NC0021849_Permit Issuance_20130712

Aa
NCDENR
North Carolina Department of Environment and Natural Resources
Governor
Mr. Brandon Shoaf
Town Manager
Town of Hertford
P.O. Box 32
Hertford, North Carolina 27944
Dear Mr. Shoaf.
Division of Water Quality
Thomas A. Reeder John E. Skvarla, III
Acting Director Secretary
July 12, 2013
Subject: Issuance ofNPDES Permit Renewal
NCO021849
Town of Hertford WWTP
Perquimans County
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.
There are changes to this permit from the draft permit dated May 22, 2013:
In accordance with review comments received from Mr. Charles Jones, ORC, the equipment list
on the Supplement to Permit Cover Sheet has been revised to remove a caustic tank and
equipment, and the volume of the sludge holding basin has been changed to 328,000 gallons.
In accordance with the recently EPA approved statewide Mercury TMDL, and our
Implementation Strategy, one effluent Total Mercury analysis must be made within 12 months of
submittal of the renewal application. EPA Method 1631 E must be used. This analysis data and
any other mercury analysis conducted during the permit term must be submitted with the
application. If mercury data is not supplied with the renewal application, it may be returned as
incomplete and you may be considered as non -compliant. Refer to Condition A.(2) in the permit.
The following changes have been made from the current permit:
• The limits page A.(1.) for 0.4 MGD at Qutfall 001 has been removed. Old Limits page A.(2.) for
0.7 MGD has been renumbered as A.(L), but continues to refer to Outfal1002.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] FAX: [phone]
Internet: www.nmaterquality.onq
An Equal opportunity 1 Affirmative Action Employer
NorthCarohna
Naturally

• The TRC footnote on Limits page A.(1) has been updated per the Division's TRC Permitting
Strategy.
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.
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 Jim McKay at
james.mckay&cdenr.gov or call [phone].
Sincerely,
Thomas A. Reeder
Enclosure: NPDES Permit FINAL NC0021849 - Town of Hertford WWTP
cc: Washington Regional Office, Surface Water Protection with Fact Sheet
NPDES Unit
Central Files
Aquatic Toxicology, Susan Meadows - via email

Perniit NCO021849
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and
regulations promulgated and adopted by the North Carolina Environmental Management Commission, and the
Federal Water Pollution Control Act, as amended, the
Town of Hertford
is hereby authorized to discharge wastewater from a facility located at the
Hertford Wastewater Treatment Plant
NCSR 1108 north of Hertford
Perquimans County
to receiving waters designated as the Perquimans River in the Pasquotank 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 August 1, 2013.
This permit and authorization to discharge shall expire at midnight on December 31, 2017.
Signed this day July 12, 2013
omas A. Reeder, Acting Director
/Division of Water Quality
By Authority of the Environmental Management Commission

Permit NCO021849
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.
The Town of Hertford is hereby authorized to:
1. Continue
to operate a 0.7 MGD wastewater treatment system that includes the following
components:
Dual Mechanical bar screens
•
Dual Parshall flumes
•
Grit removal system
•
Influent pump station with three pumps
•
Oxidation ditch
•
Flow sputter
•
Two (2) Secondary Clarifiers
•
WAS pump station with dual pumps
•
Dual automatic backwashing disk filters
•
Chlorination using gaseous chlorine
•
Dual 27,500 gallon chlorine contact chambers
•
Dechlorination using sulfur dioxide gas
•
Outfall diffuser
•
One 55,000 gallon aerobic sludge digester
•
One 328,000 gallon sludge holding basin, with fine bubble diffusers
•
Sludge drying beds
•
Sludge loading station for trucks
•
Three (3) 125 kW back up generators with automatic transfer switches
This facility is located at the Hertford WWTP on NCSR 1108, North of Hertford in Perquimans
County.
2. Discharge from said treatment works at the location specified on the attached map into the
Perquimans River, a class SC water in the Pasquotank River Basin.

Permit NCO021849
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Petmit NCO021849
A (I.) 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 002. Such discharges shall be limited and monitored by the Permittee as
specified below:
EFFLUENT
DISCHARGE LIIVIITATIONS
MONITORING REQUIREMENTS
CHARACTERISTICS
Monthly
Weekly
Daily
Measurement
Sample
Sample Location 1
(Parameter Codes) .
Avera e .
Avera a
Maximum
Frequency
Type.
Flow
F(50050 7 MGD
Continuous
Recording
Influent or Effluent
BOD, 5-Day, 20°C
(00310)
15.0 mg/L
22.5 mg/L
3/Week
Composite
Influent and Effluent
(April 1— October 31)
BOD, 5-Day, 20°C 2
(00310)
30.0 mg/L
45.0 mg/L
3/Week
Composite
'Influent and Effluent
(November 1 —March 31)
Total Suspended Solids2
30.0 mg/L
45.0 mg/L
3/Week
Composite
Influent and Effluent
(00530
NH3 as N
(00610)
4.0 mg/L
12.0 mg/L
3/Week
Composite
Effluent
(A ril 1— October 31)
NH3 as N
(00610)
8.0 mg/L
24.0 mg/L
3/Week
Composite
Effluent
(November 1—March 31)
Dissolved Oxygen
3/Week
Grab
Effluent
(00300
Dissolved Oxygen
Upstream &
(00300)
3/Week
Grab
Downstream
(June 1— September 30)
Dissolved Oxygen
Upstream &
(00300)
Weekly
Grab
Downstream
(October 1—May 31)
Enterococci
(61211)
35 /
276 /
3/Week
Grab
Effluent
(geometric mean)
100 m1
100 m1
Total Residual Chlorine 4
13 µg/L
3/Week
Grab
Effluent
(50060)
Temperature
Daily
Grab
Effluent
00010)
Temperature
(000110)
3/Week
Grab
Upstream
Downstream
(June 1—September 30)
Temperature
Upstream &
(00010)
Weekly
Grab
Downstream
(October 1—May 31)
Total Phosphorus
Quarterly
Composite
Effluent
(00665)
Total Nitrogen
(00600)
Quarterly
Composite
Effluent
(NO2+NO3+TKN)
pH
3/Week
Grab
Effluent
(00400)
Total Mercury
See Note 6
Grab
Effluent
(71900)
(See Notes on next page)

Permit NCO021849
NOTES:
1. Upstream = At least 100 feet upstream from the confluence with the Perquimans River. Downstream = At least 100
feet downstream from the confluence with the Perquimans River.
2. The monthly average effluent BOD5 and total suspended solids concentrations shall not exceed 15% of their
respective influent values (85% removal).
3. The daily effluent dissolved oxygen concentration shall not be less than 5.0 mg/L.
4. Limit and monitoring apply only if chlorine or chlorine derivatives are used for disinfection. The Division shall consider
all effluent TRC values reported below 50 µg/L to be in compliance with the permit. However, the Permittee shall record
and submit all values reported by a North Carolina certified laboratory (including field certified), even if these values fall
below 50 µg/L.
5. The pH shall not be less than 6.8 standard units nor greater than 8.5 standard units.
6. See Condition A.(2) for mercury monitoring and reporting requirements.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
A.(2) EFFLUENT MERCURY ANALYSIS
The Permittee shall provide one effluent mercury analysis, using EPA Method 1631 E, in conjunction with
the next permit renewal application. The analysis should be taken within 12 months prior to the application
date. Any additional effluent mercury measurements conducted from the effective date of this permit and up
to the application date shall also be submitted with the renewal application.
If the result of the mercury analysis is not provided with the application, the application may be returned as
incomplete and the Permittee considered non -compliant.

lylckay, James
From:
Charles Jones [[e-mail]]
Sent:
Wednesday, June 19, 2013 12:08 PM
To:
Mckay, James
Subject:
Permit number NC0021849 renewal
Mr. McKay;
In regards to the renewal for permit NC0021849 there are two mistakes in the process discription:
- The 5500 gallon caustic tank with chemical feed equipment was REMOVED during the upgrade
- The actual volume of the sludge storage tank is 328,000 gallons
All other aspects seem to be correct. If you have any questions, let me know.
Charles Jones
Town of Hertford WWTP
PO Box 32 / 142 Meads Circle
Hertford NC 27944
252.426.8182 office
252.333.6948 cell
252.426.7126 fax
hftp://www.townofhertfordnc.com/

THE DAILY ADVANCE
215 S. Water Street, Elizabeth City, NC 27909
NC DENR/DWQ/PT. SOURCE BRANCH
DINA SPRINKLE
1617 MAIL SERVICE CENTER
RALEIGH, NC 27699-1617
PUBLISHER'S AFFIDAVIT
NORTH CAROLINA
PASQUOTANK COUNTY
CopyL'Ine: PN--NPDES Wasterwater Permit
Lines: 35
Total Price: $121.25
**This is not a bill**
Account: 2119700 AD ID: 8166534
AD I D: 8166534
Before the undersigned, a Notary Public of said County and State, duly commissioned, qualified and authorized by law to
administer oaths, personally appeared Maureen Brinson who being first duly sworn, deposes and says that she is the
Manager of Accounting and Administration of The Daily Advance engaged in the publication of a newspaper known as
The Daily Advance, published, issued and entered as second class mail in the City of Elizabeth City in said County and
State; is authorized to make this affidavit and sworn statement; that the notice or other legal advertisement entitled PN-
-NPDES Wasterwater Permit, was published in The Daily Advance on the following dates:
Sunday, May 26, 2013 Page: D3
and that 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.
Affirmed and subscribed before me this 26 day
of May 20111 11
1/
�S� ......
Ix"
U jlotary Public Signature )
•
0 Aouise S. Bunch
•,,�gNS'c�,.``�� (Notary Public Typed Name)
My commission expires April 3rd, 2016
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 pro -
poised 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 signifi-
cant degree of public interest. Please
mail 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:
http�ortal ncdenr.orgAveb/walswoloss/
Dpdes/calender or by calling 9 9
880Z-6390 Town of Hertford applied for
renewal of NPDES permit NCO021849 for
the Hertford WWTP In Perquimans
County. This permitted facility dis-
charges treated wastewater to the Per-
quimans River in the Pasquotank River
Basin.
5/26

FACT SHEET
NPDES Permit NCO021849
Hertford WWTP
'Facility Information
?i licantTacility:
Town of Hertford / Hertford WWTP
Applicant Address:
P.O. Box 32, Hertford, NC 27944
Facility Address:
NCSR 1108 north of Hertford
Permitted Flow
0.7 MGD
Type of Waste:
100% Domestic
Facility/Permit Status:
Renewal
County
Perquimans
' Miscellaneous
Receiving Stream:
Per uimans River
Regional Office:
WaRO
Stream Classification:
SC
Qtiad
C33 NW, Hertford
303(d) Listed?:'
,.:..
Not on Approved
2012 303(d) list
Permit Writer:
. .
Jim McKay
Subbasin:
03 01 52
Date: °: ° . ,
June 28, 2013
HUC.
03010205
(NTS)
Drainage Area (mi2):
Tidal
Summer 7Q10 (cfs)
Tidal
Winter 7Q10 (cfs):
Tidal
Average Flow (cfs):
75
SUMMARY
The Town of Hertford is currently operating a 0.7 MGD wastewater treatment plant, treating wastewater
from Hertford (Population 2,150) and Winfall (Population 600). This facility is 100% domestic with no
pretreatment program.
The Town requested a permit modification on January 12, 2011 to increase discharge to 0.975 MGD
from the permitted 0.7 MGD. An Engineering Alternatives Analysis (EAA) was submitted with the
request. A review of the EAA by the Complex NPDES Permitting Unit staff determined that the EAA
was very incomplete, did not justify the proposed flow increase and did not thoroughly evaluate
alternatives, such as non -discharge via spray irrigation. The flow increase sought was primarily based on
excessive I & I that Hertford had been working on eliminating for years. Hertford was informed that the
Division cannot grant an expansion based only on excess I & I, that EPA would challenge the permit if
we did. The two towns worked together and reduced the I & I to an acceptable level and requested
renewal of the existing permit in September of 2012.
The discharge goes into the Perquimans River in the Pasquotank River basin, classified as SC at the
discharge site. The Perquimans River is not listed as impaired on the Approved 2012 303(d) list. The
river is classified as "Not Rated" at the discharge site due to high pH and low D.O., believed to be caused
by swamp water conditions.
Data review
The WWTP was expanded and upgraded from 0.4 MGD to 0.7 MGD in 2010. DMRs were reviewed for
the period of March 2010 through July 2012, as the new facility started up in March 2010. DMR data is
summarized in Table I below:
Table I DMR Data March, 2010 - July, 2012 Hertford WWTP
Total
Dissolved
Flow
Residual
BOD
TSS
NH3-N
Enterococci
Oxygen
(MGD)
Chlorine
(mg/L)
(mg/L)
(mg/L)
(#//100 nil)
(mg/L)
Average
0.483
<25
3.28
6.5
0.131
3.7
7.28
Maximum
2.738
1 <25
40.0
1 146.0
4.090
2,419.0
10.13
Minimum
0.238
1 <25
2.0
1 2.0
0.040
< 1
5.00
Percent Removal: 98.5% for BOD; 91.9% for TSS.
Pagel of 3

