NC0046213_Permit Issuance_20150727

A4 *Q
NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
Mr. T. J. Aydt, Deputy Assistant Secretary
Marathon Petroleum Company LP
539 South Main Street
Findlay, OH 45840-3229
Dear Mr. Aydt:
Donald R. van der Vaart
Secretary
July 27, 2015
Subject: Issuance of NPDES Permit NCO046213
Marathon Petroleum Company LP -
Charlotte Terminal
8035 Mount Holly Road, Charlotte 28214
Mecklenburg County
The Division of Water Resources (the Division) hereby issues the attached NPDES permit for the subject
facility. This permit is issued pursuant to the requirements of North Carolina General Statute 143-215.1
and the Memorandum of Agreement between North Carolina and the U.S. Environmental Protection
Agency dated October 15, 2007, or as subsequently amended.
The Division understands that you have made no significant changes to your facility the last permit
renewal. We have made the following updates to your previous permit:
• added updates to facility map, outfall locations and parameter codes
• monitoring for Benzene, Phenol, Oil & Grease is monthly
• added Monthly Average Limit of 30.0 mg/L for Total Suspended Solids (TSS)
• for Oil & Grease, please note that [00556] remains the same for submitting DMWeDMR, but use
test EPA method 1664 (SGT-HEM) with results in mg/L
• replaced Phenol (single compound) [34694] with Total Recoverable Phenolics [32730]
• Acute Toxicity failure requires quarterly monitoring.
Proposed federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and
specify that, if a state does not establish a system to receive such submittals, then permittees must submit
DMRs electronically to the Environmental Protection Agency (EPA). The Division anticipates that these
regulations will be adopted and is beginning implementation.
The requirement to begin reporting discharge monitoring data electronically using the NC DWR's
Electronic Discharge Monitoring Report (eDMR) internet application has been added to your NPDES
permit. [See Special Condition A. (4.)] For information on eDMR, registering for eDMR and obtaining
an eDMR user account, please visit the following web page:
http://portal.ncdenr.org/web/wq/admin/bog/ipu/edmr.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] Fax: [phone]/Customer Service:1-877-623-6748
Internet:: www.ncwatecom
An Equal opporturtiWAffirma6ve Action Employer

Mr. Aydt
July 27, 20IS
Page 2 of 2
For information on EPA's proposed NPDES Electronic Reporting Rule, please visit the following web
site:
http://www2.epa.gov/compliance/proposed-npdes-electronic-reporting-rule.
If any parts, measurement frequencies, or sampling requirements contained in this permit are
unacceptable, you have the right to an adjudicatory hearing, upon written request submitted within thirty
(30) days after receiving this letter. Your request must take the form of a written petition conforming to
Chapter 150B of North Carolina General Statutes, and you must file it with the Office of Administrative
Hearings, 6714 Mail Service Center, Raleigh, North Carolina 27699-6714. Unless such a demand is
made, this permit shall remain final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division may
require modification or revocation and reissuance of the permit. This permit does not affect the legal
requirements to obtain other permits which may be required by the Division of Water Resources or any
other Federal, State, or Local governmental permits that may be required.
If you have questions, or if we can be of further service, please contact Derek Denard at
[[e-mail]] or call [phone].
*JayZinmmer6man,
ctin IT • r
Division of Water Resources, NCDENR
Enclosure: NPDES Permit NC0046213 (Issuance Final)
he: Central Files
NPDES Program Files
MRO Files/ Attn: Michael Parker
ec: Richard Farmer [[e-mail]]
Aquatic Toxicology Unit/ Susan Meadows [[e-mail]]
Greg Moore, Marathon Petroleum Company LP [[e-mail]]
Thomas G. Leigh, Marathon Petroleum Company LP [[e-mail]]
h

ts.
Permit NCO046213
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
PDES)
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,
Marathon Petroleum Company, LP
is hereby authorized to discharge wastewater from outfalls located at the
Marathon Petroleum Company, LP
Charlotte NC Terminal
8035 Mount Holly Road, Charlotte 28214
Mecklenburg County
to receiving waters designated as an unnamed tributary to Long Creek, subbasin 03-08-34 within the
Catawba River Basin, in accordance with effluent limitations, monitoring requirements, and other
conditions set forth in Parts I, II, III and IV hereof.
This permit shall become effective September 1, 2015.
This permit and authorization to discharge shall expire at midnight on June 30, 2020.
Signed this day July 27, 2015.
S. J"immerman. Director
DiNision of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 7

