HISTORICAL BEFORE 2000

FACILITY ADDRESS:
PHONE NUMBER:
DIVISION OF WATER QUALITY
FAYETTEVILLE REGIONAL OFFICE
SURVEY OF NPDES PERMITTED FACILITIES
PLEASE RETURN ON OR BEFORE OCTOBER 15,1999
aEr EWE
EP 29 1999
F-AYETTIVILLE
REa OFFICE
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FAX: VD— E 7
1. What method of composite sampling is your facility [ ] a. Continuous
currently utilizing? - - [ ] b. Constant time / variable volume
[ ✓r c. Variable time / constant volume
[ ] d. Constant time / constant volume
Please be aware that constant time / constant volume composting must meet the criteria outlined in
the code.
In addition to the above requested information, please describe your quality control / quality assurance techniques
that are utilized in sampling. Please include the following:
2. What type of sample container is used: plastic, glass or metal for composite sampling?
3. What procedures are used to clean the composite sample container?
.Sow4,7t'tv cvn'?AT so/,+oy 1.4.r19T4 / S'G €uba write bevy 5 /f
13 �'r✓s c 7 h o jfo o �h � y .4.2;T T,l/' wit 7-6-4, P o //a
,6, y Se ,q V-? R if 11341 8- is r,T'/' 4i-e I tvi' Z e d i ,4 75e f
4. What cleaning agents are used in the cleaning of the composite sample container?
Ci tY A (4)AS-hi />'Y - d -e r 1rr c 4
ThiP w�Te49
e / p ,,' .11/4 ref?
5. How often is the composite sampler tubing cleaned and / or replaced?
/P o11/Th /
6. What type of sampling device is used for grab sampling?
P II S T i 'C 10 I.
7. Is the grab sampling device kept outside?
yes ia-clo4K4-
Ar6 - e-U1 v-e nt`�

8. How is the grab sampling device cleaned?
,eiPvcs-4 e_d To creiqvb- Th c 5,�,'p/e
wrri 60��'y '—' if/ h'/d ' r4 7»f
9. What cleaning agents are used in the cleaning of the grab sampling device?
p r S h vr//g Shy'.✓
10. Please describe the effluent sampling point.
Iv %tit F c i P c5 FA % ' '0 ..�
G.7e- /
A few other questions related to what type of process control analyses are performed at your facility are also included
in this survey:
11.' Does your facility analyze the following parameters?
Parameters Analyzed
How Often
Mixed Liquor Suspended Solids
719 i / )/
Food / Mass Ratio
"704/rh /?/
`�f,,,ii 4 / y/
Sludge Age
Settleable Solids
cL / /7
12. Does your facility have Inflow / Infiltration (I/1) problems within the sewer system which flows to the
wastewater treatment facility? [?(] Yes [ ] No
If you answer YES to the above question, would you consider it to be : [ ] Minor
p//L low of cr`ry,,5. cv//�ofl c"- [ ] Moderate
— S y S r� n-7 . N - ] Severe--- — - —
If the I / I problems are moderate or severe, what are the plans or what is being implemented to eliminate
this from your system?
C .644P4 pgk.-L .c� t.A( 4-.< lirf aNt5 cir45 r� p(s3 (Ab1 . 4;ne5
a.0 swsketcti/ar TV ¢ (Pept(s .i-' fut. rep43t.91- Apr r S.
13. Do you have access to the INTERNET at your facility and if so, what is your facility's INTERNET address?
N n, ,c3v j S 19e.pd e,-YT1s add ram. tss r s
Gv,¢ le. ,4/c2/ T - tic , cif
Survey Completed By: E, 6i t,e,%�
Date: 0 51 / ,2 / / 9

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E., Director
Mr. Joseph Campbell
City of Dunn
P.O. Box 1065
Dunn, North Carolina
Dear Mr. Campbell:
28335
fim
ATIC
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
August 27, 1998
Subject Implementation of Middle Cape Fear River Basin Association
NPDES Permit Modification for Instream Sampling
Permit NC0043176 Dunn WWTP
Harnett County
As a participant in the coordinated instream monitoring efforts within the Cape Fear River basin, your facility
entered into an agreement with the North Carolina Department of Environment and Natural Resources (NC
DENR) that provides both parties with an effective environmental monitoring tool. By this letter, NC DENR is
waiving the instream monitoring requirements specified within the subject permit as of September 1, 1998. The
Memorandum of Agreement (MOA) signed by NC DENR and you (or your representative) identifies the revised
stations, parametric coverage and frequency of analysis required for your facility.
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 dated
December 6, 1983 (and as subsequently amended). Should your membership in the MOA be terminated, the
instream monitoring requirements specified in the subject permit will be reinstated. You shall notify the Division
immediately upon termination of membership.
I would like to express my gratitude for the cooperation of all participants in this innovative approach to
environmental monitoring. It is expected that the results of the agreement will effectively contribute to our
understanding of the Cape Fear River Basin ecosystem. We have designated Cathy Tyndall as our primary
contact for issues related to the MOA. She can be reached at [phone].
We also look forward to the advances that this cooperative agreement will provide in our management of the
Cape Fear River Basin. We encourage you to contact us should any questions arise regarding the monitoring
efforts or interpretations of the information collected. We will maintain our own series of monitoring stations in
the basin which (when added to the data collected under this MOA) will greatly expand our knowledge of this
ecosystem. We thank you again for your participation and look forward to a successful monitoring effort.
cc: Central Files
Raleigh Regional Office, Water Quality Section
GINSAInit
Cathy Tyndall, Environmental Sciences Branch
P.O. Box 29535, Raleigh, North Carolina 27626-0535
An Equal Opportunity Affirmative Action Employer
Sincerely,
•
. Preston Howard, Jr P.E.
Telephone [phone] FAX [phone]
50% recycled / 10% post -consumer paper

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
Mr. Carl G. Dean, City Manager
City of Dunn
P.O. Box 1065
Dunn, North Carolina 28335
Dear Mr. Dean:
;51 I ri
EDEHNR
December 20, 1996
Subject: NPDES Permit Modification
Permit No. NC0043176
Black River WWTP
Harnett County
m blip(
The subject permit issued by the Division of Water Quality on July 17, 1996 has been modified
as per your request. The downstream monitoring requirement for outfall 001 is hereby changed to
approximately 1400 feet downstream of the discharge due to the inaccessibility of the river bank
one mile downstream from the discharge.
Enclosed please find the modified effluent monitoring pages for outfall 001. These pages
should be inserted into your permit and the old pages discarded. This permit modification 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
December 6, 1983.
Please take notice that this permit is not transferable. Part II, E.4. addresses the requirements to
be followed in case of change in ownership or control of this discharge. This permit does not
affect the legal requirement to obtain other permits which may be required by the Division of
Environmental Management or permits required by the Division of Land Resources, Coastal Area
Management Act or any other Federal or Local governmental permit that may be required. If you
have any questions concerning this permit, please contact Ms. Mary Cabe at telephone number
[phone], ext. 518.
Attachments
Sincerely,
t,A: Preston Howard, Jr., P.E.
cc: Central Files
Fayetteville Regional Office, Water Quality Section
Permits and Engineering Unit
Facility Assessment Unit
P.O. Box 29535, Raleigh, North Carolina 27626-0535
An Equal Opportunity Affirmative Action Employer
Telephone [phone] FAX [phone]
50% recycled/ 10% post -consumer paper

A. (2). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS WINTER (November 1- March 31)
Permit No. NC0043176
During the period beginning upon the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number 001. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent
Characteristics Discharge Limitations
Flow
BOD, 5-Day, 20°C**
Total Suspended Residue**
Dissolved Oxygen***
NH3 as N
Fecal Coliform (geometric mean)
Total Residual Chlorine
Temperature
Total Phosphorus
Total Nitrogen (NO2 + NO3 + TKN)
Chronic Toxicity****
Conductivity
Monthly. Avg.
3.75 MGD
24.0 mg/I
30.0 mg/I
4.0 mg/I
200.0 /100 ml
Weekly Avg.
36.0 mg/I
45.0 mg/I
400.0 /100 ml
Monitoring. Requirements
Measurement Sample
Daily Max, Frequency Type
Continuous Recording
Daily Composite
Daily Composite
Daily t Grab
Daily Composite
Daily t Grab
28.0 14/1 Daily Grab
Daily t Grab
Monthly Composite
Monthly Composite
Quarterly Composite
Daily t Grab
*Sample
Location
I or E
I, E
I,E
E,U,D
E
E,U,D
E
E,U,D
E
E
E
E,U,D
* Sample locations: E - Effluent, I - Influent, U- Upstream at Highway 217, D - D - Approximately 1400 feet downstream of the discharge.
Instream sampling is required beginning September 1, 1996.
Stream samples shall be collected three times per week during June, July, August, and September and once per week during the remaining
months of the year.
** The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the respective influent value (85%
removal).
*** The daily average dissolved oxygen concentration shall not be less than 5.0 mg/1.
**** Chronic Toxicity (Ceriodaphnia) P/F at 1%; March, June, September, and December, See Part III, Condition F.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and monitoring shall be conducted daily by grab samples.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

A. (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS SUMMER (April 1 - October 31)
Permit No. NC0043176
During, the period beginning upon the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number 001. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics Discharge Limitations
Flow
BOD, 5-Day, 20°C**
Total Suspended Residue**
Dissolved Oxygen***
NH3 as N
Fecal Coliform (geometric mean)
Total Residual Chlorine
Temperature
Total Phosphorus
Total Nitrogen (NO2 +.NO3 + TKN)
Chronic Toxicity****
Conductivity
Monthly. Avg.
3.75 MGD
12.0 mg/I
30.0 mg/I
2.0 mg/I
200.0 /100 ml
Weekly Avg.
18.0 mg/I
45.0 mg/I
400.0 /100 ml
Measurement
Daily Max. Frequency
Continuous
Daily
Daily
Daily t
Daily
Daily t
28.0 µg/I Daily
Daily t
Monthly
Monthly
Quarterly
Daily t
Monitoring Requirements
Sample *Sample
Type Location
Recording I or E
Composite I,E
Composite I,E
Grab E,U,D
Composite E
Grab E,U,D
Grab E
Grab E,U,D
Composite E
Composite E
Composite E
Grab E,U,D
* Sample locations: E - Effluent, I - Influent, U - Upstream at Highway 217, D - Approximately 1400 feet downstream of the discharge.
Instream sampling is required beginning September 1, 1996.
t Instream samples shall be collected three times per week during June, July, August, and September and once per week during the remaining
months of the year.
** The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the respective influent value (85%
removal).
*** The daily average dissolved oxygen concentration shall not be less than 5.0 mg/I.
**** Chronic Toxicity (Ceriodaphnia) P/F at 1%; March, June, September, and December, See Part III, Condition F.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units at the effluent and monitoring shall be conducted daily by grab
samples.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

NPDES DOCUMENT SCANNINO 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:
July 17, 1996
This document is printed on reuse paper - ignore any
content on the rezrerse side

gSate of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
July 17, 1996
Mr. Carl G. Dean, City Manager
City of Dunn
P.O. Box 1065
Dunn, North Carolina 28334
Dear Mr. Dean:
eta
E)EHNR
4
Subject: NPDES Permit Issuance
Black River WWTP
NPDES Permit No. NC0043176
Harnett County
In accordance with your application for a permit received January 29, 1996 we are forwarding
herewith the subject State - NPDES permit. This permit is issued pursuant to the requirements of North
Carolina General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the
US Environmental Protection Agency dated December 6, 1983.
Due to the documented dissolved oxygen problems along the Cape Fear River and the fact that
Dunn is one of the largest municipal dischargers to the freshwater portion of the river, instream monitoring
will be required with this permit. The Division is aware of the difficulties in accessing the river and
encourages the City to work with the Fayetteville Regional Office in finding a feasible point within
approximately one mile of the discharge (preferably upstream of the first rapids). While not always
optimal for instream sampling, in this case, the Division will allow the City to sample from the bank. To
allow the City additional time to find a feasible sampling point, the instream monitoring will not be
required until September 1, 1996.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicative hearing upon written request within thirty (30)
days following receipt of this letter. This request must be in the form of a written petition, conforming to
Chapter 150B of the North Carolina General Statutes, and filed with the Office of Administrative
Hearings, Post Office Drawer 27447, Raleigh, North Carolina 27611 -7447. Unless such demand is
made, this decision shall be final and binding.
Please take notice this permit is not transferable. Part II, E.4. addresses the requirements to be
followed in case of change in ownership or control of this discharge. This permit does not affect the legal
requirements to obtain other permits which may be required by the Division of Water Quality or permits
required by the Division of Land Resources, Coastal Area Management Act or any other Federal or Local
governmental permit that may be required.
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled! 10% post -consumer paper

If you have any questions concerning this permit, please contact Susan Wilson at telephone
number [phone], extension 555.
Sincerely,
Original Signed By
!David A. GGoodrich.
A. Freston owar , Jr., F.E.
cc: Central Files
Fayetteville Regional Office
Mr. Roosevelt Childress, EPA
Permits and Engineering Unit
Facility Assessment Unit
Aquatic Toxicology and Survey Unit

Permit No. NC0043176
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT, HEALTH, AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended,
City of Dunn
is hereby authorized to discharge wastewater from a facility located at
Black River Wastewater Treatment Plant
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.
The permit shall become effective September 1, 1996.
This permit and the authorization to discharge shall expire at midnight on July 31, 2001.
Signed this day July 17, 1996.
I i By
A. Good fh
A. Preston Howard, Jr., P.E., Director
Division of Water Quality
By Authority of the Environmental Mangement Commission

Permit No. NC0043176
SUPPLEMENT TO PERMIT COVER SHEET
City of Dunn
is hereby authorized to:
1. Continue to operate a 3.75 MGD treatment facility consisting of influent screw pumps, suction
lift pump, mechanical bar screen, grit chamber, influent flow measurement, dual aeration basins,
three final clarifiers, DAF sludge unit, aerobic sludge digestor, aerated sludge holding tank, dual
gas chlorinators and sulfonators, dual chlorine contact tanks, three effluent pumps, effluent flow
meters, and optional use sludge drying beds located at Black River Wastewater Treatment Plant,
Susan Tart Road, Dunn, Harnett County (See Part III of this Permit), and
2. Discharge from said treatment works at the location specified on the attached map into Cape Fear
River which is classified Class WS - V waters in the Cape Fear River Basin.

