NC0005363_Other Correspondence_20190319

‹Ciis DUKE W.H.Weatherspoon Plant
491 Power Plant Rd
ENERGY. ECl � 'iVrtir Lumberton,NC 28358
PROGRESS
APR i 2 2019 Mai/KeningtTynd II
ddress.
L.V.Sutton Energy Complex
��$�r �Q54©UFO,@,j 801 Sutton Steam Plant Rd
Permit ing Section Wilmington,NC 28401
March 19, 2019
0:910.341-4775
f:910.341-4790
Certified Mail#7017 2680 0000 1260,9317(2 copies)
NC DEQ- DWQ, Surface Water Protection Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Subject: Weatherspoon's March 2019 Discharge from Outfall 001
Dear Sir or Madam:
In accordance with A. (1) Footnote 1 of National Pollutant Discharge Elimination System
(NPDES) Permit No. NC0005363; we are submitting this written information on the March 14,
2019, discharge from Outfall 001 to the Lumber River. This notice is provided within ten (10)
days of the discharge with the following information:
• At 3:37 PM on March 11, 2019; the `greater than 24-hours in advance of a discharge due
to maintenance activities'verbal notification was made to NC DEQ.
• At 8:12 AM on March 13, 2019; the `greater than 24-hours in advance of a discharge due
to maintenance activities'verbal notification was made to NC WRC.
• At 10:39 AM on March 14, 2019; Outfall 001 was opened and allowed to discharge for
maintenance activities. This discharge will continue until the cooling pond level lowers to
its normal operating level. At this time, we cannot provide a date the discharge will
cease, it is expected to last for 2 to 4 weeks.
• The purpose of the maintenance discharge is to lower the Weatherspoon cooling pond
level to facilitate the construction of Outfall 003-Cooling Pond Emergency Spillway.
• Once the cooling pond reaches the desired level the discharge from Outfall 001 will
cease and construction will begin on the emergency spillway.
• No other maintenance discharges of Outfall 001 are expected, therefore there are no
steps to take to eliminate or prevent the recurrence of the discharge.
• At 3:30 PM on March 14, 2019; the `within 24-hours after discharge due to maintenance
activities'verbal notification was made to NC DEQ.
• At 3:32 PM on March 14, 2019; the `within 24-hours after discharge due to maintenance
activities'verbal notification was made to NC WRC
• We will monitor the discharge and provide the data as specified by our NPDES Permit.
• Instream monitoring of the Lumber River will be conducted upstream and downstream
as required by our NPDES permit and reported on the monthly DMR.

1
f Weatherspoon's March 2019 Discharge from Outfall 001
March 19,2019
Page 2
If there are any questions, please contact either:
• Mr. Kent Tyndall, Environmental Professional for the W. H. Weatherspoon Plant;
phone [phone] or e-mail [e-mail]; or
• Mr. Steve Cahoon, Environmental Specialist at our North Carolina Regional Headquarters,
phone [phone] or email [e-mail].
I certify,under penalty of law, that this document and all attachments were prepared under my direction or supervision
in accordance with a system designed to assure that qualified personnel properly gather and evaluate the information
submitted.Based on my inquiry of the person or persons who manage the system,or those persons directly responsible
for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and
complete. I am aware that there are significant penalties for submitting false information, including the possibility of
fines and imprisonment for knowing violations.
Sincerely,
Jeffrey Flanagan
Station Manager
C: Certified Mail#7017 2680,0000 1260,9324(1 copy)
Supervisor
NCDEQ-DWR, FRO
225 Green Street, Suite 714
Fayetteville, NC 28301

