NC0023931_PERMIT ISSUANCE_20100510

NPDES DOCUMENT SCANNING COVER SHEET
NPDES Permit:
NC0023931
Greenville (GUC) WWTP
Document Type:
`Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Correspondence
Instream Assessment (67b)
Environmental Assessment (EA)
Permit
History
Document Date:
May 10, 2010
This document is printed on reuse paper - ignore any
coateazt on the reverse Bide

MIK
*A
NC®ENR
North Carolina Department of Environment and Natural Resources
Beverly Eaves Perdue
Governor
Mr. Daniel H. Tracy, Superintendent
Greenville Utilities Commission
PO Box 1847
Greenville, NC 27834
Dear Mr. Tracy:
Division of Water Quality
Coleen H. Sullins Dee Freeman
Director I Secretary
May 10, 2010
Subject: Issuance of NPDES Permit NCO023931
Greenville Utilities Commission WWTP
Pitt County
The Division of Water Quality (Division) personnel have reviewed and approved your application for
renewal of the subject permit. Accordingly, we are forwarding the attached NPDES discharge permit. It is
issued pursuant to the requirements of North Carolina General Statute 143-215.1 and the Memorandum of
Agreement between North Carolina and the U.S. Environmental Protection Agency dated October 15,
2007, or as subsequently amended.
This final permit includes no major changes from the draft permit sent to you on March 3, 2010. At your
request, the reference to the oil and grease collection trough was deleted from the facility description. All
the changes previously made in the draft permit are retained, as follows:
• Replaced the aerated grit removal system with the new centrifugal grit removal system.
• Eliminated monitoring for silver, due to no detection within this permit period
• Added the special condition for nutrient reduction, as a member of the Tar -Pamlico Association
• Deleted special condition A (5) for EPA Method 624.
• Added TKN and Nitrite -Nitrate monthly composite sampling, as per strategy for Association -member
renewals in the Tar -Pamlico basin.
• Specified Method 1631-E for mercury testing for annual priority pollutant analysis, rather than Method
245.1.
If any parts, measurement frequencies, or sampling requirements contained in this permit are
unacceptable, you have the right to an adjudicatory hearing upon written request within thirty (30) days
after receiving this letter. Your request must take the form of a written petition conforming to Chapter 150E
of the North Carolina General Statutes, and must be filed•with.the Office of Administrative Hearings, 6714
Mail Service Center, Raleigh, North Carolina 27699-6714. Unless such demand is made, this permit
remains final and binding.
1617 Mail Service Center. Raleigh, North Carolina 27699-1617
Location: 512 N. Salisbury St. Raleigh, North Carolina 27604
Phone: [phone] \ FAX: [phone]'t Customer Service. 1 877 623-6748
Internet. www.ncwiterqualily.org „
011c
North Carol i na
An Equal Opportunity 1 Alhrmatrve Action Employer

This permit is not transferable except after notifying the Division of Water Quality. The Division may modify
and reissue, or revoke this permit. Please notice that this permit does not affect your legal obligation to
obtain other permits required by the Division of Water Quality, the Division of Land Resources, the Coastal
Area Management Act, or other federal or local governments.
If you have questions, or if we can be of further service, please contact Mr. Gil Vinzani at
[[e-mail] or call [phone].
/J Coleen H. Sullins
/
Enclosure: NPDES Permit FINAL NCO023931
cc: Washington Regional Office/Surface Water Protection Section
NPDES Permit Files
Central Files
Aquatic Toxicology Unit, Susan Meadows (E-mail copy)
EPA Region 4, Marshall Hyatt (permit and fact sheet, E-mail copy)
1617 Mail Service Center, Ralegh. North Carolina 21699-1617
Location: 512 N, Salisbury St. Raleigh, North Carolina 27604 One
Phone: [phone] FAX: [phone] Customer Service: 1 877-623-6748 North Caro( t na
Internet: www.ncwaterquglity.org _ !�/1Y/l!-� �1ry� malty
An Equal Opportunity l Allirmalive ACUan Employer -

Permit No. NC0023931
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended, the
Greenville Utilities Commission
is hereby authorized to discharge wastewater from a facility located at the
Greenville Utilities Commission WWTP
240 Aqua Lane
Greenville
Pitt County
to receiving waters designated as the Tar River in the Tar -Pamlico 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 June 1, 2010.
This permit and authorization to discharge shall expire at midnight on October 31, 2014.
Signed this day May 10, 2010.
Col en H. Sulli6s, Director
vision of Water Quality
By Authority of the Environmental Management Commission

Permit.No. NC0023931
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are
hereby revoked. As of this permit issuance, any previously issued permit bearing this number.
is no longer effective. Therefore, the exclusive authority to operate and discharge from this
facility arises under the permit conditions, requirements, terms, and provisions included
herein.
Greenville Utilities Commission
is hereby authorized to:
1. Continue to operate an existing 17.5 MGD wastewater treatment facility located at 240
Aqua Lane, Greenville, Pitt County, and consisting of:
Solids screening
• Centrifugal grit removal
Influent flow measurement with Parshall flume and ultrasonic transducer,
Dual diffused aeration basins — one using diffused aeration and the other using
diffused air aeration basins with anoxic/aerobic zones (operating for biological
nutrient removal)
• Dual secondary clarifiers
Post aeration unit
Deep bed sand filters
• Ultraviolet disinfection
Sludge thickening
Sludge holding tanks
• Belt filter press
Sludge drying beds
• Emergency power generators
2. Discharge from said treatment works, through outfall 001 (via an effluent channel), into
the Tar River, a Class C-NSW water in the Tar -Pamlico River Basin, at the location
specified on the attached map.

Y
YeR
SheMOO& pS
A.
k
f-I
.K - ir,
V
le,
Greenville Utilities Commission Facility Location`
11 01R.. V.,
StateGrid/Ouad: E29SE/GreenvilleNE Latitude: 35' 35' 56" N not to scale
8-Digit Ituc: 03020103 Longitude: 77' 19'06" W
Receiving Stream: Tar River Drainage Basin: Tar -Pamlico River NPDES Stream Class: C-NSW Basin: 03-03-05 Permit No. NCO023931
I � �N Pitt County

.. . ,Permit No. NC00239,31
A (1) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
Beginning on the effective date of this permit and lasting permit expiration, the Permittee is
authorized to discharge treated wastewater from Outfall 001. Such discharges shall be'limited
and monitored by the Permittee as specified below:
PARAMETER
EFFLUENT LIMITATIONS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measuremen
t Frequency
Sample
Type
Sample
Location 1
Flow (MGD)
17.5
Continuous
Recording
I or E
)20°C (Summerr)2,3
(Summ
8.0 mg/L
12.0 mg/L
Daily
Composite
I, E
CBOD, 5-day, 20°C
(Winter)
15.0 mg/L
22.5 mg/L
Daily
Composite
I, E
Total Suspended SolidSZ
30.0 mg/L
45.0 mg/L
Daily
Composite
1, E
NH3 as N (Summer) 3
4.1 mg/L
12.3 mg/L
Daily
Composite
E
NH3 as N (Winter)3
8.2 mg/L
24.6 mg/L
Daily
Composite
E
Dissolved Oxygen
Daily average not less than 5.0 mg/L
Daily
Grab
E
Fecal Coliform
200/100 ml
400/100 ml
Daily
Grab
E
Temperature
Daily
Grab
E
Total Phosphorus °
Monitor and Report (mg/L)
Weekly
Composite
E
Total Nitrogen
NO +NO3+TKN °
Monitor and Report (mg/L)
Weekly
(Calculated)
E
K'eldahl Nitrogen TKN4
Monitor and Report m /L
Weekly
Composite
E
Nitrite/Nitrate Nitrogen 4
NO-N+NO3-N
Monitor and Report (mg/L)
Weekly
Composite
E
pH
Between 6.0 and 9.0 Standard Units
Daily
Grab
E
Conductivity
Daily
Grab
E
Total Copper
2/Month
Composite
E
Total Zinc
2/Month
Composite
E
Chronic Toxicity,
Quarterly
Composite
E
Footnotes:
1. I: Influent. E: Effluent, See conditions A (2) and A (3) of this permit for instream monitoring
requirements.
2. The monthly average.CBOD5 and Total Suspended Solids concentrations shall not exceed 15% of
the respective influent value (85% removal).
3. Summer shall be defined as April 1 — October 31 with winter defined as the balance of the year.
4. See condition A (4) for nutrient reduction special condition.
5. Chronic Toxicity (Ceriodaphnia), @ 20%, March, June, September, and December; see. special
condition A (5) of this permit.
THERE SHALL BE NO DISCHARGE OF FLOATING SOLIDS OR FOAM.

