NC0082970_Permit Issuance_19960624

o / d Fe__L 1I f
State of North Carolina 'T
Department of Environment,
Health and Natural Resources LT. •
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary E'----' N
A. Preston Howard, Jr., P.E., Director
June 24, 1996
Mr. G. M. Allen
Manager, Safety & Environmental Compliance
Colonial Terminals, Inc.
North Lathrop Avenue
Savannah, Georgia 31402-0576
Subject: Permit Issuance
Permit No. N0082970
CTI / Wilmington Terminal
New Hanover County
Dear Mr: Allen:
In accordance with the application for discharge permit received on December 18,
1995, 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.
The EPA test method 624/625 requirement remains in this permit as it is the most
exhaustive of the test methods. Though the constituents tested for in methods 602 and 610
are also quantified under methods 624 and 625, the latter two methods will provide results
for additional parameters not included in the other test methods.
I appreciate your letter to Mr. Mark McIntire of my staff regarding the requirements
contained in your draft permit. The Division has established minimum requirements for
large tank farms across North Carolina which store petroleum -related products.
Development of this permitting strategy was based on data review, site visits, internal
discussions, and information submitted by the tank farm facilities. Beyond these minimum
requirements, the Division reviews each request for a permit based on the past performance
of the specific site in question. For example, benzene and toluene have been documented
in CTI's stormwater discharge at levels which require more frequent monitoring. On the
other hand, toxicity testing has been reduced to annual monitoring based on past test
results.
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.
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

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 Environmental Management 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. -
David K Goodrich
A. Preston Howard, Jr., P.E.
cc: Central Files
Wilmington Regional Office, Water Quality
Mr. Roosevelt Childress, EPA
Permits and Engineering Unit
Facility Assessment Unit
Aquatic Survey and Toxicology Unit

Permit No. NCO082970
STATE OF NORTH CAROLI NA
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,
CTI of North Carolina, Inc.
is hereby authorized to discharge wastewater from a facility located at
CTI of North Carolina, Inc.
1002 South Front Street
Wilmington, North Carolina
New Hanover County
to receiving waters designated as the Cape Fear River 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.
This permit shall become effective August 1, 1996
This permit and authorization to discharge shall expire at midnight on June 30, 2001
Signed this day June 24, 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. NC0082970
SUPPLEMENT TO PERMT COVER SHEET
CTI of North Carolina, Inc.
is hereby authorized to:
1. Continue to discharge stormwater and tank condensate from a treatment system consisting of a
gravity type oil/water separator with a 1000 gallon product holding tank (outfall 001) and
continue to discharge treated groundwater from a 14,400 GPD treatment facility consisting of an
oil/water separator, an air stripper, two particulate filters, and activated carbon (outfall 002) from
a facility located at CTI of North Carolina, Inc., 1002 South Front Street, Wilmington, New
Hanover County (See Part III of this Permit), and
2. Discharge from said treatment works at the location specified on the attached map into Cape Fear
River which is classified Class SC waters in the Cape Fear River Basin.

ROAD CLASSIFICATION
PRIMARY HIGHWAY LIGH*-DUTY ROAD. HARD OR
HARDSURFACE IMPROVEDSURFACE
SECONDARY HIGHWAY
HARDSURFACE C=3111111111111=1 UNIMRROVED ROAD
ide 34°13'16° Longitude 77157'03"
# K27NW Sub -basin 030834
Stream Class SC
Discharge Class Storm/Groundwater
Receiving Stream Cape Fear River
Design 0 14400GPD Permit expires /6 30/01
CONTOUR INTERVAL 5 FEET
QUAD LOCATION
CTI of NC, Inc.
NCO082970
New Hanover County
Tank Farm

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Permit No. NCO082970
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge
-1A stuff water from outfall(s) serial number 001. Such discharges shall be limited and monitored by the Permittee as specified below:
Effluent Characteristics Discharge Limitations Monitoring Requirements
Flow l
Total Suspended Solids
Oil and Grease2
EPA Methods 624/6253 O/,-_
Benzene \ 0 /
Toluene
Acute Toxicity4
Monthly Avg. Weekly Avg. Daily Max.
45.0 mg/l
--7 45.0. mg/1
Measurement
Sample
Sample
Frequency
Type
Location
Monthly
I
Effluent
Monthly
Grab
Effluent
Monthly
Grab
Effluent
Semi-annually
Grab
Effluent
Monthly
Grab
Effluent
Monthly
Grab
Effluent
Annually
Grab
Effluent
Footnotes:
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 See Part III, Condition G.
4 Acute Toxicit
y (Fathead Minnow, 24-hour) Monitoring, Epjsddic, 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/l and toluene
concentration is less than 11 ug/l.
f

