NC0020834_Permit (Issuance)_20100505

NPDES DOCUHENT SCANNING COVER SHEET
NC0020834
Warrenton WWTP
NPDES Permit:
Document Type: '''hermit
Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Compliance
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
May 5, 2010
This document is printed on reuse paper - ignore aizy
content on the re-srer+se side

ATA .
NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Coleen H. Sullins Dee Freeman
Governor Director Secretary
May 5, 2010
Mr. John Freeman, Town Administrator
Town of Warrenton
P. O. Box 281
Warrenton, North Carolina 27589
Subject: Issuance of NPDES Permit NC0020834
Warren County WWTP
Warren County
Dear Mr. Freeman:
The Division of Water Quality (Division) personnel have reviewed and approved your application for
renewal of the subject permit. Accordingly, we are forwarding the _attached NPDES discharge _permit. It 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 final permit includes one significant change from the draft permit sent to you on March 3, 2010.
Quarterly monitoring for cyanide was added. Your March, 2008 sample result (15 pg/L) was above the
freshwater standard for aquatic life, which is 5 jug/L. Additional monitoring was therefore deemed
necessary.
Please be aware that the Division received comments from the North Carolina Wildlife Resources
Commission in reference to your proximity to the Fishing Creek Aquatic Habitat, a significant natural
heritage area. The Commission recommended tighter effluent limits for ammonia. Although your ammonia
limits did not change, the Division is awaiting new ammonia criteria from US EPA, which may affect your
permit limits in the future.
If any parts, measurement frequencies, or sampling requirements contained in this permit are
unacceptable, you have the right to an adjudicatory hearing upon written request within thirty (30) days
after receiving this letter. Your request must take the form of a written petition conforming to Chapter 150B
of the North Carolina General Statutes, and must be filed with the Office of Administrative Hearings, 6714
Mail Service Center, Raleigh, North Carolina 27699-6714. Unless such demand is made, this permit
remains final and binding.
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
4An Equal Opportunity 1 Affirmative Action Employer
NorthCarolina
XaturaUy

This permit is not transferable except after notifying the Division of Water Quality. The Division may modify
and re -issue, or revoke this permit. Please notice that this permit does not affect your legal obligation to
obtain other permits required by the Division of Water Quality, the Division of Land Resources, the Coastal
Area Management Act, or other federal or local governments.
If you have questions, or if we can be of further service, please contact Mr. Gil Vinzani at
[[e-mail] or call [phone].
%st ��oleen H. Sullins
(..t,
/
Enclosure: NPDES Permit FINAL NC0020834
cc: Raleigh Regional Office/Surface Water Protection Section
NPDES Permit File
Central Files
Aquatic Toxicology Unit, Susan Meadows (E-mail copy)
EPA Region 4, Marshall Hyatt (permit and fact sheet, E-mail copy)
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 Al! mat ve Action Employer
One
North Carolina
Naturally •

Permit NC0020834
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended,
Town of Warrenton
is hereby authorized to discharge wastewater from a facility located at the
Warren County Wastewater Treatment Plant
Off US Highway 401
Southwest of Warrenton
Warren County
to receiving waters designated as Fishing Creek in the Tar -Pamlico River Basin
in accordance with effluent limitations, monitoring requirements, and other conditions set forth in
Parts 1, II, III and IV hereof.
This permit shall become effective June 1, 2010.
This permit and authorization to discharge shall expire at midnight on October 31, 2014.
Signed this day May 5, 2010:
leen Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission

• Permit NC0020834
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 Warrenton is hereby authorized to:
1. Continue to operate an existing 2.0 MGD wastewater treatment plant including the following
components:
• Influent pump station
• Mechanically cleaned bar screen
• Vortex grit chamber
• Dual oxidation ditches
• Two secondary clarifiers
• Four tertiary sand filters
• Gas chlorination
• Dechlorination (sulfur dioxide)
• Aerobic digesters
• Cascade post aeration
• Effluent flow measurement
The facility is located off US Highway 401, southwest of Warrenton, Warren County.
2. Discharge from said treatment works at the location specified on the attached map into Fishing
Creek, classified C-NSW, in the Tar -Pamlico River Basin.

Warren County WWTP - NC0020834
USGS Quad Name: Warrenton
Receiving Stream: Fishing Creek
Stream Class: C NSW
Subbasin: Tar Pamlico - 030304
Lat.: 36°22'47"
Long.: 78°10'07"
8-Digit HUC:
03020102
. (Not to Scale)

F _
- Permit NC0020834
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
•.
Monthly
Average
Weekly
Average.
Daily
Maximum
Measuremt.
Frequency
Sample
Type
Sample
-Location
Flow
2.0 MGD
Continuous
Recording
I or E
BOD, 5-day, 202 C z
(April 1 — October 31)
9.0 mg/L
13.5 mg/L
3/Week
Composite
E,I
BOD, 5-day, 202 C 2
(November 1 — March 31)
18.0 mg/L
27.0 mg/L
3/Week
Composite
E,1
Total Suspended Solids 4
30.0 mg/L
45.0 mg/L
3/Week
Composite
E,I
NH3 as N
(April 1 — October 31)
2.0 mg/L
6.0 mg/L
3/Week
Composite
E
NH3 as N
(November 1 — March 31)
4.0 mg/L
12.0 mg/L
3/Week
Composite
E
pH
6.0 — 9.0 standard units
3/Week
Grab
E
Dissolved Oxygen 3
-
3/Week
Grab
E
Dissolved Oxygen
. Variable 4
Grab
U, D
Fecal Coliform (geo. mean)
200/100 ml
400/100mI
3/Week
Grab
E
Fecal Coliform (geo. mean)
Variable 4
Grab
U, D
Total Residual Chlorine
22 pg/L b
3/Week
Grab
E
Temperature (2C)
Daily
Grab
E
Temperature (QC)
Variable 4
Grab
U, D
Total Nitrogen
(NO2+NO3+TKN) 6
Monitor and Report (mg/L)
Weekly
(Calculated)
E
Total Kjeldahl Nitrogen
(TKN)
Monitor and Report (mg/L)
Weekly
Composite
E
Nitrite/Nitrate Nitrogen
(NO2-N+NO3-N) 6
Monitor and Report (mg/L)
Weekly
Composite
E
Total Phosphorus b
Monitor and Report Smg/L)
Weekly
Composite
E
Chronic Toxicity 7
Quarterly
Composite
E
Total Cyanide
Quarterly
Composite
E
Total Copper
Quarterly
Composite
E
Total Zinc
Quarterly
Composite
E
Effluent Pollutant Scan °
Annually
Composite
E
Footnotes:
1. Sample locations: E-Effluent, I -Influent, U-100 feet above the ouffall, D-Downstream at NCSR 1600.
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. The daily average dissolved oxygen concentration in the effluent shall not fall below 5.0 mg/L.
4. Stream samples shall be collected three times per week June 1 through September 30 and once per week
October 1 through May 31. Due to your membership in the Tar -Pamlico Basin Association, instream
monitoring required by this permit is provisionally waived. It will be immediately reinstated should you end
your participation in the Association.
5. The Division shall consider all effluent TRC values reported below 50 pg/L to be in compliance with this
permit. However, you shall continue to record and submit all values reported by a North Carolina certified
laboratory (including field certified), even if these values fall below 50 pg/L.
6. See Special Condition A (3) regarding nutrients.
7. Chronic Toxicity. (Ceriodaphnia) P/F at 76%: March, June, September, and December; see Special
Condition A (2). Toxicity monitoring shall coincide with metals monitoring.
8. See Special Condition A (4) regarding effluent pollutant scan.
There shall be no discharge of floating solids or foam.
•

Permit NC0020834
A (2)-CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or significant
mortality to Ceriodaphnia dubia at an effluent concentration of 76%.
The permit holder shall perform at a minimum, quarterly monitoring using test procedures outlined in
the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or
subsequent versions or "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure"
(Revised -February 1998) or subsequent versions. The tests will be performed during the months of
March, June, September, and December. Effluent sampling for this testing shall be performed at
the NPDES permitted final effluent discharge below all treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV below
the permit limit, then multiple -concentration testing shall be performed at a minimum, in each of the
two following months as described in "North Carolina Phase II Chronic Whole Effluent Toxicity Test
Procedure" (Revised -February 1998) or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric mean of the
highest concentration having no detectable impairment of reproduction or survival and the lowest
concentration that does have a detectable impairment of reproduction or survival. The definition of
"detectable impairment," collection methods, exposure regimes, and further statistical methods are
specified in the "North Carolina Phase II Chronic Whole Effluent Toxicity Test Procedure" (Revised -
February 1998) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the Effluent
Discharge Monitoring Form (MR-1) for the months in which tests were performed, using the
parameter code TGP3B for the pass/fail results and THP3B for the Chronic Value. Additionally,
DWQ Form AT-3 (original) is to be sent to the following address:
Attention: NC DENR / DWQ / Environmental Sciences 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 NC0020834
A (3) NUTRIENT REDUCTION
(1) Point source dischargers in the Tar -Pamlico River Basin are subject to the terms and conditions
of the Tar -Pamlico Nutrient Sensitive Waters Implementation Strategy: Phase 111(the
"Agreement"), agreed to on April 14, 2005; and the nutrient TMDL for the Basin, approved by
the USEPA on August 10, 1995.
(2) The Permittee is a member of the Tar -Pamlico Basin Association, which consists of the
following fifteen facilities:
Membership of Tar -Pamlico Basin Association
Permit
Owner
Facility
NC0030317
City of Rocky Mount
Tar River Regional WWTP
NC0023931
Greenville Utilities Commission
GUC WWTP
NC0020605
Town of Tarboro
Tarboro WWTP
NC0025054
City of Oxford
Oxford WWTP
NC0020648
City of Washington
Washington WWTP
NC0069311
Franklin County
Franklin County WWTP
N00020.834
Town of Warrenton
Warrenton WWTP
NC0026042
Town of Robersonville
Robersonville WWTP
NC0020231
Town of Louisburg
Louisburg WWTP
NC0026492
Town of Belhaven
Belhaven WWTP
NC0025402
Town of Enfield
Enfield WWTP
NC0023337
Town of Scotland Neck
Scotland Neck WWTP
NC0020061
Town of Spring Hope
Spring Hope WWTP
NC0020435
Town of Pinetops
Pinetops WWTP
NC0042269
Town of Bunn
Bunn WWTP
(3) The Agreement defines nitrogen and phosphorus caps for the Association as follows:
Phase III Nutrient Caps - Tar -Pamlico Basin Association'
Total Nitrogen
Total Phosphorus
(Ib/yr)
(kg/yr)
(Ib/yr)
(kg/yr)
891,272
404,274
161,070
73,060
1) Includes allowed adjustment to the 1991 baseline
The Agreement also specifies that the Association has properly accrued and banked nitrogen
offset credits in the following amounts:
Nitrogen Offset Credits - Tar -Pamlico Basin Association
Nitrogen Credits
Timeframe
(lb)
(kg)
Phase I
10,138
4,608
Phase II
30,276
.13,762
Phase III
10,564
4,802

