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COLARAOD LBGACY LAND SCHWAR-ALDER MINE <br /> <....:,...,..,.,,.<..:r:.. V -. -MPLE SUMMARY POW <br /> _.. '. <br /> Surface Water QualityI, <br /> Surface Water Quality Standards(CDPHE,2016)" <br /> Standard,Segment 17b, <br /> Ralston Creek <br /> - (CDPHE,2019)R Colorado <br /> CAS No. Units Aquatic Life Groundwater Sample Analytical Detection Sample Suite <br /> Human Health Aquatic Life a Quality Standards Type Methods - it Na <br /> otal Concentrations Dissolved Concentrations) (Utss°ived Q tY yp O <br /> (T ) ( CDPHE,2016 <br /> _ Water Conre°tratlons _ ( ) <br /> � DoDomesticChronic <br /> + Acute <br /> Water Agriculture 30-Day Acute Chronic <br /> supply Fish i-Day Average <br /> Fit, 401L <br /> Me <br /> Aluminum 7429-90-5 m L - - 6.68 0.087.` Grab M200.7 ICP <br /> . . <br /> 0.05 Sample Suite <br /> Antimony7440-36-0 m L 0006 Grab M200.8 ICP-MS 0.0004 SampleSuite <br /> Aenc 7440-38-2 mg/L n00002 0.34 0.15 Total= ooi GrabM200.8 ICP-MS 0.0002 Sample Suite#3 <br /> na <br /> Boron 744042-8 m L 0 0 0 0 Sample Suite#3 <br /> 01 Sample Suite#3 <br /> Chromium 111 7440-47-3 mg/L 0.05 01 <br /> - "-- <br /> Total=n/a <br /> Chromium VI 18540-29-9 mg/L 0.05 of 0,016 0.011 11 Sample Suite#3 <br /> Copper 7440-50-8 m L 1 0.2 - -,. 1 Grab M200.71CP 0.01 Sample Suite#3 -- <br /> Iron 7439-89-6 m L 0.3 I 1.0 0.3 Grab M200.71CP 0.03 Sample Suite#3 <br /> 0.05 Grab M200.81CP-MS 0.0061 Sample Suite#3 <br /> Lcad 7439-92-1 mg/L 0.05 0.1 - 011 0.0043 <br /> 0051Total=n/a <br /> Manganese 7439-96-5 m/L 0.05 0.2 3.51 1,94 3.51 0.05 Grab M200.71CP 0.01 Sample Suite#3 <br /> Mercu 7439-97-6 mgZL 0.21 - __ . 0.00001 0.002 Grab M245.1 CVAA 0.0002 Sample Suite#3 <br /> D.I 0.3 21M 7439-98-7 m L <br /> _ Grab M200.81CP-MS 0.0002 Sample Suite#3 <br /> Selenium' 7782-49-2 mg/L 0,1 0.02 0.0184 0.oU46 0.018 0.0046 0.05 Grab M200.81CP-MS 0.0001 Sample Suite#3 <br /> _Silver 7440-22-4 mg/L altoos 0,0047 0.00017 0.0047 0.000 -'- 0.05 Grab M200.8ICP-MS OA001 Sam Ie Suite#3 <br /> Thallium 7440-28-0 m/L R000s - - O.Uts_ - 0.002 Grab M200.81CP-MS O.0001 Sample Suite#3 <br /> _Uranium 7440-61-1 mg/L 0.03 4.12 2.57 0.03 Grab M200.81CP-MS 0.0001 Sam IeSuite#3 <br /> Zinc 7440-66-6 m L s 0,25 e,19 0.25 0.19 '-- 5 Ga M200.7ICP 0.01 Sam IeSuite#3 <br /> 2 <br /> Radionuclides <br /> Gross Alpha 1258746-1 pCi/L - - - - - - - 15 Ga M900.0 2 to 4 Sample Suite#3 <br /> Gross Beta 12587-47-2 pCi/L 5 Gab M900.0 2 to 4 Sample Suite#3 <br /> _Radium-226,Total 13982-63-3 pCi/L o,005 0.01 5 Grab M903.1 0.4 Sam IeSuite#3 <br /> Radium-226,Dissolved 13982-63-4 pCi/L Grab M903.1 0.4 Sample Suite#3 <br /> Radium 226+228 22 t Ra- <br /> 8 pCi/L - - Grab Calculation 2 Sample Suite#3 <br /> 22 5 <br /> M.-EER 2020 26 AMENDMENTS <br />