NC0036668_Permit (Issuance)_19960722

NPDES DOCYNENT $CANNIN`: COVER :SHEET
NC0036668
Kenansville WWTP
_,,,
NPDES Permit:
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
July 22, 1996
This document is printed on reuse paper - ignore any
content on the reYerse side

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
July 22,1996
Mayor Conrad Jenkins
Town of Kenansville
P.O. Box 370
Kenansville, North Carolina 28349
Alr*A41
Aginim....•••1"%mi j17
C0EHNR
Subject: NPDES Permit Issuance
Permit No. NC0036668
Kenansville WWTP
Duplin County
Dear Mayor Jenkins:
In accordance with the application for a discharge permit received on January 23, 1996, the Division is
forwarding herewith the subject NPDES permit. This permit is issued pursuant to the requirements of North
Carolina General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the US
Environmental Protection Agency dated December 6,1983.
If any parts, measurement frequencies or sampling requirements contained in this permit 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.
Please take notice this permit is not transferable. Part II, E.4. addresses the requirements to be followed
in case of change in ownership or control of this discharge.
This permit does not affect the legal requirements to obtain other permits which may be required by the
Division of Environmental Management or permits required by the Division of Land Resources, Coastal Area
Management Act or any other Federal or Local governmental permit that may be required.
If you have any questions concerning this permit, please contact Susan Wilson at telephone number (919)
733-5083, extension 555.
Sincerely,
Original Signed By
David Goo)jrich
A.1 reston Howard, Jr., P.E.
cc: Central Files
Wilmington Regional Office
Mr. Roosevelt Childress, EPA
Permits and Engineering Unit
Facility Assessment 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

Permit No. NC0036668
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended,
Town of Kenansville
is hereby authorized to discharge wastewater from a facility located at
Kenansville Wastewater Treatment Plant
north of Kenansville
NCSR 1301
Duplin County
to receiving waters designated as Grove Creek in the Cape Fear River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I,
II, III, and IV hereof.
The permit shall become effective September 1, 1996.
This permit and the authorization to discharge shall expire at midnight on July 31, 2001.
Signed this day July 22,1996.
Original Signed By
David A. Goodrich
A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Mangement Commission

Permit No. NC0036668
SUPPLEMENT TO PERMIT COVER SHEET
Town of Kenansville
is hereby authorized to:
1. Continue to operate a 0.17 MGD wastewater treatment facility consisting of influent pumps, grit
chamber, bar screen, single rotor oxidation ditch, secondary clarifier, chlorine contact chamber,
post aeration, continuous flow recording, aerated sludge holding tank, and sludge drying beds,
located at Kenansville Wastewater Treatment Plant, NCSR 1301, North of Kenansville, Duplin
County (See Part III of this Permit), and
2. After receiving an Authorization to Construct from the Division of Environmental Management,
construct a wastewater treatment facility not to exceed 0.3 MGD total flow, and,
3. Discharge from said treatment works at the location specified on the attached map into Grove
Creek which is classified Class C-Swamp waters in the Cape Fear River Basin.

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NPDES No. NC0036668
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A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS SUMMER (April 1- October 31) Permit No. NC0036668
During the period beginning on the effective date of the permit and lasting until expansion or 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 Discharge Limitations Monitoring
Measurement
Monthly Avg.
Flow 0.17 MGD
BOD, 5 day, 20°C** 11.0 mg/I
Total Suspended Residue** 30.0 m g/I
NH3asN 3.0 mg/I
Dissolved Oxygen***
Fecal Coliform (geometric mean) 200 /100 ml
Total Residual Chlorine
Temperature
Total Nitrogen (NO2 + NO3 + TKN)
Total Phosphorus
Conductivity
Weekly Avg, Daily Max
16.5 mg/I
45.0 mg/I
400 /100 ml
Frequency
Continuous
Weekly
Weekly
Weekly
Weekly
Weekly
2/Week
Daily *
Quarterly
Quarterly
Weekly
Requirements
Sample
Type
Recording
Composite
Composite
Composite
Grab
Grab
Grab
Grab
Composite
Composite
Grab
*Sample
Location
I or E
E, I
E, I
E
E, U, D
E,U,D
E
E, U, D
E
E
E,U,D
* Sample locations: E - Effluent, I - Influent, U - Upstream at NCSR 1301, D - Downstream at NC Hwy 11.
Instream samples shall be grab samples and shall be conducted weekly.
** The monthly average effluent BODS and Total Suspended Residue concentrations shall not exceed 15 % of the respective influent value (85
% removal).
*** The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/l.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored weekly at the effluent by grab
sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS WINTER (November 1 - March 31) Permit No. NC0036668
During the period beginning on the effective date of the permit and lasting until expansion or 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 Discharge limitations
Monthly Avg. Weekly Avg. Daily Max
Flow 0.17 MGD
BOD, 5 day, 20°C** 22.0 mg/I 33.0 mg/I
Total Suspended Residue** 30.0 m g/I 45.0 mg/I
NH3asN 6.0 mg/1
Dissolved Oxygen***
Fecal Coliform (geometric mean) 200 /100 ml 400 /100 ml
Total Residual Chlorine
Temperature
Total Nitrogen (NO2 + NO3 + TKN)
Total Phosphorus
Conductivity
* Sample locations: E - Effluent, I - Influent, U -
Monitoring
Measurement
Frequency
Continuous
Weekly
Weekly
Weekly
Weekly
Weekly
2/Week
Daily *
Quarterly
Quarterly
Weekly
Upstream at NCSR 1301, D - Downstream at NC Hwy 11.
Instreatn samples shall be grab samples and shall be conducted weekly.
Requirements
Sample
Type
Recording
Composite
Composite
Composite
Grab
Grab
Grab
Grab
Composite
Composite
Grab
*Sample
Location
1 or E
E, 1
E, I
E
E, U, D
E,U,D
E
E, U, D
E
E
E,U,D
** The monthly average effluent BODS and Total Suspended Residue concentrations shall not exceed 15 % of the respective influent value (85
% removal).
*** The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/1.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored weekly at the effluent by grab
sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS SUMMER (April 1- October 31) Permit No. NC0036668
During the period beginning upon expansion above 0.17 MGD 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 Discharge Limitations Monitoring Requirements
Measurement Sample *Sample
Monthly Avg, Weekly Avg. Daily Max Frequency Type Location
Flow 0.30 MGD Continuous Recording I or E
BOD, 5 day, 20°C** 6.0 mg/I 9.0 mg/I 3/Week Composite E, I
Total Suspended Residue** 30.0 mg/I 45.0 mg/1 3/Week Composite E, I
NH3 as N 2.0 mg/I 3/Week Composite E
Dissolved Oxygen*** 3/Week Grab E, U, D
Fecal Coliform (geometric mean) 200 /100 ml 400 /100 ml 3/Week Grab E,U,D
Total Residual Chlorine 28.0 µ g/ I 3/Week Grab E
Temperature Daily * Grab E, U, D
Total Nitrogen (NO2 + NO3 + TKN) Quarterly Composite E
Total Phosphorus Quarterly Composite E
Conductivity 3/Week Grab E,U,D
* Sample locations: E - Effluent, I - Influent, U - Upstream at NCSR 1301, D - Downstream at NC Hwy 11.
Stream samples shall be collected three times per week during June, July, August, and September and once per week during the remaining
months of the year.
** The monthly average effluent BODS and Total Suspended Residue concentrations shall not exceed 15 % of the respective influent value (85
% removal).
*** The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/1.
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.

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS WINTER (November 1- March 31) Permit No. NC0036668
During the period beginning upon expansion above 0.17 MGD 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:
Fffluent Characteristics Discharge Limitations
Monthly Avg. Weekly Avg, Daily Max
Flow 0.30 MGD
BOD, 5 day, 20°C** 12.0 mg/1 18.0 mg/I
Total Suspended Residue** 30.0 mg/1 45.0 mg/I
NH3 as N _ 4.0 mg/1
Dissolved Oxygen***
Fecal Coliform (geometric mean) 200 /100 ml 400 /100 mi
Total Residual Chlorine
Temperature
Total Nitrogen (NO2 + NO3 + TKN)
Total Phosphorus
Conductivity
Monitoring Requirements
Measurement Sample *Sample
Frequency Type Location
Continuous Recording I or E
3/Week Composite E, I
3/Week Composite E, I
3/Week Composite E
3/Week Grab E, U, D
3/Week Grab E,U,D
28.0 µg/I 3/Week Grab E
Daily * Grab E, U, D
Quarterly Composite E
Quarterly Composite E
3/Week Grab E,U,D
* Sample locations: E - Effluent, I - Influent, U - Upstream at NCSR 1301, D - Downstream at NC Hwy 11.
Stream samples shall be collected three times per week during June, July, August, and September and once per week during the remaining
months of the year.
** The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15 % of the respective influent value (85
% removal).
*** The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/1.
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.

