NC0065307_Draft Permit_20180711

ROY COOPER
Governor
N�' MICHAEL S. REGAN
Secretary
LINDA CULPEPPER
Water Resources Interim Director
ENVIRONMENTAL QUALITY
July 11, 2018
Mark C. King
GPM Southeast LLC
8565 Magellan Parkway, Suite 400
Richmond,VA 23227
Subject: Draft NPDES Permit NC0065307
Scotchman#3303
Class WW-2, Grade I-IV Biological WPCS
New Hanover County
Dear Mr. King:
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 no significant changes from the existing permit.
> Regulatory citations were added
> HUC and Stream Index numbers were added
> A modified outfall map is included
With this notification, the Division will solicit public comment on this draft permit by publishing a notice in
newspapers having circulation in the general Caldwell County area,per EPA requirements. Please provide
your comments, if any,to me 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 the telephone number listed at the bottom of this page, or via e-mail [[e-mail]].
Sincerely,
/..043 Las_
Emily DelDuco
Environmental Specialist II
NPDES program
cc: NPDES Unit
State of North Carolina I Environmental Quality I Water Resources
1617 Mail Service Center I Raleigh,NC 27699-1617
919 707 9125 919-807-6389 FAX
https://deq.nc.gov/about/divisions/water-resources/water-resources-permits/wastewater-branch/npdes-wastewater-permits

Permit NC0065307
Grade I-IV Biological WPCS
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENTAL QUALITY
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
(NPDES)
In compliance with the provision 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, the
GPM Southeast, LLC
are hereby authorized to discharge wastewater from a facility located at the
Scotchman #3303
1610 U.S. Hwy 421
Wilmington
New Hanover County
to receiving waters designated as the Northeast Cape Fear River in the Cape Fear River Basin in
accordance with effluent limitations, monitoring requirements, and other applicable conditions set
forth in Parts I, II, III and IV hereof
This permit shall become effective , 2018.
This permit and authorization to discharge shall expire at midnight on December 31, 2023.
Signed this day ., 2018.
Linda Culpepper, Interim Director
Division of Water Resources
By Authority of the Environmental Management Commission
Page 1 of 7

Permit NC0065307
Grade I-IV Biological WPCS
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.
GPM Southeast, LLC
is hereby authorized to:
1. Continue to operate an existing 0.004 MGD wastewater treatment facility that includes the
following components:
• Grease trap(restaurant)
• 5,000 gallon primary tank
• 2—3,000 gallon equalization tanks
• 2—equalization pumps at % HP
• Aquacell MBBR tank with media
• Aquapoint Bioclere 24/20 (trickling filter)
• Wet well— 1,225 gallon capacity
• Effluent lift station with two 0.4 HP pumps
• Tertiary bag filters
• Enaqua U/V system
• Effluent pump station
This facility is located west of Wilmington on U.S. Highway 421 at the Scotchman#3303 [Truck
Stop] WWTP in New Hanover County.
2. Operate facilities for a separate stormwater discharge in accordance with Permit SW8900421
3. Discharge softener backwash&reverse osmosis (RO)reject wastewaters from the water
purification system.
4. Discharge treated domestic wastewaters combined with softener backwash &RO reject
wastewaters, via outfall 001 at the locations specified on the attached map, into the Northeast Cape
Fear River [Stream Index: 18-74-(61)], currently classified SC-Swamp waters within the Cape
Fear River Basin [HUC: 030300070809].
Page 2 of 7

Permit NC0065307
Grade I-IV Biological WPCS
PART I
A. (1) INTERNAL LIMITATIONS AND MONITORING REQUIREMENTS - Outfall OO1A
[15A NCAC 02B.0400 et seq., 02B.0500 et seq.]
During the period beginning on the effective date of this permit and lasting until expiration,the Permittee is
authorized to mix treated wastewater from the Wastewater Treatment Plant's Internal Outfall OO1A with other
wastewaters for additional monitoring at Outfall 001 (see A. (2)). Such internal wastewater discharges shall
be limited and monitored'by the Permittee as specified below:
LIMITS MONITORING
eDMR REQUIREMENTS
PARAMETER Parameter Monthly Daily Measurement Sample Sample
Codes Average Maximum Frequency Type Location2
Flow 3 50050 0.004 MGD Continuous Recording Influent or
Internal Outfall 001 A
BOD,5 day(20°C) CO310 30.0 mg/L 45.0 mg/L Weekly Grab Internal Outfall 001A
Total Suspended Solids CO530 30.0 mg/L 45.0 mg/L Weekly Grab Internal Outfall OO1A
Footnotes:
1. The permittee shall submit discharge monitoring reports electronically using NC DWR's eDMR system[see A. (4)].
2. Influent: domestic wastewater prior to entering WWTP. Internal Outfall OO1A: internal monitoring point measuring
treated domestic wastewater effluent prior to mixing with wastewaters from the water treatment plant in the wet well.
3. Flow monitoring data from the recording and sampling device located prior to the MBBR tank will be accepted until
modifications can be made to sample actual WWTP influent or effluent flow.
Page 3 of 7

