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TABLE G-3 <br /> HISTORIC WATER QUALITY DATA FROM THE UPPER AND LOWER AQUIFERS <br /> DOWNGRADIENT FROM THE ROCK SCHOOL LEASE AREA (WELDER AND SAULNIER 1978) <br /> UPPER AQUIFER-WELLTH75-7A LOWER AQUIFER-WELL TH75-76 <br /> DATE SAMPLED JULY 23, 1975 AUGUST 22, 1975 AUGUST 26, 1975 <br /> PARAMETERS AND (UNITS) <br /> Temp (°C) 18.0 18.0 21.0 <br /> Spec. Cond. (uhMOS/LM) 11030 1,140 1,220 <br /> pH (units) 8.7 8.8 8.2 <br /> Silica (mg/1) 11 14 13 <br /> Alumunium (ug/1) 220 10 20 <br /> Iron (ug/1) 20 20 60 <br /> Manganese (ug/1) 20 90 10 <br /> Calcium (mg/1) 2.7 6.7 8.6 <br /> Magnesium (mg/1) 0.6 25 3.4 <br /> Sodium (mg/1) 250 250 260 <br /> Potassium (mg/1) 0.9 0.7 1.0 <br /> Bicarbonate(HCO3)(mg/1) 410 530 644 <br /> Carbonate (CO3)(mg/1) 39 12 0 <br /> Alkalinity (CaCO3)(m9/I) 401 455 528 <br /> Sulfate (mg/1) 120 140 8.8 <br /> Chloride (mg/1) 10 9.4 17 <br /> Fluoride (mg/1) 13 12 19 <br /> Bromide (mg/1) 0.1 0.1 0.2 <br /> Nitrite+ Nitrate (N)(mg/1) 0.02 0.08 0.01 <br /> IDS (mg/1) 651 736 650 <br /> Arsenic(ug/1) 3 10 1 <br /> Baruim (ug/1) 100 <100 <200 <br /> Boron (ug/1) 150 180 410 <br /> Lead (ug/1) 2 2 3 <br /> Lithium (ug/1) 200 110 50 <br /> Selenium (ug/1) 0 0 0 <br /> Strontium (ug/1) ' 460 1,000 730 <br /> Zinc (ug/1) 20 0 0 <br /> Cadmuim (ug/1) - 0 0 <br /> Copper(ug/1) - 0 0 <br /> Mercury(ug/1) - 0 0 <br /> Molybdenum (ug/1) 15 2 <br /> G:IMM78545.00Medametion%Redemexh.DOC G-1 1 <br />