NC0043176_Permit (Issuance)_20020522

NPDES DOCUMENT !;CANNING COVER SHEET
NPDES Permit:
NC0043176
Dunn WWTP
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:
May 22, 2002
This document is printed on reuse paper - izore any
content 021 the reirerse side

NCDENR
Mr. Joseph Campbell
City of Dunn
P.O. Box 1065
Dunn, North Carolina 28335
Michael F. Easley
Governor
William G. Ross, Jr., Secretary
North Carolina Department of Environment and Natural Resources
Gregory J. Thorpe, Ph.D., Acting Director
Division of Water Quality
May 22, 2002
Subject: Issuance of NPDES Permit NC0043176
Dunn/Black River WWTP
Harnett County
Dear Mr. Campbell:
Division staff have reviewed and approved your application for an NPDES discharge permit. Accordingly,
the Division is forwarding 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 U.S. Environmental Protection Agency dated May 9,1994 (or as subsequently amended).
The following items appear in this FINAL permit:
• Chronic toxicity test language has been updated, requiring different follow-up procedures after a test
failure.
• The instream monitoring requirements continue to be waived as long as the permittee maintains
membership in the Middle Cape Fear River Basin Association. In addition, instream monitoring has
been deleted for fecal coliform and conductivity, based on the updated NPDES Permitting Strategy
for 100% domestic facilities.
• The permit expiration date has been changed to 9/30/06.
• Although not listed in the effluent sheet of the draft permit, this final permit continues the
requirement for influent monitoring for BOD and TSS in order to assess the 85% removal
requirement.
• Based on EPA comments on several draft permits, this final permit reflects a new Special Condition
(A (3) - Ammonia Reopener) which will add a weekly average limit in addition to the monthly
average limit for ammonia. This new limit will be added during this permit term (if reasonable
potential exists), or at the next permit renewal.
Please note that mercury continues to be a water quality concern throughout North Carolina. NPDES
permittees have worked with the state to reduce potential risks from this pollutant, including tasks associated
with collecting and reporting more accurate data. The most commonly used laboratory analysis (EPA
Method 245.1) has a detection limit of 0.2 µg/L while the current water quality standard is an order of
magnitude lower at 0.012 µg/L. A more recendy approved analytical test (EPA Method 1631) should
produce a detection limit below the level of the standard. This will allow the Division to assess potential
water quality impacts from discharges more accurately. Therefore, beginning on or before September 1,
2003, you will be required to begin using EPA Method 1631 when analyzing for mercury according to terms
of your NPDES permit.
N. C. Division of Water Quality / NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
Internet: h2o.enr.state,nc.us
Phone: [phone]
fax: [phone]
DENR Customer Service Center 1 800 623-7748

Issuance of NPDES Permit NC0043Z 7u-
City of Dunn/Black River WWTP
Page 2
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, 6714 Mail Service
Center, Raleigh, North Carolina 27699-6714. Unless such a demand is made, this permit shall be final and
binding.
Please take notice that this permit is not transferable except after notice to the Division. The Division may
require modification or revocation and reissuance of the permit. The Division may require modification or
revocation and reissuance of the permit. This permit does not affect th6 legal requirements to obtain other
permits which may be required by the Division of Water Quality, the Division of Land Resources, the Coastal
Area Management Act, or any other federal or local governmental permit.
If you have any questions concerning this permit, please contact Tom Belnick at telephone number (919)
733-5083, extension 543.
Sincerely,
ORIGINAL SIGNED BY
Bill REID
Gregory J. Thorpe, Ph.D.
cc: Central Files
NPDES Unit
Fayetteville Regional Office, Water Quality
Point Source Compliance Enforcement Unit
Roosevelt Childress, EPA
Aquatic Toxicology Unit

s .P Permit NC0043176
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 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, the
City of Dunn
is hereby authorized to discharge wastewater from a facility located at the
Black River WWTP
Susan Tart Road
Harnett County
to receiving waters designated as the Cape Fear River 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.
This permit shall become effective July 1, 2002.
This permit and authorization to discharge shall expire at midnight on September 30, 2006.
Signed this day May 22, 2002.
ORIGINAL SIGNED BY
BILL RED
Gregory J. Thorpe, Ph.D., Acting Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit P+0043•?76.
SUPPLEMENT TO PERMIT COVER SHEET
The City of Dunn is hereby authorized to:
1. Continue to operate a 3.75 MGD wastewater treatment facility located at the Black River
WWTP on Susan Tart Road near Dunn in Harnett County. The facility includes the
following treatment components:
• Influent pumps
• Mechanical bar screen
• Aerated grit removal
• Influent flow measurement
• Aeration basins- 4 cells
• Three final clarifiers
• Dual gas chlorination and dechlorination
• Dual chlorine contact tanks
• Effluent pumps
• Effluent flow meter
• Cascade discharge
• Sludge handling including DAF sludge thickener, aerobic sludge digester, aerated
sludge holding tank, and sludge drying beds (optional use)
2. Discharge from said treatment works at the location specified on the attached map into
the Cape Fear River, classified WS-V waters in the Cape Fear River Basin.

1
f
Q. p J
1.- / ' Ai
�`.. wCa 4
Latitude:
Longitude:
USGS Quad #:
River Basin #:
Receiving Stream:
Stream Class:
35° 17' 31"
78°41'09"
F24SW
03-06-13
Cape Fear River
WS-V
Nt
1
o.
•"kc • sue
City of Dunn
Black River WWTP
Harnett County
NC0O43176

