NC0020567_Permit (Modification)_20011017

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
Gregory J. Thorpe, Ph.D., Acting Director
Mr. Grant Goings
Town of Elkin
P.O. Box 857
Elkin, North Carolina
Dear Mr. Goings:
28621
October 17, 2001
on
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT. AND NATURAL RESOURCES
Subject: Permit Modification
NPDES Permit NCO020567
Elkin WWTP
Surry County
The Division has reviewed and approved your request to modify the subject permit. This permit
modification reduces the monitoring frequencies.
Please find enclosed the revised permit page. The revised page should be inserted into your permit. The old
page may then be discarded. All other terms and conditions contained in the original permit remain
unchanged and in full effect. This permit modification is issued under 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 a written petition conforming to Chapter 150B of
the North Carolina General Statutes, filed with the Office of Administrative Hearings (6714 Mail Service
Center, Raleigh, North Carolina 27699-6714). Unless such demand is made, this decision shall be final and
binding.
If you have any questions concerning this permit modification, please contact Christie Jackson at telephone
number [phone], extension 538.
Sincerely,
�z?�Gregory J. Thorpe, Ph.D.
cc: Central Files
Winston-Salem Regional Office/Water Quality Section
Mr. Roosevelt Childress, EPA
NPDES Unit
Point Source Compliance Enforcement Unit
Aquatic Toxicology Unit
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

A (1). EFFLUENT LHVHTATIONS AND MONITORING REQUIREMENTS
Permit No. NCO020567
During the period beginning upon 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
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample
Location'
Flow
1.8 MGD
Continuous
Recordino
I or E
BOD, 5 day, 20°C 2
30.0 m /I
45.0 m /1
3/Week
Composite
I, E
Total Suspended Residue2
30.0 m /I
45.0 m /I
3/Week
Com osite
I, E
NH3 as N
Weekly
Composite
E
Fecal Coliform(geometric mean
200 / 100 ml
400 / 100 ml
3/Week
Grab
E
H3
3/Week
Grab
E
Total Residual Chlorine
28 /I
3/Week
Grab
E
Temperature °C
3/Week
Grab
E
Total Nitrogen (NO2 + NO3 + TKN)
Weekly
Composite
E
Total Phosphorus
Weekly
Composite
E
Chronic Toxicit 4
Quarterly
Composite
E
Notes:
1 Sample locations: E - Effluent, I — Influent.
2 The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the respective influent value (85%
removal).
3 The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
4 Chronic Toxicity (Ceriodaphnia) P/F at 0.87%', March, June, September, and December, See Part I, Special Condition A (2).
There shall be no discharge of floating solids or visible foam in other than trace amounts.