Table H Flow Data Review:
Year
Flow MGD
Flow Limit, MGD
% of Flow Limit
2009 Average
0.621
0.4
155.25%
2010 Avg. Mar - Dec
0.533
0.7
76.14%
2011 Average
0.468
0.7
66.86%
2012 Avg. Jan - July
0.523
0.7
74.71 %
COMPLIANCE SUMMARY:
The plant experienced some problems with flow in early 2010, but after the expanded plant went on line
and the flow limit increased to 0.7 MGD, the facility has been in compliance, with no operational
problems.
DMR Data Review:
DMR discharge data for March 2010 through July, 2012 as the expanded facility began operation in
March 2010.
INSTREAM MONITORING:
Hertford monitors instream for Temperature and Dissolved Oxygen. The downstream D.O. is generally
higher than upstream D.O., indicating that the discharge may be beneficial to the stream. There were
three instances over the 31 month monitoring period where downstream D.O. was lower than upstream.
The instream D.O. was generally over 5.0 mg/ L, but there were 7 instances where upstream D.O. was
less than 5 mg/ L and in 5 of these, the downstream D.O. was also less than 5 mg/ L but higher than
upstream values.
Instream monitoring for Temperature and Dissolved Oxygen will remain in the permit.
Whole Effluent Toxicity Testing:
The facility does not monitor for toxicity, as it is a minor (< 1.0 MGD) and does not receive complex or
industrial wastes. WET will not be required for the renewal.
Outfall Identity:
The original WWTP, permitted for 0.4 MGD, discharged to Perquimans River through Outfall 001.
When expansion to 0.7 MGD was requested, the outfall location was changed to a downstream location
with better mixing, and was identified as Outfall 002. Once the plant was expanded to 0.7 MGD capacity
and Outfall 002 with a diffuser was placed in operation, Outfall 001 was abandoned. The facility
continues to report discharge data as Outfall 002. For data continuity purposes, Outfall 002
nomenclature will continue, for this permit cycle at least.
PERMIT CHANGES:
• In accordance with comments from WWTP operations staff during the draft review, the
caustic tank and associated equipment was removed from the Supplement to Cover Sheet
equipment list, and the volume of sludge storage tank was corrected to 328,000 gallons.
• The Limits page A.(1.) for 0.4 MGD at Outfall 001 has been removed. Old Limits page A.(2) for
0.7 MGD was renumbered as A.(1.), but will continue to refer to Outfall 002.
• The TRC footnote was updated per the Division's TRC Permitting Strategy.
• Mercury monitoring once per the permit term added per TMDL Permitting Strategy. See A.(2).
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice: May 22, 2013 (est.)
Permit Scheduled to Issue: July 12, 2013 (est.)
Permit Effective Date: August 1, 2013.
Page 2 of 3

STATE CONTACT:
If you have any questions on any of the above information or on the attached permit, please contact Jim
McKay at [phone] or by email at [e-mail].
NAME: 1' t DATE:
REGIONAL OFFICE COMMENT:
NAME: DATE:
Page 3 of 3

NPDES Permitting for Mercury
Implementation of 2012 Statewide Mercury TMDL
NPDES Permit NC0021849 Town of Hertford WWTP
Facility Type
Annual Average
Limit Required (see A)
Monitoring Frequency
(with 1631 E analysis)
MMP Required (see B)
Major Muni (>I MGD)
Yes
Quarterly
Yes(if> 2 MGD
No
3 PPA only
Yes- if multiple detects
above 1 n 1 and > 2 MGD
Minor Muni (<1 MGD)
Yes
Quarterly
No
No
Once/5 years
No
Industrial
Yes
Quarterly
Yes
No
None in permit. Might be
required for EPA
application form.
No
A.Procedure to Determine if Annual Average Limit Required:
Step I- WQBEL Evaluation
• Evaluate need for Water Quality Based Effluent Limit (WQBEL)
• Calculate Allowable mercury concentration using dilution (12 ng/1 x 7Q10 dilution factor)
• Compare Annual effluent concentrations to Allowable Conc. for each of last 5 years
• If any Annual Avg > Allowable Conc., then add Annual Avg WQBEL.
Step 2- TBEL Evaluation
• Evaluate need for Technology Based Effluent Limit (TBEL)
• Compare all individual values to TBEL of 47 ng/1
• If any single value > 47 ng/l, then add Annual Avg TBEL of 47 ng/l.
Step 3- Compare WQBEL to TBEL
• If data triggers need for WQBEL and TBEL, select most stringent of the two limits.
• If data triggers need for only TBEL, add 47 ng/1 annual average limit unless WQBEL < 47 ng/l, in which
case annual avg limit should be set at WQBEL.
• Conclusion: the Annual Avg limit will range from 12 ng/1 to upper cap of 47 ng/l.
Step 4- If NEW limit, delay effective date
• Addition of new limit will become effective in 5`h year of permit, with mercury minimization plan
development/implementation required for first 4 years (see MMP below).
B. Mercury Minimization Plan (MMP). If an MMP is required (note change to Major Municipal > 2MGD), add
the following Special Condition to the permit:
A(x). Mercury Minimization Plan (MMP). The permittee shall develop and implement a mercury minimization
plan during this permit term. The MMP shall be developed within 180 days of the NPDES Permit Effective Date,
and shall be available for inspection on -site. A sample MMP was developed through a stakeholder review process
and has been placed on the Division website for guidance (hLR://I)ortal.ncdenr.or web/wg/swp/ps/npdes, under
Model Mercury Minimization Plan). The MMP should place emphasis on identification of mercury contributors and
goals for reduction. Results shall be summarized and submitted with the next permit renewal.
C. New/Expandinz Dischargers- will be allowed as long as the overall aggregate point source load allocation is not
exceeded.
D. Special Situations- Additional site -specific information, such as fish tissue and water column data when
available, will be considered in assigning limits and MMP requirements. Also, limits > TBEL may be considered on
case -by -case basis due to extenuating circumstances
Version 06/13/2013 Prepared by: Tom Belnick Approved by Jeff Poupart

Mlckay, James
From: Thorpe, Roger
Sent: Friday, May 17, 2013 9:54 AM
To: Mckay, James
Subject: Draft Renewal NC0021849, Hertford WWTP
I have reviewed the draft and do not have any comments to add.
Thanks
'Roger

Removal Rate Calculations
m le Date
Nov-10
Spreadsheet
Instructions:
Dec-10
1) Data
entered only h
Jan-11
Heavy
Bordered cell:
Rest of
worksheetis
protected,
password is
2 .
2) For below
detection datz
enter "<" in "<
column, and
enterdetectio
level in Influer
Feb- 11
Mar- 11
Apr- I I
May- I 1
Jun-11
Jul- 11
Aug-
g
Sep-11
or Effluent mg
columns.
Spreadsheet
will auto-
matically
calculate
averages and
removal rates
using 1/2 valu
entered.
3) Document
Oct-11
Nov-11
Jan-12
Feb-12
Mar-12
Apr- 12
removal Rate
choice
Aifov_17 I
Jun-12
4) Formulas in
Jul-12.
Compre-
hensive Guide
HWA Chapter,
Column Averages =>
Section E,
page 1.
NCO021849
Hertford WWTP
1/15/2013
21849 Removal -rate Calculation
Removal Rates
Page 1 of 1 pages
1116/2013, 8:30 AM
Revision: August 1999
Unpaired Site Specific RR => 98.47
Literature/Default RR => 85.00
20 % of data is BDL
n
on <
Effluent
mg/L
Used in
Calculation
7223.77223.7
11.2
11.2
6.0
6.0
17.2
17.2
112.0
112
23.4
23.4
162.0
162
12.8
12.8
135.0
135.0
5.6
5.6
147.0
147.0
8.0
8.0
158.0
158.0
7.8
7.8
145.0
145.0
11.0
11.0
183.0
183.0
5.6
5.6
126.0
126.0
3.6
3.6
149.0
149.0
4.4
4.4
180.0
180.0
< 2.5
< 2.5
172.0
172.0
3.0
3.0
159.0
159.0
11.4
11.4
163.0
163.0
21
21.0
112.0
112.0
26.0
26.0
131.0
131.0
16.6
16.6
136.0
136.0
26.8
26.8
114.0
114.0
11.4
11.4
rl
101.0
101.0
3.7
3.7
145.89
Unpaired Site Specific RR =>
Literature/Default RR =>
11.83
91.89
85.00
0 % of data is BDL
Unpaired Site Specific RR =>�
Literature/Default RR => 85.00
of data is BDL

V.
NC0021849
Hertford WWTP DMR Data
Date
Flow, MGD
Average
Maximum
Minimum
Jan-09
0.631
0.790
0.540
2009 Average flow, MGD
Feb-09
0.519
0.585
0.440
2010 Average flow, MGD
Mar-09
0.686
1.023
0.490
2010 Mar - Dec. flow, MGD
Apr-09
0.987
1.509
0.651
2011Average flow, MGD
May-09
0.445
0.557
0.392
2012Average Jan-July,MGD
Jun-09
0.416
0.639
0.336
Jul-09
0.447
0.835
0.338
Aug-09
0.591
1.225
0.410
Sep-09
0.556
0.859
0.431
Oct-09
0.420
0.491
0.365
Nov-09
0,771
2.017
0.434
Dec-09
0.987
1.509
0.651
Jan-10
0.817
1.072
0.635
Feb-10
0,837
1.362
0.598
Mar-10
0.742
1.342
0.521
Apr-10
0.612.
0.915
0.462
May-10
0.506
0.746
0.383
Jun-10
0.407
0.497
0.317
Jul-10
0.335
0.380
0.284
Aug-10
0.339
0.470
0.290
Sep-10
0.421
2.738
0.283
Oct-10
0.580
1.205
0.400
Nov-10
0.404
0.486
0.361
Dec-10
0.399
0.468
0.343
Jan-11
0.528
0.696
0.352
Feb-11
0.601
0.835
0.481
Mar-11
0.591
0.929
0.477
Apr-11
0.604
0.836
0.478
May-11
0.432
0.518
0.383
Jun-11
0.368
0.429
0.329
Jul-11
0.365
0.603
0.305
Aug-11
0.375
0.741
0.296
Sep-11
0.507
0.683
0.402
Oct-11
0.441
0.562
0.372
Nov-11
0.409
0.439
0.378
Dec-11
0.387
0.443
0.355
Jan-12
0.412
0.478
0.349
Feb-12
0.520
0.672
0.437
Mar-12
0.596
0.846
0.469
Apr-12
0.512
0.671
0.429
May-12
0.603
1.002
0.344
Jun-12
0.559
1.048
0.442
Jul-12
0.461
0.796
0,288
Red = Above 80% of 0.4 MGD (0.32 MGD)
Orange = Above 80% of 0.7 MGD (0.56 MGD)
Monthly Average Flow, % of flow limit
(0.4 MGD through 2/2010, 0.7 MGD afterward)
0.621
155.33%
0.533
76.18%
0.475
67.79%
0.468
66.80%
0.523
74.76%

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Town of Hertford WWTP, NCO021849 RENEWAL PASQUOTANK
FORM
2A
NPDES
APPLICATION OVERVIEW
Form 2A has been developed in a modular format and consists of a "Basic Application Information" packet
and a "Supplemental Application Information" packet. The Basic Application Information packet is divided
into two parts. All applicants must complete Parts A and C. Applicants with a design flow greater than or
equal to 0.1 mgd must also complete Part B. Some applicants must also complete the Supplemental
Application Information packet. The following items explain which parts of Form 2A you must complete.
BASIC APPLICATION INFORMATION:
A. Basic Application Information for all Applicants. All applicants must complete questions A.1 through A.B. A.treatment works
that discharges effluent to surface waters of the United States must also answer questions A.9 through A.12.. ,
B. Additional Application Information for Applicants with a Design Flow Z 0.1 mgd. All treatment works that have design flows
greater than or equal to 0.1 million gallons per day must complete questions B.1 through .6. i • 0 1 9
C. Certification. All applicants must complete Part C (Certification).
SUPPLEMENTAL APPLICATION INFORMATION:
D. Expanded Effluent Testing Data. A treatment works that discharges effluent to surface waters of the United States and meets
one or more of the following criteria must complete Part D (Expanded Effluent Testing Data):
1. Has a design flow rate greater than or equal to 1 mgd,
2. Is required to have a pretreatment program (or has one in place), or
3. Is otherwise required by the permitting authority to provide the information.
E. Toxicity Testing Data. A treatment works that meets one or more of the following criteria
Data):
1. Has a design flow rate greater than or equal to 1 mgd,
2. Is required to have a pretreatment program (or has one in place), or
3. Is otherwise required by the permitting authority to submit results of toxicity testing.
F. Industrial User Discharges and RCRA/CERCLA Wastes. A treatment works that accepts process wastewater from any
significant industrial users (SIUs) or receives RCRA or CERCLA wastes must complete Part F (Industrial User Discharges
and RCRA/CERCLA Wastes). SIUs are defined as:
1. All industrial users subject to Categorical Pretreatment Standards under 40 Code of Federal Regulations (CFR) 403.6 and
40 CFR Chapter I, Subchapter N (see instructions); and
2. Any other industrial user that:
a. Discharges an average of 25,000 gallons per day or more of process wastewater to the treatment works (with certain
exclusions); or
b. Contributes a process wastestream that makes up 5 percent or more of the average dry weather hydraulic or organic
capacity of the treatment plant; or
C. Is designated as an SIU by the control authority.
G. Combined Sewer Systems. A treatment works that has a combined sewer system must complete Part G (Combined Sewer
Systems).
ALL APPLICANTS MUST COMPLETE PART C (CERTIFICATION) .-
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 1 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Town of Hertford WWTP, NCO021849
RENEWAL
PASQUotANk
BASIC APPLICATION II bKmATION
PART A. BASIC APPLICATION INFORMATION FOR ALL APPLICANTS -
All treatment works must complete questions A.1 through A.8 of this Basic Application Information Packet
A.I. Facility Information.
Facility Name Town of Hertford WWTP
Mailing Address PO -Box 32
Hertford NC 27944
Contact Person Charles A. Jones, Jr.
Title Chief Operator
Telephone Number [phone]
Facility Address 142 Meads'Circle
(not P.O. Box) Hertford NC 27944
A.2. Applicant Information. If the applicant is different from the above, provide the following: _
Applicant Name
Mailing Address
Contact Person
Title
Telephone Number ( )
Is the applicant the owner or operator (or both) of the treatment works?
® owner ❑ operator
Indicate whether correspondence regarding this permit should be directed to the facility or the applicant. .
® facility ❑ applicant
A.3. Existing Environmental Permits. Provide the permit number of any existing environmental permits that have been issued to the treatment works
(include state -issued permits).
NPDES NCO021849 PSD
UIC Other W00021289
RCRA Other WQ0020239
A.4. Collection System Information. Provide information on municipalities and areas served by the facility. Provide the name and population of each
entity and, if known, provide information on the type of collection system (combined vs. sepaiate) and its ownership (municipal, private, etc.).
Name Population Served Type of Collection System Ownership
Town of Hertford 2150 Separate Municipal
Town ofwinfall 600 Separate Municipal
Total population served 2750
EPA Form 3510-2A (Rev. 1-99), Replaces EPA forms 7550-6 & 7550-22. Page 2 of 22

