NC0021555_Speculative Limits_20060825

NPDES DOCUMENT SCANNING COVER SHEET
NPDES Permit:
NC0021555
Newport WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Instream Assessment (67b)
,Speculative
Limits
Environmental Assessment (EA)
Document Date:
August 25, 2006
This document is printed on reuse paper - ignore any
content on time remrerse side

Michael F. Easley, Govemor
William G. RossJr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
August 25, 2006
David T. Upchurch
P.O. Box 1737
Southern Pines, North Carolina 28388
Subject: Speculative Effluent Limits
NPDES Permit NC0021555
Town of Newport WWTP
Carteret County
Dear Mr. Upchurch:
This letter is in response to your request for speculative effluent limits for 2.0 MGD, 3.0 MGD and 4.0 MGD for the Town of
Newport WWTP.
Receiving Stream: The Town of Newport's WWTP discharges to the Newport River. The Newport River is classified C waters
at the discharge location. The classification of the river changes to SA HQW approximately 7 miles downstream of the
Newport discharge. The Newport River is impaired for Fecal Coliform at this point. To determine if the expansion had the
potential to affect the shellfish closure line the Shellfish Sanitation and Recreational Water Quality Section from the Division
of Environmental Health conducted a dye study. The dye study concluded that the maximum flow the Town can discharge
without affecting the current closure line is 1.5 MGD.
Speculative Limits:
TA
._ r ._
'.SPECULAT V<E LIMITS
:. Parameter
; , :
MonthlyMOrag t.
Weekly Average
Daily Maximum
Flow
1.5 MGD
BOD, 5-day, 20°C (April 1-
October 31)
3.6 mg/L
5.4 mg/L
BOD, 5-day, 20°C (November 1-
March 31)
5.4 mg/L
8.1 mg/L
Total Suspended Solids
30 mg/L
45 mg/L
NH3 as N (April 1-October 31)
1.0 mg/L
3.0 mg/L
NH3 as N (November 1-March
31)
2.0 mg/L
r-
6.0 mg/L
Dissolved Oxygen
> 6 mg/L
pH
6.0 — 9.0
Fecal Coliform
(geometric mean)
14 / 100 ml
28 / 100 ml
Enterococci '
35 / 100 ml
Total Residual Chlorine
19 µg/L
Total Nitrogen
Monitor
Total Phosphorus
Monitor
N. C. Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 [phone]
Customer Service 1 800 623-7748
NCDENR

Speculative Limits Letter
Town of Newport
Page 2 of 2
Engineering Alternatives Analysis (EAA): Please note that the Division cannot guarantee that an NPDES permit for this
proposed discharge will be issued with these speculative limits. Final decisions can only be made after the Division receives
and evaluates a formal permit application for the town's proposed discharge. In accordance with the North Carolina General
Statutes, the practicable wastewater treatment and disposal alternative with the least adverse impact on the environment is
required to be implemented. Therefore, as a component of all NPDES permit applications for new or expanding flow, a
detailed engineering alternatives analysis (EAA) must be prepared. The EAA must justify requested flows, and provide an
analysis of potential wastewater treatment alternatives. Alternatives to a surface water discharge, such as spray/drip irrigation,
wastewater reuse, or inflow/infiltration reduction, are usually considered to be environmentally preferable. A copy of the EAA
requirements is attached to this letter. Permit applications for new or expanding flow will be returned as incomplete if all
EAA requirements are not adequately addressed. If you have any questions regarding these requirements, please contact
the DWQ NPDES Unit at 919-733-5083.
State Environmental Policy Act (SEPA) EA/EIS Requirements. A SEPA EA/EIS document must be prepared for all projects
that 1) need a permit; 2) use public money or affect public lands; and 3) might have a potential to significantly impact the
environment. For new wastewater discharges, significant impact is defined as a proposed discharge of >500,000 gpd or
producing an instream waste concentration of > 33% based on summer 7Q10 flow conditions. For existing discharges,
significant impact is defined as an expansion of > 500,000 gpd additional flow. Since your existing facility is proposing an
expansion of >500,000 gpd additional flow, you must prepare a SEPA document that evaluates the potential for
impacting the quality of the environment. The NPDES Unit will not accept an NPDES permit application for the
proposed expansion until the Division has approved the SEPA document and sent a Finding of No Significant Impact
(FONSI) to the State Clearinghouse for review and continent. A SEPA Environmental Assessment (EA) should contain a
clear justification for the proposed project. If the SEPA EA demonstrates that the project may result in a significant adverse
effect on the quality of the environment, you must then prepare a SEPA EIS (Environmental Impact Statement). Since your
proposed expansion is subject to SEPA, the EAA requirements discussed above will need to be folded into the SEPA
document. The SEPA process will be delayed if all EAA requirements are not adequately addressed. If you have any
questions regarding SEPA EA/EIS requirements, please contact Hanna Stallings with the DWQ Planning Branch at (919) 733-
5083, ext. 555.
Should you have any questions about these speculative limits or NPDES permitting requirements, please feel free to contact
Teresa Rodriguez at [phone], extension 553.
Sincerely,
J Gil Vinzani, P.E.
Eastern NPDES Unit Supervisor
cc: Shellfish Sanitation and Recreational Water Quality Section
Washington Regional Office, Surface Water Protection Section
Clay Dulaney, Town of Newport
Central Files
NPDES File

