2024-01-17_REVISION - M2015030

• Permit No: M2015030
• IBM Index Class Name: Revision
• Doc Date: 1/17/2024
• Doc Name: Adequacy Review Response
• From: Asphalt Specialties CO
• To: DRMS
• Type & Sequence: AM2
• Email Name: ECS
• Email Name: MAC
• Media Type: D
• Archive: No

Chavers Mining Resource Table 3
Baseline Groundwater Quality Results
First Five (5) Quarters of Data
1st Quarter 2022 - 1st Quarter 2023
Sample Event: 1st Quarter Sampling Event 2nd Quarter Sampling Event 3rd Quarter Sampling Event 4th Quarter Sampling Event 5th Quarter Sampling Event
Well Type: BKG Wells(Up-gradient) BKG Wells(Up-gradient) BKG Wells(Up-gradient) BKG Wells(Up-gradient) BKG Wells(Up-gradient) Lowest Chavers
Analyte/Parameters CAS No. Sample ID: MW-2 MW-3 MW-3D MW-2 MW-2D MW-3 MW-2 MW-3 MW-3D MW-2 MW-2D MW-3 MW-2 MW-3 MW-3D INS Tables 1-4 Site-Specific
Date: 3/29/2022 3/29/2022 3/29/2022 6/28/2022 6/28/2022 6/2812022 9/21/2022 9/21/2022 9/21/2022 12/6/2022 12/6/2022 12/6/2022 3/30/2023 3/30/2023 3/30/2023 Groundwater Groundwater
Type: Grab Grab QA/QC Grab QA/QC Grab Grab Grab QA/QC Grab QA/QC Grab Grab Grab Qq/QC Quality Standards Quality Standards
Units mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L mg/L
Dissolved _ ..._.-. . I ,, ,
Aluminum 7 429-90-5 mg/L 7�01
0.018 0.018 0.012 0.011 0.006 0.016 0.031 0.025 0.037 0.042 0.017 0.034 0.009 0.011 6 5
Antimony 7440-36-0 mg/L 0.0012 U 0.0012 U 0.0012 U 0.0012 U 0.0012 U 0.0012 U 0.0012 U 0.0012 U 0.0012 U 0.0012 U 0.0012 U 0.0012 U 0.0012 U 0.0012 U 0.006 0.006
Arsenic 7440-38-2 mg/L 0.0006 U 0.0006 U 0.0006 U 0.0006 U 0.0006 U 0.0006 U 0.0006 U 0.0006 U O.OD06 U 0.0006 U 0.0006 U 0.0006 U 0.0006 U 0.0006 U 0.01 0.01
Barium 7440-39-3 mg/L 0.0695 0.0682 0.104 0.1054 0.0628 0.1038 0.0697 0.0704 0.125 0.1228 0.0767 0.1044 0.0604 0.0595 2 2
Beryllium 744041-7 mg/L 0.0001 U 0.0001 U 0.0001 U 0.0001 U 0.0001 U 0.0001 U 0.0001 U 0.0001 U 0.0001 U 0.0001 U 0.0001 U 0.0001 U 0.0001 U 0.0001 U 0,004 0.004
Boron 7440-42-8 mg/L . 0.33 0.35 0.18 0.18 0.47 0.22 0.55 0.56 0.26 0.26 0.46 0.22 0.38 0.38 0.75 0.76
Cadmium 744043-9 mg/L 0.0001 0.0001 U 0.0001 U 0.0001 0.0001 0.0001 U 0.0001 U 0.0001 U 0.0D01 U 0.0001 U 0.0001 U 0.0001 U 0.0001 U 0.0001 U O.01301 U 0.005 0.005
Chloride 16887-00�i mg/L 152.94 225.37 224.67 151.23 162.94 232.66 154.63 231.48 237.28 187.09 188.42 229.83 199.55 206.15 207.31 250 250
Chromium(Total)[Cr(III)+Cr(VI)] 7440-47-3 mg/L 0.0015 U 0.0015 U 0.0015 U 0.0015 U 0.0015 U 0.0015 U 0.0015 U 0.0015 U 0.0015 U 0.0015 U 0.0015 U 0.0015 U 0.0015 U 0.0015 U 0.0015 U 0.1 0.1
Cobalt 7440.484 mg/L 0.0018 0.0006 0.0006 0.0021 0.0021 0.0006 0.0022 0.0006 0.0006 0.002 0.002 0.0005 0.0019 0.0007 0.0007 0.05 0.05
Copper 7440-50-8 mg/L 0.0019 0.0014 0.0014 0.002 0.002 0.0018 0.0018 0.0017 0.0015 0.0017 0.0017 0.0016 0.0013 0.001 0.001 0.2 0.2
Flouride 1698448-8 mg/L 1.05 1.51 1.52 1.07 1.08 1.45 0.86 1.16 1.2 1.2 1.2 1.36 1 U 1.41 1.44 2 2
