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