NCS000003_FINAL PERMIT_19991112

STORMWATER-DIVISION-CODING-SHEET
PERMIT NO.
VI.G< D,06b �
DOC TYPED
FINAL PERMIT
❑ MONITORING INFO
❑ APPLICATION
❑ COMPLIANCE
❑ OTHER
DOC DATE
❑
YYYYM M DD

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
November.12, 1999
Mr. Gene F. Renzaglia
Occidental Chemical Corp.
Post Office Box 368
Castle Hayne, North Carolina 28429
1
A& a
�L Will,
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: Permit No. NCS000003
Occidental Chemical Corp.
New Hanover County
Dear Mr. Renzaglia:
In response to your renewal application for continued coverage under NPDES stormwater
permit NCS000003, the Division of Water Quality (DWQ) 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
US Environmental Protection agency dated December 6, 1983.
Please note that the Division has revised the analytical monitoring strategy for individual
stormwater permits. Based on a review of the permit monitoring data received to date, the
analytical monitoring measurement frequencies have been changed and cut-off concentrations
have been removed. These changes will be implemented for all second term individual
stormwater permits with analytical monitoring requirements. For those permits with analytical
monitoring requirements, Part II - Monitoring, Controls, and Limitations for Permitted
Discharges has been modified to reflect the change in monitoring strategy.
The qualitative monitoring strategy remains the same as the first term of the permit.
Please note that the semi-annual qualitative monitoring is a requirement of the permit. Failure to
complete the monitoring as required is a violation of the permit and any permit noncompliance
constitutes a violation of the Clean Water Act. Reference Part II, Section A, Item 2 "Duty to
comply", Item 9 "Penalties for Tampering " and Item 10 'Penalties for Falsification of Reports"
of your permit for further information.
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 III, B.2. addresses the requirements
to be followed in case of change in ownership or control of this discharge.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

Page 2
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 Tony Evans at telephone
number 919/733-5083 ext. 584.
Sincerely,
jPtfti-&1'}1,101
for Kerr T. Stevens
cc: Mr. Roger O. Pfaff, EPA
Wilmington Regional Office
Central Files
Stormwater and General Permits Unit

STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE STORMWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions 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,
Occidental Chemical Company
is hereby authorized to discharge stormwater from a facility located at
Occidental Chemical Company
5408 Holly Shelter Road
Castle Hayne. NC
New Hanover County
to receiving waters designated as Northeast Cape Fear River, a Class B Sw stream, in the Cape Fear River Basin
in accordance with the discharge limitations. monitoring requirements, and other conditions set forth in Parts t, 11, 11I, IV, V
and VI hereof.
This permit shall become effective December t. 1999
This permit and the authorization to discharge shall expire at midnight on November 30, 2004.
Signed this day November 12, t999.
UA�Z �
,for Kerr T. Stevens. Director
Division of Water Quality
By the Authority of the Environmental Management Commission

Permit No. NCS006003
TABLE OF CONTENTS
PART 1 INTRODUCTION
Section A: Individual Permit Coverage
Section B: Permitted Activities
Section C: Location Map
PART II MONITORING, CONTROLS, AND LIMITATIONS FOR PERMITTED
DISCHARGES
Section A:
Stormwater Pollution Prevention Plan
Section B:
Analytical Monitoring Requirements
Section C:
Qualitative Monitoring Requirements
Section D:
On -Site Vehicle Maintenance Monitoring Requirements
PART III STANDARD CONDITIONS
Section A: Compliance
and Liability
I.
Compliance Schedule
2.
Duty to Comply
3.
Duty to Mitigate
4.
Civil and Criminal Liability
5.
Oil and Hazardous Substance Liability
6.
Property Rights
7.
Severability
S.
Duty to Provide Information
9.
Penalties for Tampering
10.
Penalties for Falsification of Reports
Section B: General Conditions
1. Individual Permit Expiration
2. Transfers

Permit No. NCS000003
3. Signatory Requirements
4. Individual Permit Modification, Revocation and Re1SSltance, or
Termination
5. Permit Actions
Section C: Operation and Maintenance of Pollution Controls
I. Proper Operation and Maintenance
2. Need to Halt or Reduce Not a Defense
3. Bypassing of Stormwater Control Facilities
Section D: Monitoring and Records
I.
Representative Sampling
2.
Recording Results
3.
Flow Measurements
4.
Test Procedures
5.
Representative Outfall
6.
Records Retention
7.
Inspection and Entry
Section E: Reporting
Requirements
1.
Discharge Monitoring Reports
2.
Submitting Reports
3.
Availability of Reports
4.
Non-Stormwater Discharges
5.
Planned Changes
6.
Anticipated Noncompliance
7.
Bypass
S.
Twenty-four 1-101.11- Reporting
9.
Other Noncompliance
10.
Other Information
PART IV LIMITATIONS REOPENER
PART V ADMINISTERING AND COMPLIANCE MONITORING FEE
REQUIREMENTS
PART VI DEFINITIONS

Permit No. NCS006003
PART I INTRODUCTION
SECTION A: INDIVIDUAL PERMIT COVERAGE
During the period beginning on the effective date of the permit and lasting until expiration, the
permittee is authorized to discharge stormwater associated with industrial activity. Such
discharges shall be controlled, limited and monitored as specified in this permit.
SECTION B: PERMITTED ACTIVITIES
Until this permit expires or is modified or revoked, the permittee is authorized to discharge
stormwater to the surface waters of North Carolina or separate storm sewer system which has
been adequately treated and managed in accordance with the terms and conditions of this
individual permit. All discharges shall be in accordance with the conditions of this permit.
Any other point source discharge to surface waters of the state is prohibited unless it is an
allowable non-stormwater discharge or is covered by another permit, authorization or approval.
This permit does not relieve the permittee from responsibility for compliance with any other
applicable federal, state, or local law, rule, standard, ordinance, order, judgment, or decree.
Part t Page I of

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3P
230
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31'22'3
77
52'30" 1 1237
Mapped, edited, and published by the Geological Survey
Control by USGS, USCuGS. and North Carolina
Geodetic Survey
-Topograpny and ornophotcmosaic by photogrammetric
methods from aerial phctp_raphs taken April 1969
Field checked 1970
Polyronie project,,- 192: North. American datum
10,000 foot gn.: -ased on North Carolina coordinate system
1000"meter Universal Trer.s:erse Mercator grid ticks.
Zone 12, shown in blue
Part 1 Page 2 0l 2
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50'

Permit No. NCS000003
PART II MONITORING, CONTROLS, AND LIMITATIONS FOR
PERMITTED DISCHARGES
SECTION A: STORNIWATER POLLUTION PREVENTION PLAN
The permittee shall develop a Stormwater Pollution Prevention Plan, herein after referred to as
the Plan. This Plan shall be considered public information in accordance with Part III, Standard
Conditions, Section E, Paragraph 3 of this individual permit. The Plan shall include, at a
minimum, the following items:
Site Plan. The site plan shall provide a description of the physical facility and the
potential pollutant sources which may be expected to contribute to contamination of
stormwater discharges. The site plan shall contain the following:
(a) A general location map (USGS quadrangle map or appropriately drafted
equivalent map), showing the facility's location in relation to transportation
routes and surface waters, the name of the receiving water(s) to which the
stonmwater outfall(s) discharges, or if the discharge is to a municipal separate
storm sewer system, the name of the municipality and the ultimate receiving
waters, and accurate latitude and longitude of the point(s) of discharge.
(b) A narrative description of storage practices, loading and unloading activities,
Outdoor process areas, dust or particulate generating or control processes, and
waste disposal practices.
(c) A site map drawn to scale with the distance legend indicating location of
industrial activities (including storage of materials, disposal areas, process area
and loading and unloading areas), drainage structures, drainage areas for each
outfall and activities occurring in the drainage area, building locations, existing
BMPs and impervious surfaces, and the percentage of each drainage area that is
impervious. For each outfall, a narrative description of the potential pollutants
which could be expected to be present in the stormwater discharge.
(d) A list of significant spills or leaks of pollutants that have occurred at the facility
during the 3 previous years and any corrective actions taken to mitigate spill
impacts.
(e) Certification that the stormwater outfalls have been evaluated for the presence of
non-stormwater discharges. The certification statement will be signed in
accordance with the requirements found in Part 111, Standard Conditions, Section
B, Paragraph 3.
2. Stormwater Management Plan. The stormwater management plan shall contain a
narrative description of the materials management practices employed which control or
minimize the exposure of significant materials to stormwater, including structural and
Part H Page I oFG

Permit No. NCSOo0003
nonstructural measures. The stormwater management plan, at a minimum, shall
incorporate the following:
(a) Feasibility Study. A review of the technical and economic feasibility of changing
the methods of operations and/or storage practices to eliminate or reduce exposure
of materials and processes to stormwater. Wherever practical, the permittee shall
prevent exposure of all storage areas, material handling operations, and
manufacturing or fueling operations. In areas where elimination of exposure is
not practical, the stormwater management plan shall document the feasibility of
diverting the stormwater runoff away from areas of potential contamination.
(b) Secondary Containment Schedule. A schedule to provide secondary containment
for bulk storage of liquid materials, storage of Section 313 of Title Ill of the
Superfund Amendments and Reauthorization Act (SARA) water priority
chemicals, or storage of hazardous substances to prevent leaks and spills from
contaminating stormwater runoff. If the secondary containment devices are
connected directly to stormwater conveyance systems, the connection shall be
controlled by manually activated valves or other similar devices [which shall be
secured with a locking mechanism] and any stormwater that accumulates in the
containment area shall be at a minimum visually observed for color, foam, outfall
staining, visible sheens and dry weather flow, prior to release of the accumulated
stormwater. Accumulated stormwater shall be released if found to be
uncontaminated by the material stored within the containment area. Records
documenting the individual making the observation, the description of the
accumulated stormwater and the date and time of the release shall be kept for a
period of five years.
(c) BMP Summary. A narrative description shall be provided of Best Management
Practices (BMPs) to be considered such as, but not limited to, oil and grease
separation, debris control, vegetative filter strips, infiltration and stormwater
detention or retention, where necessary. The need for structural BMPs shall be
based on the assessment of potential of sources to contribute significant quantities
of pollutants to stormwater discharges and data collected through monitoring of
stormwater discharges.
3. Spill Prevention and Response Plan. The Spill Prevention and Response Plan (SPRP)
shall incorporate an assessment of potential pollutant sources based on a materials
inventory of the facility. Facility personnel (or team) responsible for implementing the
SPRP shall be identified. A responsible person shall be on -site at all times during facility
operations that have the potential to contaminate stormwater runoff through spills or
exposure of materials associated with the facility operations. The SPRP must be site
stormwater specific. Therefore, a SPCC plan may be a component of the SPRP, but may
not be sufficient to completely address the stormwater aspects of the SPRP. The common
elements of the SPCC with the SPRP may be incorporated by reference into the SPRP.
4. Preventative Maintenance and Good Housekeeping Program. A preventative
maintenance program shall be developed. The program shall document schedules of
inspections and maintenance activities of stormwater control systems, plant equipment
Part 11 Page 2 of 6

Permit No. NCS000003
and systems. Inspection of material handling areas and regular cleaning schedules of
these areas shall be incorporated into the program.
5. Employee Training. Training schedules shall be developed and training provided at a
minimum on an annual basis on proper spill response and cleanup procedures and
preventative maintenance activities for all personnel involved in any of the facility's
operations that have the potential to contaminate stormwater runoff. Facility personnel
(or team) responsible for implementing the training shall be identified.
6. Responsible Party. The Stormwater Pollution Prevention Plan shall identify a specific
position(s) responsible for the overall coordination, development, implementation, and
revision to the Plan. Responsibilities for all components of the Plan shall be documented
and position assignments provided.
7. Plan Amendment. The permittee shall amend the Plan whenever there is a change in
design, construction, operation, or maintenance which has a significant effect on the
potential for the discharge of pollutants to surface waters. The Stormwater Pollution
Prevention Plan shall be reviewed and updated on an annual basis.
The Director may notify the permittee when the Plan does not meet one or more of the
minimum requirements of the permit. Within 30 days of such notice, the permittee shall
submit a time schedule to the Director for modifying the Plan to meet minimum
requirements. The permittee shall provide certification in writing (in accordance with
Part IIt, Standard Conditions, Section B, Paragraph 3) to the Director that the changes
have been made.
8. Facility Inspection Program. Facilities are required to inspect all Stormwater systems on
at least a semiannual schedule, once in the fall (September -November) and once in the
spring (April - June). The inspection and any subsequent maintenance activities
performed shall be documented, recording date and time of inspection, individual(s)
making the inspection and a narrative description of the facility's stormwater control
systems, plant equipment and systems. Records of these inspections shall be
incorporated into the Stormwater Pollution Prevention Plan.
Stormwater discharge characteristic monitoring as required in Part II of this permit shall
be performed in addition to facility inspections.
9. Implementation. The permittee. shall document all monitoring, measurements,
inspections and maintenance activities and training provided to employees, including the
log of the sampling data and of activities taken to implement BMPs associated with the
industrial activities, including vehicle maintenance activities. Such documentation shall
be kept on -site for a period of five years and made available to the Director or his
authorized representative immediately upon request.
Part 11 Page 3 of 6

