NC0032719_Permit Issuance_20080709

NPDES DOCUMENT SCANNING COVER SHEET
NC0032719
Valhalla WTP
NPDES Permit:
Document Type:
Permit Issuance ,
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Technical Correction
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
July 9, 2008
This document is printed on reuse paper - ignore any
content on the reYez-,se side

Mr. Luther C. Copeland, County Manager
Chowan County Water Department
P.O. Box 1030
Edenton, North Carolina 27932
Michael F. Easley, Govemor
State of North Carolina
William G. Ross, Jr., Secretary
Department of Environment and Natural Resources
Coleen H. Sullins, Director
Division of Water Quality
July 9, 2008
Subject: Issuance of NPDES Permit
Permit No. NC0032719
Valhalla WTP
Chowan County
Dear Mr. Copeland:
Division personnel have reviewed and approved your application for the subject permit. Accordingly, we are
forwarding the attached NPDES discharge permit. This permit is issued pursuant to the requirements of North
Carolina General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the U.S.
Environmental Protection Agency dated October 15, 2007 (or as subsequently amended).
The issued permit has the following changes from the September, 26, 2007 draft permit:
> The Division verified that an unnamed tributary to Pollock Swamp is the correct receiving stream and made
the appropriate corrections to the affect text, coordinates. and water classification.
> The chloride compliance limit was changed to a Daily Maximum.
➢ The chloride measurement frequency was changed to 2/Month.
➢ The flow compliance limit was changed to 0.060 MGD Monthly Average Maximum.
> Narrative corrections were made, footnotes and A(2), to clarify the permit requirements.
It is strongly recommended that a plan be initiated to address the toxicity test failures. Future renewed permits may
include toxicity compliance limit if toxicity test failures are persistent.
If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable to you, you
have the right to an adjudicatory hearing upon written request within thirty (30) days following receipt of this letter.
This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina General
Statutes, and filed with the Office of Administrative Hearings (6714 Mail Service Center, Raleigh, North Carolina
27699-6714). Unless such demand is made, this decision shall be final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division may require
modification or revocation and reissuance of the permit. This permit does not affect the legal requirements to obtain
other permits which may be required by the Division of Water Quality or permits required by the Division of Land
Resources, the Coastal Area Management Act or any other Federal or Local governmental permit that may be
required.
If you have any questions concerning this permit, please contact Ron Berry at telephone number [phone],
extension 531.
Sincerely,
Coleen H. Sullins
Cc: NPDES Files
Central Files
Washington Regional Office — Surface Water Protection
Aquatic Toxicology Unit
Division of Water Quality, Point Source Branch Telephone [phone]
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 FAX [phone]
512 N. Salisbury Street, Raleigh, North Carolina 27604 On the Internet at http://hlo.enrstate.nc.us/
An Equal Opportunity/Affirmative Action Employer
No ` Carolina
!atura!!y

NC0032719 •
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,
Chowan County Water Department •
is hereby authorized to discharge wastewater from a facility located at
Valhalla Water Plant
Intersection of NC Highway 32 & NCSR 1222
Edenton
Chowan County
to receiving waters designated as unnamed tributary to Pollock Swamp in the Chowan 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, 2008.
This permit and authorization to discharge shall expire at midnight on November 30, 2012.
Signed this day July 9, 2008.
Az3,
: Coleen H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission

l
NC0032719
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 Ionger effective. Therefore, the exclusive authority to
operate and discharge from this facility arises under the permit conditions, requirements, terms, and provisions included
herein.
Chowan County Water Department is hereby authorized to:
1. Continue to discharge filter backwash and softener recharge wastewater treated by
means of:
• Three filters
• Two water softeners
• Solids settling pond
The facility is located at the Valhalla Water Plant, intersection of NC Highway 32 &
NCSR 1222, Edenton, Chowan County.
2. Discharge from said treatment works at the location specified on the attached map into
an unnamed tributary to Pollock Swamp, classified C-NSW in the Chowan River Basin.

Valhalla Water Treatment Plant — NC0032719
USGS Quad Name: C32NW Valhalla, NC
Receiving Stream: UT to Pollock Swamp
Stream Class: C NSW
Subbasin: Chowan - 030104
Lat..: 36° 08' 34" N
Long.: 76° 39' 17" W
Not to SCALE

