NC0082139_Permit Issuance_20150506

OVA
NC ENR
North Carolina Department of Environment and Natural Resources
Pat McCrory Donald R. van der Vaart
Governor Secretary
May 6, 2015
Mr. Randall D. Emory, P.E., Director of Water Resources
Greenville Utilities Commission
801 Mumford Road
Greenville, NC 27835
Subject: Issuance of NPDES Permit NCO082139
Greenville Water Treatment Plant (WTP)
1721 Waterway Road, Greenville 27835
Pitt County
Dear Mr. Randall:
The Division of Water Resources (the Division) hereby issues the attached NPDES permit for the subject
facility. 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 Division understands that you have made no significant changes to your facility since the last permit
renewal. We have made the following updates to your previous permit:
• removed monitoring for Total Zinc, Calcium and Magnesium monitoring
• added continuous flow monitoring
• updated Total Residual Chlorine limit to 17 µg/L
• updated Aluminum, Iron, Copper, Fluoride, Total Phosphorous, TKN, Nitrate -Nitrite and Total
Nitrogen monitoring to quarterly
• added updates to facility map and parameter codes
• added a re -opener clause in the permit for Whole Effluent Toxicity.
Please note that the Utilities Commission will have 18 months from the effective date of this permit to
install a continuous flow meter. Until then, instantaneous measurements can be taken noting the flow rate
and duration so that the total flow maybe reported on the DMR.
Please note that we have included a re -opener clause in the permit for Whole Effluent Toxicity
Monitoring [Section A. (4.)]. The Division includes this condition if the permittee has demonstrated
toxicity failures during the past permit cycle.
Eligibility for Coverage under the General Permit NCG590000 — The Greenville WTP is not eligible for
the general permit because there too many failures for toxicity testing.
Proposed federal regulations require electronic submittal of all discharge monitoring reports (DMRs) and
specify that, if a state does not establish a system to receive such submittals, then permittees must submit
1617 Mail Service Center, Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] Fax: [phone]Customer Service:1-877-623-6748
Internet:: www.ncwater o[g
An Equal OpportunitylAffirmative Action Employer

Mr. Randall
May 6, 2015
Page 2 of 2
DMRs electronically to the Environmental Protection Agency (EPA). The Division anticipates that these
regulations will be adopted and is beginning implementation.
The requirement to begin reporting discharge monitoring data electronically using the NC DWR's
Electronic Discharge Monitoring Report (eDMR) intemet application has been added to your NPDES
permit. [See Special Condition A. (3.)] For information on eDMR, registering for eDMR and obtaining
an eDMR user account, please visit the following web page:
http://portal.ncdenr.org/web/wq/admin/boglipu/edmr.
For information on EPA's proposed NPDES Electronic Reporting Rule, please visit the following web
site:
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 submitted within thirty
(30) days after receiving this letter. Your request must take the forth of a written petition conforming to
Chapter 150B of North Carolina General Statutes, and you must file it with the Office of Administrative
Hearings, 6714 Mail Service Center, Raleigh, North Carolina 27699-6714. Unless such a demand is
made, this permit shall remain 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 Resources or any
other Federal, State, or Local governmental permits that may be required.
If you have questions, or if we can be of further service, please contact Derek Denard at
[[e-mail]] or call [phone].
i
,
Jay Zimmerman, Dire
Division of Water Res es, NCDENR
Enclosure: NPDES Permit NCO082139 (Issuance Final)
he: Central Files
NPDES Program Files
WaRO Files/ Attn: David May
ec: Aquatic Toxicology Unit, Susan Meadows [[e-mail]]

NPDES Permit NCO082139
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER RESOURCES
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
(NPDES)
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended, the
Greenville Utilities Commission
is hereby authorized to discharge treated wastewater from a facility known as
Greenville Water Treatment Plant (WTP)
1721 Waterway Road, Greenville 27835
Pitt County
to receiving waters designated as the Tar River, within the Tar-Pamilco River Basin, in accordance with
effluent limitations, monitoring requirements, and other applicable conditions set forth in Parts I, II, III,
and IV hereof.
The permit shall become effective June 1, 2015.
This permit and the authorization to discharge shall expire at midnight on October 31, 20 1 9.
Signed this day May 6, 2015.
/-Z i ve�;;
VIvisS-afZimmerman, Directorion of Water Resources
By Authority of the Environmental Management Commission
Page 1 of

NPDES Permit NCO082139
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked, and as of this 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 described herein.
Greenville Utilities Commission
is hereby authorized to:
1. continue to operate a conventional technology water treatment plant [coagulation, flocculation,
sedimentation, and filtration] with discharge of wastewaters from media filter backwash and
sedimentation basins with a design potable flowrate of 22.5 MGD and a maximum, monthly average
wastewater discharge of 0.800 MGD, with water and wastewater treatment consisting of;
• pre settling reservoir (63 MG)
• rapid mix tank
• flocculation basins
• sedimentation basins
• ozone contactor basin(s)
• multimedia filters
• finished water storage tanks
• an effluent pump station with an effluent pump and a diesel backup pump
• chemical usage consists of [note: note all chemicals currently in use]
o alum / aluminum sulfate
o fluoride
o ammonia nitrogen / chloramines
o sodium permanganate
o powered activated carbon
o copper sulfate
o sodium hydroxide
o acidic salts
o ozone reagents: malonic acid / potassium acid malonate
o ortho phosphate
o polyacrylamide
o sodium hypochlorite
o ammonium hydroxide
o sodium bisulfate
located at the Greenville Water Treatment Plant (WTP), 1721 Waterway Road, Greenville, Pitt
County; and
2. discharge from said treatment works via Outfall 001 at a location specified on the attached map,
into the Tar River [Stream Segment 28-(94)], currently a Class C; NSW waterbody within
Subbasin 03-03-05 of the Tar -Pamlico River Basin.
Page 2 of 7