INTERNATIONALS PAPER
RIEGELWOOD MILL
JOHN L.RIEGEL ROAD
RIEGELWOOD,NC 28456
March 28, 2019
Certified Mail 7017 2620 0000 2411 5316
NC DEQ/DWQ/Water Quality Section APR 0
Attn: Central File c taT� L,ILS S
I^,
1617 Mail Service Center E141-D\NR SECI.101�1
Raleigh,NC 27699-1617
Subject: NPDES Permit No.NC0003298
2018 Annual BMP COD Exceedance Report
Dear Sir or Madam:
For its Best Management Practices (BMP) Plan, International Paper Riegelwood Mill chose
chemical oxygen demand(COD) as the parameter to warn of potential high loading to the
wastewater treatment system. An Upper Action Level (UAL) and Lower Action Level (LAL)were
established at 337,596 lbs/day and 301,143 lbs/day respectively.
COD levels above the LAL for two consecutive days or the UAL for any single day are investigated
to determine the cause,and necessary measures are taken to correct the high loading condition.
The 2018 daily COD loading to the waste treatment system averaged 201,990 lbs/day. During the
same time span,the maximum and minimum daily COD loadings were 462,036 lbs/day and 4,779
lbs/day,respectively.
There were four events where the UAL was exceeded and two events that exceeded the LAL;
however,none of the LAL exceedances occurred on two or more consecutive days.A table with
the dates and COD values is included below.
Date ASB Inlet COD >LAL of >UAL of BMP Event
(lbs/day) 310,143 337,596 (Y/N)
lbs/day(Y/N) lbs/day(Y/N)
July 14,2018 462,036 Y Y Y
July 28, 2018 341,823 Y Y Y
July 31, 2018 392,956 Y Y Y
September 24, 384,841 Y Y Y
2018
Daily COD values for 2018 are included as an attachment.
Investigations of the events delineated in the table above are explained below:
• July 14:There were three events which contributed to the high COD value: 1) North Black
Liquor Oxidation Tank(BLOX)was foaming over; 2) 5 Recovery Boiler west dissolving
tank level switch malfunction; &3) 5 Evaporators combined condensate was dirty.
S:IGroupslEnvironmentallWastewaterlDMR'SIDMR-20191COD Reportl2018 COD Report.docx

The North BLOX tank began foaming over around 10:25 AM.The tank level was dropped
but began foaming over again.A misaligned valve was found to be the problem allowing
condensate to boil out into the 50%liquor tanks.The 50%liquor was diluted to less than
40%solids and carried through the BLOX tanks.The valve misalignment was corrected.
The valves were also labeled to prevent this event in the future.
The 5 Recovery Boiler Dissolving Tank level switch malfunctioned.After investigating the
issues with the level control switch the malfunctioning switch was replaced.
The 5 Evaporators combined condensate was dirty due to misaligned valves which
bottled up the condensate requiring the need to sewer condensate leading to higher COD
loading.The valve alignment was corrected and the condensates were returned to the
scrubber for treatment.
• July 28: There were two events which contributed to the loading: 1)4 Set sump system
overload in the Pulp Mill area and 2) Draining the Boil Out tank in the Power and
Recovery area.
The batch system was running while the 4 Set was down. Knots from the Softwood
Knot Tank transferred to the New Knot Tank. The black liquor pumps were not
running which led to the tank overflowing into the sewers. The pumps were
turned back on once the 4 Set was restarted.
The boil out tank on the 5 Set Evaporators was drained during a lock-out tag-out
to make a tie-in on the combined condensate line. The draining was estimated to
last about 6 minutes and is a part of the lock out procedure. Once the Boil Out
Tank completed draining,the loading returned to normal.
• July 31: During loading of the large batch digesters upon start up from the annual mill
outage, only white liquor was loading.Normally,black liquor would also load into the
digesters.This liquor accumulated in the New Knot Tank and subsequently overflowed
into the sewer.The sump pump which re-collects liquor into the system could not keep up
with the overflow.
Ultimately,once the situation was discovered,the black liquor pumps were started to the
large batch digesters.This lowered the level in the New Knot Tank and stopped the
overflow.
• September 24: During the day shift,operators were directed to feed liquor to the sewer
from the BMP tank. (This feeding was necessary due to outage conditions related to
Hurricane Florence in order to keep the wastewater system biologically viable.) Later that
day the operators were directed to stop the liquor feed.The pump was turned as directed
but the valves were not lined up so that the tank contents would be sent to the Hardwood
Tank when needed.The night shift operator was instructed to turn on the blend pump to
the Hardwood Tank not realizing the valve misalignment situation,thus allowing the
liquor to be released to the sewer instead of the Hardwood Tank.
As a result of the event and investigation that followed,a procedure was put in place
requiring that a switching form be completed before starting the blend pump to ensure
that the liquor is routed to the Hardwood Tank unless it is necessary to send liquor to the
sewer for the wastewater system.
S:IGroupslEnvironmentallWastewaterlDMR'SIDMR-20191COD Report12018 COD Report.docx

