NC0021954_Draft Permit_20240917

ROY COOPER
Governor
ELIZABETH S. BISER
Secretary
RICHARD E. ROGERS, JR.
Director
CITGO Petroleum Corporation
Attn: Hal Hardison
4095 Buffalo Rd
Selma, NC 27576
Dear Permittee,
NORTH CAROLINA
Environmental Quality
9/ 17/2024
Subject: Draft NPDES Permit NCO021954
CITGO Selma Terminal
Grade PCNC
Johnston County
The Division has reviewed your request to renew the subject permit. Please review this draft carefully to ensure a
thorough understanding of the information, conditions, and requirements it contains.
The draft permit includes the following significant changes from the existing permit:
• Section A. (4.) has been updated to require electronic submission of
effluent data reports (DMRs). Federal regulations require electronic
submittal of all discharge monitoring.
• Monitoring for Turbidity was removed per NC Rule, turbidity
monitoring is only required if the receiving stream is listed as impaired
for turbidity.
• Monitoring for 624/625 in A.(1.), A.(2.), and special condition were
removed.
• Relaxed Tox Test frequency was removed per NC Rule, annual testing
was changed back to quarterly and there is no longer an option to relax
back to annual testing.
• A monthly average limit of 30.0 mg/L was added for TSS in section
A.(1.).
• Updated parameter code for Oil and Grease in section A.(1.).
The NPDES standard conditions (Parts II, III, and IV) that are a part of the permit are not included in this draft
document (cover, map, and Part I). The conditions are the same as in your current permit except that agency and
division names have been updated. The latest version is available at ht1ps://bit.1y/3k5NFaL and can be viewed
online or downloaded as a PDF file.
With this notification, the Division will solicit public comment on this draft permit by publishing a notice in
newspapers having circulation in the general Johnston County area, per EPA requirements. Please provide your
comments, if any, to me at the address below no later than 30 days after receiving this draft permit.
Following the 30-day public comment period, the Division will review all pertinent comments and take
appropriate action prior to issuing a final permit. If you have questions concerning the draft, please contact me at
[phone] or via e-mail at [e-mail].
D � ��� North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 1 1617 Mail Service Center I Raleigh, North Carolina 27699-1617
�w 919.707.9000

Sincerely,
Catherine Shadwell
NPDES Compliance and Expedited Permitting
cc: NPDES File [Laserfiche]
Raleigh Regional Office [Laserfiche]

Permit NCO021954
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE STORMWATER/WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
(NEDES)
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Contrcict, as amended,
CITGO Petroleum
is hereby authorized to discharge stormwater/ tewa from an Mtfall located at the
CITGO Selma Terminal
4095 Buffalo a
Johnston .Coun y
to receiving waters designated as aiilCinnamed tributa of Mill Creek within the Neuse River Basin in
accordance with effluent limit * s, oring requirements, and other conditions set forth in Parts I,
II, III and IV hereof.
This permit shall become
This permit and authorization to Xcharge shall expire at midnight on March 31, 2028.
Signed this day
John E. Hennessy, Section Chief Regional Operations
By Authority of the Environmental Management Commission
Page 1 of 7

Permit NCO021954
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked, and as of this issuance, any previously issued permit bearing this number is no longer effective.
Therefore, the exclusive authority to operate and discharge from this facility arises under the permit
conditions, requirements, terms, and provisions described herein.
CITGO Petroleum Corporation
is hereby authorized to:
1. continue to operate a Surface -Water Pollution Control Systemto manage stormwater in
proximity to above -ground storage tanks (ASTs) and appurtenant piping containing fuel
hydrocarbons in excess of one (1) million gallons; to urge wash -down water and similar
wastewaters from truck -loading racks containing ani ensing petroleum fuels, that includes
the following components:
2
• an equalizations tank (21,000 gals); recla roleum offsite
• secondary containment area (AST berm)
• discharge line and control valve rate , rurally closed)
• sample point
located at the Cl'
ffalo Rd, Selma) in Johnston County, and
discharge from said trea3Wworks via Outfall 001, located on the attached map, to an
unnamed tributary (UT) to ill Creek [Stream Segment 27-40], a waterbody currently
classified WS-IV; NSW within Subbasin 03-04-02 [HUC: 030202011105] of the Neuse
River Basin.
Page 2 of 7