Permit NCO046213 C
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked. As of this permit 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 included herein.
Marathon Petroleum Company, LP
is hereby authorized to:
1. continue to operate a Surface -Water Pollution Prevention Plan for stormwater in proximity to above-
ground storage tanks (ASTs), surface bulk -storage of ethanol and petroleum hydrocarbon fuels in
excess of one million gallons, and fuel -truck loading racks, utilizing
• oil -water separator (10,000-gal)
• two (2) holding tanks (10,000-gal each)
• bermed secondary containment for ASTs
• final holding pond (currently 160,000 gallons) with hand -operated discharge
valve (normally closed)
located at the Marathon Petroleum Company, LP, Charlotte NC Terminal, 8035 Mount Holly Road,
Charlotte, Mecklenburg County, and
2. discharge from said treatment facility via Outfall 001, at a location specified on the attached map,
into an unnamed tributary (UT) of Long Creek [stream segment 11-120-(2.5)], a waterbody currently
classified as WS-IV waters within subbasin 03-08-34 [HUC: 03050101] of the Catawba River
Basin.
Page 2 of 7

Permit NCO046213
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 et seq.]
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 reported'
by the Permittee as specified below:
EFFLUENT CRACTERISTCS
[Par '
am r Code
' - LllYIITS `
M0IITQRIlV'G' REQUIREMENTS
n
Monthly_°
Avera a
` y
D , I
.'.. h
NTa� nuim
r
''
1Vleasurement'
..-�
e
SAmpleY
e
5am
Coca on :
50050 Flow 2 (MGD)
Episodic
2
Effluent
C0530] Total Suspended Solids (m )
30.0 m
45.0 m
Monthly
Grab
Effluent
[000701 Turbidity 3 (N
50 NTU
Monthly
Grab
Effluent
[00556] Oil and Grease (mg/L)
EPA Method 1664 SGT-HEM]
Monthly
Grab
Effluent
[32730] Total Recoverable
Phenolics 4 (µ )
Monthly
Grab
Effluent
34030] Benzene 4
Monthly
Grab
Effluent
[34010 Toluene 4 (
Quarterly
Grab
Effluent
34371] Ethyl Benzene 4(gg/L)
Quarterly
Grab
Effluent
81551 Xylene 4
Quarterly
Grab
Effluent
34696] Naphthalene 4 }
Quarterly
Grab
Effluent
22417] MTBE 4 qtgpQuarterly
Grab
Effluent
[TAE6C] Acute Toxicity 5
Quarterly
Grab
Effluent
Footnotes:
1. No later than 270 days from the effective date of this permit, the permittee shall begin submitting discharge monitoring
reports electronically using the Division's eDMR application system [see A. (4.)].
2. Flow shall be monitored with each discharge event — During periods of no flow, the Permittee
shall submit a signed, monthly Discharge Monitoring Report (DMR) indicating "No discharge." Flow
may be monitored using any one of 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-minute intervals during the entire discharge event; or
d) report flow based on discharge pump logs.
3. Turbidity — Effluent shall not cause 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. This sample to be collected concurrently with Acute Toxicity.
5. Acute Toxicity (Fathead Minnow, 24-hour), Quarterly during January, April, July and October [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 µg/L.
Page 3 of 7