Permit No. NCS000003
SECTION B: ANALYTICAL MONITORING REQUIREMENTS
Dunne the period beginning on the effective date of the permit and lasting until expiration, the
permittee is authorized to discharge stormwater subject to the provisions of this permit.
Analytical monitoring of stormwater discharges shall be performed as specified below in Table
All analytical monitoring shall be performed during a representative storm event. The required
monitoring will result in a minimum of 4 analytical samplings being conducted over the term of
the permit at each stormwater discharge outfall (SDO). The permittee shall complete the
minimum 4 analytical samplings in accordance with the schedule specified below in Table 2.
Table 1. Analytical Monitoring Requirements
Discharge
Characteristics
Units
Measurement
Frequencyt
Sample
Type'-
Sample
Location3
Chromium
mg/I
Quarterly- 4" year
Grab
SDO
Nitrite -Nitrate Nitrogen
me/I
Quarterly- 4" year
Grab
SDO
Total Rainfall4
inches
Quarterly- 4" year
Event Duration4
minutes
Quarterly- 4" year
Total Flow4
MG
Quarterly- 4" year
SDO
Footnotes:
I Measurement Frequency: Once per quarter during the 4" year of the permit term. A year is defined as the 12
month period beginning on the month and day of issuance of the Permit. See Table 2 for schedule of monitoring_
periods.
2 If the stormwater runoff is controlled by a stormwater detention pond. a grab sample of the discharge from the
pond shall be collected within the first 30 minutes of discharge. If the detention pond discharges only in response
to a storm event exceeding a ten year design storm, then no analytical monitoring is required and only qualitative
monitoring shall be performed.
3 Sample Location: Samples shall be collected at each stormwater discharge outfall (SDO) unless representative
outfall status has been granted.
4 For each sampled representative storm event the total precipitation. storm duration. and total flow must be
monitored. Total flow, shall be either; (a) measured continuously, (b) calculated based on the amount of area
draining to the outfall, the amount of built -upon (impervious) area, and the total amount of rainfall. or (c)
estimated by the measurement of flow at 20 minute intervals during the rainfall event.
'fable 2 Monitoring schedule (for Permits issued l 1/01/99 only)
Monitoring period Sample Number
Start
End
Year 4 - I" quarter 1
November I. 2002
January 31, 2003
Year 4 - 2'" quarter 2
February I, 2003
April 30. 2003
Year 4 - 3Id quarter 3
May I, 2003
July 31. 2003
Year 4 - 4"' quarter 4
August I, 2003
October 31, 2003
Part 11 Page 4 of G

Permit No. NCS006003
SECTION C: QUALITATIVE MONITORING REQUIREMENTS
Qualitative monitoring requires a visual inspection of each stormwater outfall regardless of
representative outfall status and shall be performed as specified below in Table 3. Qualitative
monitoring is for the purpose of evaluating the effectiveness of the Stormwater Pollution
Prevention Plan (SPPP) and assessing new sources of stormwater pollution. No analytical tests
are required. Qualitative monitoring of stormwater outfalls does not need to be performed during
a representative storm event.
In the event an atypical condition is noted at a stormwater discharge outfall, the Permittee shall
document the suspected cause of the condition and any actions taken in response to the
discovery. This documentation will be maintained with the Stormwater Pollution Prevention
Plan.
All qualitative monitoring will be performed twice per year, once in the spring (April - June) and
once in the fall (September - November).
Table 3. Qualitative Monitoring Requirements
Discharge Characteristics
Frequency
Monitoring
Locationt
Color
Semi -Annual
SDO
Odor
Semi -Annual
SDO
Clarity
Semi -Annual
SDO
Floating Solids
Semi -Annual
SDO
Suspended Solids
Semi -Annual
SDO
Foam
Semi -Annual
SDO
Oil Sheen
Semi -Annual
SDO
Other obvious indicators
of stormwater Pollution
Semi -Annual
SDO
Footnotes:
I Monitorim, Location: Qualitative monitoring shall be performed at each stormwater discharge outfall (SDO)
regardless of* representative outfall status.
SECTION D: ON -SITE VEHICLE MAINTENANCE MONITORING REQUIREMENTS
Facilities which have any vehicle maintenance activity occurring on -site which uses more than
55 gallons of new motor oil per month when averaged over the calendar year shall perform
analytical monitoring as specified below in Table 4. This monitoring shall be performed at all
outfalls which discharge stormwater runoff from vehicle maintenance areas.
All analytical monitoring shall be performed during a representative storm event. The required
monitoring will result in a minimum of 4 analytical samplings being conducted over the term of
Part 11 Page 5 of 6

Permit No. NCS000003
the permit at each stormwater discharge outfall (SDO) which discharges stormwater runoff from
vehicle maintenance areas. The permittee shall complete the minimum 4analytical samplings in
accordance with the schedule specified in Table 2 (Part IL Section B).
Table 4. Analytical Monitoring Requirements for On -Site Vehicle Maintenance
Discharge Characteristics
Units
Measurement
Frequencyl
Sample
Type'-
Sample
Location3
H
standard
Quarterly- 4" year
Grab
SDO
Oil and Grease
mg/I
Quarterly- 4" year
Grab
SDO
Total suspended Solids
m /I
Quarterly-4" year
Grab
SDO
New Motor Oil Usage
gallons/month
Quarterlv-4" year
Estimate
Total Flow4
MG
Quarter] y-4"year
Grab
SDO
Footnotes:
I Measurement Frequency: Once per quarter during the 4" year of the permit term. A year is defined as the t2
month period beginning on the month and day of issuance of the Permit. See Table 2 for schedule of monitoring
periods.
If the stormwater runoff is controlled by a stormwater detention pond, a grab sample of the discharge from the
pond shall be collected within the first 30 minutes of discharge. If the detention pond discharges only in response
to a storm event exceeding a ten year design storm, then no analytical monitoring is required and only qualitative
monitoring_ shall be performed.
3 Sample Location: Samples shall be collected at each stormwater discharge outfall (SDO) that discharges
stormwater runoff from area(s) where vehicle maintenance activities occur.
4 Total Flow shall bc: (a) measured continuously. (b) calculated based on the amount of area draining to the outfall.
the amount of built -upon (impervious) area. and the total amount of rainfall, or (c) estimated by the measurement
of flow at 20 minute intervals during the rainfall event. Total precipitation and duration of the rainfall event
measured shall result from the sampled representative storm event.
Part 11 Pagc 0 of 6

Permit No. NCS000003
PART III STANDARD CONDITIONS FOR NPDES STORMWATER INDIVIDUAL
PERMITS
SECTION A: COMPLIANCE AND LIABILITY
Compliance Schedule
The permittee shall comply with Limitations and Controls specified for stormwater
discharges in accordance with the following schedule:
Existing Facilities: The Stormwater Pollution Prevention Plan shall be developed and
implemented within 12 months of the effective date of the initial permit and updated
thereafter on an annual basis. Secondary containment, as specified in Part II, Section A,
Paragraph 2(b) of this permit, shall be accomplished within 12 months of the effective
date of the initial permit issuance.
Proposed Facilities: The Stormwater Pollution Prevention Plan shall be developed and
implemented prior to the beginning of discharges from the operation of the industrial
activity and be updated thereafter on an annual basis. Secondary containment, as
specified in Part ❑, Section A, Paragraph 2(b) of this permit shall be accomplished prior
to the beginning of discharges from the operation of the industrial activity.
2. Duty to Complv
The permittee must comply with all conditions of this individual permit. Any permit
noncompliance constitutes a violation of the Clean Water Act and is grounds for
enforcement action: for permit termination, revocation and reissuance, or modification; or
denial of a permit upon renewal application.
a. The permittee shall comply with standards or prohibitions established under
section 307(a) of the Clean Water Act for toxic pollutants within the time
provided in the regulations that establish these standards or prohibitions, even if
the permit has not yet been modified to incorporate the requirement.
b. The Clean Water Act provides that any person who violates a permit condition is
subject to a civil penalty not to exceed $25,000 per day for each violation. Any
person who negligently violates any permit condition is subject to criminal
penalties of $2,500 to $25,000 per day of violation, or imprisonment for not more
than I year, or both. Any person who knowingly violates permit conditions is
subject to criminal penalties of $5,000 to $50,000 per day of violation, or
imprisonment for not more than 3 years, or both. Also, any person who violates a
permit condition may be assessed an administrative penalty not to exceed $10,000
per violation with the maximum amount not to exceed $125,000. [Ref: Section
309 of' the Federal Act 33 USC 1319 and 40 CFR 122.41(a).]
Part III Page I of 10 Pages

Permit No. NCSOOb003
C. Under state law, a daily civil penalty of not more than ten thousand dollars
($10,000) per violation may be assessed against any person who violates or fails
to act in accordance with the terms, conditions, or requirements of a permit. [Ref:
North Carolina General Statutes 143-215.6A]
d. Any person may be assessed an administrative penalty by the Director for
violating section 30 t, 302, 3067 307, 305, 3 tS, or 405 of the Act, or any permit
condition or limitation implementing any of such sections in a permit issued under
section 402 of the Act. Administrative penalties for Class I violations are not to
exceed $10,000 per violation, with the maximum amount of any Class I penalty
assessed not to exceed $25.000. Penalties for Class 11 violations are not to exceed
$10,000 per day for each day during which the violation continues, with the
maximum amount of any Class II penalty not to exceed $125,000.
3. Duty to Mitigate
The permittee shall take all reasonable steps to minimize or prevent any discharge in
violation of this individual permit which has a reasonable likelihood of adversely
affecting human health or the environment.
4. Civil and Criminal Liabilitv
Except as provided in Part 111, Section C of this permit regarding bypassing of stormwater
control facilities, nothing in this individual permit shall be construed to relieve the
permittee from any responsibilities, liabilities, or penalties for noncompliance pursuant to
NCGS 143-215.3, 143-215.6A, 143-215.613, 143-215.6C or Section 309 of the Federal Act,
33 USC 1319. Furthermore, the permittee is responsible for consequential damages, such
as fish kills, even though the responsibility for effective compliance may be temporarily
suspended.
5. Oil and Hazardous Substance Liability
Nothing in this individual permit shall be construed to preclude the institution of any
legal action or relieve the permittee from any responsibilities, liabilities, or penalties to
which the permittee is or may be subject to under NCGS 143-215.75 et seq. or Section 311
of the Federal Act, 33 USC 1321.
6. Property Rights
The issuance of' this individual permit does not convey any property rights in either real or
personal property, or any exclusive privileges, nor does it authorize any injury to private
property or any invasion of personal rights, nor any infringement of Federal, State or local
laws or regulations.
Part III Page 2 of 10 Pages

Permit No. NCS000003
7. Severability
The provisions of this individual permit are severable, and if any provision of this
individual permit, or the application of any provision of this individual permit to any
circumstances, is held invalid, the application of such provision to other circumstances,
and the remainder of this individual permit, shall not be affected thereby.
8. Duty to Provide Information
The permittee shall furnish to the Director, within a reasonable time, any information
which the Director may request to determine whether cause exists for modifying,
revoking and reissuing, or terminating the permit issued pursuant to this individual permit
or to determine compliance with this individual permit. The permittee shall also furnish
to the Director upon request, copies of records required to be kept by this individual
permit.
9. Penalties for Tampering
The Clean Water Act provides that any person who falsifies, tampers with, or knowingh
renders inaccurate, any monitoring device or method required to be maintained under this
individual permit shall, upon conviction, be punished by a fine of not more than $10,000
per violation, or by imprisonment for not more than two years per violation, or by both.
If a conviction of a person is for a violation committed after a first conviction of such
person under this paragraph, punishment is a fine of not more that $20,000 per day of
violation, or by imprisonment of not more than 4 years, or both.
10. Penalties for Falsification of Reports
The Clean Water Act provides that any person who knowingly makes any false statement,
representation, or certification in any record or other document submitted or required to
be maintained under this individual permit, including monitoring reports or reports of
compliance or noncompliance shall. upon conviction, be punished by a fine of not more
than $10,000 per violation, or by imprisonment for not more than two years per violation,
or by both.
SECTION B: GENERAL CONDITIONS
Individual Permit Expiration
The permittee is not authorized to discharge after the expiration date. In order to receive
automatic authorization to discharge beyond the expiration date, the permittee shall
submit forms and fees as are required by the agency authorized to issue permits no later
than 180 days prior to the expiration date. Any permittee that has not requested renewal
at least I80 days prior to expiration, or any permittee that does not have a permit after the
expiration and has not requested renewal at least t80 days prior to expiration, will be
Parr III Page 3 of 10 Paees

Permit No. NCS000003
subjected to enforcement procedures as provided in NCGS § t43-2 t53.6 and 33 USC
1251 et. seq.
2. Transfers
This permit is not transferable to any person except after notice to and approval by the
Director. The Director may require modification or revocation and reissuance of the
permit to change the name and incorporate such other requirements as may be necessary
under the Clean Water Act. Permittee is required to notify the Division in writing in the
event the permitted facility is sold or closed.
Signatory Requirements
All applications. reports, or information submitted to the Director shall be signed and
certified.
a. All applications to be covered under this individual permit shall be signed as
follows:
(1) For a corporation: by a responsible corporate officer. For the purpose of
this Section, a responsible corporate officer means: (a) a president,
secretary, treasurer or vice president of the corporation in charge of a
principal business function, or any other person who performs similar
policy or decision making functions for the corporation, or (b) the manager
of one or more manufacturing production or operating facilities employing
more than 250 persons or having gross annual sales or expenditures
exceeding 25 million (in second quarter 1980 dollars), if authority to sign
documents has been assigned or delegated to the manager in accordance
with corporate procedures.
(2) For a partnership or sole proprietorship: by a general partner or the
proprietor, respectively; or
(3) For a municipality, State, Federal, or other public agency: by either a
principal executive officer or ranking elected official.
b. All reports required by the individual permit and other information requested by
the Director shall be signed by a person described above or by a duty authorized
representative of that person. A person is a duly authorized representative only if:
(1) The authorization is made in writing by a person described above;
(2) The authorization specified either an individual or a position having
responsibility for the overall operation of the regulated facility or activity,
such as the position of plant manager, operator of a well or well field,
superintendent, a position of equivalent responsibility, or an individual or
position having overall responsibility for environmental matters for the
Part III Page 4 or 10 Pages

