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<br />------------- <br /> <br />------ <br /> <br />Table 31. Summary of water quality for Field Trip 2 of the 1990 Dolores River Study. <br /> Above conflu- Below con- <br /> Near Slickrock ence w/San fluence w/San Near confluence w/Colorado <br />LOCATION (RM 122.7) Miguel River Miguel River <br /> (RM 64.5) River (RM 1.3) <br /> (RM 59.7) <br />Sample ill: Rep #1 Rep #2 Rep #1 Rep #2 <br />Trip 2 Parameter 2- WQ2 2.WQ4 i 2-WQ1 2-WQ6 2-WQ3 2-WQ5 i <br />Sep. 24- Alkalinity as Caco3 (1), mg/l 122 120 121 92.6 - 107 120 122 121 <br />Oct. 2, Hardness as Caco3, ag/l 138 139 138.5 912 407 378 372 375 <br />1990 <br /> pH Unit 8.29 8.33 8.31 7.67 8.00 8.27 8.25 8.26 <br /> IDS, mg/l 232 220 226 2,030 752 741 761 751 <br /> Ammonia as NH3.N, mg/l <.2 <.2 <.2 0.61 0.26 <.2 0.28 0.24 <br /> Nitrate as N03-N, mg/l 0.02 0.04 0.03 1.26 0.27 0.36 0.44 0.40 <br /> Phosphate as P04_p (1), mg/l 0.022 0.022 0.022 0.456 0.420 0.050 0.075 0.063 <br /> Ortho Phosphate as P04.p, mg/l <.01 <.01 <.01 0.044 0.020 0.018 0.020 0.019 <br /> Copper as Cu (1), mg/l <.01 <.01 <.01 0.282 0.030 <.01 <.01 <.01 <br /> Iron as Fe (1), mg/l 1.80 1.80 1.80 27.0 27.6 12.8 10.1 11.5 <br /> Lead as Pb (1), mg/l <.01 <.01 <.01 0.180 <.01 <.01 <.01 <.01 <br /> Zinc as Zn (1), mg/l <.01 <.015 0.012 1.20 0.140 0.058 0.058 0.058 <br /> Oil & Grease, mg/l <.5 <.5 <.5 <.5 <.5 <.5 <.5 <.5 <br /> 1'8S, mg/l 65 66 65.5 9,050 2,080 480 496 488 <br />