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A. (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS SUMMER (April 1 - October 31) Permit No. NC0043176
During the period beginning upon the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number 001. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics Discharge Limitations Monitoring Requirements
Measurement Sample *Sample
Monthly. Avg. Weekly Avg. Daily Max. Frequency Type Location
Flow 3.75 MGD Continuous Recording I or E
BOD, 5-Day, 20°C** 12.0 mg/I 18.0 mg/I Daily Composite I,E
Total Suspended Residue** 30.0 mg/I 45.0 mg/I Daily Composite I,E
Dissolved Oxygen*** Daily t Grab E,U,D
NH3 as N 2.0 mg/I Daily Composite E
Fecal Coliform (geometric mean) 200.0 /100 ml 400.0 /100 ml Daily t Grab E,U,D
Total Residual Chlorine 28.0 µg/I Daily Grab E
Temperature Daily t Grab E,U,D
Total Phosphorus Monthly Composite E
Total Nitrogen (NO2 + NO3 + TKN) Monthly Composite E
Chronic Toxicity**** Quarterly Composite E
Conductivity Daily t Grab E,U,D
* Sample locations: E - Effluent, I - Influent, U - Upstream at Highway 217, D - At the nearest accessible point within approximately one mile
downstream.
Instream sampling is required beginning September 1, 1996.
t Instream samples shall be collected three times per week during June, July, August, and September and once per week during the remaining
months of the year.
** The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the respective influent value (85
removal).
*** The daily average dissolved oxygen concentration shall not be less than 5.0 mg/l.
****Chronic Toxicity (Ceriodaphnia) P/F at 1 %; March, June, September, December; See Part III, Condition F.
The pH shall not be less than 6.0.standard units nor greater than 9.0 standard units at the effluent and monitoring shall be conducted daily by grab
samples.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

A. (2). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS WINTER (November 1 - March 31) Permit No. NC0043176-
During the period beginning upon the effective date of the permit and lasting until expiration, the Permittee is authorized to discharge from
outfall(s) serial number 001. Such discharges shall be limited and monitored by the permittee as specified below:
Effluent Characteristics Discharge Limitations
Flow
BOD, 5-Day, 20°C**
Total Suspended Residue**
Dissolved Oxygen***
NH3 as N
Fecal Coliform (geometric mean)
Total Residual Chlorine
Temperature
Total Phosphorus
Total Nitrogen (NO2 + NO3 + TKN)
Chronic Toxicity****
Conductivity
Monthly. Avg.
3.75 MGD
24.0 mg/I
30.0 mg/I
4.0 mg/I
200.0 /100 ml
Weekly Avg.
36.0 mg/I
45.0 mg/I
400.0 /100 ml
Monitoring Requirements
Measurement
Daily Max. Frequency
Continuous
Daily
Daily
Daily t
Daily
Daily t
28.0 µg/I Daily
Daily t
Monthly
Monthly
Quarterly
Daily t
Sample *Sample
Type Location
Recording I or E
Composite
Composite
Grab
Composite
Grab
Grab
Grab
Composite
Composite
Composite
Grab
I,E
I,E
E,U,D
E
E,U,D
E
E,U,D
E
E
E
E,U,D
* Sample locations: E - Effluent, I - Influent, U- Upstream at Highway 217, D - At the nearest accessible point within approximately one mile
downstream.
Instream sampling is required beginning September 1, 1996.
t Stream samples shall be collected three times per week during June, July, August, and September and once per week during the remaining
months of the year.
** The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15% of the respective influent value (85 %
removal).
*** The daily average dissolved oxygen concentration shall not be less than 5.0 mg/l.
****Chronic Toxicity (Ceriodaphnia) P/F at 1%; March, June, September, December; See Part III, Condition F.
The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units and monitoring shall be conducted daily by grab samples.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

Staff
NPTh
FA,C1LITy INFORMATLON
Facility Blackriver WWTP
NPDES No. NC0043176
Design Flow (MGD) 3.75 MGD upon expa
Facility Class IV
eview and Evaluation
S Wastewater Permit
ion (essentially completed)
STREAM CHARACTERISTICS
-Stream Name Cape Fear 1.1ver
Stream Class WS-V
Sub -basin 030613
Drainage Area (m12) 3464
S7Q10 (cfs) 586.6
W7Q10 (cfs)
3002 (cfs)
IWC (%) 1.0 (4) 3.75 MGD
Proposed Changes Parameters Affcctcd Basis for change(s)
drop quarterly metals monit, ALE metals and oi. & grease review of existing effluent data
and oil &grease ___ and due t0 no S1U's
Compliance Schedule:
Special Condition($):
Permits Sr Engineering Comments:
e tv aY MQ `v AT
Prepared by: 5,1 .A,,.10 n t^` tip
��
The renewal permit reflects only the 3,75 MGD flow (as per staff report, this flow is near final
completion). Chronic toxicity testing'reflects 1% at 3.75 MGD only. Quarterly metals
moritoring has been dropped based on effluent data (below detect with the exception of Cu and
Zn which were well below allowable state action level). The monitoring has also been
dropped due to the fact that the facility has no pretreatment program and no 5IU's. Oil & this
igrease monitoring appears not to have been conducted. This parameter is being dropped unless t CLL.)
FRO comments otherwise. Oil & grease is not a standard monitoring requirement for o`N,L'1 +-
municipalities and adequate treatment should prevent the facility from exceeding allowable 1-kw- j
levels. No instream monitoring is required eft this facility. There have been several flow ov Ivy
violations in the past year, but the flow expansion should help remedy this situation. ,Leo Fats
Regional Office Evaluation and Recomm4rdativnie
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To: Attention: Susan Wilson
Permits and Engineering Unit
Water Quality Section
SOC PRIORITY PROJECT: Yes No _x_
If yes, SOC No.
March 5, 1996
NPDES STAFF REPORT AND RECOMMENDATIONS
County Harnett
Permit No. NC0043176
PART I. GENERAL INFORMATION
1. Facility and Address: City of Dunn, Black River WWTP
P.O. Box 1065
Dunn, North Carolina 28355
2. Date of Investigation: February 29, 1996
3. Report Prepared By: Ken Averitte, FRO
4. Persons Contacted and Telephone Number: Mr. Victor Quick, Plants Manager
City of Dunn, [phone]
Mr. Bobby Burnette, ORC
[phone]
5. Directions to Site: This waste treatment facility is located at the end
of a dirt drive off the south side of SR 1844, opposite the Dunn Memorial
Hospital.
6. Discharge Point(s), List for all discharge points:
0 0
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 flood plain included): Basically flat with
some gently sloping areas.
9. Location of nearest dwelling: Approximately 500 feet from entrance gate.

10. Receiving stream or affected surface waters: Cape Fear River
a. Classification: WS-V
b. River Basin and Subbasin No.: 030613
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 the river is limited.
PART II - DESCRIPTION OF DISCHARGE 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? 3.0 MGD
c. Actual treatment capacity of the current facility (current design
capacity). The treatment units to accomodate the 3.75 MGD flow are
now in place. The engineer's certification and acceptance of the
equipment by the City is expected within two months.
d. Date(s) and construction activities allowed by previous
Authorizations to Construct issued in the previous two (2) years.
On March 2, 1994, the City of Dunn was issued an authorization to
construct wastewater treatment plant improvements including: 1) a
new simplex 4,000 gpm, 50 HP suction lift pump; 2) a new
hydraulically operated mechanical bar screen; 3) a new ultrasonic
flow measuring device; 4) a new 60 foot diameter final clarifier; 4)
installation of replacement effluent pumps rated at 4,600 gpm; 5)
upgrading disinfection system to include automatic switching
chlorinators and sulfonators; 6) replacement of three six inch
sludge recirculation pumps with three new 8" pumps; 7) upgrading
instrumentation and control systems; 8) upgrading the Eastside
pumping station with three new 8 inch 1,150 gpm pumps; 9) upgrading
the existing outfall to the Eastside pump station, including approx.
8,700 feet of various sized sewers and manholes.
e. Please provide a description of existing or substantially
constructed wastewater treatment facilities. The existing WWTP
includes three influent screw pumps and a new suction lift pump, a
mechanical bar screen, an aerated grit chamber, influent flow
measuring and recording equipment, followed by a flow divider box
feeding two parallel aeration basins (diffused air), another flow
divider feeding two older and one new clarifier (total of three,
with room for expansion), a DAF sludge unit, sludge recirculation
pumps, an aerobic sludge digestor, aerated sludge holding, dual
automatic switching gas chlorinators and sulfonators, dual chlorine
contact tanks, three effluent pumps, and an effluent flow meter.
There are a series of "cascades" at the point of discharge within
the effluent manholes. Gravity sludge drying beds are also located
at this facility, though they are no longer used under normal
conditions.

f. Please provide a description of proposed wastewater treatment
facilities: No further additions are anticipated at this time.
9•
Possible toxic impacts to surface waters: None expected.
h. Pretreatment Program (POTWs only):
In development
Should be required
Approved
Not needed x * not at this time
2. Residuals handling and utilization/disposal scheme:
a. If residuals are being land applied, please specify DEM Permit
No. W00006101.
Residual Contractor: Environmental Waste Recycling
Telephone No. (919),998-8184
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): IV
4. SIC Code(s): 4952
Wastewater Code(s) of actual wastewater, not particular facilities; i.e.,
non -contact cooling water discharge from a metal plating company would be
14, not 56.
Primary 01 Secondary 23
Main Treatment Unit Code: 05003
PART III - OTHER PERTINENT INFORMATION
I. Is this facility being constructed with Construction Grants Funds or are
any public monies involved (municipals only)? yes
2. Special monitoring or limitations (including toxicity) requests: none
3. Important SOC, JOC, or Compliance Schedule dates (please indicate):
Date
Submission of Plans and Specifications none
Begin Construction none
Complete Construction none

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 and
operated. System improvements have been installed and are awaiting final
inspection and acceptance.
PART IV - EVALUATION AND RECOMMENDATION
It is the recommendation of this office that permit No. NC0043176 be
reissued to the City of Dunn for an additional five year period. By the time
the permit is actually issued, it is expected that all elements of the system
improvements will be fully completed, operational, and accepted by the City.
With this in mind, the permitted flow limit should be 3.75 MGD, with the
appropriately assigned winter/summer limits. (These system improvements are
presently in place and in use. The City is has a "punch list" of minor items
that still need attention. prior to final acceptance.)
ignature 'f Report Preparer
Water Quality Regional Supervisor
Date

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B, Howes, Secretary
A. Preston Howard, Jr., P.E., Director
March 2, 1994
Mr. Carl Dean, City Manager
City of Dunn
P.O. Box 1065
Dunn, North Carolina 28335
14- "
•
[DEHNR
SUBJECT: City of Dunn
Permit No. NC0043176
Authorization to Construct
Wastewater Treatment Facilities
Project No. CS370417-04
Harnett County
Dear Mr. Dean:
The final plans and specifications for the subject project have been reviewed and found
to be satisfactory.
Elie-ible
Authorization is hereby granted for modifications to the existing wastewater treatment
plant to include the addition of a simplex 4,000 gpm, 50 Hp suction lift pump and
fiberglass enclosure (a spare, "on the shelf' 4,000 gpm, 50 hp pump); replacing the
existing mechanical bar screen with a new hydraulically operated mechanical bar
screen; replacing the influent flow measuring device (stilling well float type) in the
existing 12-inch Parshall flume with an ultrasonic type; construct a new 60 foot
diameter final clarifier; replace the three effluent variable frequency drive, 3,000 gpm
turbine pumps and 14-inch discharge pipes with three 16", 4,600 gpm, variable
frequency drive pumps with 300 Hp motors; upgrading the existing disinfection system
(dual 200 lb/day manual chlorinators) with a new chlorination/dechlorination facility to
include two each, 500 lb/day, automatic switchover chlorinators and sulfonators;
replacing the three 6-inch, two speed (600 gpm or 1,000 gpm), 10/20 Hp sludge
recirculation pumps with three, two speed (1,050 gpm or 2,000 gpm) 8-inch, 26/50 Hp
pumps; upgrade instrumentation and control system to provide process monitoring; all
site work, electrical and appurtenances; modifications to the Eastside Pumping Station
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

PAGE 2
to include replacing the three existing 6-inch, 550 gpm 25 Hp pumps with three 8-inch
1,150 gpm, 50 Hp pumps; and replace the existing outfall to the Eastside Pump Station
with approximately 4,845 l.f of 24-inch, 2,210 l.f. of 18-inch, 470 11 of 16-inch, 2,120
1.£ of 15-inch and 330 11 of 8-inch gravity sewers, 16 five foot diameter manholes, 31
four foot manholes, 100 l.f. of 36-inch steel encasement and all appurtenances.
The Permittee shall employ an actively State certified wastewater treatment plant
operator to be in responsible charge of the wastewater treatment facilities. Such operator
must hold a valid State Certificate of the grade at least equivalent to the classification
assigned to the wastewater treatment facilities by the Certification Commission. When a new
chief operator must be obtained to be in responsible charge of the new facilities, it is required
that this be done by the time the construction of the facilities is 50% complete.
The Authorization -to -Construct is issued in accordance with Part III, Paragraph C of
NPDES Permit No. NC0043176, issued October 29, 1993 and shall be subject to revocation
unless the wastewater treatment facilities are constructed in accordance with the approved
plans, specifications, and supporting documents; and are in compliance with the conditions
and limitations specified in Permit No. NC0043176.
The Permittee shall have an acceptable sludge analysis and a sludge toxicity analysis
which have been approved by the Division of Environmental Management, Water Quality
Section prior to the disposal of any sludge from the new wastewater treatment plant. Copies
of the analyses, supporting documents, and approvals shall be submitted to the Division of
Environmental Management's Fayetteville Regional Office.
The disposing. selling or free distribution of wet, dried, composted sludge or sludge -like
materials from wastewater facilities without prior review and approval by this Division is
illegal.
During the construction of the proposed additions/modifications, the permittee shall
continue to properly maintain and operate the existing wastewater treatment facilities at all
times, and in such a manner, as necessary to comply with the effluent limits specified in the
NPDES Permit.
You are reminded that it is mandatory for the project to be constructed in accordance
with the North Carolina Sedimentation Pollution Control Act, and, when applicable, the North
Carolina Dam Safety Act. In addition, the specifications must clearly state what the
contractor's responsibilities shall be in complying with these Acts.
One (1) set of final approved plans and specifications is to be forwarded to you for
your files. The copy of the approved plans and specifications shall be maintained on file by
the Owner for the life of the project.

PAGE 3
Upon completion of construction and prior to operation of this permitted facility, a
certification must be received from a Professional Engineer certifying that the permitted
facility has been installed in accordance with the approved plans and specifications. Mail the
Certification to the Peitrllts and Engineering Unit, P. O. Box 29535, Raleigh, North Carolina
27626-0535. (Engineer's Certification Form is attached.)
If you have any questions or need additional information, please contact Mr. Bill
Hoffman, at [phone], extension 615.
Sincerely,
reston Howard Jr., P.E.
Attachment
FFJ:vk
cc: Davis, Martin, Powell & Associates
Mr. Don Safrit
Fayetteville Regional Office
Mr. Tom Fahnestock
Mr. Don Evans
Ms. Valerie Lancaster
Mr. Gene Johnson
Ms. Cindy Finan
DMU
SRF

NPDES DOCIMENT !;CANNIN`: 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
( Fd'i5 10 k1
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
June 2, 1993
This document is printed on reuse paper -ignore any
content on the reverse side

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Environmental Management
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
June 2, 1993
MEMORANDUM
TO: Dave Goodrich
Water Quality Section
FROM: Rob Brown 0
Construction Grants and Loans Section
SUBJECT: Dunn 201 Facility Plan
1:30EHNR
lr: Y
,JUM 0 3 1993
Attached please find a copy of the proposed schedule for the Dunn
rehabilitation program. Any comments should be directed to this office.
Thank you.
/tk
Attachment
��.itd arna"I-o owe CeAlct� �' nt'¢''
/‘,4/4/4// / KP4W 147 girri.h9
,of iviy.
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

Original Sent To
GPF/SRF
dmp
FCF1V
JUN 2 1993
CONSTRUCTION GRANTS & LOANS SECTICei
DEM-EHNR
DAVIS - MARTIN - POWELL & ASSOCIATES, INC.
ENGINEERING • LAND PLANNING • SURVEYING
218 GATEWOOD AVENUE • SUITE 102
HIGH POINT, NC 27262
PHONE [phone] • FAX [phone]
May 27, 1993
Re: City of Dunn, NC
Wastewater Facilities
201 Amendment
Job No. E-1487
Mr. M. J. Noland, P.E.
ReOional Supervisor
Division of Environmental Management
Wachovia Building, Suite 714
Fayetteville, North Carolina 28301
Dear Mr. Noland:
As a part of the initial 201 Planning Report prepared during the
1970's for the Dunn, Benson, Erwin Planning area, an extensive
Sewer System Evaluation Survey was carried out on the system of
sewers contributing to the Dunn Wastewater Treatment Facility.
This survey confirmed that this system was subjected to significant
volumes of infiltration and inflow and proposed an extensive
program of sewer system rehabilitation. On this basis, the
original wastewater treatment facility was designed to treat
rehabilitated flows. After treatment plant construction proceeded,
funding for rehabilitation was, to a large degree, recended and
thus expected financial assistance for sewer system rehabilitation
was not available.
Through the 1980's, the City was successful in funding several
small rehabilitation contracts and addressed some of the major
problems identified in the previously prepared Sewer System
Evaluation Survey. During the mid to late 19.80's, the City
formulatedan ongoing sewer system maintenance crew charged with
the duties to locate, evaluate, and repair infiltration/inflow
sources within the Dunn sewer system.
During the late 1980's, it became obvious the original Sewer System
Evaluation Survey was not representative of the actual condition of
the system. Equally obvious was the continuing deterioration of
the aging sewer system over the nearly 15 years since the original
Evaluation Survey was prepared. Rehabilitation work.continued on
the system, however, the effectiveness of these efforts was not
producing the desired results.
THIS BELONGS TO GPF/SRF

Mr. M. J. Noland, P.E.
Regional Supervisor
Division of Environmental Management
May 27, 1993
Page -2-
From late 1988 through late 1989, wetter than normal weather
condition combined with the known problems with the sewer system
resulted in flow violations for five months during this period.
This condition resulted in a Notice of Violation being issued and,
ultimately, the City being assessed fines for permit violations.
Recognizing the need for renewed Sewer System Evaluation efforts,
the City committed to an in house Evaluation Survey. In support of
this effort, the City purchased a new sewer jet flusher, smoke
testing equipment, and an internal sewer pipe TV inspection system.
Understanding that further evaluation and associated rehabilitation
would be a time consuming process, the City applied for and
received an SOC to allow normal growth and development during this
evaluation and rehabilitation process. This SOC was granted for a
2 year period including calendar years of 1990 and 1991 with an
expiration date of January 1, 1992.
During this initial evaluation process, the following activities
were accomplished:
Smoke Testing 184,000 L.F.
Manhole Physical Survey 888 Each
Internal TV Inspection 16,500 L.F.
Based upon conditions noted in this Evaluation Survey, a
construction contract was awarded and completed during late 1991
which included the following items:
Internal Grouting on a
Test and Seal Basis 10,000 L.F.
Extensive Manhole Repairs 40 Each
Sewer Main Replacement 5,000 L.F.
City forces continued to focus on manhole and service line repairs
and replacement of minor segments of sewer mains.
Not withstanding the ongoing efforts directed at Evaluation and
Rehabilitation excessive rainfalls continue to result in flow
violations above the permitted capacity. Recognizing the magnitude
of this infiltration/inflow problem and in consultation with the
Construction Grants/Loan Section of the Division of Environmental
Management, the City of Dunn is proceeding with a planned expansion
of their Black River Wastewater Treatment Plant by 750,000 gallons
per day to a permitted capacity of 3.75 million gallons
perOutdayl
along with the total replacement of the aged Sou