Permit NCO046213
A. (2.) ACUTE TOXICITY PASS/FAIL MONITORING (QUARTERLY)
[15A NCAC 02B .0500 et seq.]
The Permittee shall conduct acute toxicity tests on a ucuaarterly basis [except as relaxed to Annual] using protocols
defined in the North Carolina Procedure Document entitled "Pass/Fail Methodology For Determining Acute
Toxicity In A Single Effluent Concentration" (Revised -December 2010 or subsequent versions). The monitoring
shall be performed as a Fathead Minnow (Pimephales promelas) 24 hour static test. The effluent concentration
at which there may be at no time significant acute mortality is 90% (defined as treatment two in the procedure
document). The tests will be performed during the months of January, April, July and October [except as
relaxed to Annual]. These months signify the first month of each three month toxicity testing quarter assigned
to the facility. Effluent sampling for this testing must be obtained during representative effluent discharge and
shall be performed at the NPDES permitted final effluent discharge below all treatment processes.
The parameter code for Pimephales promelas is TGE6C. 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-2 (original) is to be sent to the
following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1623 Mail Service Center
Raleigh, North Carolina 27699-1623
Completed Aquatic Toxicity Test Forms shall be filed with the Water 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 there be no discharge of flow from the facility during any month, 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 Water Sciences Section at the address cited above..
Should the Permittee fail to monitor during a month in which toxicity monitoring is required, then monthly
monitoring will begin immediately. Upon submission of a valid test, this monthly test requirement will revert to
quarterly in the months specified above
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 NCO046213
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 for SI units
C = dimensionless runoff coefficient for the watershed, 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 beginning rainfall excess when all portions of the drainage
basin are contributing simultaneously to outlet flow).
A = area of tributary watershed (acres or km2)
The rational equation is used to calculate the runoff from a region, given:
• the runoff coefficient (accounts for infiltration losses in the region),
• the rainfall intensity to the region,
• the time for runoff to travel from the region's upper reaches to its
outlet, and
• the region's drainage area.
Page 5 of 7

Permit NCO046213
A. (4.) ELECTRONIC REPORTING OF DISCHARGE MONITORING
REPORTS [G. S . 143-215.1(b)]
Proposed federal regulations require electronic submittal of all discharge monitoring reports (DMRs)
and specify that, if a state does not establish a system to receive such submittals, then permittees must
submit DMRs electronically to the Environmental Protection Agency (EPA). The Division anticipates
that these regulations will be adopted and is beginning implementation in late 2013.
NOTE: This special condition supplements or supersedes the following sections within Part II of this
permit (Standard Conditions for NPDES Permits):
• Section B. (11.)
• Section D. (2.)
• Section D. (6.)
• Section E. (5.)
Signatory Requirements
Reporting
Records Retention
Monitoring Reports
1. Reporting [Supersedes Section D. (2.) and Section E. (5.) (a)1
Beginning no later than 270 days from the effective date of this permit, the permittee shall begin
reporting 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
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 DENR / DWR / Information Processing Unit
ATTENTION: Central Files / eDMR
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.
Requests for temporary waivers from the NPDES electronic reporting requirements 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 using eDMR. Temporary waivers shall be valid
for twelve (12) months and shall thereupon expire. At such time, DMRs shall be submitted
Page 6 of 7

Permit NCO046213
electronically to the Division unless the permittee re -applies for and is granted a new temporary
waiver by the Division.
Information on eDMR and application for a temporary waiver from the NPDES electronic reporting
requirements is found on the following web page:
http://i)ortal.ncdenr.or web/wq/admin/bog/ipu/edmr
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.
2. Signatory Requirements [Supplements Section B. (11.) (b) and supersedes Section B. (11.) (d)]
All eDMRs submitted to the permit issuing authority shall be signed by a person 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. (11.)(b). A person, and not a position, must be delegated signatory authority for eDMR
reporting purposes.
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:
bitp://i)ortal.ncdenr.org/web/WQ/admin/boiz/ipu/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:
7 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. "
3. Records Retention [Supplements Section D. (6.)]
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

_ T
Long Creek =
[flows southwest] h _
•U �,�1 � � ram-: ✓ i
UT to Long Creek y✓ I
[flows northwest] 2 1
Mount Holly Rd x Outfall 001
[flows west]
Approximate '
Facility Boundary
1� ' i �' l - ' /l � Co yrighle© 201 �N.tional Geegrap is Soaely9i:cubetl
Marathon Petroleum Company, LP
Charlotte Terminal
8035 Mount Holly Road, Charlotte 28214
Facility f
Location
Scale 1:24,000
Receiving Stream: UT to Long Creek Stream Class: WS-IV
Stream Segment: 11-I20-(2.5) Sub -Basin: 03-08-34
Drainage Basin: Catawba HUC: 030501011403
Latitude: 36'16'50" Loneitude: 80056'38"
State Grid/USGS Ouad: F15SW/ Mount Island Lake, NC
J
N�jnth
DES Permit NCO046213
Mecklenburg County
r