t
Permit NC0043176
A. (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is authorized
to discharge treated wastewater from Outfall 001. Such discharges shall be limited and monitored by the Permittee as
specified below:
EFFLUENT
DISCHARGE LIMITATIONS
MONITORING REQUIREMENTS
CHARACTERISTICS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
Type
Sample Locations
Flow
3.75 MGD
Continuous
Recording
fnfluent or Effluent
BOD, 5-day, 20°C
(April 1— October 31) 2
12.0 mg/L
18.0 mg/L
Daily
Composite
Influent and Effluent
BOD, 5-day, 200C 2
(November 1— March 31)2
24.0 mg/L
36.0 mg/L
Daily
Composite
Influent and Effluent
Total Suspended Solids2
30.0 mg/L
45.0 mg/L
Daily
Composite
Influent and Effluent
NH3 as N
(April 1— October 31) •
2.0 mg/L
3
Daily
Composite
Effluent
NH3 as N
(November 1— March 31)
4.0 mg/L
3
Daily
Composite
Effluent
Dissolved Oxygen.:Daily
Grab
Effluent
Fecal Colifomt
(geometric mean)
200/100m1
400/100m1
Daily
Grab
Effluent
Total Residual Chlorine
28 pg/L
Daily
Grab
Effluent
Temperature
Daily
Grab
Effluent
Total Phosphorus
Monthly
Composite
Effluent
Total Nitrogen
(NO2 + NO3 + TKN)
Monthly
Composite
Effluent
Chronic Toxicity5
Quarterly
Composite
Effluent
OP
Daily
Grab
Effluent
Temperature?
3/Week1
Grab
Upstream & Downstream
Dissolved Oxygen?
3/Week7
Grab
Upstream & Downstream
NOTES:
1 • Upstream = at NC Highway 217. Downstream = approximately 1400 feet below discharge.
2. The monthly average effluent BOD and Total Suspended Solids concentrations shall not exceed 15% of the
respective influent value (85% removal).
3. A weekly average ammonia limit will be developed at a later date; refer to Special Condition A. (3).
4. The daily average dissolved oxygen concentration as measured in the effluent shall not be less than 5.0 mg/L.
5. Chronic Toxicity (Ceriodaphnia) limit at 1% with testing in March, June, September, and December (see Special
Condition A. (2)).
6. The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
7. Instream monitoring shall be waived as long as the permittee maintains membership in the Middle Cape Fear
River Basin Association (MCFRBA), which conducts comprehensive instream monitoring. If the permittee
cancels membership in the MCFRBA, the facility shall begin collecting the listed instream samples immediately
at a frequency of 3/week Oune-September) and weekly (October -May).
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Permit NC0043176
A. (2) CHRONIC TOXICITY PERMIT LIMIT (Quarterly) — OUTFALL 001
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentration of 1.0%.
The permit holder shall perform at a minimum, quarterly 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: NC DENR / DWQ / Environmental Sciences Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Branch 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 Branch 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.
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.

r �
Permit NC0043176
A. (3) . AMMONIA REOPENER
The Division may re -open this permit to require weekly average limits for ammonia. After calculating allowable
concentrations, the Division will perform an analysis of past ammonia data to determine if there is a reasonable
potential 'for this discharge to exceed these potential limits. If there is, this permit will be re -opened. If there is not,
the permit will not be re -opened, but will contain weekly average limits for ammonia upon renewal.

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENTrro
��C�C�G�I�
NPDES No. NC0043176
Applicant/ Facility ;Name
Applicant
Facility Address
Permitted Flow
Type ;of Waste:';
Pretreatment :Prograti
::Facility/:Permit Status :
Facility .
Goun
City of Dunn/ Black River WWTP
P.O. Box 1065, Dunn, North Carolina, 28335
Susan Tart Road, Dunn, NC 28335
3.75 MGD
98% Domestic
NO
Renewal
4
Harnett
2002
Receivuzg Stream
Stream .Classification
303(d) :Listed?:
Subbasiu.
MxscefIat1.E'.'.ous ><
Cape Fear River
WS-V
NO
03-06-13
Drainage Area: (mil)
Summer 7Q 10 (cfs)
Winter: 7Q 10. (ifs)
3464
586.6
NA
Average Flow
3:7510
3601
1%
Regional Ofl-ice
USGS Topo Quad::;
Permit Writer .
Fayetteville
F24SW
Tom Belnick
F i!GF/ F fF xf�iFj,.+:Y'',fl%Fi
FF�F F Frii{�
* jy'
F Ffr/F /f�
Conditions Incorporated into Draft Permit Renewal
o`p+
Update chronic toxicity test
language.
.amet+ers Mreeted<
Effluent- Toxicity Test
dxt orris
The revised WET
Enforcement Policy became
effective 7/1/99, and
requires different followup
procedures upon test failure.
Continue to waive instream
monitoring requirement as
long as facility maintains
membership in the Middle
Cape Fear River Basin Assoc.
Instream Monitoring
Under signed MOA, instream
monitoring will be performed
by MCFRBA.
Change the permit expiration
date to 9/30/06.
Permit Expiration date
Per Cape Fear basin renewal
schedule.
f
o(le 1 i krM ien t��v-sv art�lkc.hvt fe co1��Akt►i
ti N oc--) o �� �y r PROJECT NOTES .
�' j�j. .}lr)hl �;1, h%, �ud
Summary 4 h I s1/4 ,14147vt I- 6
■ The City of Dunn is requesting a major permit renewal foYa 3.75 MGD extended aeration
municipal wastewater treatment facility serving a population of 9,931. Per the renewal
application, there have been no changes in the operation of the treatment plant since the
permit was last renewed, and no planned upgrades or expansions are anticipated during
the next 5 years. The facility discharge has been averaging 2.1 MGD, which represents
56% of design flow. The current discharge is primarily treated domestic wastewater, with
daily industrial flow < 0.05 MGD (< 2.4% of actual flow). There is no pretreatment
program requirement at this time. Residuals are land applied under permit WQ0006101.
Fact Sheet- NPDES Renewal
City of Dunn; NC0043176
Pacer 1

