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

Climax Molybdenum Table 2
Y Annual Water Monitoring Data
A Freeport-McMoRan Company Henderson Mill
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 S/cm Standard Units m /L
MLGW-7 5/10/2017 1310 Accutest <9 2 096 <0 42 52 208.9 6.7 22.4
MLGW-7 8/16/2017 838 Accutest 15.5 <0.26 0.42 8.4 167 67 20
MLGW-7 11/15/2017 1325 Accutest <9 2 081 <0 42 3.3 1601 66 17.7
MLGW-7 5/16/2018 13:10 Accutest 95 0.41 <0.42 75 1415 63 17
MLGW-7 8/9/2018 13.05 Accutest <46 32 <2 1 246 1546 62 146
MLGW-7 12/4/2018 1230 Accutest 35.6 089 <0 42 <1.9 149.4 68 136
MLGW-7 5/14/2019 1032 ACZ 14 <0 4 03 <4.0 151.1 65 187
MLGW-7 8/13/2019 08 30 ACZ 25 0.6 02 <4 0 144 6 129
MLGW-7 11/13/2019 1247 ACZ 17 07 01 <4 0 1385 67 10.3
MLGW-7 5/7/2020 10:25 ACZ 14 <0.4 01 <6 0 1306 66 104
MLGW-7 8/27/2020 9,40 ACZ 8 06 01 <6 0 144 6.8 7.1
ENumeric
12/9/2020 1053 ACZ 21.3 069 <0 1 <6 0 125.8 67 6.7
5/25/2021 11,54 ACZ 73 0.89 <0 1 <6 0 1094 66 <1
8/26/2021 10.03 ACZ <7 1.42 <0 1 <6 0 1289 66 4 2
12/9/2021 11:23 ACZ 7 9 1 16 <0 1 <6 0 1239 65 7 1
otection Limit(NPL) 5,000 420 20 2,000 N/A(report) 6.5-8.5 N/A(report)
Location Sample Sample Analytical Iron,Dissolved' Manganese,Dissolved Selenium,Dissolved Zinc,Dissolved Specific Conductivity3 PH k604
Date Time Laboratory /L as Fe /L as Mn /L as Se /L as Zn (VS/cm) Standard Units
MLGW-15 5/10/2017 1250 Accutest 9.3 087 <0 42 49 1584 6.5
MLGW-15 8/16/2017 9.21 Accutest 21 2 <0 26 081 6.5 1519 6.5
MLGW-15 11/15/2017 1520 Accutest <230 0.78 1 3 5.6 1500 65 MLGW-15 5/16/2018 1246 Accutest <46 045 1 138 1271 65 MLGW-15 8/10/2018 1032 Accutest <46 29 <21 233 1401 65
MLGW-15 12/6/2018 12.35 Accutest 466 44 13 <1 9 1380 68 578
MLGW-15 5/14/2019 0953 ACZ <5 0 <0 4 <0 1 <4 0 1250 65 526
MLGW-15 8/13/2019 10:20 ACZ <5 0 <0 4 01 <4 0 1264 67 528
MLGW-15 11/13/2019 13 15 ACZ <5 0 <0 4 <0.1 <4 0 1293 68 551
MLGW-15 5/7/2020 1205 ACZ <7 0 <0 4 <0.1 <6 0 1327 65 559
MLGW-15 8/27/2020 11,10 ACZ <7.0 17 01 <60 1369 66 563
MLGW-15 12/9/2020 1135 ACZ 129 <0 4 Oil <6 0 1334 67 563
MLGW-15 5/25/2021 1101 ACZ <7.0 <0 4 <0 1 <6 0 1182 6.7 576
MLGW-15 8/26/2021 11 39 ACZ <7 0 <0 4 011 160 1229 66 585
MLGW-15 12/9/2021 1217 ACZ <7.0 0.55 Oil <6 0 1289 66 501
Notes
RED=Resulting concentration falls outside of the Numeric Protection Limit(NPL) <=not detected at concentrations exceeding the laboratory method detection limit
BLUE=Rosner Statistical outlier mg/L=milligrams per liter
'Analyzed by EPA Method 200 7 or 200 8 NglL=micrograms per liter
Analyzed by EPA Method 200 8 pS/cm=micro Siemens per centimeter
'Analyzed 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