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Rollins 4 Chemical Analysis <br />• June 1 997 to Present <br />North 1,007,075 <br />East 117,090 <br />Elevation 4950.0 <br />Field Parameters 6/30/97 923197 9/30/98 1028/99 <br />pH SU 8.3 8.6 8.5 9.7 <br />Conductivity umhoslcm 1580 1210 1100 770 <br />Temperature (F) 66 66 66 <br />Static Water Level Feet 7.15 7.35 6.87 6.9 <br />Laboratory Results 8/11/99 <br />Alkalinity as CO3 Carbonate mgll 560 <br />Aluminum, Dis. mgll 0.02 <br />Antimony, Dis. ugll 4.00 <br />Arsenic, Dis. ugll 12.00 <br />Barium, Dis. ugA 130.0 <br />Berillium,Dis. ugll <1.00 <br />Boron, Dis. ugA 75.00 <br />Cadmium, Dis. ugA 1.2 <br />Calcium, Dis. mgll 10.0 2.9 9.2 8.3 <br />Chloride, CI mgA 20 43 11 8 <br />Chromium, Dis. uglf <1.00 <br />Cobalt, Dis. ugA <7.00 <br />Copper ug11 6.00 <br />Cyanide mgA <O.DO <br />Fluoride mgll 1.28 <br />Hardness as CaCO3 mgll 37.3 <br />Iron, Dis. mg11 1.68 <br />Lead, Dis. ugll <1.00 <br />Lithium, Dis. ug/l 90.00 <br />Magnesium, Dis. mgA 3.00 4.1 62 82 <br />Manganese, Dis. mgll 0.02 <br />Mercury, Dis. ugll <0.05 <br />Molybdenum, Dis. ugA <5.00 <br />Nickel, Dis. ugA <2.00 <br />Nitrate, Nitrogen mgll <0.01 <br />Nitrite, Nitrogen mgll <0.01 <br />pH, ~ 25 Deg. C SU 8.3 <br />Potassium, Dis. mgA 62.0 11.5 9.9 9.6 <br />Selenium, Dis. ugA <2.00 <br />Silver, Dis. ugA <0.02 <br />Sodium, Dis. mgll 306 274 199 178 <br />Solids, Total Dissolved mgll 1110 690 563 573 <br />SuHate, SO4 mgA 220 27.0 87 94 <br />Thallium, Dis. ugA <1.00 <br />Vanadium, Dis. ugll 10.00 <br />7_inc, Dis. mgA 1.24 <br />Bicarbonate, Alkalinity, as HCO3 mgll 686 531 398 408 <br />Carbonate, as CO3 mgA <5.00 42 43 21 <br />CatioNAnion Balance °k -1.9 <br />- <br />SAR Ratio 21.8 <br />GE-9 <br />