■ This facility discharges to the Cape Fear River. Although the city is located within
subbasin 030618, the discharge is piped to the Cape Fear River in subbasin 030613. The
receiving stream segment is classified as water supply (WS-V), with the City of Fayetteville
water intake located approximately 20 miles downstream. The receiving segment is not
listed as impaired on the state's 303(d) listing. However, there are some water quality
concerns in the middle segment of the Cape Fear River. A field calibrated QUAL2E model
developed by DWQ during the first basinwide planning cycle indicated that assimilative
capacity for oxygen -consuming wastes had been reached in the segment of the Cape Fear
River from Erwin to Lock and Dam #3. It was recommended that any expanding
municipal discharge >1 MGD be given limits of BOD5= 5 mg/1 and NH3-N = 1 mg/1. The
QUAL2E model is currently being reviewed to determine if improvements in the calibration
can be made.
Permit Development
• Historical. A permit modification issued on 8/18/00 extended the permit expiration date
to 9/30/01 based on basin alignment. Streamflow is regulated at Jordon Lake Dam at a
s7Q10 flow= 586.6 cfs. At a WWTP design flow of 3.75 MGD, the discharge represents
only a 1% instream waste concentration during summer low flow conditions. Quarterly
metals monitoring was dropped in the 1996 permit renewal based on wastewater
composition (primarily domestic with no SIUs), lack of previous metals detection, large
instream dilution (IWC= 1%), and quarterly chronic toxicity testing requirement.
• Renewal Application. The permit renewal application (NC Standard Form A; permitted flow
> 1 MGD) was dated 3/27/01 and received on 4/2/01.
■ Instream Monitoring. The facility maintains membership in the Middle Cape Fear River
Basin Association (MCFRBA), which conducts comprehensive instream monitoring under
an MOA with the Division. Hence, instream monitoring for this facility has been waived
since 9/1/98, for as long as the facility maintains MCFRBA membership.
• Permit Limits. No changes proposed from last permit.
■ Water Quality Limited Parameters: BOD, NH3, TRC
DMR Data Review
• Effluent Chemical/Physical Data. For the calendar period 7/00-6/01, the facility was
compliant with monthly average limits. Monthly average values ranged as follows: flow
(1.6-2.g MGD); BOD (2-11 mg/1); NH3-N (<0.1-1.9 mg/1); TSS (5-20 mg/1); Fecal (1-11
org/100m1); TN (1-6 mg/1); TP (0.5-1.7 mg/1).
• Effluent Toxicity Data. Data does not indicate a chronic toxicity problem. The facility has
passed 16 of 17 quarterly chronic toxicity tests between 1998-2001, at an instream waste
concentration of 1 %.
■ Instream Data. This data is collected by the MCFRBA monitoring coalition. The current
monitoring configuration includes an upstream station at NC217 (B6840000, located
downstream of Erwin and upstream of Dunn). The closest downstream station (B7480000
at Hoffer plant intake) is located >10 miles downstream of the outfall. Instream data for
these stations collected during Summer 20000 reports the lowest instream DO at 6.4
mg/1, well above the instream standard of 5.0 mg/1.
• Compliance Data. The facility reported several pH violations for the period 7/99-6/00,
and pH control equipment (soda ash feed) was installed to correct the problem. For
calendar year 2000, the facility reported 5 overflows totaling 2.1 MG. The facility noted
that inflow and infiltration work is continuing, with $125,000 budgeted for sewer system
repairs.
Fayetteville Regional Data
• The FRO conducted a Compliance Evaluation Inspection of the facility on 5/11/01. The
facility received Satisfactory ratings for all program components, including operation and
maintenance.
• The FRO submitted a staff report dated 5/23/01. The FRO recommends permit renewal
consistent with the basin plan.
Fact Sheet- NPDES Renewal
City of Dunn; NC0043176

Proposed Schedule for Permit Issuance:
Draft Permit to Public Notice: March 13, 2002
Permit Scheduled to Issue: April 26, 2002
State Contact:
If you have any questions on any of the above information or on the attached permit, please
contact Tom Belnick at [phone] ext. 543.
Regional Office Comment:
NAME: " -)C /y 0 . DATE: 3 -- ‘6 2
REGIONAL STAFF REVIEWER
NAME: , • �� = " DATE: . • r - Z
REGIONAL SUPERVISOR
Fact Sheet- NPDES Renewal
City of Dunn; NC0043176

! ay • .3. 2002 4:14PM
A,Ffildav
Apr 2 09:52 2002 User: Nicole George; Title:
STATE OF NORTH CAROLINA
COUNTY OF BARNETT
_n the chatter of:
Ref ad *; 71346 WASTEWATER PERMIT
_ PUBLICtN0.8396 P. 2
STATE OF NORTH CAROLINA
ENVIRONMENTAL ONMENTAL MANAOEMENT COMMISSION/NPDES UN,...
1617 MAIL SERVICE CENTER ""I
4 g 5 RALEIGH, NC 2769B-1617
-NOTIFICATION OF INTENT TO ISSUENPDES WASTEWATER PERMIT)
•
On the basis of thorough staff review and application of NC General Statute
143.21 Public law 92.500 and other lawful standards and regulations, tho
North Carolina Environmental Management Commission proposes to issue
a National Pollutant Discharge Elimination System (NPDES) wastewater
discharge permit to the person(S) listed below effective 45 days from the publish date of this notice.
I, Suzanne Lee, being duly sworn, say: that I am
cLA55IrIED ADVERTISING CLERK of THE DAILY RECORD,
a newspaper published at Dunn, Harnett County, Noxt
and that the attached clipping is a copy of the Not
Published said ncwcpapar fcr 1 days, as follows!
04/01/2002
as required by law in the above entitled suit.
This newspaper is qualified for legal advertising
in accordance with G.S. 1-597 and 1-598-
Classified A;d'erti
Subscribed and sworn to before me,
this 1st day of April, 2002
NPDES Permit Number N00043176, DUNN, CITY, WWTP, P.O. BOX 1085, I
DUNN, NC 28334 has applied for a permit renewal for a facility located in
Harnett County diScharging wastewater into CAPE FEAR RIVER in the I
Cape Fear River Basin. Currently BOO, NH3 AND TRC are water quality
limited. This discharge may affect future allocations in this portion of the I
receiving stream.
Written comments regarding the proposed permit will be accepted until 30
days atter the publisn date of this notice. All comments received prior to that
date are considered In the final determinations regarding the proposed I
permit. The Director of the NC Division of Water Quality may decide to hold a public mooting for the proposed permit should the DIvtston'receive a signif-
icant degree of public interest.
Copies of the draft permit and other supporting Information on file used to
determine conditions present in the draft permit are available upon request
and payment of the costs of reproduction. Mail comments and/or requests
for information to the NC Division of Water Quality at the above address nr
cafe Ms. Christie Jackson at [phone], extension 538. Please include
the NPDES permit number (attached) in any communication. Interested
persons may also visit the Division of Water Quality at 512 N. Salisbury
Strout, Raleigh, NC 278043-1140 between the hours of 8:00 a.m. and 5:00
p.m. to review information on file.
4/1, 2002'
Notary Public
MY COMMISSION EXPIRES JULY 21, 2002
My commission expires