Permit NC0020834
(4) Consistent with TMDL requirements of 40 C.F.R. 122.44(d)(1), 122.44(d)(1)(vii)(A) and (B), and
Section 301(b)(1)(C) of the federal Clean Water Act, the Phase 111 nutrient caps and applied
credits are hereby incorporated into this permit as enforceable limitations on the aggregate
discharge of nitrogen and phosphorus by the Association, as follows:
(5)
Nutrient Load Limits — Tar -Pamlico Basin Association
Total Nitrogen
Total Phosphorus
(Ib/yr)
(kg/yr)
(lb/yr)
(kg/yr)
Nutrient Caps
891,272
404,274
161,070
73,060
Applied Credits
0
0
N/A
N/A
Effective Load
Limits
891,272
404,274
161,070
73,060
In accordance with the terms and conditions of the Phase III Agreement, the Association may
apply additional nitrogen offset credits in anticipation of future exceedances. Application of
credits shall be made through modification of the members' NPDES permits.
(6) The Division reserves the rght to reopen this permit and make appropriate modifications in the
event that:
(7)
a. The current Agreement is revised to add or modify the nutrient caps, reporting requirements,
or other requirements relevant to this permit.
b. The terms of the Agreement are violated, in which case the Division will implement the
strategy in Section X. of the Agreement, Violation of Terms of this Agreement.
c. The Director determines that additional requirements, including effluent limitations, are
necessary to prevent localized adverse impacts to water quality.
No later than March 1 of each year, the Association shall prepare an annual report of its
performance for the previous calendar year to the Division at the following address:
Division of Water Quality, Point Source Branch
Attn: Tar -Pamlico NPDES Coordinator
1617 Mail Service Center
Raleigh, NC 27699-1617
The report shall include each member's monthly mass loadings and the Association's aggregate
annual loadings for Total Nitrogen and Total Phosphorus for the subject calendar year.
A (4) POLLUTANT ANALYSIS
The Permittee shall perform an annual Effluent Pollutant Scan for all parameters listed in the attached
table (in accordance with 40 CFR Part 136). Samples should represent seasonal variations, being
taken at different times in the different years. Unless otherwise indicated, metals shall be analyzed
as "total recoverable."

Ammonia (as N)
Chlorine (total residual, TRC)
Dissolved oxygen
Nitrate/Nitrite
Total Kjeldahl nitrogen
Oil and grease
Total Phosphorus
Total dissolved solids
Hardness
Antimony
Arsenic
Beryllium
Cadmium
Chromium
Copper
Lead
Mercury (Method 1631 E)
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
Trans-1,2-dichloroethylene
1,1-dichloroethylene
'1,2-dichloropropane
1,3-dichloropropylene
Ethylbenzene
Methyl bromide
Methyl chloride
Methylene chloride
1,1,2,2-tetrachloroethane
Tetrachloroethylene
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-dinitro-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
Permit NC0020834
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
Indeno(1,2,3-cd)pyrene
Isophorone
Naphthalene
Nitrobenzene
N-nitrosodi-n-propylamine
N-nitrosodimethylamine
N-nitrosodiphenylamine
Phenanthrene
Pyrene
1,2,4-trichlorobenzene
Test results shall be reported to the Division in DWQ Form- DMR-PPA1 or in a form approved by the
Director, within 90 days of sampling. A copy of the report shall be submitted to Central Files to the
following address: Division of Water Quality, Water Quality Section, 1617 Mail Service Center,
Raleigh, North Carolina 27699-1617. This submittal must also be included with the next permit
renewal application form.

REASONABLE POTENTIAL ANALYSIS
Warrenton WWTP
NC0020834
Time Period 0
Ow (MGD) 2
7010S (cfs) 1
7010W (cfs) 0
3002 (cis) 8.9
Avg. Stream Flow, OA (cfs) 46.7
Rec'ving Stream Example Creek
WWTP Class IV
1WC (%) @ 7Q10S 75.61
® 7010W N/A
3002 25.833
® QA 6.2249
Stream Class C
Outfall 001
Qw = 2 MGD
PARAMETER
TYPE
(1)
STANDARDS &
CRITERIA (2)
PQL
Units
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC WQS/ ff FAy/
Chronk Acute
n • Dot Max Prod Ca. MowtbN Cw
Arsenic
C
50
ug/L
4 0
Note: n<12
Limited data
1.5
set
Acute: N/A
_ _
Chronic: •— 803—•
——•---•—•-------�—�——•-------
Beryllium
C
6.5
ug/L
4 0
Note: n<12
Umited data
1.0
set
Acute: N/A
Chron�: •104--
---•-----•—•---------------------
Cadmium
NC
2 15
ug/L
4 0
Note: n<12
Ltmited data
1.0
set
Acute: 15
Chronic: •-- 3 --
---•---•—•—•-------•—•—•---•---•—
Chromium
NC
50 1,022
ug/L
4 0
Nola: n<12
Limited data
2.5
set
Acute: 1,022
Chronic:- 66 --
—•---•—•—•—•—•—•—•---•— -----•---
Copper
NC
7 AL 7.3
ug/L
17 17
309.5
Acute: 7
RP demonstrated, as action level paramer contineu quarter
sampling _
Cyanide
NC
5 N 22
10
ug/L
4 1
Note: n<12
Limited data
82.5
set
Acute: 22
__
Chronic:_ 7
RP demonstrated by one result over the standard. Will
Include quarterly monitoring
---•—•---•—•-----•—•------- --- —
Fluoride
NC
1,800
ug/L
0 0
N/A
Acute: WA
Lead
NC
25 N 33.8
ug/L
4 0
Note: n<12
Limited data
2.5
set
Acute: 34
Chronb: •—• 33 —
— —•— - —•— —�—•— ——•—�—�— —
Mercury
NC
12
2.0000
ng/L
4 1
Note: n<12
Limited data
1.0000
set
Acute: WA
Chronic: •—• 1fi --
——•-------•---•---•---•--- — —
Molybdenum
A
3,500
ugIL
0 0
N/A
Acute: N/A
_ _ _ _
Chron0: 13,548 -
----•-----------•——__.—.—.---_—
Nickel
NC
88 261
ug/L
1 1
Note: n<12
Umited data
WA
set
Acute: 261
Chronic: �—�116—•
— -—�—•—•—•—•—•—•—•—_—•—�—�—�—•—
Phenols
A
1 N
ug/L
0 0
N/A
Acute: N/A
Selenium
NC
5.0 56
ug/L
4 0
Note: n<12
Limited data
N/A
set
Acute: 56
Chronic: --- 7---
---•-------------------- —___ —_—
Silver
NC
0.06 AL 1.23
ug/L
4 0
Note: n<72
Limited data
2.5
set
Acute: 1
_ _ --- ---
Chronic: 0
--- ---
---------------------------
Zinc
NC
50 AL 67
ug/L
17 17
209.8
Acute: 67
_ _ _
Chronic: —• --
RP demonstrated, as action level paramer conttneu quarter
sampling
--------___________________
Legend::
C = Carcinogenic
NC = Non -carcinogenic
A = Aesthetic
" Freshwater Discharge
Warrenton rpa 20834, rpa
5/4/2010

REASONABLE POTENTIAL ANALYSIS
Arsenic
Beryllium
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
199
200
Date
Data
<
<
T;
=_
='x
Tam
tr
-
„'
,.
tea"
.
.
=
.
a:
`
=
_
+r
`
_
=
,
BDL=1/2DL
3.0 1.5
3.0 15
3.0 1.5
3.0 1.5
Results
Std Dev.
Mean
C.V.
n
Mult Factor =
Max. Value
Max. Pred Cw
0.0000
1.5000
0.0000
4
1.0000
1.5 ug/L
1.5 ug/L
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
199
200
Date
Data
<
<
<
<
`I
BDL=1/2DL
2 1.0
2 1.0
2 1.0
2 1.0
Results
Std Dev.
Mean
C.V.
n
Mult Factor =
Max. Value
Max. Pred Cw
0.0000
1.0000
0.0000
4
1.0000
1.0 ug/L
1.0 ug/L
Warrenton rpa 20834, data
5/4/2010

REASONABLE POTENTIAL ANALYSIS
Cadmium
Chromium
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
199
200
Date
Data
<
<
<
<
BDL=1/2DL
2 1.0
2 1.0
2 1.0
2 1.0
Results
Std Dev.
Mean
C.V.
n
Mult Factor =
Max. Value
Max. Pred Cw
0.0000
1.0000
0.0000
4
1.0000
1.0 ug/L
1.0 ug/L
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
199
200
Date
Data
<
<
<
-< ,.
d
=
.*1
:mow
rry
r: =9
.-a
r...i
t;'
BDL=1/2DL
5 2.5
5 2.5
5 2.5
5 2.5
Results
Std Dev.
Mean
C.V.
n
Mult Factor =
Max. Value
Max. Pred Cw
0.0000
2.5000
0.0000
4
1.0000
2.5 ug/L
2.5 ug/L
-2-
Warrenton rpa 20834, data
5/4/2010

