NC0003875_Approval_20020603

North Carolina
Department .of Environment and Natural Resources
Water Pollution Control System Operator Certification Commission
Michael F. Easley, Governor
William G. Ross Jr., Secretary
Coleen H. Sullins, Chairman
CERTIFIED MAIL
RETURN RECEIPT REQUESTED
Ms Natalie Sierra
Occidental Chemical Company
PO Box 368
Castle Hayne, NC 28429
A1775!vA
NCDENR
June 3, 2002
System: Occidental Chemical Outfall 001
Classification: Grade 1 Physical Chemical System
Subject: Designation of ORC and Backup ORC for Physical / Chemical
Permit: NC0003875
Dear Ms. Sierra:
The Water Pollution Control System Operators Certification Commission adopted Rule 15A
NCAC 8G .0306, Classification of Physical / Chemical Systems, effective April 1, 1999. In order
to insure the proper operation and maintenance of these systems, this Rule requires that all
systems permitted for a physical / chemical process to treat wastewater be classified as physical /
chemical systems.
If the subject physical / chemical system consists of systems designed for (1) the remediation
of contaminated groundwater, or (2) that utilizes a primarily physical process to treat
wastewaters, (with the exception of reverse osmosis, electrodialysis, and utrafiltration
systems), then that system shall be classified as a Grade I Physical / Chemical Water
Pollution Control System. Rule 15A NCAC 8G .0306(a)
If the subject physical / chemical system consists of systems that utilizes a primarily chemical
process to treat wastewaters (including those systems whose treatment processes are augmented
physical processes), they shall be classified as a Grade II Physical / Chemical Water Pollution
Control System. Reverse osmosis, electrodialysis, and utrafiltration systems shall also be
classified as Grade II Physical / Chemical Water Pollution Control System. Rule 15A NCAC 8G
.0306(b)
If the water pollution control system that has, as part of its treatment process, biological water
pollution control system that may be classified under Rule .0302, then that system shall be subject
to additional classification as a biological water pollution control system. Rule 15A NCAC 8G
.0306(c)
Any water pollution control system subject to classification under Rule .0302 of this Section,
utilizing a physical / chemical process to enhance an activated sludge or fixed growth process,
shall not be subject to additional classification. Rule 15A NCAC 8G .0306(d)
1618 Mail Service Center, Raleigh, North Carolina 27699-1618
Phone: 919 — 733-0026 C FAX: 919 — 733-1338
AN EQUAL OPPORTUNITY \ AFFIRMATIVE ACTION EMPLOYER - 50% RECYCLED / 10% POST CONSUMER PAPER

The Water Pollution Control System Operators Certification Commission hereby classifies your
system as a Grade 1 Physical Chemical System. This classification is based on information
submitted in your application for a NPDES permit and/or based on the information you provided
in the physical chemical classification survey that you completed during the months of April -May
2001.
As required by Rule 15A NCAC 8G .0202(2) and the subject permit, a certified Operator in
Responsible Charge (ORC) and back-up operator of the appropriate type must be
designated for each classified system. Your system requires an ORC and back-up operator
who hold valid physical / chemical operator certificates. Please complete and return the
enclosed designation form to this office by December 31, 2003. Failure to designate a properly
certified ORC and back-up operator is a violation of the permit issued for this system.
In accordance with Rule 15A NCAC 8G .0406(b), individuals presently working at physical /
chemical water pollution control systems holding a valid Grade I, II, III, or IV wastewater
treatment plant operator certification, may apply for a conditional operators physical / chemical
certificate without examination. He or she may do so if, he or she has one year experience and
has successfully completed a training school sponsored or co -sponsored by the Commission for
Grade I or Grade 2 Physical / Chemical Water Pollution Control System Operators. This
conditional certification allows the bearer to act as the ORC or Backup ORC of that System
only. This conditional certification must be renewed annually per section .0700 of the rules.
The Rules for this certification as well as others is found on the DWQ/Technical Assistance and
Certification Unit web page (http://h20.enr.state.nc.us/tacu).
N.C. American Water Works Association (NC AWWA) is offering a physical school that meets
the school requirements for operator's certification. There are two schools available now, July
23-26, 2002 in Morganton, N.C. and October 15-18, 2002 in Morehead City, N.C. Please contact
NC AWWA at [phone] for registration information.
If we can be of assistance or you have any questions concerning this requirement, please call
James Pugh at 919-733-0026, ext. 341 or e-mail: [e-mail].
Sincerely,
James Pugh, Education and Training Specialist
Technical Assistance and Certification Unit
Enclosures
cc: WIRO
Central Files
TAC Facility Files