Permit NC0065307
Grade I-IV Biological WPCS
A. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS —Outfall 001
[15A NCAC 02B.0400 et seq., 02B.0500 et seq.]
During the period beginning on the effective date of this permit and lasting until expiration,the Permittee is
authorized to discharge treated domestic wastewaters mixed with softener backwash&RO reject wastewater
from Outfall 001. Such discharges shall be limited and monitored' by the Permittee as specified below:
LIMITS MONITORING
eDMR REQUIREMENTS
PARAMETER Parameter
Monthly Daily Measurement Sample Sample
Codes Average Maximum Frequency Type Location2
Total Flow(MGD) 50050 Weekly Estimate Effluent
Dissolved Oxygen 00300 Daily average>5.0 mg/L Weekly Grab Effluent
Enterococci 61211 35/ 100 mL 276/ 100 mL Weekly Grab Effluent
(geometric mean)
Temperature (C°) 00010 Weekly Grab Effluent
pH 00400 Not<6.8 nor>8.5 Weekly Grab Effluent
Standard Units
Total Residual Chlorine4 50060 13 µg/L 2/Week Grab Effluent
Total Suspended Solids 00530 30.0 mg/L 45.0 mg/L 2/Month Grab Effluent
Ammonia(NH3 as N)(mg/L) C0610 2/Month Grab Effluent
Oil and Grease 00556 30.0 mg/L 60.0 mg/L Monthly Grab Effluent
Total Dissolved Solids(mg/L) 70296 Monthly Grab Effluent
Conductivity(µmhos/cm) 00094 Monthly Grab Effluent
Turbidity(NTU) 00076 Monthly Grab Effluent
Salinity(ppth) 00480 Monthly Grab Effluent
Total Chloride (mg/L) 00947 Monthly Grab Effluent
Total Arsenic (µg/L) 01002 Monthly Grab Effluent
Total Coppers (µg/L) 01042 Quarterly Grab Effluent
Total Zinc5 (µg/L) 01092 Quarterly Grab Effluent
Acute Toxicity6 22414 Quarterly Grab Effluent
Footnotes:
1. The permittee shall submit discharge monitoring reports electronically using NC DWR's eDMR system[see A. (4)].
2. Effluent: combined wastewaters from the domestic wastewater treatment plant and the water treatment system after
UV treatment and prior to discharge.
3. Total Residual Chlorine(TRC)limit and monitoring requirements apply only if chlorine is used by the facility and is
present in the wastewater. The Division shall consider all effluent TRC values reported below 50µg/L to be in
compliance with the permit. However,the Permittee shall continue to record and submit all values reported by a North
Carolina certified laboratory(including field certified),even if these values fall below 50 pig.
4. These parameters shall be sampled in conjunction with Toxicity testing.
5. Acute Toxicity(Fathead Minnow 24-hour)No Significant Mortality @ 90%;January,April,July,and October,See
Special Condition A. (3.).
There shall be no discharge of floating solids or foam visible in other than trace amounts.
Page 4 of 7

Permit NC0065307
Grade I-IV Biological WPCS
A. (3) ACUTE TOXICITY (QUARTERLY) -- MONITORING ONLY
[15A NCAC 02B. 0500 et seq.]
The Permittee shall conduct acute toxicity tests on a quarterly basis 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.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
1621 Mail Service Center
Raleigh,N.C. 27699-1621
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 5 of 7

Permit NC0065307
Grade I-IV Biological WPCS
A. (4) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
[G.S. 143-215.1(b)]
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 ISupersedes Section D.(2.)and Section E. (5.)(a)1
The permittee shall submit 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 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://portal.ncdenr.org/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.
Page 6 of 7

Permit NC0065307
Grade I-N Biological WPCS
2. 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.
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://portal.ncdenr.org/web/wq/admin/bog/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:
"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."
3. 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

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GPM Southeast, LLC - Scotchman #3303 Not% 4
NPDES Permit NC0065307 .A Aim 4 ` "r`
1610 U.S. Hwy 421 ,,s.o�,°�° r_i 4
Receiving Stream:Northeast Cape Fear River Stream Class: SC-Swamp
Stream Segment: 18-74-(61) Sub-Basin#:03-06-23 34.252778°N, -77.952778°W
River Basin:Cape Fear HUC:030300070809 SCALE NC Grid:J27SW
County:New Hanover 1:24,000 USGS Quad:Castle Hayne