Mr. M. J. Noland, P.E.
Regional Supervisor
Division of Environmental Management
May 27, 1993
Page -3-
Sewer. This outfall sewer is in such deteriorated condition that
an internal inspection is impossible. Based upon this condition,
it is suspect of contributing significantly to the system
infiltration/inflow problem.
Although a major capacity expansion is planned, along with the
Southeast Outfall replacement, the City recognizes that it will be
necessary to continue with an ongoing program of Sewer System
Evaluation and Rehabilitation. The age and condition of the
collection sewer system dictates that continual maintenance type
evaluation and rehabilitation activities continue to reduce and
control infiltration and inflow.
During the last two years, the City crews have accomplished the
following Evaluation and Rehabilitation efforts:
1. 'Manhole repairs - 147 manholes were the
subject of structural repairs, repair of
potential and/or active I & I sources and
coating to prevent and/or repair active inflow
and infiltration.
2. Manhole replacement - The City performed
and/or assisted with the replacement of 2
manholes during this period.
3. Inflow or infiltration - In service lines or
main areas, 69 separate incidents were
repaired.
4. Cleanout cap replacement - Installed approx-
imately 260.
5. Miscellaneous repairs - This crew made approx-
imately 45 repairs to sewer lines that may or
may not have had direct inflow of infiltration
problems associated with them.
6. Smoke testing - Smoke tested approximately
5,600 L.F.
7. Television of sanitary sewer lines - approx-
imately 43,000 L.F. of sewer line has been
TV'ed.
Understanding the need to maintain an ongoing active Evaluation and
Rehabilitation effort, the City has accelerated the activities of

Mr. M. J. Noland, P.E.
Regional Supervisor
Division of Environmental Management
May 27, 1993
Page -4-
the dedicated crew. They will, on a full time basis, continue
their evaluation efforts expanded to include flow monitoring and
isolated dyed water flooding. Inventoried items for repair, along
with newly discovered items, will be repaired on a continuing
basis. The activities of this crew will be directed by an
Assistant Director of Public Works who will also undertake a
program of education for this crew in the methods of identification
and repair of deficiencies.
These activities will be funded on an annual basis and will become
a permanent activity within the Public Works Department. When an
adequate number of difficult repairs have been identified,
requiring abilities beyond those of the Public Works Department,
contracts will be prepared for public bidding.
Through these efforts, the City will maintain a permanent program
directed toward the identification and elimination of system
infiltration and inflow.
If we can provide you with any other information regarding the
City's commitment, please let us know.
With best personal regards, I remain,
Very truly yours,
DAVIS-MARTIN-POWELL & ASSOCIATES
Charles E. Powell, P.E.
CEP/res
c: Mr. Carl Dean
Mr. Ronnie Autry
Mr. Charles Adams
Rob Brown
Mr. Gene Johnson
Mr. Joe Campbell
File

NPDES DOCUMENT :MANNINO 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:
April 26, 1993
This tillocwrierit ifis printed CM reime paper - ignore arr3r
content mi. the x-Ne-srerme "side

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NC0043176
PERMIITEE NAME:
FACILITY NAME:
City of Dunn
Blacicriver WWTP
Facility Status: Existing
Permit Status: Renewal
Major
Pipe No.: 001
Minor
Design Capacity: 3.75 MGD*
Domestic (% of Flow):
Industrial (% of Flow):
99 %
1 %
Comments:
*This is an increase in flow from a previous request of 3.0 MGD on the
WLA request of 1/12/93.
RECEIVING STREAM: Cape Fear River
Class: WS-V
PLOTTED
Sub -Basin: 03-06-13
Reference USGS Quad: F 24 SW (please attach)
County: Harnett
Regional Office: Fayetteville Regional Office
Previous Exp. Date: 6/30/93 Treatment Plant Class: 111
Classification changes within three miles:
None, Changes to WS-IV 8.2 miles upstream of Carvers Creek
Requested by: Greg Nizichk)
Prepared by: -1)1474
Reviewed by: &60-1-4/`---cjazy\-etv-e-6-17-1
u-Aet
Date:
Date: Date: z-/- 2
Date:
3/23/93
/a.3)L7
Modeler
Date Rec.
#
)Pt&
A 2,5t "13
137Co
Drainage Area (mi2 ) 5 Avg. Streamflow (cfs): 56o/
7Q10 (cfs) q6. 6,Winter 7Q10 (cfs)
Toxicity Limits: IWC ° %
Instream Monitoring:
Parameters A1/4
30Q2 (cfs)
Acut
Upstream Location
Downstream Location
Effluent
Characteristics
Summer
Winter
BOD5 (mg/1)
/ 2-- • 0
Z 4. V
NH -N (mg/1)
3
2- 0
zi-, 0
D.O. (mg/1)
57 0
5: 0
TSS (mg/1)
..,0. 0
..(9 • 0
F. Col. (/100 ml)
j00, 0
000. 0
pH (SU)
kesidual Chlorine (14/1):
_Temperature(°C):
TP (mg/1):
TN (mg/1):
-Cadmium (p.g/1):
Chromium (14/1):
-Copper 44/1):
Lead (lga):
-Nickel (p.g/1):
Zinc (11g/9:
28.0
monitor
28.0
monitor
monitor
monitor
- monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
thonitor
monitor
, •
monitor
monitor
monitor
monitor
.,
ComrToxicity test (chronic pass/fail
using ceriodaphnia) @ 1%*
*Mar, Jun, Sep, Dec
CYA 6,01) int\on-\-tql

drnp
DAVIS - MARTIN - POWELL & ASSOCIATES, INC.
ENGINEERING • LAND PLANNING • SURVEYING
218 GATEWOOD AVENUE • SUITE 102
HIGH POINT, NC 27262
PHONE [phone] • FAX [phone]
March 15, 1993
Re: Blackriver Wastewater
Treatment Plant
NPDES Renewal & Expansion
Application
Permit No. NC0043176
Our Job No. E-1577
Ms. Coleen Sullins
Permits & Engineering Unit
Division of Environmental Management
PO Box 29535
Raleigh, North Carolina 27626-0535
Dear Ms. Sullins:
The City of Dunn's current NPDES permit expires June 30, 199%.
During December of 1992, a renewal request was submitted for the
existing 3.0 MGD facility. On February 3, 1993, a revised permit
application was submitted requesting a capacity increase to 3.75
MGD. A copy of the February 3, 1993 transmittal letter is enclosed
which indicates speculative effluent limitations provided by Mr.
Trevor Clement during previous conversations.
The DEM Construction Grants/Loan Group has indicated their
preliminary approval of a 201 Amendment for an expansion to 3.75
MGD. Design is moving forward at an accelerated rate and nearing
completion at this time in order to be assured of a SRF loan
commitment by June.
As discussed on March 11, 1993, the Construction Grants/Loan Group
requested that we acquire written speculative effluent limitations
for the proposed expanded facility.
Please accept this letter as the City of Dunn's official request
for written speculative limits for the pending permit capacity
expansion to 3.75.

Ms. Coleen Sullins
Permits & Engineering Unit
Division of Environmental Management
March 15, 1993
Page -2-
Thank you for your assistance in these regards and, if you have any
questions, please let us know.
Very truly yours,
-MARTIN-POWELL & AS OCIATES
RIJM/res
c: Mr. Ronnie Autry
Mr. Joe Campbell
File

•drnp
'DAVIS - MARTIN - POWELL & ASSOCIATES, INC.
ENGINEERING • LAND PLANNING • SURVEYING
218 GATEWOOD AVENUE • SUITE 102
HIGH POINT, NC 27262
PHONE [phone] • FAX [phone]
February 3, 1993
Re: Blackriver Wastewater
Treatment Plant
NPDES Renewal & Expansion
Application
Permit No. NC0043176
Our Job No. E-1577
Ms. Coleen Sullins
Permits & Engineering Unit
Division of Environmental Management.
PO Box 29535
Raleigh, North Carolina 27626-0535
Dear Ms. Sullins:
The City of Dunn's current NPDES permit expires June 30, 1993. A renewal
request was submitted to your office during December of 1992 to comply with
the 180 day pre -expiration filing deadline. The existing permit has a 'monthly
discharge average limit of 3.0 MGD. In November of 1992, the City of Dunn
submitted a Draft 201 Amendment to the Construction Grants/Loan Group for
considerations of low interest loan financing. The Amendment addresses
improvements needed at the plant to allow more capacity to pass through the
facility during infiltration/inflow (I/I) laden events without violating the monthly
average permit limitations.
The existing plant has three influent screw pumps that can process up to 6.826
MGD into the treatment train. The plant's effluent is discharged 3 miles from
the plant into the Cape Fear River by means of an effluent pumping station.
The maximum effluent pumping rate is 4.3 MGD. This indicates that more
flow can be delivered into the plant during extensive I/I events than can be

Ms. Coleen Sullins
Permits & Engineering Unit
Division of Environmental Management
January 3, 1993
Page -2-
transported out of the plant, thereby creating the potential for flooding the
various structures throughout the plant. To avoid this situation, plant
operating personnel reduce the influent pumping rates to capacities that can
be processed through the plant, while allowing the excessive I/I laden flows to
be stored by surcharging the _collection system outfalls.
The proposed improvements include additional clarifier construction and
effluent pumping modifications to pass more flow through the facility.
However, if all flows are processed through the expanded facility, the 3.0 MGD
average daily monthly average could be exceeded during longer duration I/I
laden events. The total estimated project cost for the improvements included
in the Amendment is $2.44 million including plant improvements, outfall
replacements, and pumping system expansions.
In mid January, the Construction Grants/Loan Group indicated their approval
of the Amendment and enneering design is moving forward at an accelerated
rate to meet a March 15, 1993 plan submission deadline to be assure of a loan
commitment this summer.
Preliminary discussions with Mr. Trevor Clement indicates a capacity increase
to 3.75 MGD would result in the following effluent limitations:
BOD
Summer 12 mg/1 2 mg/1
Winter 24 mg/1 4 mg/1
Mr. Clement also indicated that dechlorination may also be required for this
facility.
During the past four years, historical data indicates an average effluent BOD
concentration of 8.5 mg/1 and NH3-N concentration of less than 1.0 mg/1. The
City of Dunn recently constructed a 500,000 gallon sludge holding tank and
began a land application program. Considering the historical data, the newly

Ms. Coleen Sullins
Permits cgt Engineering Unit
Division of Environmental Management
January 3, 1993
Page -3-
enacted sludge management program, and the proposed plant improvements
indicated in the 201 Amendment, we are confident that the treatment facility
can achieve the anticipated effluent limitation at a capacity of 3.75 MGD.
This information is provided. in support of the enclosed revised NPDES
Application Form. A copy of the Draft 201 Amendment is also enclosed.
Thank you for your assistance in these regards, and if you have any questions
or comments, please let us know.
Very truly yours,
RLM/res
c: Mr. Carl Dean
Mr. Ronnie Autry
Mr. Joe Campbell
Mr. Gene Johnson
Mr. Rob Brown
File

Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Stream Classification:
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Topo Quad:
FACT SHEET FOR WASTELOAD ALLOCATION '
City of Dunn/Blackriver
NC0043 176
Domestic - 100%
Existing
Renewal
Cape Fear River
WS-V
030613
Harnett
Fayetteville
Nizich
3/23/93
F24SW
Request
WWTP
APR 14 1993
ENV. MANAGEMENT
FAYETTEVii.LE REG. CiTiCr
Stream Characteristic:
USGS #
Date:
Drainage Area (mi2):
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
30Q2 (cfs):
IWC (%):
It
JORDAN DAM
MIN. FLOWS
3464
586.6
3601
1.0
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
THIS WLA IS FOR AN EXPANSION TO 3.75 MGD. Per Ausley, tox. test limit and type of
test will change from a 48-hour acute test @ 75% to a chronic test with a pass/fail limit of 1.0%.
He was consulted since the IWC is actually 0.98%, so it was questionable on whether to give an
acute 48-hour test (@98% or 90%) or a chronic test at 1%.
In order to be consistent with other dischargers upstream of Dunn (i.e., Lillington and Angier),
limits of 12 mg/1 (BOD5) and 2 mg/1 (NH3) will be given. A limit of 28 14/1 for total residual
chlorine will be given.
Speci chedul Requirements and additional comments from Reviewers:
V " 4...
-t42- 1 / -47.)
sdlo",e4 6h, CA r. -92041
Recommended by:
Reviewed by
Instream Assessment:
Regional Supervisor:
Permits & Engineering:
RETURN TO TECHNICAL SERVICES BY:
Date: 4/73
Date: /
Date: lihri 73
Date:
MAY 1 11993

Existing Limits:
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/100 ml):
pH (SU):
Residual Chlorine (j4/1):
Temperature (°C):
TP (mg/1):
TN (mg/1):
Tox. test (48-hour acute)
Recommended Limits:
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/100 ml):
pH (SU):
Residual Chlorine (14/1):
Temperature (°C):
TP (mg/1):
TN (mg/1):
Cadmium (14/1):
Chromium (14/1):
Copper (14/1):
Lead (14/1):
Nickel (pg/1):
Zinc (14/1):
Mercury (p.g/1):
Toxicity test (chronic pass/fail
using ceriodaphnia)
*Mar, Jun, Sep, Dec
(); E Cr-recc (0\0/0
Limits Changes Due To:
2
PARAMETERS
Monthly Average
3.0
30.0
monitor
30.0
1000.0
6-9
monitor
monitor
monitor
monitor
75%
Monthly Average
Summer Winter
3.75 3.75
12.0 24.0
2.0 4.0
30.0 30.0
200.0 200.0
6-9 6-9
28.0 28.0
monitor monitor
monitor monitor
monitor monitor
monitor monitor
monitor monitor
monitor monitor
monitor monitor
monitor monitor
monitor monitor
monitor monitor
WQ or EL
WQ
WQ
EL
@ 1%*
Imon-1/2-ti\ (awy\m-G)
Parameter(s) Affected
c-e co
fie,
Sa-rvATIN.1
Change in 7Q10 data
New regulations/standards tox. test
New procedures total residual chlorine
New facility information
x Parameter(s) are water quality limited. For some parameters, the available load capacity of
the immediate receiving water will be consumed. This may affect future water quality based
effluent limitations for additional dischargers within this portion of the watershed.

3
MISCELLANEOUS INFORMATION & SPECIAL CONDMONS
Adequacy of Existing Treatment
Has the facility demonstrated the ability to meet the proposed new limits with existing treatment
facilities? Yes No t•
If no, which parameters cannot be met?
Would a "phasing in" of the new limits be appropriate? Yes No
If yes, please provide a schedule (and basis for that schedule) with the regional
office recommendations:
If no, why not?
The provosQ," 1.4 0 4,"e / e 0 VP ••••• .16S
Ct7w)4eL0C--ta. PA as, 4,3 4-s-11 •-/-4-te
it/ac ass?" ,•• y . p et:Vega-el /m/Or ea, m Aie-S
dAgirt,441/' •gy ""rAO ,
Special Instructions or Conditions
Alfrth-
/4I/1/AJc
h.2
Wasteload sent to EPA? (Major) (Y or N)
(If yes, then attach schematic, toxics spreadsheet, copy of model, or, if not modeled, then old
assumptions that were made, and description of how it fits into basinwide plan)
Additional Information attached? (Y or N) If yes, explain with attachments.