l
By this signature,I certify that this information is true,accurate and complete to my knowledge.
If you have questions or need additional information,please contact Kevin Burk(910/362-3476)
or me (910/362-4934) at your convenience.
Sincerely,
0„..,90
Tim Gill
Environmental,Health,Safety,and Sustainability Manager
cc: Tom Tharrington,NC DEQ DWR-WiRO
Kim Fail,International Paper
S:IGroupslEnvironmentallWastewaterlDMRSIDMR-20191COD Reportl2018 COD Report.docx

2018 COD Data
Maximum 462036
Minimum 4779
Average 201990
LAL UAL
ASB Inlet- BMP
COD Mass- Event
Date: LB/Day 301,143 337,596 (Y/N) Comments•
1/1/2018 208383
1/2/2018 215012
1/3/2018 186812
1/4/2018 193204
1/5/2018 227312
1/6/2018 170096
1/7/2018 257561
1/8/2018 265092
1/9/2018 232563
1/10/2018 188893
1/11/2018 217847
1/12/2018 191361
1/13/2018 204460
1/14/2018 246062
1/15/2018 198457
1/16/2018 192095
1/17/2018 209315
1/18/2018 217120
1/19/2018 200360
1/20/2018 215451
1/21/2018 236067
1/22/2018 219759
1/23/2018 280731
1/24/2018 225475
1/25/2018 216018
1/26/2018 201323
1/27/2018 221369
1/28/2018 210248
1/29/2018 195198
1/30/2018 181677
1/31/2018 155454
2/1/2018 117961
2/2/2018 125407
2/3/2018 239996
2/4/2018 313548 313548 N LAL exceeded Not 2 or more consecutive days.
2/5/2018 237790
2/6/2018 188304
2/7/2018 156050 •
2/8/2018 219597
2/9/2018 204556
2/10/2018 192581
2/11/2018 179706
2/12/2018 205631
2/13/2018 218466
2/14/2018 201736
2/15/2018 196684
2/16/2018 207587
2/17/2018 244615 _
2/18/2018 239456
2/19/2018 219350
2/20/2018 224740
2/21/2018 235972
2/22/2018 199697
2/23/2018 192514
2/24/2018 206075
2/25/2018 198714
2/26/2018 246212
2/27/2018 236041
2/28/2018 232289
3/1/2018 218256
3/2/2018 228558
3/3/2018 244018 _
3/4/2018 223514
3/5/2018 244038
3/6/2018 233827
3/7/2018 269342
3/8/2018 211196