Permit No. NCS000003
company. (A duly authorized representative may thus be either a named
individual or any individual occupying a named position.): and
(3) The written authorization is submitted to the Director.
C. Any person signing a document under paragraphs a. or b. of this section shall
make the following certification:
1 certify, under penalty of law, that this document and all attachments were
prepared under my direction or supervision in accordance with a system designed
to assure that qualified personnel properly gather and evaluate the information
submitted. Based on my inquiry of the person or persons who manage the system.
or those persons directly responsible for gathering the information, the
information submitted is, to the best of my knowledge and belief, true, accurate.
and complete. I am aware that there are significant penalties for submitting false
information, including the possibility of fines and imprisonment for knowing
violations."
Individual Permit Modification. Revocation and Re15SUance, or Termination
The issuance of this individual permit does not prohibit the Director from reopening and
modifying the individual permit, revoking and reissuing the individual permit, or
terminating the individual permit as allowed by the laws, rules. and regulations contained
in Title 40, Code of Federal Regulations, Parts 122 and 123: Title 15A of the North
Carolina Administrative Code, Subchapter 2H .01W and North Carolina General Statute
143-215.1 et. al.
After public notice and opportunity for a hearing, the individual permit may be terminated
for cause. The filing of a request for a individual permit modification, revocation and
reissuance, or termination does not stay any individual permit condition. The permit shall
expire when the individual permit is terminated.
5. Permit Actions
The permit may be modified, revoked and reissued, or terminated for cause. The
notification of planned changes or anticipated noncompliance does not stay any
individual permit condition.
SECTION C: OPERATION AND MAINTENANCE OF POLLUTION CONTROLS
Proper Operation and Maintenance
The permittee shall at all times properly operate and maintain all facilities and systems of
treatment and control (and related appurtenances) which are installed or used by the
permittee to achieve compliance with the conditions of this individual permit. Proper
operation and maintenance also includes adequate laboratory controls and appropriate
Part III Page 5 of 10 Pages

Permit No. NCS000003
quality assurance procedures. This provision requires the operation of back-up or
auxiliary facilities or similar systems which are installed by a permittee only when the
operation is necessary to achieve compliance with the conditions of this individual
Permit.
Need to Halt or Reduce Not a Defense
It shall not be a defense for a permittee in an enforcement action that it would have been
necessary to halt or reduce the permitted activity in order to maintain compliance with
the condition of this individual permit.
3. Bypassing of Stormwater Control Facilities
Bypass is prohibited and the Director may take enforcement action against a permittee
for bypass unless:
a. Bypass was unavoidable to prevent loss of life, personal injury or severe property
damage: and
b. There were no feasible alternatives to the bypass, such as the use of auxiliary
control facilities, retention of stormwater or maintenance during normal periods of
equipment downtime or dry weather. This condition is not satisfied if adequate
backup controls should have been installed in the exercise of reasonable
engineering judgment to prevent a bypass which occurred during normal periods
of equipment downtime or preventive maintenance: and
C. The permittee submitted notices as required under, Part III, Section E of this
permit.
If the Director determines that it will meet the three conditions listed above. the Director
may approve an anticipated bypass after considering its adverse effects.
SECTION D: IMONITORING AND RECORDS
Representative Sampling
Samples collected and measurements taken, as required herein, shall be characteristic of
the volume and nature of the permitted discharge. Analytical sampling shall be
performed during a representative storm event Samples shall be taken on a day and time
that is characteristic of the discharge. All samples shall be taken before the discharge
joins or is diluted by any other waste stream, body of water, or substance. Monitoring
points as specified in this permit shall not be changed without notification to and
approval of the Director.
Part ❑I Page 6 of 10 Pa ,cs

Permit No. NCS000003
Recording Results
For each measurement, sample, inspection or maintenance activity performed or collected
pursuant to the requirements of this individual permit, the permittee shall record the
following information:
a. The date, exact place, and time of sampling, measurements, inspection or
maintenance activity;
The individual(s) who performed the sampling, measurements, inspection of -
maintenance activity;
C. The date(s) analyses were performed:
d. The individual(s) who performed the analyses:
e. The analytical techniques or methods used: and
F. The results of such analyses.
Flow Measurements
Where required, appropriate flow measurement devices and methods consistent with
accepted scientific practices shall be selected and used to ensure the accuracy and
reliability of measurements of the volume of monitored discharges.
4. Test Procedures
Test procedures for the analysis of pollutants shall conform to the EMC regulations
published pursuant to NCGS 143-215.63 et. scq, the Water and Air Quality Reporting
Acts, and to regulations published pursuant to Section 304(g), 33 USC 1314, of the
Federal Water Pollution Control Act, as Amended, and Regulation 40 CFR 136.
To meet the intent of the monitoring required by this individual permit, all test procedures
must produce minimum detection and reporting levels and all data generated must be
reported down to the minimum detection or lower reporting level of the procedure.
5. Representative Outfall
It' a facility has multiple discharge locations with substantially identical stormwater
discharges that are required to be sampled, the permittee may petition the Director for
representative outfall status. If it is established that the stormwater discharges are
substantially identical and the permittee is granted representative outfall status, then
sampling requirements may be performed at a reduced number of outfalls.
Part III Page 7 of 10 Pees

Permit No. NCSOO6003
6. Records Retention
Visual monitoring shall be documented and records maintained at the facility along with
the Stormwater Pollution Prevention Plan. Copies of analytical monitoring results shall
also be maintained on -site. The permittee shall retain records of all monitoring
information, including all calibration and maintenance records and all original strip chart
recordings for continuous monitoring instrumentation, and copies of all reports required
by this individual permit for a period of at least 5 years from the date of the sample,
measurement, report or application. This period may be extended by request of the
Director at any time.
7. Inspection and Entry
The permittee shall allow the Director, or an authorized representative (including an
authorized contractor acting as a representative of the Director), or in the case of a facility
which discharges through a municipal separate storm sewer system, an authorized
representative of a municipal operator or the separate storm sewer system receiving the
discharge, upon the presentation of credentials and other documents as may be required
by law, to:
a. Enter upon the permittee's premises where a regulated facility or activity is located
or conducted, or where records must be kept under the conditions of this
individual permit:
b. Have access to and copy, at reasonable times, any records that must be kept under
the conditions of this individual permit;
C. Inspect at reasonable times any facilities, equipment (including monitoring and
control equipment), practices, or operations regulated or required under this
individual permit; and
d. Sample or monitor at reasonable times. for the purposes of assuring individual
permit compliance or as otherwise authorized by the Clean Water Act, any
substances or parameters at any location.
SECTION E: REPORTING REQUIREMENTS
Discharge Monitoring Reports
Samples analyzed in accordance with the terms of this permit shall be submitted to the
Division on Discharge Monitoring Report forms provided by the Director. Submittals
shall be received by the Division no later than 30 days from the date the facility receives
the sampling results from the laboratory.
Part III Page 8 of 10 Pat_,es

Permit No. NCS000003
2. Submitting Reports
Duplicate signed copies of all reports required herein, shall be submitted to the following
address:
Division of Water Quality
Water Quality Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh. North Carolina 27699-1617
3. Availability of Reports
Except for data determined to be confidential under NCGS 143-215.3(a)(2) or Section
308 of the Federal Act. 33 USC 1318, all reports prepared in accordance with the terms
shall be available for public inspection at the offices of the Division of Water Quality. As
required by the Act, analytical data shall not be considered confidential. Knowingly
making any false statement on any such report may result in the imposition of criminal
penalties as provided for in NCGS 143-215.613 or in Section 309 of the Federal Act.
4. Non-Stormwater Discharges
If the storm event monitored in accordance with this individual permit coincides with a
non-stormwater discharge, the permittee shall separately monitor all parameters as
required under the non-Stormwater discharge permit and provide this information with the
stormwater discharge monitoring report.
5. Planned Changes
The permittee shall give notice to the Director as soon as possible of any planned changes
at the permitted facility which could significantly after the nature or quantity of pollutants
discharged. This notification requirement includes pollutants which are not specifically
listed in the individual permit or subject to notification requirements under 40 CFR Part
122.42 (a).
6. Anticipated Noncompliance
The permittee shall give notice to the Director as soon as possible of any planned changes
at the permitted facility which may result in noncompliance with the individual permit
requirements.
7. BVpasS
a. Anticipated bypass. If the permittee knows in advance of the need for a bypass, it
shall submit prior notice, if possible at feast ten days before the date of the bypass;
including an evaluation of the anticipated quality and affect of the bypass.
Pan 111 Page 9 of 10 Pages

Permit No. NCS000003
b. Unanticipated bypass. The permittee shall submit notice within 24 hours of
becoming aware of an unanticipated bypass.
8. Twenty -Pour Hour Reporting
The permittee shall report to the central office or the appropriate regional office any
noncompliance which may endanger health or the environment. Any information shall be
provided orally within 24 hours from the time the permittee became aware of the
circumstances. A written submission shall also be provided within 5 days of the time the
permittee becomes aware of the circumstances.
The written submission shall contain a description of the noncompliance, and its causes:
the period of noncompliance, including exact dates and times, and if the noncompliance
has not been corrected, the anticipated time compliance is expected to continue: and steps
taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance.
The Director may waive the written report on a case -by -case basis if the oral report has
been received within 24 hours.
Other Noncompliance
The permittee shall report all instances of noncompliance not reported under 24 hour
reporting at the time monitoring reports are submitted.
10. Other Information
Where the permittee becomes aware that it failed to submit any relevant facts in an
application for an individual permit or in any report to the Director, it shall promptly
submit such facts or information.
Part II l Page 10 of 10 Pa ,es

Permit No. NCS000003
PART IV LIMITATIONS REOPENER
This individual permit shall be modified or alternatively, revoked and reissued, to comply with
any applicable effluent guideline or water quality standard issued or approved under Sections
302(b) (2) (c), and (d), 304(b) (2) and 307(a) of the Clean Water Act, if the effluent guideline or
water quality standard so issued or approved:
a. Contains different conditions or is otherwise more stringent than any effluent limitation in
the individual permit; or
b. Controls any pollutant not limited in the individual permit.
The individual permit as modified or reissued under this paragraph shall also contain any other
requirements in the Act then applicable.
PART V ADMINISTERING AND COMPLIANCE MONITORING FEE
REQUIREMENTS
The perrnittee must pay the administering and compliance monitoring fee within 30 (thirty) days
after being billed by the Division. Failure to pay the fee in timely manner in accordance with
I5A NCAC 2H .0105(b)(4) may cause this Division to initiate action to revoke the Individual
Permit.
PART VI DEFINITIONS
1. Act
See Clean Water Act.
2. Arithmetic Mean
The arithmetic mean of any set of values is the summation of the individual values
divided by the number of individual values.
3. Allowable Non-Stormwater Discharges
This permit regulates stormwater discharges. Non-stormwater discharges which shall be
allowed in the stormwater conveyance system are:
(a) All other discharges that are authorized by a non-stormwater NPDES permit.
Parts IV, V and VI Page I of 6

Permit No. NCS006003
(b) Uncontaminated groundwater, foundation drains, air -conditioner condensate
without added chemicals, springs, discharges of uncontaminated potable water,
waterline and fire hydrant flushings, water from footing drains, flows from
riparian habitats and wetlands.
(c) Discharges resulting from fire -fighting or fire -fighting training.
4. Best Management Practices (BMPs)
Measures or practices used to reduce the amount of pollution entering surface waters.
BMPs may take the form of a process, activity, or physical structure.
5. Bvpass
A bypass is the known diversion of stormwater from any portion of a stormwater control
facility including the collection system, which is not a designed or established operating
mode for the facility.
6. Bulk Storage of Liquid Products
Liquid raw materials, manufactured products, waste materials or by-products with a
single above ground storage container having a capacity of greater than 660 gallons or
with multiple above ground storage containers located in close proximity to each other
having a total combined storage capacity of greater than 1,320 gallons.
7. Clean Water Act
The Federal Water Pollution Control Act, also known as the Clean Water Act (CWA), as
amended. 33 USC 1251, et. seq.
S. Division or DWQ
The Division of Water Quality, Department of Environment and Natural Resources.
9. Director
The Director of the Division of Water Quality, the permit issuing authority.
10. EN/IC
The North Carolina Environmental Management Commission.
11. Grab Sample
An individual sample collected instantaneously. Grab samples that will be directly
analyzed or qualitatively monitored must be taken within the first 30 minutes of
discharge.
Part VI Page 2 of 6 Paues

Permit No. NCS000003
12. Hazardous Substance
Any substance designated under 40 CFR Part 116 pursuant to Section 311 of the Clean
Water Act.
13. Landfill
A disposal facility or part of a disposal facility where waste is placed in or on land and
which is not a land treatment facility, a surface impoundment, an injection well, a
hazardous waste long-term storage facility or a surface storage facility.
14. Municipal Separate Storm Sewer System
A stormwater collection system within an incorporated area of local self-government such
as a city or town.
15. Overburden
Any material of any nature, consolidated or unconsolidated, that overlies a mineral
deposit, excluding topsoil or similar naturally -occurring surface materials that are not
disturbed by mining operations.
16. Permittee
The owner or operator issued a permit pursuant to this individual permit.
17. Point Source Discharge of Stormwater
Any discernible, confined and discrete conveyance including, but not specifically limited
to. any pipe, ditch, channel, tunnel, conduit, well, or discrete fissure from which
stormwater is or may be discharged to waters of the state.
18. Representative Storm Event
A storm event that measures greater than 0.1 inches of rainfall and that is preceded by at least 72
hours in which no storm event measuring greater than 0.1 inches has occurred. A single storm
event may contain up to 10 consecutive hours of no precipitation. For example, if it rains for 2
hours without producing any collectable discharge, and then stops, a sample may be collected if a
rain producing a discharge begins again within the next 10 hours.
19. Representative Outfall Status
When it is established that the discharge of stormwater runoff from a single outfall is
representative of the discharges at multiple outfalls, the DWQ may grant representative
outfall status. Representative outfall status allows the permittee to perform analytical
monitoring at a reduced number of outfalls.
Part VI Page 3 of 6 Pages

