NC0000795_Permit Issuance_19960429

NPDES DOCUMENT SCANNING COVER SLEET
NPDES Permit:
NC0000795
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Instream Assessment
(67b)
Speculative Limits
Environmental Assessment (EA)
Permit
History
Document Date:
April 29, 1996
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State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
Mr. Michael E. Slemp
Exxon Company, U.S.A.
Post Office Box 30451
Charlotte, North Carolina 28230-0451
April 29, 1996
Subject: NPDES Permit Issuance
Permit No. NC0000795
Exxon Products Terminal #4187
Guilford County
Dear Mr. Slemp:
In accordance with the application for a discharge permit received on September 22, 1995, the
Division is forwarding herewith the subject NPDES permit. 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 December 6, 1983.
In response to your April 12, 1996 letter concerning the NPDES draft permit no. NC000795 for
Exxon Products Terminal #4187, we have addressed your specific concerns as follows:
1. On the SUPPLEMENT TO PERMIT COVER SHEET "oil/water separators" has been changed to "oil/water
separator".
2. On the EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS sheet, stormwater has been
modified to stormwater and washdown water.
In addition, it appears as though there is more than one term for the combination of tank bottom water and
virgin fuel. You use the term off -specification product, whereas we were referring to this as the rag layer. There
may be other terms as well. Please let us know if there is an universally accepted term for this combination of
tank bottom water and virgin fuel.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicatory hearing upon written request within thirty (30)
days following receipt of this letter. This request must be in the form of a written petition, conforming to
Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative Hearings,
Post Office Drawer 27447, Raleigh, North Carolina 27611-7447. Unless such demand is made, this
decision shall be final and binding.
Please take note that this permit is not transferable. Part II, E.4. addresses the requirements to be
followed in case of change in ownership or control of this discharge.
This permit does not affect the legal requirements to obtain other permits which may be required by
the Division of Environmental Management or permits required by the Division of Land Resources or any
other Federal or Local governmental permit that may be required.
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

Mr. Slemp
April 29, 1996
Page 2
If you have any questions concerning this permit, please contact Paul B. Clark at telephone numbcr
[phone], extension 580.
SOrigrnal Signed By
David A. Goodrich
A. Preston Howard, Jr., P,E,
Enclosures
cc: Central Files
Winston-Salem Regional Office, Water Quality Section
Mr. Roosevelt Childress, EPA
Permits and Engineering Unit
Facility Assessment Unit
Aquatic Survey and Toxicology Unit

Permit No. NC0000795
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF ENVIRONMENTAL MANAGEMENT
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
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,
Exxon Company, Inc.
is hereby authorized to discharge wastewater from a facility located at
Greensboro Marketing Terminal
6907 West Market Street
Greensboro
Guilford County
to receiving waters designated as an unnamed tributary to East Fork Deep River in the Cape Fear R;v'r
Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I,
II, III, and IV hereof.
The permit shall become effective June 1, 1996
This permit and the authorization to discharge shall expire at midnight on March 31, 2001
Signed this day April 29, 1996
Original Signed By
David A. Goodrich
A. Preston Howard, Jr., P.E., Director
Division of Environmental Management
By Authority of the Environmental Management Commission

SUPPLEMENT TO PERMIT COVER SHEET
Exxon Company, U.S.A.
is hereby authorized to:
Permit No. NC0000795
1. Continue to operate the existing oil/water separator and lined collection basin located at
Greensboro Marketing Terminal, 6907 West Market Street, Greensboro, Guilford County
(See Part III of this permit), and
2. Discharge stormwater (from rainfall to industrial activity areas) and water (from industrial
activity areas including the loading rack, the vapor recovery unit containment slab, and the
pump manifold and truck pump -back containment slab) at the location specified on the
attached map into an unnamed tributary to East Fork Deep River which is classified C1asvN
waters in the Cape Fear River Basin.

A. ( ). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Permit No. NC0000795
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge
stormwater and washdown water from outfall(s) serial number 001. Such discharges shall be limited and monitored by the Permittee as
specified below:
Effluent Characteristics Discharge Limitations
Monthly Avg. Weekly Avg.
Flowl
Total Suspended Solids
Oil and Grease2
Phenol
Benzene
EPA Methods 624/625
- chlorophenol
4 - chlorophenol
2,3 - dichlorophenol
2,5 - dichlorophenol
2,6 - dichlorophenol
3,4 - dichlorophenol
2,3,4,6 - tetrachlorophenol
3 - methyl - 6 - chlorophenol
Acute Toxicity3
Monitoring Requirements
Measurement
Daily Max. Frequency
Monthly
45.0 mg/1 Monthly
Monthly
Monthly
Monthly
Semi-annually
Semi-annually
Semi-annually
Semi-annually
Semi-annually
Semi-annually
Semi-annually
Semi-annually
Semi-annually
Annually
Sample
Type_
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Grab
Sample
Location
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Effluent
Footnotes:
1 Where no measurable discharge occurs, "no discharge" should be clearly noted on the submitted monthly discharge monitoring report.
Flow is measured using flow meter at this facility.
2 Where possible, the grab sample for oil and grease should be skimmed from the surface of a quiescent (calm water) zone.
3 Acute Toxicity (Fathead Minnow 24 hour) Monitoring, Epidosic, See Part III, Condition E.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
There shall be no direct discharge of tank solids, tank bottom water, or the off -specification product.
There shall be no direct discharge of tank contents following hydrostatic testing unless benzene concentration is less than 1.19 ug/1 and toluent
concentration is less than 11 ug/1.

Part III Permit No. NC0000795
E. ACUTE TOXICITY MONITORING (ANNUAL)
The permittee shall conduct annual toxicity tests using protocols defined as definitive in E.P.A.
Document EPA/600/4-90/027 entitled "Methods for Measuring the Acute Toxicity of Effluents to
Freshwater and Marine Organisms." The monitoring shall be performed as a Fathead Minnow
(Pimephales promelas) 24 hour static test. Effluent samples for self -monitoring purposes must be
obtained below all waste treatment. The permittee will conduct one test annually, with the annual
period beginning in January of the calendar year of the effective date of the permit. The annual test
requirement must be performed and reported by June 30. If no discharge occurs by June 30,
notification will be made to the Division by this date. Toxicity testing will be performed on the next
discharge event for the annual test requirement.
The parameter code for this test is TAE6C. All toxicity testing results required as part of this permit
condition will be entered on the Effluent Discharge Form (MR-1) for the month in which it was
performed, using the appropriate parameter code. Additionally, DEM Form AT-1 (original) is to be
sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of
Environmental Management
4401 Reedy Creek Rd.
Raleigh, N.C. 27607
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 effluenttoxicity 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 Environmental Management 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.
Failure to submit suitable test results will constitute noncompliance with monitoring requirements.
AAM Fathead 24 Version 3/96

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NORTH CAROLINA DEPARTMENT OF ENVIRONMENT
HEALTH AND NATURAL RESOURCES
DIVISION OF ENVIRONMENTAL MANAGEMENT
MEMORANDUM
TO: Paul Clark
THROUGH Steve Maunek
FROM: ' Ron Linville
DATE: 951208
SUBJECT: Exxon Products Terminal
NPDES Permit NC0000795
Guilford County
a,ct
A site visit was conducted on 951129 at this facility with
Erwin Gaston and Mr. Jim Bruce, Terminal Superintendent. It was
determined that no changes had occurred at this facility that
would require modification of the last staff report other than
Mr. Bruce now being the new superintendent.
For your information, the facility is considering extending
the cover over the loading rack to further reduce stormwater
exposure and the company has replaced the old O/W separator with
a more sophisticated unit. They have installed a non tank
surface water collection system that has an automatic control
valve which is designed to close thereby forcing stormwaters into
the onsite retention basin. The tank farm pond basin was lined
with a heavy double sealed plastic liner in July of 1994. A new
site plan is attached.
WSRO-WQ recommends that the permit be reissued. Please see
the Facility Rating Sheet for additional information.
CC:
Central Files
WSRO
County Environmental Health Dept.
Technical Support