Permit No. NC0023931
A (2) INSTREAM MONITORING REQUIREMENTS
Instream monitoring is required for the following parameters at the locations specified:
Effluent Characteristics
Measurement Frequency
Sample Type
Sample
Locationl
Fecal Coliform
June -Sept
Weekly
Grab
U, D
October -May
Monthly
Dissolved Oxygen
June -Sept
Weekly
Grab
U, D
October -May
Monthly
Temperature
June -Sept
Weekly
Grab
U, D
October -May
Monthly
Conductivity
June -Sept
Weekly
Grab
U, D
October -May
Monthly
Footnotes:
1. U - Upstream 500 feet above the mouth of Barber Creek, D - Downstream at Yankee Hall.
A (3) STREAM SAMPLING
If the instream dissolved oxygen concentration falls to 5.5 mg/L or less, a synoptic sampling
run will be required for that day of monitoring. When triggered by the DO threshold, the
synoptic sampling run should be carried out at the following sites on the Tar River main stem:
• At the mouth of the Moyes Run
• At Yankee Hall
• 200 feet upstream of the mouth of Grindle Creek
• At Grimesland Bridge
• At the mouth of the unnamed embayment on the north bank of the river approximately
two miles downstream of Grimesland Bridge.
At each site during the synoptic run, sampling shall be done for temperature, dissolved
oxygen and conductivity. All samples must be collected at midstream at a depth of about 0.1
meters. Samples at the upstream site (500 feet above the mouth of Barber Creek) and at
Yankee Hall shall be done at a frequency of once per week during the months of June through
September when triggered by the low DO threshold.
In addition, whenever sampling runs are triggered, chlorophyll a must be monitored at the
'upstream site, at Yankee Hall and at Grimesland Bridge.
During the months of October through May, instream monitoring need only be performed
monthly, and may be done upstream at Town Commons Park and downstream at Grimesland
Bridge so as not to necessitate putting a boat in the river. Samples should be collected by the
same methods and for the same parameters as those required during the stipulated summer
period, with the exception of chlorophyll -a.

Permit No. NCO023931
Since stream sampling is currently done by the Tar -Pamlico Basin Association, the instream
monitoring requirements as stated in A (2) and A (3) are waived. Should your membership in
the Association be terminated, you shall notify the Division immediately and the instream
monitoring requirements specified in this permit shall be reinstated.
A (4) NUTRIENT REDUCTION
(1) Point source dischargers in the Tar -Pamlico River Basin are subject to the terms and
conditions of the Tar -Pamlico Nutrient Sensitive Waters Implementation Strategy: Phase
1// (the "Agreement'), agreed to on April 14, 2005; and the nutrient TMDL for the Basin,
approved by the USEPA on August 10, 1995.
(2) The Permittee is a member of the Tar -Pamlico Basin Association, which consists of the
following fifteen facilities:
Membership of Tar -Pamlico Basin Association
Permit
Owner
Facility
NC0030317
City of Rocky Mount
Tar River Regional WWTP
NC0023931
Greenville Utilities Commission
GUC WWTP
NC0020605
Town of Tarboro
Tarboro WWTP
NC0025054
City of Oxford
Oxford WWTP
NC0020648
City of Washington
Washington WWTP
NC0069311
Franklin County
Franklin County WWTP
NC0020834
Town of Warrenton
Warrenton WWTP
NC0026042
Town of Robersonville
Robersonville WWTP
NC0020231
Town of Louisburg
Louisburg WWTP
NC0026492
Town of Belhaven
Belhaven WWTP
NC0025402
Town of Enfield
Enfield WWTP
NC0023337
Town of S66tland Neck
Scotland NeckWWTP
NC0020061
Town of Spring Hope
Spring Hope WWTP
NC0020435
Town of Pinetops
Pinetops WWTP
NC0042269
Town of Bunn
Bunn WWTP
(3) The Agreement defines nitrogen and phosphorus caps for the Association as follows:
Phase III Nutrient Caps —Tar-Pamlico Basin Association'
Total Nitrogen
Total Phosphorus
(lb/yr)
(kg/yr)
(lb/yr)
(kg/yr)
..891,272
,404,274..
161.,07.0,
73,060 ..
1) Includes allowed adjustment to the 1991 baseline
The Agreement also specifies that the Association has properly accrued and banked
nitrogen offset credits in the following amounts:

Permit No. NC0023931
Nitrogen Offset Credits — Tar -Pamlico Basin Association
Nitrogen Credits
Timeframe
(lb)
(kg)
Phase 1
10,138
4,608
Phase II
30,276
13,762
Phase III
10,564
4,802
(4) Consistent with TMDL requirements of 40 C.F.R. 122.44(d)(1), 122.44(d)(1)(vii)(A) and
(B), and Section 301(b)(1)(C) of the federal Clean Water Act, the Phase III nutrient caps
and applied credits are hereby incorporated into this permit as enforceable limitations on
the aggregate discharge of nitrogen and phosphorus by the Association, as follows:
Nutrient Load Limits — Tar -Pamlico Basin Association
Total Nitrogen
Total Phosphorus
(lb/yr)
(kg/yr)
(Ib/yr)
(kg/yr)
Nutrient Caps
891,272
404,274
161,070
73,060
Applied Credits
0
0
N/A
N/A
Effective Load Limits
891,272
404,274
161,070
73,060
(5) In accordance with the terms and conditions of the Phase III Agreement, the Association
may apply additional nitrogen offset credits in anticipation of future exceedances.
Application of credits shall be made through modification of the members' NPDES
permits.
(6) The Division reserves the right to reopen this permit and make appropriate modifications
in the event that:
a. The current Agreement is revised to add or modify the nutrient caps, reporting
requirements, or other requirements relevant to this permit.
b. The terms of the Agreement are violated, in which case the Division will implement
the strategy in Section X. of the Agreement, Violation of Terms of this Agreement.
c. The Director determines that additional requirements, including effluent limitations,
are necessary to prevent localized adverse impacts to water quality.
(7) No later than March 1 of each year, the Association shall prepare an annual report of its
performance for the previous calendar year to the Division at the following address:
Division of Water Quality, Point Source Branch
Attn: Tar -Pamlico NPDES Coordinator
1617 Mail Service Center
Raleigh, NC 27699-1617
The report shall include each member's monthly mass loadings and the Association's
aggregate annual loadings for Total Nitrogen and Total Phosphorus for the subject
calendar year.

Permit No. NC0023931
A (5) CHRONIC TOXICITY PERMIT LIMIT (QUARTERLY)
The effluent discharge shall at no time exhibit observable inhibition of reproduction or
significant mortality to Ceriodaphnia dubia at an effluent concentration of 20 %.
The permit holder shall perform at a minimum, ug arterly monitoring using test procedures
outlined in the "North Carolina Ceriodaphnia Chronic Effluent Bioassay Procedure," Revised
February 1998, or subsequent versions or "North Carolina Phase II Chronic Whole Effluent
Toxicity Test Procedure" (Revised -February 1998) or subsequent versions. The tests will be
performed during the months of March, June, September and December. Effluent sampling
for this testing shall be performed at the NPDES permitted final effluent discharge below all
treatment processes.
If the test procedure performed as the first test of any single quarter results in a failure or ChV
below the permit limit, then multiple -concentration testing shall be performed at a minimum, in
each of the two following months as described in "North Carolina Phase II Chronic Whole
Effluent Toxicity Test Procedure" (Revised -February 1998) or subsequent versions.
The chronic value for multiple concentration tests will be determined using the geometric
mean of the highest concentration having no detectable impairment of reproduction or survival
and the lowest concentration that does have a detectable impairment of reproduction or
survival. The definition of "detectable impairment," collection methods, exposure regimes, and
further statistical methods are specified in the "North Carolina Phase II Chronic Whole Effluent
Toxicity Test Procedure" (Revised -February 1998) or subsequent versions.
All toxicity testing results required as part of this permit condition will be entered on the
Effluent Discharge Monitoring Form (MR-1) for the months in which tests were performed,
using the parameter code TGP3B for the pass/fail results and THP36 for the Chronic Value.
Additionally, DWQ Form AT-3 (original) is to be sent to the following address:
Attention: NC DENR / DWQ / Environmental Sciences Section
1621 Mail Service Center
Raleigh, North Carolina 27699-1621
Completed Aquatic Toxicity Test Forms shall be filed with the Environmental Sciences Section
no later than 30 days after the end of the reporting period for which the report is made.
Test data shall be complete, accurate, include all supporting chemical/physical measurements
and all concentration/response data, and be certified by laboratory supervisor and ORC or
approved designate signature. Total residual chlorine of the effluent toxicity sample must be
measured and reported if chlorine is employed for disinfection of the waste stream.
Should there be no discharge of flow from the facility during a month in which toxicity
monitoring is required, the permittee will complete the information located at the top of the
aquatic toxicity (AT) test form indicating the facility name, permit number, pipe number,
county, and the month/year of the report with the notation of "No Flow" in the comment area of
the form. The rdpdrt shall be submitted to the Ervronmental Scierces'Section at the address
cited above.
Should the permittee fail to monitor during a month in which toxicity monitoring is required,
monitoring will be required during the following month.

