NC0028916_Permit Issuance_20091209

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins
Governor Director
December 9, 2009
Mr. Gray Walls, Public Services Director
Town of Troy
315 N. Main Street
Troy, North Carolina 27371-7841
Subject: Issuance of NPDES Permit
NCO028916
Troy WWTP
Montgomery County
Dear Mr. Walls:
Dee Freeman
Secretary
Division personnel have reviewed and approved your application for renewal of the subject permit. Accordingly, we are forwarding the
attached NPDES discharge permit. This permit is issued pursuant to the requirements of North Carolina General Statute 143-215.1
and the Memorandum of Agreement between North Carolina and the U.S. Environmental Protection Agency dated October 15, 2007
(or as subsequently amended).
This permit contains the following change from the Draft permit mailed to you on August 26, 2009.
• After further review of the Reasonable Potential Analysis (RPA) the 2x I month monitoring requirement for Chloride
has been reinstated in this final permit.
If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable to you, you have the right to
an adjudicatory, hearing upon written request within thirty (30) days following receipt of this letter. This request must be in the form of a
written petition, conforming to Chapter 150E of the North Carolina General Statutes, and filed with the Office of Administrative Hearings
(6714 Mail Service Center, Raleigh, North Carolina 27699-6714). Unless such demand is made, this decision shall be final and
binding.
Please note that this permit is not transferable except after notice to the Division. The Division may require modification or revocation
and reissuance of the permit. This permit does not affect the legal requirements to obtain other permits which may be required by the
Division of Water Quality or permits required by the Division of Land Resources, the Coastal Area Management Act or any other
Federal or Local governmental permit that may be required. If you have any questions concerning this permit, please contact Bob
Guerra at telephone number [phone] or by email at bob.guerra(a)ncdenr.gov.
Sin rely,
7k1 /1.z
H en . Ilins
Enclosure: NPDES Permit NC00'289
cc: Fayetteville Regional Office / Surface Water Protection belinda.hensen(o)ncdenr.gov) (ecopy)
Aquatic Toxicology Unit — Susan Meadows (susan.meadows(a)-ncdenr.gov (ecopy)
EPA Region 4 Marshall Hyatt(hyatt.marshall(cDepamail.epa.gov
NPDES Unit
Central files
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone]FAX: [phone]Customer Service: 1-877-623-6748
Internet: www.ncwaterquality.org
An Equal Opportunity 1 Affirmative Action Employer
One
NoahCarolina
Naturally

Permit NC0028916
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
C 1/
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended,
Town of Troy
is hereby authorized to discharge wastewater from a facility located at the
Troy Wastewater Treatment Plant
Off N CSR 1324
Troy
Montgomery County
to receiving waters designated as Densons Creek in the Yadkin -Pee Dee River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set
forth in Parts I, II, III. and IV hereof.
This permit shall become effective January 1, 2010.
This permit and authorization to discharge shall expire at midnight on June 30, 2014.
Signed this day December 9, 2009.
-Coen H. Sullens, Director
Division of Water Quality
By Authority of the Environmental Management Commission

a
Permit NCO028916
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked. As of this permit issuance, any previously issued permit bearing this number is no longer
effective. Therefore, the exclusive authority to operate and discharge from this facility arises under
the permit. conditions, requirements, terms, and provisions included herein.
Town of Troy is hereby authorized to:
1. Continue to operate an existing 1.2 MGD wastewater treatment plant consisting of the
following treatment components:
♦ Flow equalization
♦ 10-Acre EQ Basin
♦ Mechanically cleaned bar screen
♦ Aerated grit removal system
♦ Influent Parshall Flume with Ultrasonic flow meter
♦ Dual oxidation ditches arranged in series
♦ Dual secondary clarifiers
♦ UV disinfection
♦ Chlorination/dechlorination (back-up)
♦ Sludge transfer tank
♦ Aerobic sludge digester
This facility is located at the Troy Wastewater Treatment Plant, 650 Glen Road, Troy,
Montgomery County.
2. Discharge from said treatment works at the location specified on the attached map into
Densons Creek, classified C waters in the Yadkin -Pee Dee River Basin.

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7
>• a ( s , )1 tt Get rjn. Ya 4'11'Fti�'t
Town of Troy
Facility
Troy WWTP
Location J
{ d_ (t_r]e:
351 22' 37.43" N State Grid: Star
not to scale
Lon itude:
79' 51' 32.45" W Permitted Flow: 1.2 MGD
Receiving Stream:
Densons Creek Sub -Basin: 03-07-15
]� T®j,�7 NPDES Permit No. NCO028916
Drainage Basin:
Yadkin Pee Dee River Basin Stream Class: C
L V i 6 Montgomery County

Permit NC0028916
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of this permit and lasting until expiration, the Permittee is
authorized to discharge from outfall 001. Such discharges shall be limited and monitored by the Permittee as
specified below:
EFFLUENT _ ,.
CHARACTERISTICS'
,,LIMITS,,.
MONITORING REQUIREMENTS .'
hr
Monthly
Average
Weekly .
Average
Daily
:Maximum
Measurement
''-frequency
Sample
T e
:Sample o
" ;-,Location
50050 - Flow
1.2 MGD
Continuous
Recording
I or E
o0010 - Temperature (°C)
Daily
Grab
E
00310 - BOD, 5-day, 200 C
(April 1-October 31)
7.0 mg/L
10.5 mg/L
3/Week
Composite
E,I
00310 - BOD, 5-day, 200 C
(November 1-March 31)
14.0 mg/L
21.0 mg/L
3/Week
Composite
E,I
00530 - Total Suspended
Sond.s2
30.0 mg/L
45.0 mg/L
3/Week
Composite
E,I
00610 - NH3 as N
(April 1 — October 31)
2.0 mg/L
6.0 mg/L
3/Week
Composite
E
00610 - NH3 as N
(November 1 — March 31)
4.0 mg/L
12.0 mg/L
3/Week
Composite
E
00300 - Dissolved Oxygen"'
3/1Neek
Grab
E, U, D
31616 - Fecal Coliform
(geometric mean)
2001100 ml
400/100ml
3/Week
Grab
E
50060 - Total Residual Chlorine
20 pg/L
3/Week
Grab
E
00010 - Temperature (°C)
3/Week
Grab
U,D
00094 - Conductivity
3/Week
Grab
E,U,D
00400 - pH
6.0 — 9.0 Standard Units
3/Week
Grab
E
01092 - Total Zinc
2/Month
Composite
E
01042 - Total Copper
2/Month
Composite
E
00940 - Chloride
2/Month
Composite
E
00600 - Total Nitrogen
(NO2+NO3+TKN)
Monthly
Composite
E
00665 - Total Phosphorus
Monthly
Composite
E
TGP3B - Chronic Toxicity
Quarterly
Composite
E
Pollutant Analysis
Annually
Composite
E
Footnotes:
1. Sample locations: E-Effluent, I -Influent, U-Upstream at least 100 feet, D-Downstream approximately 0.4 miles before the
confluence -with Spencer Branch.
2. The monthly average effluent BOD5 and Total Suspended Solids concentrations shall not exceed 15 percent of the respective
monthly average influent value (85% removal).
3. Stream samples shall be grab samples and shall be collected 3/Week June -September and 1/Week during the remaining months
of the year.
4. The daily average dissolved oxygen concentration in the effluent shall not fall below 5.0 mg/L.
5. TRC monitoring and effluent limitations apply only if chlorine is added to disinfect.
6. Chronic Toxicity (Ceriodaphnia dubia) P/F at 84%: January, April, July, and October (see Part I, A (2.)). Toxicity monitoring shall
coincide with metals monitoring.
7. See Condition A. (3.) of this permit.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

