NC0021962_Draft Permit_20210420

ROY COOPER
Governor
DIONNE DELLI-GATTI
Secretary
S. DANIEL SMITH
Director
Michael Santee, Environmental Manager
CITGO Petroleum Corporation
PO Box 58
Paw Creek, NC 28130
Dear Mr. Santee:
NORTH CAROLINA
Environmental Quality
April 20, 2021
Subject: Draft NPDES Permit NC0021962
CITGO Petroleum Corporation — Charlotte Terminal
Grade I Physical Chemical WPCS
Mecklenburg 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:
1. The facility classification Grade I Physical Chemical Water Pollution Control System (WPCS) was
added to the effluent page.
2. The limit for Toluene was removed.
3. Concurrent sampling is no longer required for annual Acute Toxicity.
4. The Acute Toxicity Monitoring Condition A. (2.) was updated for DWR For AT-1 submission
information.
5. The electronic reporting permit special condition A. (4.) was updated.
6. The permit map was updated.
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
https://bit.ly/2BZ4xxx 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 Mecklenburg 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.
NORTH CAROHNAD_E
Department of Environmental Duality
North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11617 Mail Service Center I Raleigh, North Carolina 27699-1617
919.707.9000

Mr. Santee
April 20, 2021
Page 2 of 2
If you have questions concerning the draft, please contact me at 919-707-3618, or via e-mail at
[e-mail].
Sincerely,
Derek Denard, Environmental Specialist
NPDES Compliance and Expedited Permitting
Division of Water Resources, NCDEQ
ec: CITGO Petroleum Corporation / Michael Santee [[e-mail]]; [[e-mail]]
DWR/MRO, Corey Basinger [[e-mail]]; Andrew Pitner [[e-mail]];
Wes Bell [[e-mail]]; Edward M Watson [[e-mail]]
Richard Farmer [[e-mail]]
WSS/Aquatic Toxicology Branch, Cindy Moore [[e-mail]]; Zachary T Thomas [[e-mail]]
Wastewater Operator Certification Group ([e-mail])
PWS MRO / Clinton Cook [[e-mail]]

NPDES Permit NC0021962
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
(NPDES) div
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 Control Act, as amended,
CITGO Petroleum Corporation
is hereby authorized to discharge wastewater from outfalls located at the
CITGO Petroleum — Charlotte Terminal
7600 Mount Holly Road, 4iar1otte
Mecklenburg County
to receiving waters designated as an unnamed tributary to Gum Branch [subbasin 03-08-34] within the
Catawb. -r Basin, in accordance with effluent limitations, monitoring requirements, and other
condit et forth in Part II, III and IV hereof.
This permit s ecome effects
This permit and aut . tion to d arge shall expire at midnight on June 30, 2025.
Signed this day
S. Daniel Smith, Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 8

NPDES Permit NC0021962
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 the existing Water Pollution rol Syste consisting
cont is
disposed
• waste -holding tank (servicing the truck -loading rack;offsit
• bermed areas as secondary containment for above -ground storage
tanks (ASTs), with \
• flow siphon(s) and hand -operated valv-(s) . -source discharge
located at the CITG erminal,
County, and
lly Road, Paw Creek, Mecklenburg
2. discharge from said treatment facility through Outfall 001, at a location specified on the attached
map, into an unnamed tributary to Gum Branch [stream segment 11-120-5], a waterbody
currently classified WS-IV located within subbasin 03-08-34 [HUC: 030501011403] of the
Catawba River Basin. ,
Page 2 of 8