NPDES Permit NCO082139
PART I
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
[15A NCAC 02B .0400 et seq., 02B .0500 seq.]
During the period beginning on the effective date' of this permit and lasting until expiration, the
Permittee is authorized to discharge filter backwash via Outfall 001. Such discharges shall be limited
and monitored' by the Permittee as specified below:
j EFFLUENT°
LimT5141401t1NG`1=
`UIItE~E
c�c?�n rSTxc
[PTEiR GEODES]
�._
lYfonthly
daily
measurementamp�e
;Sample;
.Average
Maximum
Frequency
r
Type
L'oca �o
Flow (MGD) 2
50050
Continuous 2
Recording 2
Effluent
Total Suspended Solids (mg/L)
C0530
30.0 mg/L
45.0 mg/L
Weekly
Grab
Effluent
pH (su)
00400
Not < 6.0 or > 9.0
standard units
Weekly
Grab
Effluent
Total Residual Chlorine 3 (µg/L)
50060
17 µgA, 3
Weekly
Grab
Effluent
Turbidity (NTLT)
00070
Weekly
Grab
Effluent
Total Aluminum 4 (µg/L)
01105
Quarterly
Grab
Effluent
Total Iron 4 (µg/L)
01045
Quarterly
Grab
Effluent
Total Copper 4 (mg/L)
01042
Quarterly
Grab
Effluent
Total Fluoride 4 (µg/L)
00951
Quarterly
Grab
Effluent
Ammonia Nitrogen (mg/L)
C0610
Quarterly
Grab
Effluent
Total Phosphorous (TP) (mg/L)
C0665
Quarterly
Grab
Effluent
TKN (mg/L)
00625
Quarterly
Grab
Effluent
NO SN + NO2-N (mg/L)
00630
Quarterly
Grab
Effluent
TN (mg/L)
C0600
Quarterly
Grab
Effluent
Chronic WET Testing 6
TGP3B
Quarterly
Grab
Effluent
Footnotes:
1. No later than 270 days from the effective date of this permit, begin submitting discharge monitoring reports
electronically using NC DWR's eDMR application system. See Special Condition A. (3.).
2. The Utilities Commission will have 18 months from the effective date of this permit to install a continuous flow meter.
Until then, instantaneous measurements can be taken noting the flow rate and duration so that the total flow maybe
reported on the DMR.
3. The Division shall consider TRC effluent values reported below 50 µg/L to be compliant with the permit.
However, the Permittee shall continue to record and submit all values reported by a North Carolina -certified
laboratory method (including field certified), even if these values fall below 50µg/L.
4. Samples shall be collected concurrently with WET -test samples.
5. For a given wastewater sample, TN = TKN + NO3-N + NO2 N, where TN is Total Nitrogen, TKN is Total Kjeldahl
Nitrogen, and NO3 N and NO2-N are Nitrate and Nitrite Nitrogen, respectively.
6. Whole Effluent Toxicity (WET) testing - testing of Ceriodaphnia dubia shall be performed as 7-day pass/fail test at 90%
effluent concentration, during January, April, July and October [See A. (2)].
Comments:
Samples shall be taken at the outfall but prior to mixing with the receiving waters.
There shall be no discharge of floating solids or foam in other than trace amounts.
Page 3 of 7

NPDES Permit NCO082139
A. (2.) CHRONIC TOXICITY PASSNAIL MONITORING (QUARTERLY)
[15A NCAC 02B .0500 et seq.]
The permittee shall conduct quarterl chronic toxicity tests using test procedures outlined in the "North
Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised December 2010, 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 January, April, July and October. These months signify the first month of each three
month toxicity testing quarter assigned to the facility. Effluent sampling for this testing must be
obtained during representative effluent discharge and 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, DWR Form AT-1 (original) is to be sent to the following address:
Attention: North Carolina Division of Water Resources
Water Sciences Section/Aquatic Toxicology Branch
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Water 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 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
Water 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 Resources indicate potential impacts to the receiving stream, this permit may be re -opened and
modified to include alternate monitoring requirements or limits.
Page 4 of 7

NPDES Permit NCO082139
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.
A. (3.) ELECTRONIC REPORTING OF DISCHARGE MONITORING REPORTS
[G. S . 143-215.1(b)]
Proposed federal regulations require electronic submittal of all discharge monitoring reports (DMRs)
and specify that, if a state does not establish a system to receive such submittals, then permittees must
submit DMRs electronically to the Environmental Protection Agency (EPA). The Division anticipates
that these regulations will be adopted and is beginning implementation in late-*2013.
NOTE: This special condition supplements or supersedes the following sections within Part 11 of this
permit (Standard Conditions for NPDES Permits):
• Section B. (11.)
• Section D. (2.)
• Section D. (6.)
• Section E. (5.)
Signatory Requirements
'Reporting
Records Retention
Monitoring Reports
1. Reporting [Supersedes Section D. (2.) and Section E. (5.) (a)1
Beginning no later than 270 days from the effective date of this permit, the permittee shall begin
reporting discharge monitoring data electronically using the NC DWR's Electronic Discharge
Monitoring Report (eDMR) internet application.
Monitoring results obtained during the previous month(s) shall be summarized for each month and
submitted electronically using eDMR. The eDMR system allows permitted facilities to enter
monitoring data and submit DMRs electronically using the internet. Until such time that the state's
eDMR application is compliant with EPA's Cross -Media Electronic Reporting Regulation
(CROMERR), permittees will be required to submit all discharge monitoring data to the state
electronically using eDMR and will be required to complete the eDMR submission by printing,
signing, and submitting one signed original and a copy of the computer printed eDMR to the
following address:
NC DENR / DWR / Information Processing Unit
ATTENTION: Central Files / eDMR
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
If a permittee is unable to use the eDMR system due to a demonstrated hardship or due to the facility
being physically located in an area where less than 10 percent of the households have broadband
access, then a temporary waiver from the NPDES electronic reporting requirements may be granted
and discharge monitoring data may be submitted on paper DMR forms (MR 1,1.1, 2, 3) or
alternative forms approved by the Director. Duplicate signed copies shall be submitted to the
mailing address above.
Page 5 of 7

NPDES Permit NCO082139
Requests for temporary waivers from the NPDES electronic reporting requirements must be
submitted in writing to the Division for written approval at least sixty (60) days prior to the date the
facility would be required under this permit to begin using eDMR. Temporary waivers shall be valid
for twelve (12) months and shall thereupon expire. At such time, DMRs shall be submitted
electronically to the Division unless the permittee re -applies for and is granted a new temporary
waiver by Ahe Division.
Information on eDMR and application for a temporary waiver from the NPDES electronic reporting
requirements is found on the following web page:
http://portal.ncdenr.or web/wg/admin/bog/ipu/edmr
Regardless of the submission method, the first DMR is due on the last day of the month following
the issuance of the permit or in the case of a new facility, on the last day of the month following the
commencement of discharge.
2. Signatory Requirements [Supplements Section B. (11.) (b) and supersedes Section B. (11.) (d)1
All eDMRs submitted to the permit issuing authority shall be signed by a person described in Part II,
Section B. (11.)(a) or by a duly authorized representative of that person as described in Part H,
Section B. (11.)(b). A person, and not a position, must be delegated signatory authority for eDMR
reporting purposes.
For eDMR submissions, the person signing and submitting the DMR must obtain an eDMR user
account and login credentials to access the eDMR system. For more information on North
Carolina's eDMR system, registering for eDMR and obtaining an eDMR user account, please visit
the following web page:
http://porial.ncdenr.or web/wq/admin/bog/ipu/edmr
Certification. Any person submitting an electronic DMR using the state's eDMR system shall make
the following certification [40 CFR 122.22]. NO OTHER STATEMENTS OF CERTIFICATION
WILL BE ACCEPTED:
U 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 for gathering the information,
the information submitted 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 fines and imprisonment for knowing violations. "
3. - Records Retention_ [Supplements Section D. (6.)1
The permittee shall retain records of all Discharge Monitoring Reports, including eDMR submissions. These
records or copies shall be maintained for a period of at least 3 years from the date of the report. This period
may be extended by request of the Director at any time [40 CFR 122.411.
Page 6 of 7