Facility Name Add
Permit # 113/7 Pipe #
CHRONIC TOXICITY PASS/FAIL PERMIT LIMIT (QRTRLY)
The effluent discharge shall at no time exhibit chronic toxicity using test procedures outlined in:
1.) The North Carolina Ceriodaphnia chronic effluent bioassay procedure (North Carolina Chronic Bioassay
Procedure - Revised *September 1989) or subsequent versions.
The effluent concentration at which there may be no observable inhibition of reproduction or significant mortality
is k 0 % (defined as treatment two in the North Carolina procedure document). The permit holder shall perform
quartertv monitoring using this procedure to establish compliance with the permit condition. The first test will be
performed crier thpy daysX.em the effective date of this permit dieing the months of
4fev
. Effluent sampling for this testing shall be performed at the NPDES
ri
permitted final efflue t discharge below all treatment processes.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGP3B.
Additionally, DEM Form AT-1 (original) is to be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of
Environmental Management
4401 Reedy Creek Road
Raleigh, N.C. 27607
Test data shall be complete and accurate and include all supporting chemical/physical measurements performed in
association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent toxicity
sample must be measured and reported if chlorine is employed for disinfection of the waste stream.
Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring will
begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement will
revert to quarterly in the months specified above.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of
Environmental Management 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 and appropriate environmental controls, shall constitute an invalid test and will require immediate
retesting(within 30 days of initial monitoring event). Failure to submit suitable test results will constitute
noncompliance with monitoring requirements.
7Q10 .5n • 6 cfs
Permitted Flow 3,1S MGD
IWC .10
Basin & Sub -basin c.to 0,061 3
Receiving Str,qtn 040,0 Fe Kis/E-4
County ff4RAIC-ri-
fele triakeitiii 1‘1)/
QCL PIF Version 9191

ir/Co0.13/-74-
/TY 12fAIA/
-5:114
611"
e gig
/1-//5 /11 771A6--- A Leirre-k
PtAtC1L/71cce/t/p4,J/e-P Vie PeR1fi7A19/74/41--vevi 401,/c:44
Afrr AWP ,1•Pre 775
77-114: /4//7704--__044 4E621,16C7: 77,1-5
_ A/4-v 77k eyb,/..s-/o/ki 1,9-k-Nr4
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ari‘ ,1:1;t12
•

North Carolina Division of Environmental Management
Water Quality Section/Rapid Assessment Group
March 24, 1993
MEMORANDUM
TO: Monica Swihart
THROUGH: Mike Scoville
Carla Sanderson
FROM: Dave Goodrich
SUBJECT: Request for Comments on Dunn 201 Facilities Plan
Dunn WWTP - NPDES No. NC0043176
Harnett County
030613
This is in response to your request for comments regarding the City of Dunn's 201
Facilities Plan Amendment. A request is in-house for an expanded flow for this facility
from 3.0 MGD to 3.75 MGD. The requested increase in flow is not to accomodate
additional industrial or domestic users, but instead to allow better treatment for excessive
inflow and infiltration. Although the 201 Facilities Plan outlines several measures taken or
currently underway to decrease inflow and infiltration, it is impossible to determine (by
merely reading the report) whether or not sufficient progress has been made such that an
increase in the permitted wasteflow discharge is now warranted. Technical Support
recommends that Dunn and their consulting engineers work closely with the Fayetteville
Regional Office and the Construction Grants office to assure that problems with inflow and
infiltration are adequately addressed before considering this expansion.
The 201 Report does not recognize speculative limits for the expansion, nor does it
mention dechlorination provisions. A total residual chlorine limit of 28 14/1 will be given
for this facility upon expansion. Speculative limits have been given as 12 mg/1 (BOD5) and
2 mg/1 (NH3) for the summer months. In the winter, limits of 24 mg/1 and 4 mW1 are likely
to be given for BOD5 and NH3 respectively. The city should be aware that a study of the
Cape Fear River in this area is scheduled for the near future and further limit changes may
be recommended in 1996 when the Cape Fear River basinwide management strategy plan
has been completed. Please call me if you have any questions.

.7;
MAR 2 6 1993
TECHNICAL
State of North Carolina
Department of Environment, Health, ancliNatural_Resources
512.North Salisbury Street • Raleigh, North Carolina 27604
James B. Hunt, Jr., Governor Jonathan B. Howes, Secretary
March 26, 1993
MEMORANDUM
TO: Melba McGee, Planning and Assessment
FROM: Monica Swihart, Water Quality Planning Branch
SUBJECT: Project Review #530 - Amendment to the 201 Facilities
Planning Report Dunn -Benson -Erwin Planning Area, Dunn
Wastewatel. System
The Division of Environmental Management's Water Quality
Section has reviewed the subject document. There is not adequate
information included in the document's two page environmental
assessment to adequately assess the project's potential impacts to
wetland and surface water quality resources. The document should
discuss the potential construction impacts associated with
replacing the Eastern Outfall. There is no site specific
information included in the document to assess whether additional
land will be disturbed during the outfall replacement. If the
project involves the sufficient filling of Section 404 wetlands to
warrant issuance of a permit from the U.S. Army Corps of Engineers,
a 401 Water Quality Certification will be required from our office.
Questions regarding the 401 Certification process should be
directed to our Wetlands and Technical Review Group at (919) 733-
1786.
I have attached comments from our Technical Support Branch
regarding the proposed expansion of the wastewater treatment plant
from 3.0 MGD to 3.75 MGD. The document should include a discussion
of the speculative limits for the expansion as well as the
dechlorination provisions for the expansion. In addition to
discussing the necessity of the wastewater plant improvements in
terms of correcting severe inflow and infiltration problems, the
document should include a discussion of the long-term plans for
accommodating additional users at the plant. This discussion is
REGIONAL OFFICES
Asheville Fayetteville Mooresville Raleigh Washington Wilmington Winston-Salem
704=1-6208 919/486-1541 704/663-1699 919/571-4700 919/946-6481 919/395-3900 919/896-7007
Pollndon Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

Melba McGee
March 26, 1993
Page 2
necessary to adequately consider the potential secondary
environmental impacts from the expansion that would be created by
changes in land use patterns or densities of land use development.
In summary, the environmental assessment needs to be revised
to include a more thorough description of the existing environment
and the potential environmental consequences of the proposed
project. In addition, the EA should include an alternative
analysis which clearly outlines the alternatives to the proposed
action. Thank you for the opportunity to provide comments.
8625er.mem
cc: Tommy Stevens
Carolyn McCaskill
Coleen Sullins
Dave Goodrich

North Carolina Division of Environmental Management
Water Quality Section/Rapid Assessment Group
March 24, 1993
MEMORANDUM
TO: Monica Swihart
THROUGH: Mike Scoville
Carla SandersoiCP
FROM: Dave Goodricl?
SUBJECT: Request for Comments on Dunn 201 Facilities Plan
Dunn WWTP - NPDES No. NC0043176
Harnett County
030613
This is in response to your request for comments regarding the City of Dunn's 201
Facilities Plan Amendment. A request is in-house for an expanded flow for this facility
from 3.0 MGD to 3.75 MGD. The requested increase in flow is not to a.ccomodate
additional industrial or domestic users, but instead to allow better treatment for excessive
inflow and infiltration. Although the 201 Facilities Plan outlines several measures taken or
currently underway to decrease inflow and infiltration, it is impossible to determine (by
merely reading the report) whether or not sufficient progress has been made such that an
increase in the permitted wasteflow discharge is now warranted. Technical Support
recommends that Dunn and their consulting engineers work closely with the Fayetteville
Regional Office and the Construction Grants office to assure that problems with inflow and
infiltration are adequately addressed before considering this expansion.
The 201 Report does not recognize speculative limits for the expansion, nor does it
mention dechlorination provisions. A total residual chlorine limit of 28 p4/1 will be given
for this facility upon expansion. Speculative limits have been given as 12 mg/1 (BOD5) and
2 mg/1 (NH3) for the summer months. In the winter, limits of 24 mg/1 and 4 mg/1 are likely
to be given for BOD5 and NH3 respectively. The city should be aware that a study of the
Cape Fear River in this area is scheduled for the near future and further limit changes may
be recommended in 1996 when the Cape Fear River basinwide management strategy plan
has been completed. Please call me if you have any questions.

NPDES WASTE LOAD ALLOCATION
PERMIT Na: NC0043176
PERM:El-TEE NAME:
FACILITY NAME:
City of Dunn
Blacicriver WWTP
Facility Status: Existing
Permit Status: Renewal
Major Minor
Pipe No.: 001
Design Capacity: 3.0 MGD
Domestic (% of Flow): ciq 18-%
Industrial (% of Flow): lft %
Comments: MeATPA-c-ic-elks sci4A Ges
A Nfrit-K 0 F 0, 030 (.:113 PLA
RECEIVING STREAM:Cape Fear River
Class: WS-V
Sub -Basin. -03-06-18 03 -C, - /3
Reference USGS Quad: F 24 SW
County: Harnett
Regional Office: Fayetteville Regional Office
Previous Exp. Date: 6/30/93 Treatment Plant Class: 111
(please attach)
Classification changes within three miles:
None. Changes to WS-IV 8.2 miles upstream of Carvers Creek
Requested by: Gre Nizich Date: 1/12/93
Prepared by: Date: g 4r- 13
Reviewed by: (C1411- air-dinfJ4rr`- ate: TCI
I / 93
Modeler
Date Rec.
#
1-301
Drainage Area (mi2 )
4 Avg. Streamflow (cfs): 3‘0/
7Q10 (cfs) 5-5/.. (rWinter 7Q10 (cfs)
Toxicity Limits: IWC 77 % hronic
Instream Monitoring:
Parameters AO
Upstream Location
Downstream Location
30Q2 (cfs)
Effluent
Characteristics
-Summex
Winter --
BOBS (mg/1)
NH3-N (mg/1)
01Miller-V
D.O. (mg/1)
TSS (mg/1)
F. Col. (/100 ml)
200
pH (SU)
6 -7
Residual Chlorine (pgA):
_ Temperature (°C):
TP (mg/1):
TN (mg/I):
-Cadmium (µg/1):
Chromium (pg/1):
-Copper (41):
Lead (i.tg/1):
-Nickel (14/1):
Zinc (i_tg/l):
, .____ _ ,.. _ ..
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
—
• .
Comments:
PLOTTED

MEMO
T.: /Ki cv.,„ i Dave
SUBJECT: 1/4)kiklA
Vet,S4) ) tetz4)
cS9-t-g, -1LD km_a-t) VAA-0-4%)--4
6u,tc4Q0 ce_s
•c)(1 cemp_AA1 CA"- Ov.iae,t 0.CcAit
okb ,,,A4g_ ..4
L"LILD 14M (-41(--(-C4 fa. ,-((.tAvs
Ltlytz_ c„2,13,
6
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-k5
k
Cocc
-7((e-) uutc-tj
. r
v6.4, ----t-LeAAA From"
North Carolina Department of Environment,
Health, and Natural Resources Tgr'
Printed on Recycled Paper
ii2Ja_cpit Dunn tooq Ste
DATE:

Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Stream Classification:
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Topo Quad:
FACT SHEET FOR WAS I ELOAD ALLOCATION
City of Dunn/Blackriver
NC0043176
Domestic - 100%
Existing
Renewal
Cape Fear River
WS-V
0306V
Harnett
Fayetteville
Nizich
1/12/93
F24SW
Request #
WWTP
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
7307
MAR 5 1993
ENV. MANAGEMENT
FAYETTEVILLE REG. OFFICF
Stream Characteristic: JORDAN DAM
USGS # MEN. FLOWS
Date:
Drainage Atm (m12): 3464
Summer 7Q10 (cfs): 586.6
Winter 7Q10 (cfs):
Average Flow (cfs): 3601
30Q2 (cfs):
IWC (%): 0.79
Monitoring for metals should be required at this facility. A limit for mercury was given as this., ),
pollutant has been found in two of the three priority pollutant analyses reviewed. This limit is
fairly high (1.5 µWI) and should not be a compliance problem, although a concentration of 2.21.tg/1
has been reported in the past. Kramer (FRO) was notified of these changes and the source of this
mercury is not obvious at present. Fecal limit will change to 200/100 ml and tox. test limit will
change from 74% to 79% based on more accurate low -flow estimates.
Clements (Tech. Supp.) spoke with Randy McNeil (consulting engineer for Dunn) on 1/19/93.
Dunn may be expanding to 3.5 or 4 MGD in the future. Limits for this expansion will be between
5 and 12 mg/1 (BOD5) and 2 (NH3). These represent BPJ limits for this area and will be similar to
limits given to Lillington and Angier. It should also be noted that dechlorination will be required
upon renewal and the toxicity test will change from acute to chronic if flow is > 3.85 MGD.
Special Sthedu1eRequirements and additional comments from Reviewers:
Recommended by:
Reviewed by
Instream Assessment:
Regional Supervisor:
Permits & Engineering:
RETURN TO TECHNICAL SERVICES BY:
41/rit Date:
-2
,S9/y?dpiv2ey') Date:
Date: 3— e 3
Date: 34 3/4 3
MAR 2 6 1993

Existing Limits:
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/100 ml):
pH (SU):
Residual Chlorine 4W1):
Temperature (°C):
TP (mg/1):
TN (mg/1):
Tox. test (48-hour acute)
Recommended Limits:
Wasteflow (MGD):
BOD5 (mg/1):
NH3N (mg/1):
DO (mg/1):
TSS (mg/1):
Fecal Col. (/100 ml):
pH (SU):
Residual Chlorine (14/1):
Temperature (°C):
TP (mg/1):
TN (mg/1):
Cadmium (µg/1):
Chromium (ig/1):
Copper (m.g/1):
Lead (1.1g/1):
Nickel (lig/1):
Zinc (p.g/1):
Mercury (pg/1):
Toxicity test (48-hour acute
pass/fail using ceriodaphnia)
*Mar, Jun, Sep, Dec
Limits Changes Due To:
2
PARAMETERS
Monthly Average
3.0
30.0
monitor
30.0
1000.0
6-9
monitor
monitor
monitor
monitor
75%
Monthly Average
3.0
30.0
monitor
30.0
200.0
6-9
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
monitor
.1.1mov\;-1-ov WQ
@ 79%*
WQ or EL
WQ
EL
.6ktotd bvoltZ-11)14_.a Maik
Parameter(s) Affected
Change in 7Q10 data tox. test
New regulations/standards fecal
New procedures
New facility information metals
x Parameter(s) are water quality limited. For some parameters, the available load capacity of
the immediate receiving water will be consumed. This may affect future water quality based
effluent limitations for additional dischargers within this portion of the watershed.
V /Tip nfA-t_ Armco meij-rs
L 0 cAlieki Mr, -Tv,/ 12ATA- ICA .

Facility Name nit4N1 Permit # +31 7C. Pipe #
ACUTE TOXICITY PERMIT LIMIT (QRTRLY)
The pemittee shall conduct acute toxicity tests on a quarterkv basis using protocols defined as definitive in E.P.A.
Document 600/4-85/013 entitled 'The Acute Toxicity of Effluents to Freshwater and Marine Organisms." The
monitoring shall be performed as a Daphnia pulex or Ceriodaphnia 48 hour static test, using effluent collected as a
24 hour composite. The LC50 of this effluent using the previously stated methodology may at no time in any
toxicity test be less than 77 %. Effluent samples for self -monitoring purposes must be obtained during
representative effluent discharge below all waste treatment. The first test will be performed after thirty days from
the effective date of this permit during the months of Aia,r/ %Art/ Set, 42¢-e---
The parameter code for this test if using Daphnia pulex is TAA3D. The parameter code for this test if using
Ceriodaphnia is TAA3B. All toxicity testing results required as part of this permit condition will be entered on the
Effluent Discharge Monitoring Form (MR-1) for the month in which it was performed, using the appropriate
parameter code. Additionally, DEM Form AT-1 (original) is to be sent to the following address:
Attention: Environmental Sciences Branch
North Carolina Division of
Environmental Management
4401 Reedy Creek Road
Raleigh, N.C. 27607
Test data shall be complete and accurate and include all supporting chemical/physical measurements performed in
association with the toxicity tests, as well as all dose/response data. Total residual chlorine of the effluent toxicity
sample must be measured and reported if chlorine is employed for disinfection of the waste stream.
Should any single quarterly monitoring indicate a failure to meet specified limits, then monthly monitoring will
begin immediately until such time that a single test is passed. Upon passing, this monthly test requirement will
revert to quarterly in the months specified above.
Should any test data from either these monitoring requirements or tests performed by the North Carolina Division
of Environmental Management 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 and appropriate environmental controls, shall constitute an invalid test and will require immediate
retesting(within 30 days of initial•monitoring event). Failure to submit suitable test results will constitute
noncompliance with monitoring requirements.
7Q10 cfs
Permitted Flow 3. o MGD
DWC % „
Basin & Sub -basin GPF
Receiving Stream CO* I4t
County NAelierr
Recommended by:
9041,C
Date //0',3
QAL Daphnid 48 Version 10191

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c"-- 7 4 /1&• ?litre 11,;:ftMet 6fii