NC0032719
A (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of the permit and lasting until expiration, the Permittee is
authorized to discharge from outfall(s) serial number 001. Such discharges shall be limited and monitored by the
Permittee as specified below:
EFFLUENT
CHARACTERISTICS.
• LIMITS
MONITORING REQUIREMENTS
,,.
Monthly
Average
Weekly:_
Average
Daily '
Maximum
Measurement
Frequency
Sample
Type
Sample
Location
Flow
0.060 MGD
Monthly
Instantaneous2
E
Temperature
Monthly
Grab
E, U, D
Salinity
Monthly
Grab
E, U, D
Conductivity
Monthly
Grab
E, U, D
pH
Between 6.0 and 9.0 s.u.
Monthly
Grab
E, U, D
Dissolved Oxygen
Monthly
Grab
E, U, D
Total Dissolved Solids
Monthly
Grab
E, U, D
Total Suspended Solids
30.0 mg/L
45.0 mg/L
2/Month
Grab
E
Total Residual Chlorin&
•
17.0 µg/L
2/Month
Grab
E
Total Copper
Monthly
Grab
E
Total Chloride
230 mg/L
2/Month
Grab
E
Total Iron
Monthly
Grab
E
Total Manganese
Monthly
Grab
E
Ammonia Nitrogen
Monthly
Grab
E
Total Nitrogen (TN)
Monthly
Grab
E
Total Phosphorus (TP)
Monthly
Grab
E
Whole Effluent Toxicity4
Quarterly
Grab
E
Notes:
1. Sampling locations: E = Effluent, U = at least 50 feet upstream of the discharge location, D = at least 100 feet downstream
of the discharge location.
2. For instantaneous flow monitoring, the duration of the discharge must be reported in addition to the total flow.
3. Limit takes effect November 1, 2008. Limit and monitoring requirement only apply if chlorine is used for disinfection.
The facility shall report all effluent TRC values reported by a NC certified laboratory including field certified.
However, effluent values below 50 µg/L will be treated as zero for compliance purposes.
4. Chronic Toxicity (Ceriodaphnia) monitor only at 90.0%; February, May, August, November; See Special Condition A (2)
of the Supplement to Effluent Limitations.
All samples collected should be of a representative discharge.
There shall be no discharge of floating solids or foam visible in other than trace amounts.

NC0032719
A(2). CHRONIC TOXICITY MONITORING (QRTRLY)
The permittee shall conduct quarterly chronic toxicity tests using test procedures outlined in the "North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised February 1998, or subsequent
versions.
The effluent concentration defined as treatment two in the procedure document is 90%. The testing shall be
performed as a Ceriodaphnia dubia 7 day pass/fail test. The tests will be performed during the months of
February, May, August, and November. Effluent sampling for this testing shall be performed at the
NPDES permitted final effluent discharge below all treatment processes.
All toxicity testing results required as part of this permit condition will be entered on the Effluent Discharge
Monitoring Form (MR-1) for the month in which it was performed, using the parameter code TGP3B.
Additionally, DWQ Form AT-1 (original) is to be sent to the following address:
Attention: NC DENR / DWQ / Environmental Sciences Section
1621 Mail Service Center
Raleigh, N.C. 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section no later than
30 days after the end of the reporting period for which the report is made.
Test data shall be complete and accurate and include all supporting chemical/physical measurements
performed in association with the toxicity tests, as well as all dose/response data. Total residual chlorine of
the effluent toxicity sample must be measured and reported if chlorine or a chlorine derivative is employed
for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity monitoring is
required, the permittee will complete the information located at the top of the aquatic toxicity (AT) test form
indicating the facility name, permit number, pipe number, county, and the month/year of the report with the
notation of "No Flow" in the comment area of the form. The report shall be submitted to the Environmental
Sciences Section at the address cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required, then monthly
monitoring will begin immediately. Upon submission of a valid test, this monthly test requirement will
revert to quarterly in the months specified above.
Should any test data from this monitoring requirement or tests performed by the North Carolina Division of
Water Quality indicate potential impacts to the receiving stream, this permit may be re -opened and modified
to include alternate monitoring requirements or limits.
If the Permittee monitors any pollutant more frequently then required by this permit, the results of such
monitoring shall be included in the calculation & reporting of the data submitted on the DMR & all AT
Forms submitted.
NOTE: Failure to achieve test conditions as specified in the cited document, such as minimum control
organism survival, minimum control organism reproduction, and appropriate environmental controls, shall
constitute an invalid test and will require immediate follow-up testing to be completed no later than the last
day of the month following the month of the initial monitoring.

REVISED 6/17,20,24/08 & 7/7/08 RDB
NCDENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
Valhalla Water Treatment Plant - NC0032719
Facility Information
(1.) Facility Name:
Valhalla WTP
(2.) Permitted Flow (MGD):
0.06 MGD
(6.) County:
_ ___
Chowan
(3.) Facility Class:
I
(7.) Regional Office:
Washington
(4.) Pretreatment Program:
N/A
Renewal
(8.) USGS Topo Quad:
, C32NW
(5.) Permit Status:
(9.) USGS Quad Name: Valhalla
Stream Characteristics
"'
(1.) Receiving Stream:
UT to Pollock Swamp
(7.) Drainage Area (mil j
(2.) Sub -basin:
03-01-04
(8.) Summer 7Q10 (cfs): 1 0
(3.) Stream Index Number:
25-22
(9.) Winter 7Q10 (cfs):
(4.) Stream Classification:
C-NSW
(10.) 30Q2 (cfs):
(5.) 303(d) Status:
Not listed
(11.) Average Flow (cfs):
(6.) 305(b) Status:
(12.) IWC %: ; 100
Summary
Chowan County operates the Valhala WTP. The water treatment process consists of groundwater
wells, aeration, detention, filtration, and ion exchange softener. The backwash from the softeners
is treated on a settling pond and discharged to an unnamed tributary to Pollock Swamp. The
active permit was issued on September 2006 with an expiration date of November 30, 2007.
Compliance Summary
DMR data was reviewed for the period of September 2006 to July 2007.
Flow
MGD
TRC
pg/L
Conductivity
Umhos/cm
Salinity
ppt
TSS
mgll
Total
Nitrogen
mgll
Total
Phosphorus
mg,l
Manganese
ug/I
Average
0.053
396
2532
3.7
4,5
0.56
0.22
102
Reasonable Potential Analysis
Parameter
Chronic
standard
(pg/L)
Acute
standard
(pg/L)
Maximum
reported value
(pg/L)
RP?
Comments
Zinc
50
67
< 10
No
Eliminate monitoring
Copper
7
7
21
Yes
Action level standard, no changes
Lead
25
34
< 5
No
Eliminate monitoring
Chloride
230 mg/I
1400 mg/I
Yes
Limit
Whole Effluent Toxicity - The permit requires chronic test (ceriodaphnia) at 90 % effluent
concentration. The facility has failed four consecutive quarterly tests.