Permit NCO021954
Part I
A. (L) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
[15A NCAC 08G .0302] Physical Chemical WPCS PCNC
Beginning upon the effective date and lasting until permit expiration, the Permittee is authorized to
discharge treated wastewater/stormwater from Outfall 001. Such discharges shall be limited and
monitored 1 by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
(Parameter Codes)
LIMITS
MONITORING
REQUIREMENTS 1
Monthly
Average
Daily
Maximum
Measureme
nt
Frequency
Sample
Type
Sample
Location
Flow'
50050
MonitoMGDr and Report
pisodic
Footnote 2
Effluent
Total Suspended Solids
C0530
30.0 m /L 1 45.0 m
Monthl
Grab
Effluent
Oil & Grease [US EPA Method
1664 SGT-HEM
00552
Monitor and Repo g/L)
thly
Grab
Effluent
Benzene 3
34030
Monitor and Re ort ( /L)
Mo y
Grab
Effluent
Toluene 3
34010
Monitor and lfe ort /L
Monthly
Grab
Effluent
Eth lbenzene 3
34371
Monitor and Report /L
Monthly
Grab
Effluent
X lene 3
81551
Monitor and Report /L
Monthly
Grab
Effluent
Naphthalene 3
34696
Monitor and Report
Monthly
Grab
Effluent
Total Recoverable Phenolics 3
32730
Monitor nd Report /L
Monthly
Grab
Effluent
MTBE 3
22417
Monitor d Report /LQuarterly
Grab
Effluent
Acute WET Testing4
TAE66
Monitor and Report
Quarterly
Grab
Effluent
Footnotes:
1. The Permittee shalleitdischarge n*itoring reports electronically using the NC
DWR's eDMR sy [see A. (4.)]
2. Flow — If no flow oc within a gven month, the Permittee shall submit a monthly
Discharge Monitoring rt (DM )indicating "No flow" or "No Discharge." Flow shall be
monitored with each dischar*�e event and may be monitored in one of four ways:
a. measure flow Conti I ously;
b. Rational Method -- calculate flow based on total rainfall per unit area,
including built -on area draining to the outfall;
c. estimate flow at 20-minute intervals during the entire discharge event; or
d. report flow based on discharge pump logs.
3. Samples to be collected concurrently with WET -Test sampling.
4. Acute Toxicity (Pimephales promelas) 24-hr Static Test, performed on a discharge event during
each quarter [see A. (3.)]
Conditions:
1. The Permittee shall discharge no floating solids or foam visible in other than trace amounts.
2. The Permittee shall discharge no tank solids, tank bottom water, or tank rag layer.
3. Following hydrostatic tank testing, the Permittee shall discharge no tank (or pipe) contents with
concentrations of benzene exceeding 1.19 µg/L or toluene greater than 11 µg/L.
Page 3 of 7