Permit No. NC0023931
Should any test data from this monitoring requirement or tests performed by the North
Carolina Division of Water Quality indicate potential impacts to the receiving stream, this
permit may be re -opened and modified to include alternate monitoring requirements or limits.
NOTE: Failure to achieve test conditions as specified in the cited document, such as
minimum control organism survival, minimum control organism reproduction, and appropriate
environmental controls, shall constitute an invalid test and will require immediate follow-up
testing to be completed no later than the last day of the month following the month of the initial
monitoring.
A (6) EFFLUENT POLLUTANT SCAN
The permittee shall perform an annual Effluent Pollutant Scan for all parameters listed in the
table below (in accordance with 40 CFR Part 136). The annual effluent pollutant scan samples
shall represent seasonal (summer, winter, fall, spring) variations over the 5-year permit cycle.
Unless otherwise indicated, metals shall be analyzed as 'total recoverable." Additionally, the
method detection level and the minimum level shall be the most sensitive as provided by the
appropriate analytical procedure.

Permit No. NC0023931
Ammonia (as N)
Chlorine (total residual, TRC)
Dissolved oxygen
Nitrate/Nitrite
Total Kjeldahl nitrogen
Oil and grease
Total Phosphorus
Total dissolved solids
Hardness
Antimony
Arsenic
Beryllium
Cadmium
Chromium
Copper
Lead
Mercury (Method 1631 E)
Nickel
Selenium
Silver
Thallium
Zinc
Cyanide
Total phenolic compounds
Volatile organic compounds:
Acrolein
Acrylonitrile
Benzene
Bromoform
Carbon tetrachloride
Chlorobenzene
Chlorodibromomethane
Chloroethane
2-chloroethylvinyl ether
Chloroform
Dichlorobromomethane
1,1-dichloroethane
1,2-dichloroethane
Trans- l,2-dichloroethylene
1, 1 -dichloroethylene
1,2-dichloropropane
1,3-dichloropropylene
Ethylbenzene
Methyl bromide
Methyl chloride
Methylene chloride
1,1,2,2-tetrachloroethane
Tetrachloroethylene
Toluene
1,1,1-trichloroethane
1,1,2-trichloroethane
Trichloroethylene
Vinyl chloride
Acid -extractable compounds:
P-chloro-m-cresol
2-chlorophenol
2,4-dichlorophenol
2,4-dimethylphenol
4,6-dinitro-o-cresol
2,4-dinitrophenol
2-nitrophenol
4-nitrophenol
Pentachlorophenol
Phenol
2,4,6-trichlorophenol
Base -neutral compounds:
Acenaphthene
Acenaphthylene
Anthracene
Benzidine
Benzo(a)anthracene
Benzo(a)pyrene
3,4 benzofluoranthene
Benzo(ghi)perylene
Benzo(k)fluoranthene
Bis (2-chloroethoxy)
methane
Bis (2-chloroethyl) ether
Bis (2-chloroisopropyl) ether
Bis (2-ethylhexyl) phthalate
4-bromophenyl phenyl ether
Butyl benzyl phthalate
2-chloronaphthalene
4-chlorophenyl phenyl ether
Chrysene
Di-n-butyl phthalate
Di-n-octyl phthalate
Dibenzo(a,h)anthracene
1,2-dichlorobenzene
1,3-dichlorobenzene
1,4-dichlorobenzene
3,3-dichlorobenzidine
Diethyl phthalate
Dimethyl phthalate
2,4-dinitrotoluene
2,6-dinitrotoluene
1,2-diphenylhydrazine
Fluoranthene
Fluorene
Hexachlorobenzene
Hexachlorobutadiene
Hexachlorocyclo-pentadiene
Hexachloroethane
Indeno(1,2,3-cd)pyrene
Isophorone
Naphthalene
Nitrobenzene
N-nitrosodi-n-propylamine
N-nitrosodimethylamine
N-nitrosodiphenylamine
Phenanthrene
Pyrene
1,2,4-tichlorobenzene
Test results shall be reported to the Division in DWQ Form- DMR-PPA1 or in a form approved.,.
by the Director, within 90 days of sampling. A copy of the report shall be submitted to Central
Files to the following address: Division of Water Quality, Water Quality Section, 1617 Mail
Service Center, Raleigh, North Carolina 27699-1617. This submittal must also be included
with the next permit renewal application form.

DENR/DWQ
FACT SHEET FOR NPDES PERMIT DEVELOPMENT
NPDES No. NC0023931
Facility Information
Applicant/Facility Name:
Greenville Utilities Commission - GUC
Applicant Address:
P. O. Box 1847, Greenville, North Carolina 27835
Facility Address:
240 Aqua Lane, Greenville, North Carolina 27834
Permitted Flow (MGD):
17.5 MGD
Type of Waste:
80 % Domestic, 20 % Industrial
Facility Classification:
IV
Permit Status:
Renewal
County:
Pitt
Miscellaneous
Receiving Stream:
Tar River
Regional Office:
WaRO
Stream Classification:
C NSW
State Grid / USGS Quad:
F29SE/GreenvilleSE
303(d) Listed?
No
Permit Writer:
Gil Vinzani
Basin/Subbasin:
Tar Pamlico / 03-03-05
Date:
7/29/09 and 2/23/10
Drainage Area (mi):
2660
s5.,
Lat. 35035' 56" N Long. 770 18' 06" W
Summer 7010 (cfs)
109
Winter 7Q1 0 (cfs):
258
8-Digit HUC
03020103
Average Flow (cfs):
3140
IWC (%):
20
Summary: The Greenville Utilities Commission (GUC) submitted a permit renewal application on
April 30, 2009. They operate a 17.5 MGD facility consisting of solids screening, centrifugal grit
removal, oil & grease collection, dual train activated sludge, dual diffused aeration basins — one
using diffused aeration and the other using diffused air aeration basins with anoxic/aerobic zones
for biological nutrient removal, dual secondary clarifiers, post aeration unit, deep bed sand filters,
UV disinfection, sludge thickening, aerated sludge holding tanks, a belt filter press, and sludge
drying beds. GUC is a member of the Tar -Pamlico River Basin Association, and joined the
Association's monitoring coalition in February of 2007.
Pretreatment: Greenville has an active pre-treatment program with 2 SIUs and 4 CIUs. The total
pre-treatment permitted flow is 3.634 MGD. The largest discharger is DSM Pharmaceuticals, a 0.5
MGD manufacturer of pharmaceuticals and synthetic fibers..
Basin Plan: The segment of the Tar River at the site of the outfall remains impaired in the fish
consumption category. Mercury is a statewide issue.
Monitoring Data Review:
DMR - DMRs were reviewed for the period of December 2005 to May 2009. The following table
summarizes select data with historical averages:
Fact Sheet
NPDES NC0023931