FACILITY INFORMATION
Facility
NPDES No.
Design Flow (MGD)
Facility Class
Staff Review and Evaluation
NPDES Wastewater Permit
Kenansville WWTP
NC0036668
0.17, 0.3 MGD upon expansion
II existing, III upon expansion
STREAM CH
Stream Name
Stream Class
Sub -basin
Drainage Area (mi2)
S7Q10 (cfs)
W7Q10 (cfs)
30Q2 (cfs)
IWC (%)
ARACTERISTICS
Grove Creek
C -Sw
030622
21.2
0.5
1.6
0.0
34.5 @ 0.17 MGD
43.7 © 0.3 MGD
Proposed Changes
Parameters Affected
Basis for change(s)
Frequency changes
BOD5, NH3-N, TSS, DO, TRC
2B .0500 (Class III, WQ ltd.)
UPON EXPANSION
Compliance Schedule:
Special Condition(s):
Permits & Engineering Comments:
Monitoring frequencies for the expanded flow have been modified to reflect a Class III facility
as indicated on the staff report. All other limits/frequencies remain the same. The facility
has been within its SOC/permit limits during the past year.
Prepared by:
Regional Office Evaluation and Recommendations:

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS SUMMER (April 1 - October 31) Permit No. NC0036668
During the period beginning on the effective date of the permit and lasting until expansion or expiration, the Pcrmittee 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
Monthly Avg.
Flow 0.17 MGD
BOD, 5 day, 20°C** 11.0 mg/t
Total Suspended Residue** 30.0 mg/I
NH3 as N 3.0 mg/1
Dissolved Oxygen***
Fecal Coliform (geometric mean)
Total Residual Chlorine
Temperature
Total Nitrogen (NO2 + NO3 + TKN)
Total Phosphorus
Conductivity
Discharge Limitations Monitoring Requirements
Measurement Bample *Sample
Frequency Type Locatioq
Continuous Recording t 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
Daily ' Grab E, U, D
Quarterly Composite E
Quarterly Composite E
Weekly Grab E,U,D
* Sample locations: E - Effluent, I - Influent, U - Upstream at NCSR 1301, D - Downstream at NC Hwy 11.
Instream samples shall be grab samples and shall be conducted weekly.
** The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15 % of the respective influent value (85
% removal).
Weekly Avg, Daily Max
16.5 mg/I
45.0 m g/I
200 /100 ml 400 /100 ml
*** The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/1.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored weekly at the effluent by grab
sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

-A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS WINTER (November 1 - March 31) Permit No. NC0036668
During the period beginning on the effective date of the permit and lasting until expansion or 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 Characteristig1 Discharge Limitations
Monthly Avg.
Flow 0.17 MGD
BOD, 5 day, 20°C** 22.0 mg/I
Total Suspended Residue** 30.0 mg/I
NH3asN 6.0 mg/I
Dissolved Oxygen***
Fecal Coliform (geometric mean)
Total Residual Chlorine
Temperature
Total Nitrogen (NO2 + NO3 + TKN)
Total Phosphorus
Conductivity
Weekly Avg.
33.0 mg/I
45.0 mg/I
200 /100 ml 400 /100 ml
Daily Max
Monitoring
Measurement
Frequency
Continuous
Weekly
Weekly
Weekly
Weekly
Weekly
2/Week
Daily *
Quarterly
Quarterly
Weekly
*Sample locations: E - Effluent, I - Influent, U - Upstream at NCSR 1301, D - Downstream at NC Hwy 11.
Instreatn samples shall be grab samples and shall be conducted weekly.
Requirements
Sample
Type
Recording
Composite
Composite
Composite
Grab
Grab
Grab
Grab
Composite
Composite
Grab
*Sample
Location
I or E
E, I
E, I
E
E, U. D
E,U,D
E
E, U, D
E
E
E,U,D
** The monthly average effluent BODS and Total Suspended Residue concentrations shall not exceed 15 % of the respective influent value (85
% removal).
*** The daily average dissolved oxygen effluent concentration shall not be Tess than 6.0 mg/I.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and shall be monitored weekly at the effluent by grab
sample.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS SUMMER (April 1 - October 31) Permit No. NC0036668
During the period beginning upon expansion above 0.17 MGD 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
Conductivity
Discharge Limitations
Monthly Avg.
0.30 MGD
6.0 mg/I
30.0 mg/I
2.0 mg/I
200 /100 ml
Weekly Avg. Daily Max
9.0 mg/I
45.0 mg/I
400 /100 mi
28.0 µg/I
Monitoring
Measurement
frequency
Continuous
3/Week
3/Week
3/Week
3/Week
3/Week
3/Week
Daily *
Quarterly
Quarterly
3/Week
* Sample locations: E - Effluent, I - Influent, U - Upstream at NCSR 1301, D - Downstream at NC Hwy 11.
Stream samples shall be collected three times per week during
months of the year.
** The monthly average effluent BOD5 and Total Suspended
% removal).
Requirements
Sample
Type
Recording
Composite
Composite
Composite
Grab
Grab
Grab
Grab
Composite
Composite
Grab
*Sample
Location
I or E
E, 1
E, I
E
E, U, D
E,U,D
E
E, U, D
E
E
E.U,D
June, July, August, and September and once per week during the remaining
Residue concentrations shall not exceed 15 % of the respective influent value (85
*** The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/l.
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.

A. (). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS WINTER (November 1 - March 31) Permit No. NC0036668
During the period beginning upon expansion above 0.17 MGD 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 Discharge Limitations Monitoring Requirements
Measurement Sample *Sample
Monthly Avg. Weekly Avg. Daily Max Frequency Type Location
Flow 0.30 MGD Continuous Recording I or E
BOD, 5 day, 20°C— 12.0 mg/I 18.0 mg/I 3/Week Composite E, I
Total Suspended Residue** 30.0 mg/I 45.0 mg/I 3/Week Composite E, I
NH3 as N 4.0 m g/ I 3/Week Composite E
Dissolved Oxygen*** 3/Week Grab E, U, D
Fecal Coliform (geometric mean) 200 /100 ml 400 /100 ml 3/Week Grab E,U,D
Total Residual Chlorine 28.0 µg/1 3/Week Grab E
Temperature Daily * Grab E, U, D
Total Nitrogen (NO2 + NO3 + TKN) Quarterly Composite E
Total Phosphorus Quarterly Composite E
Conductivity 3/Week Grab E,U,D
* Sample locations: E - Effluent, I - Influent, U - Upstream at NCSR 1301, D - Downstream at NC Hwy 11.
Stream samples shall be collected three times per week during June, July, August, and September and once per week during the remaining
months of the year.
** The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15 % of the respective influent value (85
% removal).
*** The daily average dissolved oxygen effluent concentration shall not be less than 6.0 mg/l.
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.

-1Q'OW (fr(4- 1/
GKEX88/MP n 03/25/96
COMPLIANCE EVALUATION ANALYSIS REPORT PAGE 1
PERMIT--NC0036668 PIPE--001 REPORT PERIOD: 9502-9601 LOC---E
FACILITY--KENANSVILLE, TOWN-WWTP/NCSR#.. DESIGN FLOW-- .1700 CLASS--2
LOCATION--KENANSVILLE REGION/COUNTY--08 DUPLIN
50050 00310 00530 00610 31616 50060 00300 00010
MONTH Q/MGD BOD RES/TSS NH3+NH4- FEC COLI CHLORINE DO TEMP
LIMIT S .2100 F 22.00 F 30.0 F 6.00 F 200.0 NOL NOL NOL
95/02 .1866 2.88 1.2 .09 1.1 73.714 8.53 11.82
95/03 .1912 4.42 1.7 .42 .0 86.451 7.80 16.54
LIMIT S .2100 F 11.00 F 30.0 F 3.00 F 200.0 NOL NOL NOL
95/04 .1506 5.45 3.2 .91 .0 77.000 7.58 18.00
95/05 .1429 3.84 10.0 .58 .0 80.000 7.52 21.22
95/06 .1985 2.65 6.0 .10 1.2 88.666 7.47 23.26
95/07 .2041 3.57 7.7 .63 .0 88.709 7.22 25.19
95/08 .1592 4.54 8.6 .39 .0 70.000 6.93 26.19
95/09 .1444 2.25 3.2 .17 1.2 66.000 7.28 24.26
95/10 .1510 2.75 4.2 .00 1.4 63.225 7.46 21.70
LIMIT S .2100 F 22.00 F 30.0 F 6.00 F 200.0 NOL NOL NOL
95/11 .1590 3.14 9.6 .11 1.5 54.666 8.15 15.93
95/12 .1537 2.80 9.5 .00 .0 58.709 8.57 12.90
96/01 .1586 2.32 6.2 .00 .0 55.483 8.47 11.77
AVERAGE .1666 3.38 5.9 .28 .5 71.885 7.74 19.06
MAXIMUM .3170 6.40 17.0 1.68 4.0 130.000 9.30 27.00
MINIMUM .1180 LESSTHAN LESSTHAN LESSTHAN LESSTHAN 40.000 6.80 10.00
UNIT MGD MG/L MG/L MG/L #/100ML UG/L MG/L DEG.0

