NC0021865_Permit (Issuance)_20100114

NPDES DOCUHENT SCANNING COVER SHEET
NPDES Permit:
NC0021865
Chadbourn WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
January 14, 2010
This document is printed on reuse paper - ignore any
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NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
January 14, 2010
Steve L. Cox
Town Manager
Town of Chadbourn
602 North Brown Street
Chadbourn, NC 28431
Subject: Issuance of Renewal NPDES Permit
NPDES Permit NC0021865
Town of Chadbourn WWTP
Columbus County
Class III
Dear Mr. Cox:
Division personnel have reviewed and approved your application for renewal of the subject permit.
Accordingly, we are forwarding the attached NPDES discharge 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 U.S. Environmental Protection Agency dated October 15, 2007 (or as
subsequently amended).
Summary of Changes in Renewal Permit from Existing Permit
1) Effluent conductivity monitoring has been removed. Based on best professional judgment
conductivity monitoring is not needed.
2) Total Nickel WQS based limits have been removed and monitoring frequency reduced to monthly.
The reasonable potential analysis indicates no compliance concerns.
3) Total' Copper monitoring frequency has been reduced to'quarter/y. Total Copper is an action level
toxicant. Because the facility is consistently passing its chronic toxicity tests, quarterly sampling to
coincide with toxicity test sampling is acceptable.
4) Total Zinc monitoring frequency has been reduced to quarterly. Total Zinc is an action level
toxicant. Because the facility is consistently passing its chronic toxicity tests, quarterly sampling to
coincide with toxicity test sampling is acceptable.
5) A dich/oroboromethane 2/month monitoring, monthly average limit, and daily maximum limit have
been added. The reasonable potential analysis indicates a compliance concern.
6) A nitrite/nitrate nitrogen reporting has been added. To calculate Total Nitrogen a nitrite/nitrate
nitrogen measurement is required. This parameter was added to be consistent with Division
requirements.
7) A total kje/dah/ nitrogen reporting has been added. To calculate the Total Nitrogen a total Kjeldahl
nitrogen measurement is required. This parameter was added to be consistent with Division
requirements. •
Page 1 of 2
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] \ FAX: [phone] \ Customer Service: 1-877.623-6748
Internet http:/ / h2o.state.nc.us /
An Equal Opportunity 1 Affirmative Action Employer •
None hCarolina
�atura!!y

8) A footnote for TRC has been added. A narrative to clarify application and measurement/reporting
protocols was added to be consistent with Division requirements.
9) Special Condition A (2.) CHRONIC TOXICITY PERMIT LIMIT (QRTRLY) has been edited. The narrative
was updated to match current requirements and descriptions. _
10) Special Condition A (5.) NOTIFICATION OF WASTEWATER DIVERSION TO HOLDING PONDS has been
added. A narrative condition to keep the Wilmington Regional Office informed of the diversion of
wastewater to the holding ponds was developed and added.
11)Ammonia as nitrogen limits were corrected in Special Condition A (1.). A technical correction was
made in this final permit, the ammonia as nitrogen limits will not change from the current permit.
Note: Items 10) and 11) were changed from the draft permit.
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 150E of the North Carolina General Statutes, and 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.
Please note that this permit is not transferable except after notice to the Division. The Division
may require modification or revocation and reissuance of the permit. This permit does not affect the legal
requirements to obtain other permits which may be required by the Division of Water Quality or permits
required by the Division of Land Resources, the Coastal Area Management Act or any other federal or local
governmental permits that may be required.
If you have any questions concerning this permit, please contact Ron Berry at telephone number
[phone].
Sincerely,
_cbc.- Coleen H. Sullins
Attachments
Cc: Wilmington Regional Office/Surface Water Protection Section (email with revised fact sheet)
EPA Region IV/Marshall Hyatt (email with revised fact sheet)
Environmental Sciences Section/Aquatic Toxicology Unit/Susan Meadows (email)
Central Files
NPDES Unit
Page 2 of 2

Permit No. NC0021865
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions 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 Chadbourn
is hereby authorized to discharge wastewater from a facility located at
Chadbourn WWTP
NC Highway 130
Chadbourn, North Carolina
Columbus County
to receiving waters designated as Soules Swamp in the Lumber 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 February 1, 2010.
This permit and the authorization to discharge shall expire at midnight on August 31, 2014.
Signed this day January 14, 2010.
41-- ;. Coleen H. Sullins, Directo
Division of Water Quality
By Authority of the Environmental Management Commission

Permit No. NC0021865
SUPPLEMENt TO PERMIT
All previous NPDL'S Permits issued to this facility, whether for operation or discharge are hereby
revoked. As of this permit issuance, any previously issued permit bearing this number is no longer
effective. Therefore, the exclusive authority to operate and discharge from this facility arises under
the permit conditions, requirements, terms, and provisions included herein.
Town of Chadbourn
is hereby authorized to:
1. Continue to operate a 1.0 MGD activated sludge wastewater treatment facility located at the
Town of Chadbourn WWTP, 5275 Chadbourn Highway, Chadbourn, NC, Columbus County, and
consisting of the following treatment components:
o Manual bar screen
o Influent composite sampler
o Influent pump station
o Grit removal
o Two (2) 0.5 treatment capacity aeration basins, A & B
o One (1) influent Parshall flume with continuous flow meter to treatment basin A
o Two (2) clarifiers
o One (1) tertiary sand filter with backwash system
o One (1) effluent flow meter after filter
o Two (2) 0.5 MG polishing ponds
o Two (2) chlorination systems with chlorine contact basins
o Two (2) post aeration basins
o Two (2) dechlorination systems
o Effluent composite sampler
o WAS pump station
o One (1) WAS recycle flow meter
o Two (2) aerated sludge digesters, one 40,000 gallons, one 90,000 gallons
o Standby generator
2. Discharge from said treatment works via Outfall 001 into Soules Swamp, a Class C, Swamp water
in the Lumber River Basin, at the location specified on the attached map.

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USGS Quad: J23NE Chadbourn, NC
Outfall Facility
Latitude: 34° 19' 23.1" N 34° 19' 23.5" N
Longitude: 78° 47' 45.5" W 78° 47' 41.1" W
Stream Class: C, Sw
Subbasin: 03-07-58 HUC: 03040206
Receiving Stream: Soules Swamp.
Facility
Location
Town of Chadbourn WWTP NC0021685
Columbus County

Permit No. NC0021865
A(1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Beginning on the effective date of this permit and lasting until expiration, the Permittee is authorized
to discharge treated wastewaterfrom Outfall 001. Such discharges shall be limited and monitored by
the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
-
Weekly
Average
Daily
Max
Measurement
Frequency
Sample
Type
Sample
Location 1
Flow
1.0 MGD
� Continuous
Recording
I or E
BOD, 5-day, 20°C 2
(April 1-October 31)
5.0 mg/I
7.5 mg/I
3/Week
Composite
E,
BOD, 5-day, 20°C 2
(November 1-March 31)
6.0 mg/I
9.0 mg/I
3/Week
Composite
E,
Total Suspended Solids (TSS) 2
30.0 mg/I
45.0 mg/I
3/Week
Composite
E, I
Ammonia as Nitrogen (NH3-N)
(April 1-October 31)
2.0 mg/I
6.0 mg/I
3/Week
Composite
E
Ammonia as Nitrogen (NH3-N)
(November 1-March 31)
4.0 mg/I
12.0 mg/I
3/Week
Composite
E
Total Residual Chlorine (TRC) 3
19 ug/I
3/Week
Grab
E
Fecal coliform
(geometric mean)
200/100
ml
400/100
ml
3/Week
Grab
E
Dissolved Oxygen (D0)
Not less than 6.0 mg/I, daily
average
3/Week
Grab
E
Dissolved Oxygen, mg/I (DO)
(June 1- September 30)
3/Week
Grab
U, D
Dissolved Oxygen, mg/I (DO)
(October 1- May 31)
Weekly
Grab
U, D
Temperature ° C
Daily
Grab
E
Temperature, °C
(June 1- September 30)
3/Week
Grab
U, D
Temperature, °C
(October 1- May 31)
Weekly
Grab
U, D
pH
Not less than 6.0 S.U. nor more
than 9.9 S.U.
3/Week
Grab
E
Dichlorobromomethane
83 pg1I
83 µg/I
2/Month
Grab
E
•
Total Nickel, µg/I
Monthly
Composite
E
Total Mercury (Method 1631E)
Quarterly
Grab
E
Total Nitrogen, mg/I (TN)
TN = (NO2-N+NO3-N) + TKN
Quarterly
Calculated
E
Nitrite/Nitrate Nitrogen, mg/I
(NO2-N+NO3-N)
Quarterly
Composite
E
Total Kjeldahl Nitrogen, mg/I
(TKN)
Quarterly
Composite
E
Total Phosphorus , mg/I (TP)
Quarterly
Composite
E
Total Copper, µg/I
•
L
Quarterly
Composite
E
Total Zinc, µg/I
Quarterly
Composite
E
Chronic Toxicity 4
Quarterly
Composite
E
Pollutant Analysis 5
. Annually
Composite
E
(FOOTNOTES on next page)