Parameter
2000-2004
2006
2007
2008
2009
Flow MGD
9.29
10.54
9.41
9.01
9.35
COD m /L
2.28
TN m /L
7.7
3.92
3.67
3.92
4.02
TP m /L
0.89
1.92
2.09
2.16
1.75
• over 93% of all reported COD values are less that 2.0 mg/L
Instream sampling — The existing permit had a special condition for sampling at several locations in
the river when the instream DO falls below 5.5 mg/L. This synoptic sampling is done at four
separate locations, in addition to the standard upstream/downstream sampling. Presently, GUC is
relieved of this sampling, due to membership in the coalition. The permit will note that this
monitoring must be resumed if the permittee is no longer a coalition member.
Effluent Toxicity - The permit requires a Quarterly Chronic Toxicity test at a 20% concentration.
There were no reported test failures during this period (2005-the present).
Reasonable Potential Analysis:
The results are shown below:
Chronic
Acute
allowable
allowable
Parameter
concentration
concentration
Comments/Changes to permit
(Ng/L)
(Ng/L)
Cadmium
2
15
No RP
Chromium
50
No RP
Copper
7
35
Reasonable potential to exceed the action
level. Continue monitoring twice per month.
Cyanide
25
22
No RP
Mercury
0.012
No RP
Nickel
261
88
No RP
Selenium
25
56
All results less than detect. Delete special
condition A (6)
Silver
0.3
1
All DMR results less than detect. Eliminate
monitoring requirement
Zinc
251
67
Reasonable potential to exceed the action
level. Continue monitoring twice per month.
In addition, there was one hit on the Priority Pollutant Analysis (PPA) for Bis (2-ethylhexyl)
phthalate. Data analysis showed that the sample reading of 0.015 mg/L did not cause a reasonable
potential to exceed the human health standard.
Fact Sheet
NPDES NC0023931

Revised Draft Special Condition and Fact Sheet Language
for Tar -Pamlico Association Members' NPDES Permits
Nutrient Controls
History and Status of Nutrient Management Strategv for Point Sources
On September 12, 1989, the Environmental Managements Commission classified the Tar -Pamlico
River Basin as Nutrient Sensitive Waters (NSW). On February 13, 1992, the Commission approved
a revised NSW Implementation Strategy that established the framework for a nutrient reduction
trading program between point and nonpoint sources of pollution. The Strategy also established
certain conditions to be met by an association of dischargers known as the Tar -Pamlico Basin
Association (the Association). Those conditions are defined in the Tar -Pamlico Nutrient Sensitive
Waters Implementation Strategy (the "Agreement").
The Association agreed to meet specific conditions in order to have the opportunity both to pursue
alternative approaches to managing its nutrient discharges and to reduce nutrient loading in the
most cost-effective manner, including the option to fund agricultural best management practices
(BMPs). These conditions included the development of an estuarine hydrodynamic computer
model, engineering evaluations of wastewater treatment plants, annual monitoring reports on
nutrient loading, and minimum payments for the administration and implementation of agricultural
BMPs. The Association met all conditions established in Phase I.
The Phase I Agreement set collective, technology -based discharge loading limits for the
Association in the form of an annually decreasing, combined nitrogen and phosphorus cap. During
the 1990 to 1991 period, low cost operational changes were implemented at several facilities to
reduce nitrogen loadings. The engineering evaluation of member facilities and implementation of
the study's recommended nutrient removal improvements also yielded significant loading
reductions. These changes, combined with installation of nutrient removal at several of the larger
facilities, allowed the Association to reduce its nutrient loads and stay beneath its caps throughout
Phase 1.
The Phase II Agreement spanned ten years from January 1995 through December 2004. Modeling
of the Pamlico River estuary during Phase I provided a foundation for water quality -based loading
goals for Phase II. Based on the estuary modeling, Phase II established overall performance goals
for the nutrient strategy of 30 percent reduction in nitrogen loading from a baseline year of 1991
and no increase in loading of phosphorus from that baseline. Based on these goals, it also
established nitrogen and phosphorus discharge loading caps for the Association. These caps also
accounted for the load reductions achieved through operational changes implemented during the
1990/1991 period. The Association stayed beneath both caps throughout Phase II, steadily
reducing its loading of both nutrients despite steady increases in flow. Overall, from 1990 through
2003, the Association decreased nitrogen loads to the river by approximately 45% and phosphorus
loads by over 60%, while flows increased approximately 30%. The attached table summarizes caps
and loads through 2008. The success of this collective cap approach may be attributed in part to
the element of time it provided for individual facilities to implement nutrient removal as it became
most cost-effective for them.
Phase ll also established requirements for non -Association point source dischargers and called for
rulemaking to fully enact those requirements. That rulemaking became effective in April 1997. It
required new and expanding dischargers over certain sizes to meet effluent concentration limits and
to fully offset new or increased loads using the same offset approach developed for the
Association. During Phase ll, there were no new dischargers to the basin, and no existing
dischargers became subject to the rule's requirements.
Fact Sheet
NPDES NC0023931

Phase II also established instream nutrient goals for nonpoint sources and called for a separate
nonpoint source (NPS) strategy. These were used to establish a nutrient TMDL, which was
approved by the USEPA on August 10, 1995.
The NPS strategy was put into effect in January 1996 as a voluntary effort that would work from
existing programs, seeking additional funds and developing accounting tools. After two years of
voluntary implementation, the EMC found progress insufficient and initiated nonpoint source
rulemaking. Rules were fashioned after those recently adopted in the adjacent Neuse River basin.
They addressed riparian buffer protection, agriculture, urban stormwater, and fertilizer
management. The rules became effective during 2000 and 2001 and are currently in various stages
of implementation.
Phase III of this Agreement was approved by the EMC on April 14, 2005. It spans an additional ten
years through December 31, 2014. This third phase continues the structure established in Phase II
including overall performance goals for the nutrient strategy of 30 percent reduction in nitrogen
loading from a baseline year of 1991 and no increase in loading of phosphorus from that baseline.
The Phase III Agreement updated Association membership and related nutrient caps. It proposed
action in the first two years to improve the offset rate, resolve related temporal issues, and revisit
alternative offset options. The parties to the Agreement met several times during the first four years
of the Agreement to work on addressing these action items and came to agreement on issues
related to banked credit and credit life.
In 2006 DWQ contracted the NCSU Water Quality Group to estimate the cost-effectiveness of
agricultural BMPs to use for updating the nitrogen offset rate in the Agreement and to establish a
phosphorus offset rate. As a result of the study, the parties to the Agreement indentified actions to
be taken by the conclusion of Phase III and addressed in the Phase IV Agreement:
1. Evaluate whether the Agricultural Cost Share Program continues to provide the most
efficient vehicle to implement the pollution credits trading program. This evaluation should
consider the effect of delays in BMP implementation relative to nutrient cap exceedance and
how such delays may impact the allowable point source nutrient budget.
2. Evaluate the trading offset credit cost calculation method to ensure the offset rate reflects all
actual costs incurred in program development and implementation and reflects the costs of
the type of agricultural BMPs implemented through this program.
3. Conduct a water quality trend analysis, including evaluation of TN losses occurring during
transport to the estuary. This analysis will inform the parties regarding the need for changes
in acceptable loads and the relative impacts of point and non -point contributions.
Fact Sheet
NPDES NCO023931

