NC0020443_Permit (Modification)_19990728

NPDES DOCUMENT SCANNING COVER SHEET
NPDES Permit: NC0020443
Columbia WWTP
Document Type: Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
. Permit Modification
Speculative Limits
201 Facilities Plan
Instream Assessment (67B)
Environmental Assessment (EA)
Permit
History
Document Date: July 28, 1999
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State of North Carolina
Department of Environment ` •
and Natural Resources _ _
Division of Water Quality --
James B. Hunt, Jr., Governor NCDENR
Wayne McDevitt, Secretary NORTH CAROLINA DEPARTMENT OF
Kerr T. Stevens, Director ENVIRONMENT AND NATURAL RESOURCES
July 28, 1999
Mr. Carlisle Harrell
Town Manager
103 Main Street
Columbia, North Carolina 27925
Subject: Modification of NPDES Permit NCO020443
Columbia Wk4'TP
Tyrrell County
Dear Mr. Harrell:
On March 1, 1999, the Division issued the subject permit. You have since requested (via the Washington
Regional Office) modification of several sampling parameters due to the reclassification of the treatment system
covered under the subject permit. This permit modification changes the following monitoring frequencies:
> Influent& effluent SOD5 monitoring is changed to Weekly
> Influent & effluent Total Suspended Solids monitoring is changed to Weekly
> Effluent NH3 (as N) monitoring is changed to Weekly
> Effluent Dissolved Oxygen monitoring is changed to Weekly
> Effluent Fecal Coliform monitoring is changed to Weekly
> Effluent Total Residual Chlorine monitoring is changed to 2/Week
> Effluent pH monitoring is changed to Weekly
Please find enclosed the revised permit page. This 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 150E of the North
Carolina General Statutes, filed with the Office of Administrative Hearings, Post Office Drawer 27447. Raleigh,
North Carolina 276 1 1-7447. Unless such demand is made, this decision shall be final and binding.
If you have any questions concerning these permit modifications, please contact Charles Weaver at (919)
733-5083, extension 51 1.
Sincerely.
1� l —4
rr T. Stevens
cc: Central Files
Raleigh Regional Office, Water Quality Section
Point Source Compliance Enforcement Unit
NPDES Unit
Technical Assistance & Certification Unit
1617 Mail Service Center,Raleigh,North Carolina 27699-1617 Telephone[phone] FAX[phone]
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Permit NCO020443
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL
During the period beginning on the effective date of•the permit and lasting until expiration, the
Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored
by the Permittee as specified below:
EFFLUENT' u x r LIMITS: MONITORING REQUIREMENTS. --
CHARACTERISTICS
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3 � Monthly , Weekly ; r Da1ly- 7 Measurement Sample Sample
Avera e,a - Avera ens ,i.Maximum: Fre uenc :; - :T. e _ : w: Location�;.�w
Flow 0.3 MGD Continuous Recording Influent or Effluent
80D, 5 day,20-Cl 15.0 mg/l 22.5 mg/I Weekly Composite Influent& Effluent
Total Suspended Solidsl 30.0 mg/l 45.0 mg/I Weekly Composite Influent& Effluent
NH3 as N 4.0 mg/l Weekly Composite Effluent
Dissolved Oxygen2,4 Weekly Grab Effluent
Fecal Coliform 2001100 ml 400/100 ml Weekly Grab Effluent
(geometric mean)4
Total Residual Chlorine 28u /1 2/Week Grab Effluent
Tem erature4 Daily Grab Effluent
Total Nitrogen Quarterly Composite Effluent
(NO2+NO3+TKN)4
Total Phosphorus4 Quarterly Composite Effluent
pH3,4 Weekly Grab Effluent
Salinity4 Weekly Instantaneous See Note 4
Conductivity4 Weekly Instantaneous See Note 4
TKN4 2/Month See Note 4 See Note 4
NH34 2/Month See Note 4 See Note 4
NO2+N034 2/Month See Note 4 See Note 4
Chlorophyll-a4 I 2/Month See Note 4 See Note 4
Notes:
1. The monthly average effluent BOD5 and Total. Suspended solids concentrations shall not exceed 15
percent of the respective influent value (85 percent removal).
2. The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/I.
3. The pH shall not be less than 6.8 standard units nor greater than 8.5 standard units and shall be
monitored as per the requirements outlined in Special Condition A. (3) on the Supplement to
Effluent Limitations and Monitoring Requirements Page.
4. Special monitoring requirements for Dissolved Oxygen, Temperature, Conductivity, Salinity, pH.
TKN, NH3,-NO2-'+ NO3, and Chlorophyll-a are included in Special Condition A. (3) on the
Supplement to Effluent Limitations and Monitoring Requirements Page.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Special permit conditions applicable to the subject facility are listed on the Supplement to
Effluent Limitations and Monitoring Requirements Page.