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Town of Hertford WWTP, NCO021849 RENEWAL PASQUOTANK
A.5. Indian Country.
a. Is the treatment works located in Indian Country?
❑ Yes ® No
b. Does the treatment works discharge to a receiving water that is either in Indian Country or that is upstream ffom (and eventually flows
through) Indian Country?
❑ Yes ® No
A.6. Flow. Indicate the design flow rate of the treatment plant (i.e., the wastewater flow rate that the plant was built to handle). Also provide the
average daily flow rate and maximum daily flow rate for each of the last three years. Each year's data must be based on a 12-month time period
with the le month of "this year" occurring no more than three months prior to this application submittal.
a. Design flow rate 0.700 mgd
Two Years Ago Last Year This Year
b. Annual average daily flow rate 0.531 MGD 0.468 MGD 0.526 MGD
C. Maximum daily flow rate 2.738 MGD- 0.929 MGD 1.002 MGD
A.7. Collection System. Indicate the type(s) of collection system(s) used by the treatment plant. Check all that apply. Also estimate the percent
contribution (by miles) of each.
N Separate sanitary sewer 100 %
❑ Combined storm and sanitary sewer %
A.8. Discharges and Other Disposal Methods.
a. Does the treatment works discharge effluent to waters of the U.S.? N Yes ❑ No
If yes, list how many of each of the following types of discharge points the treatment works uses:
i. Discharges of treated effluent 1
ii. Discharges of untreated or partially treated effluent 0
iii. Combined sewer overflow points 0
iv. Constructed emergency overflows (prior to the headworks) 0
V. Other
b. Does the treatment works discharge effluent to basins, ponds, or other surface impoundments
that do not have outlets for discharge to waters of the U.S.? ❑ Yes N No
If yes, provide the following for each surface impoundment:
Location:
Annual average daily volume discharge to surface impoundment(s)
Is discharge ❑ continuous or ❑ intermittent?
C. Does the treatment works land -apply treated wastewater?
If yes, provide the following for each land application site:
Location: Corner of Grubb Street and Meads Circle, Hertford NC
Number of acres: Approximately 100 wetted
N Yes
mgd
❑ No
Annual average daily volume applied to site: 0.240 mgd
Is land application ❑ continuous or N intermittent?
d. Does the treatment works discharge or transport treated or untreated wastewater to another
treatment works? ❑ Yes N No
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 3 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Town of Hertford WWTP, NCO021849
RENEWAL
PASQU®TANK
If yes, describe the mean(s) by which the wastewater from the treatment works is discharged or transported to the other treatment works
(e.g., tank truck, pipe).
If transport is by a party other than the applicant, provide:
Transporter Name
Mailing Address
Contact Person
Title
Telephone Number ( 1
For each treatment works that receives this discharge, provide the following:
Name
Mailing Address '
Contact Person
Title
Telephone Number
If known, provide the NPDES permit number of the treatment works that receives this discharge
Provide the average daily flow rate from the treatment works into the receiving facility.
mgd
e. Does the treatment works discharge or dispose of its wastewater in a manner not included
in A.8. through A.8.d above (e.g., underground percolation, well injection): ❑ Yes
❑ No
If yes, provide the following for each disposal method:
Description of method (including location and size of site($) if applicable):
Annual daily volume disposed by this method:
Is disposal through this method ❑ continuous or ❑ intermittent?
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 4 of 22

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: . RIVER BASIN:
Town of Hertford WWTP, NCO021849 RENEWAL PASQUOTANK
WASTEWATER DISCHARGES:
If you answered "Yes" to question A.8.a, complete questions A.9 through A.12 once for each outfall (including bypass points) through
which effluent is discharged. Do not include Information on combined sewer overflows in this section. If you answered "No" to question
A.8.a, go to Part B. "Additional Application Information for Applicants with a Design Flow Greater than or Equal to 0.1 mgd."
A.9. Description of Outfall.
a. Outfall number 002
b. Location Hertford 27944
(City or town, if applicable) (Zip Code)
Perouimans NC
(County) (State)
(Latitude)
C. Distance from shore (if applicable)
d. Depth below surface (if applicable)
e. Average daily flow rate
f. Does this outfall have either an intermittent or a periodic discharge?
If yes, provide the following information:
Number f times per year discharge occurs:
Average duration of each discharge:
Average flow per discharge:
Months in which discharge occurs:
g. Is outfall equipped with a diffuser?
(Longitude)
43 ft.
15 ft.
0.500 mgd
❑ Yes ® No (go to A.9.g.)
mgd
N. Yes ❑ No
A.10. Description of Receiving Waters.
a. Name of receiving water Perouimans River
b. Name of watershed (if known) N/A
United States Soil Conservation Service 14-digit watershed code (if known):
c. Name of State Management/River Basin (if known):
United States Geological Survey 8-digit hydrologic cataloging unit code (if known):
d. Critical low flow of receiving stream (if applicable)
acute cis chronic cfs
e. Total hardness of receiving stream at critical low flow (if applicable): mg/I of CaCO3
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 5 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Town of Hertford WWTP, NCO021849
RENEWAL
PASQUOTANK
A.11. Description of Treatment '
a. What level of treatment are provided? Check all that apply.
! ❑ Primary+.. ❑ Secondary
M Advanced ❑ Other. Describe:
b. Indicate the following removal rates (as applicable):
Design BOD5 removal or Design CBOD5 removal >95 %
Design SS removal >95 %
Design P removal N/A %
Design N removal N/A % .
Other %
C. What type of disinfection is used for the effluent from this outfall?. If disinfection varies by season, please describe:
Liquid Chlorine
If disinfection is by chlorination is dechlorination used for this outfall? ® Yes ❑ No
Does the treatment plant have post aeration? ❑ Yes M No
A.12. Effluent Testing Information. All Applicants that discharge to waters of the US must provide effluent testing data for the following
parameters. Provide the indicated effluent testing required by the permitting authority for each outfall through which effluent is
discharged. Do not include information on combined sewer overflows in this section. All information reported must,be, based on data
collected through analysis conducted using 40 CFR Part 136 methods. In addition, this data must comply with QAOQC requirements of
40 CFR Part 136 and other appropriate QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part. 136. At a
minimum, effluent testing data must be based on at least three samples and must be no more than four and one-half years apart.
Outfall number:
MAXIMUM DAILY VALUE
AVERAGE DAILY VALUE
PARAMETER
Value
Units
Value
-
Units
Number of Samples
pH (Miriimum)
6.9
s.u.
pH (Ma)dmum)
7.2
s.u.
Flow Rate
1.002
MGD
0.466
MGD
365
Temperature (Winter)
7
Deg C
13.4
Deg C
60
Temperature (Summer)
30.2
Deg C
23.4
Deg C
84
* For pH please report a minimum and a maximum daily value
- -
MAXIMUM DAILY
AVERAGE DAILY DISCHARGE
POLLUTANT
DISCHARGE
ANALYTICAL
ML/MDL
Number of
METHOD,
Conc.
Units
'Conc. ,
Units
Samples
CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS
BIOCHEMICAL OXYGEN
BOD5
5.1
m /L
2.9
m /L
156
SM5201 B
2.0
DEMAND (Report one)
CBOD5
Enterococci
200.5
C01/100
3.7
Col/100
156
IDEXX
1
TOTAL SUSPENDED SOLIDS (rSS)
23.4
m /L
5.3,
mg/L
156
SM2450D
2.5
END OF PART A.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
EPA Form 3510-2A (Rev.1-99). Replaces EPA forms 7550-6 & 7550-22. Page fi of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Town of Hertford WWTP, NCO021849
RENEWAL
PASQUOTANK
BASIC APPLICATION INFORMATION
'PART B. ADDITIONAL APPLICATION INFORMATION FOR APPLICANTS .WITH A DESIGN FLOW GREATER THAN OR
EQUAL TO 0.1 MGD (100,000 gallons per day).
All applicants with a design flow rate >_ 0.1 mgd must answer questions BA through B.6. All others go to Part C (Certification).
BA. Inflow and Infiltration. Estimate the average number of gallons per day that flow into the treatment works from inflow and/or infiltration.
50,000 gpd
Briefly explain any steps underway or planned to minimize inflow and infiltration.
Continue to rehabilitate manholes, slip line sewer lines, and repair broken lines and laterals.
8.2. Topographic Map. Attach to this application a topographic map of the area extending at least one mile beyond facility property boundaries. This
map must show the outline of the facility and the following information. (You may submit more than one map if one map does not show the entire
area.)
a. The area surrounding the treatment plant, including all unit processes.
b. The major pipes or other structures through which wastewater enters the treatment works and the pipes or other structures through which
treated wastewater is discharged from the treatment plant. Include outfails from bypass piping, if applicable.
c. Each well where wastewater from the treatment plant is injected underground.
d. Wells, springs, other surface water bodies, and drinking water wells that are: 1) within % mile of the property boundaries. of the treatment
works, and 2) listed in public record or otherwise known to the applicant.
e. Any areas where the sewage. sludge produced by the treatment works is stored, treated, or disposed.
f. If the treatment.works receives waste that is classified as hazardous under the Resource Conservation and Recovery Act (RCRA) by truck, rail,
or special pipe, show on the map where the hazardous waste enters the treatment works and where it is treated, stored, and/or disposed.
B.3. Process Flow 1]iayram or Schematic. Provide a diagram showing the processes of the treatment plant, including all bypass piping and all
backup power sources or redunancy in the system. Also provide a water balance showing all treatment units, including disinfection, (e.g:;
chlorination and dechlorination). The water balance must show daily average flow rates at influent and discharge points and approximate daily flow
rates between treatment units. Include a brief narrative description of the diagram.
B.4. Operation/Maintenance Performed by Contractor(s).
Are any operational or maintenance aspects (related to wastewater treatment and effluent quality) of ttie treatment works the responsibility of a
contractor? ❑ Yes ® No
If yes, list the name, address, telephone number, and status of each contractor and describe the contractor's responsibilities (attach additional
pagesrf necessary).
Name:
Mailing Address:
Telephone Number. ( )
Responsibilities of Contractor.
B.S. Scheduled improvements and Schedules of Implementation. Provide information on any uncompleted implementation schedule or
uncompleted plans for improvements that will affect the wastewater treatment, effluent quality, or design capacity of the treatment works. If the
treatment works has several different implementation schedules or is planning several improvements, submit separate responses to question B.5
for each. (If none, go to question 6.6.)
a. List the outfall number (assigned in question A.9) for each outfall that is covered by this implementation schedule.
b. Indicate whether the planned improvements or implementation schedule are required by local, State, or Federal agencies.
❑ Yes 0 No
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 7 of 22

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Town of Hertford WWTP, NCO021849
RENEWAL
PASQUOTANK
C. If the answer to B.5.b Is "Yes," briefly describe, including new maximum daily inflow rate (if applicable).
d. Provide dates imposed by any compliance schedule or any actual dates of completion for the implementation steps listed below, as
applicable. For improvements planned independently of local, State, or Federal agencies, indicate planned or actual completion dates, as
applicable. Indicate dates as accurately as possible.
Schedule Actual Completion
Implementation Stage MM/DD/YYYY MM/DD/YYYY
- Begin Construction / .. / / /•
- End Construction / - / 4 /
- Begin Discharge
- Attain Operational Level / / / /
e. Have appropriate permits%learances concerning other FdderaUStafe requirements been obtained? ❑ Yes ❑ No
Describe briefly:
B.6. EFFLUENT TESTING. DATA (GREATER THAN 0.1 MGD ONLY).
Applicants that discharge to waters of the US must provide effluent testing data for the following parameters. Provide the indicated
effluent testing required by the permitting authority for each outfall through which effluent is discharged. Do not include information".
on combine sewer overflows in this section. Ail,information'reported must be based on data collected through analysis conducted
using 40 CFR Part 136 methods. In addition, this data must comply with QA/QC requirements of 40 CFR Part 136 and other appropriate
QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136. At a minimum effluent testing data must be
based on at least three pollutant scans and must be no more than four and on -half years old.
Outfall Number:
- MAXIMUM DAILY
AVERAGE DAILY DISCHARGE
POLLUTANT_
DISCHARGE
ANALYTICAL ,
MUMDL
Number of
METHOD
Conc.
Units
Con"... _
Units
Samples
CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS
AMMONIA (as N)
1.5
mg/L
mg/L
156
EPA 350.1
0.04
CHLORINE (TOTAL
<25
ug/L
<25
ug/L
156
SM 4500 Cl G
25
RESIDUAL, TRC)
DISSOLVED OXYGEN
9.85
mg/L
7.4
mg/L
156
SM 4500 O G
2.0
TOTAL KJELDAHL
NITROGEN (TKN)
1.41
mg/L
1.05
mg/L
4
EPA 361.2
NITRATE PLUS NITRITE
20.48
mg/L
13.83
mg/L
4
EPA 353.2
NITROGEN
OIL and GREASE
PHOSPHORUS (Total)
1.79
mg/L
1.28
mg/ L ."
4
EPA 365.4
TOTAL DISSOLVED SOLIDS
595
mg/L
431.
mg/L.
::3,
SM 2540 C
(TDS)
OTHER
END OF PART E.
REFER TO THE APPLICATION OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER PARTS
OF FORM 2A YOU MUST COMPLETE
EPA Form 3510-2A (Rev..1-99). Replaces EPA forms 7550-6 $ 7650-22. Page 8 of 22