REASONABLE POTENTIAL ANALYSIS
Copper
Cyanide
Date
Data
BDL=1/2DL
Results
Date
Data
BDL=1/2DL
Results
1
11.0
Std Dev.
20.0160
1
<
5
5.0
Std Dev.
5.0000
2
13
13.0
Mean
16.5294
2
<
5
5.0
Mean
7.5000
3
C.V.
1.2109
3
<
5
5.0
C V.
0.6667
4
12
12.0
n
17
4
Mar-2008
;
15
15.0
n
4
5
5
6
I
10.0
Mult Factor=
4.6200
6
-x
Mult Factor=
5.5000
7
60
60.0
Max. Value
67.0 ug/L
7
x`
Max. Value
15.0 ug/L
8
Max. Pred Cw
309.5 ug/L
8
Max. Pred Cw
82.5 ug/L
9
9
10
5
5.0
10
11
67
67.0
11
.
s
12
12
e."a
13
13
14
5
5.0
14
15
14
14.0
15411
16
5
5.0
16
17
i
5
5.0
17
18
5
5.0
18
fn
19
44
44.0
19
-""
20
5
5.0
20
21
5
5.0
21
«;j
22
5
5.0
22
23
23
24
10
10.0
24
25
25
=,=
26
26
41
27
27
28
28
29
29
30
30
31
31
32
32
33
33
34
34
` >4
35
35
36
36
1
37
. _
37
38
38
39
39
r
40
r
40
41
41
42
42
43
43
44
44
`�
45
=_
45
46
46
47
.
47
48
48
49
49
50
fV,5
50
51
51
52
52
53
53
54
54
55
55
56
56
57
57
58
58
59
59
60
60
199
199
200
200
-3-
Warrenton rpa 20834, data
5/4/2010

REASONABLE POTENTIAL ANALYSIS
Fluoride
Lead
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
199
200
Date
Data
BDL=1/2DL
Results
Std Dev.
Mean
C.V.
n
Mult Factor =
Max. Value
Max. Pred Cw
NO DATA
NO DATA
NO DATA
0
N/A
0.0 ug/L
N/A ug/L
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
199
200
Date
Data
<
=
:.
J
`_
'=
-
-
1
5
5
5
5
BDL=1/2DL
2 5
2.5
2.5
2.5
Results
Std Dev.
Mean
C.V.
n
Mult Factor =
Max. Value
Max. Pred Cw
0.0000
2.5000
0.0000
4
1.0000
2.5 ug/L
2.5 ug/L
-4-
Warrenton rpa 20834, data
5/4/2010

REASONABLE POTENTIAL ANALYSIS
Mercury
Molybdenum
Date Data BDL=1/2DL Results
1 1.01 1.0 Std Dev. 0 0000
2 <: 1 1.0 Mean 1.0000
3 <`: 1 1.0 C.V. 0.0000
4 1 1.0 n 4
5
6 Mult Factor =
7 Max. Value
8 Max. Pred Cw
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
199
200
1.00
1.0 ng/L
1.0 ng/L
Date Data BDL=1/2DL Results
1 Std Dev. NO DATA
2 Mean NO DATA
3 C.V. NO DATA
4 n 0
5
6 Mult Factor = N/A
7 Max. Value 0.0 ug/L
8 Max. Pred Cw N/A ug/L
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
199
200
-5-
Warrenton rpa 20834, data
5/4/2010

REASONABLE POTENTIAL ANALYSIS
Selenium
Silver
Date Data
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
199
200
BDL=1/2DL Results
2 #REFI Std Dev. #REFI
2 1.0 Mean #REF!
2 1.0 C.V. #REFI
2 1.0 n 4
Mult Factor = N/A
Max. Value #REF! ug/L
Max. Pred Cw N/A ug/L
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
199
200
Date Data BDL=1/2DL Results
< 5 2.5 Std Dev. 0.0000
< 5 2.5 Mean 2.5000
< 5 2.5 C.V. 0.0000
< 5 2.5 n 4
Mult Factor = 1.0000
Max. Value 2.5 ug/L
Max. Pred Cw 2.5 ug/L
7
Warrenton rpa 20834, data
5/4/2010

REASONABLE POTENTIAL ANALYSIS
Zinc
Date Data
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
199
200
BDL=1/2DL Results
63 63.0 Std Dev 23.1469
59. 59.0 Mean 58.8235
80. 80.0 C.V. 0.3935
32. 32.0 n 17
61. 61.0
73. 73.0 Mult Factor = 1.8400
as. 85.0 Max. Value 114.0 ug/L
40. 40.0 Max. Pred Cw 209.8 ug/L
44. 44.0
59. 59.0
46. 46.0
114. 114.0
42. 42.0
90 90.0
3a. 38.0
43.0
3+. 31.0
-8-
Warrenton rpa 20834, data
5/4/2010

Vinzani, Gil
From: Nisely, Myrl
Sent: Thursday, April 15, 2010 4:23 PM
To: Vinzani, Gil
Cc: Herzberg, Barry
Subject: FW: Warrenton
Attachments: NC0020834 Warrenton WWTP, 03-09.pdf; NC0020834 NCG110087 Warrenton 03-09.doc;
Memo to File 2 5_10.docx
Gil,
The last Warrenton inspection was by Dave Parnell, RRO in March 2009. Letter and inspection checklist are attached. In
addition, a memo to file from a proactive call received from Bill Perkinson, ORC. There was a related newspaper article
that I inserted into our permit file, but I cannot find an electronic version. Can fax it to you if you are interested. Some
of the citizen comments in reaction to the future increase in utility rates were pretty funny.
RRO heartily recommends issuing the draft permit.
Myrl Nisely
Barry, please enter this as a staff report in your Staff Report database. Thanks
From: Parnell, David
Sent: Thursday, April 15, 2010 2:45 PM
To: Nisely, Myrl
Subject: Warrenton
Dave Parnell
Environmental Specialist
NCDENR- Raleigh Regional Office
Surface Water Protection
1628 Mail Service Center
Raleigh, NC 27699-1628
Office [phone]
Fax [phone]
Please note my email address has changed to [e-mail]
E-mail correspondence to and from this address may be subject to the
North Carolina Public Records Law and may be disclosed to third parties.
i

Vinzani, Gil
From: [e-mail]
Sent: Friday, March 12, 2010 12:24 PM
To: Vinzani, Gil
Subject: RE: re NC0020834, Warren Co. WWTP
EPA has no comments on this draft permit.
1

E North Carolina Wildlife Resources Commission
Gordon Myers, Executive Director
MEMORANDUM
TO: Gil Vinzani, Surface Water Protection Section — Point Source Branch
Division of Water Quality
FROM: Shari L. Bryant, Piedmont Region Coordinator --ZILa- - i��. �e
Habitat Conservation Program
DATE: 9 March 2010
SUBJECT: NPDES Permit Renewal for Town of Warrenton, Warren County Wastewater Treatment
Plant, Warren County, NPDES Permit No. NC0020834
Biologists with the North Carolina Wildlife Resources Commission have reviewed the subject
document. Our comments are provided in accordance with provisions of the Clean Water Act of 1977 (as
amended), Fish and Wildlife Coordination Act (48 Stat. 401, as amended; 16 U.S.C. 661-667d), North
Carolina General Statutes (G.S. 113-131 et seq.), and North Carolina Administrative Code 15A NCAC
10I.0102.
The Town of Warrenton has applied for a renewal of its NPDES permit to discharge treated
wastewater into Fishing Creek in the Tar -Pamlico River basin. There are records for the federal and state
endangered Tar spinymussel (Elliptio steinstansana); the federal species of concern and state endangered
Atlantic pigtoe (Fusconaia masoni) and yellow lance (Elliptio lanceolata); the federal species of concern
and state significantly rare pinewoods shiner (Lythrurus matutinus); the state threatened triangle floater
(Alasmidonta undulata), Least brook lamprey (Lampetra aepyptera), and creeper (Strophitus undulatus);
and the state special concern North Carolina spiny crayfish (Orconectes carolinensis), Neuse River
waterdog (Necturus lewisi), and notched rainbow (Villosa constricta) in Fishing Creek. The Significant
Natural Heritage Area — Fishing Creek Aquatic Habitat — is located adjacent to, upstream, and
downstream of the discharge. The public notice indicates BOD, ammonia nitrogen, and total residual
chlorine are water quality limited.
Freshwater mussels are among the most sensitive aquatic organisms tested for impacts from
ammonia, and ammonia may be a significant limiting factor for unionids (Augspurger et al., 2003).
Augspurger et al. (2003) found that ammonia concentrations that may be protective of freshwater mussels
range from 0.3 to 1.0 mg/L total ammonia as N at pH 8.
We are concerned about impacts to Tar spinymussel and other listed aquatic species in Fishing
Creek. Therefore, we offer the following recommendations to reduce impacts to aquatic resources.
Mailing Address: Division of Inland Fisheries • 1721 Mail Service Center • Raleigh, NC 27699-1721
Telephone: [phone] • Fax: [phone]