Permit No. NCS000003
20. Rinse Water Discharee
The discharge of rinse water from equipment cleaning areas associated with industrial
activity. Rinse waters from vehicle and equipment cleaning areas are process
wastewaters and do not include washwaters utilizing any type of detergent or cleaning
agent.
21. Secondary Containment
Spill containment for the contents of the single largest tank within the containment
structure plus sufficient freeboard to allow for the 25-year, 24-hour storm event.
22. Section 313 Water Priority Chemical
A chemical or chemical category which:
a. Is listed in 40 CFR 372.65 pursuant to Section 313 of Title III of the Superfund
Amendments and Reauthorization Act (SARA) of t986, also titled the Emergency
Planning and Community Right -to -Know Act of 1986:
b. Is present at or above threshold levels at a facility subject to SARA title 111,
Section 313 reporting requirements: and
C. That meet at least one of the following criteria:
(1) Is listed in Appendix D of 40 CFR pail 122 on either Table II (organic
priority pollutants). Table III (certain metals. cyanides, and phenols) or
Table IV (certain toxic pollutants and hazardous substances):
(2) Is listed as a hazardous substance pursuant to section 311(b)(2)(A) of the
CWAat40CFR 116*or
(3) Is a pollutant for which EPA has published acute or chronic water quality
criteria.
23. Severe Property Damage
Means substantial physical damage to property, damage to the control facilities which
causes them to become inoperable, or substantial and permanent loss of natural resources
which can reasonably be expected to occur in the absence of a bypass. Severe property
damage does not mean economic loss caused by delays in production.
24. Significant Materials
Includes, but is not limited to: raw materials; fuels; materials such as solvents, detergents,
and plastic pellets; finished materials such as metallic products; raw materials used in
food processing or production; hazardous substances designated under section 101(14) of
Part V 1 Page 4 of 6 Pages

C
Permit No. NCS000003
CERCLA; any chemical the facility is required to report pursuant to section 313 of Title
III of SARA: fertilizers; pesticides; and waste products such as ashes, slag and sludge that
have the potential to be released with stormwater discharges.
25. Significant Spills
Includes, but is not limited to: releases of oil or hazardous substances in excess of
reportable quantities under section 311 of the Clean Water Act (Ref: 40 CFR 1 10.10 and
CFR 117.21) or section 102 of CERCLA (Ref: 40 CFR 302.4).
26. Stormwater Runoff
The flow of water which results from precipitation and which occurs immediately
following rainfall or as a result of snowmelt.
27. Stormwater Associated with Industrial Activitv
The discharge from any point source which is used for collecting and conveying
stormwater and which is directiv related to manufacturing. processing or raw material
storage areas at an industrial site. Facilities considered to be engaged in "industrial
activities" include those activities defined in 40 CFR 122.26(b)(14). The term does not
include discharges from facilities or activities excluded from the NPDES program.
28. Stormwater Pollution Prevention Plan
A comprehensive site -specific plan which details measures and practices to reduce
stormwater pollution and is based on an evaluation of the pollution potential of the site.
29. Ten Year Design Storm
The maximum 24 hour precipitation event expected to be equaled or exceeded on the
average once in ten years. Design storm information can be found in the State of North
Carolina Erosion and Sediment Control Planning and Design Manual.
30. Total Flow
The Flow corresponding to the time period over which the entire storm event occurs.
Total flow shall be either; (a) measured continuously, (b) calculated based on the amount
of area draining to the outfall, the amount of built -upon (impervious) area, and the total
amount of rainfall, or (c) estimated by the measurement of flow at 20 minute intervals
during the rainfall event.
31. Toxic Pollutant
Any pollutant listed as toxic under Section 307(a)(1) of the Clean Water Act.
Part V 1 Page 5 of 6 Pages

Permit No. NCS006003
32. Upset
Means an exceptional incident in which there is unintentional and temporary
noncompliance with technology based permit effluent limitations because of factors
beyond the reasonable control of the permittee. An upset does not include
noncompliance to the extent caused by operational error, improperly designed treatment
or control facilities. inadequate treatment or control facilities, lack of preventive
maintenance, or careless or improper operation.
33. Vehicle Maintenance Activity
Vehicle rehabilitation, mechanical repairs, painting, fueling, lubrication, vehicle cleaning
operations, or airport deicing operations.
34. Visible Sedimentation
Solid particulate matter, both mineral and organic, that has been or is being transported
by water, air, gravity, or ice from its site of origin which can be seen with the unaided
eye.
35. 25-vear. 24 hour storm event
The maximum 24-hour precipitation event expected to be equaled or exceeded, on the
average, once in 25 years.
Part VI Pace 6 of 6 Paccs

• NPDES FACILITY AND PERMIT DATA 11/09/99 10:16:17
UPDATE: OPTION TRXID 5NU KEY NCS000003
PERSONAL DATA FACILITY APPLYING FOR PERMIT REGION
FACILITY NAME> OCCIDENTAL CHEMICAL CORP. COUNTY> NEW HANOVER 08
ADDRESS: MAILING (REQUIRED) LOCATION (REQUIRED)
STREET: POST OFFICE BOX 368 STREET: 5408 HOLLY SHELTER ROAD
CITY: CASTLE HAYNE ST NC ZIP 28429 CITY: CASTLE HAYNE ST NC ZIP 28429
TELEPHONE [phone] DATE FEE PAID: 09/04/92 AMOUNT: 400.00
STATE CONTACT> EVANS PERSON IN CHARGE GENE F. RENZAGLIA
1=PROPOSED,2=EXIST,3=CLOSED 1 1=MAJOR,2=MINOR 2 1=MUN,2=NON-MUN 2
LAT: 3500000 LONG: 08000000 N=NEW,M=MODIFICATION,R=REISSUE> R
DATE APP RCVD, 03/02/99 WASTELOAD REQS
DATE STAFF REP REQS / / WASTELOAD RCVD
DATE STAFF REP RCVD / / SCH TO ISSUE 10/23/99
DATE TO P NOTICE 09/08/99 DATE DRAFT PREPARED 09/01/99
DATE OT AG COM REQS / / DATE DENIED
DATE OT AG COM RCVD / / DATE RETURNED
DATE TO EPA / / DATE ISSUED / / ASSIGN/CHANGE PERMIT
DATE FROM EPA / / EXPIRATION DATE
FEE CODE ( 4 ) 1=(>10MGD),2=(>1MGD),3=(>O.1MGD),4=(<O.1MGD),S=SF,6=(GP25,64,79),
7=(GP49,73)8=(GP76)9=(GP13,34,30,52)0=(NOFEE) DIS/C 73 CONBILL ( )
COMMENTS:
MESSAGE: ADFE191 *** NO MODIFICATIONS MADE TO SCREEN ***

Permit No. NCS000003
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE STORMWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions 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, - y
Occidental Chemical Company
is hereby authorized to discharge stormwater from a facility located at
Occidental Chemical Company
5408 Holly Shelter Road
Castle Hayne, NC
New Hanover County
to receiving waters designated as Northeast Cape Fear River, a Class B Sw stream, in the Cape Fear River Basin
in accordance with the discharge limitations, monitoring requirements, and other conditions set forth in Parts 1, II, III, IV, V
and VI hereof.
This permit shall become effective November I. 1999
This permit and the authorization to discharge shall expire at midnight on October 31, 2004.
Signed this day October 22, 1999.
DRAFT
for Kerr T. Stevens, Director
Division of Water Quality
By the Authority of the Environmental Management Commission

Permit No. NCS000b03
TABLE OF CONTENTS
PART I INTRODUCTION
Section A: Individual Permit Coverage
Section B: Permitted Activities
Section C: Location Map
PART II MONITORING, CONTROLS, AND LIMITATIONS FOR PERMITTED
DISCHARGES
Section A: Stormwater Pollution Prevention Plan
Section B: Analytical Monitoring Requirements
Section C: Qualitative Monitoring Requirements
Section D: On -Site Vehicle Maintenance Monitoring Requirements
PART III STANDARD CONDITIONS
Section A: Compliance and Liability
1. Compliance Schedule
2. Duty to Comply
3. Duty to Mitigate
4. Civil and Criminal Liability
5. Oil and Hazardous Substance Liability
6. Property Rights
7. Severability
S. Duty to Provide Information
9. Penalties for Tampering
10. Penalties for Falsification of Reports
Section B: General Conditions
1. Individual Permit Expiration
2. Transfers

Permit No. NCS000003
3. Signatory Requirements
4. Individual Permit Modification, Revocation and ReiSSnance, or
Termination
5. Permit Actions
Section C: Operation and Maintenance of Pollution Controls
1. Proper Operation and Maintenance
2. Need to Halt or Reduce Not a Defense
3. Bypassing of Stormwater Control Facilities
Section D: Monitoring and Records
I.
Representative Sampling
2.
Recording Results
3.
Flow Measurements
4.
Test Procedures
5.
Representative Outfall
6.
Records Retention
7.
Inspection and Entry
Section E: Reporting
Requirements
1.
Discharge Monitoring Reports
2.
Submitting Reports
3.
Availability of Reports
4.
Non-Stormwater Discharges
5.
Planned Chan. -es
6.
Anticipated Noncompliance
7.
Bypass
S.
Twenty-four Hour Reporting
9.
Other Noncompliance
10.
Other Information
PART IV LIMITATIONS REOPENER
PART V ADMINISTERING AND COMPLIANCE MONITORING FEE
REQUIREMENTS
PART VI DEFINITIONS

Permit No. NCS000003
PART I INTRODUCTION
SECTION A: INDIVIDUAL PERMIT COVERAGE
During the period beginning on the effective date of the permit and lasting until expiration, the
permittee is authorized to discharge stormwater associated with industrial activity. Such
discharges shall be controlled, limited and monitored as specified in this permit.
SECTION B: PERMITTED ACTIVITIES
Until this permit expires or is modified or revoked, the permittee is authorized to discharge
stormwater to the surface waters of North Carolina or separate storm sewer system which has
been adequately treated and managed in accordance with the terms and conditions of this
individual permit. All discharges shall be in accordance with the conditions of this permit.
Any other point source discharge to surface waters of the state is prohibited unless it is an
allowable non-stormwater discharge or is covered by another permit, authorization or approval.
This permit does not relieve the permittee from responsibility for compliance with any other
applicable federal, state, or local law, rule, standard, ordinance, order, judgment, or decree.
Part I Pace I or 2

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Permit No. NCS000003
PART II MONITORING, CONTROLS, AND LIMITATIONS FOR
PERMITTED DISCHARGES
SECTION A: STORNIWATER POLLUTION PREVENTION PLAN
The permittee shall develop a Stormwater Pollution Prevention Plan, herein after referred to as
the Plan. This Plan shall be considered public information in accordance with Part III, Standard
Conditions, Section E. Paragraph 3 of this individual permit. The Plan shall include, at a
minimum, the following items:
Site Plan. The site plan shall provide a description of the physical facility and the
potential pollutant sources which may be expected to contribute to contamination of
stormwater discharges. The site plan shall contain the following:
(a) A general location map (USGS quadrangle map or appropriately drafted
equivalent map), showing the facility's location in relation to transportation
routes and surface waters, the name of the receiving water(s) to which the
stormwater outfall(s) discharges, or if the discharge is to a municipal separate
storm sewer system, the name of the municipality and the ultimate receiving
waters; and accurate latitude and longitude of the point(s) of discharge.
(b) A narrative description of storage practices, loading and unloading activities,
outdoor process areas, dust or particulate generating or control processes, and
waste disposal practices.
(c) A site map drawn to scale with the distance legend indicating location of
industrial activities (including storage of materials, disposal areas, process areas
and loading and unloading areas), drainage structures, drainage areas for each
outfall and activities occurring in the drainage area, building locations, existing
BMPs and impervious surfaces, and the percentage of each drainage area that is
impervious. For each outfall, a narrative description of the potential pollutants
which could be expected to be present in the stormwater discharge.
(d) A list of significant spills or leaks of pollutants that have occurred at the facility
during the 3 previous years and any corrective actions taken to mitigate spill
impacts.
(e) Certification that the stormwater outfalls have been evaluated for the presence of
non-stormwater discharges. The certification statement will be signed in
accordance with the requirements found in Part III, Standard Conditions, Section
B, Paragraph 3.
2. Stormwater Management Plan. The stormwater management plan shall contain a
narrative description of the materials management practices employed which control or
minimize the exposure of significant materials to stormwater, including structural and
Part 11 Page I or 6

Permit No. NCS000003
nonstructural measures. The stormwater management plan, at a minimum, shall
incorporate the following:
(a) Feasibility.Study. A review of the technical and economic feasibility of changing
the methods of operations and/or storage practices to eliminate or reduce exposure
of materials and processes to stormwater. Wherever practical, the permittee shall
prevent exposure of all storage areas, material handling operations, and
manufacturing or fueling operations. In areas where elimination of exposure is
not practical, the stormwater management plan shall document the feasibility of
diverting the stormwater runoff away from areas of potential contamination.
(b) Secondary Containment Schedule. A schedule to provide secondary containment
for bulk storage of liquid materials, storage of Section 313 of Title III of the
Superfund Amendments and Reauthorization Act (SARA) water priority
chemicals, or storage of hazardous substances to prevent leaks and spills from
contaminating stormwater runoff. If the secondary containment devices are .
connected directly to stormwater conveyance systems, the connection shall be
controlled by manually activated valves or other similar devices [which shall be
secured with a locking mechanism] and any stormwater that accumulates in the
containment area shall be at a minimum visually observed for color, foam, outfall
staining, visible sheens and dry weather flow, prior to release of the accumulated
stormwater. Accumulated stormwater shall be released if found to be
uncontaminated by the material stored within the containment area. Records
documenting the individual making the observation, the description of the
accumulated stormwater and the date and time of the release shall be kept for a
period of five years.
(c) BMP Summary. A narrative description shall be provided of Best Management
Practices (BMPs) to be considered such as, but not limited to, oil and grease
separation. debris control, vegetative filter strips, infiltration and stormwater
detention or retention, where necessary. The need for structural BMPs shall be
based on the assessment of potential of sources to contribute significant quantities
of pollutants to stormwater discharges and data collected through monitoring of
stormwater discharges.
3. Spill Prevention and Response Plan. The Spill Prevention and Response Plan (SPRP)
shall incorporate an assessment of potential pollutant sources based on a materials
inventory of the facility. Facility personnel (or team) responsible for implementing the
SPRP shall be identified. A responsible person shall be on -site at all times during facility
operations that have the potential to contaminate stormwater runoff through spills or
exposure of materials associated with the facility operations. The SPRP must be site
stormwater specific. Therefore, a SPCC plan may be a component of the SPRP, but may
not be sufficient to completely address the stormwater aspects of the SPRP. The common
elements of the SPCC with the SPRP may be incorporated by reference into the SPRP.
4. Preventative Maintenance and Good Housekeeping Program. A preventative
maintenance program shall be developed. The program shall document schedules of
inspections and maintenance activities of stormwater control systems, plant equipment
Part 11 Paee 2 of 6

