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TABLE 2B:SUMMARY 01:SURFACE WATER ANALYI-ICAL DATA <br /> Surface Water Quality Standards <br /> Segment 17b,Ralston Creek Sample Location <br /> Parameter Units <br /> (CDPHE 2021)1 SW-ARIL SW-AWD SW-NWRP <br /> Acute Chronic 10/21/2021 12/08/2021 12/08/2021 <br /> Physical Properties <br /> TDS-"IotalDissolvedSoluis mg/l, - - 496 238 170 <br /> '1'SS- 1'or:d Suspended Solids mg/L - - <5 <5 - <br /> Alkalinity asUIC03 mg/L - - 20S 65.7 70.3 <br /> Bicarbonate as CaCO3 mg/L 190 6S•7 70.3 <br /> Calcium-Dissolved mg/l, 49.8 42.7 43.9 <br /> Carbonate as CaCO3 mg/L - - 1S B <2 <2 <br /> Chloride mg/L - 2SO 24.6 71.6 72.1 <br /> Fluoride mg/L 0.53 B 0.21 B 0.23 B <br /> Hydroxide as CaCD3 mg/L <2 <2 <2 <br /> Magnesium-Dissolved mg/L 16.4 11.4 12.4 <br /> Potassium-Dissolved mg/L 3.53 1.62 1.86 <br /> Sodium-Dissolved mg/L - - 99.S 20.8 20.0 <br /> Sulfate mg/L - 250 197 28.8 32.2 <br /> Cyanide-Weak Acid Dissociable mg/L 0.005 - <0.003 <0.003 <0.003 <br /> Nitrate+Nitrite as N mg/L NO3=10 NO2=0.OS <0.02 0.039 B 40.02 <br /> Phosphate-Total mg/L - 0.0434 B <0.03 <0.03 <br /> Phosphorus-Total mg/L 0.11 0.014 B <0.01 <0.01 <br /> Aluminum mg/L - - <0.05 <0.05 <O.OS <br /> Antimony mg/L - - <0.0004 <0.0004 <0.0004 <br /> Arsenic mg/L 0.34 - 0.0007 B <0.0002 <0.0002 <br /> Boron mg/L - 0.75 0.12 B <0.03 <0.03 <br /> Chromium mg/L - Chromium 111=0.11 <0.02 <0.02 <0.02 <br /> Chromium IV=0.016 Chromium IV=0.011 <br /> Copper mg/L 0.0213 0.0136 <0.01 <0.01 0.021 B <br /> Iron mg/L - 0.3 0.117 B <0.06 0.235 <br /> Lead mg/L 0.109 0.0043 <0.0001 <0.0001 <0.0001 <br /> Manganese mg/L 3.51 1.94 0.19 -0.01 0.024 B <br /> Mercury mg/L - - <0.0002 <0.0002 <0.0002 <br /> Molybdenum mg/L - - 0.0141 0.00064 0.00139 <br /> Silver mg/L 0.0047 0.00017 <0.0001 <0.0001 <0.0001 <br /> Thallium mg/L <0.0001 <0.0001 <0.0001 <br /> PACEROF15 <br />