•
Page 2
9 March 2010
Warren County Wastewater Treatment Plant
NPDES Permit No. NC0020834
1. If the wastewater treatment plant uses chlorine systems for disinfection, these should be replaced
by ultraviolet light or ozone systems. Chlorine is acutely toxic to aquatic organisms and can form
secondary compounds that are detrimental to aquatic life. Valenti (2006) concluded the impact of
long term exposure to low doses of chlorine may impact juvenile mussels and reduce the chance
of them being recruited to the reproducing population.
2. If current ammonia limits exceed those listed above, we recommend a re-evaluation of the
ammonia limits based on the research discussed above and readjusting the limits. Please contact
Tom Augspurger with the U.S. Fish and Wildlife Service at [phone] for additional
information.
3. If not already in place, we suggest the installation of a stand-by power system.
Thank you for the opportunity to comment on this permit renewal. If we can be of further
assistance, please contact our office at [phone].
Literature cited
Augspurger, T., A. E. Keller, M. C. Black, W. G. Cope, and F. J. Dwyer. 2003. Derivation of water
quality guidance for protection of freshwater mussels (Unionidae) from ammonia exposure.
Environmental Toxicology and Chemistry 22(11):2569-2575.
Valenti, T.W., D.S. Cherry, R.J. Currie, R.J. Neves, J.W. Jones, R. Mair, and C.M. Kane. 2006. Chlorine
toxicity to early life stages of freshwater mussels (Bivalvia: Unionidae). Environmental
Toxicology and Chemistry, 25(9):2512-2518.
ec: Rob Nichols, NCWRC

Public Notice
North Carolina Environmental
Management Commission/NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Notice of Intent to Issue a NPDES
Wastewater Permit
The North Carolina Environmental Management Commission
proposes to issue a NPDES wastewater discharge permit to the
person(s) listed below.
Written comments regarding the proposed permit will be
accepted until 30 days after the publish date of this notice. The
Director of the NC Division of Water Quality (DWQ) may hold
a public hearing should there be a significant degree of public
Interest. Please mall comments and/or information requests to
DWQ at the above address. Interested persons may visit the
DWQ at 512 N. Salisbury Street, Raleigh, NC to review information
on file. Additional information on NPDES permits and this notice
may be found on our website: www.ncwaterquality.org, or by
calling [phone].
The Town of Warrenton has requested renewal of NPDES Permit
NC0020834 to discharge treated wastewater to Fishing Creek in
the Tar -Pamlico River Basin.
o` ,E LEE �'tc,o
o
., it1OTk 0
Affidavit of Printer's Proof
NORTH CAROLINA
WARREN COUNTY
I, C .1i 1e, i l l er,
Editor or Office Manager of The Warren
Record, a weekly newspaper publication
in the town of Warrenton, Warren
County, and state of North Carolina, do
so solemnly swear that a legal action
entitled:
. $n4le-P.
a true copy of which is made a part of
this affidavit, did appear in the said The
Warren Record in the following
consecutive issues:
3 J10/ 20
Edito r Office Manager
Sworn to and subscribed before me this
day of mat , 20 IQ .
Notary Public
My commission expires: tca`ta `11 .

Pubila �Notice: • •
Management CammissionlNi DENS -Unit- r'
'1617 Mali rVicerCenter
Rateis(t, NC 27699,16171
.Not of f` I dto ,sire o
,NPR ,, • .
l en hC`.omrnitisstt flnvirmaerilssuee a.
N .DESwastewater rite ,rmittothe'
person(s)listed bet ,
Written com. ents p�rdtn'' the;proposed ;
acce ei! until 30.days after ;
s Mite. The Director
t ere , a
significant' rea�of public�ln%Fest:+Pleose°
mail comments and/or• information regUpsis
to DWQ at.,the . above address. Interested •
-•ppeersons•ritaY visit,;the DCWQ at.512'N. Saiis-
'tr n of ; B Aee ditldhall raiutipnno
••NPDES permitssand.•tills natt - etnoy be
fo bn ateiqubsltl3:. ; . •
ncworeraualttY orgy
eir by acL lnl(lpi{s (9i99rl`e807:6 :
hard
llevipli of NPbES'Pe '4it.N , is-
i- a hargctreated Wa3� ter to Filhins C k
•in the Tar-Pamiloa'�R ier.Baslr1;
iN&O March 4, 2010 ti
AFFIDAVIT OF PUBLICATION
NORTH CAROLINA.
Wake County. ) Ss.
. termit will p1
'the Ubli d f t
aylioid a p. btllc•he
Before the undersigned, a Notary Public of Wake
County North Carolina, duly commissioned and authorized to
administer oaths, affirmations, etc., personally appeared Debra
Peebles, who, being duly swom or affirmed, according to law,
doth depose and say that she is Accounts Receivable Specialist
of The News and Observer a corporation organized and doing
business under the Laws of the State of North Carolina, and
publishing a newspaper known as The News and Observer, in
the City of Raleigh , Wake County and State aforesaid,
the said newspaper in which such notice, paper, document, or
legal advertisement was published was, at the time of each and
every such publication, a newspaper meeting all of the
requirements and qualifications of Section 1-597 of the
General Statutes of North Carolina and was a qualified
newspaper within the meaning of Section 1-597 of the General
Statutes of North Carolina, and that as such she makes this
affidavit; that she is familiar with the books, files and business
of said corporation and by reference to the files of said
publication the attached advertisement for NCDENR/ DWQ/
POINT SOURCE was inserted in the aforesaid newspaper
on dates as follows: 03/04/10
Account Number: 80763040
The above is correctly copied from the books and files of the aforesaid Corporation and publication.
Debra Peebles, Accounts Receivable Specialist
Wake County, North Carolina
Sworn or affirmed to, and subscribed before me, this
05 day of MARCH , 2010 AD by, Debra Peebles
In Testimony Whereof, I have hereunto set my hand
and affixed my official seal, the day and year aforesaid.
#0e
Ti. Winslow, Notary Public
My commission expires 02nd day of June 2013.

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NC0020834
Facility information
Applicant/Facility Name:
Town of Warrenton/Warrenton WWTP
Applicant Address:
P.O. Box 281; Warrenton, North Carolina 27589
Facility Address:
738 US Highway 401 South, Warrenton, North Carolina 27589
Permitted Flow
2.0 MGD
Type of Waste:
Domestic, Light industrial; no pretreatment program
Facility/Permit Status:
Class III /Active; Renewal
County:
Warren County
Miscellaneous
Receiving Stream:
Stream Classification:
Fishing Creek
C NSW
Regional Office:
State Grid / USGS
Quad:
Raleigh (RRO)
B26NW/Warrenton
303(d) Listed?
Subasin:
No
03-03-04
Permit Writer:
Date:
Gil Vinzani
August 12, 2009
Drainage Area (mi`):
51.9
7Q10 (cfs)
30Q2 (cfs)
Average Flow (cfs):
IWC (%):
1
8.9
46.7
76
Lat. 36° 22' 47" N Long. 78° 10' 07" W
Background
The Warrenton WWTP (Class III) has a permitted flow of 2.0 MGD. The current permit expires
October 31, 2009, and the Town of Warrenton submitted an application for renewal in May 4,
2009. This facility receives primarily domestic (with some light industrial) wastewater. It has no
Significant Industrial Users and does not implement a pretreatment program. The facility did not
note any changes to the WWTP in their application.
Warrenton WWTP discharges into Fishing Creek, classified C NSW at this point, in the Tar
Pamlico Basin. A scan of the Basin Plan shows that the receiving waters are not listed as
impaired on the current 303 (d) list.
Since the Town of Warrenton is a member of the Tar Pamlico Nutrient Trading Association,
their permit includes nutrient monitoring without limits. The required special condition language
relating to nutrient reduction has been added to the permit.
DMR Review
DMR effluent data from January 2005 through June 2009 were reviewed. Daily average data
are summarized below:
5- ear
2009
Flow BOD TSS (mg/L) NH3-N TN (mg/L) TP (mg/L)
(MGD) (mg/L) (mg/L)
0.492
0.564
1.87
2.34
3.9
0.7
10.0
13.5
unknown
2.13
* Less than 2 mg/L

Nutrient Controls
History and Status of Nutrient Management Strategy for Point Sources.
On September 12, 1989, the Environmental Managements Commission classified the Tar -
Pamlico River Basin as Nutrient Sensitive Waters (NSW). On February 13, 1992, the
Commission approved a revised NSW Implementation Strategy that established the framework
for a nutrient reduction trading program between point and nonpoint sources of pollution. The
Strategy also established certain conditions to be met by an association of dischargers known
as the Tar -Pamlico Basin Association (the Association). Those conditions are defined in the
Tar -Pamlico Nutrient Sensitive Waters Implementation Strategy (the "Agreement").
The Association agreed to meet specific conditions in order to have the opportunity both to
pursue alternative approaches to managing its nutrient discharges and to reduce nutrient
loading in the most cost-effective manner, including the option to fund agricultural best
management practices (BMPs). These conditions included the development of an estuarine
hydrodynamic computer model, engineering evaluations of wastewater treatment plants, annual
monitoring reports on nutrient loading, and minimum payments for the administration and
implementation of agricultural BMPs. The Association met all conditions established in Phase I.
The Phase I Agreement set collective, technology -based discharge loading limits for the
Association in the form of an annually decreasing, combined nitrogen and phosphorus cap.
During the 1990 to 1991 period, low cost operational changes were implemented at several
facilities to reduce nitrogen loadings. The engineering evaluation of member facilities and
implementation of the study's recommended nutrient removal improvements also yielded
significant loading reductions. These changes, combined with installation of nutrient removal at
several of the larger facilities, allowed the Association to reduce its nutrient loads and stay
beneath its caps throughout Phase I.
The Phase II Agreement spanned ten years from January 1995 through December 2004.
Modeling of the Pamlico River estuary during Phase I provided a foundation for water quality -
based loading goals for Phase II. Based on the estuary modeling, Phase II established overall
performance goals for the nutrient strategy of 30 percent reduction in nitrogen loading from a
baseline year of 1991 and no increase in loading of phosphorus from that baseline. Based on
these goals, it also established nitrogen and phosphorus discharge loading caps for the
Association. These caps also accounted for the load reductions achieved through operational
changes implemented during the 1990/1991 period. The Association stayed beneath both caps
throughout Phase II, steadily reducing its loading of both nutrients despite steady increases in
flow. Overall, from 1990 through 2003, the Association decreased nitrogen loads to the river by
approximately 45% and phosphorus loads by over 60%, while flows increased approximately
30%. The attached table summarizes caps and loads through 2008. The success of this
collective cap approach may be attributed in part to the element of time it provided for individual
facilities to implement nutrient removal as it became most cost-effective for them.
Phase II also established requirements for non -Association point source dischargers and called
for rulemaking to fully enact those requirements. That rulemaking became effective in April
1997. It required new and expanding dischargers over certain sizes to meet effluent
concentration limits and to fully offset new or increased loads using the same offset approach
developed for the Association. During Phase II, there were no new dischargers to the basin,
and no existing dischargers became subject to the rule's requirements.
Phase II also established instream nutrient goals for nonpoint sources and called for a separate
nonpoint source (NPS) strategy. These were used to establish a nutrient TMDL, which was
approved by the USEPA on August 10, 1995.
Fact Shot
N PI)ES NCO02OS ;4. IZ; nc\vai
Page 2