2 comments on NC0043176, City of Dunn/Black River WWTP
EVA ay?
Subject: 2 comments on NC0043176, City of Dunn/Black River WWTP
Date: Fri, 05 Apr 2002 12:07:22 -0500
From: [e-mail]
To: [e-mail]
CC: [e-mail]
Part A.1:
for BOD5 and TSS, shouldn't the sample location specify both I and E,
rather than just E?
re the weekly avg for ammonia, I just heard that we have a resolution.
Apparently, you (NC) will send us a letter confirming that and we'll
send a letter back oking it. So, this permit should be able to be l•
issued soon.
1 of 1 4/5/02 3:23 PM

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
William G. Ross Jr., Secretary
Gregory J. Thorpe, Ph.D., Acting Director
MEMORANDUM
To:
From:
March 6, 2002
Debra Benoy
NC DENR / DEH / Regional Engineer
Fayetteville Regional Office
Tom Belnick
NPDES Unit
Subject: Review of NPDES Permit NC0043176
City of Dunn WWTP
kVA
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
ItEOWR
I APR 1 5 �nm 5 2002
DENR - WATER QUALITY
POINT SOURCE BRANCH
Please indicate below your agency's position or viewpoint on the proposed permit renewal and return
this form by APRIL 13, 2002. If you have any questions on the proposed modification, please contact
me at the telephone number or e-mail address listed at the bottom of this page.
RESPONSE: (Check one)
Concur with the issuance of this permit provided the facility is operated and maintained
properly, the stated effluent limits are met prior to discharge, and the discharge does not
contravene the designated water quality standards.
Concurs with issuance of the above permit, provided the following conditions are met:
Opposes the issuance of the above permit, based on reasons stated below, or attached:
Signed Cf r Date: j ! I ► (02
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 919 733-5083, extension 543 (fax) 919 733-0719
VISIT US ON THE INTERNET @ http://h2o.enr.state.nc.us/NPDES tom.belnick@ ncmail.net