i K
Permit. NCO028916
A. (2.) CHRONIC TOXICITY PERMIT LIMIT (QRTRLY) -1.2 MOD
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant mortality to
Ceriodaphnia dubia at an effluent concentration of 84%.
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in the "North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or subsequent versions or
"North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -February 1998) or
subsequent versions. The tests will be performed during the months of January, April, July and October.
Effluent sampling for this testing shall be performed at the NPDES permitted final effluent discharge below all
treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below the
permit limit, then multiple -concentration testing shall be performed at a minimum, in each of the two
following months as described in "North Carolina Phase II Chronic Whole Effluent Toxicity Test
Procedure" (Revised -February 1998) or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric mean of the highest
concentration having no detectable impairment of reproduction or survival and the lowest concentration that does
have a detectable impairment of reproduction or survival. The definition of "detectable impairment," collection
methods, exposure regimes, and further statistical methods are specified in the "North Carolina Phase II Chronic
Whole Effluent Toxicity Test Procedure" (Revised -February 1998) or subsequent versions.
All toxicity testing results required as part of this.permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the months in which tests were performed, using the parameter code TGP36 for the
pass/fail results and THP36 for the Chronic Value. Additionally, DWQ Form AT-3 (original) is to be sent to the
following address:
Attention: North Carolina Division of Water Quality
Environmental Sciences Section
1621 Mail Service Center -
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section no later than 30
days after the end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements and all
concentration/response data, and be certified by laboratory supervisor and ORC or approved designate
signature. Total residual chlorine of the effluent toxicity sample must be measured and reported if chlorine�is
employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is required, the
permittee will complete the information located at the top of the aquatic toxicity (AT) test form indicating the
facility name, permit number, pipe number, county, and the month/year of the report with the notation of "No
Flow" in the comment area of the form. The report shall be submitted to the Environmental Sciences Section at
the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, monitoring will be
required during the following month.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of Water
Quality indicate potential impacts to the receiving stream, this permit may be re -opened and modified to include
alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival, minimum control organism reproduction, and appropriate environmental controls,
shall constitute an invalid test and will require immediate follow-up testing to be completed no later than
the last day of the month following the month of the initial monitoring.

Permit NCO028916
A. (3.) PRIORITY POLLUTANT ANALYSIS (PPA)
The Permittee shall perform an annual Priority Pollutant Analysis for all parameters listed in the attached table.
The analytical methods shall be in accordance with 40 CFR Part 136 and shall be sufficiently sensitive to
determine whether parameters are present in concentrations greater than applicable standards and criteria.
Samples shall represent seasonal variations. Unless otherwise indicated, metals shall be analyzed as "total -
recoverable."
Ammonia (as N)
Chlorine (total residual,
Dissolved oxygen
Nitrate/Nitrite
Kjeldahl nitrogen
Oil and grease
Phosphorus
Total dissolved solids
Hardness
Antimony
Arsenic
Beryllium
Cadmium
Chromium
Copper
Lead
Trans- 1,2-d ich loroethylene
TRC) 1,1-dichloroethylene
1,2-dichloropropane
1,3-dichloropropylene
Ethylbenzene
Methyl bromide
Methyl chloride
Methylene chloride
1,1,2,2-tetrachloroethane
Tetrachloroethylene
Mercury
Nickel
Selenium
Silver
Thallium
Zinc
Cyanide
Total phenolic compounds
Volatile organic compounds:
Acrolein
Acrylonitrile
Benzene
Bromoform
Carbon tetrachloride
Chlorobenzene
Chlorodibromomethane
Chloroethane
2-chloroethylvinyl ether
Chloroform
Dichlorobromomethane
1,1-dichloroethane
1,2- dichloroethane
Toluene
1.,1,1-trichloroethane
1,1,2-trichloroethane
Trichloroethylene
Vinyl chloride
Acid -extractable compounds
P-chloro-m-cresol
2-chlorophenol
2,4-dichlorophenol
2,4-dimethylphenol
4,6-d initro-o-cresol
2,4-dinitrophenol
2-nitrophenol
4-nitrophenol
Pentachlorophenol
Phenol
2,4,6-trichlorophenol
Base -neutral compounds:
Acenaphthene
Acenaphthylene
Anthracene
Benzidine
Benzo(a)anthracene
Benzo(a)pyrene
3,4 benzofluoranthene
Benzo(ghi)perylene
Benzo(k)fluoranthene
Bis (2-chloroethoxy) methane
Bis (2-chloroethyl) ether
Bis (2-chloroisopropyl) ether
Bis (2-ethylhexyl) phthalate
4-bromophenyl phenyl ether
Butyl benzyl phthalate
2-chloronaphthalene
4-chlorophenyl phenyl ether
Chrysene
Di-n-butyl phthalate
Di-n-octyl phthalate
Dibenzo(a,h)anthracene
1,2-dichlorobenzene
1,3-dichlorobenzene
1,4-dichlorobenzene
3,3-dichlorobenzidine
Diethyl phthalate
Dimethyl phthalate
2,4-dinitrotoluene
2,6-dinitrotoluene
1,2-diphenylhydrazine
Fluoranthene
Fluorene
Hexachlorobenzene
Hexachlorobutadiene
Hexachlorocyclo-pentadiene
Hexachloroethane
I ndeno(1,2,3-cd )pyrene
Isophorone
Naphthalene
Nitrobenzene
N-n itrosodi-n-propylam ine
N-nitrosodimethylamine
N-nitrosodiphenylamine
Phenanthrene
Pyrene
1,2,4-tichlorobenzene
Test results shall be reported to the Division in DWQ Form- A DMR-PPA1 or in a form approved by the
Director, within 90 days of sampling. A copy of the report shall be submitted to the following address:
Division of Water Quality, Water Quality Section, 1617 Mail Service Center, Raleigh, North Carolina
27699-1617