DENR / DWR / NPDES
EXPEDITED FACT SHEET - NPDES PERMIT DEVELOPMENT
NPDES Permit NCO046213
Derek Denard, Compliance & Expedited Permitting Unit / 919-807-6307 08Jun2015
Facility Information
Applicant/Facility Name
Marathon Petroleum Company LP — Charlotte Terminal
Applicant Address
539 South Main Street, Findlay, OH 45840-3229
Facility Address
8035 Mount Holly Street, Charlotte, NC 28214
Permitted Flow (MGD)
not limited
Type of Waste
100% Industrial, fuel (bulk storage)
Facility Class
PC-1
County
Mecklenburg
Permit Status
Renewal
Regional
Office
MRO
Stream Characteristics
Receiving Stream
UT to Long Creek
Stream Classification
WS-IV
Stream Segment
[11-120-(2.5)]
Drainage basin
Catawba
Summer 7Q 10 (cfs)
0
Subbasin
03-08-34
Winter 7Q10 (cfs)
0
Use Support
Supporting
30Q2 (cfs)
0
303(d) Listed
No
Average Flow (cfs)
0.12
State Grid
F 15 S W
IWC (%)
100%
1 USGS Topo Quad
Mt. Island Lake, NC
Facility SummM
This facility is an industrial (flow <1 MGD) collecting stormwater from a Surface -Water Pollution
Prevention System in proximity to above -ground storage tanks (ASTs). Facilities include surface bulk -
storage of petroleum hydrocarbon fuels in excess of one million gallons. There are no significant changes
to this facility since the last permit renewal. The facility consists of the following wastewater treatment
units:
• oil -water separator (10,000-gal)
• two (2) holding tanks (10,000-gal each)
• bermed secondary containment for ASTs
• final holding pond (currently 160,000 gallons) with hand -operated discharge valve (normally
closed)
Monthly average FLOW (MGD) — Last 36 months Mar2012-Feb2015:
[Ave 0.137 MGD; Maximum, Monthly average flow = 0.285 MGD;
Minimum, Monthly average flow = 0.001]
Toxici — This permit requires Acute Toxicity Monitoring testing using Pimephales promelas to be
performed on an annual basis as a 24-hour static [TAE6C]. The facility failed a toxicity test on 02-11-14
and passed a resample on 02-28-14. Toxicity testing is quarterly for the renewal.
Compliance History — The facility has been compliant for the past five (5) years.
Fact Sheet
Renewal 2015 -- NPDES Permit NCO046213
Page 1

For Renewal — This permit reflects discharge at Outfall 001. DWR updated the following:
• added updates to facility map, outfall locations and parameter codes
• monitoring for Benzene, Phenol, Oil & Grease is monthly
• added Monthly Average Limit of 30.0 mg/L for Total Suspended Solids (TSS)
• for Oil & Grease [00556] the parameter code remains the same for submitting DMR/eDMR, but EPA
method 1664 (SGT-HEM) is used with results in mg/L
• replaced Phenol (single compound) [34694] with Total Recoverable Phenolics [32730]
• Acute Toxicity failure requires quarterly monitoring
• added Electronic Reporting - Discharge Monitoring Reports page Section A. (4.).
Stream — Discharge from WWTP for Outfall 001 is into an unnamed tributary to Long Creek [Stream
Segment 11-120-(2.5)]. The segment is listed as "supporting" it's parameters in the 2014 North Carolina
Integrated report and 303(d) list.
RPA — A Reasonable Potential Analysis (RPA) was not conducted on effluent parameters because Discharge
Monitoring Reports (DMRs) reported concentration below method -detection levels (MDLs) for the past four
and a half (4'/2) years (Sept2011-Feb2015) of data.
Fact Sheet
Renewal 2015 -- NPDES NC0046213
Page 2