Town of Newport Wastewater Treatment Plant
Dye Study
NC Department of Environment and Natural Resources
Division of Environmental Health
Shellfish Sanitation and Recreational Water Quality Section
June 12, 2006
INTRODUCTION
The Town of Newport has begun the process of applying for a National Pollutant Discharge
Elimination System (NPDES) permit to allow for a potential increase in daily flow from 750,000
gallons per day (gpd) up to 4 million gpd. In order to assess the feasibility of this request, a dye
study was carried out to determine if this increase in flow would impact the existing shellfishing
closure line downstream in the Newport River. It is important to note that this study examines
only a failure in the disinfection system with discharge at the normal plant outfall. It does not
take into account failures from the inflow at the head of the plant, or failures at lift stations.
In 2003, another dye study was conducted by Shellfish Sanitation in order to determine if the
Newport Wastewater Treatment Plant would be able to increase their permitted flow from
500,000 gpd to 750,000 gpd. It was found that this increase in flow would not impact the
existing shellfish closure line.
MATERIALS AND METHODS
Prior to the start of the study, tidal cycle data for the river was collected. Initially, a Remote
Data Systems WL-80 tidal monitor was used, however this gauge was stolen. A new Remote
Data Systems Ecotone Environmental Monitor was put into place, and functioned until the study
was completed. The tide gauges were placed just outside of the outfall pipe for the plant, and
collected tidal data from February 11, 2006 until June 5, 2006. This data was used to predict the
tidal cycle at the outfall on the day of the study, allowing us to begin administering dye at peak
high tide (Figure 1).
Multiple samples were collected from the inflow and the only functioning clarifier, and analyzed
for bacterial concentrations. Fecal coliform MPN at the inflow showed a maximum of 13
million/100 mL, while the clarifier showed a maximum of 92,000/100 mL (Table 1).
The dye study began June 6, 2006 at 7:45 pm. Rhodamine WT dye (1.2 X 108 ppb
concentration) was pumped into the outfall pipe at a constant rate of 60 mL of dye per minute
using a Watson -Marlow 504U peristaltic pump. Overall, a total of 65 liters of dye were pumped
into the pipe over the course of 18 hours. During this time, the wastewater treatment plant had
an average flow of 670,000 gpd. However, during the first few hours of the study, the plant was
experiencing extremely high flow due to a very heavy rainstorm in the area. The flow level was
1.2 million gpd at the start of the study, and remained over 1 million gpd until around 10:00 pm.

i
A Turner Designs Model 10-AU fluorometer was stationed about 2.5 miles downstream of the
outfall, and was set to monitor the river throughout the first falling tide. The fluorometer was
calibrated against a known standard of 50 ppb, and blanked prior to dye release.
On the morning of June 7, 2006, the fluorometer was loaded onto a boat, and measurements were
taken downstream throughout the second falling tide. Corresponding GPS points were taken
using a Trimble GeoXT receiver, to allow for spatial analysis of the data at a later time. During
this time period, winds were blowing from the northwest at about 10 mph, which, when
combined with the storm from the night before, represents an adverse condition serving to push
the dye further downstream towards the closure line.
RESULTS
The dye reached the river about 9 minutes after entering the pipe, and began flowing downstream
with the tide. Samples taken from the outfall pipe at the point of discharge were run through the
fluorometer, and indicated a reading of 520 ppb. Based on these readings, the concentration of
dye in the discharge pipe was calculated using the equation
Cs = CD(QD/Qs), where Cs = the concentration of dye in the discharge pipe (ppb)
CD = the concentration of Rhodamine WT dye (ppb)
QD = the flow rate of the dye release (gpd)
Qs = the flow rate of the sewage (gpd)
Based on the calculated Cs_of 3,600 ppb, a dilution factor was calculated using the equation
D = Cs/CF , where D = the dilution factor
CF = the fluorometer reading from river samples
Using the calculated D of 608.1, a projected fecal coliform MPN at the point of discharge was
calculated with the equation
Fp = Fs/D , where Fp = the projected fecal coliform MPN at a given point
Fs = Fecal MPN at the source (in this case, the clarifier)
Thus, it was projected the fecal coliform MPN at the point of discharge into the river would be
13,295.
During the stationary overnight monitoring period, dye began to reach the monitoring site 2.5
miles downstream at 10:55 pm, about 3 hours after the initial release.. Dye readings peaked out
at 5.92 ppb at 12:15 am. Using the equations above, it was calculated that this fluorometer
reading corresponded to a fecal coliform MPN of 151.
The following morning, the fluorometer was moved to a boat, and readings were taken further
downstream (Figure 2). These readings indicated that dye was able to reach the end of 'The
Narrows' within 14 hours, the `Crossrock' within 15 hours, and the current shellfish closure line
(about 9.5 miles downstream) within 16 hours.