FACILITY NAME AND PERMIT NUMBER:"
PERMIT ACTION REQUESTED:
RIVER BASIN:
Town of Hertford WWTP, NCO021849
RENEWAL
PASQUOTANK
BASIC APPLICATION INFORMATION
PART C. - CERTIFICATION
All applicants must complete the Certification Section. Refer to Instructions to determine who is an officer for the purposes of this
certification. All applicants.must complete all applicable sections of Form 2A, as explained in the Application Overview. Indicate below which
parts of Form 2A you have completed and are submitting. By signing this certification statement, applicants confirm that they have reviewed
Forth 2A and have completed all'sections that apply to the facility for which this application is submitted.
Indicate which parts of Form 2A you have completed and are submitting:
® Basic Application Information packet Supplemental Application Information packet:
❑ Part D (Expanded Effluent Testing Data)
❑ Part E (Toxicity Testing: Biomonitoring Data)
❑ Part F (Industrial User Discharges and RCRAICERCLA Wastes)
❑ Part G (Combined Sewer Systems)
ALL APPLICANTS MUST COMPLETE THE FOLLOWING CERTIFICATION.
I certify under penalty of law that this document and all attachments were prepared under my direction or supervision in accordance'with'a'system` '
designed to assure that qualified personnel properly gather and evaluate the information submitted, Based on my inquiry of the person or• persons who
manage the system or those persons directly responsible forgathering the information, the information is, to the best of my knowledge and belief, true,
accurate, and complete. I am aware that there are, significant penalties for submitting false information, including the possibility of fine and imprisonment
for knowing violations.
Name and official title CharliA A. nes' -Jr. hief O erator
Signature
Telephone number ?2521333.6948
Date signed' 28 June 2012
Upon request of the permitting authority, you must submit any other information necessary to assure wastewater treatment practices at the treatment
works or identify appropriate permitting requirements.
SEND COMPLETED FORMS TO:
NCDENR/ DWQ
Attn: NPDES Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
t
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7560-22. Page 9 of 22

. Town of Hertford WWTP, NC0021849
B3. Process diagram key Sheet 1
1. Mechanical bar screen with debris washer
2. Parshall flume with flow measurement
3. Grit removal system with pump, water separator and conveyor belt
4. Influent well with three pumps
5. Oxidation ditches with mechanical rotating mixers (3)
6. Mixed liquor splitter box
7. Secondary clarifiers (2)
8. Tertiary filters
9. Chlorine injection and contact tank
10. Sulfur dioxide injection
11. Effluent pumps and flow metering
12. Spray irrigation system
13. RAS/WAS splitter box
14. RAS line to secondary treatment
15. WAS line to digester
16. Aerobic digester
17. Sludge storage tank
18. Sludge drying beds
19. Sludge truck loading station

Town of Hertford WWTP, NC0021849
B3. Process diagram key Sheet 1
1. Mechanical bar screen with debris washer
2. Parshall flume with flow measurement
3. Grit removal system with pump, water separator and conveyor belt
4. Influent well with three pumps
5. Oxidation ditches with mechanical rotating mixers (3)
6. Mixed liquor splitter box
7. Secondary clarifiers (2)
8. Tertiary filters
9. Chlorine injection and contact tank
10. Sulfur dioxide injection
11. Effluent pumps and flow metering
12. Spray irrigation system
13. RAS/WAS splitter box
14. RAS line to secondary treatment
15. WAS line to digester
16. Aerobic digester
17. Sludge storage tank
18. Sludge drying beds
19. Sludge truck loading station

I'ovJtj C>,- v4 vJ TF �16 oo Z1 g4a . �3> Z- -

Town of Hertford WWTP NCO021849
B3. Process description Sheet 2
The treatment facility is a 0.700 MGD rated activated sludge process with tertiary treatment. The
facility has been in operation since 2008. This facility replaced a 0.300 MGD secondary treatment
facility.
Preliminary Treatment (Numbers 1-4)
The wastewater enters the facility via two force mains (one for the Town of Hertford and one
for the Town of Winfall). It first passes through mechanical screens with trash washer. It then
passes through a parshall flume with flow measurement. It next passes through grit removal
consisting of continuously rotating paddle,'grit pump and cyclone water separator with
conveyor. The trash and grit are removed from the site for landfill disposal. It then enters the
influent pump station, consisting of three pumps, that sends it to the oxidation ditches.
Secondary Treatment (Numbers 5-7)
The secondary system consists of three mechanically aerated oxidation ditches, splitter box and
two secondary clarifiers.
Tertiary Treatment/Disinfection/Effluent Disposal (Numbers 8-12)
The tertiary treatment, after clarification, consists of two parallel disk filters, chlorine injectors
and contact tanks. The disk filters are rated for 1.0 MGD each, and each contact tank will
provide 30 minutes of contact time at that rate. After disinfection, there is the effluent pump
station, consisting of three pumps, that sends the treated water either to the Perquimans River,
or to the spray field storage tank. After the pump station is sulfur dioxide injection, for de -
chlorination. The choice of discharge is based on several conditions. Spray field operation is
handled under permit WQ0021289.
Sludge Handling (Numbers 13-18)
The settled solids from the clarifiers either returns to the influent pump station as Return
Activated Sludge (RAS) or to the aerobic digester as Waste Activated Sludge (WAS). The choice
is made at the RAS/WAS splitter box. Waste sludge is sent to the aerobic digester, where it is
held for at least 30 days under aeration, supernatant is withdrawn and returned to the plant,
and then sent to the sludge storage tank to be held until final disposition. The sludge can either
be sent to the drying beds to be dewatered and disposed of, or sent to the truck loading station
and be hauled to approved fields to be disposed of as a liquid. Sludge operations are handled
under permit WQ0020239.

To w ►.,1 o G H 2D VJ W
SµEEr 3
9
DRAWNGS. NOTIFY NCDENR LAND QUAL
USION CONTROL MEASURES AS SHOWN ON/NR
tT� LoVll
�RIOR TO LAND BING
TION.
4ND INSTALL NEW SITEFENCINGFENCNG ASSHOWN PROVIDE SECURITY DURING CONSTR
. S 3 L
GRADING AT NEW STRUCTURES.
L�
1
i CTION ON THOSE STRUCTURES THAT OT IMPACT THE CURRENT OP ATION OF THE
3
HOS RUCTURES INCLUDE: HEADWORKS,ATION BASIN, CLARIFIER, U AVIOLET
N AND ISK FILTERS, EFFLUENT PUMP ST, DISTRIBUTION BOX, AER IC DIGESTER,
EED FA ITIES, EFFLUENT FORCE MAIN AIFFUSER AND ALL SPR IRRIGATION
gqR GAR
INCLUDING UMP STATION AND STORAGE.
SCREEN REMOVAL
(PING MAY B INSTALLED WITH THE EXCOF THE CDNNEC 10 THOSE TREATMENT
PIPES THAT A IN SERVICE. PIPING IN REA OF NEW 5 GE LOADING STATION CAN
INFLUENT
;TALLED UNTIL 1H DEMOLITION OF THE EG HEADWORK S COMPLETED.�LET10N
(1.0 MGD)
OF THE NEW EATMENT UNITS ACCEPTAN BY THE ENGINEER, THE UNITS'UT
IN SERVICE IN THE LOWING ORDERIPES
REQUIRED TO DIVERT INTO NEDWO 5 FACILITY. PLUG AND ABANDONLINES
LEFT IN PLACE DEMOLISH THE EXIDWORKS STRUCTURE AND COMPLETERETURN
'ING AND SLUDGE LOADING STAn N.
CHLORINE DISINFECTION SYSTEM E FLDIVERTED TO NEW ULTRAVIOLET DISINFECTION.
ATE WTH PLANT PERSONNEL ON DO TIOF THE CHEMICAL FEED SYSTEM.
ANT PERSONNEL DIVERT FLOW TO NEW ATION BASIN AND CLARIFIER. PLANT PERSONNEL
AEflD&C%
RAIN EXISTING CLARIFIER AND REMO FIR SERVICE, CONTRACTOR SHALL MODIFY AS REQUIRED.
DKIESIM
NEW PIPING AS SHOWN AND HAVE,IALANT P NNEL RETURN TO SERVICE WHEN READY.
EXISTING AERATION BASIN FR SERVICE. CONT CTOR WILL TRANSFER (PUMP) CONTENTS
ING AERATION BA5IN TO DIS IBUTION BOX. ANY AINING SOLIDS TO BE REMOVED AND
OF IN EXISTING SLUDGE PING BED. CONTRACTOR 0 POWER WASH WALLS AND FLOOR
INSTALLATION OF AERATION SYSTEM.
STRUCTU I INCLUDING DISTRIBUTION BOX, E TING AEROBIC DIGESTER, AND
CONTAC CHAMBER..
SLUDGE
AND I TALLATION OF SIDEWALKS AND DRIVES SHOU BE COMPLETED AT THIS TIME.
DRYING
DED AND MULCHED IN ACCORDANCE WITH THE SPE ATIONS.
BEDS
/CONTRACTOR
1
CONTRACTOR ASSUME CONTROL OF THE 1REAIMENT PROCESSY-PASS STRUCTURES.
R STRUCTURE BYPASS SHALL BE PERFORMED BY THE PLANT PERS MEL AT THE
ACTOR. ANY TEMPORARY BYPASS PUMPING SHALL BE PROVIDED BY CONTRACTOR.
D DISINFECTION SHALL BE MAINTAINED AT ALL TIMES. ANY CHANGES THE ABOVE
IST BE APPROVED BY THE ENGINEER, ANY REOURED SHUTDOWN OF THE FACILITIES UST BE
WITH THE TOWN AND THE ENGINEER 48-HOURS PRIOR TO BEGINNING WORK.
✓
_D EQUIPMENT SHALL REMAIN THE PROPERTY OF THE TOWN.
I
ALL BE RESPONSIBLE FOR DISPOSAL OF ALL SLUDGE.
-
FL�LoS
30
30
aim
25.
FILTER EFFLUENT
MAX FLOW EL 10.45
3"0 FM FROM
TOP WAL
AVG FLOW EL 10.16
20
.
20
WINFALL
EL 17.0C
Z . _ ......
BAR PARSH ALL GRIT
I Q
12"0 FM FROM
SCREENS FLUME CHAMBER WI
15
HERTFORD
15
INVERT 10
;TREATED
RT
._
9.92
10
EL 14.DO
_
FLUTAE INEL
-
1 1�
EL 14.00
EFFLUENT ►
F LIME OUT
01 SLAB
TO RIVER OR, 5
EL 13.75
EL 12.83
-
SPRAY FIELD
8OT SLAB
EL 11.42
IT
0
EL 6.42
I 0
WET WELL INV
PROPOSED DISK FILTER &
EL -1.001
EFFLUENT PUMPS
(SHEETS M18 THRU M21)
-5
INFLUENT FEADWORKS
(SHEETS MI THRU M4)
Ilttll/lllq//�',/
H ARO�
4495 GREEN �I„FILE
WATER. WASTEWATER, sLZE
i
303 N. 00I DBBORO ST.
m
FEV610N
DATE
BY
I DATE NARY 2007
ADDED GENERAL NOTE
10/18/05
H8
SCALE
HOR2
pRDJE'� Ho D5-Dz7
CADFLE: HER7F\05D770_
ASCII RIF! DOI75a+T 1
PLOT DATE:
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�EADWORKS _
BASIN
_
. _ BOX �.
CLARIFIER J
I
I
;
PROPOSED 30'
MANHOLE 7 —�
MANHOLE 17 _—
SWING GATE
oFIER
I 1
i
f0RCE MAIN -
I
.
FLOW METER
1
I
FORCE MAIN
I I
PROPOSED MH No T ATM
SEE SHEET C5 'P_STA7IPROPDN_ _
_
I
SED
2----
HEADOWORKS FACILITY
I
T INS -- --_
j
.DING_TAW _ ]
K TA NK _
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34 OgADING STATION
PROPOSED 3D' I t uts -
SWING GATE N 54 MON DRAIN I
I I � �� JJ{OLONG TINK _;
iP4MP-ST"DON
INSTALL NEW RPZ VALVE AND \� 2 DUSTING � tt �ff�
WATER METER PER DETAILS ON POTABLE i WATER
DETAIL SHEET D5. �,, tT t R STASH. -�
o
RHO IL_-
8
—
I
� a
I � i
� i WLr11�
�, i I• FORS:
i I I
� I
i
� I I
EXISTING
I GRAVEL
f GRIN'
I
N
� I
0 1
INEW CHAIN -LINK
i WYE FOR
k I)UT, TYP OF 2
,``pWuupHH�� N
.•`��H CAROB
_ ./�
J `L /o�y�
--
4495 GREEN -'4N
L�G WATER, WASTEWATER, SURVE N
303 K 0OLD8130R0 Err
TO REMARKS _.T► _
INFLUENT HEADWORKS - PLANT IN FROM TOWN OF HERTFORD _-__-
INFLUENT HEADWORKS --- PLANT INFLUENT FROM TOWN OF WINFALL __-
AERATION BASIN -__---- SCREENED INFLUENT _-- _-'—.-
---- —
-C In T-- _ _ --
&SBB"------
T -- -- -----
ABANDON
NOT USED - - - ---
USED - - - -
U3TATION BASIN ----
-- - ---
__
ROW METER
ML- EFFLUENT - TO FLAW METER -_-- ---_--
DIFFUSER
TREATED EFFLUENT - RNER DISCHARGE
HUM TANK _ _..
------
_TREATED EFFLUENT - SPRAY FIELD-- --_-
_
.-
USED -- - . - --- -
SFER-STX-W- _OT
ETURN ACTIVATED SLUDG
RN A TIVATID SLUDGF-..-- --- - -
-
.-AR
SFER STATION _ _ _
TURN ACTIVATED SLUDGENEW-
-_.
WASTE SLUDGE
-- ----_--_-SCUM
LINE -TO uNE 1 ABAN00N Al --
SCUN LINE - TO AEROBIC DIGESTER
_
.E SCUM STATION
CLARIF] SCUM UNE-TO S§UM SLDON-ADD LEAN
WASTE SLUDGE
1YING BEDS _----
WASTE 9JJDGE BED- TO LINE22• ABANDON REMAINDER
DLDING TANK _- -
WASTE SLUDGE
- _
NH.I._
..DIGESTER DECANT --- -- ---- -----------_.
_ -- -
NOT USED -- -
MH PB ----
FILTER BACKWASH__ --- -
)ADING STATION
_ WASTE SLUDGE
MIL _-
SANITARY SEWER SEANCE TIE INTO EX SERVIOE
RANT _- -_--
- POTABLE WATER SUPPLY ---
MH 044
AERATION BASIN DRAIN - - ----
MH_LT -- --- ---
-
---
-SLUDGE H ING TANKNOT
NOT USED
- SEE SITE PLAN
MIXED LIQUOR - 70 BE CONNECTED TO FUTURE CLARIFIER__
ING WATER SERVICE.
. QW, POTABLE WATER SERVICE - A_RPZ V AND METER
RANT -
POTABLE WATER SUPPLY
_-_
- SEE SITE .PLAN
-_-.-- _
RAS - TO BE CONNECTED TO FUTURE CLARIFIER
RANT A-HMWQLCS
POTABLE WATER SUPPL1-0MDJ0-HEADWORKS WASHLRII
RANT - -
P_DSABLE_ WAffB$IPPI.Y
RANT---------
PQ ABLE WATER SUPPLY
RANIA-MTROS_ 11LIX
_.R0TAB WATERY.
-
MMH
- _
R
SLUDG EBRETRN
MH 02
SLUDGE RETURN
_
LADING STATION _.
_ BUDGE RETURN—
MH IL �_-
_-SU%RRETIFLN.-- - -. -..
'Swuwu -- - - - -
----
--&-UDGE-R TURN . -- --- - - --
CONTACT LAM
i PUMP SEAL WAM DRAW-
METER PIT DRAIN
XMG TANK _
BLOWER LOCATED AT SLUDGE HOLDING TANK_
MANHOLE Nam. _
PUMP STATION DRAIN--
UUMP STATION
REUSE COMPIJA-NT Ste- -- ----------
-NA
LD-_-_
_BRAY IRRIGATION - - -
_
NKRETAIN
TA-- --
-
PROTECT ANO R AIN
iFEIt STATION --
- ----
CHLORINE FEED
.
_MH #§_
_ - --,--- -
DISK _F.ILTER PIT DRY LML -. --
_
MH 055 ---
---
SLUDGE RETURN _
ALTERS -
- CLARIFIER GENII - - --
1�R� --
IFlEft FFTLLIENT --- -- -
- - - —_
_
NON_P
_ AB
_ POTABLE
_
STATION -_ _ _
CHLORINATION- - -
--------
_ _
-CHLORINATION
LULDNG
POTABLE WATER SUPPLY.--- - — - _- _
TER POND DISCHARGE _
_TNALN PIT GRAIN_
SYMBOL. LEGEND
EXISTING PROPOSED/NEW
GUY POST AND WIRE -----
FIRE HYDRANT
WATER METER o ■
POWER POLE 0 0
VALVE ca ►�
YARD HYDRANT
IRON PIPE OBE •w
SEWER MANHOLE Q
CHAIN -LINK FENCE ----
STRUCTURE
ROADWAY E°P ._ A�mLT
gm -
SIDEWALK Lam? T_J O
PROCESS PIPE - - -
DRAIN PIPE ------
SLUDGE PIPE -----
CHEMICAL PIPE -
POTABLE WATER PIPE - -- -
OVERHEAD ELECTRIC - -----
PROPERTY LINE -------
NOTES
SEE ALL "C7 SHEETS FOR UNDERGROUND UTILITY
do WASTEWATER PI.4NT OPERATION NOTES
FEVMM DATE BY I DATE ANY 2007
DIAMETER DIGESTER 0 TB 0 HB SCALE PRaEcr No:05-027
52B77FF��
IASIN-TF.B. SB CHANNEL 2 DT/DB HB HON2 AN3040M A CN EYE: 8175 27C3
T
CONTACT CHAMBER 2 Ot 07 HB PLOT DATE: HEe
ED TANK 20' SE 5 07/07 HB MAP No.
-- •-- - wwT Not C3 of 10 RACK

