NC0027006_Draft Permit_20180124

Water Resources
ENVIRONMENTAL QUALITY
January 24, 2018
Timothy J. Aydt, Deputy Assistant Secretary
Marathon Petroleum Company LP
539 South Main Street
Findlay, Ohio 45840
Dear Mr. Aydt:
ROY COOPER
Governor
MICHAEL S. RAGAN
Secy elary
S. JAY ZIMMERMAN
Drrec(or
Subject: NPDES Permit - DRAFT Review
Permit NCO027006
Selma Terminal
2555 West Oak Street, Selma
Johnston County
Based on your renewal request for the subject site (received March 3, 2016), the Division of
Water Resources (DWR or the Division) hereby transmits a renewal draft for your review and
comment. Please review this draft carefully to ensure your understanding of the limits and
monitoring conditions, and to correct errors, if any.
Concurrent with this notification, the Division will solicit public comment on the draft by
publishing a notice in newspapers having circulation in the general Johnston County area, as
required by the NPDES Program. Please provide your written comments, if any, regarding this
draft to DEQ / DWR / NPDES Program no later than February 24, 2018 (approximately 30 days
after receiving this document). Your comments are welcome, but are not mandatory.
Changes to the Previous Permit. The Division understands that you have made no significant
changes to your treatment processes or facilities. We therefore have made no significant changes
to your permit for this renewal.
Records show that you have successfully registering with the Electronic Discharge Monitoring
Report (eDMR) Program. Please be reminded that until the state's eDMR application is approved
by the Department as compliant with EPA's Cross Media Electronic Reporting Regulation
(CROMERR), all permittees must continue to submit hardcopy of DMRs as backup to eDMR
reporting [see A. (2)].

Following the mandatory 30 -day public comment period, the Division will review all pertinent
comments, if any, and take appropriate action prior to issuing a final NPDES permit. If you have
questions concerning this draft, please e-mail me [e-mail]], or call my private
line [phone].
Enclosure: NPDES Permit NC0027006 (permit DRAFT)
he NPDES Program Files [draft permit and Fact Sheet]
ec ATU, Susan Meadows [draft permit and Fact Sheet]
OCU, Maureen Kinney [draft permit and Fact Sheet]
DWR/RRO, Danny Smith [draft permit and Fact Sheet]
[e-mail] [draft permit and Fact Sheet]
tg Unit

Permit NCO027006
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
(NPD -
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,
MPLX T
is hereby authorized to discharge
MPLX - Selri
2555 WV st.Oak
Jan -St -on
to receiving waters design6ted as an
in accordance with effluent lira tatic
I, II, IIIandIVhe� f��
This permit shall
This permit and
Signed this day
2018.
located at the
Selma
of Mill Creek within the Neuse River Basin
;nts, and other conditions set forth in Parts
discharge shall expire at midnight on March 31, 2023.
2018.
Linda Culpepper, Interim Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 7

Permit NCO027006
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.
MPLX Terminals LLC
is hereby authorized to:
1. continue to operate a Surface -Water Pollution Control S stem\.o manage stormwater and related
petroleum -contact water held in proximity to above- o� storage tanks (ASTs) and
appurtenant piping for the distribution of hydroc b ' fac urface bulk -storage exceeding one
(1) million gallons], the system consisting f � 77
• earthen berms [dikes] surrounding
• discharge piping draining to -an oil
• truck -loading rack contaimnt-fol
• oil/water separator (off-site re\� cl
• holding pond
• v -notch weir,
this system
tar (off-sitq�re'cycle)
(petroleum -contact water)
normally closed)
Johnston County, and therefrom;
2. discharge from said treatment works via Outfall 001, located on the attached map, into an
unnamed tributary to Mill Creek [stream segment 27-40], a waterbody currently classified
WS -IV; NSW within subbasin 03-04-02 of the Neuse River Basin.
Page 2 of 7