Initial readings were taken at 'The Narrows' starting at 9:28 am, and monitoring continued until
slack low tide at 1:00 pm. Maximum fluorometer readings at each sampling site were recorded,
and used to project fecal coliform MPNs at the various sites.
The maximum fluorometer readings during this monitoring period were found just north of Penn
Point, where the fluorometer registered readings of 0.16 ppb and 0.208 ppb at 12:40 pm and
12:55 pm, respectively. These readings correspond to fecal coliform MPNs of 4.1 and 5.3 (Table
2).
DISCUSSION
Using data collected from the fluorometer, as well as bacterial and flow information from the
plant, calculations were done to determine what the fecal coliform MPN would be at the closure
line should a failure occur in the disinfection system.
First, a dilution facto D, was calculated using the maximum allowable fecal coliform MPN at
the closure line of 14 At an MPN of 14, regulations require that waters are closed to
shellfishing. -�
17-7
D = Fs/Fp = 92,000/14 = 6571
Using the fluorometer readings, a `fluorometer reading versus distance' curve was generated, and
used to determine the maximum fluorometer reading at the existing closure line. A value of 0.28
ppb was determined.
Using this value, as well as the dilution factor calculated above, a discharge pipe dye
concentration value (Cs) was calculated.
Cs = D(CF) = 6571(0.28) = 1840 ppb
This value was then used in the equation Cs = CD(QD/Qs) to determine the flow rate of sewage
that would lead to a fecal coliform MPN of 14 at the closure line.
These calculations indicated that the maximum flow.the Newport Wastewater Treatment Plant
could generate without affecting the current closure line would bed,1.5 million gpdj The study
also demonstrated the importance of rapid notification should a spill occur, as the dye reached
open shellfishing waters within 16 hours, if not sooner. As plant infrastructure grows with the
increased flow, the potential for failure from newly added lift stations and manholes only adds to
the importance for immediate notification of a spill. The Shellfish Sanitation and Recreational
Water Quality section requests that the Town of Newport be required by permit to report any
spills to our office immediately upon discovery.

uctuation (Inches)
40
35
30
25
20
15
10
5
0
Figure 1 -Newport River Tides
Date (6/1/06 - 6/7/06)

tzzdr
Legend
Shellfish Growing Area Classifications
Approved
Conditionally Approved Open
Conditionally Approved Closed
Prohibited
O Dye Study
RoadNCCoast
0 0.1250.25
North Carolina Department of
Environment and Natural Resources'.
Division of Environmental Health
Shellfish Sanitation and Recreational
Water Quality Section
July 11, 2006

Table 1— Wastewater Treatment Plant Sample Results
Date
Clarifier (MPN)
Inflow (MPN)
02/09/2006
11,000
4,900,000
02/15/2006
17,000
2,400,000
02/23/2006
24,000
3,300,000
02/28/2006
92,000 ,
13,000,000
05/25/2006
4,900 -
7,900,000
05/31/2006
3,300
11,000,000

Figure 2: Newport River Dye Study
Legend
Shellfish Growing Area Classifications
Approved
Conditionally Approved Open
Conditionally Approved Closed
Prohibited
O Dye Study
RoadNCCoast
,_ 0.5 0.75 1
Mis
North CaPolina Department of
Environment and Natural Resources
Division of Environmental Health
Shellfish Sanitation and Recreational
Water Quality Section
July 11, 2006

Table 2 — Dye Study Results
Data Set
ID
Data Set Start
Time
Maximum Fluorometer
Reading (ppb)
MPN Equivalent
0
-
520
13295
1
6:55pm
5.92
151
2
9:28 am
0.031
<1
3
10:00am
0.01
<1
4
10:07 am
0.034
<1

Table 2 — Dye Study Results
Data Set
ID
Data Set Start
Time
Maximum Fluorometer
Reading (ppb)
MPN Equivalent
0
i -
520
13295
1
6:55 pm
5.92
151
2
9:28 am
0.031
<1
3
10:00 am
0.01
<1
4
10:07 am
0.034
<1
5
10:14 am
0.00
<1
6
10:44 am
0.032
<1
7
10:59 am
0.033
<1
8
11:11 am
0.015
<1
9
11:22 am
0.032
<1
10
11:50 am
0.095
2.4
11
12:08 pm
0.007
<1
12
12:14 pm
0.115
2.9
13
12:23 pm
0.034
<1
14
12:31 pm
0.065
1.7
15
12:38 pm
0.16
4.1
16
12:53 pm
0.208
5.3