Whole Effluent Toxicity Testing Self -Monitoring Summary February 21, 2002
FACILITY REQUIREMENT YEAR SAN FEB MAR APR MAY JUN JUL AUG SEP UCI NO\ DFc
Duke Power -McGuire 001 Perm 24hr p/f ac tin: 90% (Cello) 1998 — Pass — — Pass Pass — Pass
NC0024392/001 Begin:10/1/2000 Frequency: Q + Feb May Aug Nov + NonComp:Single 1999 -- Pass — — Pass Pass — Pass
County. Mecklenburg Region: MRO Subbasin: CTB32 2000 — Pass — — Pass -- Pass — Pass
PF: NA Special 2001 — Pau — — Pass -- Pass -- Pass
7Q10: 80 IWC(%)90 Order: 2002
Duke Power -McGuire 002 Penn 48hr LC50 ac lim: 64% (Grab) 1998 — >100 — — >100 — >100 — — >100
NC0024392/002 Begin:10/1/2000 Frequency: Q + Feb May Aug Nov + NonComp:Single 1999 — >100 — -- >100 -- -- >100 — >100
County. Mecklenburg Region: MRO Subbasin: CTB33 2000 — >100 — >100 --- -- >100 -- >100
PF: 0.3315 Special 2001 — >100 — >100 -- --- >100 >100
7Q10: 80.0 IWC(%):0.64 Order: 2002
Duke Power -McGuire 005 Perm chr lim: 1.4%(Grab)
NC0024392/005 Begin:10/1/2000 Frequency: Q Jan Apr Jul Oct
County Mecklenburg Region: MRO Subbasin: CTB33
PF: 0,754 Special
7Q10: 80.0 1WC(%):1.4 ord1:
+ NonComp:Single
1998 Pass — — Pass — — Pass — — Pass
1999 Pass — — Pass — Pass — Pass
2000 Pass — — Ell — --- Late Pass -- Pass
2001 Pass — — Pass — — Late Pass Pass
2002
Duke Power -River Bend 002 Penn chr lim: 10% (Grab) Y 1998 Pass — Pass -- Pass --- Pass
NC0004961/002 Begin:9/1/I996 Frequency: Q P/F + Jan Apr Jul Oct NonComp:Single 1999 Pass — — Pass -- Pass -- Pass
County. Gaston Region: MRO Subbasin CTB33 2000 Pass — — 01 --- Late Pass Pass
PF: NA Special 2001 pass -- Pass --- Late Pass -- Pass
7010: 80.0 IWC(%):10.36 Order 2002 Late
Dunn/Blackriver WWTP Penn chr lim: I% 1998 — Fal,Pass -- — Pass -- Pass -- Pass
NC0043176/001 Begin:9/1/I996 Frequency: Q P/F + Mar Jun Sep Dee NonComp:Single 1999 --- -- Pass -- — Pass -- — Pass -- — Pass
County. Harnett Region: FRO Subbasin: CPFI3 2000 — — Pass -- — Pass — -- Pass -- Pass
PF: 3.75 Special 2001 — — Pass _- -- Pass — -- Pass -- Pass
7Q10: 586.6 IWC(%):1.0 Order: 2002
Dupont De Nemours Penn chr lim: 3.3% 1998 — Pass — Pass -- — Pass — Pass
NC0003573/001 Begin:9/1/1996 Frequency:QP/F + Feb May Aug Nov NonComp:Single 1999 — Pass — Late Pass --- Pass -- — Pass
County. Bladen Region: FRO Subbasin: CPFI6 2000 — Late Pass -- Pass — -- Pass — — Pass
PF: 17 Special 2001 — Pass Pass.Pass -- Pass Pass -- — Pass
7Q10: 791.0 IWC(%)3.3 Order: 2002
Durham Co. -Triangle WWTP Perm chr lim: 90%
NC8026051/001 Begin:4/1/1996 Frequency: Q P/F + Feb May Aug Nov
County. Durham Region: RRO Subbasin: CPF05
PF: 6.0 Sp,sial
7Q10: 0.0 IWC(%):100 Order:
NonComp:Single
Y 1998 -- Pass -- -- Passslg — Pass -- — Pass
1999 -- Pass — -- Pass - -- Pass — NRIPass
2000 -- NR/Pass -- -- BI — Pass Pass -- — Pass
2001 -. Pass .-- -- Pass — -- Pass -- _- Pass
2002
Durham-Northside WWTP Penn chr lim: 90%
NC0023841/001 Begin11/1/2000 Frequency.Q Jan Apr Jul Oct
County. Durham Region: RRO Subbasin: NEU01
PF: 20.0 Special
7Q 10: 0.075 IWC(%)99.5 Order:
+ NonComp:Single
Y 1998 Pass — -- Pass — — Pass — Pass
1999 Pass — — Pass — Pass — -- Pass
2000 Pass — — Pass — — Pass — — Pass
2001 Pass — — Pass — -- Pass -- — Pass
2002
E. 1. Dupont De Nemours/Kinston Fat. PERM CHR LIM: 1.9% 1998 Pass — — Pass — — Pass. .- Pass
NC0003760/001 Begin7/1/1994 Frequency: Q P/F + Jan Apr Jul Oct NonComp: SINGLE 1999 Pass — — Pass -- Pass — Pass
County. Lenoir Region: WARO Subbasin: NEU05 2000 Pass — -- Pass -- Pass -- — Pass
PF: 3.6 Special 2001 Pass — — Pass — Pass -- -- Pau
7010: 283.1 IWC(%):1.9 Order: 2002 late
Easco Aluminum Perm chr lim: 2.4% (Grab)
NC0086231/001 Begin:10/1/1998 Frequency. Q P/F + Mar Jun Sep Dee
County: Hertford Region: WARO Subbasin: CHO01
PF: 0.024 Special
7Q10: 3.0 I W C(%):2.4 Order:
+ NonComp:Single
1998 _. .- _- _. _. N -- — N
1999 — — Pass — Late Pass -- Late Pass — NR
2000 NR/Pass — Pass — — Pass — — Pass — — Pass
2001 — ._ Pass — — Pass — — NR/Pass — -- NR
2002
Eaton Corp/001 Perm chr lim: 90% 1998
NC0003379/001 Begrin5/1/2000 Frequency: Q P/F Jan AprJul Oct + NonComp:Single 1999
County: Person Region: RRO Subbasin NEU01 2000
PF: Special 2001
7Q10: 0.0 IWC(%):100.0 Order: 2002
Y Pre 1998 Data Available
LEGEND:
PERM = Permit Requiremem LET = Administrative Letter - Target Frequency = Monitoring frequency: Q- Quarterly; M. Monthly; BM- Bimonthly; SA- Semiarmually; A- Annually; OWD- Only when discharging; D- Discontinued monitoring requirement
Begin = First month required 7Q10 = Receiving stream low flow criterion (cfs) + = quarterly monitoring increases to monthly upon failure or NR Months that testing must occur - ex. Jan, Apr. Jul, Oct NonComp = Current Compliance Requirement
PF = Permitted now (MGD) I WC/s = Instream waste concentration P/F = Pass/Fail lest AC = Acute CHR = Chronic
Data Notation: f- Fathead Minnow; • - Ceriodaphnia sp.; my - Mysid shrimp; ChV - Chronic value; P - Mortality of stated percentage at highest concentration; at - Perfomied by DWQ Aquatic Tox Unit; bt - Bad test
Reporting Notation: -- = Data not required; NR - Not reported Facility Activity Status: 1 - Inactive, N - Newly Issued(fo construct): H - Active but not discharging; t-More data available for month in question; • = ORC signature needed
17

DMR Review:
Facility:
NC00
Preparer:
Date:
EFFLUENT-001
City of Dunn
43176
Tom Belnick
2/26/02
Month
Eff
AvgQ
MGD
Eff
MaxTRC
ug/I
Eff
AvgBOD
mg/I
Eff
AvgNH3
mg/I
Eff
AvgTSS
mg/I
Eff
AvgFecal
#/100m1
Eff
MinDO
mg/I
Eff
TN
mg/I
Eff
TP
mg/I
JuI-00
2.1
<20
2.3
<0.1
5
1
6.3
6
1.7
Aug-00
2.4
20
2.3
0.1
5
6.4
5
0.5
Sep-00
2.5
20
3.2
<0.1
6
2
6.4
2.8
1.1
Oct-00
1.9
20
2.7
0.22
7
2
6.9
3.6
1.1
Nov-00
1.6
20
3
0.56
7
1
6.5
2.2
0.8
Dec-00
1.6
20
2.9
0.35
5
1
6.7
2.8
1.1
Jan-01
1.6
20
3.7
0.5
8
3
7.2
5.7
1.4
Feb-01
1.8
20
7.9
1.3
16
4
7.6
3.9
0.4
Mar-01
2.4
20
11
1.9
20
11
6.4
1.1
0.7
Apr-01
1.9
20
7.4
1.1
15
3
7.4
4.7
1.3
May-01
1.5
20
3.5
0.4
7
1
7.9
2.8
1.7
Jun-01
2.6
20
9
1.8
15
10
8
3.9
0.6
3.8
CurrentLimits: S
28
12
2
30
200
>5
NL
NL
CurrentLimits: W
3.8
28
24.0
4
30
200
>5
NL
NL