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NCO028916
Facility Information
Applicant/Facility Name:
Town of Troy WWTP
Applicant Address:
444 North Main Street, Troy, NC 27371
Facility Address:
650 Glen Road, Troy, NC
Permitted Flow
1.2 MGD
Typo of Waste:
Domestic and industrial with pretreatment program
Facility/Permit Status:
Class III /Active; Renewal
County:
Montgomery Count
Miscellaneous
Receiving Stream:
Densons Creek
Regional Office:
Fayetteville FRO
Stream Classification:
C
State Grid / USGS Quad:
Star
303 d Listed?
No
Permit Writer:
Bob Guerra
Subbasin:
03-07-15
Date:
August 26, 2009
Drainage Area,(mi`):
32
77
' ?
Lat. 350 22' 25" N Lona. 790 51' 33" W
s7Q10 cfs
0.35
w7Q10 cfs
2.42
Average Flow 'cfs :
32
IWC (%):
84% @ 1.2 MGD
BACKGROUND
The Town of Troy has requested renewal of its NPDES permit NCO028916 which has a design
flow of 1.2 MGD. The plant serves approximately 4,100 persons in the Town of Troy and
discharges into Densons Creek, class C water, in the Yadkin Pee -Dee River Basin. The Town
also has a Water Quality Permit, WQ0001240 which authorizes the Land Application of the
WWTP sludge.
The Town has one non -categorical SIU, Capel Rugs, Inc. which manufactures and dyes
braided rugs. The Town of Troy currently has an active compliant pretreatment program with a
Short Term Monitoring Plan.
RECEIVING STREAM INFORMATION
This facility is located in Subbasin 03-07-15 and discharges to Densons Creek, classified C
waters in the Yadkin Pee -Dee River Basin. The receiving stream is not listed on the 2006
303(d) list as impaired, and the basin plan does not outline any special management strategy
for this creek. Troy is not a member of the Yadkin -Pee Dee River Coalition.
DMR DATA (2004-2009)
DMR data from August 2004 through May 2009 was reviewed. Monthly and weekly averages
for conventional parameters are summarized below.
PERMIT LIMIT COMPLIANCE
The facility has demonstrated consistent compliance in meeting its permit limits and has
received three (3) NOV's in April 2006.
TOXICITY TESTING
Current requirement: Chronic P/F @ 84% 1.2 MGD.
Recommended requirement: Chronic P/F @ 84%.
The facility has been in compliance with its toxicity limit during this permit cycle.
Fact Sheet
NPDES NCO028916 Renewal
Page 1

Effluent Characteristics
Sampling,data reported
Monthly Average
Weekly Average
Flow
0.44 MGD
N/A
Summer BOD, 5-day, 201 C (April 1-
October 31)
2.23 mg/L
2.10 mg/L
Winter BOD, 5-day, 200 C (November
1-March 31)
1.65 mg/L
2.38 mg/L
Total Suspended Solids
4.22 mg/L
4.18 mg/L
Summer NH3 as N (April 1 — October
31)
0.15 mg/L
0.12 mg/L
Winter NH3 as N (November 1 — March
31)
0.13 mg/L
0.14 mg/L
Fecal Coliform (geometric mean)
16.75 #/100ml
22.34 #100/ml
Total Residual Chlorine
Ultra violet disinfection utilized no TRC
sampling required
This facility also collects data for total nitrogen, total phosphorus, temperature (effluent and
Instream) conductivity, pH, dissolved oxygen TRC (when chlorine is utilized for disinfection) and
annual PPA.
CORRESPONDENCE FILES (2004-2009)
The Fayetteville Regional Office (FRO) has conducted five (5) Compliance and five (5) —
Pretreatment inspections since the existing permit was issued on August 1, 2004. These
inspections have found the facility to be in compliance with a few "Areas of Concern" noted.
INSTREAM MONITORING
Upstream Site: At least 100 feet above the outfall; Downstream site: Approx. 0.4 miles before
the confluence with Spencer Branch. A review of instream data showed that DO values are
generally well above the water quality standard of 5 mg/I upstream and downstream of the Troy
WWTP. It is recommended that instream monitoring be continued at the existing frequency.
REASONABLE POTENTIAL ANALYSIS (RPA)
The Division conducted EPA -recommended analyses to determine the reasonable potential for
toxicants to be discharged by this facility, based on DMR and pretreatment data from May 2006
- May 2009. Calculations included parameters listed in the previous permit and pre-treatment
documents to include: arsenic, copper, chlorides and zinc. Results suggest no reasonable
potential for the facility to discharge arsenic at levels greater than the allowable concentration;
however the maximum predicted value is close to the allowable value Chloride. Arsenic
monitoring will be deleted from this permit and monitoring for chloride will remain at 2x/month at
this time. Copper and zinc were predicted at concentrations higher than the allowable; however
these two are action level parameters and limits are not commonly given unless they are
triggered under the Action Level Policy. These will continue to be monitored, but not limited in
the renewal. The facility may require Industrial User to monitor for arsenic through the
Pretreatment Short Term Monitoring Plan (STMP). Facility will continue to monitor Arsenic in
annual PPA. Data from all other toxicants currently monitored through the STMP was examined
and showed no reasonable potential to violate water quality standards. These will continue to
be monitored through the STMP. In addition Priority Pollutant Analysis sampling data from 2004
— 2009 was submitted and reviewed
Fact Sheet
NPDES NCO028916 Renewal
Page 2