GKEX88/MP
COMPLIANCE EVALUATION ANALYSIS REPORT
03/25/96
PAGE 2
PERMIT--NC0036668 PIPE--001 REPORT PERIOD: 9502-9601 LOC---E
FACILITY--KENANSVILLE, TOWN-WWTP/NCSR#.. DESIGN FLOW-- .1700 CLASS--2
LOCATION--KENANSVILLE REGION/COUNTY--08 DUPLIN
00095 00400 00600 00665
MONTH CNDUCTVY PH TOTAL N PHOS-TOT
LIMIT NOL 9.0 6.0 NOL NOL
95/02 496.6 7.4-7.1
95/03 504.0 7.3-7.0
LIMIT NOL 9.0 6.0 NOL NOL
95/04 568.7 7.4-7.1
95/05 576.0 7.4-7.3 2.900 3.1400
95/06 418.7 7.4-7.2
95/07 497.5 7.3-7.1
95/08 581.0 7.5-7.2 2.230 3.1300
95/09 629.0 7.6-7.4
95/10 611.0 7.6-7.5
LIMIT NOL 9.0 6.0 NOL NOL
95/11 598.6 7.6-7.3
95/12 585.5 7.6-7.3 17.200 2.3100
96/01 564.6 7.6-7.5
AVERAGE 552.6 7.443 2.8600
MAXIMUM 642.0 7.600 17.200 3.1400
MINIMUM 401.0 7.000 2.230 2.3100
UNIT UMHOS/CM SU MG/L MG/L

GKEX88/MP
• _I -" •
COMPLIANCE EVALUATION ANALYSIS REPORT
03/25/96
PAGE 1
PERMIT--NC0036668 PIPE--001 REPORT PERIOD: 9402-9501 LOC---E
FACILITY--KENANSVILLE, TOWN-WWTP/NCSR#.. DESIGN FLOW-- .1700 CLASS--2
LOCATION--KENANSVILLE REGION/COUNTY--08 DUPLIN
50050 00310 00530 00610 31616 50060 00300 00010
MONTH Q/MGD BOD RES/TSS NH3+NH4- FEC COLI CHLORINE DO TEMP
LIMIT F .1700 F 22.00 F 30.0 F 6.00 F 1000.0 NOL F 6.00 NOL
94/02 .1776F .95 5.0 .00 .0 .203 8.27 13.35
94/03 .1840F 1.70 6.0 .00 .0 .216 7.77 15.12
LIMIT F .1700 F 11.00 F 30.0 F 3.00 F 1000.0 NOL F 6.00 NOL
94/04 .1810F 1.85 1.0 .49 .0 .196 7.50 18.46
94/05 .1740F 1.40 5.5 .00 .0 .200 7.67 20.80
94/06 .1856F 2.60 7.0 .00 .0 7.56 24.73
LIMIT F .1700 F 11.00 F 30.0 F 3.00 F 200.0 NOL NOL NOL
94/07 .1896F 5.00 9.0 .00 .0 7.34 26.67
94/08 .1871F 2.30 3.5 .10 .0 7.61 25.61
94/09 .1745F 1.20 6.5 .00 .0 81.666 7.68 24.33
94/10 .1487 3.10 2.0 .00 .0 87.741 7.82 20.32
LIMIT F .1700 F 22.00 F 30.0 F 6.00 F 200.0 NOL NOL NOL
94/11 .1389 1.20 7.0 .00 .0 82.000 7.87 17.43
94/12 .1520 1.70 3.0 .00 1.4 66.774 8.07 15.51
LIMIT S .2100 F 22.00 F 30.0 F 6.00 F 200.0 NOL NOL NOL
95/01 .1651 2.75 5.7 .00 1.9 71.935 8.43 13.06
AVERAGE .1715 2.14 5.1 .04 .2 43.436 7.79 19.61
MAXIMUM .2690 5.10 17.0 .98 6.0 100.000 8.70 27.00
MINIMUM .1160 .50 LESSTHAN LESSTHAN LESSTHAN .100 7.10 12.00
UNIT MGD MG/L MG/L MG/L #/100ML UG/L MG/L DEG.0

GKEX88/MP
COMPLIANCE EVALUATION ANALYSIS REPORT
03/25/96
PAGE 2
PERMIT--NC0036668 PIPE--001 REPORT PERIOD: 9402-9501 LOC---E
FACILITY--KENANSVILLE, TOWN-WWTP/NCSR#.. DESIGN FLOW-- .1700 CLASS--2
LOCATION--KENANSVILLE REGION/COUNTY--08 DUPLIN
00095 00400 00600 00665
MONTH CNDUCTVY PH TOTAL N PHOS-TOT
LIMIT 9.0 6.0 NOL NOL
94/02 7.5-7.4
94/03 7.4-7.3 19.500 3.1500
LIMIT 9.0 6.0 NOL NOL
94/04 7.5-7.3
LIMIT NOL 9.0 6.0 NOL NOL
94/05 7.5-7.4
94/06 7.7-7.5
LIMIT NOL 9.0 6.0 NOL NOL
94/07 7.6-7.4
94/08 7.7-7.5 1.500 1.1900
94/09 7.6-7.4
94/10 7.7-7.4
LIMIT NOL 9.0 6.0 NOL NOL
94/11 7.5-7.3
94/12 7.4-7.3 12.700 1.4200
LIMIT NOL 9.0 6.0 NOL NOL
95/01 502.7 7.4-7.2
AVERAGE 502.7 11.233 1.9200
MAXIMUM 518.0 7.700 19.500 3.1500
MINIMUM 490.0 7.200 1.500 1.1900
UNIT UMHOS/CM SU MG/L MG/L

SOC PRIORITY PROJECT: YES
To: Permits and Engineering Unit
Water Quality Section
Attention:Susan Wilson (Review Engineer)
Date: 2/21/96
NPDES STAFF REPORT AND RECOMMENDATION
County: Duplin
Permit No. NO0036668
PART I - GENERAL INFORMATION
1. Facility and Address: Town of Kenansville WWTP
Post Office Box 370
Kenansville, NC 28349-0370
2. Date of Investigation: 2/21/96
3. Report Prepared by: Steve West
4. Person Contacted and Telephone Number:
Richard Brown, ORC [phone]
RECEIVED FEB 2 3 iggi
5. Directions to Site: Travel north in Kenansville on NCSR 1301.
After crossing Grove Creek, travel 0.4 mile to entrance road
to WWTP on the right.
6. Discharge Point:
Latitude: 34° 58' 14" Longitude: 77° 58' 01"
USGS Quad No: H 27 NW USGS Quad Name: Kenansville, NC
7. Site size and expansion area consistent with application?
N/A
8. Topography: The site is flat and approximately 25 feet msl.
9. Location of nearest dwelling: Approximately 1/4 mile.
10 Receiving stream or affected surface waters:
GYb J'e-G-1..4-•-
a. Classification: Class "C-Sw" waters
b. River Basin and Subbasin No.: 03 06 22
c. Describe receiving stream features and pertinent
downstream uses: Low -flow stream used for
infrequent fishing.

PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted: 0.17 MGD
0.3 MGD upon expansion
b. What is the current permitted flow limit? 0.17 MGD,
0.21 MGD SOC, 0.3 MGD upon expansion
c. Actual treatment capacity of the current facility:
0.17 MGD
d. Date and construction activities allowed by previous
Authorizations to Construct issued in the previous two
years: None, at A to C is pending for construction of
the new 0.3 MGD facility.
e. Please provide a description of existing wastewater
treatment facilities: The existing facility consists of
an influent bar screen, grit chamber, single rotor
oxidation ditch, secondary clarifier, gaseous chlorine
contact chamber, post aeration, ultrasonic flow recorder,
aerated sludge holding tank, and sludge drying beds.
f. Please provide a description of proposed wastewater
treatment facilities: The proposed facility would
consist of an influent bar screen, grit chamber, dual
185,115 gallon single rotor oxidation ditches, dual
396,000 gallon secondary clarifiers, gaseous chlorine
contact chamber with - 1 hour contact time at 300,000
gpd, a 15,320 gallon aeration tank with a 1 hp floating
aerator, a 77,531 gallon aerated sludge digester with a
15 hp floating aerator, 5000 square feet of sludge drying
beds, and a 175 KW standby power generator. In addition,
the existing oxidation ditch will be used as an emergency
holding structure; the existing drying beds and
continuous recording flow meter will continue to be used,
and the existing chlorine contact basin will be converted
to a dechlorination basin.
g-
Possible toxic impacts to surface waters: Currently
chlorine, dechlorination facilities proposed.
h. Pretreatment Program: Not needed.
2. Residuals handling and utilization/disposal scheme:
Sludge is dried and disposed of through either:
McGill Environmental Permit No. WQ0006816
Russell Lewis Permit No. WQ0000455
3. Treatment plant classification: Class II existing
Class III upon expansion

4. SIC Code: Primary - 4952
Wastewater Code Primary: 01 Secondary: N/A
Main Treatment Unit Code: 085X3
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant
Funds or are any public monies involved? No
2. Special monitoring or limitations requests: None
3. Important SOC, JOC or Compliance Schedule dates:
Date: 9/14/95 (amended)
Submission of Plans and Specifications: 10/30/94 (met)
Begin Construction: 7/31/96 (pending amendment)
Complete Construction: 6/30/97 (pending amendment)
4. Alternative Analysis Evaluation: Alternatives were considered
and summarized in the Town's 201 Facilities Plan. Spray
irrigation was considered logistically feasible but not
economically feasible when compared to constructing a new
oxidation ditch -type plant.
5. Other Special Items: None
PART
IV - EVALUATION AND RECOMMENDATIONS
The Town is
amendment is
The existing
at and above
exception of
SOC to begin
currently under SOC EMC WQ 94-03 AdI, and another
pending due to a delay in the plan approval process.
plant is in good mechanical condition and is operating
the design rate and meeting all permit limits with the
flow. Construction of the new plant is scheduled by
on or before July 31, 1996.
It is recommended that a draft permit be prepared and placed
at public notice. If no significant adverse public comment is
received, it is recommended NPDES Permit No. NC0036668 be
reissued to the Town of Kenansville in accordance with the
Cape Fear River basin -wide permitting strategy.
i1411 ture of reportnp parer
Date
(------- &Ceti -Ai
Water uality Regional Supervisor Date
cc: Technical Support Branch
Wilmington Regional Office Files
Central Files

