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

Climax Mol bdenum Table 2
rI. Y Annual Water Monitoring Data
A Freeport-McMoRan Company Henderson Mill
Location Sample Sample Analytical Iron,Dissolved' Manganese,Dissolved2 Selenium,Dissolved' Zinc,Dissolved2 Specific Conductivity" pH" Sulfate"
Date Time Laboratory (pg/L as Fe) (pg/L as Mn) (pg/L as Se) (pg/L as Zn) (PS/CM) (Standard Units) (mg/L)
MLGW-7 5/16/2018 13:10 Accutest 9.5 0.41 <0.42 7.5 141.5 6.3 17
MLGW-7 8/9/2018 13:05 Accutest <46 3.2 <2.1 24.6 154.6 6.2 14.6
MLGW-7 12/4/2018 12:30 Accutest 35.6 0.89 <0.42 <1.9 149.4 6.8 13.6
MLGW-7 5/14/2019 10:32 ACZ 14 <0.4 0.3 <4.0 151.1 6.5 18.7
MLGW-7 8/13/2019 0830 ACZ 25 0.6 0.2 <4.0 144 6 12.9
MLGW-7 11/13/2019 12:47 ACZ 17 0.7 0.1 <4.0 138.5 6.7 10.3
MLGW-7 5/7/2020 10:25 ACZ 14 <0.4 0.1 <6.0 130.6 6.6 10.4
MLGW-7 8/27/2020 9:40 ACZ 8 0.6 0.1 <6.0 144 6.8 7.1
MLGW-7 12/9/2020 10:53 ACZ 21.3 0.69 <0.1 <6.0 125.8 6.7 6.7
MLGW-7 5/25/2021 11:54 ACZ 7.3 0.89 <0.1 <6.0 109.4 6.6 <1
MLGW-7 8/26/2021 1003 ACZ <7 1.42 <0.1 <6.0 128.9 6.6 4.2
MLGW-7 12/9/2021 11:23 ACZ 7.9 1.16 <0.1 <6.0 123.9 6.5 1 7.1
MLGW-7 5/17/2022 943 ACZ 12.4 <0.4 <0.1 <6.0 114.9 6.5 1 8.4
MLGW-7 8/25/2022 12:29 ACZ 8.7 0.66 0.13 15.3 125.1 6.6 5.8
MLGW-7 12/19/2022 15:24 ACZ 12.8 <0.4 <0.2 <6.0 114.4 6.5 5
Numeric Protection 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 Conductivity' pH" Sulfate°
Date Time Laboratory (pg/L as Fe) (µg/L as Mn) (µg/L as Se) (pg/L as Zn) (PS/CM) (Standard Units) (mg/L)
MLGW-15 5/16/2018 12:46 Accutest <46 0.45 1 13.8 1271 6.5 545
MLGW-15 8/10/2018 10:32 Accutest <46 2.9 <2.1 23.3 1401 6.5 564
MLGW-15 12/6/2018 12:35 Accutest 466 4.4 1.3 <1.9 1380 6.8 578
MLGW-15 5/14/2019 09:53 ACZ <5.0 <0.4 <0.1 <4.0 1250 6.5 526
MLGW-15 8/13/2019 10:20 ACZ <5.0 <0.4 0.1 <4.0 1264 6.7 528
MLGW-15 11/13/2019 13:15 ACZ <5.0 <0.4 <0.1 <4.0 1293 6.8 551
MLGW-15 5/7/2020 12:05 ACZ <7.0 <0.4 <0.1 <6.0 1327 6.5 559
MLGW-15 8/27/2020 11:10 ACZ <7.0 1.7 0.1 <6.0 1369 6.6 563
MLGW-15 12/9/2020 11:35 ACZ 12.9 <0.4 0.11 <6.0 1334 6.7 563
MLGW-15 5/25/2021 11:01 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 0.11 <6.0 1229 6.6 585
MLGW-15 12/9/2021 12:17 ACZ <7.0 0.55 0.11 <6.0 1289 6.6 501
MLGW-15 5/17/2022 11:02 ACZ <7.0 <0.4 <0.1 <6.0 1242 6.5 582
MLGW-15 8/23/2022 14:25 ACZ <7.0 <0.4 <0.1 19.8 1367 6.7 646
MLGW-15 12/19/2022 1532 ACZ <7.0 <0.4 <0.2 <6.0 1279 6.5 608
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. 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