SUMMARY OF PROPOSED CHANGES
In keeping with Division policies, the following changes will be incorporated into the permit:
Elimination of the arsenic monitoring requirement.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE
Draft Permit to Public Notice: August 26, 2009
Permit Scheduled to Issue: December 9, 2009
NPDES DIVISION CONTACT
If you have questions regarding any of the above information or on the attached permit, please
contact Bob Guerra at [phone] or by email at bob.guerra a�ncdenr.gov.
NAME: r
r' GG'�f/ �a�/G� DATE:
Regional Office Comments
NAME: DATE:
SUPERVISOR: DATE:
Fact Sheet
NPDES NCO028916 Renewal
Page 3

Guerra, Bob
From: [e-mail]
Sent: Monday, November 02, 2009 12:18 PM
To: Guerra, Bob
Subject: Re: NPDES NCO028916 Troy WWTP
thanks for checking with me. I looked at our tracking database and should have already sent
you a no comment email, but apparently I
didn't. sorry for that confusion.
1

Table 1. Project Information Table 2. ,Parameters of Concern
Name Type Chronic Modifier Acute PQL Units
Facility Name
WWTP Grade
NPDES Permit
Outfall
Flow, Qw (MGD)
Receiving Stream
Stream Class
7Q10s (cfs)
7Q1'Ow (cfs),
30Q2 (cfs)
QA (cfs)
Time Period
Data Source(s)
Town of Troy W WTP
111'
N CO028916
001
1.2
Densens Creek
C
0.4
2.4
6".1
32.0
May 2006 - May 2009
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Par09
Par10
Par11
Par12
Par13
Par14
Par15
Arsenic .
C
50
ug/L
Chloride
NC
250
AL
mg/L
Copper
NC
7
AL,
7.3
ug/L
Zinc
NC
50
AL
67
ug/L
RPA 8-26-09.xls, input
11 /18/2009

REASONABLE POTENTIAL ANALYSIS
Arsenic
Chloride
Data
BDL=1/2DL
Results
Date
Data
BDL=1/20L
Results
if
_Date
Jul-2006
LL
10.01
10.0
Std Dev.
0.0000
1
Jul-2006
118
118.0
Std Dev.
39.5302
1
2a
Aug-2006
10.0
10.0
Mean
10.0000
2
Jul-2006
121
121.0
Mean
120.0014
2
3,
Aug-2006
I
10.01,
10.0
C.V.
0.0000
3
Aug-2006
1 J.
212'
212.0
C.V.
0.3294
3
4!
Sep-2006
i
10i0-
10.0
n
44
4
Aug-2006
165
165.0
n
73
4
5;
Sep-2006
10.0
10.0
5
Sep-2006
ii
187
187.0
5
6
Oct-2006
10.0
10.0
Mult Factor =
1.0000
6
Sep-2006
k; ,
133
133.0
Mult Factor =
1.2800
6
7
Oct-2006'
J
10`0i
10.0
Max. Value
10.0 ug/L
7
Oct-2006
$" i
206
206.0
"Max. Value
212.0 mg/L
7
8'
Nov-2006
10.0i
10.0
Max. Pred Cw
10.0 ug/L
8 $
• Oct-2006
`16Z
162.0
Max. Pred Cw
271.4 mg/L
8
9;
Nov-2006
10.01
10.0
9
Nov=2006
134
134.0
9
101
Dec-2006
10.0i
10.0
10s
Nov2006
r
126
126.0
10
11.
Dec-2006
10.0:
10.0
11
Dec-2006
71
71.3
11
12:
Jan-2007
10.0
10.0
12,
Dec-2006
69
69.2
12
13
Jan-2007
10.0:
10.0
13 �
Jan-2007
t "
41
41.2
13
14'
Feb-2007
10.0;
10.0
141
Jan-2007
101
101.0
14
15'
Feb-2007
10.0:
10.0
15 •
Feb-2007
113
113.0
15
16'
Mar-2007
10.0,
10.0
16!
Feb-2007
f
, 115 ,
115.0
16
17
Mar-2007
10.0:
10.0
17
Mar-2007
333
102 `
102.0
17
18'
Mar-2007
10.0i
10.0
18,
Mar-2007
154
154.0
18
19
Apr-2007
10.0
10.0
19 •
Mar-2007
123
123.0
19
20;
Apr-2007
10.Oi
10.0
20
Apr-2007
&
125 '
125.0
20
21'
May-2007
10.0�
10.0
211
Apr-2007
,Y a
82.4,j
82.4
21
22
_May-2007
10J0;
10.0
221
-May-2007
127:
127.0
22
23
'Jun-2007
10:01
10.0
23,
May-2007
'170 ,
170.0
23
24
Jun-2007
10;0'
10.0
241
Jun-2007
-147
147.0
24
25
Jul-2007
10.0;
10.0
25
Jun-2007
146 j
146.0
25
261
Jul-2007
I
10'.0i
10.0
26:
Jul-2007
117
117.0
26
27
Aug-2007
I
10.0.
10.0
27:
Jul-2007
143.0
143.0
27
28j
Aug-2007
10.0
10.0
28
Aug-2007
'
201'
201.0
28
29,
Sep-2007
10.01
10.0
291".�Aug-2007
""
"138
138.0
29
30;
Sep-2007
10'.0i
10.0
30.
Sep-2007
115 '
115.0
30
31
Oct-2007
10.0'
10.0
31 •
Sep-2007
80
80.3
31
32'
Oct-2007
i
10.0!
10.0
321
Oct-2007
-76
76.0
32
33;
Nov-2007
tg
10.0,
10.0
331
Oct-2007
92
92.0
33
34
Nov-2007
$ !
10.0
10.0
34
Nov-2007
j
67
67.1
34
35 °
Dee-2007
10.0;
10.0
35"
Nov-2007
a
101 ;
101.0
35
36'•
Dec-2007
"
10.0:
10.0
36'
Dec-2007
t ;
104
104.0
36
37,
Jan-2008
j .
10.01
10.0
37,
Dec-2007
96
96.1
37
38 �
Jan-2008
$
10.M
10.0
38'
Jan-2008
77
77.1
38
39;
Jan-2008
j
10.0!
10.0
39
Jan-2008
761
76.1
39
40'
Feb-2008
10.0
10.0
40,
Jan-2008
120
120.0
40
41'
Feb-2008
10.01
10.0
41
Feb-2008
1,19
119.0
41
42,-
Mar-2008
''
10.0
10.0
42,
Feb-2008
50
50.0
42
431,'
Mar-2008
$ ..;
43,
Mar-2008
53
52.8
43_
441
Apr-2008
A
10.01
10.0
44'
Mar-2008
49 '
49.1
44
45
Apr-2008
10:0
10.0
45°
Apr-2008
80
79.8
45
46:
May-2008
46'
Apr-2008
101 '
101.0
46
47
May-2008
47 '
May-2008
71 i
71.4
47
48)
Jun-2008
"
48,
May-2008
108
108.0
48
49'
Jun=2008
i
491
Jun-2008
1'
101
101.0
49
50r"
Jun-2008
�_�
50'
Jun-2008
86
86.4
50
51
Jul-2008
(
51
Jun-2008
.:
100
99.9
51
52
Jul-2008
"E
;
52
Jul-2008
157
157.0
52
53
Aug-2008
i
53•
Jul-2008
170
170.0
53
54i
Aug-2008
1
54
Aug-2008
180
180.0
54
551
Sep-2008
55:
Aug-2008
!
159
159.0
55
56;
Sep-2008
g
i
56;
Sep-2008
$
160 ;
160.0
56
57;
Oct-2008
ri
57
Sep-2008
1251
125.0
57
58, .
Oct-2008
"i•
58 i
Oct-2008
4
132
132.0
58
59'
Nov-2008
ppQ
59
Oct-2008
}..
148
148.0
59
60!
Nov-2008
4
60
Nov-2008
199
199.0
60
#q#
!}
##
199
#p#;
i
##'
200
RPA 8-26-09.xls, data
1 - 11/18/2009