DIVISION OF WATER QUALITY
June 21, 1999
V
MEMORANDUM
� g 1999
To: Dave Goodrich, Supervisor �1�L
NPDES Unit
au�►tir
Through: Roger K. Thorpe, P.E. Group Leader B��w-SOAR SRAKGH
Permit Group
Washington Regional Office
From: Al Hodge, Environmental Enginee-rL
Washington Regional Office 1�.
Subject: NCO020443
Permit Modification
Town of Columbia
Tyrrell County
Mr. Carlisle Harrell, Manager for the Town of Columbia has
submitted an NPDES permit modification request in behalf of the
Town. The Town has undergone a reclassification of its wastewater
treatment plant from a Class III to a Grade II Biological Water
Control Treatment System. Mr. Harrell asks that the monitoring
requirements be modified to reflect their new classification. This
is the only requested change.
Please find attached a cover letter, a new effluent
limitations and monitoring page, and the letter from Mr. Harrell
requesting the change. The new effluent limitations and monitoring-
page was prepared in accordance with 15A NCAC 2B . 0508 (2) (d)
Domestic Wastewater and Other Facilities Discharging Primarily
Domestic-Water Quality Limited. The cover letter was prepare with a
format supplied by Mr. Tom Belnick of the NPDES Unit .
it is recommended the modification request be granted.
20443mem

TOWN of COL UMBIA
103 Main Street
P. O. Box 361
Columbia, North Carolina 27925
Tyn-ell
Phone [phone]
Fax [phone] R
11
July 12, 1999 J U L 1 4 1999
WASHINGTON REGIONAL OFFICE
TWO
Mr, Al Hodge
DEHNR
943 Washington Square Mall
Washington,NC 27889
Dear Mr. Hodge:
This letter is to follow-up our telephone conversation today on monitoring requirements
for our wastewater treatment plant which has been reclassified from Grade III to Grade 11.
Enclosed is a letter dated June 27, 1999, from DEHNR reclassifying our wastewater
treatment plant from Grade III to Grade 11. The Town is requesting a change in monitoring
requirements to reflect those of a Grade II plant.
Thank you for your assistance.
Si rely,
az'1'11� -
Carlisle Harrell
Manager
Enclosure

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NORTH CAROLINA DEPARTMENT OF
'r ENVIRONMENT AND NATURAL RESOURCES
® DIVISION OF WATER QUALITY
June 27, 1999
'JAMES B.HUNTJR.
CERTIFIED MAIL
. r`coVERNOR RETURN RECEIPT REQUESTED
..r<. .
Town of Columbia
Mr. Carlisle`Harrell
` wArnEWcDEvIT:T�.. P.O. BOX 361
' SE_TARY r
Columbia, North Carolina 27925
Subject_ Reclassification of Water Pollution Control System
Columbia Wastewater Treatment Plant
F.""�'tGOL'E��C SUL'L'INS '4 t
CHAIRMAR Permit No. NCO020443
- s
Tyrell County
Dear Mr. Harrell:
• � 4 In accordance with North Carolina General Statute § 90A-37, the Water Pollution -
Control System Operators Certification Commission is required to classify all water
- ' pollution control systems. The rating procedure, found at 15A NCAC 8G .0300, was
adopted by the Commission to classify water pollution control systems.
The Water Pollution Control System Operators Certification Commission hereby
y reclassifies the subject facility as a Grade 2 Biological Water Control Treatment
' System.
{ 4
As required by 15A NCAC 8G .0202 and your permit, you must designate an
' Operator in Responsible Charge (ORC) and Back-Up Operator of the appropriate
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= type and grade for the subject facility. Your facility requires a Grade 2 or higher
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Wastewater Treatment Plant Operator in Responsible Charge and Grade 1 or higher
""'�--------=� Back-Up Operator. Failure to designate a properly certified operator and back-up
operator constitutes a violation of the permit issued for this facility. This
reclassification does not affect monitoring requirements. Changes in monitoring
• requirements would require a permit modification.
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WATER POLLUTION CONTROL SYSTEM OPERATORS CERTIFICATION COMMISSION
a'
P.O. BOX 29535, RALEIGH,NORTH CAROLINA 27 62 6-05 35 PHONE [phone] FAX [phone]
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If you have any questions concerning this reclassification or the designation of an ORC and
Back-Up ORC, please contact Tony Arnold at 919/733-0026 ext.315.
Sincerely,
Dwight Lancaster, Supervisor -
Technical Assistance and Certification Unit
cc: Chuck Weaver, Permits and Engineering
Central Files
Washington Regional Office
TAC Files
Enclosure
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