A: (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL
Permit No. NCO082970
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from outfall
serial number 002. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics Discharge Limitations
Monitoring
Requirements
Lbs/day Units (specify)
Measurement-
Sample
*Sample
Mon. AVM. Daily Max Mon, Avgs Daily Max.
Frequency/
Type
Location
Flow" 0.0144 MGD
Continuous
RemrdinT
E
Oil and Grease 30.0 mg/I 60.0 mg/l
2/Month
Grab
E
Benzene
Quarterly
Grab
E
Toluene
Quarterly
Grab
E
Ethlybenzene
Quarterly
Grab
E
Xylene
Quarterly
Grab
E
Naphthalene
Quarterly
Grab
E
Methyl Tert Butyl Ether
Quarterly
Grab
E
* Sample location: E - Effluent
** All volumes of wastewater leaving the facility shall be monitored. If continuous flow monitoring is not feasible, then the discharger shall
record the approximate time that discharge began and ended, along with the instantaneous flow at the time of the effluent sampling.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Part III
E. ACUTE TOXICITY MONITORING (ANNUAL)
NCO082970
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 -I (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.
F. TOXICITY REOPENER CONDITION
This permit shall be modified, or revoked and reissued to incorporate toxicity limitations and
monitoring requirements in the event toxicity testing or other studies conducted on the effluent or
receiving stream indicate that detrimental effects may be expected in the receiving stream as a result
of this discharge.

SOC PRIORITY PROJECT: No
e
To: Permits and Engineering Unit
Water Quality Section
Attention: Susan Robson
(Review Engineer)
Date: April 8, 1996
NPDES STAFF REPORT AND RECOMMENDATION
County: New Hanover
Permit No. NCO082970
PART I - GENERAL INFORMATION
1. Facility and Address:
Local: CTI Terminal Corporate: CTI of North Carolina,Inc.
1002 South Front Street Post Office Box 576
Wilmington, North Carolina Savannah, Georgia
28401 31402-0576
2. Date of Investigation: March 20, 1996
3. Report Prepared by: Jim Bushardt
4. Persons Contacted and Telephone Number: Ron Hart
[phone]
5. Directions to Site: The site is located at 1002 South Front
Street in Wilmington.
6. Discharge Points: -
Latitude: 3401311611 Longitude: 77057103/1
U.S.G.S. Quad No: K27NW U.S.G.S. Quad Name: Wilmington, N.C.
70 Site size and expansion area consistent with application 7
Yes
8. Topography: The site* slopes downward toward the river and
extends within the 100 year flood plain.
9. Location of nearest dwelling: The closest dwelling is located
approximately 1000 feet from the treatment system.

10. Receiving stream or affected surface waters: Cape Fear River
a. Classification: Class "SC" waters
b. River Basin and Subbasin No.: 03 06 17
C. Describe receiving stream features and pertinent
downstream uses: High velocity, high flow volume
stream used for boating, fishing, hunting, and
commercial shipping.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
Pertinent Information
a. Volume of wastewater to be permitted and waste stream
identification:
Variable storm -related flows (Outfall 001)
Boiler blowdown (Outfall 001)
0.0144 MGD groundwater remediation (Outfall 002).
b. What is the current permitted capacity of the wastewater
treatment facility? The existing facility receives and
treats (via oil/water separation) storm -related flow from
containment areas at variable volumes, boiler blowdown,
and 10 gpm groundwater recovery and treatment.
C. Actual treatment capacity of the current facility?
Unknown for Outfall 001, 10 gpm for Outfall 002.
d. Dates and construction activities allowed by previous
Authorizations to Construct issued in the previous two
years: February 24, 1995 - A to C for groundwater
recovery and treatment system.
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities: The
existing facilities include a gravity type oil/water
separator with a mechanical skimmer and 1000 gallon
product tank for Outfall 001. Groundwater treatment
system information is as follows: Influent flow will
enter the treatment system from a recovery trench and a
recovery well. The system includes a PECO 10 gpm
oil/water separator, 280 gallon product tank,
intermediate sump tank and 20 gpm transfer pump,
Pollution Equipment Company 16 gpm (20 ft. length by 12
inch diameter) packed tower type air stripper equipped
with a 214 gpm blower, intermediate sump tank and 20 gpm
transfer pump, 50 gpm Rosedale bag filter, and four 10
gpm Aquatec carbon filters arranged in two parallel paths
with each path containing two units in series. The system
also includes a Hersey turbine type flow meter/totalizer
and alarms and logic .circuitry to terminate influent
pumping operations during high -high water conditions.
f. Please provide a description of proposed wastewater
treatment facilities: Nothing proposed.