REASONABLE POTENTIAL ANALYSIS
Copper
Zinc
Date
Data
BDL=1/2DL
Results
Date
Data
BDL=1/2DL
Results
Jul 2006°
.
19;
19.0
Std Dev.
7.5745
1j,
Jul 2006
i
75i
75.0
Std Dev. 21.6562
Jul2006
161
16.0
Mean
17.5411
21a
Ju12006
I "
72
72.0
Mean 88.8493
Aug 2006
` p.
9;
9.0
C.V.
0.4318
3:
Aug-2006
81
83.0
C.V. 0.2437
Aug 2006
22.
22.0
n
73
4
Aug-2006
7T
77.0
n 73
Sep-2006
jjj
23
23.0
5:
Se -2006
V
a 841
84.0
Sep-2006
28
28.0
Mult Factor =
1.3800
6t
Sep-2006
}
88:
88.0
Mult Factor = 1.2100
Oct-2006
2T
27.0
Max. Value
46.0 ug/L
7!
Oct-2006
`�
113_
113.0
Max. Value 149.0 ug/L
Oct-2006
19,
19.0
Max. Pred Cw
63.5 ug/L
8;
Oct-2006
83
83.0
Max. Pred Cw 180.3 ug/L
Nov2006
;t
27
27.0
9!
Nov-2006
°"
123
123.0
Nov-2006
21
21.0
10j-
J�f
80
80.0
Dec-2006
,c
5
2.5
11'
,Nov-2006
Dec-2006
128
128.0
Dec 2006
22
22.0
12
Dec-2006
101.
101.0
Jan-2007
18 `
18.0
131
Jan-2007
64:
64.0
Jan-2007
6 '
6.0
14'
Jan-2007
53
53.0
Feb-2007
11
11.0
151
Feb-2007
''
92
92.0
r Feb-2007
14',
14.0
161
Feb-2007
3 Q;
110;
110.0
Mar-2007
7"
7.0
171
Mar-2007
1
79=
79.0
Mar-2007
7
7.0
181
Mar-2007
93
93.0
.Mar-2007
4
4 '
4.0
19;
Mar-2007
74,
74.0
Apr-2007`
12'
12.0
20
Apr-2007
6
85,
85.0
Apr-2007
-, j
9 '
9.0
21 I
Apr=2007
56:
50.0
May-2007
FS
19
19.0
221
'May-2007
98i
98.0
May-2007
24 •
24.0
231
May-2007
92;
92.0
Jun-2007
r °'�
18,
18.0
241
Jun-2007
81':
81.0
Jun-2007
`, ,
11 !
11.0
25=
Jun=2007
, ��'
all
81.0
.Jul-2007
20,
20.0
26
Ju1-2007
74'
74.0
Jul-2007
21F,
21.0
271
Jul-2007
85�
85.0
Aug-2007
20.
20.0
281
Aug-2007
85
85.0
Aug 2007`
23 `
23.0
29
Aug 2007
S
94
94.0
Sep-2007
k,
17,
17.0
301
Sep-2007
�'"
75,
75.0
Sep-2007
21
21.0
311
Sep-2007
D,
97;
97.0
Oct-2007'
.. '
18 '
18.0
32j
Oct-2007
1051
105.0
Oct-2007
i rt=
23. G
23.0
33 °
Oct-2007
''`_
93-
93.0
Nov-2007'
20;
20.0
34,
N6v-2007
"
` 86`
86.0
Nov-2007
;
18-
18.0
35,
Nov-2007
100
100.0
Dec-2007
. 17 `
17.0
36'
Dec-2007
,_ ":
125'
125.0
Dec-2007
11
11.0
37
Dec-2007
75.
75.0
Jan-2008
18
18.0
381
Jan-2008
°��
8&
88.0
Jan-2008
19
19.0
39i
Jan-2008
_
110'
110.0
Jan-2008
17
17.0
401
Jan-2008
o
84,
84.0
Feb-2008
� -
14`:
14.0
411
Feb 2008
',
12&
128.0
Feb-2008
11
11.0
42
Feb2008
113`
113.0
Mar-2008°
, qa
13 -
13.0
43
Mar-2008
121
123.0
Mar-2008
1 ` .
12'
12.0
44
Mar-2008
.��
85,
85.0
�= Apr-2008
t 1
21 +
21.0
45,
Apr-2008
1044'
104.0
Apr-2008
15 J
15.0
46'
Apr-2008
E *
`_83,
83.0
May-2008
29 :
29.0
471
May-2008
n,,85
85.0
May-2008
".
16
16.0
481
May-2008
i
68,
68.0
Jun-2008'
# d
28
28.0
491
Jun-2008
$-
92
92.0
Jun-2008.
S t'
'29'f
29.0
50'`
Jun-2008
72
72.0
Jun-2008
28
28.0
51 C
Jun-2008
"
79
79.0
Jul-2008
`- 1-
29
29.0
52F
Jul-2008
'7
87`
87.0
Ju1-2008
24,
24.0
531,
Jul-2008
13',
13.0
Aug-2008
-46 k,
46.0
54
Aug 2008
g ,
I
114`
114.0
Aug-2008_
31
31.0
55E
Aug 2008
t
86`.
86.0
Sep-2008
12' I
12.0
56!
Sep-2008
'
84
84.0
Sep-2008
13
13.0
57f
Sep-2008
88�
88.0
Oct-2008
�,
26
26.0
58;
Oct 2008
114
114.0
Oct-2008
'
1T;
17.0
59! .
Oct-2008
ti
82;
82.0
Nov-2008
19.
19.0
601
Nov-2008
(
1251
125.0
##I
,
##1
RPA 8-26-09.xls, data
- 2 - 11 /18/2009