makes recommendations for the next five years. Previously impaired Class SA waters are
discussed in Section 3.4 below. There were no other waters identified as impaired in the 1997
plan.
3.3 Status and Recommendations for Newly Impaired Waters
All waters in subbasin 03-05-03 are currently partially supporting (PS) on an evaluated basis for
the fish consumption use support category because of a statewide fish consumption advisory for
bowfin. Fish tissue samples were not collected in this subbasin. Twenty-five miles of Atlantic
coastline are currently partially supporting (PS) the fish consumption use support category
because of a consumption advisory for king mackerel. Refer to page 61 for more information on
this issue. piere are no other newly impaired waters in this subbasin. Class SA waters are
discussed below in Section 3.4.
3.4 Impaired Class SA Waters
There are 34,146 acres and 17.7 stream miles of Class SA waters in subbasin 03-05-03 that were
assessed in 4ie shellfish harvesting use support category. In this subbasin, 7,463 acres (22%) are
considered unpaired in the shellfish harvesting use support category. Refer to Figure B-6 to
identify locations of DEH SS growing areas and growing area classifications. Refer to page 49
for DEH SS growing area criteria. Data for making use support determinations were provided by
DEH SS (re er to page 40). The larger water areas in this subbasin are described below with
reference to DEH SS growingareas. The problem parameter for all waters listed below is fecal
P
coliform bacteria contamination. Refer to page 49 for recommendations to address impaired
Class SA waters.
The differences in acreage estimates between years are not necessarily related to changes in
water quality, but to different methods of estimating acreage and changes in use support
methodology. For more information on changes in use support methodology, refer to page 51.
Refer to Appendix III for use support methodology and a complete listing of individual
monitored NN)aters.
Bogue Sound and Tributaries (Areas D-4, E-1, E-2 and E-3)
There are 1,344 acres of Bogue Sound and tributaries including Spooner Creek, Broad Creek and
Money Island Bay that are not supporting shellfish harvesting. These areas are DEH SS
classified as prohibited/restricted and permanently closed to shellfish harvesting. Bogue Sound
adjacent to Jumping Run (367 acres) is also not supporting shellfish harvesting. This area is
DEH SS classified as conditionally approved -closed and was closed to shellfish harvesting most
of the assess ent period. The northern shoreline of Bogue Sound is experiencing rapid growth.
Emerald Isl , Cape Carteret and Atlantic Beach are continuing to grow as well. These areas have
very large s asonal populations and associated campgrounds and marinas. Bacterial water
quality conti ues to decline along the north shore of Bogue Sound. There are also 146 acres of
impaired ORW waters in the western portion of Bogue Sound. The Highway 24 causeway also
alters flow into Broad and Gales Creeks. Potential sources of pollution include runoff from
urbanized areas and subdivisions (NCDENR, 1999e; NCDENR, 1998e; and NCDENR, 1999c).
Section B: Chapter 3 — White Oak River Subbasin 03-05-03 89

North Carolina Coastal Federation has acquired buffers at Atlantic Beach (Hoop Hole Creek) to
permanently protect shellfish waters from development. Refer to page 105 for more information
on this project.
North Carolina Wetlands Restoration Program has a restoration project on 4.4 acres in the
Jumping Run Creek Watershed (refer to page 105) and a 2.8-acre shoreline stabilization and salt
marsh restoration at the Maritime Museum near Beaufort.
Newport River and Tributaries (Area E-4)
There are 1,606 acres of the Newport River and adjacent bays and tributaries extending to the
Atlantic Ocean including Harlowe Creek, Core Creek and Crab Point Bay that are not supporting
shellfish harvesting. These areas are DEH SS classified as prohibited/restricted and permanently
closed to shellfish harvesting. There are 1,380 acres of the Newport River, Harlowe Creek and
Core Creek that are also not supporting. These areas are DEH SS classified as conditionally
approved -closed and were closed to shellfish harvesting most of the assessment period. The
middle portion of the Newport River (2,763 acres) is rated partially supporting. This area is
DEH SS classified as conditionally approved -open and was closed to shellfish harvesting 11.7
percent of the five-year assessment period. The population of the area continues to grow around
Newport, Morehead City and Beaufort. There are many subdivisions in this subbasin as well.
Potential sources of pollution include runoff from urban areas and subdivisions as well as
agricultural and forestry land uses (DENR, 1998f).
Bogue Sound
▪ Approved D Conditionally Approved -Open
® Conditionally Approved -Closed ■ Prohibited/Restricted
Figure B-6 DEH Shellfish Growing Area Classifications in Subbasin 03-05-03
Section B: Chapter 3 — White Oak River Subbasin 03-05-03 90