NPDES Permit NC0082139
A. (4.) PERMIT RE -OPENER: WHOLE EFFLUENT TOXICITY
[G.S. 143-215.1(b)]
Whole Effluent Toxicity monitoring results indicating aquatic toxicity may result in the Division of
Water Resources re -opening this permit or requesting by letter that further action be taken. Additional
metals testing, a toxicity identification evaluation, a toxicity reduction evaluation, and/or an assessment
of discharge treatment alternatives may be requested.
Page 7 of 7

Y Waterway Rd
Outfall 001
t�
[flows southeast]
Tar River
[flows southeast]
\t
-1
n ` •dam i
Approximate
Facility Boundary
�� - t "'•0 as
• :_` . _ Qd�
� � I
Jp/ ,
�rrT-GREE 1 U , • '/'
R
-.�
13 23
_• — IT
13
Greenville Utilities Commission
Facility
Greenville Water Treatment Plant
Location A
1721 Waterway Road, Greenville NC 278M
Seale 1:24,000
Receiving Stream: Tar River Stream Class: QNSW
Stream Segmen[: 28-(94) Sub -Basin: 03-03-05
Drainaee Basin: Tar -Pamlico RUC: 03020103
NPDES Permit NC0082139
latitude: 35038'04" Longitude: 77023'55"
1
TTOy,�
State Grid/USGS Ouad: E29NW/ Greenville NW, NC
1V h
Pitt C011Tlty

NPDES PERMIT NEW / RENEWAL
V\l (6 ,e^ DRAFT / FINAL
11 CHECK LIST
FILE CONTENTS: Facility G-YceHxu. I /c lit. �Y
Permit No.
Left e:
BIMS Tracking Slip
NPDES Permit Writer: DEREK DENARD
Right Side:
❑
F— /Streamline Package Sheet
(to region, only if streamlined)
—a"0-Draft Permit Cover Letter.
(add new policy text; summarize major changes to permit)
Vraft Permit
(order: cover; Sup to Cover Sheet; effluent page (s), special conditions; map)
Facility Map
(E-Map; include facility Outfalls; U and D sample locations)
M act Sheet
(documents permit writer's issues and/or re -issue logic)
❑✓lermit Writer's Notes
(if not in Facts Sheet -- chronology, strategy, DMR Review, RPA, etc.)
�/ Staff Report from Region
(as appropriate -- not needed if streamlined)
Id Permit
9
(Text, Effluent Sheets and Special Conditions)
Permit Application.
(New Permit or Renewal; any additional permittee correspondence)
Ii-l"Acknowledgement Letter
(NPDES Unit written response to Renewal Application)
❑ Permittee Responses
(to acknowledgement letter, if any)
❑ Waste Load Allocation
(reference date; notes if recalculated for current action)
N te: Italics indicate special
conditions not always required or applicable.
BIMS update "initiated DRAFT
deer Review Submitted to r
tL/P er Review completed by
Updated Public Notice Syst [date] _
miffed for Public tice on
Regional Staff view [Draft mailed /
rr 7
v.n : Date 2 M I% Admin cutoff/ PN date
Date_&p AU5
�b is -
Newspaper
toAV,Pub,
v Li + n +
El Re Tonal Office Draft Approved by Klj LV r l , L`
Updated BIMS Events: Date ? ('
0 Permittee Review [Dr mail /emailed] to I ` `rt 4l 1' � Date_
q/TOX (ATB) Review [Draft Permit a ai to ) A Shy+ 11,k7f I 1�1
Actual Notice date(s) [ J
[Ilt ath o�r/v_ , `(^�I�ar� St�rtV +bow
Date
Comments ments received Date
Date 2
❑ TOX (ATB) Review/Approval by NV Received Date
0M ditional Review [other] J l h t-4' I /
FINAL to oh / Tom for signature [date]
z�� l S Letter Dated 2 ��
Finals Transferred to Server (Permits Folder) �� ?�� f BIMS Final Updates: Events Lintits
X /Scan Final Does / PDF (w/ signature)/[Date] S M if BIMS /Limits Double-check Email to Charles
. Email Finals to �!� f d✓a ( Y �yy% Date
Version 07Nov2014

Denard, Derek
From: Bullock, Robert
Sent: Friday, March 13, 2015 9:54 AM
To: Denard, Derek
Cc: Vinson, Scott; Tankard, Robert
Subject: RE: Draft Permit NC0082139 Greenville WTP
Derek,
The cover letter has "updated Total Residual Chlorine limit to 17 W This should be ug/l.
In the description of the permit the only treatment unit that is used for treatment of discharge water is the
sedimentation basin. All other items listed are for treatment of the drinking water and may not need to be listed.
These items need to be added to the description:
Effluent pump station with 1 effluent pump
Diesel backup pump
Robbie Bullock
W WTP Consultant
Division of Water Resources
Water Quality Regional Operations
252-948-3843 Phone
"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: Denard, Derek
Sent: Thursday, March 12, 2015 1:48 PM
To: May, David; Bullock, Robert; Tankard, Robert; Vinson, Scott; Meadows, Susan; Reid, Steve
Subject: Draft Permit NC0082139 Greenville WTP
Please find the attached draft permit for NC0082139 Greenville WTP. Please provide your comments, if any, to me no
later than April 17, 2015 .
AM DerekCDenard
Enrfonme wspwas t
NCDENR Dwsionof Water Resources
W titer Qua[ny pernnm section
Comps ,rxe 6 EV-&ed Permittirg ttr:it
(919)W7-63W
derekdererd@mdeargW
1617 Mti1$nta G--nvr.A Vp.#X 276994617
httpwp aU<::,-. _!::a:rn�.tt;tn-,.,'x
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.

Cooke
COMMUNICATIONS
NORTH CAROLINA LLC
The Daily Reflector - The Daily Advance - The Rocky Mount Telegram
Bertie Ledger- Chowan Herald - Duplin Times - Fannville Enterprise - Perquimans Weekly - Standard Laconic
Tarboro Weekly - Times Leader- Williamston Enterprise Check#
PO Box 1967
Greenville NC 27835 Date Paid
NCDENR
1617 MAIL SERVICE CENTER
RALEIGH NC 27699-1617
Account: 116382
Ticket: 39424
A/R Rep
Copy Line: Notice of Intent to Issue a NPDES
Wastewater Permit
Lines: 35
Total Price: $90.20
PUBLISHER'S AFFIDAVIT
NORTH CAROLINA
Pitt County
affirms that she is clerk of Daily
Reflector, a newspaper published daily at Greenville, North Carolina, and that the
advertisement, a true copy of which is hereto attached, entitled Notice of Intent to
Issue a NPDES Wastewater Permit was published in said Daily Reflector on the
following dates:
Thursday, March 12, 2015
and that the said newspaper in which such notice, paper, document or legal
advertisement was published, was at the time of each and every publication, a
newspaper meeting all of the requirements and qualifications of Chapter 1, Sec-
tion 597 of the General Statutes of North Carolina and was a qualified newspaper
within the Z
of Chapter 1, Section 597 of the General Statutes of North
Carolina.
Affinne and subscribed before me this 1 th day of March 2015
(Notary Public Si nature)
0a
(Notary Public Printed Name)
My commission expires
NOTARY
PUBLIC
Public Notice
North Carolina Environmental Manage-
ment 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
permit to the person(s) listed below.
Written comments regarding the pro-
posed permit will be accepted until 30
days after the publish date of this no-
tice. The Director of the NC Division
of Water Resources (DWR) may hold a
public hearing should there be a signif-
icant degree of public interest Please
mail comments and/or information re-
quests to DWR at the above address. In-
terested persons may visit the DWR 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:
httpJ/portal.ncdenr.orgtweb/wq/swp/
ps/npdes/calendar, or by calling (919)
807-6304.
Greenville utilities Commission applied
to renew NPDES permit for Green-
ville WTP [NC00821391 discharging fik
ter -backwash wastewater to Tar River,
Tar -Pamlico River Basin.
3/12115