The NPS strategy was put into effect in January 1996 as a voluntary effort that would work from
existing programs, seeking additional funds and developing accounting tools. After two years of
voluntary implementation, the EMC found progress insufficient and initiated nonpoint source
rulemaking. Rules were fashioned after those recently adopted in the adjacent Neuse River
basin. They addressed riparian buffer protection, agriculture, urban stormwater, and fertilizer
management. The rules became effective during 2000 and 2001 and are currently in various
stages of implementation.
Phase III of this Agreement was approved by the EMC on April 14, 2005. It spans an additional
ten years through December 31, 2014. This third phase continues the structure established in
Phase II including overall performance goals for the nutrient strategy of 30 percent reduction in
nitrogen loading from a baseline year of 1991 and no increase in loading of phosphorus from
that baseline. The Phase III Agreement updated Association membership and related nutrient
caps. It proposed action in the first two years to improve the offset rate, resolve related
temporal issues, and revisit alternative offset options. The parties to the Agreement met several
times during the first four years of the Agreement to work on addressing these action items and
came to agreement on issues related to banked credit and credit life.
In 2006 DWQ contracted the NCSU Water Quality Group to estimate the cost-effectiveness of
agricultural BMPs to use for updating the nitrogen offset rate in the Agreement and to establish
a phosphorus offset rate. As a result of the study, the parties to the Agreement indentified
actions to be taken by the conclusion of Phase III and addressed in the Phase IV Agreement:
1. Evaluate whether the Agricultural Cost Share Program continues to provide the most
efficient vehicle to implement the pollution credits trading program. This evaluation
should consider the effect of delays in BMP implementation relative to nutrient cap
exceedance and how such delays may impact the allowable point source nutrient
budget.
2. Evaluate the trading offset credit cost calculation method to ensure the offset rate
reflects all actual costs incurred in program development and implementation and
reflects the costs of the type of agricultural BMPs implemented through this program.
3. Conduct a water quality trend analysis, including evaluation of TN losses occurring
during transport to the estuary. This analysis will inform the parties regarding the need
for changes in acceptable Toads and the relative impacts of point and non -point
contributions.
Fact Sheet
N PDl :S N('€ 020834 Rcne„ ai
agc 3

Nutrient Limits.
Point source dischargers in the Tar -Pamlico River Basin are subject to the terms and conditions
of the Agreement and to the nutrient TMDL developed for the Basin. The Agreement provided a
cost-effective alternative to uniform technology -based nutrient concentration limits. It later
added elements of the TMDL, including estuary loading goals and point and nonpoint source
allocations.
As of December 2009, the Association consists. of fifteen members. The member facilities are
listed in the following table, and their locations are shown on the attached map.
Membership of Tar -Pamlico Basin Association
Permit
Owner
Facility
NC0030317
City of Rocky Mount
Tar River Regional WWTP
NC0023931
Greenville Utilities Commission
GUC WWTP
NC0020605
Town of Tarboro
Tarboro WWTP
NC0025054
City of Oxford
Oxford WWTP
NC0020648
City of Washington
Washington WWTP
NC0069311
Franklin County
Franklin County WWTP
NC0020834
Town of Warrenton
Warrenton WWTP
NC0026042
Town of Robersonville
Robersonville WWTP
NC0020231
Town of Louisburg
Louisburg WWTP
NC0026492
Town of Belhaven
Belhaven WWTP
NC0025402
Town of Enfield
Enfield WWTP
NC0023337
Town of Scotland
Neck Scotland Neck WWTP
NC0020061
Town of Spring Hope
Spring Hope WWTP
NC0020435
Town of Pinetops
Pinetops WWTP
NC0042269
Town of Bunn
Bunn WWTP
The nitrogen and phosphorus caps for the Association are defined in the Phase III Agreement
as follows:
Phase III Nutrient Caps — Tar -Pamlico Basin Association'
Total Nitrogen
Total Phosphorus
(Ib/yr)
(kg/yr)
(Ib/yr)
(kg/yr)
891,272
404,274
161,070
73,060
1 Includes allowed adjustment to the 1991 baseline
The Agreement further provides that the Association may accrue and bank nitrogen credits by
funding nonpoint source nutrient reduction measures (e.g., agricultural BMPs) and that it may
purchase credits or apply banked credits in anticipation of future cap exceedances. The current
Agreement specifies that the Association holds offset credits in the following amounts:
Fact She.!
NP1)I S NCoo.2Os;4 Rcncwai
Pag'4

Nitrogen Offset Credits — Tar -Pamlico Basin Association
Nitrogen Credits
Timeframe
(lb)
(kg)
Phase I
10,138
4,608
Phase II
30,276
13,762
Phase III
10,564
4,802
The Association has consistently and reliably kept its nutrient loadings beneath the caps without
relying on banked credits. By calendar year 2008, the group had reduced its loads to 63% of its
nitrogen cap and 60% of the phosphorus cap.
Since the Tar -Pamlico strategy's inception, the EPA has praised the strategy for its innovative
and integrative approach to nutrient management and has touted it repeatedly as a model for
others to use. However, guidance released by the EPA's Office of Water Management in 2007
re -iterates that federal NPDES regulations (40 C.F.R. 122.44(d)(1)) and Section 301(b)(1)(C) of
the federal Clean Water Act require that NPDES permits include any applicable limitations
established in or based upon an approved TMDL. The Tar -Pamlico permits have not included
nutrient limits, because the Agreement specified the Association's caps and, until recently, the
EPA Region 4 office had accepted that approach. In light of the 2007 guidance, Region 4 has
modified its position on the matter and is requiring that the members' permits include the group
nutrient limits at this time and individual limits in 2014.
Therefore, the Division proposes at this time to include the Phase III nutrient caps as
enforceable permit limits in the members' individual permits. These limits, like the caps, apply to
the aggregate discharge of nitrogen and phosphorus by the Association members as a group.
In order to establish individual nutrient limits by 2014, the Division must conduct additional
technical studies (e.g., determine delivery rates for each discharger, develop individual N and P
allocations) and work with the Association to complete major revisions to the Tar -Pamlico
strategy and the Agreement. It is also likely that the Division must adopt rules to provide for the
operation of the Association under a group NPDES permit.
Annual Nutrient Loads and Caps, Tar -Pamlico Basin Association
Phase I
Combined
19911
19921
19931
19941
N+P
Loading Cap a
N (kg/yr)
525,00
500,00
475,000
425,000
0
0
Actual Load
N (kg/yr)
461,39
436,12
417,217
371,200
4
8
% of Cap
N
88
87
88
87
Average Daily
Flow (MGD)
24.88
26.86
28.46
26.65
Fact Sheet
NPDES NCOu20S 4 Renewal
Page 5

Phase II
Separate
19952
19962
19972
19982
19992
20002
20013
20024
20034
20044
20055
2006
2007
2008
N. P
Loading
Cap a
405,256
405,256
405,256
405,256
405,256
405,256
421,972
426,782
426,782
426,782
404,274
404,274
404,274
404,274
N (kg/yr)
P (kg/yr)
69,744
69,744
69,744
69,744
69,744
69,744
73,060
73,694
73,694
73,694
73,060
73,060
73,060
73,060
Actual
.
Load
372,582
354,219
320,670
344,781
309,476
297,988
279,958
279,330
309,724
256,791*
242,020
232,568
246,465
253,818
N (kg/yr)
P (kg/yr)
37,360
43,266
36,532
36,864
32,052
30,277
32,730
34,076
30,856
33,566*
39,267
46,995
50,077
43,821
% of
Cap
92
87
79
85
76
74
66
65
72
60*
60
58
61
63
N
P
54
62
52
53
46
43
45
46
42
45*
54
64
69
60
Average
Daily
Flow
31.03
33.57
29.84
33.31
33.39
32.74
30.21
30.54
36.86
29.56
29.21
32.85
27.05
27.39
(MGD)
Loads were estimated by NC Division of Water Quality as the sum of calendar -year monthly load values for each facility. which are based on
minimum biweekly nutrient concentrations and daily mass flows.
a Cap values and changes result from the following:
1. Phase I - Original 12-member Association.
2. Phase II through 2000 - 14-member Association.
3. Robersonville added in 2001, making a 15-member Association.
4. Scotland Neck added in 2002, making a 16-member Association.
5. National Spinning Removed in 2005, making a 15 member Association in Phase III