REASONABLE POTENTIAL ANALYSIS
Town of Troy WWTP
NCO028916
Time Period May 2006 -,May 2009
Qw (MGD) 1.2
WWTP.Class III
7Q10S (cfs) 0.4
IWC (%) @ 7Q10S 82.301
7Q10W (cfs) 2.4
@ 7Q10W 43.662
30Q2 (cfs) 6.1
@ 30Q2 23.367
Avg. Stream Flow, QA (cfs) 32
@ QA 5.4932
Rec'ving Stream Densens Creek
Stream Class C
Outfall 001
Qw = 1.2 MGD
STANDARDS &
PARAMETER
TYPE
CRITERIA (2)
PQL
Units
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NCWQS/ /,FAV/
n #Det. MaxPredCw AllowableCw
(1)
Chronic Acute
Acute: N/A
Arsenic
C
50
ug/L
44 44
10.0
No RPA exists. Facility requires monitoriong in
PretreatmenYpermit. Sampling is also required in annual
Chronic: 910
PPA. Monitoring requirement will be removed from permit.
Acute: N/A
Chloride
NC
250.0 AL
mg/L
73 73
271.4
---
No RPA exists b an 89% probability or chronic value
is in ' ated. At this time a 2x/month
Chronic: 03bexceedance
monitoring requireme n this permit.
Acute: 7
Copper
NC
7 AL 7.3
ug/L
73 72
63.5
_ _ _ _-
RP exists. Parameter is Action level„continue '2lmonth
Chronic_ 9
w/o limit.
Acute: 67
Zinc
NC
50 AL 67
ug/L
73 73
180.3
RP exists. Parameter is Action level„continue`2/month
_ _ _ _
Chronic_ 61
w/o limit:.` ` °-
* Legend. " Freshwater Discharge
C = Carcinogenic
NC = Non -carcinogenic
A =Aesthetic
RPA 11-23-09.xls, rpa
11 /18/2009

NPDES/Aquifer Protection Permitting Unit Pretreatment Information Request Form
PERMIT WRITER COMPLETES THIS PART:
Date of Request) 8/4/2009
Facility Name Town of Tr(
Permit Number NCO028916
Region FRO
Basin
Check all that
apply
PERMIT WRITERS - AFTER you get this form
back from PERCS:
- Notify PERCS if LTMP/STMP data we said should
be on DMRs is not really there, so we can get it for
you (or NOV POTW).
- Notify PERCS if you want us to keep a specific
POC in LTMP/STMP so you will have data for next
permit renewal.
- Email PERCS draft permit, fact sheet, RPA.
- Send PERCS paper copy of permit (w/o NPDES
boilerplate), cover letter, final fact sheet. Email RPA
if changes.
municipal renewall
x
new industries I
exp.
Speculative limits
stream reclass.
stream relocation
7010 chap a
other
check applicable PERCS staff: utder comments to
1 non -categorical SIU
CTB, CHO, LUM, NEW, ROA - Dana Folle 523
HIW, LTN, NEU, YAD - Monti Hassan 371
BRD, CPF, FRB, TAR - Sarah Morrison (208)
PERCS PRETREATMENT STAFF COMPLETES THIS PART:
Status of Pretreatment Program (check all that apply)
1) facility has no SIU's, does have Division approved Pretreatment Program that is INACTIVE
2) facility has no SIU's, does not have Division approved Pretreatment Program
3) facility has SIUs and DWQ approved Pretreatment Program (list "DEV" if program still under development)
3a) Full Program with LTMP
X 3b) Modified Program with STMP
4) additional conditions regarding Pretreatment attached or listed below STMP time frame:
Most recent:
Flow, MGD Permitted Actual Time eriod for Actual Next Cycle:
Industrial
Uncontrollable n/a
POC in
LTMP/
STF4P
Parameter of
Concern (POC)
Check List
POC due to
NPDES/ Non-
Disch Permit
Limit
Required
b EPA*
Required
by 503
Slud a**
POC due
to SIU***
POTW POC
(Explain
below)"**
STMP
Effluent
Freq
LTMP
Effluent
re
BOD
x
4
QM
TSS
x
4
Q M
NH3
x
4
Q M I
Arsenic
x
4
Q M
�l
Cadmium''
4
Q M
Chromium
4
Q M
Copper
x
4
Q M
Cyanide
x
4
Q M
Lead
l
4
Q M
Mercury
4
Q M
Molybdenum
4
Q M
l
Nickel
4
Q M
Silver
4
Q M
Selenium
4
Q M
�I
Zinc
x
4
Q M
Total Nitrogen
4
Q M
Phosphorus
4
Q M
4
Q M
4
Q M
4
Q M
4
1 Q M
D =Quarterly
y
all data on DI1
YES
NO (attach data)
data in spreadsl
YES (email to writer)
NO
*Always in the LTMP/STMP ** Only in LTMP/STMP if sludge land app or composte (dif POCs for incinerators)
*** Only in LTMP/STMP while SIU still discharges to POTW **** Only in LTMP/STMP when pollutant is still of concern to POTW
Troy PIRF
Revised: July 24, 2007

S I U INFORMATION
SIU Capel, Inc
Program Name Troy
WWTP Name Town of Troy
go to do not type in WWTP Name. complete entry by clicking
on WWTP Name in box to right.
grog
info IUP # 0002
Pipe # 1
IUP Status Active
5 Year Renewal 1 /1 /09
Effective Date
Expiration Date 1/1/14
Flow Limit (mgd) 0.12
SIU 40 CFR Type
Word Description Textile
Notes
Previous Names
CONTACT
INFO
Select Name to view info
David Wright
Max Harris
Enter New Contact
NPDES#.plus.IUPstatus N00028916Active
Date Dropped
0 SEARCH
For New Records, Select
WWTP by clicking below
Town of Troy
Compliance Sched
Schedule Expiration Date
County Montgomery
Region FRO
Basin Number YAD15
Full SIU Record Update
(updated all fields, including
treatment units and contacts)
Update Date
Update Initials-�
NPDES Permit #
NCO028916
Region FRO
SlUserial 1181
cover printed pink
Flo
,Vi
Last Modification Info Central Contact Monti Hassan
Modifier Monti Hassan
ModifierDate 3/9/2009
ModifierTime 10:15:32 AM