DENR / DWR / NPDES
EXPEDITED FACT SHEET - NPDES PERMIT DEVELOPMENT
NPDES Permit NCO082139
Verek Venard, Compliance & 1✓x edited Permitting Unit / 919-807-6307
06Mar201 f
-
Facilety Information
Applicant/Facility Name
Greenville Utilities Commission
Greenville Water Treatment Plant (WTP)
Applicant Address .
801 Mumford Road, Greenville, NC 27835
Facility Address
1721 Waterway Road, Greenville, NC 27835
Permutted Flow, (MGD)
Not limited
Type of Waste
Water Plants and Water Conditioning Discharge — dechlorinated
filter -backwash - Conventional WTP System
Facility Class.
Physical Chemical 1
County
Pitt
Status;
Renewal
Regional
Office.
WaRO
:..
Stream Characteristics
Receryri ;.
g Stream ��
Tar River
tream Classifcon , .�
ah
C; NSW
Stream`Segment
28-(94)
Drainage basin
Tar -Pamlico
Summer 9Q1,0 (cfs)
0
Subbasm
03-03-05
Winter 7Q10 :(cis)
0
use: Support
Aquatic Life
30Q2 (cfs)
0
303:(d Zasfed
No
Average flow (cfs)
0
S#ate Grid
E29NW
G {%)
100%
USGS Topic Quad
Greenville NW, NC
Facility Summarx
This facility is a conventional technology water treatment plant [coagulation, flocculation, sedimentation,
and filtration] with discharge of wastewaters from media filter backwash and sedimentation basins with a
design potable flowrate of 22.5 MGD and a maximum monthly average wastewater discharge of
0.800 MGD based on data submitted. The facility consists of the following water and wastewater treatment
units:
• pre settling reservoir (63 MG)
• rapid mix tank
• flocculation basins
• sedimentation basins
• ozone contactor basin(s)
• multimedia filters
• finished water storage tanks
• chemical usage consists of [note: note all chemicals currently in use]
o alum / aluminum sulfate
o fluoride
o ammonia nitrogen / chloramines
o sodium permanganate
o powered activated carbon
o copper sulfate
o sodium hydroxide
o acidic salts
Fact Sheet
Renewal 2015 -- NPDES Permit NCO082139
Page 1

0 ozone reagents: malonic acid / potassium acid malonate
0 ortho phosphate
o polyacrylamide
o sodium hypochlorite
o ammonium hydroxide
o sodium bisulfate
Monthly, average FLOW (MGD) — Last 36 months of reported discharge Dec2011-Nov2014:
[Ave 0.502 MGD; Maximum, Monthly average flow = 0.800 MGD]
Eli ig bility for Coverage under the General Permit NCG590000 — The Greenville WTP is not eligible for the
general permit because there too many failures. WET evaluations showing a 67% passing rate for three
years (Jan2012-0ct2014) and no failures in the most recent 4 quarters. See attached data spreadsheet.
Toxici — With an IWC >0.25%, this permit requires Chronic Whole Effluent Toxicity (WET) testing
using Ceriodaphnia dubs to be performed as a 7-day pass/fail test at 90% effluent concentration, during
January, April, July and October [TGP3B]. For Conventional WTP's failing toxicity tests a toxicity re -
opener clause was inserted into the draft permit. Three (3) toxicity tests were reported as "FAIL" within
two years.
Renewal Summary — This permit reflects discharge at Outfall 001. DWR updated the facility description
and Map; added parameter codes to Section A. (L); added Electronic Reporting - Discharge Monitoring
Reports page [Section A. (3.]; added continuous flow monitoring; updated TRC limit to 17 mg/L; updated
Aluminum, Iron, Copper, Fluoride, Total Phosphorous, TKN, Nitrate -Nitrite and Total Nitrogen
monitoring to quarterly; removed Total Zinc, Calcium and Magnesium monitoring; and added re -opener
clause for toxicity.
Stream — Discharge from WTP for Outfall 001 is into Tar River [Stream Segment 28-(94)]. The segment
[28-(94)] is not currently listed as impaired in the 2014 North Carolina 303(d) List.
RPA — A Reasonable Potential Analysis (RPA) was conducted on Copper, Zinc, Aluminum, Iron and
Fluoride effluent parameters data because Discharge Monitoring Reports (DMRs) reported concentration
above method -detection levels (MDLs) for the past four and one half (4 1 /2) years (June2010-Nov2014).
[See attached RPA summary sheets.]
Fact Sheet
Renewal 2015 -- NPDES Permit NCO082139
Page 2

Permit NCO082139
Facility Greenville WTP
maximum, montly flow 36 moni 0.800
:.::::::.::.:::::::
X.
.
:. .:::.± :........
........................ ....................
`t
...............::
:knit : `
:::
.; ..:.
.
'
#>�
::::ii 1r:<
::.:.:.::.::.:....::::.;
im
:..:.........::::.:::.:.:::::.:::.:.:::::.::..::.:..::.:.:::::.:::.::::.:::...:..:.:.:::::::::.::.:
.......................................................................................................
............
::::.:.::::.
.
:a%;oir:
.........................................................
:.....:.................. .:.:::::::.........::.:..:.
f::.'
Qf.....................-..
3115
...........
%
%
Continuou
> 0.05 MGD apply
change flow to
Flow (MGD)
50050
s
Recording
Effluent
continuous/recording
2
continous
recording
Total Suspended Solids (mg/L)
CO530
30.0 mg/L
45.0 mg/L
Weekly
Grab
Effluent
>0.5 MGD weekly, maintain
maintain
Turbidity (NTU)
0070
Monthly
Grab
Effluent
>0.5 MGD, stream is not impaired,
no limit, apply weekly
maintain
Total Residual Chlorine (µg/L)
50060
17 µg/L
2/month
Grab
Effluent
IWC calculation=I00%, Allowable
Cw = 17 ug, apply min of 17 ug/I
3
change limit to 17
mg/L
pH (su)
00400
Not < 6.0 or > 9.0
Jonth
Grab
Effluent
standard units
maintain
>0.5 MGD weekly
Alum in use, No RP, Predicted Max
Total Aluminum (mg/L)
01105
Quarterly
Grab
Effluent
>_ 50% of Allowable Cw - apply
4
measurement
Quarterly Monitoring
quarterly
RP for AL(Cu,Zn,Ag,Fe,CI) - apply
Total Iron (µg/L)
01045
Quarterly
Grab
Effluent
Quarterly Monitoring in conjunction
4
measurement
with TOX Test
quarterly
RP for AL(Cu,Zn,Ag,Fe,CI) - apply
Total Copper (mg/L)
01042
Quarterly
Grab
Effluent
Quarterly Monitoring in conjunction
4
measurement
with TOX Test
quarterly
Total Manganese (µg/L)
01055
Quarterly
Grab
Effluent
Not WS stream, maintain quarterly
3
maintain

