NC0074705_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
August 2, 1996
Ms. Cindy Mueller
Senior Scientist, Environmental
Gulf Coast Business Unit
Conoco, Incorporated
One Lakeshore Drive, Suite 1000
Lake Charles, Louisiana 70629
IL
�EHNF1
Subject: NPDES Permit Issuance
Permit No. NC0074705
Paw Creek Terminal
Mecklenburg County
Dear Ms. Mueller:
In accordance with the application for discharge permit received on March 4, 1996, the Division is
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 U.S.
Environmental Protection Agency dated December 6, 1983.
Xylene monitoring has been included in the permit and should be conducted on a semi-annual basis as
recommended by the Hearing Officer.
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 redeipt 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 a demand is made, this permit shall be final and binding.
Please take notice that 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 Water Quality or permits required by the Division of Land Resources, Coastal Area Management Act, or
any other Federal or Local governmental permits may be required.
If you have any questions or need additional information, please contact Mr. Mark McIntire, telephone
number [phone], extension 553.
Sincerely,
Original Signed By
A Preston Howard, Jr.
A. Preston Howard, Jr., P.E.
cc: Central Files
Mr. Roosevelt Childress, EPA
Mooresville Regional Office, Water Quality
Permits and Engineering Unit'
Mecklenburg County Environmental Protection
Facility Assessment Unit
Aquatic Survey and Toxicology Unit
P.O. Box29535, Raleigh, North Carolina 27626.0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 100% post -consumer paper

Permit No. NCO074705
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,
Conoco, Inc.
is hereby authorized to discharge wastewater from a facility located at
Charlotte Products Terminal
NCSR 1619
north of Charlotte
Mecklenburg County
to receiving waters designated as an unnamed tributary to Paw Creek 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
A. Preston Howard, !r
A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit No. NC0074705
SUPPLEMENT TO PERMIT COVER SHEET
Conoco, Inc.
is hereby authorized to:
I. Continue to operate an oil/water separator, a carbon filter and a holding tank for treating water
from the petroleum loading racks and continue to discharge stormwater and hydrostatic test
water from the diked containment areas through outfall 002 at a facility located at Charlotte
Products Terminal, NCSR 1619, north of Charlotte, 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 Paw Creek which is classified Class C waters in the Catawba River Basin.

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Stream
Discharge
Receiving
Design O
DAD CLASSIFICATION
LIGHT -DUTY ROAD, HARD OR
— IMPROVED SURFACE 1 =
Sub -basin
SCALE 1:24 000
0 1 MILE
0 7000 FEET
1 0 1 KILOMETER
CONTOUR INTERVAL 10 FEET
QUAD LOCATION Conoco, Inc.
Stor ater
NCO074705
UT toaw Creek Mecklenburg County
Permit expires 8/31/01 Terminal Tank Facility

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Permit No. NCO074705
_1.
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(s) serial number 001. Such discharges shall be limited and monitored by the Permittee as
specified below:
Effluent Characteristics
Flow t
Total Suspended Solids
Oil and Grease2
EPA Methods 624/625
Xylene
Acute Toxicity -
Discharge Limitations
Monthly A4 Weekly Avp, Dail.
45.0 mg/1
Monitoring Reauirements
Measurement
Sample
Sample
Frequency
Type
Location
Monthly
1
Effluent
Monthly
Grab
Effluent
Monthly
Grab
Effluent
Semi-annually Grab Effluent
Semi-annually Grab Effluent
Annually Grab Effluent
Footno(es:
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 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 benzene concentration is less than 71.4 ug/I and toluene
concentration is less than 11 ug/1.

•
Part III Permit No. NC0074705
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 permttee 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
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 North
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.