NPDES Permit Fact Sheet
Page 2
Valhalla WTP
NC0032719
Proposed Modifications
• Total residual chlorine limit - the permit has the incorrect units for the TRC limit. The limit
was corrected to 17 µg/I instead of 17 mg/1.
• Total Zinc - Monitoring was eliminated from the permit, all reported values were less than
10 µg/ 1.
• Total lead - Monitoring for total lead was eliminated, all reported values were less than 5
µg/l.
• Chloride - A limit of 230 mg/I was implemented based on reasonable potential to exceed the
water quality standard.
• As per the Division's water treatment guidance a flow limit was implemented in the permit.
The renewal application indicated the facility is designed for a backwash reject flow of 0.05 MGD.
Final Modifications
After review of DMR data it was determined that the permittee would have been
out of compliance with the 0.05 MGD monthly average limit 11 out of the last 12
months. Because of other concerns the region has requested that the monthly
average permitted flow be set no higher than 0.060 MGD. With 0.0600 MGD as
the new limit the permittee would have been out of compliance 3 times in the
last 24 months The renewed permit will set 0.060 MGD as the permitted flow
limit.
6/20/08: Moved chloride limit to Daily Max.
78/7/08: Narrative correction to footnotes.
Proposed Schedule for Permit Issuance
Draft Permit to Public Notice:
Permit Scheduled to Issue:
October 3, 2007
July 9, 2008
State Contact Information
If you have any questions on any of the above information or on the attached permit, please
contact Teresa Rodriguez at [phone], extension 553.
* New contact person to issue final permit: Ron Berry [phone] x. 531
Regional Office Comments:
6/17/08: Corrected receiving stream description, water class, and Lat/Long coordinates.
Corrected electronic map. Keep WET monitoring only.
6/20/08: Added language to cover letter for future potential to have WET Limit.
6/ 24/ 08: Final decision on WET Limit or Monitor Only. Will require monitoring only. Issue final
permit.
7/7/08: Agreed to e e ;'tted flow limit to 0.060 MGD. Note to file.
NAME:
DATE: 1?/�
SUPERVISOR: DATE:

DMR Data NC0032719
Valhalla WTP
Date: 6/27/08
pb: rdb
• Rdg • Monthly Avg
0.120
0.100
♦400411,
U 4IIINII♦N wMwN
LIM=
- ►
0.080----
G
0
-0.060
O
0.040
♦ --
■
■
■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■
■.
0.020
0.000
Jan-
06
Mar- May- Jun- Aug- Oct-06 Dec- Feb- Apr-07 Jun- Aug- Oct-07 Dec- Feb- Apr-08
06 06 06 06 06 07 07 07 07 08
♦50060 - Chlorine, Total Residual i
0.60—
0.50—
0.40
ti
£ 0.30
H
0.20
0.10—
♦ ♦♦: ♦ ♦. ♦ • ♦♦
•
— • ♦ ♦♦ ♦ • ♦♦ ♦ ♦ •♦
♦ ♦♦
Incorrect compliance limit applied,
♦♦
no action against permittee
o.00
Dec-
06
,
Jan- Feb- Mar- Apr- May- Jul-07 Aug- Sep- Oct- Nov- Dec- Jan- Mar- Apr-
07 07 07 07 07 07 07 07 07 07 08 08 08
• 00940 - Chloride (as CI)
2000
1800 —
1600 —
1400
11 1200
a1000—
3i
i 800
V 600
400
200
• -
-
— ♦-
-
—•
♦
—
♦ • • -
•
•
—
♦ ♦
♦ ♦ ♦
0
Dec-
06
, ,
Jan- Feb- Mar- Apr- May- Jun- Jul- Aug- Sep- Oct- Nov- Dec- Jan- Feb- Mar- Apr-
07 07 07 07 07 07 07 07 07 07 07• 07 08 08 08 08