Permit No. NC0021865
(Continued A 1. EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS)*
Footnotes:
1. Sample locations: E- Effluent, I- Influent, U- Upstream at least 100-feet (SR1005), D- Downstream at
least 300-feet below discharge and above Benson Mill Pond.
2. The monthly average effluent BOD5 and TSS concentrations shall not exceed 15% of the respective
influent value (85% removal).
3. Total Residual Chlorine compliance is required for chlorine or chlorine derivative used for disinfection.
The Division shall consider all effluent TRC values reported below 50 ug/l to be in compliance with the
permit. However, the Permittee shall continue to record and submit all values reported by a North
` Carolina certified laboratory (including field certified), even if these values fall below 50 ug/I.
4. Chronic Toxicity (Ceriodaphnia) at 90%; March, June, Sept., and December; refer to Special Condition
A(2).
5. See Special Condition A(3) of this permit.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Permit No. NC0021865
A (2). CHRONIC TOXICITY PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality'
to Ceriodaphnia dubia at an effluent concentration of 90%.
The permit holder shall perform at a minimum, Quarter/v monitoring using test procedures outlined in the
"North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or subsequent
versions or "North Carolina Phase II • Chronic Whole Effluent Toxicity Test Procedure" (Revised -February
1998) or subsequent versions. The tests will be performed during the months of March, June, September,
and December. Effluent sampling for this testing shall be performed at the NPDES permitted final effluent
discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below the
permit limit, then multiple -concentration testing shall be performed at a minimum, in each of the two
following months as described in "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised -February 1998) or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric mean of the
highest concentration having no detectable impairment of reproduction or survival and the lowest
concentration that does have a detectable impairment of reproduction or survival. The definition of
"detectable impairment," collection methods, exposure regimes, and further statistical methods are
specified in the "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -February
1998) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the months in which tests were performed, using the parameter code TGP3B
for the pass/fail results and THP3B for the Chronic Value. Additionally, DWQ Form AT-3 (original) is to be
sent to the following address:
Attention: Environmental Sciences Section
North Carolina Division of Water Quality
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section no later than
30 days after the end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved designate
signature. Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine
is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required, the permittee will complete the information located at the top of the aquatic toxicity (AT) test
form indicating the facility name, permit number, pipe number, county, and the month/year of the report
with the notation of "No Flow" in the comment area of the form. The report shall be submitted to the
Environmental Sciences Section at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring
will be required during the following month. Should any test data from this monitoring requirement or
tests performed by the North Carolina Division of Water Quality indicate potential impacts to the receiving
stream, this permit may be re -opened and modified to include alternate monitoring requirements or limits.
If the Permittee monitors any pollutant more frequently then required by this permit, the results of such
monitoring shall be included in the calculation and reporting of the data submitted on the DMR and all AT
Forms submitted.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival, minimum control organism reproduction, and appropriate environmental controls, shall
constitute an invalid test and will require immediate follow-up testing to be completed no later than the
last day of the month following the month of the initial monitoring.

Permit No. NC0021865
A. (3) EFFLUENT POLLUTANT SCAN
The permittee shall perform Effluent Pollutant Scans for all parameters listed in the attached table (in
accordance with 40 CFR Part 136). Samples shall be collected in different calendar years, approximately
annually, except to provide seasonal variation. Unless otherwise indicated, metals shalt be analyzed as
"total recoverable."
Ammonia (as N)
Trans-1,2-dichloroethylene
Bis (2-chloroethyl) ether
Chlorine, total residual (TRC)
1,1-dichloroethylene
Bis (2-chloroisopropyl) ether
Dissolved oxygen
1,2-dichloropropane
Bis (2-ethylhexyl) phthalate
Nitrate/Nitrite
1,3-dichloropropylene
4-bromophenyl phenyl ether
Kjeldahl nitrogen
Ethylbenzene
Butyl benzyl phthalate
Oil and grease
Methyl bromide
2-chloronaphthalene
Phosphorus
Methyl chloride
4-chlorophenyl phenyl ether
Total dissolved solids
Methylene chloride
Chrysene
Hardness
1,1,2,2-tetrachloroethane
Di-n-butyl phthalate
Antimony
Tetrachloroethylene
Di-n-octyl phthalate
Arsenic
Toluene
Dibenzo(a,h)anthracene
Beryllium
1,1,1-trichloroethane
1,2-dichlorobenzene
Cadmium
1,1,2-trichloroethane
1,3-dichlorobenzene
Chromium
Trichloroethylene
1,4-dichlorobenzene
Copper
Vinyl chloride
3,3-dichlorobenzidine
Lead
Acid -extractable Compounds
Diethyl phthalate
Mercury (Method 1631E)
P-chloro-m-creso
Dimethyl phthalate
Nickel
2-chlorophenol
2,4-dinitrotoluene
Selenium
2,4-dichlorophenol
2,6-dinitrotoluene
Silver
2,4-dimethylphenol
1,2-diphenylhydrazine
Thallium
4,6-dinitro-o-cresol
Fluoranthene
Zinc
2,4-dinitrophenol
Fluorene
Cyanide
2-nitrophenol
Hexachlorobenzene
Total phenolic compounds
4-nitrophenol
Hexachlorobutadiene
Volatile Organic Compounds
Pentachlorophenol
Hexachlorocyclo-pentadiene
Acrolein
Phenol
Hexachloroethane
Acrylonitrile
2,4,6-trichlorophenol
Indeno(1,2,3-cd)pyrene
Benzene
Base -neutral Compounds
lsophorone
Bromoform
Acenaphthene
Naphthalene
Carbon tetrachloride
Acenaphthylene
Nitrobenzene
Chlorobenzene
Anthracene
N-nitrosodi-n-propylamine
Chlorodibromomethane
Benzidine
N-nitrosodimethylamine
Chloroethane
Benzo(a)anthracene
N-nitrosodiphenylamine
2-chloroethylvinyl ether
Benzo(a)pyrene
Phenanthrene
Chloroform
3,4 benzofluoranthene
Pyrene
Dichlorobromomethane
Benzo(ghi )perylene
1,2,4-trichlorobenzene
1,1-dichloroethane
Benzo(k)fluoranthene
1,2-dichloroethane
Bis (2-chloroethoxy) methane
The Permittee shall report test results within 90 days of sample collection to the Division in DWQ Form- DMR-
PPA1 or other form approved by the Director (see NPDES Unit web site). The report shall be submitted to the
following address:
Division of Water Quality
Water Quality Section / Central Files
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Submittal of Priority Pollutant Analysis results with NPDES renewal applications will be required.