Permit NCO021954
A. (2.) RATIONAL EQUATION - FOR CALCULATING FLOW
[G. S. 143-215.3 (a)(2)]
The Rational Equation is one method for calculating runoff; find references and information in DWR's
Stormwater BMP Manual, Chapter 3, "Stormwater Calculations," by addressing the following website:
htlps://www.dcq.nc. gov/water-quality/surface-water-protection/spu/spu-bmp-manual-
documents/bmpman-ch03 -swcalcs-20090616-dwq-spu/download
The Rational Equation:
Q=KuCIA
where:
Q = flow (peak flow rate (cfs or m3/sec).
Ku = units conversation factor = 1.008 for U.S. standard units (usually ignored because it
is so close to 1), or 0.278 for SI units.
C = dimensionless runoff coefficient for the waters , loosely defined as the ratio of
runoff to rainfall.
I = intensity of rainfall taken from the intensii uratio quency curves for the
specified design return period at the time oiJ ncentration, in/h or mm/h). tc = time of
concentration (time after the beginning of rainfa�xcess wh all portions of the
drainage basin are contributing simultaneously flow at the outlet).
A = area of tributary watershed (ayres or km2)
The rational equation is used to calculate the
• runoff coefficient which accou for inf
• rainfall intensity to the regio
• time it takes for runoff to travel from the
• region's drainage area %
A. (3.) ACUTE TOXI
[15A NCAC 02B.05
given:
and other potential losses in the region,
;hes to its outlet, and
RING - LIMITED (QUARTERLY)
The Permittee shall conduct Quarterly acute toxicity tests using protocols defined as definitive in E.P.A.
Document EPA/600/4-90/027 entitled "Methods for Measuring the Acute Toxicity of Effluents to
Freshwater and Marine Organisms." The monitoring shall be performed as a Fathead Minnow
(Pimephales promelas) 24-hour static test. Effluent samples for self -monitoring purposes must be
obtained below all waste treatment. The tests will be performed on a discharge event during each quarter
(January -March, April -June, July -September, October -December).
Should there be no discharge [no flow] from the facility during a quarter in which toxicity monitoring is
required, the Permittee will complete the information located at the top of the aquatic toxicity (AT) test
form indicating the facility name, permit number, pipe number, county, and the month/year of the report
with the notation of "No Flow" in the comment area of the form. The report shall be submitted to the
Environmental Sciences Section at the address cited below.
The parameter code for this test is TAE6C. All toxicity testing results required as part of this permit
condition will be entered on the Effluent Discharge Form (MR-1) for the month in which it was
Page 4 of 7

Permit NCO021954
performed, using the appropriate parameter code. Additionally, DWR Form AT-1 (original) is to be sent
to the following address:
Attention: North Carolina Division of Water Resources
Environmental Sciences Section
1621 Mail Service Center
Raleigh, N.C. 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section no later
than 30 days after the end of the reporting period for which the report is made.
Test data shall be complete and accurate and include all supporting chemical/physical measurements
performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine
of the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of
the waste stream.
Should any test data from either these monitoring requirements or is performed by the North Carolina
Division of Water Resources indicate potential impacts to the ripMng stream, this permit may be re-
opened and modified to include alternate monitoring requis or limits
NOTE: Failure to achieve test conditions as specified i �tfehecit documen , such as minimum control
organism survival and appropriate environmental contr�ls, sha onstitute an invalid test and will
require immediate follow-up testing to be completed no la t an the last day of the month following
the month of the initial monitoring.OV
A (4.) ELECTRONIC REPO G - ISCI�RGE MONITORING REPORTS
[G.S. 143-215.1(b)]
Federal regulations require ctr s ttal of all discharge monitoring reports (DMRs) and program
reports. The final NPDE ctrom po Rule was adopted and became effective on December
21, 2015. 1
NOTE: This special condition supplements or supersedes the following sections within Part II of this
permit (Standard Conditions for N#PDES Permits):
• Section B. (11.) Signatory Requirements
• Section D. (2.) Reporting
• Section D. (6.) Records Retention
• Section E. (5.) Monitoring Reports
1. Reporting Requirements [Supersedes Section D. (2.) and Section E. (5.) (a)1
The permittee shall report discharge monitoring data electronically using the NC DWR's Electronic
Discharge Monitoring Report (eDMR) internet application.
Monitoring results obtained during the previous month(s) shall be summarized for each month and
submitted electronically using eDMR. The eDMR system allows permitted facilities to enter
monitoring data and submit DMRs electronically using the internet. Until such time that the state's
eDMR application is compliant with EPA's Cross -Media Electronic Reporting Regulation
(CROMERR), permittees will be required to submit all discharge monitoring data to the state
Page 5 of 7