Denard, Derek
From: Denard, Derek
Sent: Wednesday, June 24, 2015 12:42 PM
To: 'Leigh, Thomas G. (MPC)'
Subject: RE: Draft Permit NC0046213 Marathon Petroleum Company LP -Charlotte Terminal
Attachments: NC0046213 Marathon Permit and EFF Draft 2015.pdf Derek C Denard3.vcf
Tom,
I added a footnote that allows toxicity monitoring to be relaxed to annual once 5 consecutive samples pass (also see
attached draft):
5. Acute Toxicity (Fathead Minnow, 24-hour), during January, April, July and October [see section A.
(2.)]. If any WET -test fails, the Penmittee shall continue testing quarterly. If, after five (5) consecutive
sampling events, test results demonstrate no toxicity (i.e., "pass" or LC-50 > 100%), the Permittee may
petition the Division to relax monitoring as data may warrant.
This may be helpful in the future. The final should come out around July 27, 2015 when it is signed, which
is an anticipated date in my draft. Please note that the effective date September 1, 2015 is also
anticipated.
Sincerely,
Derek
AM Derek C Denard
ARM FrvVira:mzrtal spe_L#t
NCDENR Dvsicn of water Resources
water Quality petyre" Section
Compliance & bp -Red permitting and
(919)W7-6307
derekdenard�ncdenrspr
1Q7NW Sanea Cann,. RaLgk NC ZA99- 617
Ftgr(/portaLnrd«�roryMa�MyM91Wn yda
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.
From: Leigh, Thomas G. (MPC) [mailto:[e-mail]]
Sent: Tuesday, June 23, 2015 2:52 PM
To: Denard, Derek
Subject: RE: Draft Permit NC0046213 Marathon Petroleum Company LP -Charlotte Terminal
Derek:
Thank you Sir. Very good explanation and it makes good sense. Appreciate your quick and complete response. I will
look over the draft again to confirm. Again, Thank you Tom

From: Denard, Derek rmailto:derek.denard(alncdenr.govl
Sent: Tuesday, June 23, 2015 1:39 PM
To: Leigh, Thomas G. (MPC)
Subject: RE: Draft Permit NC0046213 Marathon Petroleum Company LP -Charlotte Terminal
Tom,
Thanks for the comments. Here is my reply to your questions in bold italics:
1. Under Section A. (1.) Effluent Limitations and Monitoring Requirements
• In the existing permit MPC has a T55 Daily Maximum of 45.0 mg/L. In the new permit the Daily
Maximum remains but a Monthly Average of 30 mg/L is added.
1. Does the twin limits tighten the permit requirement or does it provide an opportunity for re -
sampling and averaging the samples?
2. Does it mean that if a 45.0 mg/1 on one TSS sample, the terminal fails for the month? Or
does it mean, that the terminal can re -sample the full monthly parameters and if the TSS
monthly average is below 30.0 mg/L, the terminal still is considered compliant for the
month?
Yes, you may resample as often as you like and give a monthly average to meet the monthly
average limit of 30 mg/L However, you are only required to sample monthly to meet
frequency requirements. The rationale in our permitting strategy is that the EPA requires both
a Monthly Average and a Daily Maximum permit limit. TSS limits are recommended as a
minimum stormwater management practice, and are deemed good general indicators of
effluent stormwater quality for these facilities.
In the existing permit MPC has to conduct sample/analysis Quarterly for Benzene, Oil & Grease and
Phenol. In the new permit these same parameters must be sampled monthly. What triggered this
change? Based on the terminal's past NPDES good performance, it would appear that the new Draft
Permit would have the same sampling frequency, as the existing permit.
These changes to monthly sampling are based on our current strategy for petroleum bulk -storage
facilities for different reasons.
Oil & Grease now uses EPA Method 1664 and the current strategy sets monitoring at a
minimum of monthly.
Phenol [34694] has been replaced with Total Recoverable Phenolics [32730]. Since we have no
database monitoring is monthly to establish a database to apply a future reasonable potential
analysis using EPA standard 300 µg/L. Once we have data that shows no reasonable potential
it exceed the standard then we may relax monitoring to quarterly.
Benzene, according to the current strategy, for Water Supply (WS) waters is at a minimum
monthly. Benzene has a human health standard of 1.19 µg/L. Benzene is identified as a
human carcinogen and poses potential rick to drinking water.
Under Acute Toxicity in the existing permit requires Annual Sampling/Analysis. However in the new Draft Permit,
Quarterly sampling is listed in the Table. However, in Footnote Sit states Acute Toxicity is sampled Annually. In
Footnote 4 it states that Benzene, Toluene, Ethyl Benzene, Xylene, Naphthalene and MTBE are to be collected
concurrently with Annual Acute Toxicity. This is confusing. It would appear that we only conduct the Acute Toxicity
Annually and not Quarterly.
Acute Toxicity sampling is quarterly due to the 02-11-14 failure. The others references to
annual area type-o. Sorryfor the confusion. 1 have attached a correction to the draft permit
for your reference.
On the months that Acute Toxicity sampling occurs the parameters noted should be
sampled (concurrently) at the same sampling event.