Permit No. NC0021865
A (4.) MERCURY REOPEN ER
The Division may re -open this permit to require mercury Toad limitations, mercury minimization
plans, and/or source water characterization following completion of the Phase 2 Mercury TMDLs for
the Lumber and Waccamaw River watersheds.
A (5.) NOTIFICATION OF WASTEWATER DIVERSION TO HOLDING PONDS
To facilitate efficient tertiary filters operations, high flow surges of wastewater are occasionally
diverted to the holding ponds and thus relieve potential overflow at the tertiary filter. Eventually the
wastewater is returned to the treatment process. The permittee must alert the Wilmington Regional
Office, Surface Protection Group by phone within 48 hours of each diversion event at [phone].
The permittee caller may be connected to the Wilmington Regional Office voice mail system. At a
minimum the permittee shall report the following:
a) State: " I am alerting the Surface Water Protection Group about a holding pond diversion
event at Chadbourn WWTP"
b) State the person's name making this call
c) State the date, time, and duration of the diversion event
d) State, if known, the anticipated date, time, and duration to return the collected wastewater in
the pond(s) back to the treatment process.
'The Wilmington Regional Office may request additiorial information or conduct further follow up.

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NC0021865
Revised: 1/13/10
Facility Information
Applicant/Facility
Name:
Town of Chadbourn WWTP
Applicant Address:
602 North Brown Street; Chadbourn, North Carolina 28431
Facility Address:
5275 Chadbourn Highway; Chadbourn, North Carolina 28431
Permitted Flow
1.0 MGD
Type of Waste:
domestic
Facility/Permit Status:
Class III /Active; Renewal
County:
Columbus County
Miscellaneous
Receiving Stream:
Soules Swamp
Stream Classification:
C, Sw
Subbasin:
03-07-58
Index No.
15-4-8
Drainage Area (mi2):
5.6
303(d) Listed?
No
Summer 7Q10 (cfs)
0.15
Regional Office:
Wilmington
J23NE
Chadbourn, NC
Winter 7Q10 (cfs):
0.2
State Grid / USGS
Quad:
30Q2 (cfs)
0.2
Permit Writer:
Ron Berry
Average Flow (cfs):
6.0
Date:
11/2/09
IWC (%):
91.2%
Revised: RDB
1/13/10
BACKGROUND
The Town of Chadbourn operates a 1.0 MGD domestic wastewater treatment facility that
serves the Chadbourn community with a population of approximately 2,129. The Chadbourn
Plant discharges treated 100% domestic wastewater to Soules Swamp, a class C, Sw water in
the Lumber River Basin. This section of the Lumber River is not impaired.
PROCESS
Untreated domestic waste is introduced to the plant headworks via a forced sewer main that
flows thru a bar screen before entering a collection sump. An influent composite sampler
collects samples. Influent pumps transfer wastewater from the sump, thru the grit removal
system, and feed a flow diverter box. The diveter box is used to establish gravity flow to the
two 0.5 MGD treatment oxidation basins. One basin has an influent flow meter. Aerators
provide air for the oxidation process in each basin. The wastewater flow from the oxidation
basins collects in a second flow diverter box where the outlet flow to the two gravity
clarifiers is established.
The clarified liquid streams are collected in a sump. Pumps provide positive flow to either the
tertiary sand filter or the two 0.5 MG holding ponds. To enhance the filtration step chlorine is
added before the filter. The filtered wastewater continues thru the effluent flow meter,
chlorine contact chamber, post aeration chamber, and is dechlorinated before entering the
effluent sewer system. A separate system provides backwash water to the filter and
recycles the backwash water.
When wastewater is discharged from the two ponds it passes through a chlorination and
post aeration process before entering the effluent sewer system. Dechlorination is conducted
on the pond wastewater in the effluent sewer, before the filtered treated wastewater enters
into the effluent sewer.
After the treated wastewater streams have mixed an effluent composite sample is taken.
The effluent pipe continues and discharges submerged into the main channel of Soules
Swamp.
Sludge is routinely wasted from the clarifiers and collects in a sump. Pumps are used to
transfer the sludge either to the two sludge digesters or to recycle sludge to the influent. As
needed sludge is pumped from the digester by a contractor and is land applied.
Fact Sheet
NPDES NCO021 S3 I
Page I 45

HISTORY
During this permit cycle there have been two limit violations, one violation for the BOD
weekly average and one for Fecal Coliform monthly average. There have been no process
or equipment changes. A TMDL for mercury was completed in 2000.
PERMITTING STRATEGY
Reasonable Potential Analysis (RPA)
The Division conducted EPA -recommended analyses to determine the reasonable potential
for toxicants to be discharged by this facility, based on DMR data from February 2007 to
January 2009 and/or from the 3 PPA submitted with the renewal application. Mercury DMR
data evaluation was expanded to include all available data that utilized, the more sensitive
Method 1631 test which began in 2005. Besides mercury evaluations, RPAs were conducted
for arsenic, antimony, beryllium, cadmium, chloroform, chromium, copper, cyanide,
dichlorobromomethane, lead, nickel, thallium, selenium, silver, and zinc.
Results suggest reasonable potential for the facility to discharge copper, silver, and zinc in
excess of WQS. However, these toxicants are action level parameters and this facility is
consistently passing its chronic toxicity tests so no limits will be imposed at this time.
Monitoring for zinc and copper will be reduced to quarterly to coincide with the chronic
toxicity test. The silver data provided in the annual PPA is sufficient for future evaluations. If
in the future this facility begins consistently failing its toxicity test the Division may reopen
this permit and the appropriate limits imposed.
Results suggest reasonable potential for the facility to discharge dichlorobromomethane in
excess of WQS. There were only three data points available 'from PPAs, two below the
detection limit and one below the defined WQS limit. Based on best professional judgment
limits with 2/month monitoring will be imposed. Since there is only a chronic WQS, to be
consistent with EPA guidance the same limit value will be imposed as a monthly average and
daily maximum.
The RPA for nickel suggest no reasonable potential for the facility to discharge nickel in
excess of the WQS. The nickel RPA value is 11.7 pg/I which is significantly below the lowest
permit limit of 97 pg/I. Therefore, the nickel limits are removed and monitoring reduced to
monthly.
The mercury data had an average value of 3.8 ng/ and none of the 18 reported values
exceed the mercury limit of 13 ng/I. The Division has determined that this facility has
demonstrated its discharge does not violate the applicable WQS and is consistent with the
Lumber River Basin strategy and TMDL. Quarterly mercury monitoring using Method 1631
will continue. The mercury reopener condition will remain.
Data review
DMRs were reviewed for the period of February 2007 to January 2009. DMR data is
summarized in Table 1 and Table 2 below:
Table 1
Flow*
(MGD)
Dissolved
Oxygen
(mg/L)
BOD*
(mg/L)
TSS*
(mg/L)
NH3-N*
(mg/1)
Fecal*
Coliform
(#//100 ml)
Total
Residual
Chlorine
(mg/I)
13.1
Average
0.313
11.72
2.19
3.97
0.08
28.8
Maximum
0.79
17.5
3.2
7.1
0.2
430
25
Minimum
0.11
6.6
1.6
1.8
< 0.1
< 1
0
Note: .* Statistical values based on monthly average
Percent Removal: Based on BOD 96.0%-98.6%, Based on TSS 94.4% - 99.4%
Fart Sheet
NPE)E S NC'OO21N3I
Page 2 45