White Oak River Basin Subbasin 03-05-03
Assessment
Waterbody and Description Unit (AU) Class Subbasin Use Listed Category and Reason for Listing
Impaired Year
Potential Source(s)
Miles or Acres
NEWPORT RIVER
21-(17)a
SA 03-05-03
5
17.7 S Acres
From Little Creek Swamp to DEH closure line
NEWPORT RIVER
21-(17)b
SA
SH 2002 5 Shellfish harvesting closure: Fecal
coliform
03-05-03 5
962.8 S Acres
From DEH closure line to DEH Conditionally Approved Closed line
NEWPORT RIVER 21-(17)c SA 03-05-03
SH 2002 5 Shellfish harvesting closure: Fecal
coliform
5
2,662.8 S Acres
From DEH Conditionally approved closed line to DEH Conditionally approved open
line extending from Penn Point to west mouth of Core Creek
NEWPORT RIVER 21-(17)e SA 03-05-03
SH 2002 5 Shellfish harvesting closure: Fecal
coliform
5
653.6 S Acres
DEH closed area north of Morehead City Harbor restricted area including Crap Point SH
Thorofare and Calico Creek Marsh to Hwy 70 Bridge.
NEWPORT RIVER
21-(17)f SA 03-05-03
2002 5 Shellfish harvesting closure: Fecal
coliform
7
220.4 S Acres
DEH closed area from Hwy 70 Bridge to a line extending form the south point of
Radio Island to Fort Macon including Morehead City Channel
NEWPORT RIVER
21-(17)g SA
03-05-03
SH 2002 7 Shellfish harvesting closure: Fecal
coliform
5
166.1 S Acres
DEH closed area around Gallant Point south to Hwy 70 Bridge including Beaufort
Channel
NEWPORT RIVER 21-(17)h SA 03-05-03
SH 2002 5 Shellfish harvesting closure: Fecal
coliform
7
188.4 S Acres
Deh closed area south of Hwy 70 Bridge and west of Pivers Island including
Bulkhead Channell
SH 2002 7 Shellfish harvesting closure: Fecal
coliform
Oyster Creek 21-23 SA 03-05-03 5
50.0 S Acres
From source to Newport River
SH 2002 5 Shellfish harvesting closure: Fecal
coliform
Russell Creek 21-26 SA 03-05-03 5
15.6 S Acres
From source to Newport River
DRAFT for PUBLIC REVIEW
SH 2002 5 Shellfish harvesting closure: Fecal
coliform
North Carolina 303(d) List- 2006 Tuesday, January 31, 2006
White Oak Basin 03-05-03 Page 109 of 126

Ambient Monitoring System Station
NCDENR, Division of Water
Basinwide Assessment
Location: NEWPORT RIV AT SR 1247 AT NEWPORT
Station #: P7300000 Subbasin: WOK03
Latitude: 34.78054 Longitude: -76.85971 Stream class: C
Agency: NCAMBNT NC stream index: 21-(1)
Time period: 09/01/1999 to 07/22/2004
# # Results not meeting EL Percentile
result ND EL # % 95% Min 10th 25th 50th 75th 90th Max
Field
D.O. (mg/L)
pH (SU)
Salinity (ppt)
Spec. conductance
(umhos/cm at 25°C) •
Water Temperature (°C)
Other
Chloride (mg/L)
TSS (mg/L)
Turbidity (NTU)
56 0 <4 13 23.2 Yes 1.2 3.3 4 4.9 7 8 8.8
56 0 <5 28 50 Yes 1.2 3.3 4 4.9 7 8 8.8
56 .0 <6 15 26.8 Yes 5 5.4 5.9 6.4 6.8 7.1 7.8
56 0 >9 0 0 5 5.4 5.9 6.4 6.8 7.1 7.8
55 18 N/A 0 0 0 0.2 0.2 0.43 2.9
56 0 N/A 56 80 96 146 240 834 5342
57 0 >32 0 0 4 7.6 12.1 19 23.2 24.6 27.9
1 0 >230 0 0 14 14 14 14 14 14 14
17 3 N/A 1 2 2 8 14 23 24
54 0 >50 0 0 1 2 5 7 14 22 27
Nutrients (mg/L)
NH3 as N 21 6 N/A 0.01 0.01 0.01 0.16 0.32 1 1.4
NO2 + NO3 as N 21 0 N/A 0.03 0.03 0.06 0.13 0.22 0.26 0.66
TKN as N 21 0 N/A 0.4 0.42 0.5 0.6 1.2 1.38 2
Total Phosphorus 21 0 N/A 0.02 0.02 0.03 0.05 0.07 0.1 0.14
Metals (ug/L)
Aluminum, tota (Al) 27 0 N/A 690 748 800 940 1100 1320 1400
Arsenic, total (As) 27 27 >10 0 0 10 10 10 10 10 10 50
Cadmium, total (Cd) 26 26 >2 0 0 2 2 2 2 2 2 2
Chromium, total (Cr) 26 26 >50 0 0 25 25 25 25 25 25 25
Copper, total (Cu) 27 21 >7 0 0 2 2 2 2 2 2 3
Iron, total (Fe) 1 27 0 >1000 14 51.9 Yes 620 696 830 1100 1400 1620 2000
Lead, total (Pb) 27 27 >25 0 0 10 10 10 10 10 10 10
Mercury, total (Hg) 27 27 >0.012 0 0 0.2 0.2 0.2 0.2 0.2 0.2 0.2
Nickel, total (Ni) 27 27 >88 0 0 10 10 10 10 10 10 10
Zinc, total (Zn) 27 15 >50 1 3.7 10 10 10 10 13 21 130
Fecal coliform (#/100mL)
# results: Geomean # > 400: % > 400: 95%:
57 174 7 12
Kev:
# result: number of observations
# ND: number of observations reported to be below detection level (non -detect)
EL: Evaluation Level; applicable numeric or narrative water quality standard or action level
Results not meeting EL: number and percentages of observations not meeting evaluation level
95% : States whether there is 95% statistical confidence that the actual percentage of exceedances is at least 10% (20% for Fecal Coliform)
Stations with less than 10 results for a given parameter were not evaluated for statistical confidence
NCDENR, Division of Water Quality
Ambient Monitoring System Report
White Oak River Basin - February 2005
AMS-67