NPDES Permit NC0021962
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
Grade I Physical Chemical Water Pollution Control System [15A NCAC 08G .0302]
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee
is authorized to discharge treated stormwater and wastewater from Outfall 001. Such discharges shall be
limited, monitored and reportedl by the Permittee as specified below:
EFFLUENT CHARACTERISTICS
[Parameter Code]
LIMITS
MONITORING REQUIREMENTS1
Monthly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location
Flow (mgd) 2
50050
Monitor & Report
Episodic
Footnote 2
Effluent
Total Suspended Solids (TSS) (mg/L)
C0530
30 mail
45 mg/L
Monthly
Grab
Effluent
Oil and Grease (mg/L)
[EPA Method 1664 SGT-HEM]
00556
Monitor & Report
Monthly
Grab
Effluent
Turbidity (ntu) 3
00070
S' Footnote 3
Monthly
Grab
Effluent
Total Recoverable Phenolics
32730
Monitor & Report
Monthly
Grab
Effluent
Benzene (µg/L)
34030
,w Monitor & Report
Monthly
Grab
Effluent
Toluene (µg/L)
34010
Monitor & Report
Monthly
Grab
Effluent
Ethyl Benzene (µg/L)
34371
Monitor & Report
Monthly
Grab
Effluent
Xylene (µg/L)
81551
Monitor & Report
onthly
Grab
Effluent
Naphthalene (µg/L)
34696
Monitor & Reporter
hly
Grab
Effluent
MTBE (µg/L) -Z2417
Monitor & Report
Monthly
Grab
Effluent
EPA Method 625 [semi-volatiles]
76028
Monitor & Report
Semi-annually
Grab
Effluent
Acute Toxicity 4
TAE6C
See Footnote 5
Annually
Grab
Effluent
Footnotes
1. ThOermittee shall submit Discharge Monitoring Reports electronically using NC DWR's eDMR application
system. See Condition A. (4.).
2. Flow s e monitored wit ch discharge event — During periods of no flow, the Permittee shall submit a
signed, m Discharge M itoring Repo MR) indicating "No discharge." Flow may be monitored
using any o four methods:
a) measure flow continuously (via flow meter, totalizer preferred);
b) calculate flow (see Rational Equation) based on total rainfall per unit area draining to the outfall [see
A. (3.)];
c) estimate flow at 20-minulp intervals during the entire discharge event; or
d) report flow based on disarge pump logs.
3. Turbidity — Effluent shall noiTause receiving stream turbidity to exceed 50 NTU. If receiving -stream
background exceeds 50 NTU, the effluent shall not increase background levels. Non-compliance with this
Standard may require additional stream monitoring and a Turbidity Corrective Action Plan (TCAP).
4. Whole Effluent Toxicity (WET) - Acute Toxicity (Fathead Minnow, 24-hour), Annual [see section A. (2.)].
Conditions:
• There shall be no discharge of floating solids or foam visible in other than trace amounts.
• The Permittee shall discharge no tank solids, tank bottom water, or the rag layer.
• Following hydrostatic tank or pipe testing, the Permittee shall discharge no wastes containing benzene
concentrations greater than 1.19 µg/L, or toluene concentrations greater than 11 pig/L.
Page 3 of 8

NPDES Permit NC0021962
A. (2.) ACUTE TOXICITY MONITORING (ANNUAL)
[15A NCAC 02B .0500 et seq.]
The permittee shall conduct acute toxicity tests on an annual basis using protocols defined as definitive
in EPA Document EPA-821-R-02-012 entitled "Methods for Measuring the Acute Toxicity of Effluents
and Receiving Waters 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 during representative effluent discharge shall be performed at the
NPDES permitted final effluent discharge below all waste trea ocesses.
The parameter code for Pimephales promelas 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 performed, using the appropriate parameter code. Additionally, DWR Form AT-1 (original) is to be
sent to the following address:
North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Viiih, NC 27699
Or, results can be sent to the email, ATForms.AT : ncdenr.
w
Completed Aquatic Toxicity Test Forms shall be filed with the Wa iences Section no later than 30
days after the end of the reporting eriod for which the report is made.
Test data shall be complete and acc ate and inc ude all supporting chemical/physical measurements
Ad
performed in association with the toxicity tests, as \veil 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.
-4 r
Shoul est data from either these monitoring requirements or tests performed by the North Carolina
Divisio ater Resources indicate potential impacts to the receiving stream, this permit may be re-
opened and modified to include alternate monitoring requirements or limits
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival and a propriate environmental controls, shall constitute an invalid test and will
require immediate foi +up testing to be completed no later than the last day of the month following
the month of the initial monitoring.
Page 4 of 8

NPDES Permit NC0021962
A. (3.) FLOW MEASUREMENT RATIONAL [G.S. 143-215.1(b)]
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 f SI units
C = dimensionless runoff coefficient for the waters d, loosely defined
as the ratio of runoff to rainfall
I = intensity of rainfall taken from the intensity -duration -frequency
curves for the specified design return period at the time of
concentration, tc (in/h or mm/h). tc = time of concentration (time
after the beginning of rainfalkxcess when all portions of the
drainage basin are contributinimultaneously to flow at the
outlet).
A = area of tributary watershed (acres or km2)
The rational equation is used td calculate the runoff from a region, given:
• the runoff coefficient which accouhts for infiltratii n and other
potential losses in the region,
• the rainfall intensity to the region,
• the time it takes fo runoff tolikvelIrom the regions upper reaches
to its outlet, and tl egion's drainage area.
Page 5 of 8