2. Other pe
,wqilcf col(' •
Compound
ticides (up to 10 highest peaks):
NONE
Detection
Limit Target
(ug/1)
1741 AIM
Concentration
Detected
(Approximate)
(ug/1)
F. Metals and Other Chemicals
Number of Metals and Other Chemicals (as listed below) detected in Sample 9
Fraction STORET Number 78240
GC/MS Confirmation?
Yes/No
STORE?
NUMBER
Compound
1. Pollutants to be analyzed for:
01104
01097
01002
01012
01027
01034
01042
01051
71900
01067
01147
01077
01092
Aluminum
Antimony
Arsenic
Beryllium
Cadmium
Chromium
Copper
Lead
Mercury
Nickel
Selenium
Silver
Zinc
2. Other inorganics:
Detection
Limit Target
(ug/1)
50
50
10
25
2
5
2
10
0.2
10
5
5
Concentration
Detected
(cg/1)
120
BDL
BDL
BDL
6
70
30
BDL
2.2 9
40
BDL
BDL
10
83
01007
00940
00720
00951
Barium
Chloride
Cyanide
Fluoride
500
1000
20
100
BDL
48,200
BDL
570
Page 8 of 9
• • ..}.13.75;.-c?C.;
,/
4.11 4_3
clic( '
CENTRAL Fla,

oq',7 (:(,A2 4Mo
F. Metals and Other Chemicals
Number of Metals and Other Chemicals (as listed below) detected in Sample
Fraction STORET Number 78240
STORET
6
Number
Compound
1. Pollutants to be analyzed for:
0 1 Aluminum
-6777- Antimony
01002 Arsenic
01012 Beryllim
01027 Cadmium
01034 Chromium
01042 Copper
01051 Lead
7T900 Mercury
01067 Nickel
777- Selenium
01077 Silver
01092 Zinc
2. Other Inorganics:
Quantitation
Limit Target
(ug/L)
50
50
1 0
25
2
5
2
1 0
0.2
1 0
5
5
1 0
Quantitation
Limit*
(ug/L)
10**
5**
5,,.
5**
0.5**
5**
2**
5**
0.2
5**
5**
5**
5
Concentration
Detected
(ug/L)
540
BDL
BDL
BDL
BDL
BDL
20
BDL
0.3
BDL
BDL
BOL
26
0JT
Barium
500
100
BDL
00940
Chloride
1000
500
60,400
00720
Cyanide
20
5
BOL
00951
Fluoride
100 -
100
600
** Lowest Quantitation Limit attainable by Graphite Furnace AA. Mercury analyzed by Cold Vapor Method. Zinc and
Barium analyzed by Flame A.A.
BDL = Below Detection Limit
Page 12 of 13

State of North Carolina
Department of Environment, Health and Natural Resources
Division of Environmental Management
512 North Salisbury Street • Raleigh, North Carolina 27626-0535
James G. Martin, Governor George T. Everett, Ph.D.
William W. Cobey, Jr., Secretary Director
October 24, 1991
Mr. Carl G. Dean, City Manager
City of Dunn
Post Office Box 1065
Dunn, North Carolina 28335
Subject: Permit No. NC0043176
Authorization to Construct
City of Dunn
Wastewater Treatment Facility
Harnett County
Dear Mr. Dean:
A letter of request for an Authorization to Construct was received August 12, 1991 by the
Division and final plans and specifications for the subject project have been reviewed and found to
be satisfactory. Authorization is hereby granted for the construction of a 500,000 gallon sludge
holding basin with a 40 Hp floating mixer and two diffused air assemblies, a 600 gpm sludge
transfer pump station with dual pumps to provide the ability to transfer sludge to a tanker truck
(loading pad nest to sludge holding tank) and to recirculate sludge in the sludge holding tank, and
all associated piping, valves, controls and appurtenances with discharge of treated wastewater into
the Cape Fear River, classified Class "WS-III".
This Authorization to Construct is issued in accordance with Part III paragraph C of
NPDES Permit No. NC0043176 issued July 1, 1988, and shall be subject to revocation unless the
wastewater treatment facilities are constructed in accordance with the conditions and limitations
specified in Permit No. NC0043176.
The sludge generated from these treatment facilities must be disposed of in accordance with
G.S. 143-215.1 and in a manner approved by the North Carolina Division of Environmental
Management.
In the event that the facilities fail to perform satisfactorily, including the creation of
nuisance conditions, the Permittee shall take immediate corrective action, including those as may be
required by this Division, such as the construction of additional or replacement wastewater
treatment or disposal facilities.
The Fayetteville Regional Office, phone no. 919/ 486-1541 shall be notified at least
forty-eight (48) hours in advance of operation of the installed facilities so that an in -place
inspection can be made. Such notification to the regional supervisor shall be made during the
normal office hours from 8:00 a.m. until 5:00 p.m. on Monday through Friday, excluding State
Holidays.
Pollution Prevention Pays
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone]
An Equal Opportunity Affirmative Action Employer

Upon completion of construction and prior to operation of this permitted facility, a
certification must be received from a professional engineer certifying that the permitted facility has
been installed in accordance with the NPDES Permit, this Authorization. to Construct and the
approved plans and specifications. Mail the Certification to the Permits and Engineering Unit,
P.O. Box 29535, Raleigh, NC 27626-0535.
Upon classification of the facility by the Certification Commission, the Permittee shall
employ a certified wastewater treatment plant operator to be in responsible charge of the
wastewater treatment facilities. The operator must hold a certificate of the type and grade at least
equivalent to the classification assigned to the wastewater treatment facilities by the Certification
Commission.
A copy of the approved plans and specifications shall be maintained on file by the Permittee
for the life of the facility.
Failure to abide by the requirements contained in this Authorization to Construct may
subject the Permittee to an enforcement action by the Division of Environmental Management in
accordance with North Carolina General Statute 143-215.6A to 143-215.6C.
The issuance of this Authorization to Construct does not preclude the Permittee from
complying with any and all statutes, rules, regulations, or ordinances which may be imposed by
other government agencies (local, state, and federal) which have jurisdiction.
One (1) set of approved plans and specifications is being forwarded to you. If you have
any questions or need additional information, please contact Mr. John Seymour, telephone
number 919/733-5083.
erely,
Qw
eorge T. Ever
cc: Harnett County Health Department
Fayetteville Regional Office
Training and Certification Unit
Facilities Assessment Unit
Davis - Martin - Powell & Associates, Inc.

NPDES DOCUMENT !;CANNIN` 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:
September 6, 1988
This document is printed on reuse paper - ignore any
content on the re' rerse side

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Sk', J ri

Division of Environmental Management
May 27, 1986
Memorandum
To: Steve Tedder
From: Meg Kerr
Subject: Flows on the Cap.e Fear River Postimpoundment
Summary
Flow patterns in the Cape Fear River were severely altered in
1981 with the impoundment of the B. Everette Jordan Lake. Histor-
ical flow records used for low -flow estimation on the system were
no longer valid and the USGS was unable to provide the DEM with
low -flow statistics. Several attempts were made to extrapolate
regulated low flows using natural low flow runoff and the Corps of
Engineer's target flow of 600 cfs at Lillington. These es€imated
low -flows were used to develop wasteload allocations and were used
in toxicity evaluations.
The several years since impoundment now provide us with enough
data to estimate low -flows. These are not 7Q10 estimates but are
rather the average 7 day low flow for the period of record. These
measured low flows are 40-100 cfs less than the 7Q10 flows esti-
mated with 600 cfs at Lillington and natural 7Q10 runoff in the
intervening drainage. Since these flows represent actual condi-
tions in the river, I recommend that they be used for current
wasteload allocations and toxicity screens in the river. The esti-
mates are subject to change, however, and should be recalculated
every several years.
Analysis and Results
The attached table summarizes the pertinent flow statistics
for the Cape Fear River between Jordan Dam and Wilmington. The
drainage areas, average flows, and natural and regulated 7Q10's
were calculated by the USGS. Regulated flows were calculated by
adding natural 7Q10 runoff to the target of 600 cfs at Lillington.
The actual 7Q data -for stations 0210250000 (CFR @ Lillington),
0210550000 (CFR @ Lock #3), and 0210576900 (CFR @ Lock #1) were
developed from the data collected at these gages since 1983. Flows
in 1981 and 1982 were erratic, responding to various operational
experiments at the dam. The derivation of the remaining 7Q esti-
mates is discussed below.
Flows in the Haw River: The 600 cfs target at Lillington is
maintained by balancing flows from the Deep River with releases
from Jordan Dam. When flows from the Deep River are sufficient to

•
meet the 600 cfs target and the Corps needs to increase the volume
of Jordan, flows from the Lake can be held to a minimum. There is
no official minimum release from Jordan. However, the Division of
Water Resources understands that no less than the natural 7Q10
will be allowed in the Haw below the dam. It seems reasonable to
use the natural summer and winter 7Q10 flows for the short stretch
of river between the dam and the confluence of the Haw and the
Deep.
Flows in the Cape Fear above Lillington: The Corps of Engi-
neers has not consistently met the 600 cfs target at Lillington.
In fact, flows have stayed less than 600 cfs for extended periods.
The 30 day average low flow for water year 1984 was 572 cfs, con-
siderably less than the 600 cfs target. It seems reasonable,
therefore to use 560 rather than 600 as the flow at Lillington.
The drainage area at Lillington is 3460 square miles. This means
that at low flow the average yield for the basin is 0.1618
cfs/sq.mi. Flows above Lillington should be calculated by sub-
tracting the drainage area equivalent flow at this yield from 560.
For example, a site 50 sq.mi. above Lillington would have a 7Q10
of 552 cfs or ( 560 - (0.1618) (50)) .
Flows between Lillington and Lock U13: Flows between Lilling-
ton and Lock #3 are highly influenced by Rockfish Creek. Rockfish
Creek drains a portion of the sandhills and has a very high drain-
age area yield of 0.374 cfs/sq.mi. It is important to keep Rock-
fish Creek separate when calculating flows on this portion of the
river. A low -flow yield for the section of the river was calcu-
lated to account for flow from sources other than Rockfish and
Cross Creeks which contributed to the measured 7Q of 819 at Lock
#3.. The resulting yields are 0.120 cfs/sq.mi. in the summer and
0.236 cfs/sq.mi. in the winter. Intervening sites can be evaluated
with these yields.
Flows between Lock #3 and Lock #1: The measured 7Q at Lock #1
was 877 cfs. The drainage area yield between the two locks was
calculated as 0.143 cfs/sq.mi. in the summer and 0.222 cfs/sq.mi.
in the winter. This yield was used to calculate low -flows at Lock
#2.

Flows below Lock #1: Flows on the lower Cape Fear River below
Lock #1 were calculated by adding natural 7Q10 flows to the meas-
ured 877 cfs at the lock. Recent estimate4 for the Black River and
the Northeast Cape Fear River are provided to assist with future
calculations.
Please review these calculations and let me know if
you have any suggestions for improvement. I will begin using the
estimates for the Fayetteville area in the wasteload analyses for
Fayetteville's Cross Creek plant and Monsanto.
cc. Mick Noland
Ken Eagleson
Jay Sauber
,Trevor Clements
Randy Dodd
Carla Sanderson
Dave Vogt
Steve Zoufaly

s
Flows on the Cape Fear River
Pre- and Post Regulation
May 1986
NATURAL
station # station name DA Qavg 7Q10
(SQ. MILES) (CFS) (CFS)
0209819800
0210200000
0210250000
0210399800
0210400000
0210453000'
0210453600
0210550000
0210553600
0210576900
0210721420
0210757600
0210869230
Haw R @ Moncure
Deep R. @ Moncure
CFR @ Lillington
Cross Cr @ mouth
CFR @ Fayetteville
Rockfish Cr @ mouth
CFR bel. Rockfish
CFR @ Lock #3
CFR @ Lock #2
CFR @ Lock #1
Black R. @ Atkinson
CFR @ Navassa
NECFR @ Wilmington
1689
1434
3460
40
4395
310
4730
4850
5016
5255
1239
7060
1670
1550
1453
3360
48
4 700
400
4860
4980
5200
6097
1360
8160
2130
47
22
79
18
260
116
378
388
395
32
600
28
NATURAL REGULATED REGULATED
W7Q10 7Q10 W7Q10
(CFS) (CFS) (CFS)
ACTUAL*
7Q
(CFS)
ACTUAL*
W7Q
(CFS)
157
42.3
185
26
550
170
662
679
691
110
1120
120
47
22
600
18
781
116
899
909
916
32
1121
28
157
42.3
600
26
965
170
1077
1094
1106
110
].535
120
47
22
560
18
685
116
803
819
843
877
32
1082
28
157
42.3
559
26
796
170
968
1000
1037
1090
110
1519
120

NPDES DOCUHENT SCANNIN. COVER SIIEET
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:
April 18, 1988
This document is printed on reuse paper - igriore any
content on the reszerse side

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NCOO 4/7(
FACILITY NAME• e+ �y � nuno
Facility Status:
(circle one)
DUSTING- • PROPOSED
Permit Status: RJ NEWS NODIFICATiON UNPERMrITED NEW
(circle ono)
Major Minor,
Pipe No•
Design Capacity (MGD):
Domestic (% of Flow)' /6
Industrial (% of Flow):
Comments:
RECEIVING STREAM:
Class: 77-==
Sub -Basin• e3- CC -1-3
Reference USGS Quad: r
County:
Regional Office: As Fa = Mo Ra Wa Wi WS
We'd' inn)
1—'4I4' Norr S
Requested By:
Prepared By: ���Y ,� - SCO `L
Reviewed B
(please attach)
Date- Z/zsVig'
Date- 11/6/g�
Date:
y/05-
gt
Modeler
Date Rec.
Drainage Area (mil) '�� �' Avg. Streamflow (cfs): 3GcL
7Q10 (cfs) Winter 7Q10 (cfs) - 30Q2 (cfs)
Toxicity Limits: IWC t % % (circle one) Acute / Chronic
Instream Monitoring:
Parameters
Upstream Location
Downstream Location
Effluent
Characteristics
Summer
Winter
BOD5 (mg/I)
NH; N (mg/1)
D.O. (mg/1)
TSS (mg/1)
30
F. Col. (/100m1)
(000
pH (SU)
6 _c,
LOTTED
Comments•

Request No. :4511
--------------------- WASTELOAD ALLOCATION APPROVAL FORM
Permit Number
Facility Name
Type of Waste
Status
Receiving Stream
Stream Class
Subbasin
County
Regional Office
Requestor
Date of Request
Quad
NC0043176
CITY OF DUNN WWTP
DOMESTIC
EXISTING
CAPE FEAR RIVER
C
030613
HARNETT
FAYETTEVILLE
LULA HARRIS
3-1-88
F 24 SW
Drainage Area
Average Flow
Summer 7010
Winter 7010
30Q2
------------------------- RECOMMENDED EFFLUENT LIMITS
:
Wasteflow (mgd):
5-Day BOD (mg/1):
Ammonia Nitrogen (mg/l):
Dissnlved Oxygen (mg/1).
TSS (mg/l):
Fecal Coliform (#/100m1>:
pH
:
Upstream (Y/N): N
Downstream (Y/N): N
:
:
3.0
30
30
1000
6-9
Location:
Location:
(sq mi)
(cfs)
(cfs)
(cfs)
(cfs)
n �x
�� -
^'
IPA I
�
MONITORING
COMMENTS
T�
/\ �~
u�
Recommended by _/r����.__�1_��UQ____ Date
Reviewed by:
Tech. Support Supervisor _
Regional Supervisor
Permits & Engineering
: 3731.0
: 3601
: 615.2
:
:
Date
Date
Date
RETURN
TO TECHNICAL
SERVICES
By APR 22 1988
,

Facility Name G,
vk/WTp
Permit # NG Do i 7 6
ACUTE TOXICITY TESTING REQUIREMENT (QRTRLY)
Daphnid 48 hr - LC50
The pennittee shall conduct acute toxicity tests on a Quarterly basis using protocols defined in
E.P.A. Document 600/4-85/013 entitled 'The Acute Toxicity of Effluents to Freshwater and
Marine Organisms". The monitoring shall be performed as a paphni4 pulex or Ceriodaphnia
48 hour static test, using effluent collected as a 24 hour composite. The LC50 of this effluent
using the previously stated methodology may not at any time be less than 7S %. Effluent samples
for self -monitoring purposes must be obtained during representative effluent discharge below all
waste treatment. The first test will be performed after thirty days from issuance of this permit
during the months of (*liar Ian See TDec.
The parameter code for this test if using paphniq pulex is TAA3D. The parameter code for this test
if using Ceriodaphnut is TAA3B. All toxicity testing results required as part of this permit
condition will be entered on the Effluent Discharge Monitoring Form (MR-1) for the month in
which it was performed, using the appropriate parameter code. Additionally, DEM Form AT-1
(original) is to be sent to the following address:
Attention: Technical Services Branch
North Carolina Division of
Environmental Management
P.O. Box 27687
Raleigh, N.C. 27611
Test data shall be complete and accurate and include all supporting chemical/physical measurements
performed in association with the toxicity tests, as well as all dose/response data. Total residual
chlorine of the effluent toxicity sample must be measured and reported if chlorine is employed for
disinfection of the waste stream
Should any test data from either these monitoring requirements or tests performed by the North
Carolina Division of Environmental Management 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 and appropriate environmental controls, shall constitute an invalid test
and will require immediate retesting(within 30 days of initial monitoring event). Failure to submit
suitable test results will constitute a failure of permit condition.
7Q10 IS Z cfs
Permitted Flow 3, o MGD Recommended by:
IWC% .7S
Basin & Sub -Basin o 3- I
Receiving Stream cope Fear �; U r /`Mr, Sc. w�c
County HarviDate 3/ig jgs'
**Acute Toxicity(Daphnid 48 hr) LC50 7S %, Mar 3Su4 5 , See Part 3 , Condition l-( ,.

