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<br />0 <br />(-:.' Table I, Water quality characteristics of reconstituted San Juan River water used in chronic <br />:"" <br />t;::' toxicity test with Colorado pikeminnow. <br />CO <br /> Measured values (mean and SD in parentheses) <br /> San Juan Blending Adult exposure Embryo-larval <br /> Parameter (unit) River" tanks tanks exposure tanks <br /> pH 7.5 7.4 7.5 7,8 <br /> (standard units) (0,4) (0.2) (0.1) <br /> Hardness 150 145 145 151 <br /> (mgIL as CaCOJ) (2) (2) (4) <br /> Calcium 43 44 45 45 . ! <br /> (mgfL) (1) (I) (I) i <br /> Magnesium 9.2 8 8 10 ." . <br /> (mgIL) (1) (1) (1) '".., <br /> Sodium 22 22b <br /> (mgIL ) <br /> Potassium 1.9 2b <br /> (mgfL) <br /> Alkalinity 89 85 74 88 <br /> (mgIL as c<iCOJ) (2) (8) (2) ."! <br /> Chloride 5.9 13 24 36 <br /> (mglL) (0.5) (5) (19) <br /> Sulfate 89 88 90 89 <br /> (mgfL ) (3) (4) (6) <br /> Conductivity 360 395 439 474 <br /> ().llnhos/cm @25OC) (6) (15) (62) <br /> Un-ionized ammonia 0.26' 5.6 3,5 .., <br /> , <br /> ().IgIL as N) (7,7) (6.0) <br /> Dissolved oxygen 9.5 6.8 7.4 <br /> (rngfL) (0.7) (0,5) <br /> n 171 192d 56 <br /> "Water quality in San Juan River at Shiprock, NM, on November 5, 1985; Station ID 09368000 <br /> (Beal and Gold 1987). <br /> 6 <br />