NC0050661_Permit Modification_19950331

NPDES DOCUMENT SCANNING COVER SHEET
Permit:
NC0050661
Macclesfield WWTP
NPDES
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
.
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Owner Name Change
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
March 31, 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
Mr. William Dilda
PO Box 185
Macclesfield, North Carolina 27852
Dear Mr. Dilda:
EDEEI-INJ I
March 31, 1995
Subject: NPDES Permit Modification
NPDES Permit No. NC0050661
Town of Macclesfield WWTP
Edgecombe County
On January 30, 1995, the Division of Environmental Management issued NPDES Permit No.
NC0050661 to the Town of Macclesfield. A review of the permit file has indicated that an error
was inadvertently made in the permit. Accordingly, we are forwarding herewith modifications
to the subject permit to correct the error. These permit modifications are issued to change the
chronic toxicity footnote on the effluent pages to reference Part III, Condition G and not
Condition E. Also, the toxicity condition in Part III was changed from Condition F to Condition G
Please find enclosed the amended effluent pages and Part III conditions page which should be
inserted into your permit. The old effluent pages and Part III conditions page should be
discarded. 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 modified in this permit
action 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 276,11-7447. Unless such demand is made, this decision shall be final and binding.
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]

If you have any questions concerning these permit modifications, please contact Mr. Mack
Wiggins at telephone number 919/733-5083, Ext. 542.
cc. Mr. Roosevelt Childress, EPA
Raleigh Regional Office
Central Files
Facility Assessment Unit
Aquatic Survey and Toxicology Unit
Sincerely yours,
julAk. Preston Howard, Jr., P.E.

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS SUMMER (April 1- October 31) Permit No. NC0050661
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number 001. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics
Flow
BOD, 5 day, 20°C**
Total Suspended Residue**
NH3 as N
Dissolved Oxygen ***
Fecal Coliform (geometric mean)
Total Residual Chlorine
Temperature
Total Nitrogen (NO2 + NO3 + TKN)
Total Phosphorus
Chronic Toxicity****
* Sample locations: E - Effluent,
samples shall be grab samples.
** The monthly average effluent
(85% removal).
Discharge Limitations
Monthly -Avg. Weekly = -Avat - -Daily----Max
0.175 MGD
6.0 mg/I 9.0 mg/I
30.0 mg/I 45.0 mg/I
2.0 mg/I
200.0 /100 ml 400.0 /100 ml
I - Influent, U - Upstream at least 100 feet, D - Downstream at
Monitoring Requirements
Measurement Sample *Sample
Frequency ---_ _ - Type - Location -
Continuous Recording I or E
Weekly Composite E, I
Weekly Composite E, I
Weekly Composite E
Weekly Grab E, U, D
Weekly Grab E, U, D
2/Week Grab E
Weekly Grab U,D
Quarterly Composite E
Quarterly Composite E
Quarterly Composite E
least 300 feet. Upstream and downstream
BOD5 and Total Suspended Residue concentrations shall not exceed 15 % of the respective influent value
*** The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/l.
* * * * Chronic Toxicity (Ceriodaphnia) P/F at 90%, January, April, July, and October; See Part III, Condition G.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored daily at the effluent by grab sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
CONTINUED... .

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS SUMMER (April 1- October 31) Permit No. NC0050661
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number 001. (Continued)
Effluent Characteristics
Conductivity
Temperature
Discharge Limitations
Units (specify)
Monthly ----Avg — - -Weekly Avg. --pally MaX
Monitoring
Measurement
Frequency �------
Daily
Requirements
Sample
Tyne
Grab
Grab
*Sample
Location
U, D
E

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS WINTER (November 1- March 31) Permit No. NC0050661
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number 001. (Continued)
Effluent Characteristics
Conductivity
Temperature
Discharge Limitations
Units (specify)
__ = Monthly -Avg Weekly ---Avg. Daily ==Max
Monitoring
Measurement
Frequency
Daily
Requirements
Sample
Type
Grab
Grab
*Sample
Location
U, D
E

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS WINTER (November 1- March 31) Permit No. NC0050661
During the period beginning on the effective date of the permit and lasting until expiration, the Pennittee is authorized to discharge from
outfall(s) serial number 001. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics
Flow
BOD, 5 day, 20°C**
Total Suspended Residue**
NH3 as N
Dissolved Oxygen ***
Fecal Coliform (geometric mean)
Total Residual Chlorine
Temperature
Total Nitrogen (NO2 + NO3 + TKN)
Total Phosphorus
Chronic Toxicity****
* Sample locations: E - Effluent,
samples shall be grab samples.
** The monthly average effluent
(85% removal).
*** The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/l.
**** Chronic Toxicity (Ceriodaphnia) P/F at 90%, January, April, July, and October; See Part III, Condition G.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored daily at the effluent by grab sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
CONTINUED... .
Discharge Limitations
Monthly Avg. = Weekly Avg.
0.175 MGD
8.0 mg/I 12.0 mg/I
30.0 mg/I 45.0 mg/I
3.0 mg/I
200.0 /100 ml 400.0 /100 ml
Daily —Max
I - Influent, U - Upstream at least 100 feet, D -
Frequency
Continuous
Weekly
Weekly
Weekly
Weekly
Weekly
2/Week
Weekly
Quarterly
Quarterly
Quarterly
Monitoring Requirements
Measurement Sample
Type
Recording
Composite
Composite
Composite
Grab
Grab
Grab
Grab
Composite
Composite
Composite
Downstream at least 300 feet.
*Sample
Location
I or E
E, I
E,
E
E, U, D
E, U, D
E
U,D
E
E
E
Upstream and downstream
BOD5 and Total Suspended Residue concentrations shall not exceed 15 % of the respective influent value

Part III Permit No. NC0050661
G. Chronic Toxicity Pass/Fail Permit Limit (Quarterly)
The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in:
1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic
Bioassay Procedure - Revised *September 1989) or subsequent versions.
The effluent concentration at which there may be no observable inhibition of reproduction or
significant mortality is 90% (defined as treatment two in the North Carolina procedure document).
The permit holder shall perform quarterly monitoring using this procedure to establish compliance
with the permit condition. The first test will be performed after thirty days from the effective date
of this permit during the months of January, April, July, and October. Effluent sampling for this
testing shall be performed at the NPDES permitted final effluent discharge below all treatment
processes.
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 parameter
code TGP3B.j 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 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 this monitoring requirement 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.
H. 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.