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

Nitrogen Offset Credits — Tar -Pamlico Basin Association
Nitrogen Credits
Timeframe
(lb)
(kg)
Phase 1
10,138
4,608
Phase II
30,276
13,762
Phase III
10,564
4,802
The Association has. consistently and reliably kept its nutrient loadings beneath the caps without
relying on banked credits. By calendar year 2008, the group had reduced its loads to 63% of its
nitrogen cap and 60% of the phosphorus cap.
Since the Tar -Pamlico strategy's inception, the EPA has praised the strategy for its innovative and
integrative approach to nutrient management and has touted it repeatedly as a model for others to
use. However, guidance released by the EPA's Office of Water Management in 2007 re -iterates
that federal NPDES regulations (40 C.F.R. 122.44(d)(1)) and Section 301(b)(1)(C) of the federal
Clean Water Act require that NPDES permits include any applicable limitations established in or
based upon an approved TMDL. The Tar -Pamlico permits have not included nutrient limits,
because the Agreement specified the Association's caps and, until recently, the EPA Region 4
office had accepted that approach. In light of the 2007 guidance, Region 4 has modified its position
on the matter and is requiring that the members' permits include the group nutrient limits at this
time and individual limits in 2014.
Therefore, the Division proposes at this time to include the Phase III nutrient caps as enforceable
permit limits in the members' individual permits. These limits, like the caps, apply to the aggregate
discharge of nitrogen and phosphorus by the Association members as a group.
In order to establish individual nutrient limits by 2014, the Division must conduct additional technical
studies (e.g., determine delivery rates for each discharger, develop individual N and P allocations)
and work with the Association to complete major revisions to the Tar -Pamlico strategy and the
Agreement. It is also likely that the Division must adopt rules to provide for the operation of the
Association under a group NPDES permit.
Annual Nutrient Loads And Caps, Tar -Pamlico Basin Association
Phase I
Combined
1991'
1992'
1993'
1994'
N+P
Loading Cap a
N (kg/yr)
525,00
500,00
475,000
425,000
0
0
Actual Load
N (kg/yr)
461,39
436,12
417,217
371,200
4
8
% of Cap
N
88
87
88
87
Average Daily
Flow (MGD)
24.88
26.86
28.46
26.65
Fact Sheet
NPDES NC0023931

SUMMARY OF PROPOSED CHANGES
• In the supplement to cover sheet, replaced the aerated grit removal system with the new
centrifugal grit removal system.
• Eliminated monitoring for silver, due to no detection within this permit period
• Added special condition for nutrient reduction, as a member of the Tar -Pamlico Association
• Deleted special condition A (5) for EPA Method 624. DMRs from 2005 to the present show
no detection of purgeable organics
• Added TKN and Nitrite -Nitrate monthly composite sampling, as per strategy for Association -
member renewals in the Tar -Pamlico basin (see previous discussion under "Nutrient
Controls".
• Specified the use of Method 1631-E for mercury sampling in the annual priority pollutant
analyses, instead of the less accurate Method 245.1.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE
Draft Permit to Public Notice: March 3, 2010
Permit Scheduled to Issue: May 2010
NPDES DIVISION CONTACT
If you have questions regarding any of the above information or on the attached permit, please
contact Gil Vinzani at [phone].
NAME: DA
REGIONAL OFFICE COMMENTS
See attached
Fact Sheet
NPDES NCO023931

REASONABLE POTENTIAL ANALYSIS
Greenville Util. Comm. WWTP
NCO023931
Time Period
0
Ow (MGD)
17.6
WWTP Class IV
70105 (cis)
109
IWC (%) ® 7010S 19.927
7010W(cIs)
258
IS701OW 9.5134
3002 (cts)
0
® 3002 WA
Avg, Stream Flow, CIA (ms)
3140
0 CA 0.8565
Rec'ving Stream Tar
River
Stream Class CNSW
Outfall 001
Ow=17.5MGD
STANDARDS 6
PARAMETER
TYPE
CRITERIA 2)
POL
Units
REASONABLE POTENTIAL RESULTS
RECOMMENDED ACTION
NC Was/ AFAV/
RI
hronk Aaub
Ibv Mrr PrM Cx Albwxth t4
Acute: WA
Arsenic
C
SO
1
ugL
0 0
WA
— .............
CM1ronic pVALUE!
Atria. WA
Beryllium
C
6.5
up4
0 0
WA
Chronic'. 759
—._._.___. _._ _
Acute. 15
NO his on 51 samples tram LTMP.
Cadmium
NC
2 15
Ug'L
0 0
WA
NO RP '
CM1rMq: ID -----------------------------------
Acu10: 1,022
No RP.
Chromium
INC
50 1,022
ugVL
51 4
297
Ch.. 251
Acute. 7
DMR data eho. polernmi to ... ad AL. Keep misting
Copper
NC
7 AL 7.3
UWL
142 100
21.4
monilp.1
Chronic. 35
----------------------------tom,
Acute'. 22
No RP.
Cimindv
NC
5 N 22
10
ugVL
10 10 So
N.iv: nd2
�Umlftrdl
Chronic 25 --
— — — — ----- — --- — — _-- —
data set
Acute: WA
Fluoride
NC
1,8W
ugVL
0 0
WA
Chronic 9,033 -
_____._.___
._______.___._._.............
.................
Acute: 34
No RP
Lead
NC
25 N 33S
ugVL
II 11
2S
d2 Not.: n
Chronic'. 125--
—-------------------- —
Limited data
set
Acute: WA
NO RP
Mercury
NC
12
2.0000
ngL
9 00 9 6.00
Note: n<12
Chronic'. fi0
Limited data set
Acute: WA
M.tybdenum
A
3,500
u94
0 0
WA
Chronic '. 'VALUE'
Acute: 261
No rovsonad po anal
Nickel
INC
86 261
ug/L
12 12
589
Chronic 442
Artie, N/A
PMnels
A
1 N
ugVL
0 0
WA
Chronc: 'VALUE!
------ ----------------- .
Acute: 56
Selenium
NC
5.0 56
ug'L
0 0
WA
'
Chronb: 25
-------------------- ___.___
Acute: I
NO DMRras its above detect A l 51 LTMPmsults=0.
Silver
NC
006 AL 123
ug/L
0 0
WA
Eliminate monilpring
Chrome : 0
Acute: 67
DMR data shows potential to exceed AL. Keep.nelkv
Zinc
NC
50 AL 67
uWL
93 93
6.436]
monilpring lrequocn7 of Vironih
Chronic'. 251
Lemmd " Fespwaler Discharge
C=Gamin me"
NC= Nomcarc!nogenic
A= Aesthetic
GUC RR 23931, rpa
5 12010

REASONABLE POTENTIAL ANALYSIS
Date
=6-,J
Cadmium Chromium
BDL=1/2DL Results
Std Dev.
NO DATA
Mean
NO DATA
C.V.
NO DATA
n
0
Mult Factor=
N/A
Max. Value
O.O ug
Max. Fred Cw
N/A ury
Date
Data
1
2
3
4
5
6
<
7
<
8
<
9
<
10
11
12
13
14
15
16
17
18'
19,
20
21
22
<
23
<
24,
<
25'
26.
<
27;
28
29
30,
<
31,
<
32
<..
33,
<
34,
35,
36;
37'.. :.....
<
38
<
39
<
40,,:,
<
41
<
42,
43
<
44'
<
45
46
<
47
48
49
50
51
5
52
53
54
BDL=1/2DL
Results
5 15.0
Std Dev.
8 8.0
Mean
4 14.0
C.V.
9 9.0
n
5 2.5
5 2.5
Mult Factor=
5 2.5
Max. Value
5 2.5
Max. Fred Cw
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5. 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5, 2.5
52.5
5 2.5
5' 2.5
5 2.5
5 2.5
5' 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5 2.5
5' 2.5
5 2.5
5 2.5
5 2.5
5 2.5
3 2.5
2,5907
3,2059
0,8081
51
1.9800
15.0
29.7
GUC rpa 23931, data
5/7/2010

REASONABLE POTENTIAL ANALYSIS
Date Data
2
3
4-
5
6
7
gr
10'
12
13.
14 !
15
16' x
17
19,
20. ;
21,
22,
23;
241.' `
25,
iz
261
27,
28
29r
30!
31(
32
33'
341 y
351 N4
36
371
38
39!
40
411
42
43
44,
45-
46 i
47,
48'
49
50
51
52 4
53'
54
55
56'
57
58
59
60
t;
61 r
62
63
64
65
66 11
Copper I Cyanide
BDL=1/2DL Results
Std Dev.
NO DATA
Mean
NO DATA
C.V.
NO DATA
n
0
Mult Factor = N/A
Max. Value 0.0
Max. Fred Cw N/A
Date
Data
BDL=1/2DL
Results
1
Sep-2005
1
5.0
Sid Dev.
0.0000
2
Dec-2005
5.1
5.0
Mean
5.0000
3-
Mar-2006
2
5.0
C.V.
0.0000
4
Jun-2006
2.8
5,0
n
9
5
Sep-2006�.
1
5.0
6
Dec-2006
1
5.0
Mult Factor =
1.0000
7
Mar-2007
1
5.0
Max. Value
5.0
8
Jun-2007
8
5.0
Max. Fred Cw
5.0
9
'Jub2007
7
5.000
10
'
11
12
13
14
15
16
17
18
19
}t
20
21
22
23
24
25
26
27
28
29•
30'
31
32i
33,
34
35
36
371
38-
391
40
41
42�
431
44.
45
46
47
48
49
50
51
52
53
54
55
56
;
57
58
59
60,.
61
62
63
64
65
66
-9_
GUC rpa 23931, data
4/29/2010