dissolved oxygen
Station ID
DATE
DEPTH (meters
TEMP (deg C)
DO-FIELD(mg/I
B6840000
9/8/99 0.1
24.5 7.8
B6840000
10/12/99 0.1
20.1 7.8
B6840000
12/9/99 0.1
9.7 110.5
B6840000
1/10/00 0.1
11.7 10.82
B6840000
2/14/00 0.1
7.75 11.62
B6840000
5/2/00 0.1
16.8
8.65
8.09
B6840000
5/11 /00
0.1
26.8
B6840000
6/20/00
0.1
28.6 6.47
B6840000
6/1 /00
0.1
23.1
7.78
B6840000
8/21 /00
0.1
27
8.09
B6840000
8/16/00
0.1
28.8 '
7.08
B6840000
8/21 /00
0.1
27
8.09
B6840000
7/24/00
0.1
26.7
7.19
B6840000
7/11 /00
0.1
29.5
6.59
B6840000
8/16/00
0.1
28.8
7.08
B6840000
3/17/00
0.1
14.9 10.41
B6840000
9/25/000.1
25.5
6.93
7.77
8.86
B6840000
9/14/00
0.1
_
27
B6840000 4/21/000.1
17.43
Page 1

dissolved oxygen
jilidreem gele,
2/28/02
Station ID
DATE
DEPTH (meter.
TEMP (deg C)
DO-FIELD(mg/I
B7480000 9/10/99 0.1 24.1 8.5
B7480000 10/11 /99
0.1
0.1
0.1
21.1 7.9
B7480000
11 /9/99
13.6 9.7
B7480000
12/6/99
6.5
11.7
6.6
24.7
110.1
10.83
11.6
B7480000
1 /13/00 0.1
B7480000
2/10/00 0.1
B7480000
5/11/00 0.1
i6.8
B7480000
5/3/00
0.1 17.9 8.3
B7480000
6/21 /00
0.1 28.8 6.87
B7480000
6/2/00
0.1
25.2 8.54
B7480000
8/24/00
0.1
26.7 8.37
B7480000
8/16/00
0.1
27.7 6.49
B7480000
7/26/00
0.1
24.6 6.71
B7480000
7/12/00
0.1
28.6 8.44
B7480000
8/24/00
0.1
26.7 8.37
8/16/0013.1
-
27.7 6 49
B-480ann
B7480000
3/15/00
0.1
13.39
10.84
B7480000
4/25/00
0.1
17.5
9.23
B7480000
9/26/00
0.1 _23.7
9.45
B7480000
9/15/00
0.1
26.4
6.52
ot\k, dit°1'
0,11‘A
Page 1

DIVISION OF WATER QUALITY
May 23, 2001
MEMORANDUM
TO: Tom Belnick
NPDES Permits and and Engineering Unit
FROM: Paul Rawls
Water Quality eg ervisor
Fayetteville Re io 1 ffice
•
FROM: Belinda S. Henson
Environmental Chemist
Fayetteville Regional Office
SUBJECT: NPDES Permit Renewal for Major Facility
NPDES Permit No. NC0043176
City of Dunn, Black River Wastewater Treatment Plant
Harnett County
Please find enclosed the staff report and recommendations of the Fayetteville Regional Office
concerning the renewal of subject new NPDES Permit.
If you have any questions or require further information, please advise.
BSH/bs
cc: Kitty Kramer
Central Files
Enclosure

SOC PRIORITY PROJECT: YES NO X
If Yes, SOC No.
To: NPDES Permits and Engineering Unit
Water Quality Section
Attention: Tom Belnick
Date: May 23. 2001
NPDES STAFF REPORT AND RECOMMENDATION
COUNTY: Harnett
Permit No. NC 0043176
PART I - GENERAL INFORMATION
1. Facility and Address: City of Dunn, Black River Wastewater Treatment Facility
P.O. Box 1065
Dunn, North Carolina 28335
2. Date of Investigation: May 11, 2001
3. Report Prepared by: Belinda S. Henson, Environmental Chemist
Fayetteville Regional Office
4. Persons Contacted and Telephone Number: Mr. Bobby Burnett, ORC
910-892-2935
5. Directions to Site: This waste treatment facility is located at the end of a dirt drive off the
south side of SR 1844 (Susan Tart Road), opposite Dunn Memorial.
6. Discharge Point(s). List for all discharge points:
Latitude: 35° 17' 31" Longitude: 78° 41' 09"
Attach a USGS map extract and indicate treatment facility site and discharge point on map:
USGS Quad No.: F 24 SW USGS Quad Name: Erwin. NC
7. Site size and expansion area consistent with application?
X Yes No (If No, explain)
8. Topography (relationship to 100-year flood plain included): Basically flat with some gently
sloping areas.
9. Location of nearest dwelling: Approximately 500 feet from entrance gate. From
review of FRO records, odor complaints or other
nuisance conditions related to the facility have not been
noted.

PART I - GENERAL INFORMATION (continued):
10. Receiving stream or affected surface waters: Cape Fear River
a. Stream / Classification: WS-V
b. River Basin and Subbasin No.: Cape Fear River 03-06-13
c. Describe receiving stream features and pertinent downstream uses:
The main stem of the Cape Fear River at this point is used primarily for
fish and wildlife propagation, fishing and boating. The City of
Fayetteville has a water intake approximately 20 miles downstream.
Access to this stretch of river is limited.
PART II - DESCRIPTION OF WASTES AND TREATMENT WORKS
1. a. Volume of wastewater to be permitted: 3.75 MGD (Ultimate Design
Capacity)
b. What is the current permitted capacity of the wastewater treatment facility? 3.75 MGD
c. Actual treatment capacity of the current facility (current design capacity. 3.75 MGD
d. Date(s) and construction activities allowed by previous Authorization to Construct
issued in the previous two (2) years. N/A
e. Please provide a description of existing or substantially constructed wastewater
treatment facilities.
The existing WWTP includes: three (3) influent screw pumps rated at
1.75 MGD each and one (1) suction lift pump rated at 5.25 MGD, a
mechanical bar screen 2' - 6' width channel, an aerated grit removal and
250 GPM girt washer, influent flow meter - 12" throat parshall flume
with pressure transducer, followed by a flow divider box which feeds a
coarse bubble activated sludge aeration basin with four (4) cells, three
(3) final clarifiers 60' diameter, dual chlorine contact basin - 40 minutes
detention time at 3.75 GPD, dechlorination system, effluent pumps -
three (3) vertical turbine pumps and river cascade discharge. Sludge
handling facilities include aerobic digester - 150,000 gallon capacity,
secondary aerobic digester/sludge holding tank - 500,000 gallon
capacity, a dissolved air flotation (DAF) sludge thickener, and six (6)
gravity sludge drying beds (no longer utilized).
f. Please provide a description of proposed wastewater treatment facilities: N/A
g. Possible toxic impacts to surface water: N/A

