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COLORADO LEGACY LAND <br /> IN.. _ FACE WAV9rMMWM DATA <br /> Surface Water Quality Standards <br /> Segment 17b,Ralston Creek Sample Location <br /> Parameter Units <br /> (C.DPHE2019)' SW-ARH SW-AWD SW-BPI, SW-FBRG SWLLHG SW-NWRP SW-Weir <br /> Acute Chronic 07/19/2021 07/19/2021 07/19/2021 07/19/2021 07/19/2021 07/19/2021 07/19/2021 <br /> Physical Properties <br /> TDS-TotalDissolvedSolids mg/I. 102 2;u 206 194 206 216 <br /> TSS-TotalSuspendedSolids mg/L 5 5R 13 5B _B <5 <br /> Alkalinity asCaCO3 mg/L 72.7 64.5 69.4 70.2 74A _ 66.5 76.8 <br /> Bicarbonate as CaCO3 mg/L 72.7 64.5 69.4 70.2 74A 66.5 76.8 <br /> Calcium-Dissolved mg/L 31.1 32 29 29.9 30.6 32.9 31 <br /> Carbonate as CaCO3 mg/L <2 <2 <2 <2 <2 <2 <2 <br /> Chloride mg/l. 250 47.6 57 48.6 48.1 47.9 56.2 47.9 <br /> Fluoride mg/L 0.3 B 0.36 0.28 8 0.28 R 0.3 B 0.32 B 0.31 B <br /> Hydroxide as CaCO3 mg/L <2 <2 <2 <2 <2 <2 <2 <br /> Magnesium-Dissolved mg/L 8.8 8.42 8.07 8.31 8.62 8.94 8.77 <br /> Potassium-Dissolved mg/L 1.93 1.76 1.64 1.72 1.81 1.83 1 1.88 <br /> Sodium-Dissolved mg/L 21 16.1 18.5 19 20.5 16.2 21.2 <br /> Sulfate mg/L 250 20.2 12.2 14.9 16.3 20.8 12.8 22.9 <br /> Cyanide.Weak Acid Dissociable mg/L 0.005 - <0.003 <0.003 <0.003 <0.003 <0.003 <0.003 4.003 <br /> Nitrate+Nitrite as N mg/L NO3=10 NOz=0.05 0.038 R 0.021 B 0.04 B 0.038 B 0.0350 0.043 R 0.030 <br /> Phosphate-Total mg/L 0.0341 13 <0.03 <0.03 <0.03 0.0403 B 0.0341 B 0.0372 B <br /> Phosphorus-Total mg/L 0.11 0.011 8 <0.01 <0.01 <0.01 0.013 B 0.011 B 0.012 B <br /> Aluminum mg/L - <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <0.05 <br /> Antimony mg/L - <0.0004 <0.0004 <0.0004 <0.0004 <0.0004 <0.0004 <0.0004 <br /> Arsenic mg/L 0.34 - 0.000598 '0.0002 0.00054 B 0.00052 B 0.00047 B <0.0002 0.00048 B <br /> Boron mg/L - 0.75 0.033 B <0.03 0.033 B 0.032 B 0.032 B <0.03 0.038 B <br /> Chromium 111=0.11 <br /> Chromium mg/L <0.02 <0.02 <0.02 <0.02 <0.02 <0.02 0.02 <br /> Chromium IV=0.016 Chromium IV=0.011 <br /> Copper mg/1. 0.0213 0.0136 <0.01 <0.01 4.01 <0.01 0.01 4.01 -0.01 <br /> Iron mg/I. 0.3 <0.06 <0.06 <0.06 <0.06 <0.06 <0.06 <0.06 <br /> Lead mg/L 109 0.0043 <0.0001 <0.0001 <0.0001 <0.0001 0.0001 <0.0001 <0.0001 <br /> Manganese mg/L 3.51 1.94 <0.01 <0.01 <0.01 <0.01 0.027 B <0.01 0.019 B <br /> Mercury mg/L 4.0002 0.0002 <0.0002 0.0002 0.0002 <0.0002 4.0002 <br /> Molybdenum mg/L - 0.00203 0.0005 B 0.00119 0.00133 0.00244 0.00079 0.00314 <br /> Silver mg/L 0.0047 0.00017 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <br /> Thallium mg/L <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <br /> PAGE a OF 15 <br />