Table 2
pH
(S.U.)
Total
Nickel
(mg/L)
Average
7.32
8.6
Maximum
7.9
10
Minimum
6.5
5
IWC Calculation
The historical stream flow data provided was applied to the ammonia as nitrogen calculation.
There was a small impact that will. increase the allowable limits as defined by Division policy.
Whole Effluent Toxicity
The current permit requires quarterly chronic toxicity testing using ceriodaphnia dubia, at
90% effluent concentration. The facility passed the toxicity tests reveiwed and all four of the
second species toxicity test submitted with the application. Will continue quarterly chronic
toxicity testing. Will edit narrative to reflect latest special condition text.
Priority Pollutant Analysis
The results of 3 PPA were submitted with the permit renewal application. See the RPA
section for any noted pollutants. Will continue to required submittal of PPA annually.
Instream Data Impact
Temperarture and Dissolved Oxygen are measured routinely at designated points upstream
and downstream from the discharge into Soules Swamp. The 2007 and 2008 instream data
and effluent data was compared. Given the low flow and swamp classification for the
receiving stream the data was typical for this environment. Will continue instream sampling
program.
Effluent conductivity
A trend chart was generated. No significance was •noted. Based on best professional
judgment will remove this requirement.
Effluent Limitations and Monitoring Requirements
BOD & TSS
Monitoring with a weekly average limit and a monthly average limit will continue. Influent
monitoring will continue to provide data for the minimum 85% removal limit calculation.
Monitoring with a limit range will continue.
DO
Monitoring with a daily average minimum limit will continue. Seasonal upstream and
downstream monitoring will continue.
Fecal Coliform
Monitoring with a weekly average limit and a monthly average limit will continue.
Ammonia as Nitrogen
To sustain compliance with Division standards monitoring with seasonal weekly average
limits and a monthly average limit will be increased continue. The new limits arc based on a
WC-- 91.2%.
Chronic Toxicity
To sustain compliance with Division standards quarterly Chronic Toxicity monitoring with a
limit will continue.
•
Fact Sliect
NPDFS NCOO21831
Page 3 015

TRC .
To sustain compliance with Division standards monitoring with a daily maximum limit will
continue. A footnote narrative will be added to define the measurement and reporting
protocols.
Dich lorobromometha ne
To comply with the RPA and meet compliance with Division standards 2/month monitoring
with a monthly average and daily maximum limits was added.
Effluent Monitoring Requirements
Copper and Zinc
As action level parameters quarterly monitoring will be required and measured to coincide
with the chronic toxicity test.
Mercury
Quarterly monitoring will continue using Method 1631E.
Total Nitrogen, Nitrite/Nitrate Nitrogen, Kjeldahl Nitrogen
Total Nitrogen , TN = (NO2-N + NO3-N) + TKN), will continued to be calculated and reported
quarterly. For consistency the measured Nitrite/Nitrate Nitrogen (NO2-N + NO3-N) and Total
Kjeldahl Nitrogen (TKN) values used in the calculation will be reported.
Total Phosphorus
Monitoring will continue in the permit.
Temperature
Monitoring will continue. Seasonal upstream and downstream monitoring will continue.
Special Condition Requirements
The mercury reopener special condition will continue.
To provide a method to track the diversion of wastewater to the holding ponds a special
condition was developed and added in this permit Wilmington Regional Office is the contact
point for the permittee to alert in regards to the diversion events.
SUMMARY OF PROPOSED CHANGES
In keeping with Division policies the following will be incorporated into the permit:
o Effluent monitoring for conductivity has been removed.
o Effluent limits for nickel have been removed.
o Effluent monitoring for nickel has been reduced to monthly.
o Effluent monitoring for copper has been reduced to quarterly.
o Effluent monitoring for zinc has been reduced to quarterly.
o Effluent monitoring, 2/month, for dichlorobromomethane with limits has been added.
o Reporting of effluent nitrite/nitrate nitrogen has been added.
o Reporting of effluent total kjeldahl nitrogen has been added
o Narrative footnote for TRC has been added.
o Narrative update to the chronic toxicity special condition has been completed.
o A special condition for alerting the Wilmington Regional Office when wastewater is
diverted to the holding ponds has been added.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE
Draft Permit to Public Notice: November 4, 2009
Permit Scheduled to Issue: January 2010
Fact Shcct
NPDES Nt'0021N 1
Page 4 of 5

NPDES DIVISION CONTACT
If you have questions regarding any of the above information or on the attached permit,
please contact Ron Berry at [phone] or email [e-mail].
NAME: tr" Iiv` � DATE: f f /3/(y)
REGIONAL OFFICE COMMENTS
NAME: DATE:
SUPERVISOR: DATE:
}'act Shcct
\PDI.`',..('11U21N;1
P,v.r 5 015

Berry, Ron
From: [e-mail]
Sent: Wednesday, November 18, 2009 12:46 PM
To: Berry, Ron
Subject: re NC0021865, Chadboum WWTP
EPA has no comments on this draft permit.
1

AI-I-IUHVI I UI- HUI:3LIUA I SUN
ORTH CAROLINA
umberland County
Public Noticc
North Carolina Enviro,mcn
tal Management
Commission/NPDES Unit
1617 Mail Service Center
Raleigh. NC 27699-1617
Notice of Intent to Issue a
NPDES Wastewater Pettit
The North Carolina Environ -
mental Management Com-
mission proposes to issue a
NPDES wastewater dis •
;barge permit to the
pason(s) listed below.
Written comments regarding
the proposed pemtit willbe
the pub until 30 days afro-r
;he publish date of this no-
nce. The Director of the NC
Division of Water Quality
(DWQ) may bold a public
hearing should there be a
e.ficant degree of public
interest Please mail cot -
ments and/or information re-
quests to DWQ at the above
address. Interested persons
may visit the DWQ at 512 N.
Salisbury Street. Raleigh. NC
to review information on file.
Additional information on
NPDES permits and this no-
ticc may be found on our
website: • www.ncwaterquali
ty.org• or by calling (919)
307-6304.
The City of Whitcville re-
quested renewal of permit
NC0021920 for its Wluteville
WRF in Columbus County.
This permitted discharge is
treated domestic and indus -
trial wastewater to White
Massb Swamp in the Lumber
River Basin.
The Town of Cbadboum re-
quested renewal of permit
NC0021865 for its
Chadbourne WWI? in Co-
lumbus County. This pemtit -
;ed discharges is treated do-
mestie wastewater to Soules
Swamp in the Limber River
Basin.
Written comments regarding
the proposed. permit will be
accepted until 30 days after
the publish date of this no -
tice.
1320760
Before the undersigned, a Notary Public of said County and state, duly
commissioned and authorized to administer oaths, affirmations, etc.,
personally appeared. CINDY L. OROZCO
Who, being duly sworn or affirmed, according to law, doth depose and say
that he/she is LEGAL SECRETARY
of THE FAYETTEVILLE PUBLISHING COMPANY, a corporation organized
and doing business under the Laws of the State of North Carolina, and
publishing a newspaper known as the FAYETTEVILLE OBSERVER, in the
City of Fayetteville, County and State aforesaid, and that as such he/she
makes this affidavit; that he/she is familiar with the books, files and
business of said Corporation and by reference to the files of said publication
the attached advertisement of CL Legal Line
PUBLIC NOTICE NORTH CAROLINA
of NC DENR/DAQ/BUDGET OFFICE
was inserted in the aforesaid newspaper in space, and on dates as follows:
11/7/2009
and at the time of such publication The Fayetteville Observer was a
newspaper meeting all the requirements and qualifications prescribed by
Sec. No. 1-597 G.S. of N.C.
The above is correctly copied from the books and files of the aforesaid
corporation and publication.
LEGAL SECRETARY
Title
Cumberland County, North Carolina
Sworn or affirmed to, and subscribed before me, this 9 day
of November, A.D., 2009.
In Testimony Whereof, I have hereunto set my hand and affixed my
official seal, the day and year aforesaid. ,,,,,,,
FN spy
Kirsten�E� Speer, Notary Public S.
NOTARYSI
7.�
U^
r.
My commission expires 12th day of September, 2011. S CI PUBL\C ?
MAIL TO: NC DENR/DAQ/BUDGET OFFICE
1641 MAIL SERVICE CENTER, ,
RALEIGH, NC 27699-00001641
0001820760

