2021-01-14_REVISION - M1977300 ‎(3)‎

• Permit No: M1977300
• IBM Index Class Name: REVISION
• Doc Date: 1/14/2021
• Doc Name: Adequacy Review Response #3
• From: Colorado Legacy Land
• To: DRMS
• Email Name: AME
• Media Type: D
• Archive: No

COLORADO LEGACY LAND
$CHWARTZWALDER MINE
TABLE E-4. MINE PERMIT#M-1977-300,QUARTERLY SURFACE WATER AND GROUNDWATER SAMPLE SUMMARY
Surface Water Quality
Surface Water Quality Standards(CDPHE,2018)^ Standard,Segment 17b,Ralston Creek
(CDPHE,2019)B Colorado
Aquatic Life 2 Groundwater Sample Analytical Detection Sample Suite
Analyte CAS No. Units Human Health Aquatic Life z (Dissolved Quality Standards Type Method(s) Limit Name
(Total Concentrations) (Dissolved Concentrations) Concentrations) (CDPHE,2016)c
Domestic Chronic
Water Agriculture Water+ Acute 30-Day Acute Chronic
Supply Fish 1 Day Average
Metals
Aluminum 7429-90-5 mg/L - 6.68 0.087 - Grab M200.7 ICP 0.05 Sample Suite#3
Antimony 7440-36-0 mg/L 0.006 - - - - 0.006 Grab M200.8 ICP-MS 0.0004 Sample Suite#3
0.34 0.01 Grab M200.8 ICP-MS 0.0002 Sample Suite#3
Arsenic 7440-38-2 mg/L 0.00002 0.1 0.34 0.15 Total = Total=
n a 0.00002
Boron 7440-42-8 mg/L - - - - 0.75 0 0 0 0 Sample Suite#3
0.11 0.1 Sample Suite#3
Chromium III 7440-47-3 mg/L 0.05 0.1 0.85 0.11 Total=
Total = n/a
0.05
Chromium VI 18540-29-9 mg/L 0.05 0.1 0.016 0.011 0.016 0.011 - Sample Suite#3
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
Iron 7439-89-6 mg/L 0.3 - 1 - 1.0 0.3 Grab M200.7 ICP 0.03 Sample Suite#3
0.11 0.0043 0.05 Grab M200.8 ICP-MS 0.0001 Sample Suite#3
Lead 7439-92-1 mg/L 0.05 0.1 0.11 0.0043 Total= Total=n/a
0.05
Manganese 7439-96-5 mg/L 0.05 0.2 3.51 1.94 3.51 1.94 0.05 Grab M200.7 ICP 0.01 Sample Suite#3
Mercury 7439-97-6 mg/L 0.21 - - 0.00001 - 0.00001 0.002 Grab M245.1 CVAA 0.0002 Sample Suite#3
Molybdenum 7439-98-7 mg/L 0.1 0.3 - - - 0.15 0.21 Grab M200.8 ICP-MS 0.0002 Sample Suite#3
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
Silver 7440-224 mg/L 0.0005 - 0.0047 0.00017 0.0047 0.0002 0.05 Grab M200.8 ICP-MS 0.0001 Sample Suite#3
Thallium 7440-28-0 mg/L 0.0005 - 0.015 - - 0.002 Grab M200.8 ICP-MS 0.0001 Sample Suite#3
Uranium 7440-61-1 mg/L 0.03 - 4.12 2.57 - - 0.03 Grab M200.8 ICP-MS 0.0001 Sample Suite#3
Zinc 7440-66-6 mg/L 5 2 0.25 0.19 0.25 0.19 5 Grab M200.7 ICP 0.01 Sample Suite#3
Radionuclides
Gross Alpha 12587-46-1 pCi/L - - - - 15 Grab M900.0 2 to 4 Sample Suite#3
Gross Beta 12587-47-2 pCi/L - - 5 Grab M900.0 2 to 4 Sample Suite#3
Radium-226,Total 13982-63-3 pCi/L 0.005 0.01 - 5 Grab M903.1 0.4 Sample Suite#3
Radium-226,Dissolved 13982-63-4 pCi/L - - - - Grab M903.1 0.4 Sample Suite#3
Radium 226+228 228 26+Ra- pCi/L - 5 Grab Calculation 2 Sample Suite#3
JANUARY 2021 32 AMENDMENT 5