,
2018 COD Data
ASB Inlet- BMP
COD Mass- Event
Date LB/Day 301,143 337,596 (Y/N) Comments:
3/9/2018 228937
3/10/2018 219135
3/11/2018 274960
3/12/2018 253478
3/13/2018 263070
3/14/2018 266643
3/15/2018 296932
3/16/2018 268561
3/17/2018 277013
3/18/2018 282972
3/19/2018 221474
3/20/2018 252257
3/21/2018 232140
3/22/2018 210810
3/23/2018 217531
3/24/2018 200230
3/25/2018 263190
3/26/2018 231885
3/27/2018 232010
3/28/2018 226916
3/29/2018 242767
3/30/2018 170762
3/31/2018 230851
4/1/2018 202829
4/2/2018 198325
4/3/2018 225271
4/4/2018 155611
4/5/2018 188911
4/6/2018 176909
4/7/2018 243515
4/8/2018 221616
4/9/2018 174278
4/10/2018 206782
4/11/2018 179947
4/12/2018 209000
4/13/2018 204657
4/14/2018 198204
4/15/2018 204163 ,
4/16/2018 242254
4/17/2018 226923
4/18/2018 208084
4/19/2018 223809
4/20/2018 232917
4/21/2018 206832
4/22/2018 244758
4/23/2018 206175
4/24/2018 179719
4/25/2018 208014
4/26/2018 199861
4/27/2018 192794
4/28/2018 194756
4/29/2018 212410
4/30/2018 221474
5/1/2018 207608
5/2/2018 170656
5/3/2018 203162
5/4/2018 206670
5/5/2018 211114
5/6/2018 208882
5/7/2018 241165
5/8/2018 232634
5/9/2018 217059
5/10/2018 208638
5/11/2018 188567
5/12/2018 176541
5/13/2018 191286
5/14/2018 197651
5/15/2018 189443
5/16/2018 189246
5/17/2018 202000
5/18/2018 208945

r �
2018 COD Data
ASB Inlet- BMP
COD Mass- Event
Date: LB/Day 301,143 337,596 (Y/N) Comments:
5/19/2018 193790
5/20/2018 161224
5/21/2018 218663
5/22/2018 206960
5/23/2018 195151
5/24/2018 180982
5/25/2018 204303
5/26/2018 209446
5/27/2018 160595
5/28/2018 153960
5/29/2018 178333
5/30/2018 212583
5/31/2018 187180
6/1/2018 196178
6/2/2018 219258
6/3/2018 199745
6/4/2018 208140
6/5/2018 203157
6/6/2018 201418
6/7/2018 213751
6/8/2018 198052
6/9/2018 197798
6/10/2018 204453
6/11/2018 193716
6/12/2018 181570
6/13/2018 227639
6/14/2018 256705
6/15/2018 233236
6/16/2018 220897
6/17/2018 223744
6/18/2018 210103
6/19/2018 203483
6/20/2018 224049
6/21/2018 208263
6/22/2018 225438
6/23/2018 209164
6/24/2018 197800
6/25/2018 191148
6/26/2018 176890
6/27/2018 200515
6/28/2018 206612
6/29/2018 219762
6/30/2018 201929
7/1/2018 180021
7/2/2018 175582
7/3/2018 202232
7/4/2018 191958
7/5/2018 196103
7/6/2018 228456
7/7/2018 212807
7/8/2018 208253
7/9/2018 210195
7/10/2018 198216
7/11/2018 224573
7/12/2018 242293
7/13/2018 292450
7/14/2018 462036 462036 462036 Y UAL exceeded
7/15/2018 240059
7/16/2018 133924
7/17/2018 45186
7/18/2018 18031
7/19/2018 4836
7/20/2018 4779
7/21/2018 19868
7/22/2018 32576
7/23/2018 82168
7/24/2018 188654
7/25/2018 168430
7/26/2018 71300
7/27/2018 132782
7/28/2018 341823 341823 341823 Y UAL exceeded

