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Table 4.6-1. Present Monitoring Requirements - No Mine Activity <br />• (June 21, 1988 - 1994 - No monitoring after 1994) <br />Monitoring Site Frequency <br />OW-3L Quarterly Field, Annual Chemical Analysis <br />OW-4L Quarterly Field, Annual Chemical Analysis <br />OW-7 Quarterly Field, Annual Chemical Analysis <br />OW-8 Quarterly Field, Annual Chemical Analysis <br />OW-12 Quarterly Field, Annual Chemical Analysis <br />OW-13 Quarterly Field, Annual Chemical Analysis <br />OW-14 Quarterly Field, Annual Chemical Analysis <br />OW-15 Quarterly Field, Annual Chemical Analysis <br />Field Parameter s: Water Level, pH, Temperature, Conductivity <br />• <br /> <br />Chemical Parameters: <br />Fluoride (FL) <br />Calcium (Ca) <br />Magnesium (Mg) <br />Sodium (Na) <br />Nitrate (N0~) <br />Chloride (C1) <br />Sodium Adsorption <br />Sulfate (SO,) <br />Alkalinity (Alk) <br />Total Diss. Solids (TDS) <br />Conductivity (Lab) <br />pH (Lab) <br />Ratio (SAR) <br />Table 4.6-2. Status of Present Groundwater Monitoring System <br />Well Total Depth Condition of Well Comments <br />OW-3L 104 Feet Reclaimed <br />OW-4L 73 Feet Reclaimed <br />OW-7 74 Feet Reclaimed <br />OW-8 85 Feet Reclaimed <br />OW-12 98 Feet Reclaimed <br />OW-13 112 Feet Reclaimed <br />OW-14 117 Feet Reclaimed <br />OW-15 28 Feet Reclaimed <br />LO-1 13 Feet Reclaimed <br />Dry Since Drilled <br />Destroyed See OW-15 <br />Dry Since Drilled <br />Dry Since Drilled <br />Dry Since Fall 1985 <br />Water Below I00' <br />Replaced OW-4L <br />Lacy Loadout <br />Well OW-15, which replaced the destroyed well OW-4L, <br />downgradient of Pond A. The well was drilled to <br />little, if any, water was encountered. The well <br />throughout the bottom 20 feet of the hole (Exhibit 4 <br />NCIC - Coel Ridge No. 1 <br />4-85 <br />was located <br />refusal and <br />was screened <br />.6-2). <br />06-06-95 <br />