Re: Update on Valhalla WTP Permit renewal
Subject: Re: Update on Valhalla WTP Permit renewal
From: Ron Berry <[e-mail]>
Date: Mon, 07 Jul 2008 12:10:37 -0400
To: Al Hodge <[e-mail]>
CC: Kristin Jarman <[e-mail]>
Al,
As we discussed during the current renewal cycle WTPs are being assigned a permitted
flow. In several cases we have alerted the permittee and region that the application
data and actual DMR data indicates the potential to routinely exceed the implicated
MGD flow. Accordingly, we have made adjustments.
In the case of Valhalla we do want to grant a capacity increase wee it is not
applicable so we will assign as agreed a monthly average of 0.060 MGD as the
compliance permitted flow.
FYI...Based on the last 24 months (April 06 - 08) Valhalla WTP would have exceeded
the monthly 0.060 MGD 3 months out of the 24, the last exceedance in April 2007. In
the application they stated 0.050 MGD as the monthly flow. In the 1998 Fact Sheet it
states 0.055 MGD as the monthly design discharge flow.
If you have any questions let me know. Hopefully the final permit will go out this
week.
Puri" -
Al Hodge wrote:
Ron Berry wrote:
Al & Kristin,
We just discovered the permitted discharge flow stated, 0.050 MGD, in the
permit renewal is too low. The DMR data shows a daily flow range of 0.012 MGD
to 0.095 MGD, averaging 0.060 MGD. Based on review of the DMR data we would
recommend the permitted flow be set at 0.090 MGD.
I have not issued the final yet. Let me know if this is okay with you.
Ron
ron, kristin:
it looks like to me they expanded the use of this plant without a permit
modification.* i do not support an expansion of the discharge at this location.
*they have ask for a renewal not an expansion. there are records in our files that
at one time they did have a discharge limit of 60,000 gpd we may have changed it,
i don't know?
the region should have been sending nov's for the permit violation. the
regional supervisor(whoever he is) told the staff to concentrate on npdes systems
with an 02 uptake parameter.
now! how do we handle this? lets talk
hodge
1 of 1 7/7/2008 12:11 PM

Va1ha11a.WTP Permit Update
Subject: Valhalla WTP Permit Update
From: Ron Berry <[e-mail]>
Date: Fri, 20 Jun 2008 11:09:23 -0400
To: Al Hodge <[e-mail]>, Kristin Jarman <[e-mail]>
Al & Kristin,
After discussing the Chronic Toxicity Limit change with the senior permit writers and
reviewing the current WTP guidance it was pointed out to me that we should not be
imposing a Chronic Toxicity Limit. We can include language in the cover letter
stating the continued failure of the toxicity test would most likely result in a
toxicity compliance limit in the next permit renewal. Please advise if want this
language included.
Kristin and I discussed this as well as the original information I had provided on
any WTPs with toxicity limits. I went back and conducted a second review of the WTPs
that had assigned toxicity actions in their permits, my findings were as follows:
1) There are currently 57 WTPs in the state with some form of toxicity actions in
their permit.
2) Out of the 57 WTPs, 52 have toxicity monitoring only, 5 have toxicity limits.
3) However, the 5 WTPs that received toxicity limits should have received monitoring
only. There has been no issues with the 5 permits with limits because either they
have no discharges (no DMR report) todate or they have been able to pass toxicity.
Out of the 5 with limits, 2 are in your region ( NC0088480,NC0088455, no discharges
reported).
Sorry about the confusion.
On another matter the chloride limit monitoring frequency should be 2/Month not
monthly. Also, the chloride limit should be a Daily Max.
As requested by Kristin I will forward an electronic copy of the final permit and
cover letter.
If you any questions let me know.
Ron
1 of 1 6/20/2008 2:00 PM

Re: Folllow Up to Phone Conservation Valhalla WTP
Subject: Re: Folllow Up to Phone Conservation Valhalla WTP
From: Ron Berry <[e-mail]>
Date: Wed, 16 Apr 2008 11:44:45 -0400
To: Kristin Jarman <[e-mail]>
Kristin,
Based on Teresa notes the following changes were going to be incorporated into the
renewed permit:
1) TRC limit units would be corrected to 17 µg/L.
2) Total Zinc and Total Lead monitoring requirements would be removed since DMR data
evaluation indicate these metals concentration are not significant.
3) Chloride limit of 230 mg/L maximum would be imposed since DMR data evaluation
indicated this compound concentration could exceed the water quality standard.
4) A permitted flow, 0.050 MGD monthly average, would be established as limit per DWQ
policy.
This is currently in a freshwater class. It is a zero flow situation which is why the
TRC limit is set at 17 µg/L. Other rational for setting limits or monitoring or
special conditions depends on the basin plan, other agencies recommendations, etc. I
am not aware of any at this time other than what you and Al have mentioned, cleaning
of the lagoon/pit.
$
Ron
Kristin Jarman wrote:
Ron,
Al wants to know if there is any criteria during the existing plant renewals that
would require limits vs monitoring. For example if the discharge goes to SA
waters, zero flow streams or a primary nursery.
Thanks,
Kristin
Ron Berry wrote:
Kristin,
One of the permit, West Carteret WTP NC0077143, discharges into a SA class
water (White Oak Basin)but has passed all its tests. The other 2 WTPs have no
WET test violations.
Ron
Kristin Jarman wrote:
Ron,
Do you know if the 3 with the limits are failing and if so are they being
fined or just monitoring every month? Are they discharging brine into fresh
water?
Thanks,
Kristin
Ron Berry wrote:
Kristin,
I completed a review of the permitted WTP with toxicity testing
requirements as of mid 2007. Of the 36 WTP with toxicity testing
requirements, 3 had limits. As we have continued to cycle through WTP
renewals, except for greensand filter type processes, the toxicity test
has been added with a monitoring only requirement.
Ron
Kristin Jarman wrote:
1 of 2 4/16/2008 11:45 AM

