NC0031038_Permit (Issuance)_19960802

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
Mr. C. W. Crider
Colonial Pipeline Company
Post Office Box 87
Paw Creek, North Carolina 28130
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August 2, 1996
Subject: NPDES Permit Issuance
Permit No. NC0031038
Colonial Pipeline Co.
Charlotte Facility
Mecklenburg County
Dear Mr. Crider:
In accordance with your application for discharge permit received on March 5, 1996, we are
forwarding herewith the subject state - 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.
In response to oil terminals' comments pertaining to the chlorophenol monitoring requirements
in the draft permits, the Division held a teleconference with representatives from the oil terminals and
their laboratories. The oil terminals' representatives had the following concerns: (1) Why was there a
requirement to monitor for eight individual chlorophenols in addition to those specified in EPA Method
625; and (2) What is the proper laboratory procedure to analyze for these eight chlorophenols?
After some additional data review, research, and discussion, two determinations were made.
First, although all chlorophenols have the potential to cause taste and odor problems in drinking
water supplies and tainting of fish tissue, the eight chlorophenols not covered by EPA Method 625
are not considered to be carcinogens. Second, certain chlorophenolic compounds are likely to form
first. This is significant because certain parameters can be used to "screen" the stormwater discharge
for the presence of chlorophenols. Specifically, the five chlorophenols included in EPA Method 625
can be used as indicators of all chlorophenols because these five compounds would be the first to
form when chlorine reacts with phenol.
Therefore, EPA Method 625 will be used as an initial screen. If no chlorophenols are
detected, no additional monitoring will be required. However, if one or more chlorophenols are
detected at concentrations greater than 50 µgf1, then the oil terminal would be required to monitor for
the eight additional chlorophenols beginning with the next scheduled monitoring event and continue
to monitor until the permit expired. The additional chlorophenol monitoring would include
identifying and quantifying all chlorophenols present in the sample(s).
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

August 2, 1996
NPDES Permit Issuance
Permit No. NC0031038
Colonial Pipeline Co. / Charlotte Facility
Page 2
An additional change was made to your permit since the draft copy was sent to you, the
Benzene limit of 1.19 ug/1 was removed from the effluent limitations page.
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 notice 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. The Division of Water
Quality 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 Quality 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 Ms. Mary Cabe at telephone
number [phone], extension 518.
Sincerely,
Original Signed By
A. Preston Howard, Jr.
A. Preston Howard, Jr., P. E.
cc: Central Files
Mooresville Regional Office, Water Quality Section
Mecklenburg County Health Department
Roosevelt Childress, EPA
Permits and Engineering Unit
Facility Assessment Unit
Aquatic Survey and Toxicology Unit

Permit No. NC0031038
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
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,
Colonial Pipeline Company
is hereby authorized to discharge wastewater from a facility located at
Charlotte Delivery Facility
7524 Kenstead Circle
Paw Creek
Mecklenburg County
to receiving waters designated as an unnamed tributary to Gum Branch in 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, 1996.
This permit and authorization to discharge shall expire at midnight on August 31, 2001.
Signed this day August 2, 1996.
Original Signed By
ii►. Preston Howard, Jr.
A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission

4 .
4
Permit No. NC0031038
SUPPLEMENT TO PERMIT COVER SHEET
Colonial Pipeline Company
is hereby authorized to:
1. Continue to operate wastewater treatment system consisting of an oiVwater separator and a
sedimentation basin located at Charlotte Delivery Facility, 7524 Kenstead Circle, Paw Creek,
Mecklenburg County (See Part III of this Permit), and
2. Discharge from said treatment works at the location specified on the attached map into an
unnamed tributary to Gum Branch which is classified Class WS-IV waters in the Catawba River
Basin.

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ROAD CLASSIFICATION
PRIMARY HIGHWAY
HARD SURFACE
SECONDARY HIGHWAY
HARD SURFACE
MPRROVDEO SUURRFFA EADi ARD OR
UNIMPROVED ROAD
Latitude 35°17'15" Longitude 80°56'05"
Map # F15SW Sub -basin 030834
Stream Class WS-IV
Discharge Class Industrial / Stormwater
Receiving Stream Gum Branch / Catawba River
Design Q Variable Permit expires 8/31/01
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Colonial Pipeline - Paw Creek
N C0031038
Mecklenburg County
WWTP

A. ( ). EFFLUENT L11V11' L'A 1'IUN S AND MUN r1'UR1N c.; R I QU 11(EMEN 1'S Permit No. N U)O31 U3 ii
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge
stormwater, washdown slab water, prover loop calibration water, and hydrostatic test water from the pond outfall, serial number 001. Such
discharge shall be limited and monitored by the Permittee as specified below:
Effluent Characteristics Discharge Limitations Monitoring Requirements
Measurement Sample Sample
Monthly Avg= Weekly Avg. Daily Max. Frequency 'Lug_Location
Flows Monthly 1 Effluent
Total Suspended Solids 45.0 mg/1 Monthly Grab Effluent
Oil and Grease2 Monthly Grab Effluent
Phenol Monthly Grab Effluent
Benzene Monthly Grab Effluent
Toluene 11.0 ug/1 Monthly Grab Effluent
Xylene Semi-annually Grab Effluent
EPA Methods 624/6253 Semi-annually Grab Effluent
Acute Toxicity4 Annually Grab Effluent
1 Where no measurable discharge occurs, "no discharge" should be clearly noted on the submitted monthly discharge monitoring report.
Flow may be 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 facilities 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) Base flow on pump logs.
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 50 141, the
permittee will be required to analyze for the eight chlorophenols (listed below) in addition to EPA Method 625. This additional required monitoring will
begin with the permittee's next scheduled monitoring event, occur on a semi-annual basis, and will last for the duration of the permit. The 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, Annual, 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.
There shall be no direct discharge of tank contents following hydrostatic testing unless the benzene
concentrarion is less than 1.19 ug/I and toluene concentration is less than 11 ug/l.

Part DI Permit No. NC0031038
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, DWQ Form AT-1 (original) is to
be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of Water Quality
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 Nonh
Carolina Division of Water Quality 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.