NC0025135_PERMIT MODIFICATION_19950920

WDES DOCYIIEMT SCAMMIMC COVER SHEET
NPDES Permit:
NC0025135
Huffman Finishing WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Compliance
Speculative Limits
Instream Assessment (67b)
Environmental Assessment (EA)
Permit
History
Document Date:
September 20, 1995
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State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
September 20, 1995
Mr. Lee T. Huffman
Huffman Finishing Company
P. O. Box 170
Granite Falls, North Carolina 28630
Subject: Permit Modification
Permit No. NCO025135
Huffman Finishing WWTP
Caldwell County
Dear Mr. Huffman:
On June 19, 1995, the Division of Environmental Management issued NPDES Permit
No. NCO025135 to the Huffman Finishing Company. Staff review has determined that the
whole effluent toxicity test concentration after discharge relocation should be 96% instead
of 90%. The footnote on the effluent sheet for the relocated discharge and Part III,
Condition G have been revised to reflect this change. Please insert the enclosed pages and
discard the old sheets. This permit modification becomes effective immediately.
All other terms and conditions in the original permit remain unchanged and in full
effect. These modifications are issued pursuant to the requirements of North Carolina
General Statute 143-215.1 and the Memorandum of Agreement between North Carolina
and the U. S. Environmental Protection Agency dated December 6, 1983.
If any parts, measurement frequencies or sampling requirements contained in this
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, 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.
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10016 post -consumer paper

If you have any questions concerning this permit, please contact Mr. Greg Nizich at
telephone number [phone], ext. 541.
Sincerely,
�. Preston Howard, Yr., P.E.
cc: Central Files
Asheville Regional Office, Water Quality Section
Mr. Roosevelt Childress, EPA
Permits and Engineering Unit
Facility Assessment Unit (No BP)
Aquatic Survey & Toxicology Unit

A. O. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL
Permit No. NCO025135'
During the period beginning upon relocation of the discharge to the Catawba River and lasting until expiration, the Permittee is authorized to
discharge from outfall(s) serial number 001 into the Catawba River (Lake Hickory). Such discharges shall be limited and monitored by the
permittee as specified below:
Effluent Characteristic. Discharge Limitation: Monitoring Requirements
Lbs/day Units ecifv Measurement Sample 'Sample
Mon. Ava. Daily Max Mon. Avg. Daily Max. Frequency Tvpe Location
Flow 0.250 MGD Continuous Recorder I or E
BOD, 5 Day, 20 °C 68.5 135.8 3/Week Composite E
OOO 790.0 1581.8 3/Week Composite E
TSS 290.0 578.7 3/Week Grab E
Sulfides 2.6 5.3 Weekly Grab E
Chromium 1.3 2.6 Weekly Composite E
Phenols 20.0 µg/I Weekly Grab E
Fecal Coliform (geometric mean) 200.0 /100 ml 400.0 /100 ml 3/Week Grab E
Antimony 1.46 mg/I Weekly Composite E
Arsenic Quarterly+ Composite E
Barium Quarterly+ Composite E
* Sample locations: E - Effluent, I - Influent
**Acute Toxicity (Daphnid 48 Hour) LC50 96%; March, June, September and December, See Part III, Condition G.
+ Once toxicity problems are remedied, the Permittee may request that the Division remove monitoring requirements for these parameters.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored 3/week at the effluent by grab
sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
The permittee may also be required to monitor for other parameters as deemed necessary by the Director in future permits or Administrative
letters.

