NCS000251_2022 DMR_20220420

4,6,
Georgia-Pacific Chemicals LLC
Conway Resins Plant
P.O. Box 368
Conway, NC 27820
Phone [phone]
Fax [phone]
April 07, 2022
Certified Mail — 7019 0160 0001 1456 2393
DEQ Raleigh Regional Office
Attn: DEMLR Regional Office
3800 Barrett Drive
Raleigh, NC 27609
RE: Stormwater Permit NCS000251
.Georgia-Pacific Chemicals LLC
Northampton County
Stormwater Monitoring - February 1, 2022 — July 31, 2022
Conway, NC
Dear Gentlemen/Ladies;
Georgia-Pacific Chemicals LLC (GP) is respectfully submitting the facility's 2022 Spring Stormwater
(February 2022-July 2022) sampling data on Form SVVU-246-051100, pursuant to the monitoring
requirements set forth in the above noted permit. Although NPDES stormwater permit NCS000251
expired on January 31, 2016, the facility continues to discharge stormwater per the automatic
authorization to discharge beyond the expiration date granted in Part I1, Section B: General Condition 1,
of the permit. The facility submitted all necessary forms required by the agency to renew the permit on
July 30, 2015.
Note that the analytical data showed that the benchmark value noted in Table 3 of the permit for Total
Nitrogen was exceeded in SWDBO-002 during this rain event. A Tier I Inspection and investigation was
conducted within two weeks of receiving the sampling results and documented in the facility's S WP3. This
exceedance is noted in the attached DMR for your review.
As part of the noted Tier I investigation, we requested that our contract laboratory reanalyze the SWDB0-002
sample for Total Nitrogen. The required Total Nitrogen value is calculated by combining the values of EPA
351.2 (Nitrogen, Total KjeldahI) and EPA 353.2 (Nitrogen, Nitrate -Nitrite), however, the laboratory only ran
EPA 351.2 which made the reanalysis inconclusive. These results did not validate or disprove our original
results. As a result of this communication, we are continuing with our investigation as originally initiated.
The results from the reanalysis are enclosed in this submission for your review.
Should you have any questions, please feel free to contact Tim Riddick at [phone].
Sincerely,

Sincerely,
-zf '.57 C)
RobertDalton
Plant Manager

STORMWATER DISCHARGE OUTFALL (SDO)
MONITORING REPORT
Permit Number: NC NCS000251 or
Certificate of Coverage Number: NCG
FACILITY NAME Georgia-Pacific Chemicals LLC
PERSON COLLECTING SAMPLE(S) Walter Lee
CERTIFIED LABORATORY(' Universal Laboratories Lab# 543
Summit Environmental Lab# 631
Georgia-Pacific Chemicals LLC Lab# 5464
Part A: Specific Monitoring Requirements
SAMPLES COLLECTED DURING CALENDAR YEAR: 2022
(This monitoring report shall be received by the Division no later than 30 days from
the date the facility receives the sampling results from the laboratory.)
COUNTY Northampton
PHqQr -581 5-1232
(SIGNATURE OF PERMITTEE OR DESIGN`EE)
By this signature, I certify that this report is accurate
complete t0 the best of my knowledge
Outfall
No.
Date
Sample
Collected
50050
00556
00310
00340
00600
00665
00400
Total
Flow
Oil and
Grease
BODS
COD
Total
Nitrogen
Total
Phosphorus
PH
mo/dd/ r
MG
mo
m
m
m /l
Mg/1
S.U.
001
03/09/22
0.005
a5
4
43.4
1.44
0.28
6.9
002
03/09/22
0.024
<5
7
45.8
31.15
0.20
8.4
003
03/09/22
0.003
<5
12
20.3
0.55
a0.02
8.1
004
1 03/09/22
0.004
<5
13
24.9
1.10
0.05
1 6.9
Does this facility perform Vehicle Maintenance Activities using more than 55 gallons of new motor oil per month?_%_yes _no
(If yes, complete Part B)
Part B: Vehicle Maintenance Activitv Monitoring Requirements
Ontfall
No.
Date
Sample
Collected
50050
00556
00530
00400
Total
Flow
Oil
and
Grease
Total
Suspended
Solids
pH
New Motor Oil
Usage
g
mo/ddI r
MG
m l
mg/1
S.U.
gallmo
002
03/09/22
0.024
<5
21.9
8.4
100
Form SWU-246-051100
Page 1 of 3

STORMWATER DISCHARGE OUTFALL (SDO)
MONITORING REPORT
Permit Number: NC NCS000251 or
Certificate of Coverage Number: NCG
FACILITY NAME Georgia-Pacific Chemicals LLC
PERSON COLLECTING SAMPLE(S) Walter Lee
CERTIFIED LABORATORY(S Universal Laboratories Lab# 543
Summit Environmental Lab# 631
Georgia-Pacific Chemicals LLC Lab# 5464
Part A: Specific Monitoring Requirements
,SAMPLES COLLECTED DURING CALENDAR YEAR: 2022
(This monitoring report shall be received by the Division no later than 30 days from
the date the facility receives the sampling results from the laboratory.)
COUNTY Northampton
PHOVOO. 2-585-1232
1
(SIGNATURE OF PERMTiTEE ORDESIGNEE)
By this signature, I certify that this report is accurate
complete to the best of my knowledge
Outfall
No.
Date
Sample
Collected
50050
Total
Flow
-cresol
o-cresol
m-cresol
Cresol
Phenol
Formaldehyde
NPDES
Flow @Wier
molddlyr
MG
m l
mg/1
m II
mg/1
mg/1
mg/1
MGD
002
03/09/22
0.024
< 10
< 10
< 10
< 10
< 10
< 0.365
n/a
Form SWU-246-051100
Page 2 of 3

STORM EVENT CHARACTERISTICS: Mail Original and one copy to:
Division of Water Quality
Date: 03/09/2022 Attn: Central Files
Total Event Precipitation (inches): 0.15 1617 Mail Service Center
Event Duration (hours): 3 (only if applicable --see permit.) Raleigh, North Carolina 27699-1617
(ifnrore than one storm event was sampled)
Date
Total Event Precipitation (inches):
Event Duration (hours): (only if applicable — see permit.)
"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." y
(Signature of Permittee)
(Date
Form SWU-247, fast revised 2/2/2012
Page 3 of 3