Re: Folllow Up to Phone Conservation Valhalla WTP
Ron,
Al wanted me to check with you and see if any WTP's have a Toxicity
Limit.
Thanks,
Kristin
Ron Berry wrote:
Al & Kristin,
I talked with Gil and there is no problem with adding a limit to
the WET test. I have attached the Chronic WET Test Limit page for
your review. Please note it basically requires the permittee to do
more testing. There is a statement in this text that allows further
changes based on the WET data submitted. Let me know if you want
this text in place of the current WET monitoring text.
Ron
a
2 of 2 4/16/2008 11:45 AM

Valhalla .WTP NC0032719
Subject: Valhalla WTP NC0032719
From: Ed Warren -Jr <[e-mail]>
Date: Tue, 27 Nov 2007 13:30:06 -0500
To: Teresa Rodriguez <[e-mail]>
Receiving stream should be unnamed trib. to Pollock's Swamp. Permit is OK otherwise.
1 of 1 11/27/2007 2:51 PM

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The Daily Advance
215 S. Water Street
Elizabeth City, NC 27909
North Carolina
Pasquotank County
Affidavit of Publication
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,
was published In the Daily Advance on the following dates:
Public Notice
October 3rd, 2007
?ton . Sysfern (NPDES) 'Assoala 14rn�'P Ode
; charge rmit•to the N C-~"27976) fia r 9 e Y m a y
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advertisement was published was, at the time of each and every such days. from ,the pub. k the Pas ubtank
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publication, a newspaper meeting all of the requirements and qualifications of ! fish r dateei; of -this; Scut ,MIl s Wa ,River L,asln.
I10jtCe.� j C 1 r
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newspaperwithin the meaningof Section 1-597 of the General Statues of Written comments Qme ��C �Fl�°nth City
regarding' (the.` rot ° - t Edit , e� a ,b1541d; Dfor
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�___,�, .� uld: `:,'�A '' '• egret alot:tfs-perntt
�, li . M 1 'asquotank
Box'i,10 oji .Cgu ., vfR ,. fihls1
ap Nled27 932).'' tacll , o+ arae1 fil :
of+�< <
ofs;NPDES� Uri cin5e'�' fi3ufa �,:
'tipor7
Sworn to and subscribed before me, this 12th day of November, 2007
My commission expires November 22nd, 2011
PUBUC NOTICE T h 8• C�a m die n.:
NORTH CAROLINA c u eta' o•n rdl' of
(174
ENVIRONMENTAL North .343 Camden,. •
U MANAGEMENT • NC 27.921 7549) has
COMMISSION,{ ' • applied .for renewal-
'q`NPDES UNIT, to • NPDES permit,
1617,,: MAiL SERVICE ; N C 0 0 3.7 21, 4 ..f, or
CENTERI Grandy • Pririnnry,
"=1'. RALEIGH, NC, :'• School �,..WWTP_, in.;
; 27699L161,7� Camden• - Coun The; NC De
T�t�fs,pe itte facll 4 parimer
NOTIFICATION OF ;::dfschorge�J 7,00 of Trgns - otter
INTENT O •ISSUE A 4116ris •per.i.day Or,8 5 O:s?tyi; y
arc
oac112. an €+.Ncrr
!ODES": WASTEWATER •` ecrted�wastewater--� • r��11�. ��27953
` s 41- F PERMIT -,, : ,' .. to :. receiving'.' aters . b " fled f r) ha
£ t;z.: � f f i.. dosrgnatedassaw.;= : pp or enewd
<: Y1 µ e reek • ln�'the^, of l NPDES' pperm!
' -On the basis of r Pas. Gdtapk River- N00056065.. fire tht
ou h�r-staff rev_lew Bali .' Currently BOD, J M q r! n e � M.al nt'e
on� applicattdsof ,;;tote ended ;sol .. Hance- fac111ty '-.lr
NC General St a ids' : e+�af .�cofform3.�� Dare .Count�!, , ThI
.:143.21; ,. Public; ::la and o b[.. reslduaI perrnl ted facllUY dfs
92.50pp, r and othe ►chid ra�r are water' charges; chlorinates
Iawfuf: standards iTaltf. invited:- Tht a �ffer:back�irash anc
and*re ❑lattopL .the d is c1 a r g e,.'_ may. stotrnwdter'., to the
North Carolina;; Envl t' affect future • aioca-... Spencer Creek '.ir
rgnmentai '.Mans er_ tibns in this portion of the P a sq uota n i
• merit' Commiss�on "the,.• : Pasquotank River Basin. Currently
proposes ,to issue ' a ,River Basin. totc�L suspended so1.
Nei 1t onal . Poilu .an ; a . ��= ; ':2d�� oII 'and rea
Dischar e::Elirt ncr I'me Sp :Mats, ate and nirel-l;'; esldUa
r- I chlorine area ot�ei
wgstewater .:'dis quatify'; HmItetl` °-
L`61ox�279r::South;.�igs���� rsc .n .>,
arson •s) Iisted=affect e` alloca-
%•the draft enev�r rryy
�.. r , ermlt.F:NC003271Q;i toNB i-Beg M.Creek
rlt`ii"'f"d'ofiher or the'. Valhdlia ` in' the Pa uoftrnk:
support ng, informs gter::. Treatrnent River Basin. urre by
•fro ;oil fire used: ,to lane in . Chowan total suspended`so1
de ermine EoridI- County ;This rmlf• ids,. .• total,: residual
tie ted facilltdts= 'chloltna"`id e-r
draft ,p 11q are ,charges.. treated : a151e' olldsare ater
�avajjabl upon?wa'stewater to gUialltytimited.: �a ':
ment'of e: cosiwof. y;
`tC Wtotesfrrequesand • payl�ky1-tock�Creek
• reproduce�� • Ma..8� t6CGrtdlycomments: and/or: residuarotftripe . -•: , .;r ' �44'l0/3y
and
• requesfs'for.fnform total chloride are
°tid ,to `the,; NC.%D , water gualtftljmlted. -
slo of-Watet Quatit ;This ischc rgggg• may
dal4j't.ha •�,;above'ciftect,
f ss or.: call D[na�,'ajjocatlons :; n this
3pr _n p o r t I o o f t hi s
a bier 36 :-Chgwari River Basin.%
dry fhe'-Po nT urce;;
Brunch ;i?ie�ase .
,include the-,: NPDES .
rmit=. num
achedyin any,com-
munlcatiori . inter
ested� rso m
,i, a,1tieD• o m
tWcity:;'5 *.N r`Sa i
Ralefg
2
e448-
xt m'r ���x.L;
' tee fo?ma-
f 11on ontile:'.

NCDENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
5 v'ffrr'll
Valhalla Water Treatment Plant - NC0032719 e,14\ay-
Facility Information
(1.) Facility Name:
Valhalla WTP
(6.) County: I
(7.) Regional Officer j
(8.) USGS Topo Quad:
Chowan
Washington
(2.) Permitted Flow (MGD):
0.05 MGD
(3.) Facility Class:
(4.) Pretreatment Program:
I
N/A '
C32NW
(5.) Permit Status:
Renewal
(9.) USGS Quad Name: Valhalla
Stream Characteristics --1.
(1.) Receiving Stream_
(2.) Sub -basin:
UT to Rockyhock Creek
(7.) Drainage Area (mi-):
0
03-01-
(8.) Summer 7Q10 (cfs):
(3.) Stream Index Number.
25-22
(9.) Winter 7Q10 (cfs):
(4.) Stream Classification:
(5.) 303(d) Status:
B NSW
(10.) 30Q2 (cfs):
of listed
(11.) Average Flow (cfs):
(6.) 305(b) Status:
1
(12.) IWC %:
100
Summary
Chowan County operates the Valhala WTP. The water treatment process consists of groundwater
wells, aeration, detention, filtration, and ion exchange softener. The backwash from the softeners
is treated by a settling pond and discharged to an unnamed tributary to Rockyhock Creek. The
active permit was issued on September 2006 with an expiration date of November 30, 2007.
Compliance Summary
I pp
c
DMR data was reviewed for the period of September 2006 to July 2007.
Flow
MGD
TRC
pg/L
Conductivity
Umhos/cm
Salinity
ppt
TSS
mgll
Total
Nitrogen
Total
Phosphorusgn
Manganese
ug/l
Average
0.053
396
2532
3.7
4.5
0.56
0.22
102
Reasonable Potential Analysis
Parameter
Chronic
standard
(pg/L)
Acute
standard
(/pglL)
Maximum
reported value
(pg/L)
RP?
Comments
Zinc
50
67
<10
No
Eliminate monitoring
Copper
7
7.3
21
Yes
Action level standard, no changes
Lead
25
33.8
< 5
No
Eliminate monitoring
Chloride
230 mg/I
1400 mg/I
Yes
Limit
Whole Effluent Toxicity - The permit requires chronic test (ceriodaphnia) at 90 % effluent
concentration. The facility has failed four consecutive quarterly tests.

