NC0001899_permit modification_19970124

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Duality
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
Mr. Bill Boyer
AlliedSignal, Inc.
P.O. Box 166
Moncure, North Carolina 27559
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January 24,1997
Subject: Permit Modification
NPDES Permit NC0001899
AlliedSignal FIBERS
Chatham County
Dear Mr. Boyer:
On November 25, 1996, the Division issued. a modification to the subject permit which corrected the
required intervals for toxicity testing. After a review of the permit modification by the Aquatic Survey &
Toxicology Unit, it was determined that further clarification of the toxicity testing parameters was necessary.
Accordingly, the Division is issuing this permit modification. This modification includes revised requirements
for quarterly toxicity testing which reflect updated requirements from the US Environmental Protection Agency
as well as the Aquatic Survey & Toxicology Unit (Part III, Section E.). The modification also corrects the
parameter code for annual toxicity testing (Part III, Section F.).
Please find enclosed the modified pages of the permit referenced in the preceding paragraph. Replace
the original sections in your permit with the newer enclosed sections and discard the original pages. All other
terms and conditions contained in the original permit remain unchanged and in full effect. These permit
modifications are issued pursuant to the requirements of North Carolina General Statutes 143-215.1 and the
Memorandum of Agreement Between North Carolina and the U.S. Environmental Protection Agency.
If any parts, measurement frequencies or sampling requirements contained in this permit modification
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, an 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.
If you have any questions, please contact Charles Weaver at [phone] extension 511.
Sincerely,
cc: Central Files
Raleigh Regional Office, Water Quality Section
Roosevelt Childress, EPA
Permits and Engineering Unit
Facility Assessment Unit
Aquatic Survey and Toxicology Unit
t.A. Preston Howard, Jrd., P.E.
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled / 10% post -consumer paper

Part III Permit No. NC0001899
E. Acute Toxicity Permit Limit (QUARTERLY)
The permittee shall conduct acute toxicity tests on a quarterly basis using protocols defined as definitive in
E.P.A. Document EPA/600/4-90/027 entitled "Methods for Measuring the Acute Toxicity of Effluents to
Freshwater and Marine Organisms." The monitoring shall be performed as a Daphnia pulex or Ceriodaphnia
48 hour static test. The LC50 of this effluent using the previously stated methodology may at no time in any
toxicity test be less than 90%. Effluent samples for self -monitoring purposes must be obtained during
representative effluent discharge below all waste treatment. The tests will be performed during the months of
January, April, July and October.
The parameter code for this test if using Daphnia pulex is TAA3D. The parameter code for this test if using
Ceriodaphnia is TAA3B. All toxicity testing results required as part of this permit condition will be entered on
the Effluent Discharge Monitoring Form (MR-1) for the month in which it was performed, using the
appropriate parameter code. Additionally, DWQ Form AT-1 (original) is to be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of Water Quality
4401 Reedy Creek Road
Raleigh, North Carolina 27607
Test data shall be complete and accurate and include all supporting chemical/physical measurements
performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine of
the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste
stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required,
the permittee will complete the information located at the top of the aquatic toxicity (AT) test form indicating
the facility name, permit number, pipe number, county, and the month/year of the report with the notation of
"No Flow" in the comment area of the form. The report shall be submitted to the Environmental Sciences
Branch at the address cited above.
Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring
will begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement
will revert to quarterly in the months specified above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, then monthly
monitoring will begin immediately until such time that a single test is passed. Upon passing, this monthly test
requirement will revert to quarterly in the months specified above.
Should any test data from either these monitoring requirements or tests performed by the North Carolina
Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re -opened
and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival and appropriate environmental controls, shall constitute an invalid test and will require immediate
follow-up testing to be completed no later than the last day of the month following the month of the initial
monitoring.
F. Acute Toxicity Monitoring (ANNUAL)
The permittee shall conduct annual toxicity tests using protocols defined as definitive in E.P.A. Document
EPA/600/4-90/027 entitled "Methods for Measuring the Acute Toxicity of Effluents to Freshwater and Marine

Part III Permit No. NC0001899
Organisms." The monitoring shall be performed as a Fathead Minnow (Pimephales promelas) 24 hour static
test. Effluent samples for self -monitoring purposes must be obtained below all waste treatment. The permittee
will conduct one test annually, with the annual period beginning in January of the calendar year of the effective
date of the permit. The annual test requirement must be performed and reported by June 30. If no discharge occurs
by June 30, notification will be made to the Division by this date. Toxicity testing will be performed on the next
discharge event for the annual test requirement.
The parameter code for this test is TAE6C. All toxicity testing results required as part of this permit condition
will be entered on the Effluent Discharge Form (MR-1) for the month in which it was performed, using the
appropriate parameter code. Additionally, DWQ Form AT-1 (original) is to be sent to the address listed in
Section E (see above).
Test data shall be complete and accurate and include all supporting chemical/physical measurements
performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine of
the effluent toxicity sample must be measured and reported if chlorine is employed for disinfection of the waste
stream.
Should any test data from either these monitoring requirements or tests performed by the North Carolina
Division of Water Quality indicate potential impacts to the receiving stream, this permit may be re -opened
and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control organism
survival and appropriate environmental controls, shall constitute an invalid test and will require immediate
follow-up testing to be completed no later than the last day of the month following the month of the initial
monitoring.
G. Biocide Condition
The permittee shall not use any biocides except those approved in conjunction with the permit application. The
permittee shall notify the Director in writing at least ninety (90) days prior to instituting use of any additional
biocide used in the cooling system which may be toxic to aquatic life other than those previously reported to
the Division. Such notification shall include completion of Biocide Worksheet Form 101 and a map identifying
the discharge point and receiving stream.
H. Request for Reduction in OCPSF Monitoring
After monitoring for a minimum of three years, upon written request, OCPSF monitoring data will be reviewed
by the Division to determine if a reduction in monitoring frequency is warranted. Data submitted for review
should be in a tabular format for the sampling period under consideration.
I. When an approved analytical protocol with the appropriate minimum detection level is followed and
a result of "non -detectable" or "below quantitation limit" is obtained, the permittee will be considered to be in
compliance with the numerical permit limit for that pollutant.
J. Alternative Test Methods for OCPSF Parameters
The use of EPA test method 524.2 is allowed as a substitute for test methods in 40 CFR Part 136 to monitor
OCPSF parameters.