McKay, James
From:
'Mckay, James
Sent:
Tuesday, September 20, 2011 11:17 AM
To:
Leggett, Michael
Cc:
Gore, Deborah
Subject:
RE: Hertford/Winfall
Michael,
Thank you for your help. I have pulled DMR flows for 2009 — 2011 YTD, and they show a decrease in flow each year for
the Hertford WWTP. For 2011 through July, they averaged-0.499 MGD, which gets them out of the 80% range where
they have to start to expand their plant. I have a call in to Al Hodge to discuss this further.
Thanks again,
Jim McKay, Environmental Engineer
NC DENR / Division of Water Quality / Surface Water Protection Section
Point Source Branch
1617 Mail Service Center, Raleigh, NC 27699-1617
919/807-6404 (work); 919/807-6495 (fax)
*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.
From: Leggett, Michael
Sent: Tuesday, September 20, 2011 8:19 AM
To: Mckay, James
Cc: Gore, Deborah
Subject: Hertford/Winfall
Jim,
We contacted the regional office in regards to the Winfall collection system. It appears that they have done some
rehabilitation work on their system in an effort to reduce their 1/1 issues. If you would like, we could request their flow
data from their metered location. I will be happy to assistance in any way. Thanks.
Michael W. Leggett, P.E.
PERCS Unit
919-807-6312
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 unless the content is exempt by statute or other regulation.
From: Bryant, J
Sent: Wednesday, September 14, 2011 3:31 PM
To: Gore, Deborah
Cc: Leggett, Michael
Subject: RE: Hertford/Winfall

Hi Deborah and Michael,
Attached you should find two letters from the Town of Winfall. I have made a couple of site visits and met with them
including the mayor, their engineer, operator, and finance person due to flow issues with Hertford and according to my
last visit when the Finance employee pulled billing records from Hertford it appeared that their flows have been reduced
over time. I will by no means say that their problems have been totally solved but feel that they are in better condition
today than they were six months to a year ago.
J. Wayne Bryant
WaRO
From: Gore, Deborah
Sent: Wednesday, September 07, 2011 3:04 PM
To: Bryant, J
Cc: Mckay, James; Leggett, Michael
Subject: Hertford/Winfall
Hey,
I1talked with Jim McKay a little bit ago. He is writing the permit for Hertford. Hertford has had some problems with 1/1
and they have been working diligently to correct their 1/1 issues. They accept wastewater from Winfall who has not been
as diligent and their 1/1 issues contribute to Hertford having flow violations. Jim asked if there is anything we can do
through collection systems to force Winfall to take care of their system. Hertford has an individual permit WQCS00209
and Winfall has a deemed number, WQCSD0183.
2T .0403 (1) says that the system shall be operated to prevent discharge to land or surface waters and to prevent any
contravention of groundwater of surface water standards. Hertford has reported a total of 9 SSOs since 2003 [2003 -1;
2005 — 3; 2006 — 3; 2007 —1; 2008 —1] and Winfall has reported 2 [2006 —1; 2009 —1]. So, it appears that they've been
operating well enough to prevent SSOs. I don't know that excess flow would really be considered contravening surface
water standards since the other limits are being met [I think that's what Jim said].
Winfall does have permit WQ0015344 (system extension) that mentions the flow agreement between Hertford and
Winfall of 100,000 gpd, so if the flow leaving Winfall is greater than 100,000 gpd, perhaps we can get them to do some
work based on that. I could write a letter to Winfall (or Hertford) requesting the flow data and go from there.
Any other thoughts or suggestions?
Deborah
Deborah Gore
PERCS Unit Supervisor
919-807-6383
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.

NCO021849
Hertford WWTP DMR Data
Date
Average
Flow, MGD
Maximum
Minimum
( rn�� rI pP" /- I rn
a B r �.
Jan-09
0.631
0.790
0.540
2009 Average flow, MGD
0.621
88.71%
Feb-09
0.519
0.585
0.440
2010 Average flow, MGD
0.533
76.14%
Mar-09
0.686
1.023
0.490
2011 Average flow YTD, MGD
0.499
71.29%
Apr-09
0.987
1.509
0.651
May-09
0.445
0.557
0.392
Jun-09
0.416
0.639
0.336
Jul-09
0.447
0.835
0.338
Aug-09
0.591
1.225
0.410
Sep-09
0.556 ''
0.859
0.431
Oct-09
0.420
0.491
0.365
Nov-09
0.771
2.017
0.434
Dec-09
0.987
1.509
0.651
Jan-30
0.817
1.072
0.635
Feb-10
0.837
1.362
0.598
Mar-10
0.742
1.342
0.521
Apr-10
0.612
0.915
0.462
May-10
0.506
0.746
0.383
Jun-10
0.407
0.497
0.317
Jul-10
0.335
0.380
0.284
Aug-10
0.339
0.470
0.290
Sep-10
0.421
2.738
0.283
Oct-10
0.580
1.205
0.400
Nov-10
0.404
0.486
0.361
Dec-10
0.399
0.468
0.343
Jan-11
0.528
0.696
0.352
Feb-11
0.604
0.835
0.481
Mar-11
0.591
0.929
0.477
Apr-11
0.604
0.836
0.478
May-11
0.432
0.518
0.383
Jun-11
0.368
0.429
0.329
Jul-11
0.365
0.603
0.305
0.560
2.738
0.283
Average
Maximum
Minimum
Limit:
0.7 MGD
0.470
12 month average
67.14%
of 0.7 MGD flow limit
0.499
Y. T. D. Average
71.29%
of 0.7 MGD flow limit

Post Office Box 275
Frederick L. Yates, Mayor Winfall, North Carolina 27985
Brenda G. Dillard, Town clerk Telephone: [phone]
Fax: [phone]
Email: [e-mail]/Wcbsite: townofwinfall.com
July 25, 2011
Town of Hertford
114 West Grubb Street
P.O. Box 32
Hertford N.C.27944
Re: Town of Winfall's 1 & I
Dear Mr. Christensen:
I � rlE_ 11 r.,' z, !4 '"? :era la",d;
JUL 2-72011
Ton r, i .ouncil.
Donna Mumn,vt , Mayor Pro -Teat
e tbie Whedbee
Cynf t:s Stallings
Edda' Melds 1r.
I am writing this letter to explain the repair work we have done for our Sec4er Collection
System. We hope that by doing these repairs our system will work more -'fficiently so
we can better serve our residents. Below are several more things have bee li added to our
list that we have done to the system and where they are located.
• Repaired 3 man holes on Wiggins Road with cement and pla ,:i;r.
• Placed pans in 5 manholes on Wiggins Road.
• Repaired 1 manhole on Winfall Blvd. with cement and plaster.
• Placed pans in manholes located at Pumping Station 1 area, because they
were under water.
• Repaired leak at manhole near 224 West Mein Street.
• Repaired sewer service infiltration at 103 Main Street.
• Repaired manhole at pump station # 5 at Creek Drive.
We are continuing to inspect our manholes and we are doing repairs as nE a led to combat
any underlying problems that we might face.