Permit NCO027006
Part I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15 NCAC 02B .0400 et seq., 02B .0500 et seq.]
Beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to
discharge treated stormwater from Outfa11001. Such discharges shall be limited and monitored' by the
Permittee as specified below:
EFFLUENT
CHARACTERISTICS
Parameter Codes
LIMITS
MonthlyDaily
Average Maximum
MONITORING REQUIREMENTS
Measurement Sample Sample
Frequency Type Location
Flow 2
50050
Eisodic
2
Effluent
Total Suspended Solids
C0530
45.0 mQuarterly
Grab
Effluent
Oil and grease 3
00556
-Z,,Quarterly
Grab
Effluent
Benzene 3
34030
Quarterly
Grab
Effluent
Toluene 3
34010
Quarterly
Grab
Effluent
Eth lbenzene 3
34371Quarterly
Grab
Effluent
Xylene 3
81551
Q ua erly
Grab
Effluent
Total Recoverable Phenolics 3
32730
\ \
Q! a�e ly
Grab
Effluent
Naphthalene
34696
uarterl'Grab
Effluent
00070
1 QuarterlyGrab
Effluent
-Turbidity
EPA Method 625
76028
Semi -Annually
Grab
Effluent
WET Testing 4
TAE6C
\ % Annually 4
Grab
Effluent
Footnotes:
1. No later than N cember 21;0 Yt ,the permitte liall begin submitting discharge monitoring
reports eleei`onically u�m�the�Divi ion eL�i " system [see A. (3)].
2. Flow —F o s all be monitored ii each discharge event and maybe monitored in one of
three,
`\ \
a. meas fl�w cont u; usl ;
b. estimate ow at 20- nute intervals during the entire discharge event; or
c. report flowbaseddischarge pump logs.
3. Samples to be collectX.e .concurrently with WET Test sampling.
4. Whole Effluent Toxicity (WET) Testing — Acute Annual WET testing will continue at this
frequency provided that the Permittee maintains WET test results showing "pass" [or LC50 > 100]
for each annual event." If WET -test results show "fail," the sampling frequency shall immediately
revert to Quarterly in accord with Section A. (2.), and the Permittee will not regain eligibility for
Annual testing frequency except after five (5) consecutive quarters showing "Pass."
Conditions
1. The Permittee shall discharge no floating solids or foam.
2. The Permittee shall not discharge tank solids, tank bottom water, or the tank rag layer.
3. Following hydrostatic tank testing, the Permittee shall discharge no tank (or pipe) contents with
concentrations of benzene > 1.19 µg2 or toluene > 11 gg/L.
Page 3 of 7

Permit NCO027006
A. (2.) ACUTE TOXICITY MONITORING - LIMITED (ANNUAL)
[15A NCAC 02B .0500 et seq.]
ACUTE TOXICITY MONITORING (EPISODIC)
Petroleum Bulk Storage
The Permittee shall conduct quarterly acute toxicity tests [except when relaxed to Annual monitoringl
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), except when relaxed to .Annual monitoring,
Should there be no discharge of flow from the facility during a in which toxicity monitoring is
required, the Permittee will complete the information located t e to of the aquatic toxicity (AT) test
form indicating the facility name, permit number, pipe n r, ty, and the month/year of the report
with the notation of "No Flow" in the comment area o ed a eport shall be submitted to the
Environmental Sciences Section at the address cit elow.
The parameter code for this test is TAE6C. All toxicity` g sults requi d as part of this permit
condition will be entered on the EffluentD` s�harge Form MR -1) for the month in which it was
performed, using the appropriate parameter . ddition I DWR Form AT -1 (original) is to be sent
to the following address: ���
North\CGarolinapivision of Water Resources
Enviroiftnental Sciences Section
X1,6211, Mai Service Center
_,Rales , N.C. 27699-1621
Completed Aquatic\-Takcicity Tek Form, all be filed with the Environmental Sciences Section no later
than 30 days after then of the eportmg period for which the report is made.
Test data shall be complete andiadccurate and include all supporting chemical/physical measurements
performed in association w 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 tests performed by the North Carolina
Division of Water 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 appropriate environmental controls, shall constitute an invalid test and will
require immediate follow-up testing to be completed no later than the last day of the month following
the month of the initial monitoring.
Page 4 of 7