REASONABLE POTENTIAL ANALYSIS
I Fluoride I Lead I
Date
1
2
3
4
5
6
7
8
9
10 ,.
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30' -
31
32
33
34
35
36
37
36
39
40
41
42
43
44
45
46
47
48
49
50
51.
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
BDL=1/2DL Results
Ski Dev
Mean
C.V.
n
Mull Factor=
Max. Value
Max. Pred Cw
NO DATA
NO DATA
NO DATA
0
N/A
0.0
N/A
61
62
63
64
65
66
Date Data
BDL=1/2DL
Results
2.5
2.5
Sad Dev.
2.5
2.5
Mean
2.5
2.5
C,V.
2.5
2.5
n
2.5
2.5
25
2.5
Mult Factor=
2.5
2.5
Max. Value
2.5
2.5
Max. Pred Cw
2.5
2,5
2.5
2,5
2.5
2,5
0.0000
2,5000
0.0000
11
1,0000
2.5
2.5
13-
GUC rpa 23931, data
4/29/2010

REASONABLE POTENTIAL ANALYSIS
Date Data
1 Mar-2005
2. Jun-2005
3 Sep-2005
4 Dec-2005 _-
5 Mar-2006;"
6 Jun-2006 ;
7 Sep-2006
8 Mar-2007
9 Jun-2007
10 Dec -zoos '
11
12
13
14v
15
16
17
18 y
19
20 _n
21 4
22
23
24.
25
26'.;;
27
28,
29'
30
31
32q.
33
T-
34 .
35
36,.
371
38- 'y
39,
40; ,
41
42
43
44.
45-.
46
47,
48
49
50
51
52
53
54
55'
56
57
58
59
60
61
62
r'
63
64
65
66
Mercury I Molybdenum
BDL=1/2DL
Results
Std Dev.
2.5
2.5
Mean
1.6
1.0
C.V.
1.8
1.0
n
1.2
1.0
0.5
1.0
Mutt Factor =
0.5
1.0
Max. Value
2.1
2.1
Max. Fred Cw
1.6
1.0
2.0
2.0
0.6144
4000
0.4389
9
2.40
2.5
6.0
60
61
62
63
64
65
66
Date Data BDL=1/2DL Results
Std Dev.
4'- Mean
CV,
n
Mutt Factor=
Max. Value
Max. Pred Cw
NO DATA
NO DATA
NO DATA
0
N/A
0.0
N/A
17-
GUC rpa 23931, data
4/29/2010

REASONABLE POTENTIAL ANALYSIS
Nickel
Phenols
Date
Data
BDL=MDL
Results
Dale
Data
BDL-112DL Results
1
2.5
2.5
Std Dev.
4.0961
1
71
Slut Dev.
NO
DATA
2
2.5
2.5
Mean
5.1250
2
Mean
NO
DATA
3
2.5
2.5
C.V.
0,7992
3
,1
C.V.
NO
DATA
4
2.5
2.5
n
12
4
n
0
5
2.5
2.5
5
6
2.5
2.5
Mutt Factor =
3,6800
6
Mutt Factor =
N/A
7
i
25
2.5
Max. Value
16.0 ug/L
7
v:
Max. Value
0.0 ug/L
8
6
6.0
Max. Prod Cw
58.9 ug/L
8
Max. Pred Cw
N/A ug/L
10
8
8.0
10
11
6
6.0
11
12
16
16.0
12
13
i
13
14
14'
15
15
16
16
17
17
18
18
19
19
20
}
20
21
n
21
22
22
23
23
24
24
25
25
26
za
26
1F1.
27
27'
28
28,
29
JL
29'
30
30
31
31
32
32
'
33
+,4
33
34 .ry
34
�r
35
35
36
36
a
37
37
38
38
39
39
40
40'
41
41
42
42
43
43
44
44
45.
tr
45
46
46
47
47
48
48
49
49
50
50
9
51
51
52
52
53
53
54
54
55
55
56
56
57
}
57
58
58
59
59
60
60
61
��
61
62
62
63
63
65
65
66
�.<
66
GUC rya 23931, data
21 - 4/29/2010

REASONABLE POTENTIAL ANALYSIS
Dale
Data
BDL=1/2DL
Results
1
7
498
498.0
Std Dev.
385,5568
2
281
281.0
Mean
423.7055
3
314
314.0
C.V.
0,9100
4
.1109
1109.0
n
163
5
286
288.0
6
344
344.0
Mull Factor =
3.5300
7
w
622
622.0
Max. Value
1824.0
8
865
865.0
Max. Fred Cw
6438.7
9
222
222.0
10
465
465.0
11
138
138.0
12
'
824
824.0
13
350
350.0
14
535
535.0
15
99
99.0
16
.y,
1143
1143.0
17
336
336.0
18
292.
292.0
19
741
741.0
20
21'
22
336
336.0
23 %
505
505.0
24
48
48.0
25
4
322
322.0
26
603
603.0
27
A
346
346.0
28
29
30'
1164
1164.0
31
1173
1173.0
32` '
581
581.0
33
1355
1355.0
34
�,
637
637.0
35
36
1144
1144.0
37
.ti
380
380,0
38
1283
1283.0
39
.};
511
511.0
40
197
197.0
41
283
283.0
42
54
54.0
43
453
453.0
44
153
153.0
45
46'
47
32
32.0
48
253
253.0
49
231
231.0
50
402
402.0
51
361
361.0
52
526
526.0
53
450
450.0
54
458
458.0
55
262
262.0
56
78
78.0
57
V
58
59
116
116.0
60
_
454
454.0
61
it
62
63
64
39
39.0
65
234
234.0
66
-„
528
528.0
29 -
GUC rpa 23931, data
4/29/2010

Vinzani, Gil
From:
[e-mail]
Sent:
Friday, March 12, 2010 12:25 PM
To:
Vinzani, Gil
Subject:
NC0023931, Greenville Utilities Commission
EPA has no comments on this draft permit.

Greenville
Utilities
March 15, 2010
Gil Vinzani, PG
NC DENR/Water Quality/NPDES Program
1617 Mail Service Center
Raleigh, NC 27699-1617
Subject Greenville Utilities Commission W WTP
Draft Permit Renewal Comments
NPDLS Permit NCO023931
Dear Mr. Vinrani:
We would like to bring one item to your attention. Please see the `Supplement to Permit Cover Sheet'
that describes the treatment of facility process scheme. Item 91, third bullet: oil and grease collection.
Please be advised that the mechanical oil and grease collection trough was removed during the
installation of our odor control system. Please remove this language from our process description. All
other descriptors related to the treatment facility process are correct.
Should you have questions or need further assistance in this matter, please contact me at (252) 551-
1542.
Sincerely, I
Daniel H. Tracy, Super,,llendenUORC
Wastewater Treatment Plant
DI fl7lpb
cc: Mr. Randall D. Emory, PE, Director of Water Resources
Mr. Barrett L. Lasater, Plants Manager
Mr. Thomas W. I lardison, W WTP Operations Coordinator
801 Mmnit,rd Road
CG aa•nr i llc. NC
27835
%amk W guccom
Your Lxal
Advantage