Total Fluoride (mg/L)
00951
Quarterly
Grab
Effluent
No RP and uses Fluoridated
4
measurement
backwash, Apply Quarterly
quarterly
Total Zinc (mg/L)
01092
4
remove
Calcium
remove
Magnesium
remove
Ammonia Nitrogen
C0610
Quarterly
Grab
Effluent
uses ammonia nitrogen/ chloramines
measurement
quarterly
Total Phosphorous (TP) (mg/L)
C0665
Quarterly
Grab
Effluent
>0.05 MGD, quarterly monitoring
measurement
quarterly
TKN' (mg/L)
625
Quarterly
Grab
Effluent
>0.05 MGD, quarterly monitoring
5
measurement
quarterly
NO3-N + NO2-N 5 (mg/L)
630
Quarterly
Grab
Effluent
>0.05 MGD, quarterly monitoring
5
measurementquarterly
s
TN (mg/L}
C0600
Quarterly
Grab
Effluent
>0.05 MGD, quarterly monitoring
5
measurement
quarterly
Chronic WET Testing
TGP3B
Quarterly
Grab
Effluent
IWC > 0.25% Chronic test at IWC
6
maintain
Fotenotes:
1 1. No later than 270 days from the effective date of this permit, begin submitting discharge monitoring
reports electronically using NC DWR's eDMR application system. See Special Condition A. (3.).
2 The Town will have 18 months from the effective date of this permit to install a continuous flow meter. Until
then instantaneous measurements can be taken with the duration of discharge to be noted in log books and a
total daily discharge reported on the DMR.
3 The Division shall consider TRC effluent values reported below 50 µg/L to be compliant with the permit.
However, the Permittee shall continue to record and submit all values reported by a North Carolina -certified
laboratory method (including field certified), even if these values fall below SOµg/L.
4 Samples shall be collected concurrently with WET -test samples.
For a given wastewater sample, TN = TKN + NO3-N + NO2-N, where TN is Total Nitrogen, TKN is Total Kjeldahl
Nitrogen, and NO3-N and NO2-N are Nitrate and Nitrite Nitrogen, respectively.

Greenville WTP 2014 Freshwater RPA - 95% Probability195% Confidence
NCO082139 MAXIMUM DATA POINTS = 58
Qw (MGD) = 0.80
WWTP/WTP Class: PC-1
IQIOS (cfs)= 0.00
IWC @ IQIOS = 100.0%
7Q I OS (cfs) = 0.00
IWC @ 7Q I OS = 100.0%
7QIOW (cfs) = 0.00
IWC @ 7QIOW = 100.0%
30Q2 (cfs) = 0.00
IWC @ 30Q2 = 100.0%
Avg. Stream Flow, QA (cfs) = 0.00
IWC @ QA = 100.0%
Receiving Stream: Tar River
Stream Class: C; NSW
Outfall 001
Qw = 0.8 MGD
PARAMETER
STANDARDS a CRITERIA (2)
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
TYPE
J
(1)
NC WQS / Applied '/2 FAV /
a
z
'
Cl # Det. Max Pred Allowable Cw
Chronic Standard Acute
CW
Acute: 7.3
RID for AL(Cu,ZnA9,Fe,Gn.- apply Quarterly
Copper (AL)
NC
7 FW 7.3
ug/L
58 27
53.0
_ _ _ _ - — - — - _ _ _ —
Monitoring In conjunctlon with`<TOX Test
Chronic: fF
RP for AL(Cu,Zn,Ag,Fe,CI) - apply Quarterly
29 value(s) > Allowable Cw
Monitoring In conjunction with TOX Test
Acute: NO WQS
Fluoride
NC
1800 FW
ug/L
58 2
745.0
_ _ _---_ _ _
_
Chronic: 1,800.0
_ __-_-_----__
No RP - Fluoride in use -apply quarterly monttoring
No value > Allowable Cw
In conjunction with TOX Test;
Acute: 67.0
No RP Predicted'Max < 50%'cf Allowable Cw - No
Zinc (AL)
NC
50 FW 67
ug/L
58 5
20.0
_ ----- -
Monitoring required_- -_----_--
Chronic: 50.0
_—_
No RP, Predicted Max < 50% of Allowable Cw - No
No value > Allowable Cw
Monitoring requlred
Acute: NO WQS
Aluminum
NC
8000 HH
µg/L
58 58
4,850.0
-_ _ ____—__ _ —
Chronic: 8000.0
--_ — --_ ---------_
No RP , Predicted Max t 5095 ;of Allowable Cw -
No value > Allowable Cw
apply Quarterly Monitoring, Alarm In use
Acute: NO WQS
Iron
NC
1000 FW
50
µg/L
58 58
2,000.0
Chronic: 1000.0
RP for AL(Cu,ZnAg,Fe,CI) - apply Quarterly
8 values > Allowable Cw
Monitoring in conjunction with TOX Test
NCO082139 9595 FRESHWATER RPA2014 22.xlsm, rpa
Page 1 of 1 2/20/2015