Fact sheet addendum with revisions — May 2010
RPA Analysis
Copper and Zinc data were scanned from the DMRs and from the submitted PPAs (see
attached). Although reasonable potential to exceed WO standards at levels toxic to aquatic life
was present, the plant has consistently passed its toxicity tests. It is therefore recommended
that quarterly sampling continue.
Cyanide had one hit over the detection level (15pg/L compared to 5pg/L). The decision was
made to require quarterly monitoring for this parameter, to acquire more data during this next
renewal period.
Arsenic, beryllium, cadmium, chromium, lead, mercury, nickel, selenium, and silver either did
not show any hits above the quantitation limits or did not show reasonable potential.
Compliance
The Warrenton WWTP has not received any NOVs since January of 2005. The facility has
also been in compliance with its toxicity limit during this entire permit term.
Summary of Proposed Changes
In keeping with Division policies, the following will be incorporated into the permit:
• Special condition A. (3) for nutrient reduction was added (see above). This change has
been made in the permit renewals for each member of the Tar -Pamlico Association. It
includes the Phase III nutrient caps as enforceable permit limits in each members' individual
permit. These limits, like the caps, apply to the aggregate discharge of nitrogen and
phosphorus by the Association members as a group.
• The special condition for mercury monitoring was removed. Method 1631 is specified within
the PPA list, and will be required for all mercury sampling in the future.
• The TRC limit was reduced to 22 ug/L, to agree with the IWC of 75.6%. This will not be a
substantial change, since the new footnote for TRC compliance allows all values below the
quantification level (50ug/L) to be considered compliant.
• Added TKN and Nitrite -Nitrate monthly composite sampling, as per strategy for Association -
member renewals in the Tar -Pamlico basin (see previous discussion under "Nutrient
Controls".
• A modification made after the public comment period includes quarterly monitoring for
cyanide, in response to the 15pg/L sampling hit in the March 2008 PPA.
Proposed Schedule for Permit Issuance
Draft Permit to Public Notice:
Permit Scheduled to Issue:
March 3, 2010
May 2010
NPDES Contact
If you have questions regarding any of the above information or on the attached permit, please
contact Gil Vinzani at [phone].
SIGNED:
Regional Office Comments:
See attached
DATE: 5- i{ 2c2 U

IWC Calculations
Facility: Town of Warrenton WWTP
NC0020834
Prepared By:
GTV
Enter Design Flow (MGD):
Enter s7Q10 (cfs):
Enter w7Q10 (cfs):
2
1
Total Residual Chlorine (TRC)
Daily Maximum Limit (ug/I)
s7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (UG/L)
Upstream Bkgd (ug/I)
IWC (%)
Allowable Conc. (ug/I)
Fecal Coliform
Monthly Average Limit:
(If DF >331; Monitor)
(If DF<331; Limit)
Dilution Factor (DF)
1
2
3.1
17.0
0
75.61
22
Ammonia (Summer)
Monthly Average Limit (mg NH3-N/1)
s7Q10 (CFS)
DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
Upstream Bkgd (mg/I)
IWC (%)
Allowable Conc. (mg/I)
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/I)
w7Q10 (CFS)
200/100mI DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
1.32 Upstream Bkgd (mg/I)
IWC (%)
Allowable Conc. (mg/I)
Total Residual Chlorine
1. Cap Daily Max limit at 28 ug/I to protect for acute toxicity
Ammonia (as NH3-N)
1. If Allowable Conc > 35 mg/I, Monitor Only
2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals); capped at 35 mg/I
3. Monthly Avg limit x 5 = Daily Max limit (Non-Munis); capped at 35 mg/1
4. BAT for Minor Domestics: 2 mg/I (summer) and 4 mg/I (winter)
5. BAT for Major Municipals: 1 mg/I (year-round)
1
2
3.1
1.0
0.22
75.61
1.3
0
2
3.1
1.8
0.22
100.00
1.8
Fecal Coliform
1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non -Muni)
NPDES Server/Current Versions/WLA; TB 1/16/2009

Memo to File
From: Myri Nisely
February 5, 2010
Re: Telephone Conversation w/ Bill Perkinson on Conditions at Warrenton WWTP
Permit No. NC0020834 Bill initiated the call.
Authorities in Warren County government have recently been sensitized to the fact that the plant
is now 30 years old and is showing signs of needed infrastructure repair. Several have visited the
treatment plant (some for the first time) and were able to see the status of the clarifiers and
tertiary filters, along with general conditions.
The county was able to secure a grant from CWMTF for some $50,000 to study plant conditions.
This report has helped convince all that planning must begin to put money into the plant. There
has been a well -written newspaper article recently that speaks for the likely need for utility rate
increases in coming years. (attached — the public comments at the end, too.)
They are currently seeking grant money of about $850, 000 to upgrade the two secondary
clarifiers and to install SCADA. The tertiary filters will receive attention after these higher
priority needs are satisfied.

Walter M. Gardner, Jr.
Mayor
TOWN OF WARRENTON
Historically Great - Progressively Strong"
P 0 Box 281
Warrenton, NC 27589-0281
John Freeman
Administrator
August 21, 2009
Mr. Charles Weaver
NC DENR-DWQ-NPDES
1617 Mail Service Center
Raleigh, NC 27699-1617
Dear Mr. Weaver:
I appreciate the opportunity to speak with you on the phone this morning. I understand from a
series of emails relating to our application for renewal of our operating permit that there is some
confusion about the status of the Warren County Waste Water Treatment Plant, with the
implication that the plant owner must also be the permittee.
Through the 1970's the Town of Warrenton operated its own treatment plant on Town owned
property. That plant was designed primarily to serve contemporary Town needs which did not
include the real and planned growth of the county. Soul City was expected to become a major
population center and infrastructure had to be provided for it and other anticipated county growth.
Because the Town facility was dated and inadequate to meet largely county needs it was decided
that the county would build a new regional treatment plant on county property adjacent to the
existing plant. This new county plant was completed in 1980 and a thirty year management
agreement was signed in September 1980 under which the Town staff would operate the plant under
the existing Town permit with expenses divided among three entities (Warrenton, Norlina and
Warren County). This made sense for a variety of reasons, not the least of which was that Town
staff then —as now —had the necessary experience. As a full management contract, the Town is
responsible for hiring personnel, ensuring their training and certifications, and all compliance
issues. The county takes no responsibility for personnel and compliance.
That is how it stands today —the county owns the plant which is operated by the Town under a
longstanding management agreement based on the Town's permit. To my knowledge the fact that
the owner and permittee are separate entities has not been an issue in the past. It is important to
us that this arrangement continues into the future through a renegotiated contract next year, and
the Town will not voluntarily yield its permit. I hope this helps explain what may be an unusual
situation. Our Town staff, Mayor and Commissioners would be pleased to discuss this matter with
you or to provide any additional information that you require. Thank you again for the opportunity
of speaking with you about the treatment plant and our application for permit renewal.
incerely,
‘‘,,/
hn Freeman
own Administrator
252-257-1122
RECEIVED
AUG 2 4 2009
DENR - WATER QUALITY
POINT SOURCE BRANCH

? OT4TH CAROLINA
•
WARREN COUNT1 • ftt♦3T•'1 •TZ T :�•n1�•T. T ! V�jf T::X •G!it ��•,�t ^\ T
iI11�Jt. �t1 :•.�t� 1!?.�•tl�'t�•Lt1. JLAJi.�HI fil7.►•�•r.'�..�1�:.
THIS AGREEMENT, made and c,' ered into by and among WJC 1N COUNTY, herein-
after referred to as the "COUNT—, ', a body politic and corporate, exiatinL
pursuant to the laws of the Sta.'. of North Carolina; the TOWN Or WAR ENTON,
hereinafter referred to as "„A-ztRi3N'ON", a municipal corporation organized (lnci
existing under the laws of the State of North Carolina; and the TOWN OF NOHLIN;. .
hereinafter referred to as "NORLINA", a municipal corporation organized and
existing under the laws of the State of North Carolina, both municipalities
being situated in Warren County, North Carolina.
1TNESSET H:
THAT WHEREAS, pursuant to a 201 Area Plan for Western Warren County,
Warren County is in the process of completing construction of a regional waste-
water treatment plant which will complete a project providing sewer service6
for Western Warren County, Warrenton and Norlina. The total estimated cost
of the treatment plant project is 5.79 million dollars, and
WHEREAS, , Warren County has financed and will continue to finance the
construction cost of the regional wastewater treatment system, including the
treatment plant, intercepter lines, a forced main, and other facilities ne ca--
sary to provide wastewater treatment for Norlina, Warrenton and the area of
land now included in the Soul City Sanitary District, with a combination of
Federal, State and local funds, and
WHE EAS , Warrenton and Norlina are authorized by Chapter 160A, Article 161
Part 1, of the General Statutes of North Carolina, to acquire, construct, estab-
lish, enlarge, improve, maintain, own and operate sewage collection .and ui*-
posal systems and are permitted to enter into contracts with other units of
local government pursuant to Chapter 160A, Article 20, of the General Statutes
of North Carolina, to execute such functions, and
WHEREAS, W rren County has similar authorization pursuant to North Caro-
lina General Statutes Section 153A-271i(2), 153A-275, and 1.53A--41i5, raid

•.2
Wh?i23AS, each of the parties hereto dcaires to enter into this joint
wastewater treatment :.system ,lgrecmcnt , and has, through actions of its
respective Boards of Commissioners, been duly authorized to enter into this
Agreement for such purposes a: hereinafter stated.
NOW, THER3FOR131 in consideration of the mutual covcnanty and agreements
contained herein, the parties do covenant and agree, each for itself and its
respective successors and assigns, as follows:
1. AUTHORIZATION; EFFZCTIV , i1 T .
Each party hereby certifies that authority to enter into this Agreement
has been established by a duly passed Resolution of its respective Board of
Commissioners. This Agreement shall become effective upon the signature of all
duly authorized parties and shall continue in force until such time as it ex-
pires by its terms, is terminated or modified as provided herein.
' 2. PURPOSE.
• The purpose of this Agreement is to provide an efficient wastewater treat-
ment system for the benefit of Warrenton, Norlina, that area of Western Warren
County now comprised within the limits of the Soul City Sanitary District, and
other persons, firms, corporations and governmental units desiring wastewater
treatment and agreeing to purchase wastewater treatment services in accordance
with this Agreement.
3. TERM.
This Agreement shall exist and continue for a period of thirty (30) years
from the effective date hereof. IT IS EXPRESSLY AGR 'D that this Agreement may
be renewed or extended for such term ofterms as may be mutually agreeable to
the parties hereto, and itchall be binding during its term, and all extensions
and renewals thereof, on the parties hereto, their successors and assigns.
4. TITLE.
The title to all lands, rights -of -way, easements, forced sewer main, inter
ceptcr,, and All facilities located thereon, Funded and acquired by Warren
County, shall be and remain vested in Warren County. In order to operate and
maintain the wastewater treatment system, the County hereby agrees to lease to