AFFIDAVIT OF PUBLICATION
NORTH CAROLINA.
Wake County. ) Ss.
+ .`, ..Poona"Notice
.
North Carolinamnvironmental
Management CommisisslaNNP DES Unit
(;-,161] Mail Service Center
Raleigh, NC 2]699161]
t� ,.! • Notice of Intent be Issue a
1I NPDES-Wastewater PemNt
The North'Carolina Erivironrtnenial M6n :v
J agement Commission Proposes; to issue a
NPDES wastewater discharge permittothe
persons)listed below. ,,, -t ,
Wrltteric hlmentb re9ardin9 the Proposed
Permit will be accepted until 30 days after
the publish date of this notice. The Director
of the NC Division of Water Duality (DWQ)
may hold a public hearing should there be a
!,significant degree of Public interest. Please
•,moil comments anNor,infarmation requests
,to DWQ at the above address. Interested
persons may visit the DWQ at 512 W Solis-
, bury Street, Raleigh, NC to review informa,
Lion-on'We. Additional information on
NPDES Permits and this notice TOY be
found on our website: www.ncwaterquali.
tv.oro, or by calling (919) BF-630e:: - I ,
Greenville Utilities Commission has re�
quested renewal of ,NPDESf Permit
NCO023931 to discharge to the Tor. River m
I Pitt County, -within the Tor -Pamlico River
Basin.
1 N80; March], 2010;ey:'.1;, •I
Before the undersigned, a Notary Public of Wake
County North Carolina, duly commissioned and authorized to
administer oaths, affirmations, etc., personally appeared
Deborah McCullers, who, being duly sworn or affirmed,
according to law, Cloth depose and say that she is Accounts
Receivable Specialist of The News and Observer a corporation
organized and doing business under the Laws of the State of
North Carolina, and publishing a newspaper known as The
News and Observer, in the City of Raleigh , Wake
County and State aforesaid, the said newspaper in which such
notice, paper, document, or legal advertisement was published
was, at the time of each and every such publication, a
newspaper meeting all of the requirements and qualifications
of Section 1-597 of the General Statutes of North Carolina and
was a qualified newspaper within the meaning of Section 1-
597 of the General Statutes of North Carolina, and that as such
she makes this affidavit; that she is familiar with the books,
files and business of said corporation and by reference to the
files of said publication the attached advertisement for
NCDENR/ DWQ/ POINT SOURCE was inserted in the
aforesaid newspaper on dates as follows: 03/07/10
Account Number: 80763040
The above is correctly copied from the books and files of the aforesaid Corporation and publication.
�.�`` yet t Scro
_ ptotarp -
Ski; ubllc : i=(vZ'
co, tl%"�'
f
Deborah McCullers, Accounts Receivable Specialist
Wake County, North Carolina
Sworn or affirmed to, and subscribed before me, this
08 day of MARCH , 2010 AD by, Deborah McCullers
In Testimony Whereof, I have hereunto set my hand
and affixed my official seal, the day and year aforesaid.
Janet Scroggs, Notary Pu t4Yc "
My commission expires 14th day of March 2014.

Vinzani, Gil
From: Bullock, Robert
Sent: Wednesday, August 12, 2009 2:35 PM
To: Vinzani, Gil
Subject: RE: Greenville Utilities Commission
Gil,
I do not have any comments on the permit and I will not be providing a staff report unless you need it. Greenville
Utilities is a well maintained and operated plant. We have not had any problems with the plant and they consistently
meet their permit requirements. 1 inspected the plant in March 2009 and it will be next year before I complete another
inspection. (unless something comes up) If you would still like to attend the next inspection let me know and I will set up
a time where we both can go.
Thanks,
Robbie
Robbie Bullock
WWTP Consultant
252-948-3924 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: Vinzani, Gil
Sent: Thursday, August 06, 2009 3:06 PM
To: Bullock, Robert
Subject: Greenville Utilities Commission
Robbie:
Attached is my draft permit renewal and fact sheet. Please let me know if you have any comments or questions. will
you be providing a staff report?
Also,.if you need to do a site visit in the near future, please let me know if I can tag along.
Thanks,
Gil
Gil Vinzani, Engineer
Eastern NPDES Program
919-807-6395
E-mail correspondence to and from this address may be subject to the NC Public Records Act
1

'Vinzani, Gil
From: Bullock, Robert
Sent: Friday, March 05, 2010 4:17 PM
To: Vinzani, Gil
Subject: RE: Greenville Utilities Commisssion NPDES Permit
Gil,
I don't have any comments.
Thanks,
Robbie
Robbie Bullock
WWTP Consultant
252-948-3924 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: Vinzani, Gil
Sent: Friday, March 05, 2010 9:59 AM
To: Bullock, Robert
Cc: Hodge, Al
Subject: Greenville Utilities Commisssion NPDES Permit
Attached is the draft NPDES permit renewal for GUC. Please let me now if you have any comments.
Thanks,
Gil
Gil Vinzani, Engineer
Eastern NPDES Program
919-807-6395
E-mail correspondence to and from this address may be subject to the NC Public Records Act
1

Greenville
UtilitiesApril 27, 2009
Charles H. Weaver, Jr.
NC DENR / Water Quality / NPDES Unit
1617 Mail Service Center
Raleigh, NC 27699-1617
Subject: Renewal of NPDES Permit NCO023931
Greenville Utilities Commission (GUC), Wastewater Treatment Plant,
Greenville, NC, Pitt County
Dear Mr. Weaver:
Greenville Utilities hereby requests the renewal of NPDES Permit #NC0023931.
The current five year permit expires October 31, 2009.
Within the term of the current permit, the aerated grit removal system was replaced
with a centrifugal grit removal/clasifier system. This system was changed due to
high maintenance cost of the air-lift pumps.
In support of this permit renewal request we are attaching the completed EPA Form
2A and a narrative description of the sludge management plan for our facility. One
signed original and two copies are enclosed.
If you have any questions or if I can be of further assistance in this matter, please
contact me at (252)-551-1542.
Sincerely,/f REU I®
Daniel H. Tracy, Superintendent/ORC APO 3 0 2009
Wastewater Treatment Plant
Enclosure
dht/
PO Kr, 1847
DENR - WATER OUALTTY
POINT SOURCE R.!2°•NCH
Oreemvule, NC c: Mr. Randall D. Emory, P. E., Director of Water Resources
27335-1847 Mr. Barrett L. Lasater, Plants Manager
252752,7166 Mr. Thomas W. Hardison, WWTP Operations Coordinator
www.guc.coni /�gex,<nP
00 �
years
Your Loco! NPDES renewal 2009
Greemille Utilities
Adeanwge

Sludge Management Plan
In November 2005, the Greenville Utilities Commission completed construction of a
biosolids dewatering facility consisting of two, 2-meter belt filter presses and all
associated appurtenances. Waste activated sludge generated during the treatment process
is stored in aerated holding tanks until processed in the dewatering facility. Output solids
concentrations of the residuals from this facility average around 16%.
The Commission has also entered into a long-term biosolids handling agreement with
McGill Environmental Systems, a private composting firm that transports and processes
all of the dewatered biosolids generated at the Commission's WWTP.
During calendar year 2008, the Greenville Utilities Commission's wastewater treatment
plant generated 1646.54 dry tons of residual biosolids which were all processed by
McGill Environmental Systems.

InFlt
17.5
Ma
Pa
Fe
Legend
--- Intermittent Operation
Effluent
Discharge 001
Schematic of Wastewater Flow
for
Greenville Utilities Commission
Wastewater Treatment Plant
Greenville, Pitt Co., NC
NPDES Permit No. NC0023931
Discharge Serial No. 001

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
GUC, NCO023931
Renewal
Tar/Pamlico
SUPPLEMENTAL APPLICATION INFORMATION `
PART F.INDUSTRIAL USER DISCHARGES AND RCRAICERCLA WASTES'.
All treatment works receiving discharges from significant industrial users or which receive RCRA,CERCLA, or other remedial wastes must
complete part F.
GENERAL INFORMATION:
F.I. Pretreatment program. Does the treatment works have, or is subject to, an approved pretreatment program?
® Yes ❑ No
F.2. Number of Significant Industrial Users (SIUs) and Categorical Industrial Users (CIUs). Provide the number of each of the following types of
industrial users that discharge to the treatment works.
a. Number of non -categorical SIUs. 2
b. Number of ClUs. 4
SIGNIFICANT INDUSTRIAL USER INFORMATION:
Supply the following information for each SIU. If more than one SIU discharges to the treatment works, copy questions F.3 through F.8 and
provide the information requested for each SIU.
F.3. Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: DSM Pharmaceuticals Inc.
Mailing Address: 5900 NW Greenville Blvd.
Greenville NC 27835
F.4. Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Chemical manufacturing synthetic fiber manufacturing
F.5. Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Pharmaceuticals synthetic fibers
Raw material(s): Organic chemicals, polyethylene resin pellets
F.6. Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
500,000 gpd ( X continuous or intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater Flow discharged into the collection system
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
10,000 gpd ( X continuous or intermittent)
F.7. Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards M Yes ❑ No
If subject to categorical pretreatment standards, which category and subcategory?
40 CFR 439 Subparts A C and D
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 3 7550-22. Page 21 of 30