I hope this answers you questions. Please contact me if you have any more questions.
Sincerely,
Derek
f Derek C Denard
EW=MerYW speca':-.t
WMENR Dyonaf Water Re�urce:
Water Qua% Perrrmj gsection:
CoffVhrce & EVeckted Perr.mirg Unit
(419)W7.6307
derekdenW@m,demgar
1617%W SarAnCa =. RaWgh. NCS69MM7
hnrRVe*taLnm.naayMcaMVM+aki+npdax
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.
From: Leigh, Thomas G. (MPC)[mailto:[e-mail]]
Sent: Monday, June 22, 2015 2:47 PM
To: Denard, Derek
Cc: Allocco, Marcia; Benjamin, Dawn M. (MPC)
Subject: FW: Draft Permit NC0046213 Marathon Petroleum Company LP -Charlotte Terminal
Derek:
Thank you for the opportunity to respond to the Draft Permit attached above and listed in your email below.
I have several questions concerning the permit & requests addressing the new Draft Permit. These items are listed
below.
1. Under Section A. (1.) Effluent Limitations and Monitoring Requirements
• In the existing permit MPC has a TSS Daily Maximum of 45.0 mg/L. In the new permit the Daily
Maximum remains but a Monthly Average of 30 mg/L is added.
1. Does the twin limits tighten the permit requirement or does it provide an opportunity for re -
sampling and averaging the samples?
2. Does it mean that if a 45.0 mg/I on one TSS sample, the terminal fails for the month? Or
does it mean, that the terminal can re -sample the full monthly parameters and if the TSS
monthly average is below 30.0 mg/L, the terminal still is considered compliant for the
month?
In the existing permit MPC has to conduct sample/analysis Quarterly for Benzene, Oil & Grease and
Phenol. In the new permit these same parameters must be sampled monthly. What triggered this
change? Based on the terminal's past NPDES good performance, it would appear that the new Draft
Permit would have the same sampling frequency, as the existing permit.
Under Acute Toxicity in the existing permit requires Annual Sampling/Analysis. However in the new
Draft Permit, Quarterly sampling is listed in the Table. However, in Footnote 5 it states Acute
Toxicity is sampled Annually. In Footnote 4 it states that Benzene, Toluene, Ethyl Benzene, Xylene,
Naphthalene and MTBE are to be collected concurrently with Annual Acute Toxicity. This is
confusing. It would appear that we only conduct the Acute Toxicity Annually and not Quarterly.

• It would appear consistent to also sample Benzene Quarterly along with the other Footnote 4
parameters and not singled out for monthly sampling/analysis.
Derek, give me a call to discuss to provide me with an explanation, so that I can better understand the conditions of this
new Draft permit and also to see if the terminal is eligible to have the permit sampling frequency remain the same as
the existing permit.
Thank you for your assistance in this Draft Permit questions & request. Tom
Thomas G. Leigh
Marathon Petroleum Company LP
Senior HES Professional
TT&R Environmental Compliance, Southern Region
Telephone: [phone] Extension 237
Cell Phone: [phone]
Fax: [phone]
Email: tgleiahCeDmarathonoetroleum.com
From: Denard, Derek rmailto:[e-mail]
Sent: Monday, June 08, 2015 3:37 PM
To: Moore, W G. (MPC); Leigh, Thomas G. (MPC)
Subject: Draft Permit NCO046213 Marathon Petroleum Company LP -Charlotte Terminal
Please find the attached draft permit for N00046213 Marathon Petroleum Company LP -Charlotte Terminal. Please
provide your comments, if any, to me via email [[e-mail]] or write to my attention care of DENR /
DWR / NPDES Program no later than July 10, 2015.
Derek CDenard
RMM Environmental Specia:st
NCDENU sionof Water Resources
WaterQuarny permitting section
Compflarse & Expedited Pennittirg Unit
[phone]
derekderard@ncdeW,pv
1617 Ms.15an-:ca cantar. Aa7Sgh• NC27S99-1617
htta/.arc+ntncdanragh'aDMO.�se'plp;rnr4a
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.
Email correspondence to and from this sender is subject to the N.C. Public Records Law and may be disclosed to third parties.