C +7 of Dunh
C L Feo._c ?f i tie
O3 0613
WLA-
wtf11 Li 5}ICAi'I di SC-kAS:oli —_as c1 !AG4h1•.1n,S — Src a(Se 2e9 I R,'vers,4
CUD T14.
c 217
n /
Dom nIOn
nZ
lPorn;n:ory Tsx4clCS + h-'n Elw/1 -
r 2.c MGD Qw= 1.2 MGD
Bops 72-6 BODs = 3a milt
CtoD = 3. 0 x / 2, G „ ZI S r:Dp 4301% - 1. S x 3omJ is
I
NW:0=2enirn x 4.S = 1014
141-13-1,J: S 1,5/1
100D = S x 4.5= 22.5
Er-s-.A , Ri sic C oeosea
Qw = , 040 rnqd.
4S .4. r
_b (Comte rd`/ I npark
1.ISA, ClgCLS(-1 4- 56par04-ell %,4v0/1 Oc4i40,4). aT
11:46-.)('Ie3, E(„J,In f «n') ahZ 70,E or
Tur✓r\ OF -fft ' 1.40Tr qt i tn� of 3g81, ckf_.sr j —
1,owev[f F(a ant./ $Oo Tt. q-.c } • c i�r� �►�ny �/�� 8e
l�c�tx� ► I aru , - -
node — 'p,.nn Meet+ Pack" rs use!
K otrs;lt ?rcSeN11I/ 15. tr•
wl� l��VtfSedt
al+tiovyti .+
.-1Lrc
,n 1S 4�1ce

4 ?.
� fwt✓1- �(Ve_cS:At CA e I (:44 °„a5 LC:fit Ot SS4S3e L CSfc104C-J)
a* 41\ Saner& 4; 0-S /Gtn v�nn 14"TP ,,,,ds fo 6t tc(ntweA,
l7 e -tom
0- ly% `S
a✓1
041 rotel- or\ 0-" raft')c- (4-1 pC St. lac c l� c'es wn1
1
13 ocnn 01/4_7 CQ ne-f(OIS_
14_'on •L Mock(.
61 cal+ dQio, w,4 lA sty - Cr - ,, s4rraol cBocc, Na°D
'DO. was L:�q)-a;l' 5 1-20 ,
rt. Ds = I. 20
CD /155
1413c)1i = I. of
o S
ct op = I. I -
At des,?
C rii etfaT-4^f
7)
UPS t'tM clo,,.. - 560
�7° c_
(-1421o)
i I -ex -f- down o C Ervi: n
L% k ct 5ctut(qt A'L
"JP
er1 J-d ( t:
DU�t g2,2 7
g2,z 7 oZ s4+ 4.ss rn�/1
2,5 MCi 1,2 M6p c- 3,7 I"1cD.
)
cc (G cofnc 63o1 NOD ;

•
= a- (-Bop = ?1s in a * pu,D_
i1
c13oD =
'ys 1"
!.2 Mg()
3.7
NB0D_ = ??� S S M%O + 90
N_3oD _= 4y,
1,2 MGO
Tr;k 7c110 (e5)
'Re a c r 2 1Wach 3- ;Reac1.1 4
7 - -- 1135 3. 1S 1,3
3 .v
5,7 - �i.y 4,1
3.�
14,4 zs,,
7,1 2.2.
57S,0
2.2 _-- 3,V
1' i 0 cic k. W0.5_ _ C u it ,_:,A. e.` S.ckc ce r AI coh 41 414
0JreaA y ex5t-`— 1:rnt43 ) �s gt.-C.v4.6(7 _I M1'iS, 455;M_.(1^.. ttAe.
rIm;) (i_i .);4.f 6._ ;ill f±. _di_
it.) 5 yvto.t. i A.pP 1 o trt -- 5e c 0n,-c+ / `f (c rvvi.' S,
ca P 0. c'-t y --OP Cane Ft'_alr fit_ *S

o>:tc(1/
i S / 1 o - Ccs ((4/ —
1)Litiit.on AcTvr
3,0 Mc,T) X I.SS (i �f
"615,2_ t `I,L5crs , o o75- ar .-15 %
refofej Rqurr
Acu4 J Da�lv�id yK LGSU /�Uarlc`

.4.
X,
Discharger
Receiving Stream
MODEL RESULTS
: CITY OF DUNN WWTP
: CAPE FEAR RIVER
The End D.O. is 7.08 mg/l"
The End CBOD is 3"22 mg/l.
The End NBOD is. 1.76 mg/l.
Segment 1
Reach 1
Reach 2
Reach 3
Reach 4
SUMMER
CITY OF DUNN RENEWAL WLA WITH
UPSTREAM DISCHARGE INTERACTION
WLA WLA WLA
DO Min CBOD NBOD DO Waste Flow
(mg/l) Milepoint Reach # (mg/1) (mg/l) (mg/l) (mgd)
6.48
0.00 1
162.00 44.40 0.00 3.70000
45.00 90.00 0.00 0.09000
45.00 90"00 0.00 8~00000
0.00 0.00 0.00 0.00000

*4 •
Discharger
Receiving Stream
Summer 7010
*** MODEL SUMMARY DATA ***
r CITY OF DUJNh1 WWTP
CAPE FEAR RIVER •
u 560.
Design Temperature: 27.
2l..lbbasa.n N 030613
Stream Class: Cr
Winter 7010
!LENGTH! SLOPE! VELOCITY 1 DEPTHI Kd I Kd I Ka 1 Ka 1 KN I KN I KNR E KNR
1 mile 1 ft/mil fps 1 ft ldesignl 320° !design l 320° ldesignl 320° !design l 120°
1 1 1 I 1 E 1 1 I 1 1 1
Segment 1 1 0.70E 7.10E 1s448 15.11 1 0.35 1 0.25 110.54 1 9,05E 0.51 1 0.30 1 0.51 1 0.00
Reach 1 1 1 1 1 1 I 1 I I 1 1 1
1 1 I 1 1 1 1 1 1 1 1 1
Segment 1 1 1.351 2.20E 1.035 16107 1 0,30 10.22 1 2.33E 2.00E 0.51 1 0.30 1 0.51 1 0.00
Reach 2 1 1 1 E I 1 1 1 I 1 1 1
1 1
Segment 1 1 3.151 2.20E 1.048 16.11 1 0.30 1 0.22 1 2.36 1 2,03E 0.51 1 0.30 1 0.51E 0.00
Reach 3 I 1 1 1 1 1 1 1 I 1 1 1
I 1 I 1• 1 1 1 1 1 E 1 1
Segment 1 I 1.30E 3,50E 1.250 1 5.87 1 0,31E 0.23 1 4.87 1 4.18E 0.51 1 0.30 1 0.51 1 0.00
Reach 4 I 1 I l 1 1 1 1 1 1 1 I
1 Flow 1 (MOD
1 cfs 1 mg/ 1
Segment; :1. Reach 1
Waste I 5.735 1162.000
Headwaters 1560.0c_r0 1 1.800
Tributary 1 0.000 1 2.000
* Runoff i 5.700 1 2.000
Segment 1 Reach • 2
Waste 1 0.139 1 45,000
Tributary 1 0.000 1 P.000
* Runoff 1 4.400 1 2.000
Segment 1 Reach 3
Waste 1 4.650 1 45.000
Tributary 1 0.000 1 2.000
* Runoff 1 4.100 1 2.000
Segment 1 Reach 4
Waste 1 0.000
Tributary 1 51.000
* Runoff 1 3.800
i 0.000
1 2.000
1 2.000
NBOD 1 D.O. 1
mg/1 1 mg/1 1
44.400
1.010
1.000
1.000
90.000 1
1.000 1
1.000 1
1 90.000
1 1.000
1 1.000
0,i=100
1.000
1.000 .1
0.000
6.550
7.170
6.550
0.000
7.170
6.550
0.000
7.170
6.550
0.000
6.750
6.550
* Runoff flow is in cfs/mi 1e

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:
April 25, 1986
This document is printed on reuse paper - ignore any
content on the reirerse side

NPDES WASTE LOAD ALLOCATION
Facility Name: b -P D.
Existing
Proposed O Permit No.: N G D D q 3 / 7(o Pipe No . :
Design Capacity (MGD): 9.0 Industrial (% of Flow):
Engineer
Date Rec. #
3�i /1 . a9G
Date 3-C-8C
00 i County: tioa-R
at
4 Domestic (% of Flow) : / b t
Receiving Stream: ettr- Fear RiV'e-r` Class: L) S emu- Sub -Basin: d4 3-. + /
Reference USGS Quad: F Z'( Si.) (Please attach) Requestor: ��$ a C t tQ_G� Regional Office p 0
(Guideline limitations, if applicable, are to be listed on the back of this form.)
Design Temp.:
•_�
7010 (cfs) ( 1 '=s =�
Drainage Area (mil): 3' "
Winter 7Q10 (cfs)
Location of D.O. minimum (miles below outfall): ()
Velocity (fps): 1.1
K1 (base t', per clay) : 3
Avg. Streamflow (cfs):
30Q2 (cfs)
Slope (fpm) ?.
rfi
K2 (base e. Der day):
Effluent
Characteristics
Monthly
Average
Comments
SC) �
.5 0 r-- /_(
� i 1:1 rvyk-E q /1,30:r..c,„
J43-pC
XY
Fl2ca l C_‹,l: arM1.,
I oc(DA,c-,s-
5 I r)
5:4AP i
Origin
RevisekrAll Gon O
Confirm (
epered By:
oIbnl-'
Comments:
L-8Y
Effluent
Characteristics
;'onthly
l .verage
Comments
Reviewed By:
Date:

Recu est die > 2966
F c:i.:l.it:::: Name
Tvpe Of Waste
et`e:i. iI'i5 Stream
Scream Class
u'.ihbasin
C t:z u n t 's
Re•ienal Office
F:eciuGstor
LIrai.nas;e;' Area (so mi)
7010 (cfs)
Winter 7010 (c_fs)
3002 (cf )
IWastef i ow (meld)
S-••Dav 6OLi (rnjf 1 )
-iH (SU)
Fecal Colifc'rm
TSS (me./1)
!WASTELOALi ALLOCATION APPROVAL F'OF:M
•
•
0
DUNN WWTF
DOMESTIC
CAPE FEAR RIVET;
WSIIT
030613
HARNE:.T.T
FRe
CREE:CH
3731
615,2
RECOMMENDED EFFLUENT LIMITS
3,0
30
1000
30
COMMENTC
MODELED WITH ERWIN AND DUNN MEAT F'r-iCKEF:S,
FACILITY IS d F'ROF'OSED ) EXISTING ( •�i NEW
LIMITS ARE t REVISION ( ) CONFIRMATION (
RECOMMENDED BY:
REVIEWED "k
SSUPERVISOR, TECH. SUPPORT
REGIONAL SUPERVISOR
PERMITS MANAGER
OF THOSE ;PREVIOUSLY ISSui...
7i/(r /6(,
_riF c///i/ff
L3/ic
lit
DATE i ....

D+�
,DA= 3-9-3 c>
CD/3.- 3(00
.4010s= (4
41 1,W.-vim.
Dq = 3 3
3(cUt
-41)to =5, Z
tlzv 5-+
i.3
,LC
LaAire_ (
•g(1,2.105 = (o l 0. 5

+ ii
�fyy
vW„^
caw ,c•
^• .1w.a• Pac .
l.a•w
-r
saittit,,. L c).(P (," 3 J
Q �3 __-0_ Is
,CI>
-.i
16 = J( S
'3 hu
•C2�s 7ZC L-t4,, b - 4ok6,Q b,`I3
3.0
•CQA—t�`-G- 3 CP 0 0 - .5
Z--6)A7'
,
3;o

** ******:* 'MODEL. RESULTS :**** ****%
DISCHARGER : DUNN WW T F'
RECEIVING STREAM :CAPE FEAR RIVER
***********:****** ****************************fit***********:********* *
THE END D+C+ IS 7+12 MG/L
;u,4***:********:****:*****#****:*************************:*********:*********
THE END CBOD IS 3 + 26 MG/L.
***********************************:*******:***************************
THE END NBOD IS 0+00 MG/1_:
*********************************************************************
THE D.O. MIN+ OF SEGMENT 1 IS 6.96 MG/L
THIS MINIMUM IS LOCATED AT SEGMENT MILEPOINT 0
WHICH IS LOCATED ]:N REACH NUMBER 1
THE WLA FOR SEGMENT 1 REACH 1 IS 129 MG/L OF CBOD
THE WLA FOR SEGMENT 1 REACH 1 IS 0 MG/L OF NBOD
THE REQUIRED EFFLUENT D.O. IS 0 MG/L
THE WASTEFLOW ENTERING SEG :1. REACH 1 IS 2,25 MOD
THE WLA FOR SEGMENT 1 REACH 2 IS 129 MG/L OF CBOD
THE WLA FOR SEGMENT 1 REACH 2 IS 0 MG/L OF NBOD
THE REQUIRED EFFLUENT D.O. IS 0 MG/L
THE WASTEFLOW ENTERING SEG 1 REACH 2 :1:S 0.144 MGD
THE WLA FOR SEGMENT 1 REACH 3 IS 129 MG/L.OF CBOD
THE WLA FOR SEGMENT :l REACH 3 IS 0 MG/L OF NBOD
THE REQUIRED EFFLUENT D+0+ IS 0 MG/L
THE WASTEFLOW ENTERING SEG :l REACH 3 IS 3 MOD
''************************************************** *************** :**

r
V** MODEL SUMMARY DATA ***:
DISCHARGER
RECEIVING STREAM
7010
DESIGN TEMPERATURE
SEGMENT 1
REACH 1
DUNN WWTF`
CAFE FEAR RIVER
615.2 CFS
29 DEGREES C.
SUBDA SIN I 030613
STREAM CLASS: WSII
WINTER 7010 o CFS
WASTEFI...OW : 3 MGD
I LENGTH 1 SLOPE 1 VELOCITY !DEPTH 1 Ki 1 K1 1 K2 1 K2 1 Kn 1
!MILES I FT/MI 1 FPS 1 FT 1 /DAY 1 020 1/ DAY 1 @20 1 /DAY 1
SEGMENT 1
REACH 2
1
0.601 6.701
1
1
1.301 3.101
1
SEGMENT 1 1 3.00
REACH 3 1
1.520
1.216
5.21 1 0.61 1 0.40 1 10.90
5+83 1 0.57 ! 0.37 1 4.03
8.96
1
0.001
3.32
0.001
1 1 1 1
2+ 30 1 1.120 1 6.09 1 0.56 1 0.37
1 1 1 1
•
2.76
•
2.27
0.001
1

*:** INPUT DATA SUMMARY ***
FLOW 1 CBOE+ 1 NB0t} 1 D.G.
CFS 1 HG/L 1 MG/L 1 MG/L
-------------
SEGMENT 1 REACH 1 1 1 1 !
WASTE 1 3,486 1129,000 1 0,000 1 0.000
HEADWATERS 1 614.800 1 2.000 1 0.000 1 7.000
TRIBUTARY 1 0,000 1 0.000 I 0.000 1 0.000
RUNOFF * 1 0.330 1 2.000 1 0.000 1 7.000
SEGMENT 1 REACH 2 1
WASTE 1 0.223
TRIBUTARY 1 0,000
RUNOFF * 1 0.150
SEGMENT 1 REACH 3
WASTE
TRIBUTARY
RUNOFF
129.000
0,000
2.000
O.O00
0,000
0.000
4.650 1 129.000
0,000 1 0.000
0.430 1 2.000
0.000
0.000
7.000
0.000
0.000
0.000
0.000
0,000
7.000
* RUNOFF FLOW 15 IN CFS/MILE