RATING SCALE FOR CLASSIFICATION OF WATER POLLUTION CONTROL SYSTEMS
Name of Facility: % 4 w op' koAm/V.S 1//c, C, C
Owner or Contact Person: kicHA4eb 820ut -T v ej cro•e of L.,c
Mailing Address: Po •89se 4L?0 */0,9N5 v/ // , �l.l c a�� 4i 9
County: 7)v,z-/A/ Telephone: [phone]a,q
Present Classification: New Facility Existing Facility v
NPDES Per. No. NC00 3h' ' ? Nondisc. Per. No.WQ omo (# Health Dept.Per No._____
Rated by: Telephone: 39 5- 3 Soo Date: /Z/7/s
Reviewed by: Health Dept. Telephone:
ORC: giCked ,3/06,,4
Check Classification(s): Subsurface
Wastewater Classification: (Circle One)
Regional Office
Central Office
Grade: it
Spray irrigation
III IV
Telephone:
Telephone:
Telephone: Z55-°369
Land Application
Total Points: 1/5
jN-PLANT PROCESSES AND RELATED CONTROL EQUIPMENT WHICH AREAN INTEGRAL PART OF INDUSTRIAL PRODUCTION SHAL NOT IE
S SIDERED WASTE TREATMB`r; FOR THE PURPOSE OF CLASSIFICATION ALSO SEPT C TAM< SYSTBAS r�nNS1S11NG OLY OF SF TANK
AND GRAVITY NITRIFICATION LINES ARE EXEMPT FROM CLASSIFICATIOIN
SISSURFACE CLASSIFICATION
(check all units that apply)
1 . septic tanks
2. pump tanks
3. siphon or pump -dosing systems
4. sand filters
5. grease trap/interceptor
6. oil/water separators
7. gravity subsurface treatment and disposal:
8. pressure subsurface treatment and disposal:
In addition to the
be rated using the
SPRAY RRR/CATiON CLASSIFICATION
(check all units that apply)
1, preliminary treatment (definition no. 32 )
2. lagoons
3. septic tanks
4Lpump tanks
5. pumps
6sand filters
7. ,grease trap/interceptor
8. oil/water separators
9disinfection
10. chemical addition for nutrient/algae control
11. spray Irrigation of wastewater
above classifications, pretreatment of wastewater In excess of these components shell
point rating system and will require an operator with an appropriate dual certification.
LAND APPLICATION/RESIDUALS CLASSIFICATION (Applies only to permit holder)
1. Land application of biosolids, residuals or contaminated soils on a designated site.
WASTEWATER TREATMENT FACIUTY CLASSIFICATION
The following systems shall be assigned a Class i classification, yntes . the flow is of a significant quantity or the technology Is unusually
complex, to require consideration by the Commission on a case -by -case basis: (Check if Appropriate)
1. OiVwater Separator Systems consisting only of physical separation, pumps and disposal;
2. Septic Tank/Sand Filter Systems consisting only of septic tanks, dosing apparatus, pumps,sand fitters, disinfection
and direct discharge;
3_ Lagoon Systems consisting only of preliminary treatment, lagoons, pumps, disinfection, necessary chemical treatment for
algae or nutrient control, and direct discharge;
4. Closed -loop Recycle Systems;
5 Groundwater Remediation Systems consisting only of oil/water separators, pumps, air -stripping, carbon adsorption, disinfection
and disposal;
6.Aquaculture operations with discharge to surface waters;
7. Water Plant sludge handling and back -wash water treatment;
8. Seafood processing consisting of screening and disposal.
9Single-family discharging systems, with the exception of Aerobic Treatment Units, will be classified if permitted after July 1,
1993 or if upon Inspection by the Division, It is found that the system is not being adequately operated or maintained. Such
systems will be notified of the classification or reclassification by the Commission, in writing.

•
• The following scale is ull0for rating wastewater treatment facllls: appropriate (circle a ro
PP points)
P )
ITEM POINTS
(1) Industrial Pretreatment Units or industrial Pretreatment Program (see definition No. 33) 4
(2) DESIGN FLOW OF PLANT IN gpd [not applicable to non -contaminated ooang waters, sludge handling facilities for
water purification plants, totally closed cycle systems(see definition No. 11), and facilities consisting only of hem
(4)(d) or Items (4)(d) and (11)(d))
0 - 20,000 1
20,001 - 50,000 2
50.001 - 100,000.... 3
100,001 - 250,000
250,001 - 500.000 .5
500.001 - 1,000,000 rg
1,000,001 - 2,000,000 10
2,000,001 (and up) rate 1 point additional for each 200.000 gpd capacity up to a maximum of 30
Design Flow (gpd)
(3) PRELIMINARY UNiTS/PROCESSES (see definition No.32)
(a) Bar Screens
or
(b) Mechanical Screens, Static Screens or Comminuting Devices
(c) Gil Removal 1
or
(d) Mechanical or Aerated Grit Removal 2
(a) Fbw Measuring Device 1
or
(f) Instrumented Flow Measurement 2
(g) Preaeration
2
(h) Influent Flow Equalization 2
(1) Grease or 011 Separators - Gravity 2
Mechanical .3
Dissolved Air Flotation .6
(J) Prechtorinatlon .5
(4) PRIMARY TREATMENT WRS/PROCESSES
(a) Septic Tank (see definition No. 43) 2
(b) Imhoff Tank. .5
(c) Primary Clarlflers .5
(d) Settling Ponds or Settling Tanks for Inorganic Non -toxic Materials (sludge handling facilities for water
purification plants. sand. gravel. stone. and other mining operations except recreational activities such as gem
or gold mining) 2
(5) SECONDARY TREATMENT WITS/PROCESSES
(a) Carbonaceous Stage
(I) Aeration -High Purity Oxygen System 20
Diffused Air System
Mechanical Air System (fixed. floating or rotor) ..... .....N........ _...N.
Separate Sludge Reaeralion
(iI) TricWing Filter
High Rate 7
Standard Rate .6
Packed Tower .5
(IiI) Biological Aerated Filter or Aerated Biological Flher.._.___._..._»».N..N.N...__...NN».N_._N.10
(Iv) Aerated Lagoons 10
(v) Rotating Biological Contactors 10
(vi) Sand Filters -Intermittent biological 2
Recirculating biological .3
(vf) Stabilization Lagoons
(vill) Clarifier ft
(ix) Single stage system for combined carbonaceous removal of BOO and nitrogenous removal by
nitrification (see definition No. 12)(Polnts for tNs hem have to be In addition to items
(5)(a)(i) through (5)(a)(v1li),
utilizing the extended aeration process (see definition No.3a) ,
utilizing other than the extended aeration process ...... ......N..... N........... »............ »....»....t8
(x) Nutrient additions to enhance BOD removal
(xl) Biological Culture ('Super Bugs•)addhion 5
(b) Nitrogenous Stage
(1) Aeration - High Purity Oxygen System.--------- .......... -------------..........-..2 0
Diffused Air System 10
Mechanical Air System (fixed, floating or rotor) ..... ....._...N.,._..._..._ ........ _........»........ _....8
Separate Sludge Reaeratlon 3
(II) Trickling Filter -High Rate 7
Standard Rate .5
Packed Tower .5
(111) Biological Aerated Filter or Aerated Biological Flher.__.__.___.__.»».»»N._.__._...__.»_._.10
(Iv) Rotating Biological Contactors 10
(v) Sand Fitter- Intermittent bbbgical....N..... N..N.N.N...... ...N......... N. .N ... 2
Recirculating biological , ... 3
(6) TERT1ARY OR ADVANCED TRFATMENTrWITS/PROCESSES 5
(a) Activated Carbon Beds -
without carbon regeneration......... ..._».....»...NNN ...._.... 5
with carbon regeneration.. ....»»..NN....N......_.....N........._._......».N.......».N.NNN....N».N....16
(b) Powdered or Granular Activated Carbon Feed -
without carbon regeneration..... N...............»....»..... NN.N........NN...N..N5
withcarbon regeneration...........N......... ...»........................».N.NN.... 15
(c) Air stripping N. N..N.»...... ............N....».N...». 5
(d) Denttrificatlon Process ...N.....— 10
(e) Electrodtalysis N.........».N.N.....O ...»......»..N.»...»...... N»..».«»......N.NN .......... NN....».....N.... ... 5
(f) Foam Separation............ N..N. N. 5
(g) ion Exchange i�
... .. N.NN.N.NN..NNN. ----./
(h) Land Application of Treated Effluent (sea definition No. 22b) (not applicable for sand, gravel. stone
and other similar mining operations) by high rate inflltration..N._.N.»NN_N._...»NN.._.N_N.»..._.........4
(i) Mlcroscreens....w.......N...N1._.NN.NNNN.NN.NNN.. N...... .S
(J) Phosphorous Removal by Biological Processes (See definition No. 26)....»»»...._.... 20
(k) Polishing Ponds - without aeration ... ...... .....N.. ,N ...N.N.N.»........... 2
with aeration----------------- ..... • •• •••••••• •• WO ....NN0-. N...N. .5

