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• TABLE G6 <br />SURFACE WATER QUALITY COMPARED TO DRINKING WATER STANDARDS <br />An Drinking Water Standazds Dowe Flats Water Quality <br />Parameter Concentration Concentration' <br />turbidity IT[J(5) 4.0 8.0 11.0 <br />azsenic .OS U6 U U <br />cadmium .010 U U U <br />Chromium .OS U U U <br />lead .OS U 0.009 0.005 <br />nitrate as N 10.0-20.0 U 0.324 0.203 <br />mercury .002 U 0.001 U <br />sodium MZ 15.0 6.0 10.0 <br />Benzene .005 1J U U <br />Carbon Tetrachloride .005 U U U <br />1,1-Dichlorcethene .007 2J U U <br />1,2-Dichlorcethane .005 U U U <br />1,1,1-Trichlorcethane 0.200 U U U <br />Trichlorcethene 0.005 1J U U <br />Vinyl chloride 0.002 U U U <br />• <br />Toluene LUR' 1J U U <br />Bromodichloromethane TTHM° U U U <br />TTHM 0.10 <br />hardness M <br />pH M 7.45 7.07 7.10 <br /> 7.62 7.87 7.80 <br />calcium M 81.0 5.0 4.0 <br /> 97.0 24.0 44.0 <br />alkalinity M 225.0 29.0 27.6 <br />temperature M 226.0 55.0 86.9 <br />1. Concentrations aze highest values rewrded or highest and lowest for that station over <br />three quarters of monitoring. <br />2. M: monitoring test and submit analysis <br />3. LUR: listed unregulated report detection <br />4. T'I'HM: trihalomethanes sum of bromodichloromethane, dibromochlorcemethane, <br />dibromethane (bromoform) and trichloromethane <br />5. TU: turbidity unit <br />6. U: not detected <br />• Parameters Not Analyzed coliform, Langelier Index (L,I), and Radioactivity <br />