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COLORADO LEGACY LAND $CHWARTZWALDER MINE <br /> ABLE -9. MINE PERMIT#M-1977-300,QUARTERLY URFACE ATER AND GROUNDWATER SAMPLE SUMMARY <br /> Surface Water Quality <br /> Standard,Segment 17h, <br /> Surface Water Quality Standards (CDPHE,2018)A Ralston Creek <br /> (CDPHE,2019) B Colorado <br /> Anal to CAS No. Units 2 Aquatic Life z Groundwater Sample Analytical Detection Sample Suite <br /> Y Human Health Aquatic Life (Dissolved Quality Standards Type Method(s) Limit Name <br /> (Total Concentrations) (Dissolved Concentrations) Concentrations) (CDPHE,2016) c <br /> Domestic Chronic <br /> Water Agriculture Water+ Acute 30-Day Acute Chronic <br /> Supply Fish 1 Day Average <br /> Metals <br /> Aluminum 7429-90-5 mg/L - 6.68 0.087 - - - Grab M200.7 ICP 0.05 Sample Suite#3 <br /> Antimony 7440-36-0 mg/L 0.006 - - 0.006 Grab M200.8 ICP-MS 0.0004 Sample Suite#3 <br /> 0.01 Grab M200.8 ICP-MS 0.0002 Sample Suite#3 <br /> Arsenic 7440-38-2 mg/L 0.00002 0.1 - 0.34 0.15 Total= Total= <br /> n a 0.0000 <br /> Boron 7440-42-8 mg/L - - - - 0.75 0 0 0 0 Sample Suite#3 <br /> 0.11 0.1 Sample Suite#3 <br /> Chromium I1I 7440-47-3 mg/L 0.05 0.1 0.£35 0.11 Total A <br /> Total= n/a <br /> 0.05 <br /> Chromium VI 18540-29-9 mg/L 0.05 0.1 0.016 O.Ol l 0.016 0.011 _ Sample Suite#3 <br /> Copper 7440-50-8 mg/L 1 0.2 0.02 0.0136 0.021 0.014 1 Grab M200.7 ICP 0.01 Sample Suite#3 <br /> Iron 7439-89-6 mg/L 0.3 - - 1 - 1.0 0.3 Grab M200.7 ICP 0.03 Sample Suite#3 <br /> 0.11 0.0043 0.05 Grab M200.8 ICP-MS 0.0001 Sample Suite#3 <br /> Lead 7439-92-1 mg/L 0.05 0.1 0.11 0.0043 Total= Total = 11/11 <br /> 0.05 <br /> Manganese 7439-96-5 mg/L 0.05 0.2 3.51 L94 3.51 1.94 0.05 Grab M200.7 ICP 0.01 Sample Suite#3 <br /> Mercury 7439-97-6 mg/L 0.21 - 0.00001 - 0.00001 0.002 Grab M245.1 CVAA 0.0002 Sample Suite#3 <br /> Molybdenum 7439-98-7 mg/L 0.1 0.3 - - 0.15 0.21 Grab M200.8 ICP-MS 0.0002 Sample Suite#3 <br /> Selenium' 7782-49-2 mg/L 0.1 0.02 0.0184 0.0046 0.018 0.0046 0.05 Grab M200.8 ICP-MS 0.0001 Sample Suite#3 <br /> Silver 7440-22-4 mg/L 0.0005 - 0.0047 0.00017 0.0047 0.0002 0.05 Grab M200.8 ICP-MS 0.0001 Sample Suite#3 <br /> Thallium 7440-28-0 mg/L 0.0005 - 0.015 - 0.002 Grab M200.8 ICP-MS 0.0001 Sample Suite#3 <br /> Uranium 7440-61-1 mg/L 0.03 - 4.12 2.57 - 0.03 Grab M200.8 ICP-MS 0.0001 Sample Suite#3 <br /> Zinc 7440-66-6 mg/L 5 2 1 0.25 1 0.19 1 0.25 0.19 5 1 Grab M200.7 ICP 0.01 Sample Suite#3 <br /> - Radionuclides <br /> Gross Alpha 12587-46-1 pCi/L - - - 15 Grab M900.0 2 to 4 Sample Suite#3 <br /> Gross Beta 12587-47-2 pCi/L - 5 Grab M900.0 2 to 4 Sample Suite#3 <br /> Radium-226,Total 13982-63-3 pCi/L 0.005 0.01 5 Grab M903.1 0.4 Sample Suite#3 <br /> Radium-226,Dissolved 13982-63-4 pCi/L - - - Grab M903.1 0.4 Sample Suite#3 <br /> [Radium 226+228 228 26+Ra- pCi/L 5 Grab Calculation 2 Sample Suite#3 <br /> AUGUST 2020 24 AMENDMENT 5 <br />