M
g. Possible toxic impacts to surface waters: Petroleum
contaminated effluent may be release to a large receiving
stream.
h. Pretreatment Program: Not a POTW.
2. Residuals handling and utilization/disposal scheme: The spent
carbon will be returned to the supplier. The spent sediment
filters and sludge will be barreled and staged on -site for
future disposal via State requirements. Recovered product will
be blended with terminal bulk storage products.
3. Treatment plant classification: Class 1
4. SIC Codes: 5171
Wastewater Code: 37 (primary) & 66 (secondary)
Main Treatment Unit Code: 53008
Groundwater Treatment system: 56008
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant
Funds or are any public monies involved? No
2. Special monitoring or limitations (including toxicity)
requests: It is requested that priority pollutants be removed
from the current monitoring requirements. This facility is not
considered to be a primary industry per 40 CFR, Part 122.
Except for the APAM requirement, the current monitoring plan
appears to be adequate. The Outfall 001 exhibited the
following results for June 1995:
pH - 7.7/6/4, oil & grease - 1.0/1.0 mg/l, TSS - 12.0/29.0
mg/l, lead - .006ug/l, benzene - 11.3ug/l, toluene - 5.94
ug/1, e.benzene - 3.24 ug/l, xylene - 44.8 ug/l, MTBE - 5.0
ug/l, naphthalene - 20.0, a.toxicity - >100% (pass).
The Outfall 002 exhibited the following results for December
1995: pH - 7.6/7.3, oil & grease - 2.0/1.0 mg/l, BTEX & MTBE
& naphthalene - all <1.0 ug/l.
The facility can not meet pH limits for Outfall 001. The
Region has performed some testing to verify sampling procedures.
Based on the testing and inspection of the facility, the writer can
not determine the causes for the pH anomaly other than natural
conditions. The pH was measured within the influent flow to the
groundwater remediation system and the effluent chamber of
oil/water separator (Outfall 001). The results were 6.26 and 6.64,
respectively. Considering that the stormwater routed to Outfall 001
and the possible infiltration of groundwater into the collection
system may the causes for the pH anomaly, and considering the large
flow volume of the river at this discharge point, it is recommended
the minimum pH limit for Outfall 001 be changed to 6.0 from the
standard 6.8 for "SC" classified waters. It would not be practical
to require treatment for these naturally occurring conditions. The
aeration and carbon adsorption appear to be elevating pH within
Outfall 002 to acceptable levels.

m
3. Important SOC, JOC or Compliance Schedule dates: None
Alternatives Analyses Evaluation: Has the facility evaluated
all of the non -discharge options available? No; Please
provide regional perspective for each option evaluated.
Spray Irrigation:. There is insufficient area available.
Connection to Regional Sewer System: The receiving stream is
not considered to be an environmentally sensitive river at the
proposed discharge location due to it's large flow volume and
the location of many discharge outfalls. The City of
Wilmington does not allow connection of such systems to the
public sewer unless discharge is to an environmentally
sensitive stream.
Subsurface: The oil terminal/storage facility has many buried
pipes on the higher elevations and high groundwater table on
lower elevations. Both situations would interfere with a
subsurface disposal operation. A subsurface disposal operation
may move the contamination plume off site.
Other disposal options: None explored.
5. Other Special Items: None
PART IV -- EVALUATION AND RECOMMENDATIONS
This report is being prepared based on a request for permit
renewal by the Permittee. The terminal is equipped with an
oil/water separator with mechanical skimmer and product tank for
receiving storm -related flows from impervious areas where product
loading operations occur and from containment dike areas. Boiler
blowdown is also directed into Outfall 001. Groundwater remediation
is also performed on site. The groundwater remediation activity
concerns pumping contaminated groundwater from a recovery trench at
a rate of 2.5 gpm, and from a recovery well at an approximate rate
of 7.5 gpm. The groundwater treatment system discharges into the
Cape Fear River via separate outfall pipe. The activity was not
suggested to be covered by general permit because the terminal's
main storage materials are No.2 and No. 6 fuel oil. Although not
within the current inventory, gasoline may also be stored at the
facility. Chemical analyses available at the Regional Office
indicate the presence of both volatile and semi -volatile petroleum
constituents in the area of the recovery trench and recovery well.

It is recommended that NPDES Permit No. NC0082970 be modified
and placed at public notice. If no significant adverse public
comment is received, it is recommended that NPDES Permit No.
NC0082970 be reissued to CTI of North Carolina, Inc. in accordance
with the basinwide permitting strategy.
9�n(/mil
S' nature of report preparer
Water Quality Regional Supervisor
ENCLOSURE
JB:CTI.496
cc: Wilmington WQ Files
Wilmington GW Files
Central Files
Technical Support Branch
IJ
Date
Date