A. O. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL Permit No. NCO025135
During the period beginning upon relocation of the discharge to the Catawba River and lasting until expiration, the Permittee is authorized to
discharge from outfall(s) serial number 001 into the Catawba River (Lake Hickory). (Continued)
Effluent Characteristic.
Discharge Limitation: Monitoring
Requirements
Lbs/day Other Units (specify) Measurement
Sample
'Sample
Mon. Avg. Daily Max Mon. Ava. Daily Max. Frequency
7vpe
Location
Cadmium
Quarterly+
Composite
E
Chloride
Quarterly+
Grab
E
Copper
Quarterly+
Composite
E
Cyanide
Quarterly+
Grab
E
Fluoride
Quarterly+
Composite
E
Lead
Quarterly+
Composite
E
NH3 as N
Monthly
Composite
E
Nickel
Monthly
Composite
E
Silver
Monthly
Composite
E
Total Nitrogen (NO2+NO3+TKN)
Monthly
Composite
E
Total Phosphorus
Monthly
Composite
E
Total Residual Chlorine
2/Month
Grab
E
Zinc
Quarterly+
Composite
E
Acute Toxicity
Quarterly
Composite
E

Part III
Permit No. NC0025135
E. Nutrient Condition for Permits Without Phosphorus Limits
This permit may be modified, or revoked and reissued to include an effluent limitation on nutrients
for this discharge depending upon the following:
1. The findings of a study by the Division of Environmental Management determine nutrient
control is necessary.
2. Local actions do not successfully reduce the nutrient loading on the receiving waters.
3. The onset of problem conditions in the receiving waters.
F. ACUTE TOXICITY MONITORING (QUARTERLY)
The permittee shall conduct acute toxicity tests on a quarterly basis using protocols defined as
definitive in E.P.A. Document 60014-85/013 entitled "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, using effluent collected as a 24 hour composite. Effluent samples
for self -monitoring purposes must be obtained during representative effluent discharge below all
waste treatment. The first test will be performed within thirty days from the effective date of this
permit during the months of March, June, September and December.
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 Form (MR-1) for the month in which it was
performed, using the appropriate parameter code. Additionally, DEM Form AT-1 (original) is to
be sent to the following address:
Attention:
Environmental Sciences Branch
North Carolina Division of
Environmental Management
4401 Reedy Creek Road
Raleigh, N.C. 27607
Test data shall be complete and accurate and include all supporting chemical/physical measurements
performed in association with the toxicity tests, as well as all dose/response data. Total residual
chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for
disinfection of the waste stream.
Should any test data from either these monitoring requirements or tests performed by the North
Carolina Division of Environmental Management indicate potential impacts to the receiving stream,
this permit may be re -opened and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum
control organism survival and appropriate environmental controls, shall constitute an invalid test
and will require immediate retesting(within 30 days of initial monitoring event). Failure to submit
suitable test results will constitute noncompliance with monitoring requirements.
G. ACUTE TOXICITY PERMIT LIMIT (QRTRLY)
The permittee shall conduct acute toxicity tests on a quarterly basis using protocols defined as
definitive in E.P.A. Document 600/4-85/013 entitled "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, using effluent collected as a 24 hour composite. The LC50 of this
effluent using the previously stated methodology may at no time in any toxicity test be less than
96%. Effluent samples for self -monitoring purposes must be obtained during representative
effluent discharge below all waste treatment. The first test will be performed after thirty days from
the effective date of this permit during the months of March, June, September, and December.
The parameter code for this test if using Daphnia pulex is TAA3D.
if using Ceriodaphnia is TAA3B. All toxicity testing results
condition will be entered on the Effluent Discharge Monitoring
which it was performed, using the appropriate parameter code.
(original) is to be sent to the following address:
Attention:
Environmental Sciences Branch
North Carolina Division of
Environmental Management
4401 Reedy Creek Road
Raleigh, N.C. 27607
The parameter code for this test
required as part of this permit
Form (MR-1) for the month in
Additionally, DEM Form AT-1
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 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 any test data from either these monitoring requirements or tests performed by the North
Carolina Division of Environmental Management indicate potential impacts to the receiving stream,
this permit may be re -opened and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum
control organism survival and appropriate environmental controls, shall constitute an invalid test
and. will require immediate retesting(within 30 days of initial monitoring event). Failure to submit
suitable test results will constitute noncompliance with monitoring requirements.