Ambient Monitoring System Station
NCDENR, Division of Water
Basinwide Assessment
Location: NEWPORT RIV AT CM G1 AT NEWPORT MARSHES
Station #: P8700000 Subbasin: WOK03
Latitude: 34.73793 Longitude: -76.67825 Stream class: SA HQW
Agency: NCAMBNT NC stream index: 21-(17)
Time period: 10/26/1999 to 06/05/2002
Field
D.O. (mg/L)
pH (SU)
Salinity (ppt)
Spec. conductance
(umhos/cm at 25°C)
Water Temperature (°C)
Other
TSS (mg/L)
Turbidity (NTU)
Nutrients (mg/L)
NH3 as N
NO2 + NO3 as N
TKN as N
Total Phosphorus
Metals (ug/L),
Aluminum, total (Al)
Arsenic, total (As)
Cadmium, total (Cd)
Chromium, total (Cr)
Copper, total (Cu)
Iron, total (Fe)
Lead, total (Pb)
Mercury, total (Hg)
Nickel, total (NI)
Zinc, total (Zn)
# # Results not meeting EL Percentile.
result ND EL # % 95% Min 10th 25th 50th 75th 90th Max
27 0 <5 0 0 5.8 6.2 6.7 7.1 8.4 9.1 12.7
27 0 <6.8 0 0 7 7.1 7.6 7.9 7.9 8 8
27 0 >8.5 0 0 7 7.1 7.6 7.9 7.9 8 8
26 0 N/A 21.1 23.64 29.27 33.4 35.1 36.19 37.8
27 0 N/A 33650 37684 45540 50517 52440 54450 56770
27 0 >32 0 0 4 8.7 14 20 26 27.2 28.3
6 0 N/A 8 8 9 10 18 36 36
25 0 >25 0 0 2 2 2 3 5 7 7
18 6 N/A 0.01 0.01 0.02 0.06 0.18 0.36 0.5
18 14 N/A 0.01 0.01 0.01 0.01 0.1 0.19 0.5
16 1 N/A 0.2 0.2 0.29 0.4 0.5 1.12 1.4
18 4 N/A 0.01 0.02 0.02 0.03 0.05 0.23 0.5
14 0 N/A 120 130 208 330 485 810 900
15 15 >10 0 0 10 10 10 50 50 50 50
15 15 >5 0 0 2 2 2 10 10 10 10
15 15 >20 0 0 25 25 25 25 25 25 25
15 13 >3 2 13.3 No 2 2 2 2 2 5 6
15 0 N/A 76 81 130 180 350 508 520
15 15 >25 0 0 10 10 10 50 50 50 50
15 14 >0.025 1 6.7 0.2 0.2 0.2 0.2 0.2 0.4 0.7
15 15 >8.3 0 0 10 10 10 10 50 50 50
15 0 >86 1 6.7 12 18 25 32 58 91 120
Fecal coliform (#/100mL)
# results: Geomean # > 400: % > 400: 95%: Median # > 43 % > 43 95%
26 4 0 0 8 1 4
Kev:
# result: number of observations
# ND: number of observations reported to be below detection level (non -detect)
EL: Evaluation Level; applicable numeric or narrative water quality standard or action level
Results not meeting EL: number and percentages of observations not meeting evaluation level
95% : States whether there is 95% statistical confidence that the actual percentage of exceedances is at least 10% (20% for Fecal Colifomi)
Stations with less than 10 results for a given parameter were not evaluated for statistical confidence
NCDENR, Division of Water Quality
Ambient Monitoring System Report
White Oak River Basin - February 2005
AMS-68