Denard, Derek
From:
Meadows, Susan
Sent:
Wednesday, June 24, 2015 8:09 AM
To:
Denard, Derek
Cc:
Bell, Wes; Parker, Michael
Subject:
RE: Correction to NC0046213 Marathon Petroleum Company, LP to reflect quarterly Tox
Hi Derek,
Those months will work just fine.
Susie
Susan Meadows, Environmental Biologist
Aquatic Toxicology Branch
DWR/Water Sciences Section
4401 Reedy Creek Road Raleigh, NC 27607
susan.meadowsCdncdenr.eov
tel: [phone]
fax: [phone]
E-mail correspondence to and from this address may be subject to the
North Carolina Public Records Law and may be disclosed to third parties.
From: Denard, Derek
Sent: Tuesday, June 23, 2015 1:48 PM
To: Meadows, Susan
Cc: Bell, Wes; Parker, Michael
Subject: Correction to NC0046213 Marathon Petroleum Company, LP to reflect quarterly Tox
Susan,
I had to make a correction to the toxicity page to reflect quarterly instead of annual sampling since they had a failure on
02-11-14. Is January, April, July and October ok for quarterly sampling?
Derek
_4j",A DerekCDenard
M_FW_ Enrronmarta Spec .t
NCDENRDYwnof WatwRmwcm
Water Q-"I% PermitCrg Section
Gmorwxe & D*emted Pemdttirg Unit
(91CM7.6307
derekderard@ncd>tugw
1517 Mr.ISarrca C¢nts, Rakgh, NC T'�9-161i
bttpq W tit>tcdm cegMvbMV M.9/DSMPdas
E-mail correspondence to and from this address may be subject to the North Carolina Public Records Law and may be
disclosed to third parties.

PUMA
NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory
Governor
June 8, 2015
MEMORANDUM
To: Keri B. Cantrell, PhD, PE
Engineer (DWR/PWSS)
Mooresville Regional Office
From: Derek C. Denard
DWQ / NPDES Program
919-807-6307;Fax [phone];[e-mail]
Donald R. van der Vaart
Secretary
Subject: Review of Discharge to Surface Waters Designated Water Supply (WS)
• unnamed tributary to Long Creek (11-120-(2.5)], WS-IV, Catawba River Basin;
• Renewal of Individual NPDES Permit for fuel (bulk storage) terminal, groundwater
remediation
for: NPDES NCO046213
Marathon Petroleum Company LP — Charlotte Terminal
located at 8035 Mount Holly Street, Charlotte, NC 28214
Mecklenburg County
Please provide your comments by July 10, 2015 [email OK]
RESPONSE:
—X_ I have reviewed the draft permit and determined that the proposed discharge is not located
sufficiently close to any existing or known proposed public water supply intake C—miles) so as to
create an adverse effect on water quality. The DWR concurs with the issuance of this permit
provided the Permittee properly operates and maintains the facility; the Permittee meets the stated
effluent limits prior to discharge; and the discharge does not contravene the designated water
quality standards.
I concur with issuance of the above permit provided the following conditions are met:
I oppose the issuance of the above permit based on reasons stated below, or attached:
Signed: Date:_6/10/2015_
cc: rile
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Phone: [phone]Internet: www.ncwaterquality.org
An Equal Opportunity I Arfirmalive Acton Employer— Made in part by recycled paper