NPDES Permit Fact Sheet Valhalla WTP
Page 2 NC0032719
Proposed Modifications
• Total residual chlorine — the permit had the incorrect units for the TRC limit. The limit was
corrected to 17 µg/1 instead of 17 mg/1.
• Total Zinc — Monitoring was eliminated from the permit, all reported values were less than
10 µg/1.
• Total lead — Monitoring was eliminated from the permit, all reported values were less than 5
µg/1.
• Chloride — A limit of 230 mg/1 was implemented based on reasonable potential to exceed the
water quality standard.
• As per the Division's water treatment plant guidance a flow limit was implemented in the
permit. The renewal application indicated the facility is designed for a backwash reject flow
of 0.05 MGD.
Proposed Schedule for Permit Issuance
Draft Permit to Public Notice: September 26, 2007
Permit Scheduled to Issue:
State Contact Information
November 19, 2007
If you have any questions on any of the above information or on the attached permit, please
contact Teresa Rodriguez at [phone], extension 553.
NAME: DATE: q//o 7
Regional Office Comments:
NAME: DATE:
SUPERVISOR: DATE:

Legend
O Municipality
County Boundary
Subbasin Boundary
Primary Roads
Monitoring Stations
Q Ambient Monitoring Station
Benthic Community
Recreation Locations
NPDES Dischargers
® Major
A Minor
Non -Dischargers
O Major
A Minor
Aquatic Life Rating
Impaired
No Data
Not Rated
P—ss..." Supporting
Figure 6 Chowan River Subbasin 03-01-04
cn
f
I
CHOWAN
0
94 �3m \\I
R` a-73
� Ed� on
DB15 .DB W C r-- =
f Benton ,4,,
Bay
BERTIE_--\
--" ,x0ct />O
1 r)
\ 0^
\ V'Cl( W/anut S
Planning Section
0 1.25 2.5 5 7.5 10 Basinwide Planning Section
Miles February 23, 2007

4.4.2 Pollock Swamp [AU# 26-1-1-1] and Rockyhock Creek [AU# 25-22]
Pollock Swamp drains to Edenton Bay and Rockyhock Creek is a tributary to the Chowan River.
These waters were not monitored and are therefore not given use support ratings. Water quality
conditions are of concern here because Valhalla WTP (NC0032719) is discharging to an
unnamed tributary to the Pollock Swamp when they are permitted to discharge to Rockyhock
Creek. The facility is currently out of compliance with toxicity issues; the lagoon is leaking to
old borrow pits on the south side and may be contaminating surface waters. The plant holds a
temporary permit for the new discharge site, while the renewal permit is being processed for
discharge into the unnamed tributary of Pollock Swamp. The new permit will require toxicity
monitoring. DWQ recommends the lagoon be repaired and excess solids be cleaned out.
Pollock Swamp drains into Pembroke Creek (AU# 26-1-1) along the western edge of Edenton
and Queen Ann's Creek (AU # 26-1-2) flows along the eastern side of Edenton. Resource
agencies have identified these creeks as priority in need of riparian buffers, stormwater wetlands
and critical area plantings to improve water quality.
52 Chapter 4 — Chowan River Subbasin 03-01-04

CHOWAN COUNTY WATER DEPARTMENT
POST OFFICE BOX 1030
EDENTON, NORTH CAROLINA 27932
May 29, 2007
NCDENR
Division of Water Quality
Point Source Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
ATT: Mrs. Carolyn Bryant
Re: County of Chowan
Valhalla WTP
NPDES Permit Renewal Package
Gentlemen:
JUG!
.ty
We are herewith requesting renewal of NPDES permit # NC0032719. There have been
no changes at the facility since the last permit was issued.
Sincerely,
Luther C. Copeland
County Manager

4
,4
NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
Mail the complete application to:
N. C. Department of Environment and Natural Resources
Division of Water Quality / NPDES Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
NPDES Permit Number
NC003Z7/6/
If you are completing this form in computer use the TAB key or the up - down arrows to move from one
field to the next. To check the boxes, click your mouse on top of the box Otherwise, please print or type.
1. Contact Information:
Owner Name
Facility Name
Mailing Address
City
State / Zip Code
Telephone Number
Fax Number
e-mail Address
c ef„ 6,1 3
.cle,v1(1.1m e
Z7gYz.
(Z5-) ygz- 777
(zsz) 8Z-3ZS
2. Location of facility producing discharge:
Check here if same as above ❑
Street Address or State Road
City
State / Zip Code
County
/60 J S lj'lfr, icy
,'/C_ -Z 7? 3 �......_
CA (�• t-3-s
3. Operator Information:
Name of the firm, consultant or other entity that operates the facility. (Note that this is not referring to the
Operator in Responsible Charge or ORC)
Name
Mailing Address
City
State / Zip Code
Telephone Number
Fax Number
4. Ownership Status:
Federal ❑
Oil 6 LA,. ct-p.‘
/2,) f c yc%
(Z51-) .7/L77
(zs-z.) Z -3 z.-gc
State ❑
Private ❑ Public
Paee 1 of 2 C-WTP 03/05