The Charlotte Observer Publishing Co.
Charlotte, NC
North Carolina } ss Affidavit of Publication
Mecklenburg County}
THE CHARLOTTE OBSERVER
DINA SPRINKLE
NCDENR/DWQ/POINT SOURCE BRANCH
1617 MAIL SERVICE CENTER
RALEIGH NC 27699
REFERENCE: 30063432
6381152 npdes wastewater per
Before the undersigned, a Notary Public of said
County and State, duly authorized to administer
oaths affirmations, etc., personally appeared,
being duly sworn or affirmed according to law,
doth depose and say that he/she is a
representative of The Charlotte Observer
Publishing Company, a corporation organized and
doing business under the laws of the State of
Delaware, and publishing a newspaper known as The
Charlotte Observer in the city of Charlotte,
County of Mecklenburg, and State of North Carolina
and that as such he/she is familiar with the
books, records, files, and business of said
Corporation and by reference to the files of said
publication, the attached advertisement was
inserted. The following is correctly copied from
the books and files of the aforesaid Corporation
and Publication. I
PUBLISHED ON: 08/29
AD SPACE: 64 LINE
FILED ON: 09/22/09
—"'�— Public Notice
North Carolina Management
ission/NPDES Uni
C
1617 Mail Service Center
Raleigh, NC 27699-1617
Notice of Intent to Issue a NPDES Wastewater Permit
proposes to issue a NPDES wastewater discharge permit to. the
The North Carolina Environmental Management Commission
person(s) listed below. the proposed permit will be
Written comments regarding publish date of this.ma'ce. dhe
accepted until 30 days after the p ubha
Director of the NC Division of Water Quality (DWD) y
public hearing should there be a significant degree of p
interest. Please mail comments andlor information requests to
Rale1 h, NC to review information on
DWQ at the above address. Interested persons may visit the DW
at 512 N. Salisbury Street, g ermits and this notice
file. Adddional information on NPDcW terqual'Ry.org, or by 9
be found on our website: www.
(919) 807-63o4.
The Town of Troy requeos�?e rcounty this permitted discharge
its Troy WWTP in Montgomery Yadkin -Pee Dee River
is treated wastewater to Denson 's Creek,
Basin.
Associated Asphalt requested renewal of permit Nted discharge
or
st,eared industr al wastewaTerminal in ter to Giaan ntsthis
Creek Yadkin dPee--Dee
River Basin,
LP6381152
In Testimony Whereof I have hereunto set my hand and affixed my seal, the
day and ar aforesaid.
Notar `'-Lr�mmission Expires: _/_/_
My Commission Expires May 27, 2011

DIVISION OF WATER QUALITY
January 29, 2009 RECEIVED
MEMORANDUM
TO: Bob Guerra
NPDES Unit
FROM: Dale Lopez, Environmental Specialis
3 0 2009
DENR - WATER OUALITY
POINT
�CE BRANCH
THROUGH: Belinda S. Henson, Regional Supervisor Surface Water P,d1 t*
SUBJECT: Application for NPDES Permit NCO028916
Town of Troy
315 N. Main Street
Troy, NC 27371-2799
Montgomery County
Please find enclosed a staff report and recommendations from the Fayetteville Regional
Office concerning the application for a new NPDES Permit.
If you have any questions or require any further information, please advise.
I
Enclosures

To: Permit and Engineering Unit
Water Quality Section
Attention: Bob Guerra
Date: January 29, 2009
NPDES STAFF REPORT AND RECOMMENDATION
COUNTY: Montgomery
Permit No.: NCO028916
PART 1— GENERAL INFORMATION
1. Facility and Address: Town of Troy Wastewater Treatment Plant
315 N. Main Street
Troy, North Carolina 28916
2. Date of Investigation: January 13, 2009
3. Report Prepared by: Dale Lopez, Environmental Specialist FRO
4. Person Contacted and Telephone Number:
E. Gray Walls [phone]
5. Directions to Site:
From Fayetteville, travel north on Hwy 24/87, turn left onto Hwy 24, travel straight and
join into Hwy 24/27. Travel through Town of Carthage, later through the Town of
Biscoe, and into the Town of Troy. Turn right onto Hwy 134, and travel approximately
two miles, turn right onto Glenn Road (Hwy 1324) and travel approximately two miles,
turn left at the sign that indicates the waste water treatment plant, and travel until you
reach the Waste Water Treatment Plant at Latitude: 35.374430' Longitude: -
79.860192°
6. Discharge Point(s), List for all discharge points:
atitude: 35' 22' 25" Longitude : 79' 51' 33"
Attach a U.S.G.S. map extract and indicate the treatment facility site and the discharge point on
the map.
U.S.G.S. Quad No. V19 NE
U.S.G.S. Quad Name: IStar, N.C.

7. Site size and expansion area consistent with the application?
es
Topography (relationship to the flood plain): Not evaluate
Location of the nearest dwelling: of evaluate
10. Receiving stream or affected surface waters:
a. Classification: Little River Iclass C
b. River Basin No. Pee Dee River 03-07-15 and Sub basin No.: AD15
C. Describe receiving stream features and the pertinent downstream uses:
The discharge from the Troy wastewater treatment facility flows to Densons
Creek (7Q10 of 0.35 cfs flow, as according to the Whole Effluent Toxicity
Testing Self -Monitoring Summary --- see attachment), classified as Class C
waters --- which promotes aquatic life propagation and survival, fishing, wildlife,
secondary recreation, and agriculture. Densons Creek flows into Little River,
and on to the Pee Dee River.
PART H - DISCRIPTION OF WASTES AND TREATMENT WORKS
a. Volume of wastewater to be permitted:
1 2 MGD (Ultimate Design Capacity)
b. What is the current permitted capacity of the Wastewater Treatment facility?
1.2 MGD
C. Actual treatment capacity of the current facility (current design capacity)?
1.2 MGD
d. Please provide a description of the existing or substantially constructed
wastewater treatment taciitty:
Flow enters the headworks of the plant. If the flow is greater than 1.2 MGD, the
excess flow is diverted to a 10-acre lagoon (EQ Basin) and it is later sent back
into the WWTP for treatment. The untreated wastewater normally flows through
a "low flow" type mechanical bar .screen, then to an aerated grit chamber and grit
removal system. The material removed is disposed at the Uharrie Landfill as
needed. An influent Parshall Flume with an ultrasonic flow meter then meters
flow. Flow then travels to the two oxidation ditches arranged series rather than
parallel, then to two secondary clarifiers. The clarifier effluent flows to through
UV disinfection light bank, then to Densons Creek.. All Waste Activated Sludge
solids that are removed from the plant enter a sludge transfer tank, then into an
aerobic digester, and on to land application by Synagrow.
e. Possible toxic impacts to the surface waters:
on

