Laserfiche WebLink
COLORADO LEGACY LAND <br /> TABLE 2B:SUMMARY OF SURFACE WATER ANALYTICAL DATA <br /> Surface Water Quality Standards Sample <br /> Segment 17b,Ralston Creek Location <br /> Parameter Units <br /> (CDPHE 2019)1 SW-ARH <br /> Acute Chronic 10/06/2022 <br /> Thallium mg/L — — <0.0001 <br /> Uranium mg/L — — 0.0819 <br /> Zinc mg/L 0.249 0.188 <0.02 <br /> Metals-Total <br /> Aluminum mg/L — — 0.059 <br /> Antimony mg/L — — <0.0004 <br /> Arsenic mg/L — 0.00002 0.00091 <br /> Boron mg/L — 0.75 0.11 <br /> Chromium III= 0.005 — <br /> Chromium mg/L <0.02 <br /> Chromium IV=<0.016 Chromium IV=<0.011 <br /> Copper mg/L <0.0213 <0.0136 <0.01 <br /> Iron mg/L — 1 0.656 <br /> Lead mg/L <0.05 — <0.0001 <br /> Manganese mg/L <0.05 — 0.202 <br /> Mercury mg/L 3.513 1.941 <0.0002 <br /> Molybdenum mg/L — 0.15 0.0139 <br /> Silver mg/L 0.0047 <0.00017 <0.0001 <br /> Thallium mg/L — — <0.0001 <br /> Uranium mg/L — — 0.0869 <br /> Zinc mg/L 0.249 0.188 <0.02 <br /> Radionuclides <br /> Gross Alpha pCi/L — — 136 <br /> Gross Beta pCi/L — — 42 <br /> Radium 226-Dissolved pCi/L — — 1.58 <br /> Radium 226-Total pCi/L — — 3.2 <br /> Radium 228-Total pCi/L — — 0.68 <br /> Radium 226+Radium 228-Total pCi/L — — 3.2 <br /> Notes: <br /> 1 Acute and chronic standards for cadmium,chromium III,copper,lead,manganese,nickel,silver,uranium,and zinc are calculated using an average hardness value of 163 mg/L as CaCO3. <br /> Bold and grey-shaded analytical results are detected above the criteria. <br /> B=Estimated concentration <br /> NO3=Nitrate <br /> NO2=Nitrite <br /> CaCO3=Calcium Carbonate <br /> mg/L=Milligrams per Liter <br /> pCi/L=PicoCuries per Liter <br /> PAGE 9 OF 16 <br />