Permit No. NCS000003
and systems. Inspection of material handling areas and regular cleaning schedules of
these areas shall be incorporated into the program.
5. Employee Training. Training schedules shall be developed and training provided at a
minimum on an annual basis on proper spill response and cleanup procedures and
preventative maintenance activities for all personnel involved in any of the facility's
operations that have the potential to contaminate stormwater runoff. Facility personnel
(or team) responsible for implementing the training shall be identified.
6. Responsible Party. The Stormwater Pollution Prevention Plan shall identify a specific
position(s) responsible for the overall coordination, development, implementation, and
revision to the Plan. Responsibilities for all components of the Plan shall be documented
and position assignments provided.
7. Plan Amendment. The permittee shall amend the Plan whenever there is a change in
design, construction, operation, or maintenance which has a significant effect on the
potential for the discharge of pollutants to surface waters. The Stormwater Pollution
Prevention Plan shall be reviewed and updated on an annual basis.
The Director may notify the permittee when the Plan does not meet one or more of the
minimum requirements of the permit. Within 30 days of such notice, the permittee shall
submit a time schedule to the Director for modifying the Plan to meet minimum
requirements. The permittee shall provide certification in writing (in accordance with
Part III, Standard Conditions, Section B, Paragraph 3) to the Director that the changes
have been made.
S. Facility Inspection Program. Facilities are required to inspect all stormwater systems on
at least a semiannual schedule, once in the fall (September -November) and once in the
spring (April - June). The inspection and any subsequent maintenance activities
performed shall be documented, recording date and time of inspection, individual(s)
making the inspection and a narrative description of the facility's stormwater control
systems, plant equipment and systems. Records of these inspections shall be
incorporated into the Stormwater Pollution Prevention Plan.
Stormwater discharge characteristic monitoring as required in Part II of this permit shall
be performed in addition to facility inspections.
9. Implementation. The permittee shall document all monitoring, measurements,
inspections and maintenance activities and training provided to employees, including the
log of the sampling data and of activities taken to implement BMPs associated with the
industrial activities, including vehicle maintenance activities. Such documentation shall
be kept on -site for a period of five years and made available to the Director or his
authorized representative immediately upon request.
Part 11 Paee 3 of 6

Permit No. NCS000003
SECTION B: ANALYTICAL MONITORING REQUIREMENTS
During the period beginning on the effective date of the permit and lasting until expiration, the
permittee is authorized to discharge stormwater subject to the provisions of this permit.
Analytical monitoring of stormwater discharges shall be performed as specified below in Table
I.
All analytical monitoring shall be performed during a representative storm event. The required
monitoring will result in a minimum of 4 analytical samplings being conducted over the term of
the permit at each stormwater discharge outfall (SDO). The permittee shall complete the
minimum 4 analytical samplings in accordance with the schedule specified below in Table 2.
Table 1. Analvtical Monitoring Requirements
. Discharge
Characteristics
Units
Measurement
Frequencyl
Sample
Type'-
Sample
Location3
Chromium
mg/I
Quarterly- 4"' year
Grab
SDO
Nitrite -Nitrate Nitrogen
mg/I
Quarterly- 4"year
Grab
SDO
Total Rainfall4
inches
Quarterly- 4"year
Event Duration4
minutes
Quarterly- 4" year
Total Flow4
I ivlG
Quarterly- 4'" year
SDO
Footnotes:
I Measurement Frequency: Once per quarter during the 4" year of the permit term. Ayear is defined as the 12
month period beginning on the month and day of issuance of the Permit. See Table 2 for schedule of monitoring
periods.
If the stormwater runoff is controlled by a stormwater detention pond. a grab sample of the discharge from the
pond shall be collected within the first 30 minutes of discharge. If the detention pond discharges only in response
to a storm event exceeding a ten year design storm, then no analytical monitoring is required and only qualitative
monitoring shall be performed.
3 Sample Location: Samples shall be collected at each stormwater discharge outfall (SDO) unless representative
outfall status has been graptcd.
4 For each sampled representative storm event the total precipitation, storm duration, and total flow must be
monitored. Total Flow shall be either; (a) measured continuously. (b) calculated based on the amount of area
draining to the outfall, the amount of built -upon (impervious) area, and the total amount of rainfall, or (c)
estimated by the measurement of flow at 20 minute intervals during the rainfall event.
Table 2 Monitoring schedule (for Permits issued 11/01/99 only)
Monitoring period
Sample Number
Start
End
Year 4 - I" quarter
I
November I, 2002
January 31, 2003
Year 4 - 2"" quarter
2
February 1. 2003
April 307 2003
Year 4 - 3'° quarter
3
May 1, 2003
July 31. 2003
Year 4 - 4"' quarter
4
August I, 2003
October 31, 2003
Part 11 Page 4 of 6

Permit No. NCS000003
SECTION C: QUALITATIVE MONITORING REQUIREMENTS
Qualitative monitoring requires a visual inspection of each stormwater outfall regardless of
representative outfall status and shall be performed as specified below in Table 3. Qualitative
monitoring is for the purpose of evaluating the effectiveness of the Stormwater Pollution
Prevention Plan (SPPP) and assessing new sources of stormwater pollution. No analytical tests
are required. Qualitative monitoring of stormwater outfalls does not need to be performed during
a representative storm event.
In the event an atypical condition is noted at a stormwater discharge outfall, the Permittee shall
document the suspected cause of the condition and any actions taken in response to the
discovery. This documentation will be maintained with the Stormwater Pollution Prevention
Plan.
All qualitative monitoring will be performed twice per year, once in the spring (April - June) and
once in the fall (September - November).
Table 3. Qualitative Monitoring Requirements
Discharge Characteristics
Frequency
Monitoring
Locations
Color
Semi -Annual
SDO
Odor
Semi -Annual
SDO
Claritv
Semi -Annual
SDO
Floating Solids
Semi -Annual
SDO
Sus ended Solids
Semi -Annual
SDO
Foam
Semi -Annual
SDO
Oil Sheen
Semi -Annual
SDO
Other obvious indicators
of stormwater pollution
Semi -Annual
SDO
Footnotes:
I Monitoring Location: Qualitative monitoring shall be performed at each stormwater discharge outfall (SDO)
regardless of representative outfall status.
SECTION D: ON -SITE VEHICLE MAINTENANCE MONITORING REQUIREMENTS
Facilities which have any vehicle maintenance activity occurring on -site which uses more than
55 gallons of new motor oil per month when averaged over the calendar year shall perform
analytical monitoring as specified below in Table 4. This monitoring shall be performed at all
outfalls which discharge stormwater runoff from vehicle maintenance areas.
All analytical monitoring shall be performed during a representative storm event. The required
monitoring will result in a minimum of 4 analytical samplings being conducted over the term of
Pait II Pa_e5o16

Permit No. NCS000003
the permit at each stormwater discharge outfall (SDO) which discharges stormwater runoff from
vehicle maintenance areas. The permittee shall complete the minimum 4analytical samplings in
accordance with the schedule specified in Table 2 (Part II, Section B).
Table 4. Analytical Monitoring Requirements for On -Site Vehicle Maintenance
Discharge Characteristics
Units ..
Measurement
Frequencyt
Sample
Typez
Sample
Location3
H
standard
Quarterly- 4" year
Grab
SDO
Oil and Grease
mg/I
Quarterly- 4" year
Grab
SDO
Total suspended Solids
mg/I
Quarterly- 4" year
Gab
SDO
New Motor Oil Usage
gallons/month
Quarterly- 4" year
Estimate
Total Flow4
MG
Quarterly- 4"' year
Grab
SDO
Footnotes:
I Measurement Frequency: Once per quarter during the 4" year of the permit term. A year is defined as the 12
month period be=innim, on the month and day of issuance of the Permit. See Table 2 for schedule of monitoring
periods.
2 If the stormwater runoff is controlled by a stormwater detention pond. a grab sample of the discharge from the
pond shall be collected within the first 30 minutes of discharge. If the detention pond discharges only in response
to a storm event exceeding a ten year design storm. then no analytical monitoring_ is required and only qualitative
monitoring shall be performed.
3 Sample Location: Samples shall be collected at each stormwater discharge outfall (SDO) that discharges
stormwater runoff from area(s) where vehicle maintenance activities occur.
4 Total Flow shall be; (a) measured continuously. (b) calculated based on the amount of area draining to the outfall.
the amount of built -upon (impervious) area. and the total amount of rainfall. or (c) estimated by the measurement
of flow at 20 minute intervals during the rainfall event. Total precipitation and duration of the rainfall event
measured shall result from the sampled representative storm event.
Part 11 Paae 6 ol'6

Permit No. NCS000003
PART III STANDARD CONDITIONS FOR NPDES STORMWATER INDIVIDUAL
PERMITS
SECTION A: COMPLIANCE AND LIABILITY
1. Compliance Schedule
The permittee shall comply with Limitations and Controls specified for stormwater
discharges in accordance with the following schedule:
Existine Facilities: The Stormwater Pollution Prevention Plan shall be developed and
implemented within 12 months of the effective date of the initial permit and updated
thereafter on an annual basis. Secondary containment, as specified in Part II, Section A,
Paragraph 2(b) of this permit, shall be accomplished within'12 months of the effective
date of the initial permit issuance.
Proposed Facilities: The Stormwater Pollution Prevention Plan shall be developed and
implemented prior to the beginning of discharges from the operation of the industrial
activity and be updated thereafter on an annual basis. Secondary containment, as
specified in Part 11, Section A, Paragraph 2(b) of this permit shall be accomplished prior
to the beginning of discharges from the operation of the industrial activity.
2. Duty to Comply
The permittee must comply with all conditions of this individual permit. Any permit
noncompliance constitutes a violation of the Clean Water Act and is grounds for
enforcement action: for permit termination, revocation and reissuance, or modification: or
denial of a permit upon renewal application.
a. The permittee shall comply with standards or prohibitions established under
section 307(a) of the Clean Water Act for toxic pollutants within the time
provided in the regulations that establish these standards or prohibitions, even it'
the permit has not yet been modified to incorporate the requirement.
b. The Clean Water Act provides that any person who violates a permit condition is
subject to a civil penalty not to exceed $25,000 per day for each violation. Any
person who negligently violates any permit condition is subject to criminal
penalties of $2.500 to $25,000 per day of violation, or imprisonment for not more
than 1 year, or both. Any person who knowingly violates permit conditions is
subject to criminal penalties of $5,000 to $50,000 per day of violation, or
imprisonment for not more than 3 years, or both. Also, any person who violates a
permit condition may be assessed an administrative penalty not to exceed $10,000
per violation with the maximum amount not to exceed $125,000. [Ref: Section
309 of the Federal Act 33 USC 1319 and 40 CPR 122.41(,1).1
Part III Pagc I of 10 Pries

Permit No. NCS006003
C. Under state law, a daily civil penalty of not more than ten thousand dollars•
($10,000) per violation may be assessed against any person who violates or fails
to act in accordance with the terms, conditions, or requirements of a permit. [Ref:
North Carolina General Statutes 143-215.6A]
d. Any person may be assessed an administrative penalty by the Director for
violating section 301, 301306, 307, 308, 318, or 405 of the Act, or any permit
condition or limitation implementing any of such sections in a permit issued under
section 402 of the Act. Administrative penalties for Class I violations are not to
exceed $10,000 per violation, with the maximum amount of any Class I penalty
assessed not to exceed $25,000. Penalties for Class ❑ violations are not to exceed
$10,000 per day for each day during which the violation continues, with the
maximum amount of any Class 1.1 penalty not to exceed $125,000.
Duty to Mitigate .
The permittee shall take all reasonable steps to minimize or prevent any discharge in
violation of this individual permit which has a reasonable likelihood of adversely
affecting human health or the environment.
4. Civil and Criminal Liabilitv
Except as provided in Part III, Section C of this permit regarding bypassing of stormwater
control facilities, nothing in this individual permit shall be construed to relieve the
permittee from any responsibilities, liabilities, or penalties for noncompliance pursuant to
NCGS 143-215.3. 143-215.6A. 143-215.6B. 143-215.6C or Section 309 of the Federal Act.
33 USC 1319. Furthermore, the permittee is responsible for consequential damages, such
as fish kills, even though the responsibility for effective compliance may be temporarily
suspended.
5. Oil and Hazardous Substance Liability
Nothing in this individual permit shall be construed to preclude the institution of any
legal action or relieve the permittee from any responsibilities, liabilities, or penalties to
which the permittee is or may be subject to under NCGS 143-215.75 et seq. or Section 31 1
of the Federal Act. 33 USC 1321.
6. Property Rights
The issuance of this individual permit does not convey any property rights in either real or
personal property, or any exclusive privileges, nor does it authorize any injury to private
property or any invasion of personal rights, nor any infringement of Federal, State or local
laws or regulations.
Part III Pale 2 of 10 Pages