REASONABLE POTENTIAL ANALYSIS
Town of Chadbourn WWTP
NC0021865
Time Period Feb 2007 - Mar 2009
Qw (MGD) 1
7Q10S (cfs) 0.15
7Q10W (cfs) 0.2
3002 (cfs) 0.2
Avg. Stream Flow, QA (cfs) 6
Reeving Stream Smiles Swamp
WWTP Class III
IWC (%) @ 7Q10S 91.176
(� 7QIOW 88.571
30Q2 88.571
122 QA 20.53
Stream Class C, Sw
Outfall 001
Qw =1 MGD
PARAMETER
TYPE
ttl
STANDARDS &
CRRERIAS2)
PQL
Units
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC Wes/ IsFAV/
Monk Harts
a ODD, As ProdCw AAowibf&Cw
Arsenic
C
50
ug/L
3 0
Note: n<12
Limited data
2.5
set
Acute: N/A
Chronic: 244
Rdgs toss then PQL, No WQS exceeded
PPA;t onitored, ; - .y...,
Beryllium
C
6.5
ug/L
3 0
Note: n<12
Limited data
0.5
set
Acute: WA
_ _ _ _ _ _ _
Chronic: 32
_ _ _
Rdgs less than POL. No•WQS exceeded
PPAns`oriitored , 3,_..1_ .
Cadmium
NC
2 15
ug/L
3 0
Note: n<12
Limited data
0.5
set
Acute: 15
_ _ _--___-_
Chranlc: 2
Rdgs less than PQL, No WQS oxceedad
'mo , „ . ,. pPArnonitoredY£4fx� �. .
Chromium
NC
50 1,022
uglL
3 0
Note: n<12
Limited data
2.5
set
Acute: 1.022
_ _ _ _ _
Chronic:.- 55
Rdgs I#10,than PQL. No WQS exceeded
PPA-tored �> �- : ' _
im. .7 -.
Rdga teas then PQ1..•No WQS exceeded
PPA monitored i 4 ... k ....
Copper
NC
7 AL 7.3
ug/L
51 51
33.5
Acute: 7
Chronic: 6
AL.>passl tytestasiz 4:
Reduce monitoring lc;qusrterly
AL passing toxicity teats -- - - - - - -
•
Reduce mswnitodng�to'quarterty , ....
Cyanide
NC
5 N 22
10
uglL
3 0
Note: n<12
Limited data
5.0
set
Acute: 22
Chronic 5
Rdgs s then F a WQS exceeded
PPA monitored
Rdgs iess,than PQL.`No WQS exceeded
PPA'monitored . ` i
Chloroform
C
170
ug/L
3 3
Note: n<12
Limited data
234.7 •
set
Acute: N/A
_-_
Chronic: 828
{ k h ,
'?;
RPA Nnd Gatos WQS, riot exceeded
PPA r oititoredi V .`: - --: -= ...
Lead
NC
25 N 33.8
•
ugll
3 0
Note: n<12
Limited data
2.5
' .
set
Acute: 34
_ _ _ ___
Chronic 27 -
Rdgs teas than PQ�L No WQS exceeded
PPArnorEtored; n�' k r•r
�Rdgs teas than PQL. No WQS 9xc oiled'''
PPA monitored i. :rc�:.`. ,;.,.:
Mercury
Used DMR data
2005.2009 (18 rdgs)
NC
12
2.0000
ng/L
18 18
27.6150
Acute: WA
_ _ _ _ _ _ _ _
Chronic: 12.0
NVC apptoa 13.2
Lumber_ leer inrpeired for t' no; MC allawod
No, ddgs above i2itigllusing Method 1631
Continuo roc a 'i ondition in permd -
Conitoue. monitodng".
Antimony
NC
640
ug/L
3 0
Note: n<12
Limited data
•
1.5
set
Acute: -- WA
Chronic: 702
v ft y ., •
r `'� '
REAlndicato {W S xceeded` x c
PPA.monitored ,Ys <
Nickel
NC
88 281
uglL
108 105
11.7
Acute: . 281
97
RPAmkldtCetes QS exceeded ..,. 1�1,.. ,� mo{not
Reovreducee tircit, nttodng to monthly
--rChronic:
RP cnuexcex - y,
Remove" eronItoiigtommony
Thallium
NC
0
uglL
3 0
Note: n<12
Limited data
0.5
set
Acute: - N/A
Chronic 0.52
Y.-
It PA ndieates • clod ri
PPA monitoi?� •fi : •,' ��xu .z...
Selenium
NC
5.0 56
ug/L
3 0
Note: n<12
Limited data
5.0
•
set
Acute: -- -- 56
Rdgs less tee • • Na cps exceoded
PPAmcrtiforod
Chronic 5-
i s_,leasJthen WQs cxcoeded
PPA,monEtore . n: <. .:z..,i'V
Silver
NC
0.08 AL 1.23
ug/L
3 0
Note: n<12
Umtted data
2.5
set
Acute: 1.23
Chronic: 0.07
wpassirlg textcit is c ' z xri:
aPQL�Io WQS exceeded PPA tonita RdgS.eon red
ALlpass!ng to kIty„1 '. r_;: -.
Fides less.than PQL. No.WQS oxceeded. PPA monitored
Zinc
NC
_.
50 AL 67
uglL
- -
49 48
- --- - . --
58.6
Acute: • 67
_-
�Chrontc: - 55 -
AL: Seel, n01 t' n ` k' u� x ; x
Reducomonttocf g;hi_quartody .
AL. passie° toxtCityi tests -
Reducaxnonftottng taquerterty
• Legend:
C = Carcinogenic
NC = Non.cwcfnogenic
A = Aesthetic
" Freshwater Discharye
RPA, rpa
10/3C/2009

REASONABLE POTENTIAL ANALYSIS
Town of Chadbourn WWTP
NC0021865
Time Period Feb 2007 - Mar 2009
Qw (MGD) 1
7Q10S (ds) 0.15
7Q10W (ds) 0.2
3002 (ds) 0.2
Avg. Stream Flow, QA (ds) 6
Rec'g Stream Sottles Swamp
WWTP Class 11I
!WC (%) @ 70108 91.176
© 7Q10W 88.571
@ 30Q2 88.571
@ QA 20.53
Stream Class C, Sw
Outfall 001
Qw =1 MGD
PARAMETER
TYPE
(1)
STANDARDS &
CRITERIA (2)
PQL
Units
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC MS/ X FAV/
Chronic Acute
n II04 UsxPod Cw A keabb CW
Din.
C
17
uglL
3 1
Note: n<12
Limited data
293.8
set
Acute: N/A
Chronic: 83
Per EPA crtteda add daily inox , no acute WQS tQ apply._
Da1yi max brit iii thorn c Broil
One rdg'above PQL, RPA•st ggesta exceeding chronic WO
Add tmt monthly avg. with 2lmonth stonitodng''
0 0
N/A
Acute: WA
Chronic: WA
^
— — — — —
0 0
WA
Acute: N/A
_ _ ___ _
Chronic WA
Acute: N/A
-Chronic: N/A
4
f za 2 i a
r % �k` „
0 0
N/A
Acute: N/A
Chronic: N/A
0 0
WA
Acute: NIA
5: ti ,' 2 a i ti . x �3 0 v" e :•
x,.�
0 0
N/A
Acute: N/A
Chronic: WA
,.�
r ye `, fl<
d y _ rq- rr, x ;
0 0
N/A
Acute: WA
Chronic: N/A
.' >n " t� -
` , isy s es ti s `• '5
0 0
WA
Acute: WA
______
Chronic: - WA
h > < ' � 3 s k , .
'`
—
0 0
WA
Acute: N/A
Chronic: WA
' ` hs sx
�k xx
f
;c
0 0
.
N/A
Acute: WA
_______
Chronic: NIA
s ¢ ,u x tz {, , q�
_ �:� � s ti w i'
0 0
WA
Acute: N/A
Chronic:/A ---
. -j _ �:. -<
z w � — •
3. �v
0 0
N/A
Acute: WAr�'
Chronic WA
era- }ter'
0 0
WA
Acute: • N/A
—
Chronic: WA
� � � �- ���
' .t, ^ r? z � 'Il` ^ems
rr. wr.+....
.z? ;w y �'
0 0
WA
Acute: WA
Chronic: WA
:ixrti c , ti •X
� x
�� •`` byy r"
•Legend:
C = Carcinogenic
NC = Non -carcinogenic
A = Aesthetic
•• Freshwater Discharge
RPA2. rpa
11/2/2009