Permit NC0021954
2.
electronically using eDMR and will be required to complete the eDMR submission by printing,
signing, and submitting one signed original and a copy of the computer printed eDMR to the
following address:
NC DEQ / Division of Water Resources / Water Quality Permitting Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility
being physically located in an area where less than 10 percent of the households have broadband
access, then a temporary waiver from the NPDES electronic reporting requirements may be granted
and discharge monitoring data may be submitted on paper DMR forms (MR 1, 1.1, 2, 3) or
alternative forms approved by the Director. Duplicate signed copies shall be submitted to the
mailing address above. See "How to Request a Waiver from Electronic Reporting" section below.
Regardless of the submissi,
the issuance of the permit c
commencement of dischar�
Starting on December 21,
monitoring data and report,
Sewer Overflow/Bypas
Pretreatment Program i
Clean Water Act (CW�
The permittee may seek an
Waiver from Electronic Re
f the month following
he month following the
following compliance
�e "How to Request a
In accordance with 40 %122.4 (9), the permittee must identify the initial recipient at the time
of each electronic submiss permittee should use the EPA's website resources to identify the
initial recipient for the electr submission.
Initial recipient of electronic NPDES information from NPDES-regulated facilities means the entity
(EPA or the state authorized by EPA to implement the NPDES program) that is the designated entity
for receiving electronic NPDES data [see 40 CFR 127.2(b)].
EPA plans to establish a website that will also link to the appropriate electronic reporting tool for
each type of electronic submission and for each state. Instructions on how to access and use the
appropriate electronic reporting tool will be available as well. Information on EPA's NPDES
Electronic Reporting Rule is found at: https://www.federalre ig ster.gov/documents/2015/10/22/2015-
24954/national-pollutant-discharge-elimination-system-npdes-electronic-reporting-rule
Electronic submissions must start by the dates listed in the "Reporting Requirements" section above.
3. How to Request a Waiver from Electronic Reporting
Page 6 of 7

Permit NC0021954
The permittee may seek a temporary electronic reporting waiver from the Division. To obtain an
electronic reporting waiver, a permittee must first submit an electronic reporting waiver request to
the Division. Requests for temporary electronic reporting waivers must be submitted in writing to
the Division for written approval at least sixty (60) days prior to the date the facility would be
required under this permit to begin submitting monitoring data and reports. The duration of a
temporary waiver shall not exceed 5 years and shall thereupon expire. At such time, monitoring data
and reports shall be submitted electronically to the Division unless the permittee re -applies for and is
granted a new temporary electronic reporting waiver by the Division. Approved electronic reporting
waivers are not transferrable. Only permittees with an approved reporting waiver request may
submit monitoring data and reports on paper to the Division for the period that the approved
reporting waiver request is effective.
Information on eDMR and the application for a temporary electronic reporting waiver are found on
the following web page:
http://deq.nc.gov/about/divisions/water-resources/edmr
4. Sianatory Requirements [Supplements Section B. (11.)LM) and Supersedes Section B. (11.
All eDMRs submitted to the permit issuing authority sill be signed byperson described in Part II,
Section B. (I 1.)(a) or by a duly authorized representative of that person as described in Part II,
Section B. (I 1.)(b). A person, and not a position, must be delegated signatory authority for eDMR
reporting purposes.
If* -
For eDMR submissions, the person signing and submitting
the DMR must obtain an eDMR user
account and login credentials to acce eDMR system. For more information on North
Carolina's eDMR system, registe fo MR and obtaining an eDMR user account, please visit
the following web page:
Certification. Any on submit ' anTlectronic DMR using the state's eDMR system shall make
the following certifica 40 CF 22.22]. NO OTHER STATEMENTS OF CERTIFICATION
WILL BE ACCEPTED:
"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. "
5. Records Retention [Supplements Section D. (6.)1
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR
submissions. These records or copies shall be maintained for a period of at least 3 years from the
date of the report. This period may be extended by request of the Director at any time [40 CFR
122.41].
Page 7 of 7

0
7• {
ram• ° �>`'7
1 _
r \
et
141
aiW
IJ• 0 1 ,�o
Sand avel d .
Outfall 001
(flows SW)
Lat: 35' 33' 09" N
B Long: 78' 18' 12" W
�r Mill Creek
11r (flows west) - -
i % u r 50
Approximate �. +� -�S '\ • 4��` i�
Facility Boundaryl -
'--
��•ndwood
s50 l .bisposal 900
West Noble Street
Buffalo Road (NCSR
o 1923
` 156
Memorial
/ i • J i Cero - L 0
CITGO Petroleum Company — Selma Terminal
4095 Buffalo Road
Sub -Basin: 03-04-02 Stream Class: WS-IV; NSW
Receiving Stream: UT of Mill Creek Stream Segment: 27-40
Drainage Basin: Neuse River Basin HUC: 030202011105
Facility
Location
not to scale
NOY'th NPDES Permit NCO021954
Johnston Coun