2018 COD Data
ASB Inlet- BMP
COD Mass- Event
Date: LB/Day 301,143 337,596 (Y/N) Comments
7/29/2018 157048
7/30/2018 117209
7/31/2018 392956 392956 392956 Y UAL exceeded.
8/1/2018 262410
8/2/2018 202442
8/3/2018 206005
8/4/2018 187870
8/5/2018 241423
8/6/2018 202892
8/7/2018 207536
8/8/2018 214867
8/9/2018 181645
8/10/2018 183774
8/11/2018 182753
8/12/2018 208137
8/13/2018 189106
8/14/2018 207498
8/15/2018 252093
8/16/2018 201941
8/17/2018 194058
8/18/2018 189957
8/19/2018 176261
8/20/2018 188766
8/21/2018 204619
8/22/2018 175290
8/23/2018 186787
8/24/2018 187200
8/25/2018 167414
8/26/2018 167205
8/27/2018 184227
8/28/2018 186958 -
8/29/2018 176301
8/30/2018 179356
8/31/2018 183864
9/1/2018 205414
9/2/2018 208837
9/3/2018 210799
9/4/2018 189518
9/5/2018 175689
9/6/2018 177167
9/7/2018 184162
9/8/2018 168094
9/9/2018 183492
9/10/2018 205069
9/11/2018 182266
9/12/2018 131185
9/13/2018 Hurncan Florence:Mill Shutdown.
9/14/2018 Hurrican Florence:Mill Shutdown.
9/15/2018 Hurrican Florence*Mill Shutdown.
9/16/2018 Hurncan Florence:Mill Shutdown
9/17/2018 Hurncan Florence:Mill Shutdown.
9/18/2018 Hurncan Florence.Mill Shutdown
9/19/2018 Hurncan Florence:Mill Shutdown.
9/20/2018 Hurncan Florence:Mill Shutdown.
9/21/2018 Hurncan Florence Mill Shutdown.
9/22/2018 Hurncan Florence:Mill Shutdown.
9/23/2018 Hurncan Florence.Mill Shutdown.
9/24/2018 384841 384841 384841 Y UAL exceeded.
9/25/2018 181045
9/26/2018 145897
9/27/2018 174089
9/28/2018 186242
9/29/2018 168630
9/30/2018 162920
10/1/2018 115779 _
10/2/2018 194686
10/3/2018 204727
10/4/2018 189521
10/5/2018 227376
10/6/2018 198872
10/7/2018 204801

4
2018 COD Data
ASB Inlet- BMP
COD Mass- Event
Date. LB/Day 301,143 337,596 (Y/N) Comments-
10/8/2018 193875
10/9/2018 303843 303843 N LAL exceeded Not 2 or more consecutive days.
10/10/2018 206903
10/11/2018 180269
10/12/2018 174829
10/13/2018 195912
10/14/2018 196550
10/15/2018 172938
10/16/2018 180096
10/17/2018 204811
10/18/2018 181345
10/19/2018 248736
10/20/2018 219849
10/21/2018 195431
10/22/2018 190822
10/23/2018 191819
10/24/2018 189336
10/25/2018 193905
10/26/2018 204388
10/27/2018 198653
10/28/2018 246437
10/29/2018 229744
10/30/2018 280938
10/31/2018 213536
11/1/2018 204076
11/2/2018 261329
11/3/2018 223840
11/4/2018 179227
11/5/2018 199436
11/6/2018 173728
11/7/2018 183049
11/8/2018 168938
11/9/2018 212571
11/10/2018 228444
11/11/2018 187773
11/12/2018 166903
11/13/2018 143248
11/14/2018 167942
11/15/2018 183950
11/16/2018 273585
11/17/2018 201688
11/18/2018 192037
11/19/2018 161584
11/20/2018 169515
11/21/2018 158812
11/22/2018 159920
11/23/2018 168348
11/24/2018 182604
11/25/2018 178071
11/26/2018 165599
11/27/2018 168093
11/28/2018 189952
11/29/2018 253790
11/30/2018 223350
12/1/2018 191353 •
12/2/2018 195023
12/3/2018 195164
12/4/2018 198220
12/5/2018 208043
12/6/2018 228628
12/7/2018 160548
12/8/2018 184314
12/9/2018 214570
12/10/2018 231952
12/11/2018 179408
12/12/2018 169202
12/13/2018 195268
12/14/2018 196577
12/15/2018 198068
12/16/2018 201411
12/17/2018 185700

.
2018 COD Data
ASB Inlet- BMP
COD Mass- Event
Date• LB/Day 301,143 337,596 (Y/N) Comments
12/18/2018 164719
12/19/2018 179659
12/20/2018 171445
12/21/2018 165958
12/22/2018 181177
12/23/2018 193022
12/24/2018 170266
12/25/2018 165758
12/26/2018 169329
12/27/2018 182434
12/28/2018 184357
12/29/2018 179139
12/30/2018 198068
12/31/2018 261490