D
North Carolina
Mecklenburg County
tEFERENCE: 145583
The Charlotte Observer Publishing Co.
Charlotte, NC
} ss Affidavit of Publication
}
Charlotte Observer
NCDENR/DWQ/POINT SOURCE
1001781776 Public Notice North Carolina Environmental
Management Commission/NPDES Unit 1617
Mail Service Center Raleigh, NC 27699-1617
3efore the undersigned, a Notary Public of said County and
State, duly authorized to administer oaths affirmations, etc.,
)ersonally appeared, being duly sworn or affirmed according
o law, doth depose and say that he/she is a representative of
the Charlotte Observer Publishing Company, a corporation
xganized and doing business under the laws of the State of
Delaware, and publishing a newspaper known as The
harlotte Observer in the city of Charlotte, County of
Oecklenburg, and State of North Carolina and that as such
le/she is familiar with the books, records, files, and business
rf said Corporation and by reference to the files of said
)ublication, the attached advertisement was inserted. The
ollowing is correctly copied from the books and files of the
aforesaid Corporation and Publication.
3UBLISHED ON: 06/10/2015
\D SPACE: 127 LINES
-ILED ON: 06/10/2015
JAME:
n TestimonN Whereof I have hereunto set
11m
go
and affixed my seal, the day
My con
PUBLIC NOTICE
North D okha Emaonmental ManagameM
CommtssimlNPDES LIM
1617 Mall Stmr. Center
Raleigh, NC 2716%7
Notice of Intent to Issue a NPDES
Wasteweler Permit
The North Cerdina Envirorunemal
L.P.
County,
Creek,
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Magenan Terminal. Noldmgs,
Charlotte 11 Tarminal, Me Ienburg i
ePppbed to renew NPDES
INC00051M) for discharge to Wng
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JUN 1 0 2015
My Commission Expires May 27, 2016

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Permit Reviewer Notes - Derek Denard
Permit Number:
Goo Yly z 1
Applicant/Facility Name:
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Permit Status:
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Regional Office:
Latitude: 3 r , �V
Longitude: -�I Q ` (J
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Facility Class:
County:
Outfall:
Flow:
Applicant Address:
ell
Facility Address:
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Type of Waste:
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Stream Notes
Receiving Stream: T
Stream Segment:
6 — l Zb — 2.s
Stream Classification:
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Drainage Basin: /
LJ�Qw y�!
Summer &Q10 (cfs):
6
Subbasin:
Winter 7Q10 (cfs):
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HUC Code:
b7oS Dlol o�
30Q2 (cfs):
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State Grid: ` /
Average Flow (cfs):
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USGS Topo Quad:
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303 (d):
U
Dates
I

Terminal, Transport & Rail
Marathon Petroleum Company LP
539 South Main Street
Findlay, OH 45840
Tel: [phone]
November 19, 2014
N.C. Department of Environment and Natural Resources
Division of Water Quality— NPDES Unit
1617 Mail Services Center
Raleigh, NC 27699-1617
Phone: [phone]
Subject: NPDES Permit Application — Short Form C— Minor Industrial
Permit Renewal Request
Marathon Petroleum Company LP —Charlotte Terminal
Permit Number: NCO046213
Division Representative:
RECEIVED/DENR/DWR
NOV 2 1 2014
Water (Duality
Pem>nting Section
Marathon Petroleum Company LP (MPC) owns and operates the Petroleum Bulk Storage and
Distribution Terminal located at 8035 Mount Holly Road in Charlotte. The facility is covered under the
above -referenced National Pollutant Discharge Elimination System Permit (NPDES).
The subject permit is scheduled to expire on June 30, 2015. MPC is hereby requesting that the permit
be renewed. As required, MPC is including one (1) original and two (2) copies of the application.
Renewal Attachments:
1. Completed and Signed NPDES Permit Application — Short Form C—Minor Industrial
2. Topological Map showing location of Terminal and Outfall 001
3. Spreadsheet providing three (3) years of Discharge Data
4. Applicable pages of three (3) years of DMRs
MPC's Charlotte Terminal does not generate sludge as part of a manufacturing process. Due to the fact
that the majority of the terminal is open to the environment, there is sludge (dust, dirt, grime) which
occasionally builds up within the facility drains. If the sludge originates in an area of the facility where
contact with petroleum products is possible, the sludge is collected, drummed, evaluated, labeled and
properly disposed of at an off -site location.
If you or any of the Division's staff should have any questions or require additional information, please
contact me at 813.344.7504 or via email at [e-mail].
Respectfully,
homas G. Leigh
Senior HES Professional
TT&R Environmental Compliance, Southern Region
Enclosures
cc: posted to electronic Environmental Manual (Water; NPDES; NPDES Permit Application)