Ambient Monitoring System Station Summaries
NCDENR, Division of Water Quality
Basinwide Assessment Report
Location: NEWPORT RIV AT SR 1247 AT NEWPORT
Station #: P7300000 Subbasin: WOK03
Latitude: 34.78054 Longitude: -76.85971 Stream class: C
Agency: NCAMBNT NC stream index: 21-(1)
Time period: 01/08/2002 to 12/05/2006
Field
D.O. (mg/L)
pH (SU)
Salinity (ppt)
Spec. conductance
(umhos/cm at 25°C)
# # Results not meeting EL Percentiles
result ND EL # % %Conf Min loth 25th 50th 75th 90th Max
59 0 <4 8 13.6 86.9 1.9 3.8 4.4 5.2 7.3 8.3 9.1
59 0 <5 27 45.8 100 1.9 3.8 4.4 5.2 7.3 8.3 9.1
59 0 <6 16 27.1 100 4.8 5.5 5.9 6.2 6.6 7.1 7.8
59 0 >9 0 0 4.8 5.5 5.9 6.2 6.6 7.1 7.8
59 1 N/A 0 0 0 0.04 0.1 0.3 1.4
58 0 N/A 56 68 93 118 184 513 2655
Water Temperature (°C) 59 0 >32 0 0 4 7.8 11.5 18.5 23.5 25.2 27.9
Other
TSS (mg/L) I 18 3 N/A 2.5 2.5 3.2 6.4 10.8 25.1 35
Turbidity (NTU) 58 0 >50 0 0 3 4.1 5.8 7.6 11 18.3 27
Metals (ug/L)
Aluminum, total (Al) 19 0 N/A 570 740 810 890 1000 1200 1300
Arsenic, total (As) 19 19 >10 0 0 5 5 5 10 10 10 10
Cadmium, total (Cd) 19 19 >2 0 0 2 2 2 2 2 2 2
Chromium, total (Cr) 19 19 >50 0 0 25 25 25 25 25 25 25
Copper, total (Cu) 19 16 >7 0 0 2 2 2 2 2 2 2
Iron, total (Fe) 19 0 >1000 12 63.2 100 620 650 700 1100 1400 1500 2300
Lead, total (Pb) 19 19 >25 0 0 10 10 10 10 10 10 10
Mercury, total (Hg) 19 19 >0.012 0 0 0.2 0.2 0.2 0.2 0.2 0.2 0.2
Nickel, total (Ni) • 19 19 >88 0 0 10 10 10 10 10 10 10
Zinc,total(Zn) 19 13 >50 0 0 10 10 10 10 12 17 21
Fecal conform (#/100mL)
# results: Geomean # > 400: % > 400: %Conf:
57 185 10 18
Kev:
# result: number of observations
# ND: number of observations reported to be below detection level (non -detect)
EL: Evaluation Level; applicable numeric or narrative water quality standard or action level
Results not meeting EL: number and percentages of observations not meeting evaluation level
%Conf : States the percent statistical confidence that the actual percentage of exceedances is at least 10% (20% for Fecal Coliform)
Stations with less than 10 results for a given parameter were not evaluated for statistical confidence

D'ye study - Newport
Subject: Dye study - Newport
From: Teresa Rodriguez <[e-mail]>
Date: Thu, 25 May 2006 12:57:29 -0400
To: patti.fowler@ncm il.net
Patti, Dawn Jeffrie left the division and I have now the project for the Newport expansion. I understand
that the dye study ill be done soon. Please let me know the results of the study or if it is possible I
would like to see a opy of the report.
Thanks,
Teresa
Teresa Rodriguez, P.E.
Division of Water Q ality
EAST NPDES Program
919-733-5083 ext. 5 3
1 of 1
5/25/2006 12:57 PM

oFWHjF,,,
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�1"1lILIr1 7
J(0'o dis-rS
Michael F. Easley, Govemor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
11 April 2006
TO: Melba McGee, DENR
FROM: Alex Marks, DW
SUBJECT: Scoping document — Newport WWTP, DWQ #13651, SCH #06-0275
The Division of Water Quality (DWQ) has reviewed the subject environmental document. This facility
currently has a tiered discharge permit for 0.5, 0.6, and 0.75 million gallons per day. Because of
capacity restrictions at the plant, they are currently operating under limits for 0.6 MGD. The proposed
improvements would allow the plant to operate under its full permitted flow of 0.75 MGD.
Since the flow is already permitted, the town will not need to submit an EAA to DWQ's NPDES Unit
for this expansion. The plant is authorized to discharge flows of 0.75 MGD upon receipt of an
Authorization to Construct from DWQ's Construction Grants and Loans Section, and submittal of an
Engineers Certification that the work has been completed.
Thank you for the opportunity to comment. Please contact Toya Fields in DWQ's NPDES Unit
at [phone] ext. 551 should you have any questions.
No One
aturally
North Carolina Division of Water Quality/Planning Branch 1617 Mail Service Center Raleigh, NC 27699-1617 Phone [phone]
http//www.h2o.enr.state.nc.us 512 North Salisbury St. Raleigh, NC 27604 FAX [phone]
DENR Customer Service 1-877-623-6748 An Equal Opportunity/Affirmative Action Employer

Department of Environment and Natural Resources
Office of Legislative and Intergovernmental Affairs
Project Review Form
Project Number: 06-0275 County: Carteret
Due Date: 04/10/2006
Project Description: Town of Newport proposal to upgrade and'expand their waste water treatment plant
This Project is being reviewed as indicated below:
Regional Office
Asheville
Fayetteville
Mooresville
Raleigh
Washington
Wilmington
Winston-Salem
Regional Office Area
ge�ze ui�ke L-
TT Air
�- Water
n Groundwater
_Li_ Land Quality Engineer
In -House Review
Soil & Water
Coastal Management
Wildlife
Wildlife - DOT
Forest Resources
Land Resources
Parks & Recreation
_EL Water Quality
Water Quality - DOT
• Air Quality
Date Received: 03/15/2006
0-
11.
Marine Fisheries
Water Resources
Environmental Health
Solid Waste Mgmt
Radiation Protection
Other
Manager Sign-Off/Region:
Date:
41lof a6
In -House Reviewer/Agency:
A-Ney,_--
Response (check all applicable)
No objection to project as proposed.
Insufficient information to complete review x Other (specify or attach comments)
No Comment
Regional Office Only:
Please log into the IBEAM system and update your comments in the DSS (Decision Support System) application,
SEPA module. If you have any questions, please contact:
Melba McGee, Environmental Coordinator at [e-mail]