PART H - DESCRIPTION OF WASTES AND TREATMENT WORKS (continued)
h. Pretreatment Program (POTWs only):
In development _ Approved
Should be required Not needed X (not at this time)
2. Residuals handling and utilization/disposal scheme:
a. If residuals are being land applied, please specify DWQ Permit No. WQ0006101
Residual Contractor: Agri -South Biosolids Services, Inc.
Telephone No. 910-484-8702
b. Residuals stabilization: PSRP X PFRP_ Other_
c. Landfill: N/A
d. Other disposal/utilization scheme (Specify): N/A
3. Treatment plant classification (attach completed rating sheet): Grade IV
5. SIC Code(s): 4952
Primary 01 Secondary 23
Main Treatment Unit Code: 0 5 0 0 3
PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grants Funds or are any public monies
involved (municipals only)? N/A
2. Special monitoring or limitations (including toxicity) requests:
No special monitoring requested. Monitoring and limitations should be in
keeping with basinwide strategy.
3. Important SOC, JOC or Compliance Schedule dates (please indicate) N/A
Date
Submission of Plans and Specifications None
Begin Construction None
Complete Construction None

PART III - OTHER PERTINENT INFORMATION (continued)
4. Alternative Analysis Evaluation: Has the facility evaluated all of the nondischarge options
available. Please provide regional perspective for each option evaluated.
Spray Irrigation: Not practical.
Connection to Regional Sewer System: None available.
Subsurface: Not practical.
Other disposal options: None known.
5. Other Special Items: This facility appears to be well maintained.
PART IV - EVALUATION AND RECOMMENDATIONS
A review of Discharge Monitoring Records (DMRs) revealed the following months with flow
violations and the quanities:
f
ee4 /ool(
March 2001 3 11
October 2000 6 n0 !' /0450,/
September 2000 5
August 2000 3
July 2000 1
February 2000 13
January 2000 8
October 1999 10
September 1999 13 (Note: month of hurricane)
M64
We recommend that the cover letter to this permit include a comment that asks for a plan of
action to address Inflow/Infiltration within 90 days of issuance of the permit. It is the
recommendation of this office that the subject application be processed in keeping with
basinwide strategy operating at a NPDES permit limit of 3.75 MGD.
Water Quality Regional Supervisor
Date

NC0043176; City of Dunr.
Aul
Subject: NC0043176; City of Dunn
Date: Thu, 28 Feb 2002 13:17:52 -0500
From: Tom Belnick <[e-mail]>
To: Belinda Henson <Belinda.Henson @ ncmail.net>
Hi Belinda- please check out the attached Fact Sheet and let me know if
the Region is ok with it. There are only very minor changes to this
permit (e.g., update expiration date, update toxicity test language).
All limits and monitoring frequencies remain the same. In your staff
report dated 5/23/01 you recommended that we put in language requesting
a plan of action for I&I to be submitted within 90 days- please add more
specifics as to what you would expect them to submit. I have not added
this yet for a few reasons. The flow limit is a monthly average, which
they have been compliant with, and they are currently well below the
design flow (currently averaging about 56% of design flow). We have
generally requested I&I studies when a facility is requesting an
expansion, and we want to ensure that they need the additional capacity
to meet new flow and not for I&I problems. The facility has also
reported that I&I work is continuing, with $125,000 budgeted for sewer
system repairs. If possible, I'd like to notice this for next Wednesday
(March 6), so let me know what you think. Thanks.
Mailto:[e-mail]
N.0 DENR-DWQ/NPDES Unit
1617 Mail Service Center, Raleigh NC 27699-1617
Work: [phone] ext. 543
Fax: [phone]
n43176 fact sheet 2002.doc
Name: 43176 fact sheet 2002.doc
Type: Microsoft Word Document (application/msword)
Encoding: base64
1 of 1 2/28/02 1:18 PM

frip'h(4170.1
CITY OF DUNN
POST OFFICE BOX 1065 • DUNN • NORTH CAROLINA 28335 • [phone]
Mayor
Abraham Oudeh
Mayor Pro Tem
Michael H. Womble
Councilmembers
George Robinson
Carolyn P. McDougal
Paul Bass
Toby Sumner
Joey Tart
Ms. Valery Stephens
DENR-Water Quality Section
Point Spruce Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
Dear Ms. Stephens:
March 27, 2001
ECEOVEB
AK( 2 2001
DENR-WATER DUALITY
POINT SOURCE BRANCH
Re: Renewal of NPDES Permit No. NC0043176
City Manager
Carl G. Dean
The City of Dunn hereby request the renewal of our NPDES permit for the Black River Wastewater
Treatment Facility. The following information is being presented in regards to the requested NPDES
permit renewal:
• One signed original and two copies of NPDES Permit Renewal Application Standard Form
A.
• A narrative description of the wastewater treatment components, a schematic flow
diagram, and a location map is included with each copy of the application form.
There have been no changes in our operation at the wastewater plan since the permit was last
renewed and no planned upgrades or expansions are anticipated during the next five years.
If you have any questions, please call me at [phone].
Sinc-rely yours,
sep .Campbell
Public Utilities Director
/1 4, /44' 7r/
v