2. Residuals handling and utilizing/disposal scheme:
a. If residuals are being land applied, please specify the DWQ Permit No.
WQ0001240
Residual Contractor: Synagro
[7
c.
f.
Telephone:
Residual stabilization:
Landfill:
[phone]
Other disposal/utilization scheme (specify):
FAll Waste Activated Sludge solids that are removed from the plant enter a sludge
transfer tank, then into an aerobic digester, and on to land application by
Synagrow.
3. Treatment plant classification (attach completed rating sheet): IGrade III (see attachment)
4. Alternative Analysis Evaluation: Has the facility evaluated all of the non -discharge
options available: Please provide the regional perspective for each of the options that
were evaluated.
Connection to Regional Sewer System:
Land Application: one evaluate
Water Reuse: one evaluate

PART IV — EVALUATION AND RECOMMENDATIONS
1. The applicant is not requesting modification of the facility or increasing flow at this time.
2. A review of the compliance data did not reveal any significant violations.
3. Based upon the previous Compliance Evaluation Inspection (CEI) that was conducted on
January 13, 2009, all units were in service, and "this facility continues to maintain a high
standard for wastewater treatment".
4. This Office recommends continuation the Special Conditions for Whole Effluent Toxicity
monitoring and Pretreatment Programs.
Based upon the above information, this Office recommends reissuance of the said permit
for the continued operation of an existing 1.2 MGD wastewater treatment facility
consisting of flow equalization, mechanical bar screen, grit removal, Parshall Flume, dual
oxidation ditches, dual secondary clarifiers, aerobic sludge digester transfer tank and
aerobic digester, UV disinfection, chlorination/dechlorination (back-up) located at the
Town of Troy's wastewater treatment plant on Glenn Road, northeast of Troy in
Montgomery County.

400 KW CATAPILLAR GENERATOR
PROVIDES COMPLETE BACK—UP
FOR ALL PLANT OPERATIONS.
INFLUENT INF
2 MGO GRIT REMOVAL
SPLITTER 1.
BOX ,388 1.5 MGD BAR SCREEN
1.5 MGD
NOT USED
.776
.6 MGD .6 MGD
O
.388
0
J
Ln
2
r-
W
cc I
NOT USED RETURN
.776 DITCHES RUN IN SERIES SLUDGE
PS
1.2 MGD
EFFLUENT o
SPUTTER =3
BOX .194 .194 N
z
r
.388
1.20 MGD .194W4 Cr
ULTRA -VIOLET LIGHT CLARIFIER
.6 MGDUDGEW
2JVI
.388 La I F
N %n
3 _ 3
.040
EFFLUENT DISCHARGE pER0
81C
PT #001 DIGETTER
TO DENSONS
$amp I i ng Poi ntCREEK
s
tO I of I uent
(prior to any side stream)
02 Effluent (after LIV disinfection)
Q Oxidation Ditch
Q4 Sludge to Disposal
— INFLUENT .388
z
0
r U
ar
C 0
x
0
W.S. PS 300 GPM
AEROBIC DIGESTION/
SLUDGE
HOLDING
TANK
1.2 MG
TO LAND APPLICATION
l
TOWN OF TROY
ACTIVATED-SLUDGE/AEROBIC DIGESTION WWTP
PERMIT NO: NCO028916
Figure 1. Facility Diagram
1Facilities Diaaram_dan 12/14/2008 12.48-14 P

TOWN OF TROY
INCORPORATED 1852
Public Services Dept.
315 N. Main Street
Troy, NC 27371-2799
Phone: [phone]
Fax: [phone]
12/20/08
NCDENR/ DWQ
Attn: NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-2941
RECEIVED
DEC 3 0 2008
DENR . WATER OUALIN
POINT SOURCE BRANCH
Please find enclosed the 2009 NCO028916 permit renewal application form.
Should there be questions just give me a call.
Sincerely, // II
4�<�4 6J
E. Gray alls, P.E.
Town Engineer/
Public Services
Director

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INFLUENT
INF
SPLITTER 1 2 MGD GRIT REMOVAL
BOX .388 1.5 MGD BAR SCREEN
- 1.5 MGD
NOT USED
.776
6 MGD .6 MGD
0
400 KW CATAPILLAR GENERATOR
Q �
PROVIDES COMPLETE BACK-UP o 0
FOR ALL PLANT OPERATIONS. o
388
z
0
F- U
_o
x w
O �
2
J
N
z
�
w
NOT USED RETURN
.776 DITCHES RUN IN SERIES SLUDGE
PS
1.2 MGD
EFFLUENT o
SPLITTER
BOX .194 .194 N
z
.388
w
1.20 MGD 194 .194
ULTRA -VIOLET LIGHT CLARIFIER CLARIFIER
.6 MGD 6 MGD
w RETURN SLUDGE w
U C)
2 �
J J
� N
.388
a
N
a
3 3
MO
EFFLUENT DISCHARGE AEROBIC
PT #001 DIGESTER
TO DENSONS
Samp I i ng Points CREEK W.S. PS 300 GPM
Influent
(prior to
any side stream)
Q
Effluent
( after UV disinfection)
DIGESTION/
SLUDGE
(AEROBIC
HOLDING
t'J
Oxidation
Ditch
TANK
1.2 MG
U
Sludge to
Disposal
/
INFLUENT .388
TO LAND APPLICATION
TOWN OF TROY
ACTIVATED SLUDGE/AEROBIC DIGESTION WWTP
3ERM1T NO: NCO028916
Figure 1. Facility Diagram
\Facilities DiagramAgn 12/14/2008 12:46:14