cc: Permits and Engineering (NPDES)
Technical Support
Guilford County Emergency Management
Guilford County Planning and Dev. Dept.
Central Files
WSRO L,/'
Date March 8, 1990
Page 1 of 4
NPDES STAFF REPORT AND RECOMMENDATIONS
County Guilford
NPDES Permit No. NC0000795
PART I - GENERAL INFORMATION
1. Facility and Address:
Exxon Company, U.S.A., Greensboro Terminal, 6907 W.
Market Street, Greensboro, North Carolina (P. O. Box
18363, 27419). Mailing Address: J. F. Marcogliese,
Distribution Manager, Exxon Company, U.S.A., P. O. Box
4415, Houston, Texas 77210-4415
2. Date of Investigation: March 5, 1990
3. Report Prepared by: Arthur R. Hagstrom, Environmental
Engineer, DEM, WSRO, WQ
4. Persons Contacted and Telephone Number:
Mr. A. D. Auten, Terminal Superintendent, Greensboro
Terminal Telephone [phone]
5. Directions to Site:
From the Junction of I-40 and Chimney Rock Road, go
north on Chimney Rock Road, then left of West Market
Street to the terminal.
6. Discharge Point - Latitude: 36° 04' 34" Flows above
ground fgr approx. 50' +/-
Longitude: 79 55' 42"
Elevation: 895' +/-
Attach a USGS Map Extract and indicated treatment plant
site and discharge point on map.
USGS Quad No. C19SW or USGS Quad Name Guilford, NC
7. Size (land available for expansion and upgrading):
Over-all site is 28 acres and most of the site is
fenced, paved, graveled, or under tanks, buildings, or
structures.

Page 2 of 4
NC0000795
March 8, 1990
8. Topography (relationship to flood plain included):
The over-all site slopes to the South (2 to 4%) from
the railroad and to the North from the railroad. There
is a large paved fueling, parking, and vehicle storage
area; large dikes around tanks. There is a man-made
pond on the site. The site is not in a flood plain.
9. Location of nearest dwelling:
Over 1000 feet. Existing and new commercial
construction is somewhat closer.
10. Receiving stream or affected surface waters: The
receiving pipe is located approx. 50 feet from the
discharge pipe. The discharge goes under another
terminal's graveled site.
a. Classification:
b. River Basin and Subba in No.: Cape Fear, 03-06-08
c. Describe receiving stream features and pertinent
downstream uses: Up to now the storm water and
oil/water discharges flow into an adjacent
Company's storm drainage system and then surface
300'+/- South into an open drainage (wet weather)
ditch. It then goes under Burnt Poplar Road and
South to Colonial Pipeline's Ponds and to an U.T.
to East Fork of Deep River, The land between the
Amarada Hess terminal and I-40 is now undergoing
major development and most drainage from several
terminals will soon be enclosed in storm drains to
I-40.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. Type of wastewater: 0% Domestic
100% Industrial, and surface
run-off
a. Volume of Wastewater: <.100 +/- MGD. The flow is
from the treatment areas, oil/water separators and
faultative/separatory/measuring lake.
b. Types and quantities of industrial wastewater:
Low quantities of contaminants (unknown)
c. Prevalent toxic constituents in wastewater:
Gasoline and oil derivities (unknown)

Page 3 of 4
NC0000795
March 8, 1990
d. Pretreatment Program (POTWs only): N/A
in development approved
should be required not needed
2. Production rates (industrial discharges only) in
pounds: N/A
a. highest month in the last 12 months
b. highest year in last 5 years
3. Description of industrial process (for industries only)
and applicable CFR Part and Subpart: N/A
4. Type of treatment (specify whether -proposed or
existing):
Existing. Collection system (spills and storm),
oil/water separators, multiple oil tank diked storage),
a small diked containment pond with oil/water separator
/ system, a multiple pump discharge system with flow
v meter (measure and record), a discharge pipe (on
' adjacent land) and a discharge channel of approx. 50'
I, +/- to an underground discharge pipe.
�1 5. Sludge handling and disposal scheme:
a. Water bottoms are stored in a separate small tank
ti, and disposal is contracted.
b. Heavy tank bottoms are placed in drums and stored
on site for pick up.
c. Disposal contractors are used, and disposal
includes appropriate documents
6. Treatment plant classification: Grade I
Flow 3; Flow measurement and recording, 2; Oil/Grease
2; and Holding Pond (SD) 5 = 12
7. SIC Code(s) 5171
Wastewater Code(s) 37 39
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction
Grants Funds (municipals only)? No
2. Special monitoring requests: No upstream