/us."3/dIm2ld/ElBO3/TJ!AIMENT
PLANT
INFLUENT
INFLUENT
SCREW
PUMPS
WASTEWATER TREATMENT
BIOSOLIOS PROCESSING
SLUDGE
DRYING
BErs
I
GRIT
1111 REMOVAL
•
INFLUENT
METERING
n
♦
•
BLOWERS
R
---SUPERNATE RETURN
DISSOLVED
AIR FLOATATION
THICKENING
--41---SLUDGE RECIRCULATION
COARSE
BURBLE
ACTIVATED
SLUDGE
SLUDGE RECIR.
PUMP STATION
PROCESSING FLOW SCHEMATIC
NOT TO SCALE
AIR
DIGESTION
IFICATION
SLUDGE
HOLDING .
MIXING
TANK
IFICATI
TRUCK.LOADING
PUMP ST TION
EFFLUENT I
PUMPING s�
STATION
EFFLUENT
METERING
I 41
ORINE
FEED
I I
MCONTACT LORING
EFMMW
CASCADE
i
CAPE FEAR RIVER

CITY OF DUNN, NORTH CAROLINA
WASTEWATER TREATMENT FACILITY
NARRATIVE DESCRIPTION
The City of Dunn Blackriver Wastewater Treatment Facility has a permitted capacity of 3.75
MGD. The treatment plant components include: influent pumping, mechanical bar screen, aerated
grit removal, influent metering, coarse bubble activated sludge aeration, final clarification, chlorine
contact, dechlorination, effluent pumping, effluent metering, and river cascade discharge. Sludge
handling facilities include: a sludge recirculation sludge wasting pump station, a dissolved air
floatation sludge thickener, an aerobic digester, a secondary aerobic digester/sludge holding tank,
sludge drying beds, and a sludge truck loading station. Details of the major components of the
WWTP are as follows:
• Influent pumps - 3 screw pumps rated at 1.75 MGD each and one suction lift pump rated
at 5.25 MGD.
• Mechanical Bar Screen - 2'-6' width channel.
• Aerated grit removal -12' x 12' x 12' SWD chamber and 250 GPM grit washer.
• Influent metering -12" throat parshall flume with pressure transducer.
• Aeration Basin - 4 cells 200' x 28' x 14' SWD each. 15 hours detention time at 3.75 MGD.
• Final clarifiers - Three 60' diameter by 10' SWD with combined overflow rate of 442
GPD/SF at 3.75
• Chlorine contact basin - 40 minutes detention time at 3.75 MGD.
• Effluent pumps - 3 vertical turbine pumps. One pump rated at 6.5 MGD. Two pumps
running yield 7.5 MGD capacity.
As wastewater solids concentrations rise in the aeration basin a small portion of the sludge
recirculation flow, or approximately 150 GPM is routed to the sludge handling facilities. Details of the
major components of the sludge handling facilities are as follows:

• Small high rate dissolved air floatation thickener which quickly thickens the waste sludge
from 1 % to 5% solids.
• Aerobic digester-150,000 gallon capacity.
• Secondary aerobic digester/sludge holding tank — 500,000 gallon capacity.
• Sludge drying beds six at 1,600 s.f. each
• Truck loading pump station — Duplex high capacity pumps to quickly Toad digested
sludge for ultimate disposal by liquid land application on properly permitted farm lands.

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr.. Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
August 18, 2000
Mr. Carl Dean
City of Dunn
P.O. Box 1065
Dunn, NC 28334
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: NPDES Permit Modification
Permit NC0043176
Dunn WWTP
Harnett County
Dear Mr. Dean:
The Division is beginning the cycle of permit renewals for the Cape Fear river basin. An examination of the Cape
Fear basin plan and the NPDES permit schedule has revealed that the existing expiration dates in Cape Fear NPDES
permits do not coincide with the revised permit expiration dates for the basin. This discrepancy could create unnecessary
delays in the processing of over 200 permit renewals. Accordingly, the Division is changing the permit expiration dates for
NPDES permits in the Cape Fear river basin.
This permit modification changes the expiration date of the subject permit in subbasin 30613 to September 30, 2001.
Please find enclosed the revised permit cover page. Insert the new cover page into your permit and discard the old page.
All other terms and conditions contained in the original permit remain unchanged and in full effect. This permit
modification is issued under the requirements of North Carolina General Statutes 143-215.1 and the Memorandum of
Agreement between North Carolina and the U. S. Environmental Protection Agency.
In accordance with the modification of the permit expiration date, the new due date for your renewal application is
April 3, 2001. Renewal application forms will be sent to you approximately 6-8 weeks in advance of the new due date or
you may download the forms from the NPDES web site at http://h2o.enr.state.nc.us/NPDES/documents.html. You
will need to download Standard Form A. If you have already submitted a permit renewal form, there is no need to
submit any other forms to the Division; the application will be processed during the renewal period for your subbasin.
If any part of this permit modification are unacceptable to you, you have the right to an adjudicatory hearing upon
written request within thirty (30) days following receipt of this letter. This request must be a written petition conforming
to Chapter 150B of the North Carolina General Statutes, filed with the Office of Administrative Hearings (6714 Mail
Service Center, Raleigh, North Carolina 27699-6714). Unless such demand is made, this decision shall be final and binding.
If you have any questions concerning this permit modification, please contact Natalie Sierra at [phone],
extension 551.
cc: Central Files
Fayetteville Regional Office, Water Quality Section
Point Source Compliance Enforcement Unit
NPDES Unit
Sincerely,
Asyri--14)-16v},--
Kerr T. Stevens
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
An Equal Opportunity Affirmative Action Employer
Telephone [phone] FAX [phone]
VISIT US ON THE INTERNET @ http://h2o.enr.state.nc.us/NPDES

Permit NC0043176
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 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,
City of Dunn
is hereby authorized to discharge wastewater from a facility located at the
Dunn WWTP
Susan Tart Road
Dunn
Harnett County
to receiving waters designated as the Cape Fear River 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.
This permit shall become effective September 1, 2000.
This permit and authorization to discharge shall expire at midnight on September 30,
2001.
Signed this day August 18, 2000.
Kerr T. Stevens, 'rector
Division of Water Quality
By Authority of the Environmental Management Commission