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SOC PRIORITY PROJECT: Yes No X
To: Permits and Engineering Unit
Water Quality Section
Attention: Mark D. McIntire
Date: March 21, 1996
NPDES STAFF REPORT AND RECOMMENDATION
County: Mecklenburg
Permit No. NCO074705
MRO No. 96-064
PART I - GENERAL INFORMATION
1. Facility and Address: Conoco -Charlotte Products Terminal
Gulf Coast Business Unit
Conoco, Inc.
One Lakeshore Drive, Suit 1000
Lake Charles, Louisiana 70629
2. Date of Investigation: 03-21-96
3. Report Prepared By: G. T. Chen
4. Persons Contacted and Telephone Number: Mr. Mark. Bowen,
Terminal Manager, [phone]
s. Directions to Site: From the junction of Freedom Drive
(Highway 27) and Old Mount Holly Road (SR 1619) in northwest
Charlotte, Mecklenburg County, travel east on SR 1619 about
0.75 mile. Conoco -Charlotte Products Terminal is located on
the right (south) side of the road.
6. Discharge Point(s). List for all discharge points:
Latitude: 35° 16' 42" Longitude: 80° 55' 30"
Attach a U.S.G.S. map extract and indicate treatment facility
site and discharge point on map.
USGS Quad No.: F 15 SW USGS Quad Name: Mtn Island Lake
7. Site size and expansion are consistent with application?
Yes.
8. Topography (relationship to flood plain included): Sloping
south toward an unnamed tributary to Paw Creek at the rate of
3 to 5%. The site is not in a flood plain.

9. Location of nearest dwelling: No dwellings within 1,000 feet
of the site.
10. Receiving stream or affected surface waters: Unnamed
tributary to Paw Creek
a. Classification: C
b. River Basin and Subbasin No.: 03-08-34
C. Describe receiving stream features and pertinent
downstream uses: The receiving stream is a narrow and
shallow drainage ditch. Some flow was noted during the
inspection. Downstream users are not known.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted: Intermittent
Discharge ('Ultimate Design Capacity)
b. What is the current permitted capacity of the wastewater
treatment facility? Intermittent Discharge.
C. Actual treatment capacity of the current facility
(current design capacity)? Intermittent Discharge.
d. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two
years: None.
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities: Existing
facilities consist of containment dykes, an oil/water
separator, a carbon filter, and a wastewater storage
tank.
f. Please provide a description of proposed wastewater
treatment facilities: N/A.
g. Possible toxic impacts to surface waters: Those
typically associated with bulk storage facilities.
h. Pretreatment Program (POTWs only): N/A.
2. Residuals handling and utilization/disposal scheme: No solid
waste generated from this facility.
a. If residuals are being land applied, please specify DEM
Permit No.: N/A.
Residuals Contractor: N/A.
NPDES Permit Staff Report
Version 10/92.
Page 2

Telephone No.: N/A.
b. Residuals Stabilization: PSRP: N/A.
RFRP: N/A.
Other: N/A.
C. Landfill: N/A.
d. Other disposal/utilization scheme (specify): N/A.
3. Treatment plant classification (attach completed rating
sheet): Class I, see attached rating sheet.
4. SIC Code(s): 5171
Wastewater Code(s):
Primary: 39 Secondary: 73
Main Treatment Unit Code: 53000
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant
Funds or are any public monies involved (municipals only)?
N/A.
2. Special monitoring or limitations (including toxicity)
requests: None.
3. Important SOC, JOC or Compliance Schedule dates: (please
indicate) N/A.
4. Alternative Analysis Evaluation: Has the facility evaluated
all of the non -discharge options available. Please provide
regional perspective for each option evaluated.
Spray Irrigation: N/A.
Connection to Regional Sewer System: N/A.
Subsurface: N/A.
Other Disposal Options: N/A.
5. Air Quality and/or Groundwater concerns or hazardous materials
utilized at this facility that may impact water quality, air
quality or groundwater? There are no known air quality and/or
groundwater concerns. The facility stores a variety of fuel
.oil typically associated with bulk storage facilities.
NPDES Permit Staff Report
Version 10/92
Page 3

6. Other Special Items: None.
PART IV - EVALUATION AND RECOMMENDATIONS
It is recommended that the. subject Permit be renewed as
requested.
sk�� , " 66,4�.
Signature orvReport rreparer
Water Quality Reg
Date
f
1-Supervisor
—s /?, -1, /,� 6
NPDES Permit Staff Report
Version 10/92
Page 4