REASONABLE POTENTIAL ANALYSIS
s
Copper (AL)
9sc'PASTE SPECIAL
Values^then "COPY"
Fluoride
. Maximum data
points = 58
Date
Data
BDL=1/2DL
Results
Date
Data
BDL=1/2DL
1
` 2012
16
16
Sid Dev.
8.8466
1
2012
<
100
50
2
2012
16
16
Mean
11.1897
2
2012
200
200
3
2012
12
12
C.V.
0.7906
3
2012
200
200
4
2012
18
18
n
58
4
2012
<
100
50
5
2012
38
38
5
2012
<
100
50
6
2012
53
53
Mult Factor =
1.00
6
2012
<
100
50
7
2012
13
13
Max. Value
53.0 ug/L
7
2012
<
100
50
8
2012
<
20
10
Max. Fred Cw
53.0 ug/L
8.
2012
<
100
50
9
2012
<
20
10
9
2012
<
100
50
10
2012
<
10
5
10
2012
<
100
50
11
2012
<
10
5
11
2012
<
100
50
12
2012
<
10
5
12
2012
<
200
100
13
2012
<
10
5
13
2012
<
100
50
14
2013
<
10
5
14.
2013
<
100
50
15
2013
<
10
5
15
2013
<
100
50
16
2013
<
10
5
16.
2013
<
100
50
17
2013
<
10
5
17
2013
<
100
50
18
2013
<
10
5
18.
2013
<
100
50
19
2013
<
10
5
19
2013
<
100
50
20
2013
<
10
5
20
2013
<
100
50
21
2013
<
10
5
21
2013
<
279
139.5
22
2013
22
22
22.
2013
<
655
327.5
23
2013
14
14
23
2013
<
190
95
24
2013
12
12
24.
2013
<
950
475
25
2013
23
23
25
2013
<
210
105
26
2013
16
16
26
2013
<
120
60
27
2013
16
16
27
2013
<
130
65
28
2013
25
25
28
2013
<
190
95
29
2013
15
15
29
2013
<
230
115
30
2013
18
18
30
2013
<
470
235
31
2013
14
14
31.
2013
<
310
155
32
2013
12
12
32
2013
<
1490
745
33
2013
14
14
33
2013
<
160
80
34
2013
11
11
34
2013
<
232
116
35
2013
<
10
5
35
2013
<
140
70
36
2013
<
t0
5
36
2013
<
300
150
37
2013
<
10
5
37
2013
<
290
145
38
2014
<
10
5
38
2014
<
1230
615
39
2014
<
10
5
39
2014
<
260
130
40
2014
<
10
5
40
2014
<
179
89.5
41
2014
<
10
5
41.
2014
<
130
65
42
2014
<
10
5
42
2014
<
100
50
43
2014
<
10
5
43
2014
<
380
190
44
2014
<
10
5
44.
2014
<
350
175
45
2014
<
10
5
45
2014
<
480
240
46
2014
<
10
5
46
2014
<
650
325
47
2014
<
10
5
47
2014
<
200
100
48
2014
15
15
48
2014
<
760
380
49
2014
<
10
5
49
2014
<
230
115
50
2014
16
16
50
2014
<
720
360
51.
2014
<
10
5
51
2014.
<
580
290
52
2014
16
16
52
2014
<
340
170
53
2014
13
13
53
2014
<
370
185
54
2014
<
10
5
54.
2014
<
220
110
55
2014
11
11
55
2014
<
180
90
56
2014
12
12
56
2014
<
620
310
57
2014
23
23
57
2014
<
210
105
58
2014
<
10
5
58
2014
<
450
225
. Maximum data
paints = 58
Results
SW Dev.
142.14113,
Mean
152A569
C.V.
0.9323
n
58
Mult Factor= 1.00
Max. Value 745.0 ug/L
Max. Fred Cw 745.0 ug/L
NC0082139 9595 FRESHWATER RPA2014_22, data
- i - 2/11/2015

REASONABLE POTENTIAL ANALYSIS
18
`PASTE SPECIAL
19
Use "PASTE SPECIAL
Zinc (AL)
Values " than "Copt•
Aluminum
Values"then"COPY"
'Use
. Maximum data
. Maximum tlata
points o 68
points = 58
Date
Data
BDL=112DL
Results
Date Data
BDL=1/20L
Results
1
2012
<
10
5
Std Dev.
2.7712
1
2012
2190
2190
StillDev.
868.7089
2
2012
<
10
5
Mean
5.9310
2
2012
2220
2220
Mean
1317.6379
3
2012
<
10
5
C.V.
0.11672
3
2012
1410
1410
C.V.
0.6593
4
2012
<
10
5
In58
4
2012
2430
2430
It
58
5
2012
<
10
5
5
2012
4770
4770
6
2012
<
10
5
Mull Factor =
1.00
6.
2012
192
192
Mull Factor=
1.00
7
2012
<
10
5
Max. Value
20.0 ug/L
7
2012
1700
1700
Max. Value
4850.0 Ng/L
8
2012
<
20
10
Max. Pred Cw
20.0 ug/L
8
2012
1300
1300
Max. Pred Cw
4850.0 pg/L
9
2012
<
20
10
9.
2012
980
980
10
2012
<
10
5
10
2012
1150
1150
11
2012
<
10
5
11
2012
1350
1350
12
2012
<
10
5
12
2012
701
701
13
2012
<
10
5
13.
2012
549
549
14
2013
10
5
14
2013
570
570
15
2013
<
10
5
15
2013
497
497
16
2013
<
10
5
16
2013
1480
1480
17
2013
<
10
5
17
2013
696
696
18
2013
<
10
5
18
2013
1230
1230
19
2013
<
10
5
19
2013
4850
4850
20
2013
<
10
5
20
2013
2170
2170
21
2013
<
10
5
21
2013
999
999
22r
2013
<
10
5
22
- 2013
2300
2300
23
2013
<
10
5
23
2013
1220
1220
24
2013
<
10
5
24
2013
1050
1050
25.
2013
<
10
5
25
2013
1640
1640
26'
2013
<
10
5
26
2013
2840
2840
27
2013
<
10
5
27
2013
1580
1580
28.
2013
12
12
28
2013
1320
1320
29
2013
<
10
5
29
2013
1380
1380
30
2013
13
13
30
2013
1160
1160
31'
2013
<
10
5
31
2013
1050
1050
32
2013
13
13
32
2013
908
908
33
2013
<
10
5
33
2013
1170
1170
34
2013
20
20
34
2013
737
737
35
2013
11
11
35
2013
820
820
36
2013
<
10
5
36
2013
724
724
37
2013
<
10
5
37
2013
1100
1100
38
2014
<
10
5
38
2014
1600
1600
39'.
2014
<
10
5
39
2014
979
979
40
2014
<
10
5
40
2014
358
358
41
2014
<
10
5
41
2014
137
137
42,
2014
<
10
5
42
2014
450
450
43
2014
<
10
5
43
2014
543
543
44
2014
<
10
5
44
2014
1990
1990
45.
2014
<
10
5
45
2014
1420
1420
46
2014
<
10
5
46
2014
892
892
47
2014
<
10
5
47
2014
947
947
48
2014
<
10
5
48-
2014
1280
1280
49
2014
<
10
5
49
2014
789
789
50
2014
<
10
5
50
2014
1620
1620
51
2014
<
10
5
51.
2014
801
801
52
2014
<
10
5
52
2014
1460
1460
53.
2014
<
10
5
53
2014
1580
1580
54'<
2014
<
10
5
54
2014
1150
1150
55
2014
<
10
5
55
2014
1060
1060
56
2014
<
10
5
56
2014
1290
1290
57'
2014
<
10
5
57
2014
922
922
58
2014
<
10
5
58
2014
722
722
NCOOB2139 9595 FRESHWATER RPA2014_22, data
2' 2/1112015