Permit No. NCS000003
7. Severability
The provisions of this individual permit are severable, and if any provision of this
individual permit, or the application of any provision of this individual permit to any
circumstances, is held invalid, the application of such provision to other circumstances,
and the remainder of this individual permit, shall not be affected thereby.
8. Duty to Provide Information
The permittee shall furnish to the Director, within a reasonable time, any information
which the Director may request to determine whether cause exists for modifying,
revoking and reissuing, or terminating the permit issued pursuant to this individual permit
or to determine compliance with this individual permit. The permittee shall also furnish
to the Director upon request, copies of records required to be kept by this individual
permit.
9. Penalties for Tampering
The Clean Water Act provides that any person who falsifies, tampers with, or knowingly
renders inaccurate, anv monitoring device or method required to be maintained under this
individual permit shall, upon conviction. be punished by a fine of not more than $10,000
per violation, or by imprisonment for not more than two years per violation, or by both.
If a conviction of a person is for a violation committed after a first conviction of such
person under this paragraph, punishment is a fine of not more that $20,000 per day of
violation, or by imprisonment of not more than 4 years, or both.
10. Penalties for Falsification of Reports
The Clean Water Act provides that any person who knowingly makes any false statement,
representation. or certification in any record or other document submitted or required to
be maintained under this individual permit, including monitoring reports or reports of
compliance or noncompliance shall, upon conviction, be punished by a fine of not more
than $10.000 per violation, or by imprisonment for not more than two years per violation,
or by both.
SECTION B: GENERAL CONDITIONS
Individual Permit Expiration
The permittee is not authorized to discharge after the expiration date. In order to receive
automatic authorization to discharge beyond the expiration date, the permittee shall
submit forms and fees as are required by the agency authorized to issue permits no later
than 180 days prior to the expiration date. Any permittee that has not requested renewal
at least 180 days prior to expiration, or anv permittee that does not have a permit after the
expiration and has not requested renewal at least 180 days prior to expiration, will be
Part III Page 3 of 10 Pages

Permit No. NCS000003
subjected to enforcement procedures as provided in NCGS §143-2153.6 and 33 USC
1251 et. seq.
Transfers
This permit is not transferable to any person except after notice to and approval by the
Director. The Director may require modification or revocation and reissuance of the
permit to change the name and incorporate such other requirements as may be necessary
under the Clean Water Act. Permittee is required to notify the Division in writing in the
event the permitted facility is sold or closed.
Signatory Requirements
All applications, reports, or information submitted to the Director shall be signed and
certified.
a. All applications to be covered under this individual permit shall be signed as
follows:
(1) For a corporation: by a responsible corporate officer. For the purpose of
this Section, a responsible corporate officer means: (a) a president,
secretary, treasurer or vice president of the corporation in charge of a
principal business function, or any other person who performs similar
policy or decision making functions for the corporation, or (b) the manager
of one or more manufacturing production or operating facilities employing
more than 250 persons or having gross annual sales or expenditures
exceeding 25 million (in second quarter 1980 dollars), if authority to sign
documents has been assigned or delegated to the manager in accordance
with corporate procedures.
(2) For a partnership or sole proprietorship: by a general partner or the
proprietor, respectively; or
(3) For a municipality, State. Federal, or other public agency: by either a
principal executive officer or ranking elected official.
b. All reports required by the individual permit and other information requested by
the Director shall be signed by a person described above or by a duly authorized
representative of that person. A person is a duly authorized representative only if:
(1) The authorization is made in writing by a person described above;
(2) The authorization specified either an individual or a position having
responsibility for the overall operation of the regulated facility or activity,
such as the position of plant manager, operator of a well or well field,
superintendent, a position of equivalent responsibility, or an individual or
position having overall responsibility for environmental matters for the
Part In Pa,,e-4 of 10 Pates

Permit No. NCS000003
company. (A duly authorized representative may thus be either a named
individual or any individual occupying a named position.): and
(3) The written authorization is submitted to the Director.
C. Any person signing a document under paragraphs a. or b. of this section shall
make the following certification:
"I certify, under penalty of law, that this document and all attachments were
prepared under my direction or supervision in accordance with a system designed
to assure that qualified personnel properly gather and evaluate the information
submitted. Based on my inquiry of the person or persons who manage the system,
or those persons directly responsible for gathering the information, the
information submitted is, to the best of my knowledge and belief, true, accurate,
and complete. I am aware that there are significant penalties for submitting false
information, including the possibility of fines and imprisonment for knowing
violations."
4. Individual Permit Modification. Revocation and Reissuance. or Termination
The issuance of this individual permit does not prohibit the Director from reopening and
modifying the individual permit, revoking and reissuing the individual permit, or
terminating the individual permit as allowed by the laws, rules, and regulations contained
in Title 40, Code of Federal Regulations, Parts t22 and 123; Title 15A of the North
Carolina Administrative Code, Subchapter 2H .01W and North Carolina General Statute
143-215.1 et. al.
After public notice and opportunity for a hearing, the individual permit may be terminated
for cause. The filing of a request for a individual permit modification, revocation and
reissuance, or termination does not stay any individual permit condition. The permit shall
expire when the individual permit is terminated.
Permit Actions
The permit may be modified, revoked and reissued, or terminated for cause. The
notification of planned changes or anticipated noncompliance does not stay any
individual permit condition.
SECTION C: OPERATION AND MAINTENANCE OF POLLUTION CONTROLS
Proper Operation and Maintenance
The permittee shall at all times properly operate and maintain all facilities and systems of
treatment and control (and related appurtenances) which are installed or used by the
permittee to achieve compliance with the conditions of this individual permit. Propel -
operation and maintenance also includes adequate laboratory controls and appropriate
Pan III Pa,_,c 5 of 10 Pages

Permit No. NCS000003
quality assurance procedures. This provision requires the operation of back-up or
auxiliary facilities or similar systems which are installed by a permittee only when the
operation is necessary to achieve compliance with the conditions of this individual
permit.
3. Need to Halt or Reduce Not a Defense
It shall not be a defense for a permittee in an enforcement action that it would have been
necessary to halt or reduce the permitted activity in order to maintain compliance with
the condition of this individual permit.
3. Bypassing of Stormwater Control Facilities
Bypass is prohibited and the Director may take enforcement action against a permittee
for bypass unless:
a. Bypass was unavoidable to prevent loss of life, personal injury or severe property
damage: and
b. There were no feasible alternatives to the bypass, such as the use of auxiliary
control facilities, retention of stormwater or maintenance during normal periods of
equipment downtime or dry weather. This condition is not satisfied if adequate
backup controls should have been installed in the exercise of reasonable
engineeringjudgment to prevent a bypass which occurred during normal periods
of equipment downtime or preventive maintenance: and
The permittee submitted notices as required under, Part III, Section E of this
permit.
If the Director determines that it will meet the three conditions listed above, the Director
may approve an anticipated bypass after considering its adverse effects.
SECTION D: MONITORING AND RECORDS
Representative Sampling
Samples collected and measurements taken, as required herein, shall be characteristic of
the volume and nature of the permitted discharge. Analytical sampling shall be
performed during a representative storm event. Samples shall be taken on a day and time
that is characteristic of the discharge. All samples shall be taken before the discharge
joins or is diluted by any other waste stream, body of water, or substance. Monitoring
points as specified in this permit shall not be changed without notification to and
approval of the Director.
Part III Page 0 of 10 Pages

Permit No. NCS000003
2. Recording Results
For each measurement, sample, inspection or maintenance activity performed or collected
pursuant to the requirements of this individual permit, the permittee shall record the
following information:
a. The date, exact place, and time of sampling, measurements, inspection or
maintenance activity;
b. The individual(s) who performed the sampling, measurements, inspection or
maintenance activity;
C. The date(s) analyses were performed;
d. The individual(s) who performed the analyses:
e. The analytical techniques or methods used: and
f. The results of such analyses.
3. Flow Measurements
Where required, appropriate now measurement devices and methods consistent with
accepted scientific practices shall be selected and used to ensure the accuracy and
reliability of measurements of the volume of monitored discharges.
Test Procedures
Test procedures for the analysis of pollutants shall conform to the EMC regulations
published pursuant to NCGS 143-215.63 et. seq, the Water and Air Quality Reporting
Acts, and to regulations published pursuant to Section 304(g), 33 USC 1314, of the
Federal Water Pollution Control Act, as Amended, and Regulation 40 CFR 136.
To meet the intent of the monitoring required by this individual permit, all test procedures
must produce minimum detection and reporting levels and all data generated must be
reported down to the minimum detection or lower reporting level of the procedure.
Representative Outfall
If a facility has multiple discharge locations with substantially identical stormwater
discharges that are required to be sampled, the permittee may petition the Director for
representative outfall status. If it is established that the stormwater discharges are
substantially identical and the permittee is granted representative outfall status, then
sampling requirements may be performed at a reduced number of outfalls.
Part III Page 7 of 10 Pages

Permit No. NCS000003
6. Records Retention
Visual monitoring shall be documented and records maintained at the facility along with
the Stormwater Pollution Prevention Plan. Copies of analytical monitoring results shall
also be maintained on -site. The permittee shall retain records of all monitoring
information, including all calibration and maintenance records and all original strip chart
recordings for continuous monitoring instrumentation, and copies of all reports required
by this individual permit for a period of at least 5 years from the date of the sample,
measurement, report or application. This period may be extended by request of the
Director at any time.
Inspection and Entry
The permittee shall allow the Director, or an authorized representative (including an
authorized contactor acting as a representative of the Director), or in the case of a facility
which discharges through a municipal separate storm sewer system, an authorized
representative of a municipal operator or the separate storm sewer system receiving the
discharge, upon the presentation of credentials and other documents as may be required
by law, to:
a. Enter upon the permittee's premises where a regulated facility or activity is located
or conducted, or where records must be kept under the conditions of this
individual permit:
b. Have access to and copy, at reasonable times, any records that must be kept under
the conditions of this individual permit;
C. Inspect at reasonable times any facilities, equipment (including monitoring and
control equipment), practices, or operations regulated or required under this
individual permit; and
d. Sample or monitor at reasonable times, for the purposes of assuring individual
permit compliance or as otherwise authorized by the Clean Water Act, any
substances or parameters at any location.
SECTION E: REPORTING REQUIREMENTS
Discharge Monitoring Reports
Samples analyzed in accordance with the terms of this permit shall be submitted to the
Division on Discharge Monitoring Report forms provided by the Director. Submittals
shall be received by the Division no later than 30 days from the date the facility receives
the sampling results from the laboratory.
Part III Page S of 10 Paues

Permit No. NCS000003
Submitting Reports
Duplicate signed copies of all reports required herein, shall be submitted to the following
address:
Division of Water Quality
Water Quality Section
ATTENTION: Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
3. Availability of Reports
Except for data determined to be confidential under NCGS 143-215.3(a)(2) or Section
308 of the Federal Act, 33 USC 1318, all reports prepared in accordance with the terms
shall be available for public inspection at the offices of the Division of Water Quality. As
required by the Act, analytical data shall not be considered confidential. Knowingly
making any false statement on any such report may result in the imposition of criminal
penalties as provided for in NCGS 143-215.613 or in Section 309 of the Federal Act.
Non-Stormwater Discharges
If the storm event monitored in accordance with this individual permit coincides with a
non-stormwater discharge, the permittee shall separately monitor all parameters as
required under the non-stormwater discharge permit and provide this information with the
stormwater discharge monitoring report.
Planned Changes
The permittee shall give notice to the Director as soon as possible of any planned changes
at the permitted facility which could significantly alter the nature or quantity of pollutants
discharged. This notification requirement includes pollutants which are not specifically
listed in the individual permit or subject to notification requirements under 40 CFR Part
122.42 (a).
6. Anticipated Noncompliance
The permittee shall give notice to the Director as soon as possible of any planned changes
at the permitted facility which may result in noncompliance with the individual permit
requirements.
Bvpass
a. Anticipated bypass. If the permittee knows in advance of the need for a bypass, it
Shall submit prior notice, if possible at least ten days before the date of the bypass:
including an evaluation of the anticipated quality and affect of the bypass.
Part III Page 9 of t0 Pages

Permit No. NCS000003
b. Unanticipated bypass. The perrrtittee shall submit notice within 24 hours of
becoming aware of an unanticipated bypass.
8. Twenty-four Hour Reporting
The permittee shall report to the central office or the appropriate regional office any
noncompliance which may endanger health or the environment. Any information shall be
provided orally within 24 hours from the time the permittee became aware of the
circumstances. A written submission shall also be provided within 5 days of the time the
permittee becomes aware of the circumstances.
The written submission shall contain a description of the noncompliance, and its causes:
the period of noncompliance, including exact dates and times, and if the noncompliance
has not been corrected, the anticipated time compliance is expected to continue; and steps
taken or planned to reduce, eliminate, and prevent reoccurrence of the noncompliance.
The Director may waive the written report on a case -by -case basis if the oral report has
been received within 24 hours.
Other Noncompliance
The permittee shall report all instances of noncompliance not reported under 24 hour
reporting at the time monitoring reports are submitted.
10. Other Information
Where the permittee becomes aware that it failed to submit any relevant facts in an
application for an individual permit or in any report to the Director, it shall promptly
submit such facts or information.
Part III Paee loot 10 Pages

Permit No. NCS000003
PART IV LIMITATIONS REOPENER
This individual permit shall be modified or alternatively, revoked and reissued, to comply with
any applicable effluent guideline or water quality standard issued or approved under Sections
302(b) (2) (c), and (d), 304(b) (2) and 307(a) of the Clean Water Act, if the effluent guideline or
water quality standard so issued or approved: V
a. Contains different conditions or is otherwise more stringent than any effluent limitation in
the individual permit; or
b. Controls any pollutant not limited in the individual permit.
The individual permit as modified or reissued under this paragraph shall also contain any other
requirements in the Act then applicable.
PART V ADMINISTERING AND COMPLIANCE MONITORING FEE
REQUIREMENTS
The permittee must pay the administering and compliance monitoring fee within 30 (thirty) days
after being billed by the Division. Failure to pay the fee in timely manner in accordance with
15A NCAC 2H .0105(b)(4) may cause this Division to initiate action to revoke the Individual
Permit.
PART VI DEFINITIONS
Act
See Clean Water Act.
2. Arithmetic Mean
The arithmetic mean of any set of values is the summation of the individual values
divided by the number of individual values.
3. Allowable Non-Stormwater Discharges
This permit regulates stormwater discharges. Non-stormwater discharges which shall be
allowed in the stormwater conveyance system are:
(a) All other discharges that are authorized by a non-stormwater NPDES permit.
Parts IV, V and VI Pace I of 0