Warrenton, upon such terns and conditions as chall be :.yet forth in a sepfiraLe
• Lease Agreement between the County and Warrenton, all property, real and
personal, necessary for the operation of said system, which Lease shall con-
tain provisions providing; for tho use of the property leased for the benefit
of the parties hereto, and subject to the contractual interests of said partieq.
5. SERVICES PROVIDED.
D.
Upon the completion of construction of the wastewater system and transfer
of the property and facilities to Warrenton, Warrenton agrees to operate and
maintain the wastewater treatment system in the following manner:
(a) It :hall maintain a separate regional sewage system account, and
all revenues and disbursements received or expended in connection with said
wa&tewater treatment system shall be deposited•in and disbursed from said
account.
•(b) It shall furnish and pay from the revenue received from said
wastewater treatment system all labor, utilities, supplies, administration and
other maintenance and operating costs necessary for the efficient operation of
said system.
•(c) It shall operate saicl sewage cyotem so as to provide treatment
of wastewater received by said system from the parties hereto and other users
accepted to use said cys tern.
(d) It shall maintain and keep in proper repair all of the forced
main and intercepters which are a part of this system, provided that it chall
not be responsible for maintaining aewer lines and sewer facilities under the
terms of this Agreement which are located within the corporate limits of
Warrenton, Norlina, or the Soul City Sanitary Diatrict, or any extensions
thereof, presently existing or hereafter constructed.
(e) It shall furnish to the parties- hereto an operating statement
of income and expenses each month. An independent auditing fire reasonably
acceptable to all partiec shall audit the accounts of the operation of the
regional sewage aystew no bus than once each year, and sufficient copies of
the audit shall be made available to the parties hereto.
Mb 3

(f) It shall have the authority to permit other users and customers
to tap on to said sewer system, subject to the approval of the County.
6, ACCEPTANCE OF SERVICES.
Norlina agrees to accept the sewer services as herein provided and to use
the system for disposal of wastewater from its customers within the corporate
limits and those customers outside of the city limits served by the Norlina
sewer system, and it further agrees to*pay the cost of such services in ac-
cordance with the terms of this .agreement.
The County agrees to accept the sewer services as herein provided for the
benefit of such persons, firms, corporations and other governmental units as
it may desire to transfer or assign its allocated portion of sewage treatment
capacity. The County shall be responsible for payment of all costs of sewage
treatment used by it for obligations it may assume, its transferees and as-
signs, in accordance with charges applicable to the other parties, provided
that it is understood and agreed that the users of the County portion of the
treatment capacity may reimburse the County for the services used or the County!
may notify Warrenton to render statements directly to each user, whereupon the
user shall be liable. In any event, that portion of the services used on be-
half of the County shall be charged and paid in an amount equal to that charged:
and paid by Norlina and Warrenton.
Warrenton agrees to accept the sewer services as herein provided and to
use the system for disposal of wastewater from its customers within the
corporate limits and those customers outside of the city limits served by its
sewer system. It further. y agrees to pay the cost of such services in accordance.
with the terms of this Agreement from its separate revenues in the same manner
as the other parties and users.
. 7. ALLOCATION OF CAPACITY.
The respective parties hereto shall have the right at any time to purchase
without any cost other than that set out herein, the following percentages of
the total sewage treatment capacity of the original plant:

(a) ,Darren County
(b) Warrenton
' (c) Norlina
58';
25ZJ
1Th
The allocation of treatment capacity in respect to the original plant
shall not be changed except by mutual agreement of all the parties hereto.
In the event any party to this Agreement shall need treatment capacity over
and above its original allocation, it shall have the right to purchase from
the other parties their unused capacity on terms mutually agreeable. "Unused
capacity" as used in this paragraph shall mean the difference between the
capacity allocated to a party and the maximum actual daily flow of sewage for
treatment reasonably anticipated by that party to occur during the succeeding
twelve --month period.
In the event any party needs treatment capacity in addition to the originail
.allocation, and is unable to obtain it from the other parties from their paused'.
capacity, it shall have the right to expand the treatment plant and any other
facilities necessary for the delivery of such additional capacity at its own
expense, provided it does not act to the. detriment of any of the other partieu.
Its allocation of capacity available for purchase shall thereafter be in-
creased by the amount of additional treatment capacity which can be delivered
to it by reason of said expansion.
8. METERING.
It is agreed that all wastewater being treated, the wastewater entering
the transmission line from the area comprising the Soul City Sanitary District,
and the wastewater entering the transmission line from Norlina, Warrenton and
other users on the system, shall each be accurately metered so as to provide
Warrenton with the exact amounts of wastewater treated for each party or
authorized user. All parties shall have the right to inspect and approve the
metering devices.
9. NON --PROFIT OP I ATi0N.
IT IG UNDERST0OD AND AGU;•.D that Warrenton is not eng;i.ging in the saic of
sewage treatment to the other parties to this Agreement, or other users con-

n ec tech to the system, for a profit. The par tied and other users shall be
charged for raid sewage treatment 'on the basis of actual coat of production,
which shall include the cost of salaries of personnel, utilities, su: Alien,
administration and audits. While "cost of production" shall not include
amortization of the initial cost of the system, it shall include provision::
for any reasonable reserves for repairs to and maintenance of the system, for
other reasonable.contingencies relative to the system, and for amortization
and reasonable rental of any equipment, vehicles, and other property purchased
or used by Warrenton for the operation and maintenance of the system. All
"cost of production" shall relate directly to. the operation and maintenance
of the regional system, and shall not include any cost for separate sewer
systems operated by the parties or users.
10. BILLING AND DISCONTINUANCE OF SERVICE.
Each of the parties hereto shall be rendered a statement for services on
the first day of each month, and the parties shall pay Warrenton within fiftee4
(15) days of rendering the statement. Warrenton shall have the right to dis-
continue service to any party hereto, or any other customer using the system,
who does not pay any funds owing to arrenton for services rendered pursuant
' to the terms of this Contract, and fails to remedy the failure to pay within
fifteen (15) days after notice to the user.
11. RESALE.
IT IS UNDERSTOOD AND AG2Z-ED that the parties hereto each have the right
to sell the capacity allotted and used by it at such rates, fees, charges,
penalties. and varying schedules as said party may individually determine.
12. INTERRUPTIONS OF St. VICE.
Warren County and Warrenton :hall not be liable for any failure to recciv4
and treat cewa:e or otherwise perform this Contract in the event such failure
is due to acts of God, strike, power failure, line breaks, system repairs,
catastrophes or other causes beyond the contro.. of the County, !-,,irrenton,
and .their a,;enta and employees. P2OVID�:i?, however, Warrenton nhall Give :ill

parties using the system reasonable notice of any interruptions in service
which might be reasonably anticipated.
Warrenton, in agreeing to operate and maintain the wastewater system,
shall not be liable for any cost of the system other than the charges for the
sewer services it uses. It is understood and agreed by all. parties that the
system is contemplated to operate within the revenues paid for cervices
rendered, and neither party shall be obligated to pay additional fund; to
the system above the cost of production without its consent.
13. COMPLIANCEE WITH LAW.
In providing and receiving all services pursuant to this Contract, the
parties shall abide by all statutes, ordinances, rules and regulations per-
taining to or regulating the provision of such services, including those now
in effect and those hereafter adopted. Arty violation of said statutes,
ordinances, rules or regulations shall constitute a material breach of this
Contract and shall entitle the parties to terminate this Contract immediately
upon delivery of written notice to the party breaching the same.
14. ASSIGNM iT.
It is agreed that any party to this Agreement may assign its interest
and rights herein to any successor, PROVIDED, however, that such assignment
shall be upon the condition that said assignee shall assume all of the as-
signor's obligations hereunder, and be boundby the terms of this Agreement.
5. AM niDNENTS.
This Agreement may be amended by the consent of all the parties hereto
pursuant to resolution of their respective Boards of Commissioners. The
parties agree that this Contract is entered into in order to provide more ef-
ficient and economical wastewater treatment for the area of Warren County
served by the wastewater treatment system, and that the relations be tween the
parties shall be fair and equitable, with due regard to each participating
party, according to their respective vested rights in the allocated portion of
wastewater treatment capacity. If amendments to this Agreement arc necor jitat4
ed to provide improved services to the p<.irticu and other users, the parties
agree that consent to such amendments will not hn unresir nn:ihl n wi thhnl rl . "`n

this end the parties, acting through :their duly authorized representqcive3,
agree to meet jointly at such tires as necessary to review the operation of
the system.
16. ASSURANCES.
The parties to this Agreement acknowledge that Federal funding; has been
obtained and used in connection with the construction of the wastewater treat-
ment system, and hereby agree to execute any and all documents required by
Federal agencies providing the funds, relative to equal employment opportuni-
ties and non-discrimination on the part of the recipient of said Federal grant:. ,
or its respective grantees, assigns and successors in interest.
IN TESTIMONY WHEREOF,' the County of Warren, Town of Warrenton and Town
of Norlina have caused this Agreement to be executed by their duly authorized
representatives, all pursuant to resolutions passed by their respective gov-- .
erning bodies.
•
(SEAL)
• ATTEST: •
Ai. it 4
(SEAL)
ATTEST:
.&6244./ /H. a
(SEAL)
ATTEST: /
//1/(
. WARREN COUNTY /
BY: l� . ,'`�'
VIalter . Barr is, GI ULMIAN
•
TOWN OF :l.L'?:; I°00
BY: (\":1
B. G. White, 1•IAiOR
TO'.IN OF NOItLTNA
BY: / 4i -1
E. L. i erry, HAM?
•