NPDES Permit NC0021962
A. (4.) ELECTRONIC REPORTING OF DISCHARGE MONITORING
REPORTS [G.S. 143-215.1(b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and program
reports. The final NPDES Electronic Reporting Rule was adopted and became effective on December
21, 2015.
NOTE: This special condition supplements or supersedes the following sections within Part II of this
permit (Standard Conditions for NPDES 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. ) and Section E. (5.) (a)j
The permittee shall report discharge monitoring data electronically using the NNR's Electronic
Discharge Monitoring Report (eDMR) inte t application.
iou
Monitoring results obtained during the m onth(s) shall be summarized for each month and
submitted electronically using eDMR. Tie eDMR system allows permitted facilities to enter
monitoring data and submit DMRs electronically using the internet. The eDMR system may be
accessed at: https:4deq.nc.gov/about/divisions/water-resources/edmr.
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
following address:
NC DEQ/ Division of Water' Resources ater QualityPermittingSection
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1 17
See "How to Request a Waiver from Electronic Reporting" section below.
Regardless of the submission method, the first DMR is due on the last day of the month following
the issuance of the permit or in the case of a new facility, on the last day of the month following the
commencement of discharge.
Starting on December 21, 2025, the permittee must electronically report the following compliance
monitoring data and reports, when applicable:
• Sewer Overflow/Bypass Event Reports;
• Pretreatment Program Annual Reports; and
Page 6 of 8

NPDES Permit NC0021962
• Clean Water Act (CWA) Section 316(b) Annual Reports.
The permittee may seek an electronic reporting waiver from the Division (see "How to Request a
Waiver from Electronic Reporting" section below).
2. Electronic Submissions
In accordance with 40 CFR 122.41(1)(9), the permittee must identify the initial recipient at the time
of each electronic submission. The permittee should use the EPA's website resources to identify the
initial recipient for the electronic submission.
Initial recipient of electronic NPDES information fromIII
DES -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)].
Vik
EPA plans to establish a website that will also link to the appro riate electronic reporting tool for
each type of electronic submission and for each state st on how to access and use the
appropriate electronic reporting to will be available s well. formation on EPA'ONPDES
Electronic Reporting Rule is foundat: https://www.federalregister.gov/documents/2015/10/22/2015-
24954/national-pollutant-discharge-elkmination-system-npdes-electronic-reporting-rule
Electronic submissions must start by the dates listed in the "Reporting Requirements" section above.
3. How to Reque iver Electronic Reporting
The permittee may ee a temporary electronic reporting waiverTrom 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 Dj ,ision 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 . application for a temporary electronic reporting waiver are found on
the following web page:
http://deq.nc.gov/about/divisions/water-resources/edmr
4. Signatory Requirements [Supplements Section B. (11.) (b) and Supersedes Section B. (11.) (d)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II,
Section B. (11.)(a) or by a duly authorized representative of that person as described in Part II,
Section B. (11.)(b). A person, and not a position, must be delegated signatory authority for eDMR
reporting purposes.
Page 7 of 8

NPDES Permit NC0021962
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user
account and login credentials to access the eDMR system. For more information on North
Carolina's eDMR system, registering for eDMR and obtaining an eDMR user account, please visit
the following web page:
http://deq.nc.gov/about/divisions/water-resources/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make
the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION
WILL BE ACCEPTED:
"I certify, under penalty of law, that this document and,0 attachments were prepared under my
direction or supervision in accordance with a systleigned to assure that qualified personnel
properly gather and evaluate the information sr�b. 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 sibmitting falsejnformation, including the
possibility of fines and imprisonment or knowing v1o� Lions. "
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.his period m be extended by request of the Director at any time [40 CFR
122.41].
Page 8 of 8

UT to Gum Branch
[flows north]
M
CITGO Petroleum Corporation
Charlotte Terminal
7600 Mount Holly Road, Charlotte 28214
Receiving Stream: UT to Gum Branch Stream Class: WS-IV
Stream Segment: 11-120-5 Sub -Basin: 03-08-34
Drainage Basin: Catawba HUC: 030501011403
Latitude: 35° 16' 52" Longitude: 80° 56' 02"
State Grid/USGS Quad: Mount Island Lake, NC
Gum Branch
[flows northwest]
Mount Holly Rd
Old Mount Holly Rd
Approximate
Facility Boundary
f- •
-
Ch
Dunham Mr0. 1
- 7 •.• ••4 �~ ��•-'• ` ( • •"-C
Cpnght©2013NNationaI Geograpl �c Society i-cubed.
�
I North
Scale 1:24,000
NPDES Permit NC0021962
Mecklenburg County