J. ♦ . A
!)],CHARGER
RECEIVING STREAM
WASTE]" LGW
♦ Z
,
SEG NO 1 REACH 1 SEG MI 1 DO 1 CBOEI 1 NBQD 1 FLOW 1
1 1 1 1 0.001 6,961 2,721 0.001 618 + 29 1
1 1 1 1 0+201 7,021 2,701 0,001 618+351
1 1 1 1 0.40! 7+071 2+691 0.001 618,421
1 1 1 1 0.601 7+:121 2.68 1 0+001 618,491
1 1 L 1 0,601 7+121 2+721 0,001 618.711
1 1 2 1 0♦801 7.131 2.711 0.001 618.741
1 1 2 1 1.001 7.141 2.691 0.001 618.771
1 1 2 1 1.201 7,151 2.681 0,001 618,801
1 1 2 1 1.401 7.161 2,661 0,001 618.831
1 1 2 1 1.601 7.171 2.651 0+001 618,861
1 1 2 1 1,801 7.181 2,631 0,001 618.891
1 1 3 1 1.801 7,131 3.571 0+001 623+541
1 1 3 1 2.001 7.131 3.551 0.001 623.621
1 1 3 1 2,201 7+131 3.531 0+001 623.711
1 1 3 1 2.401 7,131 3.511 0+001 623+801
1 1 3 1 2.601 7+ 131 3,491 0,001 623,881
1 1 3 1 2.801 7.121 3.471 0.001 623+971
1 1 3 1 3.001 7.121 3+441 0,001 624.051
1 1 3 1 3+201 7,121 3.421 0+001 624,141
1 1 3 1 3.401 7.121 3+401 0,001 624.231
1 1 3 1 3,601 7+121 3+381 0,001 624.311
1 1 3 1 3.80! 7.121 3+361 0.001 624,401
1 ! 3 1 4.001 7. 121 3.341 0,001 624.481
1 1 3 1 4.201 7,121 3+ 32 ! 0.001 624.571
1 1 3 1 4.401 7.121 3.301 0.001 624.661
1 1 3 1 4,601 7.121 3.281 0.001 624.741
1 1 3 1 4.801 7.121 3.261 0.001 624.831
Uza/k1/1.7-k_.7-1,/cv.9p,..1
10+201 +0 .71. if vO.00 ` 61.8+ .., 1

NPDES DOCIMENT SCANNING 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
enstream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
June 3, 1985
This document is printed on reuse paper - ignore any
content on the reYerse side

State of North Carolina
Department of Natural Resources and Community Development
Fayetteville Regional Office
James G. Martin, Governor S. Thomas Rhodes, Secretary
DIVISION OF ENVIRONMENTAL MANAGEMENT
June 3, 1985
MEMORANDUM
TO Meg Kerr, Supervisor
Technical Support Group
FROM : M. J. Noland, Regional Supervisor
Fayetteville Regional Office
SUBJECT: City of Dunn Wastewater Treatment Plant
Instream Assessment
Harnett County
An In -stream Assessment for the City of Dunn for the addition of
230,400 gpd of wastewater from various sources within the town (see attached)
was given a favorable review in a memorandum dated March 1, 1985. The City
of Dunn has recently requested an additional 14,400 gallons per day of domestic
wastewater to serve a 48 unit complex (see attached.)
Please evaluate the additional 14,400 gpd to assure that the quality of
the Cape Fear River will not be impacted.
If we can be of assistance, please advise.
RECEIVED
JUN 4 1985
-ECHNICAL SERVICES BRANCH
Wachovia Building, Suite 714, Fayetteville, NC. 28301-5043Telephone [phone]
An Equal Opportunity Affirmative Action Employer

City of Dunn, North Carolina
Projected Wastewater: Flow. Increases
Dunn Sewer iervi-ce .Area
Jan. 1, 1985- "-thru :Dec. -31, 1986
-Grove :Park Apartments 50 .units
E1oral Gardens & 3'.inewood 50 units
Old Fairgrounds Road ` 50 units
(Adjacent to Meadowlark)
-Total Apartments 150 units @ 300 gpd = 45,000 gal.
2. Single Family Residential:
South Magnolia Lane
e
Ponderosa BcpAnsion
Briarcliff Addition
_Lakeside Addition
Total Lots
3. Mobile Home Park:
50 Lots
50 Lots
36 Lots
32 Lots
168 Lots @ 300 gpd
50,#00::
Holiday Mobile Home Park
_heisting 100 units @ 250 gpd 25,000 gal.
Commercial - Industrial Development:
Harnett ia1= Shopping Center - 10,000 gpd
hversboro Shopping Center - 10,000 �.,d
Johnson-Ti li,.. , '
�-operty
421 .East - 10, 000 gv
Pay Property - 200 Ac - 20,000 gpd
Morganiteoansion - 20,000 gpd
Tarts Truck Stop - 10,000 gpd
Total C/I Development - 80,000 gpd 80,000 gal.
5. Normal in -city growth
50 units per year = 100 units
100 units @ 300 gpd
= 30,000 gpd
Total Potential Growth 1985 thru 1986
= 30,000 Fat.
= 230,h00 gal.

(Mg Of watt
Norti, earolt a 29334
RALPH L. BAREFOOT, MAYOR
ROBERT C.W. NICHOLL, CITY MANAGER
LOUISE A. HUDSON, CITY CLERK
O. HENRY WILLIS, JR.. CITY ATTORNEY
RONNIE AUTRY, PUBLIC WORKS DIRECTOR
COUNCILMEN:
HAROLD BASS
C.W. BRADHAM
DOUGLAS P. OODWIN
STACY G. HAYES
DON MELCHER
ARVLE E. TART
Ms. Kitty Kramer
Fayetteville. Regional Office
Division of Environmental Management
Wachovia Building, Suite 714
Fayetteville, NC 28301
a MAY 23 1985
YENV'e MANAGEMENTPAVILLE REG. ()Ft.'s:"
. ,.
May 20, 1985
Re: Fox Run Associates of Dunn
Dear Ms. Kramer:
Pursuant to our telephone conversation on May 16,. 1985
I am hereby requesting that you include Fox Run Associates of
Dunn on our SOC Permit.
This project consists of 48 units for moderate income persons
consisting of 16 one bedroom, and 32 two bedroom apartments using
a projected wastewater flow of approximately 14,400 gallons
per day.
If I can provide you with any additional information, please
let me know.
RCWN/pa
Robert C. W. Nicholl
City Manager
OFFICES: 401 EAST BROAD STREET, POST OFFICE BOX 101S, DUNN, NORTH CAROLINA UM
TELEPHONES: MANAGER-110-0f2 2Sif. CLERIC - 91 49244R, PUBLIC WORKS - 919492-7f00

DIVISION OF ENVIRONMENTAL MANAGEMENT
March 1, 1985
MEMORANDUM
TO: Mick Noland, Supervisor
Fayetteville Regional Office
FROM: Meg Kerr
SUBJECT: In -Stream Assessment
Town of Dunn, Harnett Co.
Case # EMC WQ 85-05
MAR 5 1985
ENV. MANAGEMENT
FAYETTEVIILE REG. OFFICE
The Town of Dunn has requested permission to increase the flow
from their waste treatment plant. The plant is permitted to discharge
2.275 mgd, presently discharges.2.74 mgd and requests permission to
discharge up to 2.97 mgd. Although the plant has secondary limits,
self -monitoring data show that the plant is meeting 5.8 mg/1 BOD5,
0.6 mg/1 NH3 and 4.4 fecal coliform per 100 ml (monthly average 1/84-
11/84).
Dunn discharges to the Cape Fear River (Class A -II, 7Q10 = 615 cfs).
The additional flow will have no impact on predicted in -stream water
quality if the treatment at the plant remains secondary or better.
Please call if you have any questions.
MK:mlt
cc: Page Benton
Doug Finan

nn_ _5
U 5Q C N tl s not 51/40 /&3
DUan_C✓-c.c.3)
t4J 4/1 0
eopo //-0
a_o ---
o fzm 40
ha
/ 75a,
,a-n-AEO

DISCHARGER
:I:
RECEIVING STREAM
WASTEFLOW
!; rit.tni i :scr
r .Vt.
buJe
1 4E)I G NO 1 PEACH I SEC M:1: 1 17(:) 1 cb0D 1 N8C)C) 1 FLOW
1 1 :1. 0.001 7.1< 1 2.61.1 0.001 618.49
:I. 1 1 0.101 7 .:I.6 1 2.601 0.001 618.50
1. 1 0.201 7.161 2.591 0.001 618.51
1 :1. 0.301 7.161 2.591 0.001 618.52
:l. :l. 0.401 7 .:1. 6 1 ;.?.. 5 E3 1 0.001 618.53
1 1 0.501 7.171 2.571 0.001 61.8.54
1. 1 0.601 7.17: 2.561 0.001 618.55
1 2 0.601 7.161 2.601 0.001 618.78
:1. r 0.701 7.161 2.591 0.001 618.79
1 2 0.801 7.171 2.591 0.001 618.80
1 2 I 0.901 7.171 2.581 0.001 618.81
1 2 1.001 7.171 2.571 0.001 618.82
1 2 1.101 7.171 2.561 0.001 618.88
:I. 2 1 1.. 201 7 .:1.7 1 2 . 5b i 0.001 6:1.f3 . £:34
:I. 2 1.301 7.171 2.551 0.001 618.85
1 2 1 1.401 7.171 2.541 0.001 618.86
I. 2 I 1.501 7.:1.71 2.531 0.001 6:I.8.88
I. 2 1 1.601 7.171 2.531 0.001 618.89
:I. 2 : 1.701 7.181 2.521 0.001 618.90
:I. 2 I 1.801 7.181 2.511 0.001 618.91
:1. 3 1.801 7 . 1.:1.: 3.531 0.001 624.84
:1. 3 1 1.901 7.:I.:I. 1 3.521 0.001 624.86
1 3 I 2.001 7. 1.1. 1 3.511 0.001 624.87
:I. 3 2.101 7.1.1.1 3.501 0.001 624.88
:I. 3 2.201 7.111 3.491 0.001 624.89
:1. 3 1 2.301 7.111 3.481 0.001 624.90
1 2 2.401 7.101 3.471 0.001 624.91
1. 3 2.501 7.101 3.461 0.001 624.92
:1. 3 2.601 7.101 3.451 0.001 624.93
1. J 1 2.701 7.101 3.4.1 0.001 624.94
.1. 3 2.801 7.101 3.431 0.001 624.95
:I. 3 2.9()1 7.101 s3.�1�?1 0.001 624.97
I. 3 3.001 7.101 .411
0.001 62.41 . 98
:1. 3 I 3.101 7.101 3 . 40 1 0.001 624.99
:I. 3 1 3.201 7.101 3.391 0.001 625.00
1 3 3.301 7.101 3.381 0.001 625.01
1 a 1 3.401 7 . 1.0 1 3.371 0.001 625.02
1 3 3.501 7.101 3 . 36 1 0.001 625.03
1 3 3.601 7.101 3.351 0.001 625.04
1 a 3.701 7.101 3.341 0.001 625.05
1 9 3.801 7.101 3.331 0.001 625.06

•
:dunn sac
:cfr
DISCHARGER
RECEIVING STREAM
WASTEFL.OW
1 SEG NO 1 PEACH 1 SEG MI 1 DO 1 CBOD 1 NBOD 1 FLOW
1 1 1 0.001 7.161 2.611 0.001 618.49
1 1 0.101 7.161 2.601 0.001 618.50
:1. 1 1 0.201 7.161 2.591 0.001 618.51
1 1 1 0.301 7.161 2.591 0.001 618.52
1 1. 1 0.401 7.161 2.581 0.001 618.53
1 :I. :I. 0.501 7.171 2.571 0.001 618.54
1 1 0.601 7.171 2.561 0.001 618.55
1 2 0.601 7.161 2.601 0.001 618.78
1 2
0.701 7.161 2.591 0.001 618.79
1 c.. ,1
0.801 7.171 2.591 0.001 618.80
1 2 0.901 7.171 2.581 0.001 618.81
1 2 1.001 7.171 2.571 0.001 618.82
1 2 1.101 7.171 2.561 0.001 618.83
:I. 2 1.201 7.171 2.561 0.001 618.84
1 1 2 1.301 7.171 2.551 0.001 618.85
1 2
1 1.401 7.171 2.541 0.001 618.86
1 2 1 1.501 7.171 2.531 0.001 618.88
1 2 1.601 7.171 2.531 0.001 618.89
1 2 1.701 7.181 2.521 0.001 618.90
1 2 1.801 7.181 2.511 0.001 618.91
1. 3 1 1.801 7.1:11 3.581 0.001 625.11
1 3 1.901 7.101 3.571 0.001 625.12
:1. 3 2.001 7.101 3.561 0.001 625.13
1 3 2.101 7.101 3.551 0.001 625.14
1 3 2.201 7.101 3.541 0.001 625.15
1 3 2.301 7.101 3.531 0.001 625.16
1. 3 2.401 7.101 3.511 0.001 625.17
1 3 2.501 7.101 3.501 0.001 625.19
:I. 3 2.601 7.101 3.491 0.001 625.20
1. 3 2.701 7.101 3.1181 0.001 625.21
1 3 2.801 7.101 3.471 0.001 625.22
1. 3 2.901 7.101 3.461 0.001 625.23
1. 3 3.001 7.101 3.451 0.001 625.24
1 1 a 3.101 7.101 3.441 0.001 625.25
1 3 3.201 7.101 3.431 0.001 625.26
1 3 3.301 7.101 3.421 0.001 625.27
1 3 3.401 7.101 3.411 0.001 625.28
1 3 3.501 7.101 3.401 0.001 625.30
:I. 3 3.601 7.101 3.391 0.001 625.31
1 3 3.701 7.101 3.381 0.001 625.32
1 3 3.801 7.091 3.371 0.001 625.33

3l/ems
tunff) bow Te
50c__ 7t) citiw e-a4 R
6),,0 = a:3g /7-4,,,O ( ,.? .2..9 5)
= Oi So4
-i. 4--0..o = 0?.9 7-0 (7 .2.-j-e
-e/X r s7i +/th- 6oD5 = 5 8"
N1f3 — O, Co
F-Prri = c/c/
//.n, t a/uz 30/30 . 7-A,(4, a_4060/71.0c Lot, ?60-60
60:11 hav-e no i/'Y\paci.

DIVISION OF ENVIRONMENTAL MANAGEMENT
February 12, 1985
MEMORANDUM
TO: Steve Tedder, Supervisor
Technical Services
FROM: M. J. Noland, Regional Supervisor
Fayetteville Regional Office
SUBJECT: Instream Assessment
Town of Dunn Wastewater Treatment Plant
Harnett County
In a letter dated January 24, 1985 (see attached) to M. J. Noland, the
City of Dunn requested that the City be issued an SOC in order to include
an additional 230,400 GPD of wastewater for potential growth in the future.
In order to include 230,400 GPD of additional wastewater flow, an
instream assessment will be necessary. The City of Dunn discharges into
the Cape Fear River, A -II, Cape Fear River Basin. The wastewater treatment
plant is not capable of consistently meeting the flow parameter in the
permit (see attached monthly self -monitoring report). During the term
of the SOC, the City of Dunn will identify and remove I/I sources in order
to comply with the permit flow limitation. The only proposed change in
effluent limits for the SOC will be flow.
Please advise if the proposed 230,400 GPD can be discharged until I/I
improvements are completed by the City of Dunn.
If you have further questions, please advise.
GD/lr '/
Attachments
RECEIVED
FEB 131985
TECHNICAL SERVICES UNIT

-17)
COURiER
February 6, 1985
SUBJECT: . u..-_: -ecommenation
.:asp ::ae: City of Dunn
Case `;u-'�c:: Emerompolip
Lz, .
Please revie7z a_tacr:eci L'^.. . fcr _ a:'T'_F..
re iona- .._ _-ce _`.^o.._.....,.claciC.._ - '='1r a V _ -
. _
_GLC .._ � lc T.- .- __ __LG�..for�
regional testify `_acts -
minisLrat-.- 'ems.: ` :are;.... re'._eT: o_ : =s= facts _s -tcFt
ar' s7cnr re'. .E -
t�: assess -en:.
YOur review should be rete_'i?E:: to this office by-
-�. a,.�'�`�� h.
i1 the z__L- ca.. .::L�r_ =C�_.- peon: p1. E Ca__
L P. Benton, Jr. a: 733-7015 befcre
Document ...._. ;__ena_ t.on
10
F&D ev_e_-.
Admini
SOC
Other:
L_UtI V1 0
n\ \ r-
r.