Should you have any questions or concerns please contact the Town Office ;.t (252)426-
5015. Thank you for your patience in this matter.
Sincerely,
T f W'
Frederick L. aups, ayor
CC: Mr. Wayne Bryant, NCDENR
FLY!hd

Post Office Box 275
Frederick L. Yates Mayor . Winfali, North Carolina 27985
Brent& G. Dillard, Town Clerk Telephone: [phone]
Fax: [phone]
Email: winfall@inteli rt.com / Websitc: lownofwinhil.com
March 30, 2011
NCDENR
943 Washington Square Mall
Washington, N.C. 27889
Dear Mr. Bryant,
Torn Cmnrcil:
Donnahluman rt, Mayor Pro -Tern
::) Dbbie Whedbee
Gym t v a Stallings
Ed•ltt Fields Jr.
I am writing this letter to explain the repair work we have done for our Selirlx Collection
System, We hope that by doing these repairs our -system will work more Efficiently so
we can better serve our residents. Below explains (4) things that we hai e: done to the
system and where they are located.
• Repaired 3 man holes on Wiggins Road with cement and plaster.
• Placed pans in 5 manholes on Wiggins Road.
• Repaired 1 manhole on Winfall Blvd. with cement and plaster,
• Placed .pans in manholes located at Pumping Station 1 a -ea; because they
were under water.
We are continuing to inspect our manholes and weare doing repairs as netx.ed to combat
any` underlying problems that we might face.
Should you have :any questions or concerns please contact the Town Offi,se at (252)426=
501S. Thank you for your patience in.this matter.
Sincerely;
o •n of in 1
Frederick L. ates, Mayor
FLY/bd

J. SIDNEY ELEY
MAYOR
JOHN D. CHRISTENSEN
TOWN MANAGER
CINDY E. SHARBER.
CLERK
BENJAMIN M. GALLOP
TOWN ATTORNEY
August 31, 2011
Mr. Jim McKay
NCDENR
Division of Water Quality
1617 Mail Service Center
Raleigh, NC 27699-1617
Subject: Expansion Request
NPDES Permit NC 0021849
Dear Mr. McKay,
COA MISIONERS:
CARLTON A. DAVENPORT, JR.
ANNE F. WHITE
ED LANE `
LILLIAN HOLMAN
SEP 0 1 201
Thank you for the reminder call with regards to our expansion request and your response of
February 10, 2011. Following your response we spent significant time examining our
alternatives so thank you for your patience in awaiting this response.
First of all let me say that we do not fully agree with your comments regarding I&I. I feel that
Hertford has been quite proactive in working on our I&I. We have been quite successful in
reducing our peak flows during heavy rain events. Hertford will continue to work on I&I on a
regular basis. As for the Town of Winfall, let me say that our combined treatment plant was
the result of an agenda to consolidate facilities. This was promoted by the state and federal
funding agencies. As a result Hertford is treating Winfall's wastewater but have no control
over the maintenance of their system. The result of that is seen in your February 10, 2011
letter where Hertford is criticized for uncontrolled I&I which I feel is primarily Winfall's I&I.
Hertford's plan for expansion are therefore held hostage by Winfall's inability to maintain
their system. Hertford is now backed into a corner where we must consider what actions we
can take to rectify the situation, actions that are NCDENR's responsibility.
In conclusion, we suggest that you look again at Hertford's situation and see if NCDENR has
a way of considering it as a request for an expansion based solely on Hertford's flow. I know
that this is a unique concept but considering your promotion of joint facilities it is one that
will arise again.
Please feel free to call if you have any questions. Please note that after today, I will be retired
as Hertford's Town Manager and Brandon Shoaf will be replacing me so please contact him.
in the future. His contact information is the same as mine.
Town of Hertford • P.O. Box 32. 114 West Grubb • Hertford, North Carolina 27944
Phone [phone] • Fax [phone] • [e-mail]

Sincerely
Christensen
Copy: Brandon Shoaf
E. Leo Green, Green Engineering
Town of Hertford • P.O. Box 32. 114 West Grubb • Hertford, North Carolina 27944
Phone [phone] • Fax [phone] • [e-mail]

North Carolina Department of Environment
and Natural Resources
Division of Water Quality
NPDES Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Attention: NPDES Unit
January 12, 2011 C11* 6—
��/aA411
�1/f �-
p,P eyI i'-'e',
SUBJECT: Application f DES Permit Renewal o+A -ovt e� ✓'-i
Renewal No. NC0021849
Town of Hertfo 3 ��+1 K n•.aX
Perquimans County, North Carolina K �c �{,st , F/o r✓.% �!� '� 0
PN: 10-115
w (OK - 41i�v A cB 1-;II`
Dear Review Agent: S MeA *i r4
Please find attached Application for NPDES Permit Renewal for th own of Herford.
Please note that the Town is requesting an upgrade to its treatment plant that will bring
the design flow rate up to 0.975 MGD from its current permitted flow of 0.700 MGD. Thi I?
project is due for completion in 2011, after which the current NPDES permit will no longer
required. �
I trust the information prow ed is helpful in your review of this renewal application. If
you should have any questions or quire additional information, please call.
Respectfully,
Michael J Novak, P.E.
MJN ti0 WAJ P A'.
Enclosures: As stated.
cc: Mr. John Christensen — Manager, Town of Hertford
GREEN ENGINEERING, PLLC
WAHERTFU0115\0ffice\NPDES Coverltr.doc WATER - WASTEWATER - SURVEYING • PLANNING - PROJECT MANAGEMENT 01/12/11 955 AM
www.greenengineering.com
303 N. GOLDSBORO ST. - PO BOX 609 • WILSON N.C. 27893 1708 TRAWICK RD. - SUITE 105 • RALEIGH N.C. 27604
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ENGINEERING ALTERNATIVES
ANALYSIS (EAA)
Of
WASTEWATER TREATMENT PLANT
EXPANSION
Located in:
Town of Hertford, North Carolina
P
kw"
January12 2011 Y �-► ���1���
©30 #10 I J
.."NO 47^Um
Prepared by: F 1ay.'..1
Green Engineering, PLLC�"
Post Office Box 609 t OH f
Wilson North Carolina 27893 44
Green Engineering Project No.: 10-115
1
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GREEN ENGINEERING

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Town of Hertford NCO021849 Renewal Pasquotank
FORM
2A NPDE FORM 2A APPLICATION OVERVIEW _
NPDES
APPLICATION OVERVIEW
Form 2A has peen °developed m a'm - dular format and cons'ists.of'a "Basic Application Information" packet
an`d a "Supplemental Application,informatlon"'packet. The'Baslc'Application l'nformatlon-packet is dlvlded'
into two;part& All applicants must complete Parts - -and C: Applicants :with. a design:#low:greater than or'
equal to 01 mgd must also complete Part B Some"applicants must also=complete the Supplemental
Application Information packet The foliowmg items.explaln.whlch Darts.of Form 2A you must complete.
BASIC APPLICATION INFORMATION:
A. Basic Application Information for all Applicants. All applicants must complete questions A.1 through A.8. A treatment works
that discharges effluent to surface waters of the United States must also answer questions A.9 through A.12.
B. Additional Application Information for Applicants with a Design Flow z 0.1 mgd. All treatment works that have design flows
greater than or equal to 0.1 million gallons per day must complete questions 13.1 through 6.6.
C. Certification. All applicants must complete Part C (Certification).
SUPPLEMENTAL APPLICATION INFORMATION:
D. Expanded Effluent Testing Data. A treatment works that discharges effluent to surface waters of the United States and meets
one or more of the following criteria must complete Part D (Expanded Effluent Testing Data):
1. Has a design flow rate greater than or equal to 1 mgd,
2. Is required to have a pretreatment program (or has one in place), or
3. Is otherwise required by the permitting authority to provide the information.
E. Toxicity Testing Data. A treatment works that meets one or more of the following criteria must complete Part E (Toxicity Testing
Data):
1. Has a design flow rate greater than or equal to 1 mgd,
2. Is required to have a pretreatment program (or has one in place), or
3. Is otherwise required by the permitting authority to submit results of toxicity testing.
F. Industrial User Discharges and RCRAICERCLA Wastes. A treatment works that accepts process wastewater from any
significant industrial users (SIUs) or receives RCRA or CERCLA wastes must complete Part F (Industrial User Discharges
and RCRAICERCLA Wastes). SIUs are defined as:
1. All industrial users subject to Categorical Pretreatment Standards under 40 Code of Federal Regulations (CFR) 403.6 and
40 CFR Chapter I, Subchapter N (see instructions); and
2. Any other industrial user that:
a. Discharges an average of 25,000 gallons per day or more of process wastewater to the treatment works (with certain
exclusions); or
b. Contributes a process wastestream that makes up 5 percent or more of the average dry weather hydraulic or organic
capacity of the treatment plant; or
c: Is designated as an SIU by the control authority. - ��/
1 F5 . �`J
G. Combined Sewer Systems. A treatment works that has a combined sewer system must complete art Ine Sewer
Systems). 3 2011
ALL APPLICANTS MUST COMPLETE PA -T (CERTIFICATION
r. .DEiJR-�NATER'QUA
�nwwLIT
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 1 of 23

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Town of Hertford NCO021849
Renewal
Pasquotank
-�b }
�-'-Bkgtd Opt ioN INFORMATION
Wi
,,-.
pN
All treatment works must complete questions A-1 through A.8 of this Basic Application Information Packet.
A.I. Facility Information.
Facility Name Town of Hertford - WWTP
Mailing Address Post Office Box 32
Hertford, North Carolina 27944
Contact Person John Christensen
Title Town Manager
Telephone Number [phone]
Facility Address
(not P.O. Box) Hertford, North Carolina
A.2. Applicant Information. If the applicant is different from the above, provide the following:
Applicant Name
Mailing Address
Contact Person
Title
Telephone Number
Is the applicant the owner or operator (or both) of the treatment works?
0 owner 11 operator
Indicate whether correspondence regarding this permit should be directed to the facility or the applicant.
0 facility [I applicant
A.3. Existing Environmental Permits. Provide the permit number of any existing environmental permits that have been issued to the treatment works
(include state -issued permits).
NPDES NCO021849 PSD
UIC Land App WQ0021289
RCRA Other
A.4. Collection System Information. Provide information on municipalities and areas served by the facility. Provide the name and population of each
entity and, if known, provide information on the type of collection system (combined vs. separate) and its ownership (municipal, private, etc.).
Name Population Served Type of Collection System Ownership
Town of Hertford 2,160 Sgperate Hertford
Town of Winfall 586 Sgperate Winfall
I Total population served 2,746
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 2 of 23

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Town of Hertford NCO021849 Renewal Pasquotank
A.S. Indian Country.
a. Is the treatment works located in Indian Country?
❑ Yes ® No
b. Does the treatment works discharge to a receiving water that is either in Indian Country or that is upstream from (and eventually flows
through) Indian Country?
❑ Yes ® No
A.6. Flow. Indicate the design flow rate of the treatment plant (i.e., the wastewater flow rate that the plant was built to handle). Also provide the
average daily flow rate and maximum daily flow rate for each of the last three years. Each year's data must be based on a 12-month time period
with the 12th month of "this year" occurring no more than three months prior to this application submittal.
a. Design flow rate 0.975 mgd
Two Years Ago Last Year This Year
b. Annual average daily flow rate 0.316 MGD (2008) 0.499 MGD (2009) 0.596 MGD (2010).
C. Maximum daily flow rate 0.621 MGD (2008) 1.225 MGD (2009) 2.738 MGD (2010)
A.7. Collection System. Indicate the type(s) of collection system(s) used by the treatment plant. Check all that apply. Also estimate the percent
contribution (by miles) of each.
® Separate sanitary sewer %
❑ Combined storm and sanitary sewer %
A.8. Discharges and Other Disposal Methods.
a. Does the treatment works discharge effluent to waters of the U.S.? ® Yes ❑ No
If yes, list how many of each of the following types of discharge points the treatment works uses:
I. Discharges of treated effluent 1
ii. Discharges of untreated or partially treated effluent 0
iii. Combined sewer overflow points 0
iv. Constructed emergency overflows (prior to the headworks) 0
V. Other 0
b. Does the treatment works discharge effluent to basins, ponds, or other surface impoundments
that do not have outlets for discharge to waters of the U.S.? ❑ Yes ® No
If yes, provide the following for each surface impoundment:
Location:
Annual average daily volume discharge to surface impoundment(s)
Is discharge ❑ continuous or ❑ intermittent?
C. Does the treatment works land -apply treated wastewater?
If yes, provide the following for each land application site:
Location: Adjacent to WWTP
Number of acres: 78.11 (WET)
mgd
® Yes ❑ No
Annual average daily volume applied to site: 0.273 mgd
Is land application ❑ continuous or ® intermittent?
d. Does the treatment works discharge or transport treated or untreated wastewater to another
treatment works? ❑ Yes ® No
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 3 of 23

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Town of Hertford NCO021849 Renewal Pasquotank
If yes, describe the mean(s) by which the wastewater from the treatment works is discharged or transported to the other treatment works
(e.g., tank truck, pipe).
If transport is by a party other than the applicant, provide:
Transporter Name
Mailing Address
Contact Person
Title
Telephone Number ( 1
For each treatment works that receives this discharge, provide the following;
Name
Mailing Address
Contact Person
Title
Telephone Number
If known, provide the NPDES permit number of the treatment works that receives this discharge
Provide the average daily flow rate from the treatment works into the receiving facility. mgd
e. Does the treatment works discharge or dispose of its wastewater in a manner not included
in A.8. through A.8.d above (e.g., underground percolation, well injection): ❑ Yes ® No
If yes, provide the following for each disposal method:
Description of method (including location and size of site(s) if applicable):
Annual daily volume disposed by this method:
Is disposal through this method ❑ continuous or ❑ intermittent?
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 4 of 23