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
5. Type of treatment plant:
❑ Conventional (Includes coagulation, flocculation, and sedimentation, usually followed by
filtration and disinfection)
Ion Exchange (Sodium Cycle Cationic ion exchange)
❑ Green Sand Filter (No sodium recharge)
❑ Membrane Technology (RO, nanofiltration)
Check here if the treatment process also uses a water softener
6. Description of source water(s) (i.e. groundwater, surface water)
6 re tiktel (,) afte4---
7. Describe the treatment process(es) for the raw water.
Gl -€ i" i t t ` O �n f d. ,,� T-e an.) ; o �'c� -2 � � r7� /
8. Describe the wastewater and the treatment process(es) for wastewater generated by the
facility:
$e 1
9. Number of separate discharge points:
Outfall Identification number(s) 00 1
10. Frequency of discharge:
—
If intermittent:
Days per week discharge occurs:
Continuous ❑ Intermittent I:Xi
11. Plant design potable flowrate 7. 3 Z- MGD
Backwash or reject flow d 050 MGD
Duration: ! Fl r^ ) aL L 1-
12. Name of receiving stream(s) (Provide a map showing the exact location of each outfall, including
latitude and longitude):
�` .
C a of `go' i� 7( ° 3 l ' 2_6w
-r 4,
Page 2 of 2 C-WTP 03/05

NPDES PERMIT APPLICATION - SHORT FORM C - WTP
For discharges associated with water treatment plants
13. Please list all water treatment additives, including cleaning chemicals, that have the
potential to be discharged.
SSlut'k
J,
14.4,7 etZi•EY j G".04- I; 1 /4" Cf ; -(71,
14. Is this facility located on Indian country? (check one)
15. Additional Information:
• Provide a schematic of flow through the facility, include flow volumes at all points in
the treatment process, and point of addition of chemicals.
,4 Solids Handling Plan
16. NEW Applicants
Information needed in addition to items 1-15:
• New applicants must contact the NCDENR Customer Service Center.
Was the Customer Service Center contacted? ❑ Yes ❑ No
• Analyses of source water collected
• Engineering Alternative Analysis
• Discharges from Ion Exchange and Reverse Osmosis plants shall be evaluated using a
water quality model.
17. Applicant Certification
I certify that I am familiar with the information contained in the application and that to the
best of my knowledge and belief such information is true, complete, and accurate.
l -�h<v C CO -elan Om.� (Yc
Printed name of Person Sins
nyt
Title
r 1-53DY1
Date
Signature of Applicant
North Carolina General Statute 143-215.6 (b)(2) provides that: Any person who knowingly makes any false
statement representation, or certification in any application, record, report, plan, or other document files or
required to be maintained under Article 21 or regulations of the Environmental Management Commission
implementing that Article, or who falsifies, tampers with, or knowingly renders inaccurate any recording or
monitoring device or method required to be operated or maintained under Article 21 or regulations of the
Environmental Management Commission implementing that Article, shall be guilty of a misdemeanor punishable
by a fine not to exceed $25,000, or by imprisonment not to exceed six months, or by both. (18 U.S.C. Section
1001 provides a punishment by a fme of not more than $25,000 or imprisonment not more than 5 years, or both,
for a similar offense.)
Page 3 of 3 C-WTP 03/05

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VAL/1L ip
1-/0 tun I Ca u4 r

SLUDGE MANAGEMENT PLAN
Waste solids from the Chowan County Valhalla water treatment plant are stored in a
settling pond. Solids are periodically removed as needed by Atlantic Nutrients, Inc. and
injected on the permitted sites by Atlantic Nutrients, Inc.

FACT SHEET FOR EXPEDITED PERMIT RENEWALS
Basic Information to determine potential for expedited permit renewal
Reviewer/Date
1 \0.4 Cyr i.,,,,I
-[ / ► t /i.
Permit Number
N t— 00 3 D-1 1 ct
Facility Name
V ci, ( kc, I (a ( IT
Basin Name/Sub-basin number
s�„� GJ'L
( 0
Receiving Stream
Rperi f nac k.
Stream Classification in Permit
,g) - 1‘'�1/4,
Does permit need NH3 limits?
0 a
Does permit need TRC limits?
0 0
Does permit have toxicity testing?
1,1z, 5
Does permit have Special Conditions?
y5 (.I -a)(
Does permit have instream monitoring?
\14 5
Is the stream impaired (on 303(d) list)?
N 0
Any obvious compliance concerns?
a(..te to ,%r%;,,,
h,,,,,, - rwa� oL)-cir,
Any permit mods since last permit?
N o
Existing expiration date
11 / 30 /01
New expiration date
1 ► /,30 / I a -
New permit effective date
Miscellaneous Comments
rtie
YES_ This is a SIMPLE EXPEDITED permit renewal (administrative
renewal with no changes, or only minor changes such as TRC, NH3,
name/ownership changes). Include conventional WTPs in this group.
YES_ This is a MORE COMPLEX EXPEDITED permit renewal (includes
Special Conditions (such as EAA, Wastewater Management Plan), 303(d)
listed, toxicity testing, instream monitoring, compliance concerns, phased
limits). Basin Coordinator to make case -by -case decision.
NO This permit CANNOT BE EXPEDITED for one of the following reasons:
• Major Facility (municipal/industrial)
• Minor Municipals with pretreatment program
• Minor Industrials subject to Fed Effluent Guidelines (lb/day limits for BOD, TSS,
etc)
• Limits based on reasonable potential analysis (metals, GW remediation organics)
• Permitted flow > 0.5 MGD (requires full Fact Sheet)
• Permits determined by Basin Coordinator to be outside expedited process
TB Version 8/18/2006 (NPDES Server/Current Versions/Expedited Fact Sheet)