NC0003671_PERMIT ISSUANCE_19960503

NPDES DOCUMENT SCANNIN6 COVER SNEET
NPDES Permit:
NC0003671
Document Type:
Permit IssuanceNr
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Speculative Limits
Correspondence
Instream Assessment (67B)
Environmental Assessment (EA)
Permit
History
Document Date:
May 3, 1996
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State of North Carolina , 'A
Department of Environment,
Health and Natural Resources • 0
Division of Environmental Management
James B. Hunt, C) E H N FR
Jonathan B. Howes,
Gs, Secretary
A. Preston Howard, Jr., P.E., Director
May 3, 1996
Mr. C.B. Smiley
Amoco Oil Company
P.O. Box 18048
Greensboro, North Carolina 27419
Subject: NPDES Permit Issuance
Permit No. NC0003671
Amoco Oil Company - Greensboro Teraina!
Guilford County
Dear Mr. Smiley:
In accordance with the application for a discharge permit received on July 10, 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 US Environmental Protection Agency dated December 6, 1983. i
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) ai
days following receipt of this letter. This request must be in the form of a written petition, conforming to
Chapter 15011 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 notice this permit is not transferable. Part II, EA. 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,
Coastal Area Management Act or any other Federal or local governmental permit that may be required.
If you have any questions concerning this permit, please contact Jeanette Powell at telephone number
[phone], extension 537.
SiUI91naI Signed By
David A Goodrich
A. Preston Howard, Jr., P.E.
cc: Central Files
Winston-Salem Regional Office
Mr. Roosevelt Childress, EPA
'Penmits`and"Engineering Utiit
lity A Facissessment Unit
Aquatic Survey & Toxicology Unit
P.Q. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirrnative Action Employer 50% recycled/ 10% post -consumer paper

Permit No. NC0003671
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF ENVIRONMENTAL MANAGEMENT
TO DISCHARGE WASTEWATER UNDER THE
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards w
and regulations promulgated and adopted by the North Carolina Environmental Management L
Commission, and the Federal Water Pollution Control Act, as amended,
Amoco Oil Company
is hereby authorized to discharge wastewater from a facility located at
Greensboro Terminal
7109 West Market Street
Greensboro
Guilford County
to receiving waters designated as an unnamed tributary to Horsepen Creek in the Cape Fear River 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 January 31, 2001.
Signed this day May 3, 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

Permit No. NC0003671
SUPPLEMENT TO PERMIT COVER SHEET
Amoco Oil Company
is hereby authorized to: I
1. Continue to operate an oil/water separator located at Greensboro Terminal, 7109 West
Market Street in Greensboro, Guilford County (see Part III of this permit), and
2. Discharge hydrostatic test water, stormwater from diked storage tank area and stormwater "
from truck loading rack area from said treatment works at the location specified on thl;
attached map into an unnamed tributary to Horsepen Creek which is classified Class W$-111
NSW waters in the Cape Fear River Basin.
:.0

A. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS - FINAL Permit No. NC0003671
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge stormwater and
hydrostatic test water from outfall serial number 001. Such discharges shall be limited and monitored by the Permittee as specified below:
EFF1:itJENT` CHARAGTIERISTICS
LIMITS
1WONITORING :-
.
.REO:UEREMENTS
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Effluent
Flowl
Monthly
1
Total Suspended Solids
45.0 m I
Monthly
Grab
Effluent
Oil and Grease2
Monthly
Grab
Effluent
Phenol
Monthly
Grab
Effluent
Benzene
MontM
Grab
MTBE
Semi-annually
Grab
!.r
X lene
Semi-annual)
Grab
Fff Dent—f`
EPA Methods 624/6253
Se ' ua
Grab
Effluent
Acute Toxicity4
Grab
Effluent
Footnotes:
1 Where no measurable discharge occurs, "no discharge" should be clearly noted on the submitted monthly discharge monitoring report. Flow maybe
monitored in one of four ways:
a ) Measure flow continuously,
b) Calculate flow based on the area draining to the outfall, the built -upon area and the total rainfall (this method of flow measurement
should not be used at facilties that have large ponds to collect surface water runoff),
c) Estimate by flow measurement at 20-minute intervals during the entire discharge event, or
d) Calculate flow from pump log data.
2 Where possible, the grab sample for oil and grease should be skimmed from the surface of a quiescent (calm water) zone.
3 EPA Method 625 includes five (5) chlorophenols. If one or more chlorophenol(s) is detected at concentrations greater than or equal to 50gg/l, the
permittee will be required to analyze for the eight chlorophenols listed below in addition to EPA Method 625. This additional required monitoringwili
begin with the permittee's next scheduled monitoring'event, occur on a semi-annual basis and will last for the duration of the permit. Eight
chlorophenols include the following: 3-chlorophenol; 4-chlorophenol; 2,3-dichlorophenol; 2,5-dichlorophenol; 2,6-dichlorophenol; 3,4-
dichlorophenol; 2,3,4,6-tetrachlorophenol and 3-methyl-6-chlorophenol.
4 Acute Toxicity (Fathead Minnow 24 hour) Monitoring: 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 rag layer.

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ROAD CLASSIFICATION
PRIMARY HIGHWAY MPRODUDTY ROAD HARD OR
HARDSURFACE
SECONDARY HIGHWAY
HARDSURFACE UNIMPROVED ROAD
Latitude _36004M"
Longitude 79055'56"
Map # C19SW
Sub -basin 030602
Stream Class WS-III NSW
Discharge Class
Stormwater
Receiving Stream UT Horsepen Creek
Design 0 Variable
Permit expires 01 /31 /01
CONTOUR INTERVAL 10 FEET
QUAD LOCATION Amoco Oil Company
Greensboro Terminal
zr�: NCO003671
Guilford County

Part III Permit No. NC0003671
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 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 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.

PART IV
ANNUAL ADMINISTERING AND COMPLIANCE MONITORING FEE REQUIREMENTS
A. The permittee must pay the annual administering and compliance monitoring fee within 30
(thirty) days after being billed by the Division. Failure to pay the fee in a timely manner in
accordance with 15A NCAC 2H .0105(b)(4) may cause this Division to initiate action to
revoke the permit.