(a) Sludge Digestion Tank - Heated (anaerobic) 10
Aerobic 5
Unheated (anaerobic) 3
(b) Sludge Stabilization (chemical or thermal) .5
(c) Sludge Drying Beds - Gravity
Vacuum Assisted 44)
(d) Sludge Elutriatlon .5
(o) Sludge Conditioner (chemical or thermal) .5
(i) Sludge Thickener (gravity)
(9) Dissolved Air Flotation Uni.5
(not applicable to a unit rated as (3)(i)j 8
(h) Sludge Gas Utilization (including gas storage)
(I) Sludge Holding Tank - Aerated
Non -aerated 2
(J) Sludge Incinerator (not Including activated carbon regeneration) 10
(k) Vacuum Filter, Centrifuge. or Fitter Press or other similar dewatering devices......„»....»...» 10
(8) RESIDUALS_UTiLIZATiOWDISPOSAL (including incinerated ash)
(a) Lagoons 2
(b) Land Application (surface and subsurface) (see definition 22a)
by contracting to a land application operator or landfill operator who holds the land application permit
or landfill permit 2
( ) (c) Dedicated Landfill(burial) by the permittee of the wastewater treatment facility
9 DIShFECTICN
(a) Chlorination (b) Dechiorination 5
(c) Ozone O .5
d Radiation .5
.5
(10) CHEMICAL ADDITION SYSTEM(S) ( see definition No. 9) (not applicable to chemical additions rated as item (3)0).
Usta)(xi), (6)(a), (6)(b), (7)(b), (7)(e), (9a). (9)(b) or (9)(c) 5 points each:
5
5
5
(11) • MISCELLANEOUS UNiTS/PROCESSES 'S
(a) Holding Ponds, Holding Tanks or Settling Ponds for Organic or Toxic Materials Including wastes from mining
operations containing nitrogen or phosphorus compounds in amounts significantly greater than is common
for domestic wastewater A
(b) Effluent Flow Equalization (not applicable to storage basins which are inherent in land application systems)..-2
(c) Stage Discharge (not applicable to storage basins Inherent In land application
(d) Pumps
.3
(e) Stand -By Power Supply .3
(f) Thermal Pollution Control Device .3
TOTAL. POINTS....
CLASSIFICATION
Clan 1 5-25 Points
Class II 26-50 Points
Class III. 51-65 Points
Class IV 66-Up Points
Facilities having a rating of one through four points, Inclusive, do not require a certified operator.
Facilities having an activated sludge process will be assigned a minimum classification of Class II.
Facilities having treatment processes for the removal of metal or cyanide will be assigned a minimum classification of Class 11.
Facilities having treatment processes for the biological removal of phosphorus will be assigned a minimum classification of Class 111.
i�
.0004 DEFiNRIONS
The following definitions shall apply throughout this Subchapter.
(1) Activated Carbon Beds. A physlcaVchemlcal method for reducing soluble organic material from wastewater effluent; The column -type beds used in this
method will have a flow rate varying from two to eight gallons per minute per square foot and may be either upflow or downflow carbon beds. Carbon may or
may not be regenerated on the wastewater treatment plant she;
(2) Aerated Lagoons. A basin in which all solids are maintained In suspension and by which biological oxidation or organic matter is reduced through artificially
accelerated transfer of oxygen on a flow -through basis;
(3) Aeration. A process of bringing about Intimate contact between air or high purity oxygen In a liquid by spraying. agitation or diffuslon;(3a) Extended
Aeration. An activated sludge process utilizing a minimum hydraulic detention time of 18 hours.
(4) Agricuhurafly managed site. Any site on which a crop is produced, managed. and harvested (Crop includes grasses. grains. trees, etc.);
(5) Air Stripping. A process by which the ammonium ion is first converted to dissolved ammonia (pH adjustment) with the ammonia then released to the
atmosphere by physical means; or other similar processes which remove petroleum products such as benzene. toluene. and xyiene;
(6) Carbon Regeneration. The regeneration of exhausted carbon by the use of,a fumace to provide extremely high temperatures which volatilize and oxidize the
absorbed impurities;
(7) Carbonaceous Stage. A stage of wastewater treatment designed to achieve 'secondary" effluent limits;
(8) Centrifuge. A mechanical device In which centrifugal force is used to separate solids from liquids or to separate liquids of different dens1ias;
(9) Chemical Addition Systems- The addhion of chemical(s) to wastewater at an application point for purposes of Improving solids removal, pH adjustment.
alkalinity control, etc.; the capability to experiment with different chemicals and different application points to achieve a specific result will be considered one
system: lha canahillty to arm rhamica►lci in dual ,ini1R Will hr. r,$..rl •.. . _ . _ .

•
RATING SCALE FOR CLASSIFICATION OF WATER POLLUTION CONTROL SYSTEMS
Name of Facility: TowA of icey, awsv; l IP ( New e `c(t4)
Owner or Contact Person: ; cina rd j P W t
Mailing. Address: Post-- o i -r- C, t._ ,x 41O Keviain sue• i1e) NIL Z. H 39
County: ►� up Telephone: (1 i O) Z q L. - 0 3 6q
Present Classification: c,x?s-4-;v15) - New Facility V Existing Facility Ito
NPDES Per. No. NC00.1 ‘66 Nondisc. No.WQ Health Dept.Per No.___,_
Rated by: 54eve West Telephone: tOl 3cls- 310D Date: i t - Z3 -94
Reviewed by: Health Dept. Telephone:
ORC: r cj (2)Yov�v.
Regional Office
Central Office
Grade:
Check Classification(s): _ Subsurface
Wastewater Classification: (Circle One) I II
Sp - Irrigation
IV
Telephone: fs- 3 F°6
Telephone:
Telephone:
Land Application
Total Points: 9
3PLANT PROCESSES AND RELATED CONTROL EQUIPMENT WHiCH ARE AN INTEGRAL PART OF INDUSTRIAL PRODUCTION SHALL NOT BE
CONSIDERED WASTE TREATMENT FOR THE PURPOSE OF CLASSIFICATION. ALSO SEPTIC TANK SYSTEMS OONSISTING ONLY OF SEPTIC TANI(
AND GRAVITY NITRIFICATION LINES ARE EXEMPT FROM CLASSIFICATION
SUBSURFACE CLASSIFICATION
(check ail units that apply)
1 septic tanks
2. pump tanks
3siphon or pump -dosing systems
4 sand filters
5grease trap/interceptor
6. oil/water separators
7. gravity subsurface treatment and disposal:
8, pressure subsurface treatment and disposal:
SPRAY IRRIGATION CLASSIFICATION
(check all units that apply)
1. preliminary treatment (definition no. 32 )
2. lagoons
3. septic tanks
4pump tanks
5. pumps
6,sand filters
7_ grease trap/interceptor
8, oiUwater separators
9.disinfection
10.chemical addition for nutrient/algae control
11, spray irrigation of wastewater
In addition to the above classifications, .pretreatment of wastewater in excess of these components shall
be rated using the point rating system and will require an operator with an appropriate dual certification.
LAND APPLICATION/RESIDUALS CLASSIFICATION (Applies only to permit holder)
1. Land application of blosolids, residuals or contaminated soils on a designated site.
WASTEWATER TREATMENT FACILITY CLASSIFICATION
The following systems shall be assigned a Class i classification, unless the flow is of a significant quantity or the technology is unusually
complex, to require consideration by the Commission on a case -by -case basis: (Check if Appropriate)
1` Oil/water Separator Systems consisting only of physical separation, pumps and disposal;
2..__SepUc TanWSand Filter Systems consisting only of septic tanks, dosing apparatus, pumps,sand filters, disinfection
and direct discharge;
3,Lagoon Systems consisting only of preliminary treatment, lagoons, pumps, disinfection, necessary chemical treatment for
algae or nutrient control, and direct discharge; •
4, Closed -loop Recycle Systems;
5,Groundwater Remediatbn Systems consisting only of oilhwater separators, pumps, air -stripping, carbon adsorption, disinfection
and disposal;
8, Aquacutture operations with discharge to surface waters;
7. / Water Plant sludge handling and back -wash water treatment;
8, Seafood processing consisting of screening and disposal.
9,=Single-family discharging systems, with the exception of Aerobic Treatment Units, will be dassified if permitted afterJufy 1,
. 1993 or N upon Inspection by the Division, It is found that the system is not being adequately operated or maintained. Such
systems will be ratified of the classification or reclassification by the Commission, in vatting.