NORTH CAROLINA
WARREN COUNTY
MODIFICATION OF WASTEWATER TREATMENT SYSTEM AGREEMENT
THIS AGREEMENT, made and entered into this 3 , 51-' day of de---ec��.
2004, by and among WARREN COUNTY, the TOWN OF WARRENTON and the TOWN OF
NORLINA, all being situated in Warren County, North Carolina,
WITNESSETH:
THAT WHEREAS, on or about September 19, 1980, the parties hereto entered into a
contract, a copy of which is hereto attached and incorporated herein by reference; and
WHEREAS, said Warren County, the Town of Warrenton and the Town of Norlina have
each agreed to modify certain terms of said contract; and
WHEREAS, each local government unit has approved this Modification Agreement by
resolution of their respective Boards of Commissioners and authorized its execution.
NOW, THEREFORE, it is mutually agreed, that in consideration of the covenants
hereinafter contained, the following portions of the Wastewater System Agreement are
modified and changed as follows:
1. Paragraph 8. METERING is changed to add the following sentence as the
second sentence: Each metering device shall be calibrated by a certified
technician on an annual basis.
2. Paragraph 10. BILLING AND DISCONTINUANCE OF SERVICE changed to
provide as follows:
Percent contribution of each entity shall be determined by the actual monthly
contribution of each entity within its territorial service boundary. Each entity
will be responsible for reading its own meter(s) at the end of each month.
This reading should be provided to the Town of Warrenton by the first
working day of the month, for production of the monthly invoice. The
method of calculation shall be:
Percent Contribution:
• Actual Monthly Waste Treatment Volume
• Less Warren County's contribution for that month
• Less Town of Norlina's contribution for that month
• Equals Town of Warrenton's contribution for that month

The actual percent will be calculated using the contribution determined from
the above calculation.
A Monthly statement for each entity will be calculated as follows:
• ACTUAL monthly expenditures of the Waste Water Treatment Plant
• Plus 25% of that month's ACTUAL expenses of the TOWN ADMINISTRATOR'S
SALARY+TOWN ASSISTANT CLERK'S SALARY+FICA (for the TOWN
ADMINISTRATOR and ASSISTANT CLERK)+RETIREMENT (for the TOWN
ADMINISTRATOR and ASSISTANT CLERK)+HOSPITAL (for the TOWN
ADMINISTRATOR and ASSISTANT CLERK)+LIFE INSURANCE (for the TOWN
ADMINISTRATOR and ASSISTANT CLERK)
• Multiplied times the monthly Percent Contribution (calculated above).
Each of the parties shall be rendered a statement for services rendered on the
fifth working day of each month with accompanying general ledger expenditure
reports, and the parties shall pay Warrenton within fifteen (15) days of the
rendering the statement. Warrenton shall have the right to discontinue service
to any party hereto, or any other customer using the system, who does not pay
any funds owing to Warrenton for services rendered pursuant to the terms of
this Contract, and fails to remedy thelailure to pay within fifteen (15) days after
notice to the user.
It is agreed that the above modifications shall be in effect from and after July 1, 2004,
and shall remain in effect until such time as Warren County, the Town of Warrenton
and the Town of Norlina agree to a new Wastewater System Agreement or change the
provisions of the Agreement by amendment.
IN TESTIMONY WHEREOF, Warren County, the Town of Warrenton, and the Town
of Norlina have caused this Agreement to be executed by their duly authorized
representatives, all pursuant to resolutions adopted by their respective goveming
bodies.

ULYSSES S. ROSS, CHAIRMAN OF THE
WARREN COUNTY BOARD OF
COMMISSIONERS
ATTEST:
TOWN OF NORLINA
BY:
ATTEST:

WARREN COU
BY:
ULfSSES S. ROSS, CHAIRMAN OF THE
WARREN COUNTY BOARD OF
COMMISSIONERS
TOWN OF WARRENTON
BY:
A "1'EST:
TOWN OF NORLINA
BY:
ATTEST:

Town Of Warrenton
April 30, 2009
Ms. Dina Sprinkle
NC DENR / DWQ / Point Source Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
Dear Ms. Sprinkle:
P. 0. Box 281
Warrenton, NC 27589
Phone [phone]
E-mail tow@vanceiref NWB 3J?1f OS 1NIOd
undno NINA\- NN3a
6COZ ti -
2AI333?J
This letter is in reference to our current NPDES permit (NC0020834), which will expire on October 31,
2009. To satisfy the requirement of the renewal package, this letter is to serve as official notice for the
Town of Warrenton's request for the renewal of said permit.
We also want to include in this cover letter the required narrative regarding our facility sludge
management plan. It is as follows:
The sludge generated at the plant is wasted to aerobic digesters, where it is aerated until it is
suitable for land application. The sludge is then hauled away and land applied by Granville
Farms of Oxford, NC (Permit No. WQ0000838).
Sludge Vector Attraction and Pathogens reduction are accomplished in accordance with EPA
503 Regulation, Option 6 (Addition of Akali).
We appreciate your direction and assistance in connection with our permit renewal. If you have any
questions regarding our application, please contact William Perkinson at 252-257-1776.
Sincerely,
75) 614:1411,110,1/t"
(John Freeman
Town of Warrenton Administrator
pc: William Perkinson Town of Warrenton WWTP Superintendent

1
- CHLORINE
CONTACT
TANKS-- -. t
P I.
4
TERITIARY--
FILTERS
POST AERATION
WASTEWATER
PUMP
STATION
EFFLUENT
_ PARSHAL
FLUME
`FISHING CREEK
MAC}IANI CAL
BAR SCREEN •
REMOVAL
FACILITY '
INFLUENT
CHLORINE FEED AND/
HANDLING • SYSTEM •
N.
56 z. �
4
SLUDGE
RECIRCULATION
AND. WASTE
PUMP STATION
FILTER
BACKWASH
WASTE
PUMP
STATION
D It=4"-
RITITCMIED
WASTE
SLUDGE
AEROBIC
DIGESTER
DIGESTED
SLUDGE
•
CLARIFIERS.•
•
•
•
•
EXHIBIT* 1-el
1
N
J
OXIDATION DITCHES
. , LIME FEED SYSTEM
r0EO UNDERDRAINAGE
•
S.L -
S (CONVENTIONAL
• SCHEMATIC FLOW (PATTERN OF WASTEWATER
AND SLUDGE 'AT WARREN COUNTY WASTEWATER TREATMENT PLANT

FACT SHEET —TAR PAM RIVER BASIN
REVIEW FOR EXPEDITED PERMIT RENEWALS
(Instructions for Permit Writer)
Basic Informationto Determine Potential for Expedited Permit Renewal
Reviewer(s) / Date:
%� ; ,f%r.G_ l/k/Z0OX
Check If
✓
Permit Number:
NC0020834
Facility Name:
Warrenton WWTP
✓
Sub -basin number: •
03-03-04
1---
Receiving Stream:
Fishing Creek
L.----
Permit Stre -Classification: C, NSW
v'
Public W P
Private WWTP
WTP
Industrial
Other
* If WTP, add permitted flow limit(MC{ COGREEN
Ro
IE
Pretreatment?
YES
0
(If YES then contact PERCS for data RPA)
TRC limit/footnote?
NO
(I. f in permit edit FOOTNOTE see TRC
FOOTNOTE text)
ES/ADD**
WET testing/footnote? YES/ADD** NO
Of in permit edit SPECIAL CONDITION see
WET language text, check FOOTNOTE)
NH3 limit?
6ES/ADD*
NO
(If in permit check, edit LIMIT for applicable LIMITS
categories, monthly/weekly or weekly/ daily)
** IWC evaluation needed? YES N)
IWC calculation in file? YES NO
***Association member? YES NO
(Check, edit SPECIAL CONDITION and FOOTNOTE
as warranted)
* * * Instream monitoring? Y- ' NO
(Check, edit FOOTNOTE where warranted)
Permit Special Conditions
YES/ADD NO
(If facility has BACKUP CHLORINATION see
SPECIAL CONDITION and FOOTNOTE text)
303(d) listed? YES) NO
Watch Listed? YES NO
Permit MODs since last renewal? YES (NO_
Compliance issues? YES NO
Existing expiration date: 10/31/20
Next cycle expiration date: 10/31/2014
neous Comments
* Apply WTP Permitting Strategy, WET may be required
** IWC requires 7Q10 flow data, check with Basin Coordinator for best source
*** Members now in Phase III, members have wavier on instream monitoring
Select Expedited Catergory That Applies To This Permit Renewal
SIMPLE EXPEDITED - administrative renewal with no changes, or only minor
❑ changes such as TRC or ownership change. Includes conventional WTPs (does not
include permits with Special Conditions, Reverse Osmosis, or Ion -exchange WTPs).
COMPLEX EXPEDITED - includes Special Conditions such as EAA, Wastewater
❑ Management Plan, 303(d) listed, toxicity testing, instream monitoring, compliance•
concerns, edit NH3 limit, phased limits, stream re -class, association membership).
NOEXPEDITED - Mark all of the following that apply:
L`f Major Facility (municipal/industrial)
liPermitted flow >_0.500 MGD (requires full Fact Sheet)
❑ Minor Municipal with Pretreatment Program (SIUs)
El Minor Industrial subject to Federal Effluent guidelines
Limits based on RPA (toxicants/metals, GW remediation for organics)
❑ Other
2009 Tar Pam Basin Permit Review/Shared Drive/Lumber Basin