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
GUC, NCO023931
Renewal
Tar/Pamlico
F.8.
Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.
F.3.
Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Karastan - Division of Mohawk Industries, Inc.
Mailing Address: 2107 Dickinson Avenue
Greenville NC 27835
F.4.
Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Yam dying process
F.S.
Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Dyed yarn
Raw material(s): Wool dyes
F.6.
Flow Rate.
a. Process wastewater Sow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
56,600 gpd ( continuous or X intermittent)
b. Non -process wastewater Sow rate. Indicate the average daily volume of non -process wastewater Sow discharged into the collection system
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
6.000 gpd ( X continuous or intermittent)
F.7.
Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ❑ Yes ® No
If subject to categorical pretreatment standards, which category and subcategory?
F.8.
Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 22 of 30

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
GUC, NCO023931
Renewal
Tar/Pamlico
F.3.
Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: NACCO Materials Handling Group
Mailing Address: 5200 Greenville Boulevard N.E.
Greenville NC 27834
FA.
Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Manufacture of material handling equipment primarily fork lift trucks
F.5.
Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Material handling equipment Primarily fork lift trucks
Raw material(s): Metal parts for material handling equipment
F.6.
Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
21,200 gpd ( continuous or X intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
7,500 gpd ( X continuous or intermittent)
F.7.
Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ® Yes ❑ No
If subject to categorical pretreatment standards, which category and subcategory?
40 CFR 433 Metal Finishing
F.8.
Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.
EPA Form 3510-2A (Rev. 1.99). Replaces EPA forms 7550-6 8 7550-22. Page 23 of 30

ME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
GUC, NCO023931
L77
Renewal
Tar/Pamlico
F.3.
Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: FUJI SILYSIA CHEMICAL USA LTD
Mailing Address: 1215 Suqq Parkway
Greenville NC 27834
F.4.
Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Manufacturing micronized silica gel
F.5.
Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Silica gel
Raw material(s): Sodium silicate Sulfuric Acid Aqueous Ammonia Caustic
F.6.
Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
56,000 gpd ( continuous or X intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
6,000 gpd ( X continuous or intermittent)
F.7.
Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ❑ Yes ® No
If subject to categorical pretreatment standards, which category and subcategory?
n/a
F.8.
Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 8 7550-22. Page 24 of 30

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
GUC, NCO023931
Renewal
Tar/Pamlico
F.3.
Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Hatteras Hammocks inc.
Mailing Address: 1104 Clark Street
Greenville NC 27834
F.4.
Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Yam dying process
F.S.
Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIIJ's
discharge.
Principal product(s): Hammocks and hammock accessories
Raw material(s): Yarn fabric wood metal tubing
F.6.
Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
2,000 gpd ( continuous or X intermittent)
b. Non -process wastewater Flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
500 gpd ( X continuous or intermittent)
F.7.
Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ® Yes ❑ No
If subject to categorical pretreatment standards, which category and subcategory?
40 CFR 433 Metal Finishing
F.8.
Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550.6 & 7550-22. Page 25 of 30

FACILITY NAME AND PERMIT NUMBER:
PERMIT ACTION REQUESTED:
RIVER BASIN:
GUC, NCO023931
Renewal
Tar/Pamlico
F.3.
Significant Industrial User Information. Provide the name and address of each SIU discharging to the treatment works. Submit additional pages
as necessary.
Name: Robert Bosch Tool Corporation
Mailing Address: 310 Staten Road
Greenville NC 27834
F.4.
Industrial Processes. Describe all the industrial processes that affect or contribute to the SIU's discharge.
Manufacture of various types of cutting tools for the metal and woodworking industry including drill and router bits
F.5.
Principal Product(s) and Raw Material(s). Describe all of the principal processes and raw materials that affect or contribute to the SIU's
discharge.
Principal product(s): Drill and router bits
Raw material(s): metal blanks
F.6.
Flow Rate.
a. Process wastewater flow rate. Indicate the average daily volume of process wastewater discharge into the collection system in gallons per
day (gpd) and whether the discharge is continuous or intermittent.
3,600 gpd ( continuous or X intermittent)
b. Non -process wastewater flow rate. Indicate the average daily volume of non -process wastewater flow discharged into the collection system
in gallons per day (gpd) and whether the discharge is continuous or intermittent.
500 gpd ( X continuous or intermittent)
F.7.
Pretreatment Standards. Indicate whether the SIU is subject to the following:
a. Local limits ® Yes ❑ No
b. Categorical pretreatment standards ❑ Yes ® No
If subject to categorical pretreatment standards, which category and subcategory?
n/a
F.8.
Problems at the Treatment Works Attributed to Waste Discharge by the SIU. Has the SIU caused or contributed to any problems (e.g.,
upsets, interference) at the treatment works in the past three years?
❑ Yes ® No If yes, describe each episode.
EPA Form 3510-2A (Rev. 1-99). Replaces EPA forms 7550-6 & 7550-22. Page 26 of 30

FACT SHEET —TAR PAM RIVER BASIN
REVIEW FOR EXPEDITED PERMIT RENEWALS
(Instructions for Permit Writer)
Basic Informa ionto Determine Potential for Expedited Permit Renewal
W /
Reviewer(s) / Date:
sJ / ;o zciu
cn w
Coved
Permit Number:
NCO023931
Facility Name:
GUC WWTP
Sub -basin number:
03-03-05
Receiving Stream:
TAR RIVER
Permit Stream Classification:
I C, NSW
Public
V
Private WWTP
I ❑
WTP
❑*
Industrial
❑
Other
* If WTP, add permitted flow imit(MGD):
D'
Pretreatment? YES O
(/ YES then contact PERCS or data RPA)
TRC limit/footnote? YES/ADD** (NO),(If
in permit edit FOOTNOTE see TRC
FOOTNOTE text
WET testing/footnote? YES/ADD** NO
(If in permit edit SPECIAL CONDITION see
WET language text. check FOOTNOTE
NH3 limit? YES/ADD'* NO
(If in permit check, edit LIMIT for applicable LIMITS
categories, monthly1weekly or weekly/daily)
** IWC evaluation needed? YES
IWC calculation in file? YES NO
___QN.0i
***Association member? YES NO
(Check. edit SPECIAL COND177ON and FOOTNOTE
as warranted)
***Instream monitoring? YES NO
(Check, edit FOOTNOTE where warranted)
Permit Special Condition . YES/ADD O
(If facility has BACKUP CHLORMI TION see
SPEGALCONDITION and FOOTNOTEtext)
303(d) listed? YES NO
Watch Listed? YES NO
Permit MODs since last renewal.YES NO
Compliance issues? YES NO
Existing expiration date: 10/31 2009
Next cycle expiration date:
1 10/31/2014
Miscellaneous Comments
* A ly WTP PermittingStrategy, WET maybe required
** IWC requires 7Q1O low data, check with Basin Coordinator or best source
*** Members now in Phase III, members have wavier on Instream monitoring
Select Expedited Catergory That Applies To This Permit Renewal
SIMPLE EXPEDITED - administrative renewal with no changes, or only minor
❑ changes such as TRC or ownership change. Includes conventional WTPs (does not
include permits with Special Conditions, Reverse Osmosis, or Ion -exchange WTPs).
COMPLEX EXPEDITED - includes Special Conditions such as EAA, Wastewater
❑ Management Plan, 303(d) listed, toxicity testing, instream monitoring, compliance
concerns, edit NH3 limit, phased limits, stream re -class, association membership).
N�OT�XPEDITED - Mark all of the following that apply:
CU-' _ ajor Facility (municipal/industrial)
Permitted flow> 0.500 MGD (requires full Fact Sheet)
t❑ Minor Municipal with Pretreatment Program (SIUs)
❑ 'or Industrial subject to Federal Effluent guidelines
L`YLimits based on RPA (toxicants/metals, GW remediation for organics)
❑ Other
r-�
2009 Tar Pam Basin Permit Review/Shared Drive/Lumber Basin