• The -following scale is used for rating wastewater treatment facilities: (circle appropriate points)
ITEM
POINTS
(1)
(2)
(3)
Industrial Pretreatment Units or Industrial Pretreatment Program (see definition No 33)
DESIGN FLOW OF PLANT IN gpd [not applicable to non -contaminated cooling waters, sludge handling facilities for
water purification plants. totally closed cycle systems(see definition No. 11), and facilities consisting only of item
(4)(d) or hems (4)(d) and (11)(d))
0 - 20,000 »......
1
20,001 - 50,000. .».»... 2
NN.MIND .3
50,001 - 100,000 N. ...
100,001 - 250.000.... N.
250,001 - 500,000 ,
500,001 - 1,000,000
1,000,001 • 2,000.000 10
2,000.001 (and up) rate 1 point additional for each 200,000 gpd capacity up to a maximum of ..».........»3 0
Design Flow (gpd)
PREUMINARY LR I TS/PROCESSES (see definition No.32)
(a) Bar Screens «.N.».»........
or
(b) Mechanical Screens. Static Screens or Comminuting Devices...».».».».»..».».. —.».»..:.-.»—.».».......»..,..».».
(c) Grit Removal......»....» 1
or
(d) Mechanical or Aerated Grt Removal ; . 2
(a) Fbw Measuring Device ...
or
(f) Instrumented Flow Measurement ..... «N...... ...
(g) Preaeratlon
(h) Influent Flow Equalization ...
(I) Grease or 011 Separators - Gravity»........»«»»...»...N....»...»....»...»...»...............»...»...»..............»....»...»..
Mechanical .... .3
Dissolved Air Flotation ...« .... .8
()) Prechlorinatlon. N...... ... 5
(4) PRIMARYTREATMENT (JI1TSIPFOCE.a'SSES
(a) Septic Tank (see definition No. 43).. ........»».. 2
(b) Imhoff Tank....«»»......... .5
(c) Primary Clarifiers .5
(d) Settling Ponds or Settling Tanks for Inorganic Nontoxic Materials (sludge handling facilities for water
purification plants, sand. gravel. stone. and other mining operations except recreational activities such as gem
(5)
. (5)
1
or gold mining) » ..» ..... ....... 2
SECONDARYTREATMENT WrIBIPROCESSES
(a) Carbonaceous Stage
(1) Aeration -High Purity Oxygen System---- .......»N»»«.N»»._......»..»...... 20
DiffusedAir System..................«....»....».»...•...«.N...»».N..»......N..»»»........«»...........1
Mechanical Air System (fixed, floating or rotor)N.»»...»».».............N...»..........»......»».». 9
SeparateSludge Reaeraiion.»».......»».».»...............»...... ...•...»».«.••
(11) Trldclhg Rter
High Rate..............----.................
..................»«. N».».»......7
Standard Rate................»».....».....»•..N••N•NN.NN•NwN..NN.-N•• .»N......-.»....N...».NS
Packed Tower w.«w.««.«.- ... 5
(tll) Bioiogice! Aerated Filter or Aerated Biological Fiber ..».»_N.»N.N•.».»» »».N...10
(Iv) Aerated Lagoons •........»«......NN..»NN«......»«.NN».«..N..N.«.NN».N............NN.N10
(v) Rotating Biological Contactors w...*MO .........«N.«.».wN....N......»....N.*ND N....»«.«.».10
(vi) Sand Filters -intermittent biotogicaL....» ..NN.....w..... ...».•-..2
Recirculating biological...............N.N......»..N.V..N».N...N....N.NN«...««...N««NN....M.N.....N..2
(vii) Stabilization Lagoons.............. .N..:«..«N.«..........N.»«.»•».»•»w.N.N.NN.•.N •
(vR1) CLarB ...N ..NN N. ....N
(ix) Singie stage system for combined carbonaceous removal of BOD and nitrogenous removal
nitrification (see definition No. 12)(Points for tNs Item have to be In addition to items
(5)(a)(I) through (5)(a)(vlt1).
utilizing the extended aeration process (see definition No.3a) NN. w »w». --
utilizing other than the extended aeration process. .•«
x) Nutrient additions to enhance BOD removal«.«......N....».».»N....N.
xl) Biological Culture ('Super Bugs')addition.....-...».«•www...««.N..N.»N.»-.....».».NwN.wN.S
(b) Nitrogenous Stage
(I) Aeration - High Purity Oxygen System. - .N»NN.......wN_NN»..»NN»NN»..20
D#tused�}Ir System.N•N.•NNw•NN.N....N..NN«.-NM.N..NN.».N....N.N.«......N.N...wN..N.NM.»N10
M�pechNanicallAir System (fixed, floating or rotor)......,...«N,...«»»N..»..w..»N.N..N.....8
Separate Skidge Reaen.Wn.wN.w. N... NNNW ....N.N.N N.NN.N.N.....««.3
Trickling Filter -High Rate.... ----...Standard Rate....»NN.«w...N.........NN.N...NN.................»...N.»..wN»».»........»..N..».»».»B
Packed Tower....»NN.»......•.•.....•............•......•...• N».S
Biological Aerated Filter or Aerated Biological FUterN .........NNNNN. ..10
Rotatingy Biological .Con aCtors..w.»»w«..»».ww« .».. .10
Sand Filter - Intermittent bbbgical.N......N «.»wN.ww» «.«.Nw»..«N2
Recirculating biological...............—.—.
(vl) ««•.««.«N«.NN.N.•NwwN..N«.N Nw•N-N.Nwww1-.NN.•«N.S
TERTIARY OR ADVANCED TREATMB�IT
(10)
(v)
(a) Activated Carbon Beds - -
without carbon regeneration ...................NN......--. ww»NNw».»...5
with carbon regeneration.N.».N.NN..,..N............NN..NN..N..•...««...«......« ' _ NNN»N15
(b) . Powdered or Granular Activated Carbon Feed
without carbon regeneration----------------- ...............».. - NN.....-- .S
1...
�•r_ with carbon regeneration«N....w« •« «•NN•N..wM•w••.N ««15
/c) atrlpPIng•••••N•••••-•Nl.N..•M.•Mw.N•N•NN.N«..«...•.....•...N......N.NN.M...•wM.•Nw»wwY.N.N.N.w.N.N«...N.www�/�
d) �tlon . .o�w.•.••.N... •«--.N•w•«•••N•ww•«N.»wN.•«.+. •w•N•N•••ww«w•N.N«1 0
e) Electrodlalysls.. •�:N»Nw•»-...-•N...•-NN«».»..••............MM.»»».»».»»..»»»wN»N»NN» •.....•••••••••.••••5
f) Foam•S�•`e._pantb,YN•»w••.•...•.••»N»»»w ...........•.-•..Nw..« ....N.......•»»NN«»»MM»wMMww ....•.••...»»»••..••••••••S
glon FXC••artge»•NN•N•N•NMMM•.•N«.N»•N••••N••N».»«•NN•Nw•NN•NN•«N••NN•NN••»«M«•«w-
h Land Application of Treated Effluent (sae definition No. 22b) (not applicable for sand. gravel. stone
and other similar mining operations) by high rate ktlttratlo
14
11)
Mk rescreens.w......•......N....-»....w.....N..N».w.w««N....«.»N...N.».»N».....»•..••..•.. »»w..5
Ph0shorous Removal by Biological Processes (See definition No. 26)wN.».»w«......... ».N-.2�
Polishing Ponds - without aeration.— _ _ -
with a+eratlon«N ..•» ... .5