1/13/2010 IWC Calculations
Chadbourn
NC0021865
Prepared By: RD,
Enter Design Flow (MGD):
Enter s7Q10(cfs):
Enter w7Q10 (cfs):
Assume upstream TRC level = 0
Assume upstream Fecal level = .0
Check Box if WTP Facility ❑
Enter Upstream NH3-N Level (mg/L):
2
Total Residual Chlorine
7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (UG/L)
UPS BACKGROUND LEVEL (l
IWC (%)
Allowable Conc. (ug/I)
Fecal Limit
(If DF >331; Monitor)
(If DF <331; Limit)
Dilution Factor (DF)
1
Ammonia (NH3 as N)
(summer)
0.15 7Q10 (CFS)
1 DESIGN FLOW (MGD)
1.55 DESIGN FLOW (CFS)
17.0 STREAM STD (MG/L)
0 UPS BACKGROUND LEVEL (I
91.18 IWC (%)
19 Allowable Conc. (mg/I)*
WEEKLY AVG LIMIT (mgll)
-- - - - -Ammonia-(NH3 as N)
. ��, (winter)
0.15
1
1.55
1.0
0.220
91.18
2.0
6.0
7Q10T(CFS)'`rE:�in� 1 t�c_� le 1t. a� 0.2
200/100mI • DESIGN 'FLOW;(MGD) • 1
-- - - - - .DESIGN FLOW-(CFS) . 1.55
• 1.0 r) STREAM'STD'(MG/L)' ' ' ' ' 1.8
`1 10'' UPS BACKGROUND LEVEL -(I 0.220
_ r. _`.�_'- _ ----- JWC v _ .. - . -- - 88.57
Allowable Conc. (mg/I)* 4.0
WEEKLY AVG LIMIT (mg/I) 12.0
(_,;,rllnlf::)
Check other limit docs such as basin plan -or model
NPDES Servor/Current-Versions/IWC 0
0.' '
(C:
- � r
* MONTHLY AVG LIMIT; -
(3)
SIRE_AMSID(1V+�„�L)
UPS. Fi\e'.=`. (1
}
Limit MAX
35.0 mg(L
NON-POTW
2.0
10.0
(MONTHLY/DAILY)
NON-POTW
4.0
20.0
(MONTHLY/DAILY)
IJ
Vie rahLY• VG
Ann
(winte:•)
7Q1C►-(CFS) .? l..
20u;1 CUnI! DESIGN : L
F
ST F.)
I.i:► UPS
of I
1/1
1/13/2010

• Date:,10/19/09
pb:rdb
DMR Data for NPDES Permit NC0021865
Town of Chadbourn WWTP
❑ - NH3-N Weekly Avg --♦— NH3-N Monthly Avg —Weekly Avg Max Limit —Monthly Avg Max Limit
14
12
10
8
�C0
E
6
4
2 —
0
�::..�:'�..'��.. a �! ,' .r.r :.�■ ram• �rr�R �.'• '�. .:����. ���..� Ems' �r��.. '.�. "�! •�r�� .�A !!
l:�r-.acav:
r� r� �� � rY. Cr�. r '-�..�rr rr L�r..rr� .-rr � �i .� r •r r �r r Y..rrZ ram- • •.. r
O O O O O
f9 a
u- 2 a 2 -,
rs. Ps
O O O
O
0
0
0
Z
O
u
0
00
0
c
f9
co co co co co co oo
O O O O O O O
1 L L 1 1 I 1
..6 a c ▪ 04
LL 2 RI a 2
▪ Q
CO
O
Q
011
O • O • O • 0
.% > u c
o z0
0
30.0
25.0
20.0
15.0
10.0
5.0
0.0
—o— TRC Rdg —TRC Max Daily Limit (50 µg/I COMPLIANT)
0:0
A
V V ♦ V'y<•IY
u
4I
- 0
A A3 I
[ill
Ir,
V
(.7 y I•
A
J
>r c.10
ac
nvr•• 4,,i�l
t� ; dC11rl
f y:• 111
(•; ".0 .•,
A
AI A
V V
C.
A -
sV
A
1�.
A
C. 1 •
N n Ps I, N N r, n rn r. n CO 00 00 00 00 00 00 00 00 0o 0o 0o a1
O O O O O O O O O O O O O O O 0 0 0 0 O O O 0 0
1 1 . I 1 1 1 1 I 1 1 1 1 1 1 1 4• 0
1 1 I
y • a co - 3 001 t; o a m o n io a ... c 0 to
�,. 2 a 2 < in o z 0 U. 2 ¢ 2 - Q in O z 0
E
45.
40.
35.
30.
25.
20.
15.
10.
5.
0.
O TP Rdg
0-
O
O O O O O O
co f9 C. i0 co
2 2 a 2
O
O 50 C.
CU
< V1
O O
0 ▪ 0
O O
2 ❑
cam, c CU a. ea a$ ru
o c
❑ - f• i u.2 a a 2
0
CO CO � O CO 0 CO 0
a' fn fn 0 z° z°

Date: 10/19/09 DMR Data for NPDES Permit NC0021865
pb:rdb Town of Chadbourn WWTP
30.
25.
20.
▪ 15.
0 TN Rdg
0
0
O
r• n r` n N. N r. n n rN 00 00 CO CO CO 00 CO 00 00 00 00 00
O O 0 O 9 0 0 O 0 0 0 O O O 0 0 O 0 O O 0 0
1 I I 1 1 1 1 1 1 1 1 ! I 1 1 1 1
? c OA Q o. > t 7
▪ a a' • 0 z° 0 • a a' l 0 0 0
12.
10.
8.
ob 6.
2.
0.
0 Mercury Rdg
0
O
0
0
0
O
-0 O
0
O
0
0
0
0 0
T 1 i I 1 1 1 1 I T 7 TI I III I I i 1
IJ1 u1 u1 it in to w to w w w r` n n r. r. N 00 0o 0o 00 0o CO 01 rn CT rn rn
0 0 0 0 0 0 0 0 O 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1 I 1 1 1 1 , 1 1 I 1 1 I 1 1 1 1 1 1
L > • a > • c L >. > c L >. a > • c � >, • a
30.
25.
o Copper Rdg
O
0 O O O 0
20. O -p O O O 0
10.
0.
-O
O
r.
9
.
0 0 0
fo
n
0
a
1- N n 00 00 CO 00 00 00 00 00 00 00 CO CO 01
0 O 0 0 O O O O O O O O O O 0 0 0
1 1 1 1 1 1 I 1 I 1 6
1
N o 0 0 `° ° a g a Ui o z° 0 '°

