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__,....44--....„4"-Vt‘ <br /> COLORADO LEGACY LAND <br /> TABLE 1B: SUMMARY OF SURFACE WATER ANALYTICAL DATA <br /> Surface Water Quality Standards <br /> Sample Location <br /> Segment 17b,Ralston Creek <br /> Parameter Units (CDPHE 2019), SW-ARH SW-BPL SW-FBRG SW-LLHG SW-Weir <br /> Acute Chronic 11/4/2019 10/16/2019 11/4/2019 11/4/2019 11/4/2019 <br /> Physical Properties <br /> TDS-Total Dissolved Solids mg/I, - - 234 02 200 230 240 <br /> • <br /> TSS-Total Suspended Solids mg/I. - - <5.0 <5.0 <5.0 <5.0 <5.0 <br /> Major Ions <br /> Alkalinity as CaCO3 mg/L - - 74.8 48.4 64.6 77.6 84.1 <br /> Bicarbonate as CaCO3 mg/L - - 74.8 48.4 64.6 77.6 84.1 <br /> Calcium-Dissolved mg/L - - 34.4 5.9 34.6 33.7 34.6 <br /> Carbonate as CaCO3 mg/L - - <2.0 <2.0 <2.0 <2.0 <2.0 <br /> Chloride mg/L - 250 49.4 4.1 53.3 47.2 43.3 <br /> Fluoride mg/L - - 0.20 <0.10 0.20 0.2 0.3 <br /> Hydroxide as CaCO3 mg/L - - <2.0 <2.0 <2.0 <2.0 <2.0 <br /> Magnesium-Dissolved mg/L - - 10.1 1.9 9.6 10.1 10.4 <br /> Potassium-Dissolved mg/L - - 2.0 1.0 1.8 2.2 2.4 <br /> Sodium-Dissolved mg/L - - 25.5 16.6 18.3 26.8 28.2 <br /> Sulfate mg/L - 250 39.4 7.4 33.7 42.3 47.2 <br /> Nutrients 4%/7/1/%2A . <br /> Cyanide-Weak Acid Dissociable mg/L 0.005 - <0.003 <0.003 <0.003 <0.003 <0.003 <br /> Nitrate+Nitrite as N mg/L NO3=10 NOz=0.05 <0.02 <0.02 <0.02 <0.02 <0.02 <br /> Phosphate-Total mg/L - - <0.03 <0.03 <0.03 <0.03 0.03 <br /> Phosphorus-Total mg/L - 0.11 <0.01 <0.01 <0.01 <0.01 0.01 <br /> , , <br /> k,,,, Metals-Dissolved <br /> Aluminum mg/L - - <0.05 <0.05 <0.05 <0.05 <0.05 <br /> Antimony mg/L - - <0.0004 <0.0004 <0.0004 <0.0004 <0.0004 <br /> Arsenic mg/L 0.34 - 0.0005 0.0039 0.0005 0.0003 0.0003 <br /> Boron mg/L - 0.75 0.05 0.16 0.04 0.05 0.06 <br /> -Chromium Chromium III=0.11 <0.01 <0.01 <0.01 <0.01 <0.01 <br /> mg/L Chromium IV=0.016 Chromium IV=0.011 <br /> Copper I mg/L 0.0213 0.0136 <0.01 <0.01 <0.01 <0.01 <0.01 <br /> Iron mg/L - 0.3 0.04 <0.03 <0.03 0.03 0.07 <br /> Lead mg/L 0.109 0.0043 <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 0.04 <br /> Mercury mg/L - - <0.0002 <0.0002 <0.0002 <0.0002 <0.0002 <br /> Molybdenum mg/L - - <0.02 <0.02 <0.02 <0.02 <0.02 <br /> Silver mg/L 0.0047 0.00017 <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <br /> Thallium mg/L - - <0.0001 <0.0001 <0.0001 <0.0001 <0.0001 <br /> Uranium mg/L - - 0.0199 0.0225 0.0151 0.0210 0.0228 <br /> Zinc mg/L 0.249 0.188 <0.01 <0.01 <0.01 <0.01 <0.01 <br /> Metals-Total <br /> Aluminum mg/L - - <0.05 <0.05 <0.05 <0.05 <0.05 <br /> Antimony mg/L - - <0.0004 <0.0004 <0.0004 <0.0004 <0.0004 <br /> Arsenic mg/L - 0.00002 0.0005 0.0046 0.0006 0.0004 0.0003 <br /> Boron mg/L - 0.75 0.07 0.14 0.06 0.08 0.08 <br /> Chromium III=0.005 <br /> Chromium <0.01 <0.01 <0.01 <0.01 <0.01 <br /> mg/L Chromium IV=0.016 Chromium IV=0.011 <br /> Copper mg/L 0.0213 0.0136 <0.01 <0.01 <0.01 <0.01 <0.01 <br /> PAGE 5OF12 <br />