Permit NCO027006
A. (3) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
[NCGS 143-215.1 (b)]
Federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and program
reports and specify that, if a state does not establish a system to receive such submittals, then permittees
must submit monitoring data and reports electronically to the Environmental Protection Agency (EPA).
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):
1.
• Section B. (11.)
• Section D. (2.)
• Section D. (6.)
• Section E. (5.)
Signatory Requirements
Reporting
Records Retention
Monitoring Reports
Effective December 21, 2016, the permittee shall
using the NC DWR's Electronic Discharge M9r1
Monitoring results obtained during then
submitted electronically using eDMR.
monitoring data and submit DMRs elect
eDMR application is compliant with EP.
(CROMERR), permittees 1 be r�equin
electronically using eD R and�ill be r
signing, and submitting on9igne rigi
following address��� v��
NC DENRV-iv s on of WVe Redi
ATTENTION: gentral Fill
1617 Mail Service\��qter I
Raleigh, North Caro lin'a`276Y9-1617
toring data electronically
internet application.
fall be summa`r`ized for each month and
eDMR s3kfixn allows permitted facilities to enter
dally usine th bintemet. Until such time that the state's
Cres edia�l "onic Reporting Regulation
i`su mit\ilischje
ge monitoring data to the state
i d to comp%te eDMR submission by printing,
atl a copy of theomputer printed eDMR to the
/ Water Quality Permitting Section
If a permittee is unable feuse 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 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, 2020, the permittee must electronically report the following compliance
monitoring data and reports, when applicable:
Page 5 of 7

Permit NC0027006
Sewer Overflow/Bypass Event Reports;
Pretreatment Program Annual Reports; and
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
3.
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 from
(EPA or the state authorized by EPA to implement the
for receiving electronic NPDES data [see 40 CFR 1,�7s:
EPA plans to establish a website that will als&14\to
each type of electronic submission and for each st t
appropriate electronic reporting tool will -be available
Electronic Reporting Rule is found at: htt:l/www2.e
discharLye-elimination-system-nudes-elec onie,r ori
V�
Electronic submissions<4uststa b the date.. listed i
I facilities means the entity
that is the designated entity
to OoWto
onic reporting tool for
onaccess and use the
rml�on on EPA's NPDES
"Reporting Requirements" section above.
The permittee`giay seek a t apo 'electronic reporting waiver from the Division. To obtain an
electronic reporting waiver, permi ee must first submit an electronic reporting waiver request to
the Division. Requests for t � i orary electronic reporting waivers must be submitted in writing to
the Division for writt�n�� azp al 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://dN.nc.gov/about/divisions/water-resources/edmr
Page 6of7

Permit NC0027006
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.
5.
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:
httv://deg.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 STA-TkMENTS OF CERTIFICATION
WILL BE ACCEPTED: Z
7 certify, under penalty of law, that this documen
direction or supervision in accordance with a s
properly gather and evaluate the information subj
persons who manage the system, or those persons
the information submitted is, to the beAx in kno
am aware that there are significant penal`' ''es ( s
possibility offines and imprisonment forowing
I attachments were prepared under my
fined to assure that qualified personnel
3ased on n yineiry of the person or
responsiblefor gathering the information,
and belief, tr` uue, accurate, and complete. I
g false information, including the
The permittee shall retain`rec'rds lof all Discharge Monitoring Reports, including eDMR
submissions. These r`ecords\or copies -shall beQntained for a period of at least 3 years from the
date of the report This nod may be ex nded by request of the Director at any time [40 CFR
122.41]. 11 � \ \ \ \
Page 7 of 7

MPLX Terminals LLC
Selma Terminal
USGS Ouad: Selma, NC Sub -Basin:
03-04-02
Permitted Flow: Episodic -- not limited Stream Class:
WS -IV; NSW
Receivine Stream: UT of Mill Creek Stream Seement:
27-40
Drainaae Basin: Neuse River Basin HUC:
03020201
Facility
Location
not to scale
North NPDES Permit NCO027006
Johnston Coun