Date: 10/19/09
'pp:rdb
DMR Data for NPDES Permit NC0021865
Town of Chadbourn WWTP
3.50 -
3.00 -
2.50 -
2.00
O Flow Rdg
• Flow Monthly Avg -Permitted Flow
0
O
1.50
1.00
O
0.50 -
0.00
N0 N
a) co
u. g
n
9
0.
a
n
0
r0
n r
0 0
0 0
tto
m
a w
♦
0 O o
O
n n N 00 CO 00 00 CO 00 CO 00 00 CO 00 CO rn
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1 1 I 1 1 1 . I 1 1 / I 1 1
> u c oD a > u c
0 z 0 �6 19 O. H 0 Z 0co
E
10.0 -
9.0
8.0 -
7.0 -
6.0 -+
5.0 -
4.0 3.0 2.0 -
1.0 -
0.0
• BOD Monthly Avg ❑ BOD Weekly Avg -Monthly Avg Max Limit
Weekly Avg Max Limit ---x BOD % Removal % Removal Min Limit
❑❑
R- da-o
o
-e
0
100%
95%
90% 173
0
- 85%
N N NN N N N N N 1- h 00 CO 00 CO CO CO CO 00 CO 00 CO CO 01
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
1 / 1 1 I / 1 1 1 1 , 1 1 1 1 1 1 . 1
ao Q +• > u 6 .0 >. 0 43 a > 6 c
1° Q CO ? aJ O d LL Q c0 0 0 0 0
u.2 a z o g a z
80%
75%
E
50.0
45.0
40.0
35.0
30.0
25.0
20.0
15.0
10.0
5.0
0.0
• TSS Monthly Avg 0 TSS Weekly Avg -Monthly Avg Max Limit
-Weekly Avg Max Limit TSS % Removal % Removal Min Limit
x
iE---j�
0
9
0
00
Q
0
0.
0)
O
0
0
z
0
0
0
♦ ❑ ❑
J �fJ `-' � *3111 i i.
co
00 CO 00 CO CO CO CO 00 CO CO 00 01
0 0 9 0 0 0 9 0../. 0 0 0 0 0
�. .� I 1 >` c ...I 1 > {�
f0 OJ CO 0. r0 3 0! 0 0) (5
u. 4 Q N 0 z 0
0
100%
95%
90%
0
E
00c
85% a°
80%
75%

Date: 10/19/09
pb:rdb
DMR Data for NPDES Permit NC0021865
Town of Chadbourn WWTP
•
1
O
a
600 -r
500 —
400
300
200
❑- Fecal Coliform Weekly Avg —•— Fecal Coliform Monthly Avg
—Monthly Max Limit
Weekly Max Limit
10o T
0
N N n N n n n n n N 00 00 CO CO CO 00 00 00 00 00 00 00 01
O O O O O O O O O O O O O O O O O O O
r r r r r r 1 .
a)f0 �• j 7 d V O coO. (o 7 d O of CO
Lt.Q -. Q Li) 0 z o - u. 2 a 2 Q V1 0 z 0
9.5 --
9.0
8.5 8.0 -
7.5 +
N
7.0
6.5
6.0
5.5
—0— pH Rdg —Range Limits
0 0
0)
1L g
1'- I-. N r. N f� 00 00 00 00 00 00 00 00 00 00 CO 00 01
O O 0 0 0 O 0 0 0 0 0 O 9 0 0 O 0 0 O O O O
r r r . r r �: r r r . r
�- C do a > u o. to
6 OD Q +' > tJ
a 2 Q' un 0 z 0 LL a g ' a �n 0 z 0 `°
19.0
17.0
15.0
9.0
7.0
5.0 1
o -- DO Rdg —DO Min Daily Avg Limit
n n N N N N N N N N CO 00 00 00 00 00 00 00 00 00 00 00 01
O O O 0 O O 0 O O 0 0 O O O O 0 O O 0 0 0 O 0 O
r r r r r r . r r r r r r . r r r r r r r r
►- >. c as a > u c +- >- c ao 6. > u c
co `° a `° N 0 0 0 LL a 2 - a n 0 z `°
a

Date: 10/19/09
pb:rdb
DMR Data for NPDES Permit NC0021865
Town of Chadbourn WWTP
300
250
200
150
100 -
50
0
Nickel Rdg —4— Weekly Avg —Monthly Avg Limit —Daily Limit
r r r r r r r r r
N. 1� 1� 1� N. 1.. f. I� 1� N CO CO 00 00 00 CO CO CO 00 CO 00 00 tT
O O O O O O O O O O O O O O 0 O O 0 0 O 0 O 0
r r r r r r r r r r r r r r r _ r r r r r
r" > c oo a > u c .o 0 > c 3 ao 0) > u
N tD Q. (ts J O! 0 0) (o d Ll fo OJ O tll (o
u.a O z 0 u- 2 < 2 a v� o z
45.
40.
35.
30.
_ 25.
20.
15.
10.
5.
0.
o Zinc Rdg
n n n N n i. n r• N N 00 CO CO 00 CO 00 00 00 00 00 00 00 a1
0 o O 0 0 o 0 0 0 0 0 O 0 O o 0 0 o 0 O o 0 0 0
s r r
0 > c ao Q ri > U c .6 L > c 8o o. v > V c
LL 2 Q 4.0
-, -' < (n 0 z 0 ., u- 2 Q 2 < ii O z 0co
30.
25.
20.
;-' 15.
10.
5.
0.
o Temperature Rdg
•
•,•
11♦ 40,4
•
.p
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v
0
<•)
♦..).
<S• •(.>
•
•
•
•
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♦
0
0
n 0 0 or:
n
2 a 2
9
N. 1� N N N CO 00 00 00 00 00 00 CO CO CO 00 00 01
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
< (n O Z 0ett 0- ea u a Q (n O z 0 go

Date: 10/19/09 DMR Data for NPDES Permit NC0021865
pb:rdb Town of Chadbourn WWTP
3/6/07 THP3B - CHV STATRE 7Day CHR Ceriodaphr Biological Composite percent > 90%
3/10/07 THP3B - CHV STATRE 7Day CHR Ceriodaphr Biological Composite percent > 90%
6/5/07 THP3B - CHV STATRE 7Day CHR Ceriodaphr Biological Composite percent > 90%
6/8/07 THP3B - CHV STATRE 7Day CHR Ceriodaphr Biological Composite percent > 90%
9/4/07 THP3B - CHV STATRE 7Day CHR Ceriodaphr Biological Composite percent > 90%
12/4/07 THP3B - CHV STATRE 7Day CHR Ceriodaphr Biological Composite percent > 90%
3/4/08 THP3B - CHV STATRE 7Day CHR Ceriodaphr Biological Composite percent > 90%
6/11/08 THP3B - CHV STATRE 7Day CHR Ceriodaphr Biological Composite percent > 90%
9/9/08 THP3B - CHV STATRE 7Day CHR Ceriodaphr Biological Composite percent > 90%
12/2/08 THP3B - CHV STATRE 7Day CHR Ceriodaphr Biological Composite percent > 90%
3/6/07 TGP3B - P/F STATRE 7Day Chr Ceriodaphnia Biological Composite pass/fail Pass
3/10/07 TGP3B - P/F STATRE 7Day Chr Ceriodaphnia Biological Composite passlfail Pass
6/5/07 TGP3B - P/F STATRE 7Day Chr Ceriodaphnia Biological Composite passlfail Pass
6/8/07 TGP3B - P/F STATRE 7Day Chr Ceriodaphnia Biological Composite passlfail Pass
9/4/07 TGP3B - P/F STATRE 7Day Chr Ceriodaphnia Biological Composite pass/fail Pass
9/7/07 TGP3B - P/F STATRE 7Day Chr Ceriodaphnia Biological Composite pass/fail Pass
12/4/07 TGP3B - P/F STATRE 7Day Chr Ceriodaphnia Biological Composite pass/fail Pass
3/4/08 TGP3B - P/F STATRE 7Day Chr Ceriodaphnia Biological , Composite pass/fail Pass
6/11/08 TGP3B - P/F STATRE 7Day Chr Ceriodaphnia Biological . ' ' Composite pass/fail Pass
9/9/08 TGP3B - P/F STATRE 7Day Chr Ceriodaphnia Biological Composite pass/fail Pass
12/2/08 TGP3B - P/F STATRE 7Day Chr Ceriodaphnia Biological Composite pass/fail Pass
Second Species Tests - Fathead Minnow
6/10/2008
9/9/2008
12/2/2008
1/13/2009
3/10/2009
No data -rerun
Pass > 90%
Pass > 90%
Pass > 90%
Pass > 90%
800.
700.
600.
• 500.
• 400.
E
300.
200.
100.
o Conductivity Rdg 12 per. Mov. Avg. (Conductivity Rdg)
0
a
a)
V1
O
0
z
iv
O
00
c
•
9 0 co
▪ L • �o 0.
u. g a
4 4 _4 ' 4 c
2 > -I Q > > o
H
CO
0o o G
O Z p