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Town of Hertford NCO021849 Renewal Pasquotank
WASTEWATER DISCHARGES:
If you answered "Yes" to question A.8.a, complete questions A.9 through A.12 once for each outfall (including bypass points) through
which effluent is discharged. Do not include Information on combined sewer overflows In this section. If you answered "No" to question
A.8.a, go to Part B, "Additional Application Information for Applicants with a Design Flow Greater than or Equal to 0.1 mgd."
A.9. Description of Outfall.
a. Outfall number 001
b. Location Hertford
27944
(City or town, if applicable)
(Zip Code)
Perquimans
North Carolina
(County)
(State)
360-12'-19"
760-28'-34"
(Latitude)
(Longitude)
C. Distance from shore (if applicable)
0
ft•
d. Depth below surface (if applicable)
0
ft•
e. Average daily flow rate
0.596
mgd
f. Does this outfall have either an intermittent or a periodic discharge?
® Yes ❑ No
(go to A.9.g.)
If yes, provide the following information:
Number f times per year discharge occurs:
360
Average duration of each discharge:
Average flow per discharge:
mgd
Months in which discharge occurs:
January - December
g. Is ouNall equipped with a diffuser?
® Yes ❑ No
A.10. Description of Receiving Waters.
a. Name of receiving water Perquimans River
b. Name of watershed (if known) Pasquotank Sub -Basin
United States Soil Conservation Service 14-digit watershed code (if known): 03010205090030
C. Name of State Management/River Basin (if known) Pasquotank
United States Geological Survey 8-digit hydrologic cataloging unit code (if known): 03030001
d. Critical low flow of receiving stream (if applicable)
acute cfs chronic cfs
e. Total hardness of receiving stream at critical low flow (if applicable): mg/I of CaCO3
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 5 of 23

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Town of Hertford NCO021849
Renewal
Pasquotank
A.11. Description of Treatment
a. What level of treatment are provided? Check all that apply.
❑ Primary ❑ Secondary
® Advanced ❑ Other. Describe:
b. Indicate the following removal rates (as applicable):
Design BODS removal or Design CBOD5 removal 98 %
Design SS removal 95 %
60-70 %
Design P removal
Design N removal
Other
C. What type of disinfection is used for the effluent from this outfall? If disinfection varies by season, please describe:
UV
If disinfection is by chlorination is dechlorination used for this outfall? ❑ Yes ❑ No
Does the treatment plant have post aeration? N Yes ❑ No
A.12. Effluent Testing Information. All Applicants that discharge to waters of the US must provide effluent testing data for the following
parameters. Provide the Indicated effluent testing required by the permitting authority for each outfall through which effluent Is
discharged. Do not include Information on combined sewer overflows In this section. All Information reported must be based on
data collected through analysis conducted using 40 CFR Part 136 methods. In addition, this data must comply with QAlQC
requirements of 40 CFR Part 136 and other appropriate QAIQC requirements for standard methods for analytes not addressed by
40 CFR Part 136. At a minimum, effluent testing data must be based on at least three samples and must be no more than four and
one-half years apart.Outfall number: 001
xAVERAGE`DAILYVALUE
4
PARAtY�,ETERC
,
UUnits Number, of Samples
,.{a.•R4,\'..f N..: i, t wYt .r?+.. J.m'E..... ...r. t.. .x\.. .. i,-,ea.. . ..r ..1.. �. 1".53... .rrd,.. - S
pH (Minimum)
7.0
S.U.
7.44
pH (Maximum)
S.U.
Flow Rate
2.738
MGD
0.421
MGD
9 Months
Temperature (Winter)
7.5
°C
19.1
°C
9 Months
Temperature (Summer)
28.1
°C
21.2
°C
9 Months
For PH please report a minimum and a maximum daily value
�' z v MI!JQMUM DAILY
t r AVERAGE DAILY DISCHARGE
,
�
ti POLLUTANT h h{ ML/MDL
i d i
METHOD
r{ r F 4 -,��.k ) .- S
i a r z n4 1 Y ; y
F >v Number of ,� t a 4or.. . t lti, •, C:C h �' +'
�-
�z '..:�:'�
_ .,CS .�.. 4e. _ .�;\• .K »� �.,Ca� eCS _ G. �.5= e.t.a
CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS
BOD5
3.7 1
Mg/1
3.0
Mg/l
14
SM5210B
BIOCHEMICAL OXYGEN
DEMAND (Report one)
CBOD5
#/n 00
#/100
FECAL COLIFORM
43
4.41
14
SM9222D
TOTAL SUSPENDED SOLIDS (TSS)
4.6
Mg/1
3.7
M9/1
14
SM2540D
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 6 of 23

FACILITY NAME AND PERMIT NUMBER: PERMIT ACTION REQUESTED: RIVER BASIN:
Town of Hertford NCO021849 Renewal Pas'quotank
BASICS OPLId"AT WNINFORMAT
ION
APPLICANTS WITH x 76 Iii'llik- T.1.6414-
6A�fidw�'ibIFC�)RM�A�TIONI;FOR"' 3-!,
TMT'&�-'-ADDITIQ MLAJO.'Ci 44T 6�16W
All applicants with a design flow rate z 0.1 mgd must answer questions BA through B.6. All others go to Part C (Certification).
B.I. Inflow and Infiltration. Estimate the average number of gallons per day that flow into the treatment works from inflow and/or infiltration.
125,000 gpd (0.43 — 0.203)
Briefly explain any steps underway or planned to minimize inflow and infiltration.
Since 1995 approximately 1. 6 million has been spent on 1/1 . A S SES was performed in 2009.with
an additional $275,000 of improvements that would complete the Towns overall I/I reduction goals
B.2. Topographic Map. Attach to this application a topographic map of the area extending at least one mile beyond facility property boundaries. This
map must show the outline of the facility and the following information. (You may submit more than one map if one map does not show the entire
area.)
a. The area surrounding the treatment plant, including all unit processes.
b. The major pipes or other structures through which wastewater enters the treatment works and the pipes or other structures through which
treated wastewater is discharged from the treatment plant. Include outfalls from bypass piping, if applicable.
c. Each well where wastewater from the treatment plant is injected underground.
d. Wells, springs, other surface water bodies, and drinking water wells that are: 1) within Y4 mile of the property boundaries of the treatment
works, and 2) listed in public record or otherwise known to the applicant.
e. Any areas where the sewage sludge produced by the treatment works is stored, treated, or disposed.
f. If the treatment works receives waste that is classified as hazardous under the Resource Conservation and Recovery Act (RCRA) by truck, rail,
or special pipe, show on the map where the hazardous waste enters the treatment works and where it is treated, stored, and/or disposed.
B.3. Process Flow Diagram or Schematic. Provide a diagram showing the processes of the treatment plant, including all bypass piping and all
backup power sources or redunancy in the system. Also provide a water balance showing all treatment units, including disinfection (e.g.,
chlorination and dechlorination). The water balance must show daily average flow rates at influent and discharge points and approximate daily flow
rates between treatment units. Include a brief narrative description of the diagram.
B.4. Operation/Maintenance Performed by Contractor(s).
Are any operational or maintenance aspects (related to wastewater treatment and effluent quality) of the treatment works the responsibility of a
contractor? Z Yes 0 No
If yes, list the name, address, telephone number, and status of each contractor and describe the contractor's responsibilities (attach additional
pages if necessary).
Name: Granville Farins
Mailing Address: Post Office Box 1396
Oxford, North Carolina 27565
Telephone Number. [phone]
Responsibilities of Contractor: Sludge Disposal
B.5. Scheduled Improvements and Schedules of Implementation. Provide Information on any uncompleted implementation schedule or
uncompleted plans for improvements that will affect the wastewater treatment, effluent quality, or design capacity of the treatment works. If the
treatment works has several different implementation schedules or is planning several improvements, submit separate responses to question B.5
for each. (If none, go to question B.6.)
a. List the outfall number (assigned in question A.9) for each outfall that is covered by this implementation schedule.
b. Indicate whether the planned improvements or implementation schedule are required by local, State, or Federal agencies.
Z Yes El No
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 8 of 23

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Town of Hertford NCO021849
Renewal
Pasquotank
C. If the answer to B.5.b is "Yes," briefly describe, including new maximum daily inflow rate (if applicable).
Town requests WWTP up2rade to 0.975 MGD.
d. Provide dates imposed by any compliance schedule or any actual dates of completion for the implementation steps listed below, as
applicable. For improvements planned independently of local, State, or Federal agencies, indicate planned or actual completion dates, as
applicable. Indicate dates as accurately as possible.
Schedule Actual Completion
Implementation Stage MM/DD/YYYY MM/DD/YYYY
Begin Construction
- End Construction
- Begin Discharge
- Attain Operational Level
e. Have appropriate permits/clearances concerning other Federal/State requirements been obtained? ❑ Yes ® No
Describe briefly: NSA
B.6. EFFLUENT TESTING DATA (GREATER THAN 0.1 MGD ONLY).
Applicants that discharge to waters of the US must provide effluent testing data for the following parameters. Provide the Indicated
effluent testing required by the permitting authority for each outfall through which effluent is discharged. Do not include information
on combine sewer overflows in this section. All Information reported must be based on data collected through analysis conducted
using 40 CFR Part 136 methods. In addition, this data must comply with QA/QC requirements of 40 CFR Part 136 and other appropriate
QA/QC requirements for standard methods for analytes not addressed by 40 CFR Part 136. At a minimum effluent testing data must be
based on at least three pollutant scans and must be no more than four and on -half years old.
Outfall Number: 001
y
MAXIMUM DAILY"^
z
DISCHARGE
AVERAGE DAILY, DISCHARGE
3 +
C>
ANALYTI A1.9
Conc
t
G Samples
, w
CONVENTIONAL AND NON CONVENTIONAL COMPOUNDS
AMMONIA (as N)
.0.14
Mg/1
.08
Mg/1
14
EPA 350.1
CHLORINE (TOTAL
HACH
<50
Mg/1
<50
Mg/1
14
RESIDUAL, TRC)
Colorimeter
HACH DO
DISSOLVED OXYGEN
7.46
Mg/1
7.22
Mg/1
14
175
TOTAL KJELDAHL
10.16
Mg/l
4.99
Mg/1
3
EPA 351.2
NITROGEN (TKN)
NITRATE PLUS
7.48
Mg/1
2.99
Mg/1
3
EPA 353.2
NITRITE NITROGEN
OIL and GREASE
PHOSPHORUS (Total)
1.73
Mg/1
1.07
Mg/1
3
EPA 365.4
TOTAL DISSOLVED
SOLIDS (TDS)
OTHER
REfER TO THE APPLICATION�OVERVIEW (PAGE 1) TO DETERMINE WHICH OTHER4PARTS
w �' 'z Df FORM2A YOU MUST COMPLETE
, , ,
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 9 of 23

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
Town of Hertford NCO021849
Renewal
Pasquotank
a
Ili
f + I i riJJtC ly�, �t'Lv .int Yi15a 1..jr1� .,r' (11 1 1 f 1 Ijil , 1 f tt`• �V.'1
11FbFt11f;AT10
t 1 �" 7 4 f, 1 rl ..
BAS[C APPL�C TION ` "R
.fr:u Alt.
.711 ..illy.! fs_.,,.• 7t. ..�5 i....t i�ff» .�f.li� C 1.
❑ f � I{ ,.c . r'fld,i-,ti... Y6�.n. 3L..Ft, < .. i4. tf... ..t^;.o �....Y.: ..._.-.. � ...t , . I 1 F.... ,: c .:.I ..
Alt appucantu most complete the Certification Section. Refer to instructions to determine Who Is on officer for the purposes of this
certification. Ali applicants must complete all applicable sections of Form 2A, as explained In the Application Overview, Indicate below which
parts of Form 2A you have completed and are submitting. By signing this certification statement, applicants confirm that they have reviewed
Form 2A and have completed all sections that apply, to the facility for which this application Is submitted.
Indicate which parts of Form 2A you have completed and are submitting:
® Basic Application Information packet Supplemental Application Irrformatlon packet:
❑ Part D (Expanded Effluent Testing Data)
❑ Part E (Toxicity Testing: Biomonitonng Data)
❑ Part F (Industrial User Discharges and RCRAICERCLA Wastes)
❑ Part G (Combined Sewer Systems)
c s j
;tAl.'( IPPUCI�NTSttSAUST C�MPl 7E itiE FOL40ff�I1tiL3 CER7IFICATIO
.-e -m ... ,. ,.�. -f ` .ifs [., .i}. ......t
I certify under penalty of law that this document and all attachments were prepared under my direction or supervision In accordance with a system
designed to assure that qualified personnel properly gather and.evaluate the Information submitted. Based on my inquiryof the person orpersons who
manage the system or those persons directly responsible for gathering the Information, the information is, to the best of my knowledge and belief, true,
accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and Imprisonment
for snowing violations.
Name and official title John Christenwn,Town ana er
Signature
Telephone number 2)1426-1,969
t (( 1
Date signed
Upon request of the permitting authority, you must submit any other Information necessary to assure wastewater treatment practices at the treatment
works or Identify appropriate permitting requirements.
SEND COMPLETED FORMS TO:
NCDENRI DWO
Attn: NPDES Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
EPA Form 3510.2A (Rev, 1-99). Replaces EPA forms 7550-6 & 7550-22, Page 10 of 23

0
D
C
ENGINEERING ALTERNATIVES
ANALYSIS (EAA)
Of
WASTEWATER TREATMENT PLANT
EXPANSION
Located in:
Town of Hertford, North Carolina
January 12, 2011
Prepared by:
Green Engineering, PLLC
Post Office Box 609
Wilson, North Carolina 27893
Green Engineering Project No.: 10-115
b
GRFFN FNGINFFRING

ENGINEERING ALTERNATIVES ANALYSIS (EAA)
WASTEWATER TREATMENT PLANT EXPANSION
TOWN OF HERTFORD
January 2011
I. GENERAL
This Engineering Alternatives Analysis is being prepared to support NPDES application to the
North Carolina Department of Environment and Natural Resources -Division of Water Quality for
the proposed increase in treatment capacity for the Town of Hertford's Wastewater Treatment
Plant (WWTP) from 0.700 MGD (700,000 GPD) to 0.975 MGD (975,000 GPD).
The purpose of this Engineering Alternatives Analysis is to provide an explanation and to compare
alternatives for the proposed capacity expansion of the WWTP. This capacity expansion will
enable the Town of Hertford to treat additional flow within the present WWTP in order to meet the
growing needs of the area. This includes accepting wastewater generated from the Town of
Winfall's wastewater collection system as well.
II. PROJECT DESCRIPTION
A. Existing Conditions
I
The Town of Hertford's wastewater treatment plant (WWTP) has a current permitted
discharge capacity of 700,000 GPD (Permit # NC0021849) for a direct discharge into the
Perquimans River together with a non -discharge Permit # WQ0021289 with a capacity of
273,680 GPD onto 78.11 acres of land.
W:\HERTF10115\Office\Pemits\10115-Hertford NPDES EAA.doc
1
b
GREEN ENGINEERING