REASONABLE POTENTIAL ANALYSIS
20
Iron
Date
Data
BDL=112DL
1 2012
1330
1330
2 2012
1400
1400
3 2012
706
706
4 2012
1010
1010
5 2012
2000
2000
6 2012
1030
1030
7 2012
888
888
8 2012
510
510
9 2012
280
280
10 2012
778
778
11 2012
693
693
12 2012
331
331
13 2012
308
308
14 2013
351
351
15 2013
205
205
16 2013
709
709
17 2013
294
294
18 2013
514
514
19 2013
1570
1570
20 2013
839
839
21 2013
459
459
22 2013
994
994
23 2013
582
682
24 2013
603
603
25 2013
781
781
26 2013
1390
1390
27 2013
728
728
28 2013
770
770
29 2013
655
655
30 2013
498
498
31 2013
343
343
32 2013
294
294
33 2013
349
349
34 2013
.242
242
35 2013
264
264
36 2013
192
192
37 2013
401
401
38 2014
542
542
39 2014
292
292
40 2014
92
92
41 2014
.262
262
42 2014
158
158
43 2014
214
214
44 2014
556
556
45 2014
630
630
46 2014
343
343
47 2014
523
523
48 2014
514
514
49 2014
275
275
50 2014
542
542
51 2014
323
323
52 2014
470
470
53 2014
522
522
54 2014
367
367
55. 2014
440
440
56 2014
513
513
57 2014
628
628
58. 2014
1060
1060
Use "PASTE SPECIAL-
Values"then"COPY".
Maximum data points =
58
Results
Sid Dev.
379.0577
Mean
597,5345
C.V.
0.6344
n
58
Mult Factor = 1.00
Max. Value 2000.0 pg/L
Max. Pred Cw 2000.0 pg/L
NC0082139 9595 FRESHWATER RPA2014_22, data
- 3 - 2/11/2015

2014 Freshwater RPA - 95% Probability/95% Confidence
MAXIMUM DATA POINTS = 58
REQUIRED DATA ENTRY
Table 1. Project Information
❑ CHECK IF HQW OR ORW WQS
Facility Name
Greenville WTP
W WTP/WTP Class
PC-1
NPDES Permit
NCO082139
Outfall
001
Flow, Ow (MGD)
0.800
Receiving Stream
Tar River
Stream Class
C; NSW
7Q1 Os (cfs)
0.00
7Q10w (cfs)
0.00
30Q2 (cfs)
0.00 _
QA (cfs)
0.00
1 Q10s (cfs)
0.00
Data Source(s)
❑ CHECK TO APPLY MODEL
Follow directions. for data entry. In some cases a
comment menu list the available choices or a
dropdown menu will provide a list you may select
from. Error message occur if data entry does not
meet input criteria.
Par01
Par02
Par03
Par04
Par05
Par06
Par07
Par08
Pure
ParIC
Par11
Par12
Par13
Par14
Par15
Paris
Par17
Par18
Par19
Pa2O
Par21
Pa22
Table 2. Parameters of Concern
Name Type Chronic Modifier Acute
h
O
W
a
PQL Units g
NCO082139 9595 FRESHWATER RPA2014_22, input
2/11/2015

IWC Calculations
Facility: Greenville WTP
NC0082139
Prepared By: Derek Denard
Enter Design Flow (MGD): 0.8
Enter s7Q10 (cfs): 0
Enter w7Q10 (cfs): 0
Total Residual Chlorine (TRC)
Daily Maximum Limit (ug/1)
Ammonia (Summer)
Monthly Average Limit (mg NH3-N/1)
s7Q10 (CFS)
0
s7Q10 (CFS)
0
DESIGN FLOW (MGD)
0.8
DESIGN FLOW (MGD)
0.8
DESIGN FLOW (CFS)
1.24
DESIGN FLOW (CFS)
1.24
STREAM STD (UG/L)
17.0
STREAM STD (MG/L)
1.0
Upstream Bkgd (ug/1)
0
Upstream Bkgd (mg/1)
0.22
IWC (%)
100.00
IWC (%)
100.00
Allowable Conc. (ug/1)
17
Allowable Conc. (mg/1)
1.0
Ammonia (Winter)
Monthly Average Limit (mg NH3-N/1)
Fecal Coliform
w7Q10 (CFS)
0
Monthly Average Limit:
20011ooml DESIGN FLOW (MGD)
0.8
(If DF >331; Monitor)
DESIGN FLOW (CFS)
1.24
(If DF<331; Limit)
STREAM STD (MG/L)
1.8
Dilution Factor (DF)
1.00 Upstream Bkgd (mg/1)
0.22
IWC (%)
100.00
Allowable Conc. (mg/1)
1.8
Total Residual Chlorine
1. Cap Daily Max limit at 28 ug/I to protect for acute toxicity
Ammonia (as NH3-N)
1. If Allowable Conc > 35 mg/I, Monitor Only
2. Monthly Avg limit x 3 = Weekly Avg limit (Municipals); capped at 35 mg/I
3. Monthly Avg limit x 5 = Daily Max limit (Non-Munis); capped at 35 mg/I
4. BAT for Minor Domestics: 2 mg/I (summer) and 4 mg/I (winter)
5. BAT for Major Municipals: 1 mg/I (year-round)
Fecal Coliform
1. Monthly Avg limit x 2 = 400/100 ml = Weekly Avg limit (Municipals) = Daily Max limit (Non -Muni)
NPDES Server/Current Versions/WLA; TB 1/16/2009

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NRCAN, GeoBase, IGN, Kadaster NL, Ordnance Survey, Esn Japan;-METI, Esri China (Hong Konc). -

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Permit Reviewer Notes - Derek Denard
Permit Number:
Applicant/Facility Name: _
G�"CPtiv,�p �✓ l�
Permit Status:
Regional Office:
Latitude:
7�• 3�,o'i
Longitude:
� ��. z3, ss�
Facility Class: r2C /
County: y�
J
Outfall: 001
Flow:
Applicant Address: P
Facility Address: 'y /l, y�
o'
Type of Waste:
Stream Notes
Receiving Stream:
�tiv I�IJCt-
Stream Segment:
Stream Classification:
Drainage Basin:
75
Summer &QZO (cfs):
Subbasin: i57-�
Winter 7Q10(cfs):
HUC Code: O 3 O 2
30Q2 (cfs): _
State Grid: C
ft
Average Flow (cfs):
USGS Topo Qua r , /
L /N
IWC (%): �y
303 (d):
Nb
Use:
Dates
Fe 4

SOC PRIORITY PROJECT: No
To: Water Quality Permitting Section
Wastewater Branch, NPDES Permitting
Attention: Joe Corporon
Date: September 19, 2014
NPDES STAFF REPORT AND RECOMMENDATIONS
County: Pitt
NPDES Permit No.: NCO082139
PART I - GENERAL INFORMATION
1. Facility and address: Greenville Utilities Commission (GUC) WTP
PO Box 1847 RECEIVED/DENR/DWR
Greenville, NC 27834
2. Date of investigation: June 17, 2014 S E P 2 3 2014
Water Qua !'��yy
3. Report prepared by: Scott Vinson, Environmental Engineer
Permitting Section
4. Person contacted and telephone number: Mr. Julius Patrick, ORC
[phone]
5. Directions to site: The facility is located off Old River Road at 1721 Waterway Rd.,
Greenville, in Pitt County, North Carolina.
6. Discharge point(s), list for all discharge points:
Outfall 001
Latitude: 350 38' 04" N
Longitude: 770 23' 55" W
Attach a USGS Map Extract. (attached)
USGS Quad map: Greenville NW, NC
7. Receiving stream or affected surface waters: Tar River
a. Classification and Stream Index No.: C; NSW, 28-(94)
b. River Basin and Subbasin No.: Tar -Pamlico, 03-03-05
C. Describe receiving stream features and pertinent downstream uses: At the outfall,
the Tar River is classified and used for secondary recreation such as boating, jet
skiing and other uses involving human body contact, aquatic life including
propagation and for the use of fishing to include fish consumption. (Please note
that BIMS has the Outfall incorrectly classified as WS-f V which is just
upstream from the discharge point and is Greenville's raw water supply
intake. The receiving stream in BIMS needs to be corrected to Index 28-
(94).)