diffused or mechanical
(m) Reverse Osmosis 2
(n) Sand or Mixed -Media Filters - low rate ..... ......»...»....»........ N..................... N.
high rate .5
(o) Treatment processes for removal of metal or cyanide ... 15
(p) treatment processes for removal of toxic materials other than metal or cyanide...»N.»...»N.»., „ 18
(7) SLUDGETREATMENT 'N»."»."».NN"
(a) SSttu�e Digestion Tank .- Heated (anaerobic) N, »........»....
Unheated (anaerobic) N. ' ' 5
(b) Sludge Stabilization (chemical or thermal)
(c) Sludge Drying Beds - Gravity Vacuum Assisted
(d) Sludge Elutriation
5
(e) Sludge Conditioner (chemical_or thermal) 5
(1) Sludge Thickener (gravity)..��tt� .5
(g) Dissolved Air Flotation Unit [not -applicable to a unit rated as (3)(1)} .8
(h) Sludge Gas Utilization (Including gas storage) N. 2
(I) Sludge Holding Tank - Aerated ».. .5
Non -aerated 2
(J) Sludge Incinerator (not Including activated carbon regeneration) 10
(k) Vacuum Filter. Centrifuge. or Filter Press or other similar dewatering devices.. ..»». ..N10
(8) RESIDUALS UTILIZATION/DISPOSAL (including incinerated ash)»»
.(a) Lagoons
2
(b) Land Application (surface and subsurface) (see definition 22a)
by contracting to a land application operator or landfill operator who holds the land application permit
or landfill permit
(c) Dedicated Landfill(burial) by the permitter) of the wastewater treatment facility........ ..... »..».....».»..»..... N.»...5
(9) Dtsl'fECTICN
(a) Chlorination
(b) Dechlortnation 'S
(c) Ozone
(d) Radiation 5
(10) CHEMICAL ADDITION SYSTEM(S) ( see definition No. 9) [not applicable to chemical additions rated as hem (3)(J).
Usta)(xt). (6)(a). (6)(b). (7)(b), (7)(e), (9a). (9)(b) or (9)(c) 5 points each:
(11) MISCELLANEOUS UNITS/PROCESSES
(a) Holding Ponds. Holding Tanks or Settling Ponds for Organic or Toxic Materials including wastes from mining
operations containing nitrogen or phosphorus compounds In amounts significantly greater than Is common
for domestic wastewater .4
(b) Effluent Flow Equalization (not applicable to storage basins which are Inherent In Land application systems)NN2
(c) Stage Discharge (not applicable to storage basins Inherent in land application systems)—.—.—.---.—.-
(d) Pumps
(e) Stand -By Power Supply N.N.NN....» N....N ......N ...».... N..
(I) Thermal Pollution Control Device
TOTAL POINTS
CLASSSFiC nctsr
Class 1 5-25 Points
Ci 1I N...N.»»...»».N..26-50 Points
Cis I 51-65 Points
.........NN..N...NNN.....NNN.NN..... N......NN..N.NN.N.N.N.N.NN......NN...N.N -Lip Points
5
5
5
5
Facilities having a rating of one through four points, Inclusive, do not require a certified operator.
Facilities having an activated sludge process wil be assigned a minimum dassitkatbn of Class IL
Facilities having treatment processes for the removal of metal or cyanide will be assigned a minimum classification of Class Il.
Facilities having treatment processes for the biological removal al phosphorus will be assigned a minimum classification of Class III.
Mann,
4004 DEFNrONS ' =
The following definitions shall apply throughout this Subchapter.
(1) Activated Carbon Beds. A physlcaVchemical method for reducing soluble organic material from wastewater effluent; The column -type beds used in this
method will have a flow rate varying from two to eight gallons per minute per square foot and may be either upfiow or downftow carbon beds. Carbon may or
may not be regenerated on the wastewater treatment plant site;
(2) Aerated Lagoons. A basin in which all solids are maintained in suspension and by which biological oxidation or organic matter Is reduced through artificially
accelerated transfer of oxygen on a flow -through basis;
(3) Aeration. A process of bringing about intimate contact between air or high purity oxygen In a liquid by spraying. agitation or dMuston (3a) Extended
Aeration. An activated sludge process utilizing a minimum hydraulic detention time of 18 hours.
(4) Agriculturally managed site. Any she on which a crcp is produced. managed. and harvested (Crop includes grasses, grains, trees, etc.); •
(5) Air Stripping. A process by which the ammonium ion Is first converted to dissolved ammonia (pH adjustment) with the ammonia then released to the
atmosphere by physical means; or other similar processes which remove petroleum products such as benzene. toluene, and xytene;
(6) Carbon Regeneration. The regeneration of exhausted carbon by the use of a furnace to provide extremely high temperatures which volatilize and oxidize the
absorbed knpurhies;
(7) Carbonaceous Stage. A stage of wastewater treatment designed to achieve 'secondary effluent limits;
8) Centrifuge. A mechanical device in which centrifugal force is used to separate solids from liquids or to separate liquids of different densities;
(9) Chemical Addition Systems- The addition of chemical(s) to wastewater at an application point for purposes of knproving solids removal, pH adjustment,
alkalinity control. etc.; the capability to experiment with different chemicals and different application points to achieve a specific result wilt be considered one
system; the capability to add chemical(s) to dual units will be rated as one system; capability to add a chemical at a different application points for different
purposes will result In the systems being rated as separate systems;
(10)'Chemical Sludge Conditioning. The addition of a chemical al compound such as lime. ionic chloride, or a polymer to wet sludge to coalesce the mass prior to
Ra apptkatbn to a dewatertng device;
(11) Closed Cycle Systeme. the of holding ponds or holding tanks for containment of wastewater containing inorganic. non -toxic materials from sand, gravel,
aushed stone or other similar cperations. Such systems shall carry a maximum of two points regardless of pumping facilities or any other appurtenances;
•(12) Combined Removal of Carbonaceous BOD and Nitrogenous Removal by Nitrification- A single stage system required to achieve pormtt effluent limits on BOD
and 8mmonla nitrogen within the same biological reactor;
(13) Qechlorfnatbn. The partial or complete reduction of residual chlorine in a liquid by any chemical or physical process;
(14) Denhrtficatbn Process. The conversion of nitrate -nitrogen to nitrogen pas;

N. C. DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
ENVIRONMENTAL MANAGEMENT COMMISSION
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
APPLICATION FOR PERMIT TO DISCHARGE - SHORT FORM A
To be filed only by municipal wastewater discharges
Do not attempt to complete this form before reading the accompanying instructions
Please print or type
1. Name of organization responsible for fadlity Town of Kenansville
2. Address, location, and telephone number of facility producing discharge:
A. Name Kenansville Municipal Wastewater Treatment Plant
B. Mailing address:
1. Streetaddress P. 0. Box 370
2. City KPnansvil 1 e 3. County Dupiin
4. State NC 5. ZIP 28349
C. Location:
1. Saeet address NCSR 1301
2. City KPnansvi 11 P 3. County Duplin
4. State NC
. D. Telephone No. 91 n-2qf —03ti9
01
Area
Code
If all your waste is discharged into a publicly os•ned waste treatment facility and to the best of your knowledge your are
not required to obtain a discharge permit, proceed to item 3. Otherwise proceed directly to item 4.
3. If you meet the condition sated above, check here 0 ana s•:ap1y the information asked for below. After completing
these items, please complete the date, title, and signature blocks below and return this form to the proper reviewing W
office without completing the remainder of the form.
A. Name of organization responsible for receiving waste
B. Facility receiving waste:
1. Street address
2. City 3. County
4. State 5. ZIP
4. Type of treamnent:
A. None B. Primary C. []Intermediate ' D. ESecondary
E. Advanced
5. Design flow (average daily) of facility .170 iig
6. Percent BOD removal (actual):
A. 00-29.9 B. 030-64.9 C 065-84.9 D. [385-94.9
E. ®95 or more
7. Population served:
A. 01-199 B. 0200-499 C ®500-999 D. 01,000-4,999
E. ED5,000-9,999 F. 010,000 or more
8. Number of separate discharge points:
A. ®1 B. []2 C. D3 D. 04 E. 05 F. 06
.170 Existing
.300 Proposed

9. Description of waste water discharged to surface waters only (check as applicable).
Discharge per
operating day
Flow, MGD (million gallons per operating day)
Volume treated before
dischargingjpercent)
A. Average
.170
100%
B. Maximum
.792
100%
10. If any waste water, treated or untreated, is discharged to places other than surface waters, check below as
applicable. NA
Waste water is
discharged to .
Flow, MGD (million gallons tamer operatine dav)
0-0.0099
(1)
0.01-0.049
(2)
0.05-0.099
(3)
- 0.1-0.49
(4)
0.5-0.90
(5)
1.0-4.9
(6)
5 or more
. (7)
A. Deep well
—B.
Evaporation lagoon
C Subsurface percolation
syscem
.
••
.
D. dther, specify:
.
11. Is any sludDa ultimately returned to a waterway?
A. ] Yes B. ®No
12. a. Do you reclive industrial waste?
1. Yes 2. ©No
b. If yes, enter approximate number of industrial dischargers into system N/A
.13. Type of collection sewer system:
A. ® Separate sanitary •
• B.. Combined sanitary and storm
C DBoth separate and combined sewer systems
14. Name of receiving water or waters Grove Swamp
•
15. Does your discharge contain or is it possible for your discharge to contain one or more of the following
substances: ammonia, cyanide, aluminum, beryllium, cadmium, chromium, copper, lead, mercury,
nickel, selenium, zinc, phenols.
A. Yes B. [3No
I certify that I am familiar with the information contained in the application and that to the best of my knowledge and belief
such information is true, complete, and accurate.
Conrad H. Jenkins:
Printed name of Person Signing -
Title
Mayor
January 16, 1996
Date Application Signed
l /ice.
Signature of Applicant
North Carolina General Statute 143-215.6 (b)(2) provides that: Anv person who knowingly makes any false statement
representation, or certification in any application, record, report, plan, or other document files or required to be maintained
under Article 21 or regulations of the Environmental Management Commission implementing that Article, or who falsifies,
tampers with, or knowly renders inaccurate any recording or monitoring device or method required to be operated or
maintained under Article 21 or regulations of the Environmental Management Commission implementing that Article, shall
be guilty of a misdemeanor punistiable by a fine not to exceed 510,000, or by imprisonment not to exceed six months, or by
both. (18 U.S.C. Section 1001 provides a punishment by a fine of not more than 510,000 or imprisonment not more than 5
years, or both, for a similar offense.)