Permit No. NCS000003
(b) Uncontaminated groundwater, foundation drains, air -conditioner condensate
without added chemicals, springs, discharges of uncontaminated potable water,
waterline and fire hydrant flushings, water from footing drains, Flows from
riparian habitats and wetlands.
(c) Discharges resulting from fire -fighting or fire -fighting training.
Best Management Practices (BMPs)
Measures or practices used to reduce the amount of pollution entering surface waters.
BMPs may take the form of a process, activity, or physical structure.
Bypass
A bypass is the known diversion of stormwater from any portion of a stormwater control
facility including the collection system, which is not a designed or established operating
mode for the facility.
6. Bulk Storage of Liquid Products
Liquid raw materials, manufactured products, waste materials or by-products with a
single above ground storage container having a capacity of greater than 660 gallons or
with multiple above ground storage containers located in close proximity to each other
having a total combined storage capacity of greater than 1.320 gallons.
Clean Water Act
The Federal Water Pollution Control Act, also known as the Clean Water Act (CWA), as
amended, 33 USC 1251, et. seq.
8. Division or DWQ
The Division of Water Quality, Department of Environment and Natural Resources.
9. Director
The Director of the Division of Water Quality, the permit issuing authority.
10. EMC
The North Carolina Environmental Management Commission.
11. Grab Sample
An individual sample collected instantaneously. Grab samples that will be directly
analyzed or qualitatively monitored must be taken within the first 30 minutes of
discharge.
Part VI Page 2 of 6 Pages

Permit No. NCS000003
12. Hazardous Substance
Any substance designated under 40 CFR Part 116 pursuant to Section 311 of the Clean
Water Act.
13. Landfill
A disposal facility or part of a disposal facility where waste is placed in or on land and
which is not a land treatment facility, a surface impoundment, an injection well, a
hazardous waste long-term storage facility or a surface storage facility.
14. Municipal Separate Storm Sewer Svstem
A stormwater collection system within an incorporated area of local self-government such
as a city or town.
15. Overburden
Anv material of anv nature, consolidated or unconsolidated, that overlies a mineral
deposit, excluding topsoil or similar naturally -occurring surface materials that are not
disturbed by mining operations.
16. Permittee
The owner or operator issued a permit pursuant to this individual permit.
17. Point Source Discharge of Stormwater
Any discernible, confined and discrete conveyance including, but not specifically limited
to, any pipe, ditch, channel, tunnel, conduit, well, or discrete fissure from which
stormwater is or may be discharged to waters of the state.
13. Representative Storm Event
A storm event that measures greater than 0.1 inches of rainfall and that is preceded by at least 72
hours in which no storm event measuring greater than 0.1 inches has occurred. A single storm
event may contain up to 10 consecutive hours of no precipitation. For example, it' it rains for 2
hours without producing any collectable discharge, and then stops, a sample may be collected if a
rain producing a discharge begins again within the next t0 hours.
19. Representative Outfall Status
When it is established that the discharge of stormwater runoff from a single outfall is
representative of the discharges at multiple outfalls, the DWQ may grant representative
outfall status. Representative outfall status allows the permittee to perform analytical
monitoring at a reduced number of outfalls.
Part VI Page 3 ot6 Paces

Permit No. NCS000603
20. Rinse Water Discharge
The discharge of rinse water from equipment cleaning areas associated with industrial
activity. Rinse waters from vehicle and equipment cleaning areas are process
wastewaters and do not include washwaters utilizing any type of detergent or cleaning
agent.
21. Secondary Containment
Spill containment for the contents of the single largest tank within the containment
structure plus sufficient freeboard to allow for the 25-year, 24-hour storm event.
22. Section 313 Water Prioritv Chemical
A chemical or chemical category which:
a. Is listed in 40 CFR 372.65 pursuant to Section 313 of Title III of the Superfund
Amendments and Reauthorization Act (SARA) of 1986, also titled the Emergency
Planning and Community Right -to -Know Act of 1986;
b. Is present at or above threshold levels at a facility subject to SARA title II1.
Section 313 reporting requirements, and
C. That meet at least one of the following criteria:
(1) Is listed in Appendix D of 40 CFR part 122 on either Table II (organic
priority pollutants), Table Ill (certain metals, cyanides, and phenols) or
Table IV (certain toxic pollutants and hazardous substances);
(2) Is listed as a hazardous substance pursuant to section 311(b)(2)(A) of the
CWAat40CFR 116.4;or
(3) Is a pollutant for which EPA has published acute or chronic water quality
Criteria.
23. Severe Property Damage
Means substantial physical damage to property, damage to the control facilities which
causes them to become inoperable, or substantial and permanent loss of natural resources
which can reasonably be expected to occur in the absence of a bypass. Severe property
damage does not mean economic loss caused by delays in production.
24. Significant Materials
Includes, but is not limited to: raw materials; fuels; materials such as solvents, detergents,
and plastic pellets; finished materials such as metallic products; raw materials used in
food processing or production; hazardous substances designated under section 101(14) of
Part V 1 Pagc 4 of 6 Pages

Permit No. NCS000003
CERCLA; any chemical the facility is required to report pursuant to section 313 of Title
III of SARA; fertilizers; pesticides; and waste products such as ashes, slag and sludge that
have the potential to be released with stormwater discharges.
25. Significant Spills
Includes, but is not limited to: releases of oil or hazardous substances in excess of
reportable quantities under section 311 of the Clean Water Act (Ref: 40 CFR 1 10.10 and
CFR 117 2l) or section 102 of CERCLA (Ref: 40 CFR 302.4).
26. Stormwater Runoff
The flow of water which results from precipitation and which occurs immediately
following rainfall or as a result of snowmelt.
27. Stormwater Associated with Industrial Activitv
The discharge from any point source which is used for collecting and conveying
stormwater and which is directly related to manufacturing, processing or raw material
storage areas at an industrial site. Facilities considered to be engaged in "industrial
activities" include those activities defined in 40 CFR 122.26(b)(14). The term does not
include discharges from facilities or activities excluded from the NPDES program.
28. Stormwater Pollution Prevention Plan
A comprehensive site -specific plan which details measures and practices to reduce
stormwater pollution and is based on an evaluation of the pollution potential of the site.
29. Ten Year Design Storm
The maximum 24 hour precipitation event expected to be equaled or exceeded on the
average once in ten years. Design storm information can be found in the State of North
Carolina Erosion and Sediment Control Planning and Design Manual.
30. Total Flow
The flow corresponding to the time period over which the entire storm event occurs.
Total flow shall be either; (a) measured continuously, (b) calculated based on the amount
of area draining to the outfall, the amount of built -upon (impervious) area, and the total
amount of rainfall, or (c) estimated by the measurement of flow at 20 minute intervals
during the rainfall event.
31. Toxic Pollutant
Any pollutant listed as toxic under Section 307(a)(I) of the Clean Water Act.
Pan Vt Paee 5 ot6 Paees

Permit No. NCS000003
32. Upset
Means an exceptional incident in which there is unintentional and temporary
noncompliance with technology based permit effluent limitations because of factors
beyond the reasonable control of the permittee. An upset does not include
noncompliance to the extent caused by operational error, improperly designed treatment
or control facilities, inadequate treatment or control facilities, lack of preventive
maintenance, or careless or improper operation.
33. Vehicle Maintenance Activity
Vehicle rehabilitation, mechanical repairs, painting, fueling, lubrication, vehicle cleaning
operations, or airport deicing operations.
34. Visible Sedimentation
Solid particulate matter, both mineral and organic, that has been or is being transported
by water, air, gravity, or ice from its site of origin which can be seen with the unaided
eye.
35. 25-vear. 24 hour storm event
The maximum 24-hour precipitation event expected to be equaled or exceeded, on the
average, once in 25 years.
Part VI Page 6 of G Pa,_es

roe
AFFIDAVIT OF PUBLICATION
STATE OF NORTH CAROLINA,
COUNTY OF NEW HANOVER
PUBLIC NOTICE
STATE OF NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT
COMMISSION
Mail Service Center,
Raleigh. NC 27699-1617
NOTIFICATION OF INTENT TO
ISSUE A STATE NPDES PERMIT
On the basis of thorough .tart re-
view and application of Amos 21 of
Chapter 143. . General Statutes of
North Carolina, Public law 92-S03
and other lawful 'standard. and
regulatiome, the Neil Gasoline Emir
ronmental Management Commis-
eion proposes to Issue a permit to
discharge to per.ans listed below
on October 25, 1999, and aublen to
special condition..
Persons wishing to comment upon
or object to the proposed determi-
nation. are invited to Submit came
in wising to the above address. no
later than October 8. 1999. NI
comments received prior to that
date will be considered in the for-;
mulation of final determinations se- I
gasping the p'aposed permit A
pudic meeting may oe held whore !
the Director of the Olvieian of Water
Quality finds a sur,freoll dMree d
pubdp Interest In a proposed permit.
A copy of the draft permit is avail-
able by writing or paling the Division
of Water Quality, 1617 Mad Service
Center, Palelgh,. North Carolina
27699-1619.(919)733,5083.
The application and other informa-
tion may be Inepenad at there lo-
cation. during normal .flip. haure.
Capris of the information on file are
available upon request and Wyment
of the cast. of repmdummn. All
such comments or requestes to -
gelding a proposed permit should
be made reference to the NPDES
permit number house below.
DATE'. 09/01/99 David A. Goodrich
For Kerr T. Stevens Director
Division of water Cuoul
NPDES No, NCS000214 1t
Raynor Clark. Inc., PO. Box 250.
Tarboro. Norm Carolina. 27866 has
applied lot a permit to discharge
slosnmater associated with inous-
trml activities, at a faubry located at
Highway 421 North, Wilmington.,
North Carolina, New Hanover]
County, The facility discharges to
the ..to. at the Cape Fear River
Basin.
Before the undersigned, a Notary Public of said County and State,
JULIE JONES
who, being duly sworn or affirmed, according to the law, says that he/,she is
CLASSIFIED ADVERTISINU` MANAGER
of THE WILMINGTON STAR -NEWS. INC., a corporation organized and doing business under the
Laws of the State of North Carolina, and publishing a newspaper known as WILMINGTON
MORNING STAR & SUNDAY STAR -NEWS in the City of Wilmington
PUBLIC NOTICE STATE OF NORTH C
AROLINt ENV'IRONi IENTAL I`i F.2NAGENE
IVI CIJfhll bbl Lrl4 1611`1011 bET'V1C
F ilU S L. I C NOTICE
was Inserted in the aforesaid newspaper In space. and on dales as follows:
I st
1 Gr_r,
and at the time of such pubiiation K'dmingmn Star -News was a newspaper meeting all the
requirements and qualifmations prescribed by Sec. No. 1.59, G.S. of N.C.
U t_c_ASS TFIED AD':'ER sir_=
Title
Sworn or affirmed to, and subscribed before me. this 7 t h da.
c7 =GT
of=---' . A.D.. 19
In Testimony t4hereof. I have hereunto set ny hand and affixed my official seal.:.`.- �;3c an-;
year aforesaid.
NPOPS No. NCS000003 '� J N'dtary Public
7 Occ:"_a. C`^^.:c! -_many. RO.
Box 368. Castle Haynes, North 2 /t'i'�i JULY f Z�D4
Gasoline, 28429 has applied for a My commission enpircS ay of !!'
permit as discharge .tarmwalor es-
socialeo win industnm actiw,ties al a
facility located at 5W4 Holly Sheller _.
Read, Castle Haynes. New Hanover
Courtly. The facility discharges to
the waters of the Cape Fear River tvit with the advertisement thereto annexed it is adiudeed by the Court that the said publication was duly and properly
mad( Basin., .: . duly and legally served on the defendamfs),
This day of 19 _
MAIL TO
Clerk of Superior Court
11fid 'IG O[U/LGL r,
1-IU -�(

PUBLIC NOTICE
STATE OF NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
1617 Mail Service Center, Raleigh, NC 27699-1617
NOTIFICATION OF INTENT TO ISSUE A STATE NPDES PERMIT
On the basis of thorough staff review and application of Article 21 of Chapter 143, General Statutes of
North Carolina, Public Law 92-500 and other lawful standards and regulations, the North Carolina .
Environmental Management Commission proposes to issue a permit to discharge to persons listed below on
October 25, 1999, and subject to special conditions. ,
Persons wishing to comment upon or object to the proposed determinations are invited to submit same in
writing to the above address no later than October 8, 1999. All comments received prior to that date will be
considered in the formulation of final determinations regarding the proposed permit. A public meeting may
be held where the Director of the Division of Water Quality finds a significant degree of public interest in a
proposed permit.
A copy of the draft permit is available by writing or calling the Division of Water Quality, 1617 Mail
Service Center, Raleigh, North Carolina 27699-1617, [phone].
The application and other information may be inspected at these locations during normal office hours.
Copies of the information on file are available upon request and payment of the costs of reproduction. All
such comments or requests regarding a proposed permit should be make reference to the NPDES permit
number listed below.
nn 0 p�
Date l
FC�A_
NPDES No. NCS000214
Kerr T. Stevens, Director
Division of Water Qualit
Royster Clark, Inc., P. O. Box 250, Tarboro, North Carolina, 27886 has applied for a permit to discharge
stormwater associated with industrial activities at a facility located at Highway 421 North, Wilmington.
New Hanover County. The facility discharges to the waters of the Cape Fear River Basin.
NPDES No. NCS000003
Occidental Chemical Company, P. O. Box 368, Castle Haynes, North Carolina, 28429 has applied for a
permit to discharge stormwater associated with industrial activities at a facility located at 5804 Holly
Shelter Road, Castle Haynes, New Hanover County. The facility discharges to the waters of the Cape Fear
River Basin.