.
Date: 10/22/09
Stream Impact Permit NC0021685
Town of Chadbourn WWTP
Temperature, °C (Monthly Average)
Effluent 0 Upstream a Downstream
N N n N N. N. N N N- n N o0 0o ao 00 00 00 00 00 00 0o 00 00 4
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0 >• c 3 0a a 'i > u c .n +- a ro c 0 0o a i > u c
- g Q g 2 < in o z 0 f, u 2 a g- a N o z 000
18
16
14
mo
ra
> 12
a
10
c
0
i 8
% 6
E
0 4
- Effluent 0 Upstream a Downstream
2
0
N N. N r. N N N i. N. Ps n 00 00 00 00 0 00 CO 00 00 CO CO 00 rn
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
.0 L ." A c 40 O. '' > U c , ►. c 00 a �' > r.r c
a, a co 3 = a) o a CO0) CO 0. eo = ar u 0 0) CO
LL g a g a ,,, o z c �,, g a g -, a H o z 0

PO -s File Cool
TOWN OF CHADBOURN
"The Strawberry Capital"
602 NORTH BROWN STREET • CHADBOURN, NORTH CAROLINA 28431
TELEPHONE: [phone]
January 29, 2009
Mrs. Dina Sprinkle
NCDENR/DWQ/Point Source Branch
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
ECEFk'ED
DENR-WAEROUAL!TY
PONT SOURCE BRANCH
Reference: Town of Chadbourn —NPDES Permit Renewal Application Permit No. NC0021865
Dear Mrs. Sprinkle:
The Town of Chadbourn requests renewal of the above referenced NPDES permit for the
operation of the Town's Wastewater Treatment Plant (WWTP). Enclosed are two (2) copies and
one (1) original of this cover letter, two (2) copies and one (1) original of the completed EPA
Form 2A, and the following narrative describing the sludge management plan for our facility.
Sludge Management Plan — The Town of Chadbourn's Sludge Management Plan consists of the
following:
• The waste sludge from the WWTP is sent to one (1) of two (2) digestion tanks.
• The sludge remains in the digestion tank for thirty (30) days.
• The Town uses contractors to transport the sludge from the digestion tanks and top spray
it onto permitted fields.
Thank you for your help in this matter. If you have any questions, please do not hesitate to
contact me at the Town of Chadbourn at: [phone].
Sincerely,
Stevie L. Cox
Town Manager
Attachments: One original and two copies of the EPA Form 2A with Narrative

SLUDGE MANAGEMENT
The Town of Chadbourn Sludge Manafgement Plan consists of the following:
• The waste sludge fore the WWTP is sent to one of two digestion tanks;
9 The sludge remains in the digestion tanks for 30 days:
• The town uses contractors to transport the sludge from the digestion tanks and top
spray it onto permitted fields.

Date: 10/20/09 Wastewater Treatment Plant Process for Town of Chadbourn
(As provided by ORC via phone)
Untreated Domestic Waste
0.5 MG
POND
Chlorine
Contact
Chamber
J.
Post
Aeration
0.5 MG
POND
f Chlorine
Dechlorination
Chlorine
Contact
Chamber
Effluent
Meter
Sulfur
Dioxide
Sulfur
Dioxide
Bar Screen
Chlorine --
Tertiary
Sand
Filter
Effluent
Composite
Sampler
Influent
Composite
Sampler
Influent Pump
Station
WAS Recycle
Clarifier
Decant
Aerated
Digester
40,000 Gal
Treated Waste Discharge to Soules Swamp
Grit Collection
Original Influent Meter
•
•
•
`
Dual
Aeration Basins
500,000 Gal
Clarifier
•
WAS
!Solids
WAS Recycle Meter
Aerated
Digester
90,000 Gal
a Application Site
DURING NORMAL OPERATIONS CLARIFIED WATER IS DIRECTED TO THE TERTIARY FILTER AND DOWNSTREAM POST TREATMENT.
THE EFFLUENT METER IS USED TO RECORD FLOW.
WHEN THE TERTITARY FILTER IS NOT USED CLARIFIED WATER IS DIRECTED TO TWO (2) 0.5 PONDS AND DOWNSTREAM POST TREATMENT.
A CALCULATED FLOW IS DETERMINED AND RECORDED BY DOUBLING THE INFLUENT;(VIETER FLOW AND SUBSTRACTING THE WAS.
RECYCLE FLOW.
PER ORC TRACY FORE 10/20/09

•
I
PAGE 02
FFLOan-
merek
•
Wastewater Treabnent 'Mani Pmecs far t'ie Town of Chadbourn .
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Application
SF.te •

FACT SHEET —LUMBER RIVER BASIN
REVIEW FOR EXPEDITED PERMIT RENEWALS
(Instructions for Permit Writer)
Basic Information To Determine Potential For Expedited Permit Renewal
Reviewer(s) / Date:
��3%a 9
heck If
CCorred
Permit Number:
NC0021865
Facility Name:
Chadbourn WWTP
Sub -basin number:
03-07-58
Receiving Stream:
Soules Swamp (Benson Millpond)
Permit Stream Classification:
C, Sw
Public WWTP
❑
Private WWTP
❑
WTP
❑*
Industrial
❑
Other
* If WTP, add permitted tlo lm'
GD): /. 0
CONY
GREEN
SAND
RO
IE
Pretreatment? ES NO
(If YES then contact PERCS for data RPA)
TRC limit/footnote? YES/ADD** NO
If in permit EDIT FOOTNOTE see TRC
(
FOOTNOTE text)
WET testing/footnote? YES/ADD** NO
(If in permit EDIT SPECIAL CONDITION see
WET language text, check footnote)
NH3imit? YES/ADD** NO
3
(If in permit check, edit LIMIT for applicable LIMITS
categories, monthly/weekly or wekly/daily)
**IWC evaluation needed? YES NO
IWC calculation in file? YES NO
Permit Special Conditions? YES/ADD NO
(If facility has BACKUP CHLORINATION see
SPECIAL CONDITION and FOOTNOTE text)
Instream monitoring? YES NO
(Check, edit where warranted)
303(d) listed? YES NO
Watch Listed? YES NO
Permit MODs since last renewal? YES NO
Compliance issues? YES NO
Existing expiration date:
8/31/2009
Next cycle expiration date:
8/31/2014
Miscellaneous Comments
* Apply WTP Permitting Strategy, WET may be required
** IWC requires 7Q10 flow data, check with Basin Coordinator for best source
Select Expedited Catergory That Applies To This Permit Renewal
SIMPLE EXPEDITED - administrative renewal with no changes, or only minor
❑ changes such as TRC or ownership change. Includes conventional WTPs (does not
include permits with Special Conditions, Reverse Osmosis, or Ion -exchange WTPs).
COMPLEX EXPEDITED - includes Special Conditions such as EAA, Wastewater
❑ Management Plan, 303(d) listed, toxicity testing, instream monitoring, compliance
concerns, edit NH3 limit, phased limits, stream re -class).
NOTT EXPEDITED - Mark all of the following that apply:
ajor Facility (municipal/industrial)
Q" Permitted flow > 0.500 MGD (requires full Fact Sheet)
❑ Minor Municipal with Pretreatment Program (SIUs)
O Minor Industrial subject to Federal Effluent guidelines
❑,Limits based on RPA (toxicants/metals, GW remediation for organics)
IV Other �7re��w�
1
2009 Lumber Basin Permit Review/Shared Drive/Lumber Basin