2022-06-03_HYDROLOGY - M1977342

• Permit No: M1977342
• IBM Index Class Name: Hydrology
• Doc Date: 6/3/2022
• Doc Name Note: Annual Report
• Doc Name: Water Monitoring - Groundwater
• From: Climax Molybdenum
• To: DRMS
• Annual Report Year: 2021
• Email Name: PSH
• Email Name: JLE
• Media Type: D
• Archive: No

ClimaxMolbdenum Table 1
® 1 Annual Water Monitoring Data
A Freeport-McMoRan Company Henderson Mine
Location Sample Sample Analytical Iron,Dissolved' Manganese,Dissolved Selenium,Dissolved Zinc,Dissolved Specific Conductivity' pH Sulfate"
Date Time Laboratory /L as Fe /L as Mn /L as Se /L as Zn (PS/cm) Standard Units m /L
CC-10 6/7/2017 1310 Accutest 1530 16.5 056 284 268 72 30
CC-10 8R/2017 1535 Accutest 159 33 079 9.4 461 73 40
CC-10 11/30/2017 1239 Accutest 281 28 043 176 540 67 7.1
CC-10 5/22/2018 12.02 Accutest 291 11.4 <0 42 281 291 6 1 36
CC-10 8/15/2018 1252 Accutest <92 41.1 <0 42 12.1 464 69 55
CC-10 12/12/2018 1015 Accutest 468 2.7 <0 42 129 638 7.8 9.2
CC-10 5/20/2019 14,45 ACZ 236 22.8 <0 10 67 64 64 148
CC-10 8/20/2019 1225 ACZ 11 2.3 <0 10 8 386 70 4.9
CC-10 12/3/2019 11 35 ACZ 10 4.8 <0 10 13 697 66 9
CC-10 5/14/2020 1200 ACZ 363 345 <0 10 80 51 8 72 96
CC-10 8/18/2020 11 58 ACZ <7 1.7 <0 10 6 463 7.5 44
CC-10 12/14/2020 1038 ACZ 9 15.9 <0 10 164 71 3 734 172
CC-10 6/14/2021 9.50 ACZ 31 2 94 <0 10 <6 238 7 5 28
CC-10 8/13/2021 1320 ACZ 102 1 47 <0 10 8.1 44 2 7 6 <7
CC-10 12/1/2021 1350 ACZ 138 5 <0 10 188 62.5 72 8.2
'Specific Conductivity was not recorded during the 12/12/18 sample at CC-10
Location Sample Sample Analytical Iron,Dissolved' Manganese,Dissolved Selenium,Dissolved Zinc,Dissolved Specific Conductivity3 pH Sulfate
Date Time Laboratory /L as Fe /L as Mn /L as Se /L as Zn (PS/cm) Standard Units m /L
CC-30 6f7/2017 12:45 Accutest 61 8 152 <0 42 809 51.0 75 9 1
CC-30 8/7/2017 12.05 Accutest 19.5 161 <0.42 552 76.7 78 13.9
CC-30 11/30/2017 1210 Accutest 298 271 <0 42 977 1206 69 25.4
CC-30 5/22/2018 1228 Accutest 30 160 <0 42 793 62.5 6.6 11.2
CC-30 8/15/2018 13-35 Accutest <92 152 <0 42 62.2 1003 7 1 20.3
CC-30 12/12/2018 1325 Accutest 133 133 <0 42 597 131.5 6.5 253
CC-30 5/20/2019 1545 ACZ 80 424 <0 10 178 171.6 7.1 27.5
CC-30 8/20/2019 11 50 ACZ 22 114 <0 10 52 73.6 66 13.7
CC-30 12/3/2019 1315 ACZ 12 141 <0 10 66 1230 67 18.8
CC-30 5/14/2020 11,30 ACZ 214 334 <0 10 167 140.9 72 25.4
CC-30 8/18/2020 11 20 ACZ 19 132 <0 10 60 875 72 16.3
CC-30 12/14/2020 11 53 ACZ 10 142 <0 10 77 118.7 73 25.6
CC-30 6/14/2021 1035 ACZ 371 153 <0.10 563 407 69 21
CC-30 8/13/2021 1425 ACZ 31 1 192 <0.10 756 99.9 76 18 8
CC-30 12/1/2021 13.15 ACZ 256 185 <0.10 90 1165 69 208
Notes
RED=Resulting concentration falls outside of the Numeric Protection Limit(NPL) <=not detected at concentrations exceeding the laboratory method detection limit
BLUE=Rosner/Dixon Statistical outlier mg/L=milligrams per liter
'Analyzed by EPA Method 200 7 or 200 B
pg/L=micrograms per liter
Analyzed by EPA Method 200 8 pS/cm=micro Siemens per centimeter
3Analyzed using field instrumentation EPA=Environmental Protection Agency
°Analyzed by EPA Method 300 0 (Blank Field)=No data was required for this parameter during monthly pH assessment monitoring