2023-06-05_HYDROLOGY - M1977342

• Permit No: M1977342
• IBM Index Class Name: Hydrology
• Doc Date: 6/5/2023
• Doc Name: Water Monitoring - Groundwater
• From: Clmax Molydenum
• To: DRMS
• Email Name: PSH
• Email Name: JLE
• Media Type: D
• Archive: No

Molybdenum Table 1
®Climax Mol
Y Annual Water Monitoring Data
A Freeport-McMoRan Company Henderson Mine
Location Sample Sample Analytical Iron,Dissolved' Manganese,Dissolved Selenium,Dissolved Zinc,Dissolved Specific Conductivity3 PH Sulfate
Date Time Laboratory (µg/L as Fe) (µg/L as Mn) (µg/L as Se) (pg/L as Zn) (PS/CM) (Standard Units (mg/L)
MNGW-1 5/22/2018 1029 Accutest <9.2 1.1 <0.42 19.2 248.5 6.3 81.3
MNGW-1 8/15/2018 11:30 Accutest <9.2 2.5 <0.42 18.8 194.4 6.2 66.9
MNGW-1 12/12/2018 12:11 Accutest 230.0 1.9 <0.42 38.7 368.8 6.5 144.0
MNGW-1 5/20/2019 11:37 ACZ <5 19.7 <0.10 19.0 257.3 6.0 74.4
MNGW-1 8/20/2019 11:04 ACZ 7.0 17.1 <0.10 24.0 199.9 5.9 73.8
MNGW-1 12/3/2019 10:40 ACZ 23.0 143.0 <0.10 44.0 304.3 6.2 82.0
MNGW-1 5/14/2020 10:50 ACZ <7 0.9 <0.10 16.0 267.3 6.3 79.1
MNGW-1 8/20/2020 11:00 ACZ <7 <0.4 <0.10 16.0 195.5 6.0 7.2
MNGW-1 12/14/2020 9:58 ACZ <7 12.0 <0.10 48.2 370.5 6.2 137.0
MNGW-1 6/2/2021 10:46 ACZ <7 0.4 <0.10 22.8 240.3 6.3 71.9
MNGW-1 8/13/2021 11:44 ACZ <7 0.5 <0.10 19.6 213.2 6.2 69.4
MNGW-1 11/30/2021 13:D3 ACZ <7 6.8 <0.10 49.9 319.8 6.3 120.0
MNGW-1 5/24/2D22 10:45 ACZ <7 <0.4 <0.10 21.3 210.6 6.2 77.5
MNGW-1 8/15/2D22 11:22 ACZ <7 2.4 <0.10 26.0 206.7 5.9 79.8
MNGW-1 12/12/2022 12:17 ACZ <7 2.0 <0.10 35.8 316.2 6.0 125.0
Numeric Protection Limit(NPL) 5,000 790 20 2,000 N/A(report) 6.5-8.5 NIA(report)
Location Sample Sample Analytical Iron,Dissolved' Manganese,Dissolved Selenium,Dissolved Zinc,Dissolved Specific Conductivity3 PH Sulfate
Date Time Laboratory (pg/L as Fe) (pg/L as Mn) (pg/L as Se) (µg/L as Zn) (PS/CM) (Standard Units) (mg/L)
BG-20 5/22/2018 11:17 Accutest <9.2 2.1) <0.42 19.8 43.6 6.8 6.3
BG-20 8/15/2018 1320 Accutest <9.2 3.0 <0.42 12.0 65.3 7.2 14.4
BG-20 12/12/2018 1045 Accutest 53.4 1.9 <0.42 11.1 77.5 7.6 16.7
BG-20 5/20/2019 15:15 ACZ 26.0 7.6 <0.10 18.0 80.1 7.0 12.5
BG-20 8/20/2019 12:50 ACZ <5.0 1.5 <0.10 9.0 58.8 7.0 12.7
BG-20 12/3/2019 12:45 ACZ <5.0 11.4 <0.10 13.0 84.3 6.8 15.8
BG-20 5/14/2020 1230 ACZ 48.0 5.9 <0.10 17.0 63.2 7.4 11.9
BG-20 8/18/2020 12:25 ACZ <7 1.7 <0.10 8.0 63.9 7.4 11.8
BG-20 12/14/2020 11:17 ACZ <7 2.4 <0.10 11.0 78.2 7.5 22.1
BG-20 6/14/2021 9:15 ACZ 12.9 1.1 <0.10 18.3 36.9 8.0 10.2
BG-20 8/13/2021 12:35 ACZ <7 1.4 <0.10 9.3 69.1 7.3 14.2
BG-20 12/1/2021 12:10 ACZ <7 1.1 <0.10 15.4 78.4 6.5 19.6
BG-20 5/24/2022 13:05 ACZ 16.4 2.5 0.13 14.5 43.6 6.9 10.3
BG-20 8/15/2022 12:16 ACZ <7 3.5 <0.10 22.7 68.9 7.1 14.7
BG-20 12/12/2022 9:20 ACZ <7 1.1 <0.10 17.5 78.2 7.0 20.2
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 200.8. pg/L=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