WI0700012_Monitoring (Report)_20240305

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CERTIFIED MAIL
February 26,2024
NC Division of Water Resources
Groundwater Resources Section
Attn:Blake Butcher
1636 Mail Service Center
Raleigh,NC 27699
Subject: Underground Injection Control Program
Quarterly Groundwater Monitoring Report
November 2023—January 2024
Injection Well Permit#WI0700012
PCS Phosphate Company,Inc.'
Tank Farm Remedial Action System
Dear Mr.Butcher,
Please see attached for the groundwater monitoring report associated with Injection Well Permit
#WI0700012 and the Tank Farm Remedial Action Plan. This report includes the sampling and reporting
requirements of the above referenced permit as well as the reporting requirements of the Tank Farm Remedial
Action Plan. Enclosed are a) piezometer level monitoring field sheets, b) the operation and maintenance
reports,
During this monitoring period maintenance was required on the pre-filters for the injection system,resulting
in planned downtime during the month of December for the manufacture to complete. This has been
documented in the operation and maintenance report.
Please do not hesitate to contact me at(252)617-5374 if you have any questions regarding this information.
Sincerely,
Brittany Curtis
Environmental &Technical Services Specialist
Nutrien—Aurora
Attachtnents
PC: 12-07-02 (w/attach)
cc: J.C.Stroud
T.B.Herring
J.A.Casey
H.B.Mill
1530 NC Hwy 306 South,Aurora,NC USA 27806 nuldon.com
t Effective January 1,2018,PC5 Phosphate Company,Inc.Is an Indirect subsidiary of Nutrien Ud.KS Phosphate Company,Inc.
remains the legal operating entity and per mittee.

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PCS PHOSPHATE-TANK FARM REMEDIAL ACTION PLAN
UARTERLY OPERATIONAL AND MAINTENANCE REPORT FOR THE INJECTION AND
WITHDRAWAL WATER WELLS
November 2023—January 2024
The Tank Farm Remediation System consists of a series of seven- (7) injection water wells located on the
south side of the Tank Farm Area and a series of fourteen(14)withdrawal water wells located on the north
side of the Tank Farm Area.
Iniection Water Well System
The injection water well system is operated with mine depressurization water(DPW).
Daily operational data is collected by the Shipping Department and reported to the Environmental Affairs
Department. The total monthly and quarterly volumes of water injected as well as the month end water level
in the Water Level Control Tank are;
TANK
DPW WATER TOTAL AVERAGE LEVEL
GALLONS GALLONS GPM FEET, MSL
November 267,999 267,999 6.0 6.4
December 134,993 134,993 3.0 6.3
January 292,255 292,255 6.5 5.5
TOTA1,S 695,247 695,247
Withdrawal Well System
The withdrawal water well pumps are monitored daily by the area Maintenance Department and preventative
maintenance work is performed as needed. The total monthly and quarterly withdrawal water volumes for
the period are:
SAND CROATAN
FORMATION FORMATION TOTAL AVERAGE
GALLONS GALLONS GALLONS GPM
November 264,535 466,531 731,066 10.8
December 180,992 303,708 484,700 6.8
January 471,868 506,212 978,080 11.3
TOTALS 917,395 1,276,451 2,193,846
2

Operation Notes:
10/19/23: The Culligan (manufacture)field technician visited the site to perform a routine maintenance PM
on the pre-filters for the injection system. During the PM he notified the operations department that two(2)
of the three(3)pre-filters required parts/media replacement.Parts were ordered to complete this work.
11/30/23: The Injection system was taken out of service to complete manufacture recommended PM for the
injection system pre-filters.
12/14/23: Pre-filter PM was completed and the Injection system was returned to service with two(2) of the
three(3)pre-filters in operation.The 3rd filter was scheduled to have a PM completed at a later date.
12/20/23: Installed new pump.
1/30/24: Pump stuck in casing,
3

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