Staff Review and Evaluation
NPDES Stormwater Permit
Contact: Antonio Evans
Facility Name: Occidental Chemical Company
NPDES No.: NCS0000003
FaeilitV Location: Occidental Chemical Company
5408 Holly Shelter Road
Castle Hayne, NC
New Hanover County
Type of Activity : SIC 2819, Industrial Organic Chemicals
Receiving Stream Name and Classification: Northeast Cape Fear River, Class B Sw
J27NE
Proposed Permit Requirements: See attached draft permit
Compliance Schedule: See Part 111, Section A of attached draft permit
Basis for Monitoring Requirements: Recommend continued monitoring for
Chromium because of the potential of this parameter to be exposed to stormwater
runoff and also to obtain a greater number of data points to definitively rule out
continued monitoring for this parameter. Recommend continued for NO3/NO2 to
obtain a greater number of data points to definitively rule out continued monitoring
for this parameter.
Basis for Other Requirements:
(signature)
Permits and Engineering Supervisor: Bradley Bennett
(signature)
Response Requested Before:
(with attachments)
.soM
(date)
(date)
Page l of 2

Concurrence by Regional Office:
(signature) (date)
Water Quality Supervisor:
(signature) (date)
Regional Comments:
Page 2 of 2

Responsible Care• �f
A Public Commitment
CERTIFIED MAIL
P 427 891 992
RETURN RECEIPT REQUESTED
February 26, 1999
Individual Permit Renewal
Division of Water Quality/WQ Section
Stormwater and General Permits Unit
Post Office Box 29535
Raleigh, North Carolina 27626-0535
Attn: Tony Evans
Subject: NPDES Stormwater Permit Renewal
Occidental Chemical Company
Permit Number NCS000003
New Hanover County
Dear Sir:
Enclosed are the originals, and one set of copies of the information constituting an
application for renewal of Occidental's Stormwater Permit No. NCS000003.
If you have any questions concerning any of this information, please
contact John O'Janpa at [phone].
Yours truly,
-ntal Engineer
Enclosures
xc: G. Renzaglia
R. Hollinger
Occidental Chemical Corporation
oxr 5408 Holly Shelter Road, P.O. Box 368, Castle Hayne, North Carolina 28429
♦/ 910/675-7200 FAX:[phone]

1, 00r'
A 9 nwbbd� o�
NCDENR
NORTH CAROUNA DEPARTMENT OF
ENvIRONMENT AND NATURAL RESOURCES
PERMIT COVERAGE RENEWAL APPLICATION
National Pollutant Discharge Elimination System
Stormwater NPDES Permit NCS000003
Occidental Chemical Company
Permit Number NCS000003
New Hanover County
THIS APPLICATION MUST BE SIGNED AND RETURNED ALONG WITH THE REQUESTED
SUPPLEMENTAL INFORMATION TO THE DIVISION OF WATER QUALITY IN ORDER FOR YOUR
FACILITY TO QUALIFY FOR RENEWAL OF YOUR STORMWATER PERMIT NCS000003
PERMIT RENEWAL INFORMATION
The following is the information currently in our database for your facility.
Please review this information
carefully and make all corrections as necessary in the space provided to the
right of the current information.
Facility Name: Occidental Chemical Company
Mailing Address': POST OFFICE BOX 368
CASTLE HAYNE, NC 28429
Location Address: 5408 HOLLY SHELTER ROAD
CASTLE HAYNE, NC 28429
Facility Contact: GENE F. RENZAGLIA
Phone Number:
910 L,9.S �ZZy
Fax Number: No number on file
2/0 G-2 y �LQ /
E-mail address: No address on file
. This is the address to which all permit correspondence will be mailed
CERTIFICATION
1 certify that I am familiar with the info t contained in the application
and that to the best of my
knowledge and belie such information ' e, complete and accurate.
Signature �.
Date 9
Print or type name of person signing above
Title
Please return this completed renewal form, the information as requested on the next page, and any relevant
documentation to:
Individual Permit Renewal
Division of Water Quality/ WQ Section
Stormwater and General Permits Unit
Post Office Box 29535
Raleigh, North Carolina 27626-0535
Attn: Tony Evans

SUPPLEMENTAL INFORMATION REQUIRED FOR RENEWAL OF INDIVIDUAL NPDES
STORMWATER PERMIT
The following should accompany this submittal:
(Do not submit the site Stormwater Pollution Prevention Plan)
Initia
1. A copy of the current Site Map from the Stormwater Pollution Prevention Plan. The
location of industrial activities (including storage of materials, disposal areas, process areas
and loading and unloading areas), drainage structures, drainage areas for each outfall,
building locations and impervious surfaces should be clearly noted.
2. A summary of Analytical Monitoring results during the term of the existing permit (if your
permit required analytical sampling). Do not submit individual lab reports. The summary
can consist of a table including such items as outfall number, parameters sampled, lab
results, date sampled, and storm event data. *
3. A summary of the Visual Monitoring results. Do not submit individual lab reports. The
summary can consist of a table including such items as outfall number, parameters
surveyed, observations, and date monitoring conducted.
4. A summary of the Best Management Practices utilized at the permitted facility. Summary
should consist of a short narrative description of each BMP's in place at the facility. If the
- I , implementation of any BMP's is planned, please include information on these BMP's.
5. A short narrative describing any significant changes in industrial activities at the permitted
facility. Significant changes could include the addition or deletion of work processes,
changes in material handling practices, changes in material storage practices, and/or
changes in the raw materials used by the facility.
6. Certification of the development and implementation of a Stormwater Pollution Prevention
Plan for the permitted facility (Sign and return attached form).
* If the final year analytical monitoring of the existing permit term has not been completed
prior to filing the renewal submittal, then the last years monitoring results should be
submitted within 30 days of receipt of the laboratory reports. (i.e. do not withhold renewal
submittal waiting on lab results)
Representative storm sampling may now be conducted anytime during the year (the April to
November window has been eliminated) and the representative rainfall event is now
defined as a storm event that measures greater than 0.1 inches and is preceded by at least
72 hours in which no storm event measuring greater than 0.1 inches has occurred.

SUMMARY OF ANALYTICAL RESULTS and VISUAL RESULTS FOR NCS000003
DATE
OUTFALL
PARAMETER
Value
Units
flow MG
Rain inches hours
11/16/94
004
Cr
<0.010
mg/I
0.147
0.37
3.37
11/16/94
005
Cr
<0.010
mg4
0.256
0.37
3.37
11/16/94
004
NO3+NO2-N
<0.10
mg4
0.147
0.37
3.37
11/16/94
005
NO3+NO2-N
<0.10
mg/I
0.256
0.37
3.37
11/1/95
004
Cr
<0.010
mg4
0.242
0.61
6.00
11/1/95
005
Cr
<0.010
mg4
0.422
0.61
6.00
11/19/96
004
Cr
<0.010
mg/I
0.103
0.26
6.68
11/19/96
005
Cr
<0.010
mg4
0.180
0.26
6.68
11/29/97
004
Cr
<0.010
mg/I
0.203
0.51
4.55
11/29/97
005
Cr
<0.010
mg/I
0.352
0.51
4.55
11/15/98
004
Cr
<0.010
mg4
0.191
0.48
7.13
11/15/98
005
Cr
<0.010
mg/I
0.332
0.48
7.13
11/15/98
004
NO3+NO2-N
0.86
mg4
0.191
0.48
7.13
11/15/98
005
NO3+NO2-N
2.51
mg4
0.332
0.48
7.13
VISUAL INSPECTIONS
date
Time
Color
Odor
Clarity
Floating Solids
Suspended Solids
Foam
Sheen
Erosion
FALL 94
004
11/16/94
17:00
tannins
none
clear
none
slight
none
none
none
005
11/16/94
17:30
tannins
none
clear
slight
slight
none
none
none
SPRING
95
004
5/19/95
15:30
tannins
none
clear
none
none
none
none
none
005
5/19/95
15:45
tannins
none
clear
none
none
none
none
none
FALL 95
004
11/1/95
8:30
slight
none
excellent
none
none
none
none
none
005
11/1/95
8:45
tannins
none
good
leaves
none
none
none
none
SPRING
96
004
4/30/96
13:32
good
none
excellent
none
none
none
none
none
005
4/30196
14:00
slight
none
good
none
none
none
none
none
FALL 96
004
11/19/96
10:10
none
none
excellent
none
none
none
none
none
005
11/19/96
10:25
tannins
none
good
some leaves
none
none
none
none
SPRING
97
004
6/28/97
9:00
none
none
excellent
none
none
none
none
none
005
6/28/97
9:15
none
none
good
some leaves
none
none
none
none
FALL 97
004
12/12/97
15:10
none
none
goad
some leaves
none
none
none
some -issued work order
005
12/12/97
15:30
tannins
none
good
leaves
none
none
none
some -issued work order
SPRING
98
004
6130198
10:10
none
none
good
none
none
none
none
none
005
6/30/98
10:40
none
none
good
good
none
none
none
none
FALL 98
004
11/20/98
14:15
none
none
good
none
none
none
none
none
005
11/20/98
14:45
none
none
good
none
none
none
none
none

Summary of Best Management Practices utilized at Occidental Chemical
1) Good Housekeeping
The Castle Hayne Plant employees the use of Good Housekeeping practices to maintain areas,
which may contribute pollutants to stone water, discharges in a clean and orderly manner. Good
housekeeping practices are stressed in all employee training programs.
2) Preventive Maintenance
Castle Hayne has a preventive maintenance program in place for its plant operations which
involves the regular inspection and testing of plant equipment and operational systems to
uncover conditions which could result in discharges of chemicals to the plant storm water
conveyance system and to the surrounding surface waters
3) Removal, Cover, or Control of Industrial Activities
The Castle Hayne Plant strives to eliminate whenever possible the inclusion of process area
rainfall and runoff from entering storm water discharges. Storm water that falls in process areas
of the plant is either collected and used in the process or drained to an internal storm water
system for treatment before being discharged through permitted industrial discharges
4) Visual Inspections
Regular visual inspections are performed to insure that all the elements of the SWPPP are in
place and working properly. Such inspections are meant to be a routine look -over of the facility
to identify conditions, which may give rise to contamination of stone water run-off with pollutants
from the plant. Items covered by the visual inspections include areas around all process and
maintenance equipment; areas where spills and leaks have occurred in the past; material
storage areas; material handling areas; outdoor material processing areas; and waste
generation, storage, treatment and disposal areas. Formal inspections of the stormwater
conveyances are also conducted at least twice annually.
5) Spill Prevention and Response
Castle Hayne has developed the SPCC plan for the plant, which addresses the subject of spill
prevention and response. The purpose of the plan is to prevent and control discharges of oil
from spill events that have the potential to reach navigable waterways of both the State of North
Carolina and the United States. It details the duties and responsibilities of both trained and non -
trained responders. The plan is reviewed at least once every three years and will be amended
as necessary to include more effective spill prevention and control technology.

9
6) Sediment and Erosion Control
Plant areas that may be subject to routine vehicular traffic are covered with stone to minimize
erosion potential, while areas that are not exposed are grassed. Areas outside the main
production areas that have not been developed remain naturally wooded. Areas under
construction contain silt fences as needed to control sedimentation runoff.
7) Management of Runoff
All storm water falling in the process areas of the plant is either processed within the area or
collected and sent to the wastewater treatment area to be treated before discharging. Natural
vegetative swails and ditches are used for the conveyance of storm water to Outfalls 004 and
005. All areas draining to these outfalls travel across sections of natural vegetation to help
control sedimentation runoff.
8) Employee Training
Facility personnel responsible for managing hazardous wastes, materials, and oil, are required to
attend corporate hazardous waste management and HAZMAT training courses. All personnel
receive a minimum of first responder awareness level training, which includes familiarizing
employees with emergency response procedures. In addition, each site employee undergoes
annual stormwater pollution prevention training annually. Employee training records are
maintained on site.
9) Recordkeeping
Records are maintained on site for all formal inspections, preventative maintenance work,
employee training, and visual stone water inspections. In addition, copies of all agency
correspondence and Incident/Release reports are kept on file.

A
Significant Changes in Industrial Activities at Occidental Chemical
Significant changes that have occurred since the last permit application are:
1) Coal is not currently used in the process and is not currently stored on site. The former coal
storage pad east of the quench area is now empty.
2) 54,886 square feet of land west of the tank farm and north of the warehouse is now
leased to US Filter who operates a purification plant where a portion of Occidental's
Sodium Sulfate co -product is upgraded to detergent grade sodium sulfate. The
project was issued a Low Density Stormwater Project Permit No. SW8 960302

STORMWATER POLLUTION PREN ENTION`PLAN
DEVELOPMENT AND IMPLEMENTATION
CERTIFICATION
N.C. Division of Water Quality, Stormwater and General Permits Unit
Facility Name:
OCCIDENTAL CHEMICAL COMPANY
Permit Number:
NCS000003
Location Address:
5408 HOLLY SHELTER ROAD
CASTLE HAYNE, NC 28429
County:
NEW HANOVER
"I certify, under penalty of law, that the Stormwater Pollution Prevention Plan (SPPP) document and all
attachments were developed and implemented under my direction or supervision in accordance with a system
designed to assure that qualified personnel properly gather and evaluate the information required by the SPPP.
Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for
gathering the information, the information gathered is, to the best of my knowledge and belief, true, accurate, and
complete"
"I certify that the SPPP has been developed, signed and retained at the facility location and the SPPP has been fully
implemented at the named facility location in accordance with the terms and conditions of the stormwater general
permit."
"I am aware that there are significant penalties for falsifying information, including the possibility of fines and
imprisonment for knowing violations"
Sign (according to permit signatory requirements) and return this Certification. DO NOT SEND THE
STORMWATER POLLUTION PREVENTION PLAN WITH THE CERTIFICATION.
Signature
Print or type name of person signing above
Date
Title
SPPP Certification 2/99
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
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