E
0
Design capacities of the existing system components are as follows:
Headworks: 2,629 GPM 3.79 MGD
Aeration Basins 0.86 MGal 20.6 Hrs detention
Final Clarifiers (2)
Final Filters (2)
Effluent Pump Station
36 DIA/Ea
1,440 GPM (ADF)
1,840 GPM
344 Gal/Day/SF
2.0 MGD
2.71 MGD
The summary of the Daily Monitoring Reports (DMR) have been included in Appendix A
of this report. The DMR shows that for a five (5) month stretch from November 2009 thru
March 2010 the average daily discharge rate for the month exceeded the discharge
permitted capacity of the WWTP. There has also been a large I & I problem within the
Town of Hertford's wastewater collection system that has been ongoing since the first I & I
studies were performed in 1995. Since that time, approximately $1.6 million has been
spent on the investigation and repair of the Town's interceptor and collection system.
In 2009 another I & I study was performed and the average I & I for the system at that time
was determined to be 125,000 GPD, with a worst case of 420,000 GPD during a rainfall
event of 2.6 inches. This later study indicated that the Town of Winfall was a large
contributor to the I & I problem as well. However, the Town of Winfall has not yet
completed an I & I study; therefore, the severity and options for repair of that system are
not known at this time.
WAHERTF10115\Office\Pemits\10115-Hertford NPDES EAA.doc
40
GREEN ENGINEERING

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B. Population Trends and Flow -7
As stated in part A the Town of Hertford's WWTP has already had months where average
daily discharge flows have exceeded the permitted discharge capacity of the WWTP.
Therefore any increase in population within the Town of Hertford will only exacerbate the
problem.
The population of the Town of Hertford is anticipated to grow at a moderate pace over the
next twenty years. The major areas of growth are expected to be in the south and
southeastern sections of town.
The State of North Carolina Office of State Planning (State Data Center) has projected the
population increase in Perquimans County over the next twenty years. The following
shows the estimated population increase for Perquimans County and the Town of Hertford.
2010 2012 2015 2020 2025 2030
Perquimans County 13,110 13,372 13,633 14,412 15,058 15,702
Town of Hertford 2,160 2,203 2,268 2,380 2,487 2,599
The above table shows an estimated increase in the population of the Town of Hertford of
439 (20%) by the year 2030. The associated flows from the above population projections
have been calculated using the rates specified in the Engineering Alternatives Analysis
(EAA) Guidance Document. The results can be found in Appendix B of this report.
III. FEASIBLE ALTERNATIVES FOR PROJECT
Based on the EAA Guidance Document possible alternative solutions for the WWTP expansion
would be as follows:
WAHERTF\10115\0f Ce\PemitsU0115-HertfordNPDESEAA.doc e•O
y '
GREEN ENGINEERING -J

10
0
Alternative #1
Alternative #1 consists of expanding the WWTP discharge from 0.700 MGD to 0.975 MGD. In
order to do this the addition of a 3rd clarifier will be required. Estimate cost for this proposed
addition is approximately $525,000.
Alternative #2• Connection to an Existing Wastewater Treatment System:
In order for the Town of Hertford to connect to an adjacent wastewater treatment system additional
pumping capability would have to be constructed together with multiple miles of force main.
The two closest options for this alternative would be either Elizabeth City or the Town of Edenton.
Elizabeth City is approximately 15 miles to the northeast and Edenton is approximately 14.5 miles
to the southwest. Assuming that both Elizabeth City and/or Edenton have surplus capacity at their
WWTP the capital cost of either of these options would certainly exceed $5,000,000.
Alternative #3: Wastewater Reuse:
The Town of Hertford's WWTP treatment process produces water to reuse standards; however, at
this time there is not a true reuse application available.
III. ECONOMIC FEASIBILTIY OF ALTERNATIVES:
No doubt the capital cost of an additional clarifier together with the overall operation and
maintenance for that system would be substantially less than that required for a multiple pump
station / multi -mile force main system.
WAHERTF\10115\Office\PemitS\10115-Hertford NPDES EAA.doc
• '
r.RFFN FNf;INFFR1K1rZ

Appendix A
W:\BERTF\10115\Office\Pemits\101 NPDES EAA.doc

TOWN OF HERTFORD
EFFLUENT
NPDES PERMIT NO. IVC00218945
FACILITY NAME Town ofNertfi
OPERATOR IN RESPONSIBLE CHARGE
CERTIFIED LABORATORIES
CHECK BOX IF ORC HAS CHANGED
DISCHARGE NO. 001 YEARS
CLASS 2 COUNTY
GRADE 3 PHONE
(2)
WiMam N. Toon
Mail ORIGINAL and ONE COPY to:
ATTN: CENTRAL FILES I x
DIV. OF ENVIRONMENTAL MANAGEMENT (SIGNATURE OF OPERATOR IN RESPONSIBLE CHARGE)
DERNR By THIS SIGNATURE, I CERTIFY THAT THIS REPORT IS ACCURATE AND COMPLETE TO THE BEST OF MY KN(
P.O. BOX 29535
RALEIGH, NC 27626-0535
FLOW
z
-.40
OW
11
g z
-, R
' I
Oao
� a
'A
EFF X
INF
Ti
nL -
• w.ey
-
Jan-09
Feb-09
0.631
0.519
0.790
0.585
0.540
1 0.440
12.2
12 * '
A
11.4
15a6•
13.8
i 0.0
10.1
8.1
7.7
6.8
7.3
623
1855
1240
2200
36
1060
4.1
4.3
1 4.7
7.3
3.2
2.0
0.04
0.00
0.04
0.00
0.04
0.00
2.1
2.3
3.0
3 0
3.8
3
1.3
1.6
1.82
1
11 '
1
Mw-09
0.686
1.023
OA90
12.2
22
14.2
9.4
7.4
7.2
1265
2200
720
5.2
67
4.6
0.05
0.05
0.05
2.5
3.1
3 1
2.0
1
11
Apr-09
0.523
0.704
0.436
16 6
16.6
19.7
14.2
7.9
6.9
526
1470
2
2.0
2.1
10
0.11
0052
0.04
2.3
3 1
3.1
1.0
1
May-09
0.445
0.557
1 0.392
0
20.4
r24
22.4
18.2
7.9
7.2
<50
<0
<50
2.0
2.0
<2
0.09
0.17
0.04--
2.3
4.3
F43
1.0
Jun-09
0.416
0.639
1 0.336
23 . 6
23.6
24.7
21.5
7A
7.0
<20
<0
<20
3.0
5.6
2.1
0.11
0.18
0.04
2.5
4 -
4.8
8
1.1
Jul-09
0.447
0.835
1 0.338
46
24.6
26.1
23.0
7.5
7.0
<20
<20
<20
2.4
2.5
<2.0
0.14
0.25
.0.04
5.3
1 3 . I
13.1
1.0
Aug-09
0.591
1.225
1 0.410
26.1
26.1
26.9
24.8
7.5
6.9
<20
<20
<20
2.0
2.0
<2
0.17
0.34
<0.04
3.6
7.8
1.2
Sep-09
0.556
0.859
OA31
24.3
1 25.1
1 22.5
1 7.4
7.1
<20
<20
<20
<2
<2
<2
0.12
0.27
0.04
2.0
3A
0.8
2.06
40,
Oct-09
Feb 10
40
0.420
6.987.t2
--,0342�,'
OA91
-1:46511
k.A.072,A
7�13421
0.365
f-DOA14 -N
"
--'-0-63W5'.
0. -521-�
20.5
44.8��
1037
'7
-12.5��
1
1 25.0
8:
:'I O�,
-153 '
16.0
r4l
�'9.0
7.6
, � �'. 12
-7.1-�
1 6.8
1. -,?," 6. 3
'-;5 6.9
0
,.,�50
<5
<5
0
',<50n,
0
3.6
49,��
4
3.6
-�7.0i',;,
4.9
40.0t��
3.6
�-2'1 �
034
1 �0.08-
"-0.07,;
�-0.09��
OA7
1A.121
'�03167,
0.24
1-?*,04 Alk-216,i;-
0.08,--
:J-40.04 -411&6�4
- 1.4
2.2
iI46.0-
1.0
",U-j
,Maf
Apr-10
0.612
0.915
0.462
17.2
18.6
14.9
7.3
7.1
<50
<50
<50
<2.0
1 <.0
<2.0
0.06
0.09
<0.04
<2.5
<2.5
<23
May-1
0.506
r-
0.746
0.383
20.7
22.2
18.9
7.3
7.2
<50
<50
<50
2.0
2.1
<2
0.15
0.30
0.05
5.3
12.0
<2.5
Jun-10
OA07
0.497
0.317
24.8
27.1
23.0
7.4
7.2
<50
<50
-
<50
2.2
2.2
2.2
0.07
0.12
-1.31
0.04
3.5
5.0
<23
Jul-10
0.335
0.380
0.284
26.5
28.1
24.0
7.6
1 7.1
<50
<50
<50
3.5
6.0
2.0
0.18
0.05
<2.5
<2.5
<2.5
Aug-1
0.339
OA70
0.290
26.9
1 27.7
25.8
7.6
7.2
<50
<50
<50
3.0
4.5
2.0
0.10
0.36
0.04
<2.5
3.2
<2.5
SeD-10
0.421
2.738
0.283
24.7
1 26.2
23.9
7.4
7.0
1 <50
<50
<50
3.0
3.7
<2.0
0.08
0.14
<0.04
3.7
4.6
<23
Oct-10
Oct
0.580
1.205
0.400
22.0
1 24.7
20.0
7.5
7.2
1 <50
<50
<50-
2.4
2.4
<2.0
0.09
0.21
<0.04
4A
9.8
2.0
- 10
Dec-10
---
'AVG. -
MAX
�bf!N.
OA61 0.734 '0339
0.987 -2.73S 0151
0250 1 0.298 0.099
N
26.9 28al 25.8
9.9 11.9 7.0-
Ew
4. 7.2
'2 9
803.0 8.1
I
7.1 6-2
7
680.8 Ell
1855.0".
0.0
5.9" 9.6 3.8
15.0 40.0. &6
2.0 2.0 2.0
�c
.2.5� 3 .0
5.4' 12.' 7 2A
146
28.6' IF: -i7,
2.0 0.8
5 471
15
122.0. . - 600
140 1.1
.. . .
LIMIT
............
0.4
.............
45
45
101

Appendix B
W:\HERTF\10115\Office\Pemits\10115•Hertford NPDES EAA.doc

M
MW
W
TOWN OF HERTFORD
WASTEWATER TREATMENT PLANT
CAPACITY EXPANSION
Flow Projections
CURRENT POPULATION = 2,160
CURRENT FLOW = 0.458 MGD (AVERAGE DAILY RATE WITHIN 1/09-9/10)
CURRENT FLOW = 0.987 MGD (MAXIMUM AVERAGE DAILY RATE WITHIN 1/09-9/10)
CURRENT
FLOW = 2.738 MGD (MAXIMUM
DAILY RATE 1/09-9/10)
Year
Population
Projected
Future
Residental
Future
Commercial
Total
Projected
Flow (GPD)
Total
Cumulative
Projected
Flow (GPD)
Total
Cumulative
Proiected
Flow
(GPMonth)
Total Flow
(Existing AVG+Projected)
Growth
Flow (GPD)
Flow_(GPD)
(GPMonth)
2012
2203
43
3,010
645
3,655
3,655
109,650
567,650
2015
2268
65
4,550
975
5,525
9,180
275,400
843,050
2020
2380
112
7,840
1,680
9,520
18,700
561,000
1,404,050 "
2025
2487
107
7,490
1,605
9,095
27,795
833,850
2,237,900
2030
2599
112
7,840
1,680
9,520
37,315
1,119,450
3,357,350
Population projections based on curent population and the growth rate of Perquimans County from
The State of North Carolina Office of State Planning (State Data Center)

•
GREEN ENGINEERING
WATER WASTEWATER. SURVEY XX PLAI NJ4 PROJECT MANAGEMENT
T
303 GOLDGBORO BT. EAST PA. BOX 60D MI -MR KC. 27M
TEL (2W 237-366 FAX (2W 243-74M OFFICE CCEE33494MCOM
EXISTING
WASTEWATER G
TREATMENT '
PLANT -
■ � i 1(
r r
yi
40
OUTFACE FOR
0.975 MOD FLOW
EXISTING
• � �-- �y )• Ppttat
SPRAY FIELDS ; efv
a� Poal t;
1
Craw
1 Point
•;' 1 ti
� 1 �
r
l
ti 7" r
— —Y L10 • I i-M
11 �
1 •.
1 a.
j
1
0.7 MGD FLOW:
LATITUDE: 36'1t'51"
TOWN OF HERTFORD
LONGITUDE: 76.28f7"
SUBBASIN:
30152
NORTH CAROUNA
RECEIVING STREAM:
STREAM CLASS:
PERQUIMANS RIVER
SC
SOURCE: USGS "HERTFORD' QUADRANGLE, DATED 1982
`
TOWN OF HERTFORD WWTP NCO021849