Page Two
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
a. Volume of wastewater: Daily average flow over the past year is approximately
0.489 MGD.
b. What is the current permitted capacity: 1.2 MDG
C. Actual treatment capacity of current facility (current design capacity): 1.2 MGD
d. Description of existing or substantially constructed WT facilities:
Wastewater discharged results from the filter backwash and
settling lagoon decant wastewater.
e. Description of proposed WT facilities: None proposed.
f. Possible toxic impacts to surface waters: GUC WTP poses no apparent toxic
impacts to surface waters.
PART III - OTHER PERTINENT INFORMATION
Special monitoring or limitations (including toxicity) requests: None.
Compliance: The facility is in compliance with the permit. See last inspection report
attached conducted on April 29, 2014. RECEIVEDZENRIDINR
SEP 2 3 2014
PART IV - EVALUATION AND RECOMMENDATIONS Water Quaury
Permitting Section
Greenville Utilities Commission WTP is operating within it's permit conditions and limits.
Greenville Utilities Commission has requested the renewal of Permit No. NCO082139 and the
Washington Regional Office recommends renewing the permit.
Signature of Report Date
Water Quality Regional Sup rvisor ate

Greenville
Utilities
October 14, 2013
Mrs. Valery Stephens
NC DENR, Division of Water Quality
Point Source Branch
1617 Mail Service Center
Raleigh, NC 27699-1617
RE: Renewal Application of NPDES Permit NCO082139
Greenville Utilities Commission, Pitt County
Dear Mrs. Stephens:
By way of this submittal the Greenville Utilities Commission is requesting renewal of the
subject permit.
Enclosed please find an original and (2) copies of the NPDES permit application
(short form C-WTP), a schematic of flow through the facility and the sludge management
plan for this facility.
If you have any questions or need additional information, please contact Julius Patrick at
[phone].
Sincerely,
Randall D. Emory, P.E.
Director of Water Reso es
RDE/jh
Enclosures
cc: Mr. Anthony C. Cannon, General Manager/CEO
Mr. D. Anthony Whitehead, Water Quality Manager
PO Box 1847 Mr. Julius E. Patrick, Superintendent, Water Treatment Plant
Greenville, NC
27835.1847
252 752-7166
www.guc.com
Your Local
Advantage

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62-MG Presettling Ozone
Tar River Reservoir Contactor
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I I AN Environmental Consultants
Greenville Utilities Commission, Greenville, North Carolina

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Memorandum
To: Rick Langley
From: Bill Dowbiggin
Date: April 28, 2004
Subject: Alum Residuals Management Plan
Camp Dresser and McKee (CDM) is pleased to provide this technical memorandum
illustrating the updated residuals management calculations for lagoon life for the Greenville
Utilities Commission Water Treatment Plant (GUC-WTP) sludge lagoon. The results of these
calculations are summarized below.
Evaluation
The Residuals Pond Volumetric Survey conducted by Spruill & Associates Inc. in March 2001
illustrates the following points.
■ The lagoon was 55.4% full to the "low" freeboard line.
■ The total capacity of the lagoon to the "low" freeboard line was approximately 75 million
gallons (mg). The water surface elevation on March 3, 2001 is defined as the "low"
freeboard line.
■ Approximately 42 million gallons of sludge had accumulated in the lagoon at that time and
the remaining lagoon free capacity to "low" freeboard line was approximately 34 million
gallons.
The following evaluation conservatively assumes all of the aluminum in the polyalun- num
chloride precipitates as aluminum hydroxide.

• f
f
Ricky Langley
04/28/04
Page 2
On the basis of the following equation, the estimated residual quantities under several flow
scenarios are summarized in Table 1.
where,
5=8.34*Q(4.9C+SS+A+1.9Fe+1.58Mn)
S = sludge produced (lb/ day)
Q = plant flow (mgd)
C = coagulant dose, (mg/ L as Al) = 3.5 mg/ L (which is equivalent to 16.8 mg/1
of 4.9 lb/ gal PACI as reported)
SS = raw water suspended solids (mg/L) = b * Tu
b = correlation factor assumed to be 2.0
Tu = raw water turbidity (ntu)
A = additional chemicals added (mg/L) - in the case, polymer plus TOC
removed in mg/ L
Fe = raw water iron concentration (mg/L)
Mn = raw water manganese concentration (mg/L)
Assuming that the sludge in the lagoon will eventually thicken to an average solids
concentration of 8 %, Table 1 shows that the lagoons will not be full for the 10 year planning
horizon. The remaining capacity in 2001 was 34 million gallons and the estimated additional
sludge accumulation at the end of 2014 is about 21 million gallons. If the sludge consolidates
beyond 8 %, more can be accumulated. Samples show that thicker sludge is achieved thus far
in the lagoon. The 2001 results showing percent solids in the sludge samples, taken at three
different locations and tested by GUC ranged from 7.4% to 32.3%.

Ricky Langley
04/ 28/ 04
Page 3
Table 1: Summary of Residual Quantities
8% Solids
Average
Water
Demand
Total
Solids
(lbs/day)
Total
Solids
Sludge
Volume
Yearly
Sludge
Volume
Total
Sludge
Accumulation
Year
(MGD)
( dry
tons/day)
(gpd)
(MG)
(MG)
1.59
4578
1.67
1.67
2001
10.5
3182
1.52
4360
1.59
3.26
2002
10
3031
1.52
4360
1.59
4.85
2003
10
3031
1.56
4490
1.64
6.49
2004
10.3
3122
2005
10.6
3213
1.61
4621
1.69
8.18
1.65
4752
1.73
9.91
2006
10.9
3304
1.70
4883
1.78
11.70
2007
11.2
3394
1.74
5014
1.83
13.53
2008
11.5
3485
1.79
5144
1.88
15.40
2009
11.8
3576
1.83
5275
1.93
17.33
2010
12.1
3667
1.88
5406
1.97
19.30
2011
12.4
3758
1.92
5537
2.02
17.42
2012
12.7
3849
1.97
5667
2.07
19.40
2013
13
3940
2.02
5798
2.12
21.42
2014
[13.3
T- 4031
-1
where,
C=3.5mg/ LasAl
Tu = 9 NTU
SS =18 mg/L
A = 4 mg/L
Fe = 0.075 mg/ L
Mn = 0.03 mg/L