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• MINREC,INC. ANNUAL HYDROLOGIC REPORT PAGE 3 <br /> A table of the No. 3 Mine water level measurements and a graph which shows the increase <br /> and decrease in water level over time are presented in Appendix 111. The water level in the <br /> mine is measured through a monitoring hole which penetrates the mine opening. The <br /> water level in the mine was basically stable during 2000. <br /> MINE WATER QUALITY <br /> The discharge from the No. 3 Mine and No. 1 Mine were combined on August 11, 1995. <br /> The average flow measurements from the No. 3 Mine (Outfall 007) for the period 1990 <br /> through 1994 is summarized below. <br /> NO. 3 MINE DISCHARGE <br /> Year 1990 19 Fl 91 1992 1993 1994 <br /> ow m 6.7 6.8 5.5 1 0.4 8.0 <br /> Water from the No.1 Mine and No. 3 Mine continue to be treated by the passive water <br /> treatment system. The quality of the discharge is presented in a table in Appendix IV. The <br /> • quality of the discharge from the mines showed some variation from last year. The <br /> average flow and TDS decreased and conductivity increased during the year. <br /> The following table presents arithmetic averages of flow and quality measurements taken <br /> at Outfall 001. Outfall 001 is the discharge point for the passive water treatment system. <br /> As of August 11, 1995, the discharge from Outfall 001 is the combined discharge from the <br /> No. 1 Mine and the No. 3 Mine. <br /> OUTFALL 001 - QUALITY <br /> YEAR Flow Max Flow Ave PH I COND TDS IRON <br /> 1989 43.0 16.5 _7.9__ __ 3598 _ __ 2512 _ 1_51 _ <br /> 1990 30.0 17.0 8.1 3157 _ 2129 _ 1.16_ <br /> 1991 30.3 20.1 8.1 2890 _ 2018 _ 1_28_ <br /> 1992 27.7 19.3 8.0 2722 1805 0.72 <br /> ---------- ------------ ----------- ---------- ---------- ---------- ---------- <br /> 1993 27.9 22.4 7.9 2643 1738 0.54 <br /> ---------- ------------ ----------- ---------- ---------- ---------- ---------- <br /> 1994 21.6 21.2 7.6 2627 1710 0.52 <br /> • 1995 75.2* 32.5 7.8 2435 1663 0.17 <br />