Newport WWTP Dye Study
Subject: Newport WWTP Dye Study
Date: Wed, 08 Mar 2006 16:34:54 -0500
From: Patti Fowler <[e-mail]>
To: Dawn Jeffries <[e-mail]>
CC: Gil Vinzani <[e-mail]>, Wayne Mobley <[e-mail]>
Dawn,
Just wanted to let yoi know that the dye study for the Newport Treatment
Plant proposed increase in flow has been delayed. We were ready to do
the dye study tomorrow March 9th but unfortunately the plant operator
has begun repairs on he system and has taken down the flow meter. We
cannot do the study without the flow meter in place. Our projected date
now to do the study will be sometime in April depending on the tide.
This is unfortunate that the plant did not inform us of this repair. We
were set to go tomorrow. It takes a number of our staff to do a dye
study and this will also be a factor in our rescheduling.
Patti
NcD
1 of 1 3/10/2006 10:18 AM

o\-\ w A r9p6
H
Mr. David Upchurch
Hobbs, Upchurch & Associates, P.A.
P. O. Box 1737
300 S.W. Broad Sxreet
Southern Pines, rth Carolina 28388
Dear Mr. Upchurch:
Michael F. Easley, Govemor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E., Director
Division of Water Quality
August 17, 2005
Subject: Speculative Effluent Limits Request
Town of Newport WWTP Expansion
Permit NC0021555
Carteret County
This letter is in response to your July 27, 2005 request for speculative effluent limits for an expansion of the
existing Newport wastewater treatment plant in Carteret County. The request includes 2.0 MGD, 3.0 MGD, and
4.0 MGD flows at the current location.
The receiving water for this discharge is the Newport River, about 7.4 miles upstream of SA -classified waters.
The downstream waters are listed as impaired on the North Carolina Impaired Waters List due to fecal coliform,
and the Division of Water Quality (DWQ) is in the process of developing a Total Maximum Daily Load
(TMDL) for fecal coliform for the Newport River and its tributaries. In addition, these SA waters are closed for
shellfishing. The question of primary concern in this request is whether or not expansions of this size at this
location would negatively impact the shellfishing areas downstream of the discharge.
The Division of Environmental Health can determine if the proposed increase in flow would affect the shellfish
closure line approximately 9 miles downstream. If it is determined that expansion would not affect the present
location of the permanent closure line in the upper Newport River, DWQ could then determine speculative
limits. Because DWQ would have to develop a model for the Newport River in order to determine the
speculative limits,, you should expect the process to take six months.
In order to determine the feasibility of the proposed discharge, please contact Patricia Fowler or J.D. Potts of the
Shellfish Sanitation Section of the Division of Environmental Health in Morehead City at [phone]. The
mailing address for this office is Shellfish Sanitation Section, Marine Fisheries Building, P.O. Box 769,
Morehead City, NC 28577-0769.
Should you have any questions, please feel free to contact Dawn Jeffries at [phone], extension 595.
Sincerely,
/t
J44/7444-
Gil Vinzani, P.E.
Supervisor, Eastern NPDES Program
cc: Wilmington Regional Office
Shellfish Sanitation Section, Marine Fisheries Building, P.O. Box 769 Morehead City, NC 28557-0769
Central Files
NPDES Files
Modeling/TMDL Unit, Attn: Michelle Woolfolk
Town of Newport, P.O. Box 1869 Newport, NC 28570, Attn: Mr. Clay Dulaney
N. C. Division of Water Quality 1617 Mail Service Center
Raleigh, NC 27699-1617 [phone]

plj Hobbs, Upchurch & Associates, P.A.
Consulting Engineers
300 S.W. Broad Street • Post Office Box 1737 • Southern Pines, NC 28388
July 27, 2005
Mr. Dave Goodrich
NPDES Permit Group
Division of Water Quality
512 North Salisbury Street, Archdale Building
Raleigh, NC 27626
Re: Speculative Limits
Town of Newport, N.C. WWTP
NPDES Permit No. NC0021555
Carteret County, NC
Dear Mr. Goodrich:
L' 1 Q U L5 ii
1L JUL 29 2005
GEAR - WATER OUALITY
POINT SOURCE BRANCH
We are writing on behalf of the Town of Newport to request speculative discharge limits for a
new Wastewater Treatment. Plant. The current discharge is to the Newport River and is permitted
at 0.6 mgd. Newport is experiencing excessive unexpected growth due to build out of the
surrounding areas and expansion of local military bases.
Newport recognizes the immediate need and are planning for current and future growth of their
system. Newport is considering an ICEAS type process with continuous backwash filtration and
ultra violet disinfection. S82
This letter shall serve as a formal request for speculative discharge limits at 2.0 mgd, 3.0 mgd
and 4.0 mgd.
Q+nrnratz
HOBBS, UPCHURCH & ASSOCIATES, P.A.
David T. Upchurch
Vice President
cc: Town of Newport, Clay Dulaney
Wilmington Regional Office
HUA # NW0101/300/NPDES
Southern Pines, NC • Telephone [phone] • Fax [phone] • e-mail: [e-mail]
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