Iron 7439-89-6 mg/L 0.015 0.013 0.021 0.005 U 0.005 U 0.005 U 0.008 0.006 0.005 0.007 0.008 0.007 0.011 0.005 U 0.005 U 0.3 0.3
Lead 7439-92-1 mg/L 0.0D01 U 0.0001 U 0.0001 U 0.0D01 U 0.0001 U 0.0001 U 0.0001 U 0.0001 U 0.0001 U 0.0001 U 0.0001 U 0.0001 U 0.0001 U 0.0001 U 0.0001 U 0.05 0.05
Lithium 7439-93-2 mg/L 0.04 0.04 0.04 0.05 U 0.05 U 0.05 U 0.05 0.05 U 0.05 U 0.05 U 0.05 U 0.05 U 0.03 0.03 0.03 2.5 2.5
Manganese 7439-965 mg/L 0.0192 0.0008 U 0.0008 U 0.0213 0.0175 0.0014 0.0008 U 0.0008 U 0.0008 U 0.002 0.0017 0.0008 U 0.0021 0.0018 0.0024 0.05 0.397
Molybdenum 7439-98-7 mg/L 0.0095 0.0151 0.0146 0.0102 0.0098 0.0164 0.007 0.0117 0.0116 0.008 0.0077 0.0071 0.0061 0.0131 0.0129 0.21 0.21
Nickel 7440-02-0 mg/L 0.0027 0.0028 0.0027 0.0029 0.0028 0.0028 0.0028 0.0028 0.0027 0.0026 0.0027 0.0025 0.0026 0.0023 0.0023 0.1 0.1
Nitrate(NO3) 1479755-8 mg/L 7.41 5.31 5.27 2.57 2.59 1.19 4.36 1.67 1.68 4.13 4.21 2.53 3.46 3.78 3.81 10 10
Nitrite(NO2) 14797-65-0 mg/L 0.03 U 0.03 U 0.03 U 0.03 U 0.03 U 0.03 U 0.03 U 0.03 U 0.03 U 0.03 Ul 0.03 U 0.03 U 0.3 U 0.3 U 0.3 U 1 1
Nitrate-Nitrite,Total(NO2+14O3) mg/L 7.41 5.31 5.27 2.67 2.69 1.19 4.36 1.67 1.68 4.13 4.21 2.53 3.46 3.78 3.81 10 10
Selenium 778249-2 mg/L 0.0015 0.0021 0.002 0.001 0.0012 0.0013 0.0029 0.0022 0.002 0.0022 0.0015 0.0016 0.0008 U 0.0012 0.0009 0.02 0.02
Silver 7440-22-4 mg/L O.OD05 U 0.0005 U 0.0005 U 0.OD05 U 0.0005 U 0.0005 Ul 0.0005 U 0.0005 U 0.0D05 U 0.0005 U 0.0005 U 0.0005 U 0.0005 U 0.0005 U 0.0005 U 0.06 0.05
Sulfate 14808-79-8 mg/L 194.82 301.12 299.95 217.06 220.6 280.63 1 218.16 282.62 286.04 231.22 231.87 265.12 201.31 237.66 239.2 250 301.12
Thallium 7440-28-0 mg/L 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.0002 U 0.002 0.002
Total Dissolved Solids(TDS) 10-33-3 mg/L 776 979 973 783 780 884 765 1014 1008 1 $90 895 996 823 888 892 1267.5 1267.5
Uranium 7440-61-1 mg/L 0.0071 0.0254 0.0253 0.0077 0.0073 0.0067 0.0071 0.0171 0.0175 1 0.007 0.0072 0.0069 0.0037 0.0161 0.0148 0.03 0.03
Vanadium 7440-62-2 mg/L 0.001 U 0.001 U 0.001 U 0.001 U 0.001 U 0.001 U 0.001 U 0.001 U 0.001 U 0.001 U 0.001 U 0.001 U 0.001 U 0.001 U 0.D01 U 0.1 0.1
Zinc 7440 665 mg/L 0.001 0.001 U 0.001 U 0.001 0.001 U1 0.001 0.001 U1 0.001 U 0.001 Ul 0.001 U1 0.001 U 0.001 U 0.001 U 0.001 U 0.001 U 2 2
pH - su 7.5 7.7 7.6 7.5 7.3 7.6 6.9 7.1 7.2 6.7 6.7 6.6 7.0 1 7.3 1 7.4 6.5-8.5 6.5-8.5
Notes:
=Chavers Site-Specific Groundwater Quality Standard value
=Source of Chavers Site-Speck Groundwater Quality Standard value
=Background concentration result exceeds lowest applicable INS Tables 1-4 standard
=Highest Background TDS value
Bold =Concentration detected above reporting limit
=Calculated Value(Per WQCC Regulation No.41,for Background TDS Value between 501-10,000 mg/L,the Maximum Allowable TDS Concentration is 1.25 times the background value)
BKG =Background
INS =Interim Narrative Standard
mg/L =milligrams per liter
POC =Point of Compliance
su =standard unit
U =Analyte not detected above reporting limit
WQCC =Water Quality Control Commission