Sludge Handling Process
Sludge that is not returned to the oxidation
ditch is wasted through the aerobic digesters to the
sludge drying beds or aerated sludge holding basin (old
WWTP oxidation ditch) . The aerobic digesters provide
long term holding and digestion of the solids removed
from the treatment process. Two (2) aerobic digesters
are provided at the old WilTP site. Digester No. 1 is
located at the souheastern corner of the old WWTP site
and is 32 ft. in diameter with a maximum depth of 13.5
ft. Digester No. 2 is located at the old WWTP site
between the sludge/supernatant pumps and the lab
building. Digester No. 2 is 23.5 ft. in diameter and has
a maximum depth of approximately 10 ft.
Aeration in the digesters is normally accomplished
continuously to maintain aerobic conditions and complete
mixing. Periodically, aeration is stopped and the solids
allowed to settle. The supernatant on top is withdrawn
by lowering a swinging elbow and pipe. Supernatant is
piped to the sludge wasting/ supernatant return pump
station wet well and then pumped to the oxidation ditch
for further treatment since it is high in DOD and
suspended solids. Valves must be operated to
accomplish supernatant return to the oxidation ditch
since the pump station serving the sludge handling
facilities serves several different functions.
As more secondary sludge is added and the di-
gestion process continues, the solids level in the
digester tank will increase and sludge must be wasted.
Aeration is stopped and the solids allowed to settle to
provide a highly concentrated sludge. At Digester No.
1 the sludge is drawn off the bottom through the
telescoping valve on the northwestern side of the
digester. At Digester No. 2 the concentrated sludge is
drawn off the hopper bottom through a 6 inch pipe into
the sludge wasting/supernatant return pump station wet
=:well: - The Wafer `level in the'-: digester `:tank- pr(ivi'des :tl a
head necessary to draw off the sludge. In : order to
waste sludge to the sludge drying beds, the valve on
the sludge waste line must be opened and the valve on
the force main to the aerated sludge holding structure
(formerly oxidation ditch)mustbe closed. In order to
wastesludge to the aerated sludge holding structure the
process is reversed (valve to dr.Ting beds is closed and
valve to aerated sludge holding is opened.) Sludge may
be transferred from Digester No. 1 to Digester No. 2 by
routing sludge removed from Digester No. 1 through the
sludge wasting/supernatant return pump station: to
Digester No. 2. The normally closed valve on the force
main at Digester No. 2 must be opened while the valve

i
on the force main to the aerated sludge holding
structure must be closed. After transferring the
desired quantity of sludge from Digester 1 to Digester 2
the valve at Digester No. 2 should be closed.
Aerobic digestion is a biological process involving
direct oxidation of organic matter and endogenous oxida-
tion of microorganism cell tissue. Microorganisms will
oxidize organic matter in the sludge to form cell tissue
and to reproduce new cells. As the number of microor-
ganisms increases, the supply of available organics
(food) will decrease. The microorganisms will then begin
to consume their own cell protoplasm to obtain energy
for cell maintenance in a process called endogenous
respiration. As the process continues, cell tissue is
oxidized to carbon dioxide, water, and ammonia. Ap-
proximately 75 to 80 percent of the cell tissue can be
oxidized this way. The remainder is composed of inert
compounds and non -biodegradable organics.
Aerobic conditions must be consistently maintained
in the digester for the process to proceed properly.
Failure to maintain aerobic conditions will cause poor
digestion of the sludge resulting in an odorous sludge
with poor drying characteristics.
Sludge Drying Beds
One of the primary end products of wastewater
treatment is sludge, or the biological solids produced
during the treatment process. These solids must be
periodically removed from the treatment plant such that
the concentration of solids within the plant is maintained
within desirable levels. If solids are not periodically
removed, effluent concentrations Hof solids will increase
due to the plant's inability to retain solids in an
overloaded state. An increase in effluent solids
concentrations ; will also " cause an increase in BOD
u :_.......
concentrations and could easily__t lead o violations of
permit limits and water-- quality_ standards.:'`"
The removal_ of solidsfrom the Kenansville treatment
plant - may be accomplished via drying beds orby
trucking: `liquid ` sludge from the aerated sludge holding
structure. A total of ten drying beds are available.
Six beds are rectangular with 4.0 `. ft. concrete walls.
Each is 15 ft. in length and 15 ft. in width for a total
area of 1350 ft2 for the six beds. The other four beds
are also rectangular with 3.5 ft concrete walls. Each of
these beds measures 50 ft. by 25 ft. for a total area of
5000 ft2. The plant has a total drying bed area of 6350
ft2. Since the drying beds represent a very
inexpensive method for sludge removal it is .of paramount

importance that the beds be loaded at all times. Under
summer conditions sludge beds may be "turned over" on
several occasions while in winter or during wet
conditions a single bed may require several months for
drying. It is of the greatest importance that sludge
wasting be maximized during summer conditions when
drying may be accomplished at its greatest rate. MLSS
concentrations in the aerobic digester and oxidation ditch
should be reduced to the minimum concentrations possible
consistent with good treatment. By reducing solids to a
minimum during the summer and fall the plant may
accumulate solids in the oxidation ditch and concentrate
solids in the aerobic digesters and aerated sludge
holding structure during winter without suffering a
significant deterioration in effluent quality. If summer
and fall drying seasons are not utilized to reduce solid
concentrations, it is likely that drying beds will be at
capacity while solids levels within the plant increase
above acceptable levels with a corresponding decrease in
effluent quality. As the winter season begins, the plant
operator should increase the digester and sludge holding
structures solids loadings to their maximum prior to
beginning to increase the solids loading in the oxidation
ditch. Drying beds should be filled with sludge
immediately following theremoval of dried sludge at all
times during the year provided that minimum solids
levels .consistent with good treatment are provided in the
oxidation ditch.
The use of drying beds for sludge dewatering is a
relatively simple process. Digested sludge is placed on
a bed and allowed to dewater and dry under natural
conditions. After the sludge has dewatered sufficiently,
it is removed from the bed and trucked to an approved
site for disposal. Dewatered sludge is characterize as
a damp solid with a minimum solids content of 15
percent, although this is not a hard and fast rule. The
drying -bed process is a fill and draw operation..
Deg►rat_ eririg" sludge on-- drying beds ' -involves::the
processes- :of drainage and __ evaporation. Immediately.
after the sludge is placed on a bed, water will begin to
drain into the sand media and down into the und erdrain
collection system. The underdrain collection system
recycles the water from the ._sludge to . the oxidation ditch
for treatment. Drainage will continue .:.at decreasing
rates until the pores of ..the -media surface ' ' are clogged
and drainage ceases. The drainage process usually
takes 3 to 5 days to complete. Drying then proceeds by
evaporation. As the sludge continues to dry by
evaporation, it will eventually crack exposing more area
which aids in drying. The evaporation process will

require several weeks to complete. After sufficient
drying, the sludge is considered dewatered and may be
removed for disposal.
Aerated Sludge Holding Structure
The oxidation ditch structure at the old WWTP may now
be used as an aerated sludge holding structure. The
structure has an approximate volume of 190 , 000 gallons and
can store approximately 100 days of sludge based on a waste
rate of 323 lbs/day (.3 MGD WWTP average flow) at 2% solids
concentration. During winter conditions when drying beds
are unavailable or at other times as desired by the operator,
sludge may be wasted from Digesters 1 and 2 to the aerated
sludge holding structure for storage. Sludge may be
"wasted" to the storage structure via the sludge
wasting/ supernatant return pump station by opening the
sludge draw off lines at Digesters 1 and/or 2 and by opening
the valve on the force main to the aerated sludge structure.
Once the desired quantity has been removed from the
digesters the drawoff lines must be closed. The valve on the
force main to the aerated sludge structure may remain open
until such time it is necessary to close the valve to
accomplish other activities such as supernatant removal or
wasting to the drying beds.
The holding structure must periodically be visited by a
liquid sludge hauler to have a portion of its sludge removed
for land disposal. The rotor used for aerating the sludge
must be immersed in order to accomplish aeration. It will
therefore be necessary to re -fill the structure on each
occasion sludge is removed at least to the bottom of the
rotor. THE WATER LEVEL AND THE AERATED SLUDGE
HOLDING STRUCTURE SHOULD NEVER BE LOWERED BELOW
THE NATURALLY OCCURING t1HGH WATER TABLE IN THE
IMMEDIATE VICINITY OF THE STRUCTURE. Sludge may be
removed- from: the structure itself or at the wet well at the
pump station by opening the drain valve adjacent to the
structure. Since_ re -filling the structure during the sludge
removal-= -proceW -ray. be iieces"sary,:: careshotild .: be tak en . to
insure-: that only the thickened sludge from ..the bottom of the
structure is removed
Water level in the . aerated sludge holding structure is
controlled _ via:, the hinged weir at _ the eastern end of the
structure_. When it is desired to remove supernatant, the
rotor must • be turned off and the sludge allowed time to
settle. Once the sludge has settled the hinged weir may be
gradually lowered to remove the desired quantity of
supernatant. The depth of immersion of the rotor is
controlled by the hinged weir. The deeper the rotor is
immersed the greater the transfer of oxygen and consumption
of horsepower. The depth of immersion should be minimized
to the lowest possible level that maintains aerobic conditions

in the structure. The supernatant removedfrom the
structure flows to the sludge wasting/supernatant return
pump station where it must be pumped to the new oxidation
ditch for treatment. Accordingly, the valve on the
supernatant force main must be opened and the valve on the
waste line to the aerated sludge holding structure must be
closed.
The plant operator should be aware of the costs
associated with the various types of sludge removal and
operate the plant's sludge handling facilities in the manner
most economical to the Town.

7e74
Water
Tank
'e73 .
21
35.
57'30" —
3' 7 2 �y '
•
Ems_` . ' I�•..� .
•
/ L/ •...:
�- Town of Kenansville
NPDES No. NC0036668
��.Discharge Point
Latitude: 34° 58'
Longitude: 77° 57'
•
• United•
Ch;
Dunn !j _T_
—Bhp
39.5
///
7'