ff
North Olarn ina 2033
RALPH L. BAREFOOT, MAYOR
ROBERT C.W. NICHOLL, CITY MANAGER
LOUISE A. HUDSON, CITY CLERK
O. HENRY WILLIS, JR., CITY ATTORNEY
RONNIE AUTRY, PUBLIC WORKS DIRECTOR
COUNCILMEN:
HAROLD BASS
C.W. BRADHAM
DOUGLAS P. GODWIN
STACY G. HAYES
DON MELCHER
ARVLE E. TART
ENV. MANAGEMENT OFFICE
ENV. MAN AG:..W. EN T
1i .
f' T .. � �'^� Syr; ^�,
i AYE 1 `EVILLE i� 3. oF[�CE
January 24, 1985
RE: City of Dunn, N.C.
Wastewater Treatment Facilities
Mr. M. J. Noland, Regional Supervisor
Fayetteville Regional Office
Divison of Environmental Management
Wachovia Building, Suite 714
Fayetteville, North Carolina 28301
Dear Mr. Noland:
As we have discussed frequently over the past few months, we have
attempted to project the potential increases in the wastewater flows
likely to occur within the Dunn Service Area over the next two years.
In making these projections, we have attempted to include only those
projects which are in the "talking" or "planning" stages and have,
we feel, a real potential for moving forward into the construction
stages during the next two years. The prospects for all of these
projects to materialize is very remote and total development will
require much longer than the two year projection period however the
City could possibly request permitted extensions with associated
flows of the projected 230,400 gpd within the next two years.
It is our desire that the attached projects will allow you to
process a Departmental SOC and thus allow normal growth and develop-
ment to occur within the City of Dunn while we are in the process
of implementing our planned comprehensive sewer system rehabilitation
program. At the same time, we are requesting that our Engineering
Consultant, Davis -Martin -Powell & Associates proceed with an analysis
of our treatment facility arriving at an increased hydraulic capacity
for use in a repermitting procedure.
If we can provide you with any additional information to assist in
issuing a special order for this Wastewater Treatment Facility,
please let us know.
Ver truly you
at ( z . ��
Ro ert C. W. Nicho l
City Manager
Enclosure
cc: Mayor Barefoot
Davis -Martin -Powell & Associates

City of Dunn, North Carolina
Projected Wastewater Flow Increases
Dunn Sewer Service Area
Jan. 1, 1985 thru Dec. 31, 1986
1. Apartment Projects:
Grove Park Apartments 50 units
Floral Gardens & Pinewood 50 units
Old Fairgrounds Road 50 units
(Adjacent to Meadowlark)
Total Apartments 150 units @ 300 gpd = 45,000 gal.
2. Single Family Residential:
South Magnolia Lane
Ponderosa Expansion
Briarcliff Addition
TA.keside Addition
Total Lots
3. Mobile Home Park:
50 Lots
50 Lots
36 Lots
32 Lots
168 Lots @ 300 gpd = 50,400 gal.
Holiday Mobile Home Park
Existing 100 units @ 250 gpd 25,000 gal.
4. Commercial - Industrial Development:
Harnett Mall Shopping Center
Aversboro Shopping Center
Johnson -Tillman Property
421 East
Pay Property - 200 Ac
Morganite Expansion
Tarts Truck Stop
Total C/I Development
- 10,000
- 10,000
- 10,000 gpd
- 20,000 gpd
- 20,000 gpd
- 10,000 gDd
5. Normal in -city growth
50 units per year = 100 units
100 units @ 300 cud
- 80,000 gpd
= 30,000
Total Potential Growth 1985 thru 1986
80,000 gal.
30,000 gal.
230,400 gal.

NPDES DOCUMENT SCANNING 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:
August 1, 1983
This document is printed on reuse paper - ignore any
content on the reYerse aside

C.,
0
4o
a)
.w
y
.N
Servi• es to Com
Facility Name: _
Existing
Proposed
0
r lye/
NPDES WASTE LOAD ALLOCATION
C.`1 OT 1J W.,1110
Permit No.: A006431 T(p
Pipe No. : ©O
Engineer
Date Rec.
~ #
r .r
Date: �•
County: /41064e (1
Design Capacity (MGD) : Z Industrial (% of Flow) : Domestic (% of Flow) : / 00 o
Receiving Stream:_ !41e Class: "11. Sub -Basin: ©3 `O 4SZP-&0:4
)
Reference USGS Quad:
(Please attach)
Requestor: 0Ye
(Guideline limitations, if applicable, are to be listed on the back of this form)
RegtOMA Office
Of£
Design Temp.: 011 O V Drainage Area: 3 730.E Avg. S treamf low : , 3 600 (`5
7Q10 :. tP 1 5C5 Winter 7Q10: _ 30Q2:
_
Location of D.O.minimum (miles below outfall): Slope:,, .2 d I
Velocity (fps) : - Kl (base e, per day, 200C) : K2 (base e, per day, 20°C) :
Effluent
Characteristics
• Monthly
Average
Comments
boorz-
-r5)
Teicel(J)Ificov'l
So
Original Allocation
Revised Allocation
Confirmation
Prepared By:
Effluent
Characteristics
Monthly
Average
Comments
n eo / o -e.4. because Sao . ..
Date(s) of Revision(s)
(Please attach previous allocation)
4..,(1.A.AN-44...161/4.---./// Reviewed By: i
Date:

REQUEST NO.
561
********************* WASTEL OAU ALLOCATION APPROVAL FORM *********************
FACILITY NAME • DUNN WWTP
TYPE OF WASTE • DOMESTIC
COUNTY HARNETT
REGIONAL OFFICE • FAYETTEVILLE
RECEIVING STREAM • CAPE FEAR RIVER
7010 : 615 CFS W7Q10
DRAINAGE AREA
: 3730 SQ.MI.
CFS
REQUESTOR : DAVE ADKINS
SUBBASIN 030613
3002 CFS
STREAM CLASS :A -II
************************ RECOMMENDED EFFLUENT LIMITS ************************
WASTEFLOW(S) (MGD) 2.275
BOD-5 (MG/L) 30
NH3-N (MG/L)
D.D. (MG/L) S
PH (SU)
FECAL COLIFORM (/100ML): 1000
TSS (MG/L) 30
****************************************************************************i:***
FACILITY IS : PROPOSED
0 D ( tY EXISTING () NEW ( )
LIMITS ARE : REVISION ( ) CONFIRMATION ( 4) OF THOSE PREVIOUSLY ISSUED
REVIEWED AND RECOMMENDED BY:
MODELER . 24
__ _ DATE ; _ _
S F' RVISOF�9MODELING GROUP : _ _ - / - - ___DATE_ : 01
U E _
REGIONAL SUPERVISOR DATE :
PERMITS MANAGER
DATE

i0A,A1 R bfitiva,
may,, J
7/10-(,ly GFs
Dfi _ 373m �,
io
Q 3
1 tt4ii r
0,I
NLdOLI501 ?
-Q..autJ
Lii4A)
✓�h
12.4. Dr0A-205,
•
I,
o Cr1Scfs
2,275
00

a
DISCHARGER
RECEIVING STREAM
7010
DESIGN TEMPERATURE
*** MODEL SUMMARY DATA ***
DUNN WWTP
CAPE FEAR RIVER
615 CFS
29 DEGREES C.
SUBBASIN
STREAM CLASS:
WINTER 7010
WASTEFI.OW
030613
A -II
CFS
2.275 MGD
ILENGTHISLOPE I VELOCITY (DEPTH 1 K1 1 Kr 1 Kn 1 K2 1 Oro 1
MILES I FT/MI 1 FF'S 1 FT 1 /DAY I /(DAY 1 /DAY I /IDAY i CFS/MI I
SEGMENT 1
REACH 1
0.60
1.62 1 5.05 1 0.58 1 0.58 1 0.00 1 3.63 1 0.11
SEGMENT 1
REACH 2
1 1
1.301 2.101
1 1
1.62 1 5.05 1 0.58 1 0.58 1 0.00 1 3.63 1 0.11
SEGMENT 1
REACH 3
1.00
1.62 1 5.06 1 0.58 1 0.58 1 0.00 1 3.65 1 0.11
ALL RATES ARE AT 29 DEGREES C.

*** INPUT DATA SUMMARY ***
FLOW 1 CBOD 1 NBOD 1 D.O.
CFS 1 MG/L 1 MG/L 1 MG/L
SEGMENT 1 REACH 1 1 1 1 I
WASTE 1 3.49 1 110.00 1 0.00 1 0.00
HEADWATERS I 615.00 1 2.00 1 0.00 1 7.00
TRIBUTARY 1 0.00 1 0.00 1 0.00 1 0.00
RUNOFF * 1 0.11 1 2.00 1 0.00 1 7.00
SEGMENT 1 REACH 2
WASTE
TRIBUTARY
RUNOFF *
0.22 1 166.00
0.00 1 0.00
0.11 1 2.00
0.00
0.00
0.00
0.00
0.00
7.00
SEGMENT 1 REACH 3 1 1 1 I
WASTE 1 3.53 1 110.00 1 0.00 1 0.00
TRIBUTARY 1 0.00 1 0,00 1 0.00 1 0.00
RUNOFF * 1 0.11 1 2.00 1 0.00 1 7.00
* RUNOFF FLOW IS IN CFS/MILE

********** MODEL RESULTS **********
DISCHARGER :TOWN OF IUUNN
RECEIVING STREAM :CAFE FEAR RIVER
**********************************************************************
THE END D.O. IS 7.05 MG/L
**********************************************************************
THE END CLOD IS 3.10 MG/L
**********************************************************************
THE END NBOD IS 0.00 MG/L
******************************************************:****************
THE D.O. MIN. OF SEGMENT 1 IS 6.96 MG/L
THIS MINIMUM IS LOCATED AT SEGMENT MILEPOINT 0
WHICH IS LOCATED IN REACH NUMBER 1
THE WLA FOR SEGMENT 1 REACH 1 IS 110 MG/L OF CBOD
THE WLA FOR SEGMENT 1 REACH 1 IS 0 MG/L OF NBOD
THE REQUIRED EFFLUENT D.O. IS 0 MG/L
THE WASTEFLOW ENTERING SEG 1 REACH 1 IS 2.25 MOD
THE WLA FOR SEGMENT 1 REACH 2 IS 166 MG/L OF CBOD
THE WLA FOR SEGMENT 1 REACH 2 IS 0 MG/L OF NBOD
THE REQUIRED EFFLUENT D.O. IS 0 MG/L
THE WASTEFLOW ENTERING SEG 1 REACH 2 IS 0.144 MGD
THE WLA FOR SEGMENT 1 REACH 3 IS 110 MG/L OF CBOD
THE WLA FOR SEGMENT 1 REACH 3 IS 0 MG/L OF NBOD
THE REQUIRED EFFLUENT D.O. IS 0 MG/L
THE WASTEFLOW ENTERING SEG 1 REACH 3 IS 2.275 MGD
*****:****************************************************************

DIVISION OF ENVIRONMENTAL MANAGEMENT
August 11,1978
The Honorable William P. Elmore, Mayor
City of Dunn
P. O. Box 388
Dunn, North Carolina 28334
SUBJECT: Permit No. NC0043176
Authorization to Construct
City of Dunn
EPA Project C 370417
Wastewater Treatment Facilities
Harnett County
:;.Dear Mayor Elmore:
The final plans and specifications for the subject project have been reviewed and
°..found to be satisfactory. Authorization is hereby granted for the construction of
2.275 MOD wastewater treatment facilities consisting of influent screw pumps, bar
.screen, aerated grit chamber, diffused air extended aeration basin, final clarifiers,
sludge pumps, air flotation sludge thickener, digester, sludge drying beds, labora-
r.tory, chlorination, monitoring, auxiliary power supply, effluent pumping station,
effluent force main and gravity type post aeration.
This is a Class III Wastewater Treatment Plant which requires that the operator
in responsible charge must hold a valid Grade III Certificate.
This Authorization to Construct shall be subject to revocation unless the waste -
°water treatment facilities are constructed in accordance with the conditions and
.:=.limitations sp
ecified in Permit No. NC0043176.
One (1) set of approved plans and specifications is being forwarded to you and
one (1) set is being sent to the Environmental Protection Agency. Upon review and
approval of the plans and specifications, the Environmental Protection Agency will,
,advise the City when to advertise for bids to construct this project.
Oriktief ': dYi rs,
A. F. McRORIR
A. F. McRorie
Director
ec: Environmental Protection Agency
Harnett County Health Department
Davis - Martin & Assgciates, Inc.
Mr. Dennis Ramsey
Mr. W. S. Hoffman
Planning and Management Section

NPDES DOCUHENT SCANNING 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:
August 9, 1976
This document is printed on reuse paper - iignore any
content on the reverse side

FOR DATA MANAGEMENT USE ONLY:
FACILITY NO.
/—/ Actual Facility
Proposed Facility
WASTE LOAD ALLOCATION REQUEST
Date of Request / /7/ 7 (O
TO: Mike McGhee, Technical Services Date Needed ///5/1/,
FROM: Ji /"ui//fg i) 5 C f 0
SUBJECT: Effluent Limits for NPDES Permit No.(001 )
Pipe No.(003 )
LSD F
Permit Application Received (8Q2 )
Draft to Public Notice (805 )
Discharger Name (103 )
Tw?) n: (U7,97
County (104 )
/ ?r;leti-
Type (400 )
0 Mu /_%Id
Equiv. Population Served (202 )
I ( o(P�e F t past* Aesent4.
Latitude (115 )
3S° /5 I bd ��
Longitude (116 )
7s° eiri O„
201 Area (263 )
Pc h-7/ - Be�sevi - Er t';
208 Area (264 )
Subbasin(11, )
©.3-a(� -��f
Stream Classification (269 )
(-
Receiving Stream (109 )
Drain. Area(26] )
7/10 Flow(270)
Ratio Waste 7/10 (303 )
Design Capacity (207 ) Design Temperature (NKP)
.f7a s" m6.0
Elevation (NKP)
/3S'
Location Discharger (NKP) i'rincipal
h i ,r.,;. dr U;./.4,4US, ,0,
Product (NKP)
M et.
Sample No.
BOD` (ng/Z)
ecal Cali. Corm (Temperature
100rml 31616
° F 11
DO (mg/Z)
300
41
310
I - Mo. Average Concentration 01
- 5-
zo0boo -....[_\
?0°AS °
670
- Wk. Average Concentration 02
L
J - Minimum Concentration 03
K - Maximum Concentration 04�
'-
`-
v
✓
M - Monthly Average Loading 05
- Weekly Average Loading 06
P - Minimum Loading 07
Q - Maximum Loading 08
T - Frequency of Analysis 09
r
W - Sample Type 10��\
To eci
t• _
NH3-N
(mg/1) 600
p11 (units)
400
TSS ( )
S13 0
I - Mo. Average Concentration 211
-Z
6-4-.
3 a
- Wk. Average Concentration 22,
J - Minimum Concentration 23;
K - Maximum Concentration 24
--
M - Monthly Average Loading 25
- Weekly Average Loading 26
P - Minimum Loading 27
Q - Maximum Loading 28
T - Frequency of Analysis 29
W - Sample Type 30
_
UOD (NKP)

o OtiALAI
LJ
/0 -z dio
yfr
4E7`1__
csk'i
/ Of CnOtOeir
Irg[410 / 010lauf __ . 4 )
/I() e_o_. 0 0 *9 a r 7r °
Poi // 3, 7
(i .,t)(. , 5
i
ri?leDA_)a
gi
/
/

-th- mat, -ekai,&_teA4-
[MAW Edeczt

Effluent BOD ult [mg/l)
ASSIMILATIVE CAPACITY EVALUATION
LEVEL "B" ANALYSIS
SOURCE OF POLLUTION: Tow) OF D owdd
Areawide (208) Planning Area:
Facilities (201) Planning Area:
00
400
*0
300
100 -- _ .
90
80
70
80
50
40
30
201 10
0 I 0 z,o
Design Flow [mgd]
3.b
A. RECEIVING STREAM $LACK
Classification: c -s P
7/10 Flow (cfs) 0.45
B. ASSIMILATIVE CAPACITY DATA
Water Surface Slope (ft/mi)
Stream Velocity (fps)
Stream Depth (ft)
Elevation @ Discharge Pt. (ft)
Drainage Area (sq. mi.)
7/10 Yield (cfsm)
Design Temperature 0C)
Groundwater Runoff cfs/mi)
Deoxygenation Rate Ki Base e)
Reaeration Rate (K2 Base e
Min. Daily Avg. D.O. (mg/1
Upstream Quality -
BODu (mg/1)
D.O. (mg/1)
C. REQUIRED EFFLUENT LIMITS
Design Flow (MGD)
BOD5 (mg/1)
Ammonia Nitrogen mg/1
Dissolved Oxygen mg/1
Total Suspended Solids (mg/1)
Fecal Coliform (#/100 ml)
pH (S.U.)
D. COMMENTS
3 'S.
0.21
©•9
/go
0
26
2.,a
2, 72S
2
0
700
STATE OF NORTH CAROLINA DEPARTMENT OF NATURAL AND ECONOMIC RESOURCES
ORIGINAL
FIRST UPDATE
-1 `16 1 LTDF
PAGE
c-PF►g--dr.-
SECOND UPDATE
THIRD UPDATE