:fa*
Page 4 of 4
NC0000795
March 8, 1990
3. Additional effluent limits requests: Normal
requirements for oil terminals discharging to WS
waters.
4. Other: This terminal has ceased using any steam
vehicle cleaners and they no longer wash their
trucks/tanker trailers on site. These are contracted
off site. They have put in bottom loading units for
filling truck tankers. They have put in flow
measurement. They are now adjusting flows to meet
phenol levels. They have the only metered discharge
system at the Greensboro Tank Farm.
PART IV - EVALUATION AND RECOMMENDATIONS
The WSRO recommends that Exxon's Permit be re -issued
and that it includes current monitoring and that:
1. The GWQ Section has no problems with the site and
the holding pond.
2. The Division of Health Services should be allowed
to comment on this existing discharge.
Signature of rep
/11
preparer
Water Quality Supe5fisor
•
•

I" se
•
ait
EON COMPANY, U.S.A.
P.O. BOX 4415 - HOUSTON, TEXAS 77210
MARKETING DEPARTMENT
DISTRIBUTION
ENVIRONMENTAL, SAFETY AND TRAINING
NANCY LUTHY
OPERATIONS SPECIALIST
[phone]
April 6, 1993
Exxon Greensboro Terminal
Permit No. NC 0000795
Colleen Sullins, Supervisor
Division of Environmental Management
Permits Group
P. 0. Box 29535
Raleigh, North Carolina
Dear Ms. Sullins,
I am writing this letter under the recommendation of Arthur Hagstrom, Environmental
Engineer for the Department of Environmental Management, Winston Salem Office. I
contacted Mr. Hagstrom because of a phone call I received from the lab we use to do our
DMR analysis, Research Analytical Laboratories, Inc. in Kernersville, NC. Sid Champion
from Research Analytical said he had just received a call from the State's Lab
Certification group and that he had been told to no longer report the detection limit of
phenol as less than 1 microgram per liter level, but instead to report Tess than 5
microgram per liter level.
I am concerned about this new detection limit because our permit limits the discharge to
.001 pounds per day of phenol. By increasing the detection limit to 5 micrograms you
have reduced the amount of effluent we can discharge by a magnitude of 5 to 24,000
gallons per day. This would create a tremendous operating burden for us by requiring the
operating personnel to limit the amount of water we discharge each day. The drainage at
the terminal was designed to prevent the discharge of any untreated water from the
terminal; therefore, we have storm water, from all paved areas and the tank farm, flowing
through our waste water treatment system. This means that when heavy rains occur we
get a tremendous volume of water into our system. We have a pond at the downstream
end of our waste water treatment system however it is not large. With the limitation of
being able to only discharge 24,000 gallons per day it might cause, in times of heavy
rainfall, the pond to overflow.
I contacted Mr. Hagstrom because he is the person at the Regional office who is
responsible for monitoring our permit. When I told him of my concerns, he said he was
A DIVISION OF EXXON CORPORATION
RECYCLED

aware of the problem but that the directive for limiting the phenol detection limit
originated out the Raleigh Lab Certification group. When I asked him what recourse we
had he recommended I write to you and request a solution.
I would appreciate your help with this matter. If the State of North Carolina is changing
its policy on phenol detection limits it would seem appropriate to notify all permit holders
of this change in policy and to provide a schedule for compliance. A five fold decrease in
a permit limit is tremendous change and the State cannot realistically expect permit
holders to be able instantaneously meet this new limit.
I would appreciate your consideration of this matter. A timely response would be
appreciated so we can begin to take the necessary steps to achieve compliance with our
permit. Thank you for you help with this matter.
Sincerely,
Nancy Luthy
cc: D. Hale, J. Roberts, C. McGee