NC0005185_Technical Correction_19961024

State of North Carolina
Department of Environment,
Health and Natural Resources `
Division of Water Quality
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary C) C r%*J F1
A. Preston Howard, Jr., P.E., Director
October 24, 1996
Mr. J.W. Scrivner
Amoco Oil Company
375 Northridge Road, Suite 350
Atlanta, Georgia 30350-3296
Subject: NPDES Permit Modification
NPDES Permit No. NC0005185
Charlotte Terminal
Mecklenburg County a
Dear Mr. Scrivner: '
On August 2, 1996, the Division of Water Quality issued NPDES Permit No. NC0005185 to Amoco
Oil Company. A review of the permit file has indicated that the toxicity test for outfall 006 was
inadvertently omitted from the permit.
. r
The toxicity test is enclosed with this letter. All other terms and conditions contained in the original
permit remain unchanged and in full effect. This permit modification is issued pursuant to the y
requirements of North Carolina General Statutes 143-215.1 and the Memorandum of Agreement between s s
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 x
(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.
If you have any questions concerning these permit modifications, please contact Paul B. Clark at
telephone number(919)733-5083, extension 580.
Sincerely,
. Preston Howard, Jr., .E.
Enclosure
cc. Central Files
Mooresville Regional Office,Water Quality Section
1Permits and Engineering Unit )
Facility Assessment Unit
Aquatic Survey and Toxicology Unit
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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

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Part III NCO005185
E. ACUTE TOXICITY MONITORING (ANNUAL)
The permittee shall conduct annual toxicity tests using protocols defined as definitive in E.P.A.
Document EPA/600/4-90/027 entitled"Methods for Measuring the Acute Toxicity of Effluents to
Freshwater and Marine Organisms."The monitoring shall be performed as a Fathead Minnow
(Pimephales promelas) 24 hour static test. Effluent samples for self-monitoring purposes must be
obtained below all waste treatment. The 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 uN;
be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of a,
Water Quality }
4401 Reedy Creek Rd.
Raleigh, N.C. 27607 -
Test data shall be complete and accurate and include all supporting chemical/physical measurements
performed in association with the toxicity tests, as well as all dose/response data. Total residual
chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for
disinfection of the waste stream.
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Should any test data from either these monitoring requirements or tests performed by the North
Carolina Division of Water Quality indicate potential impacts to the receiving stream,this permit
may be re-opened and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum
control organism survival and appropriate environmental controls, shall constitute an invalid test.
Failure to submit suitable test results will constitute noncompliance with monitoring requirements.
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AAM Fathead 24 Version 3196