream water monitoring points. <br />GROUND WATER QUALITY <br />' The results of monitoring wells D-1 A and D-2A which are located near the toe of the refuse pile are <br />presented in Appendix II. Monitoring Well D-lA is directly below the refuse pile and well D-2A is <br />' 200 feet to the west of well D-1 A Monitoring results for prior years are summa~aed by quarter to <br />make it comparable to the current monitoring schedule. <br />' Graphs have been prepared which show quarterly water level and conductivity measurements for both <br />wells. The water level measurements for the year were consistent with prior years data. The <br />conductivity measurements were also consistent with prior years. The pH measurements for the wells <br />were similar to prior years monitoring. <br />MINE FLOW5 <br />All of the water flowing into the No. 1 Mme is being allowed to flow out of the mine into the <br />treatment ponds. Measurements of the water level in the mine are taken at two valves that penetrate <br />' a concrete bulkhead in the mine portal. One of the valves penetrates the seal approximately 3 feet <br />higher than the other. The water level in the mine has been maintained below the upper valve and <br />above the lower valve during the year. Therefore, the level of water inside the mine has been stable <br />during the year. <br />1 <br /> <br />