NC0020842_permit issuance_19980325

WDES DOCUWEMT SCANNIM6 COVER SHEET
NPDES Permit:
NC0020842
Snow Hill WWTP
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Speculative Limits
Correspondence
Instream Assessment (67B)
Environmental Assessment (EA)
Permit
History
Document Date:
March 25, 1998
Tlzits document is printed on reuse paper - ignore any
content on t1be reverse side

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Wayne McDevitt, Secretary
A. Preston Howard, Jr., P.E., Director
March 25. 1998
Mayor R. Ben Rayford
Town of Snow Hill
110 S.E. First Street
Snow Hill, North Carolina 28580
L4fe J
Admbmdmbmdw
D E
Subject: Issuance of NPDES Permit NCO020842
Snow Hill WWTP
Greene County
Dear Mayor Rayford:
In accordance with your application dated June 6, 1996, the Division is forwarding the subject
State-NPDES permit. This permit is issued pursuant to the requirements of North Carolina
General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and the
U. S. Environmental Protection Agency dated December 6, 1983.
Monitoring requirements for Total Nitrogen and Total Phosphorus have been incorporated into
the final permit. The effluent limitations and monitoring requirements for the facility have been
divided into three separate pages to incorporate the appropriate nutrient limits. Effluent monitoring
page A.(1). has been revised to include nutrient monitoring requirements. This action is a result
of the rule supporting the Neuse River Basin Nutrient Sensitive Waters Management Strategy,
recently adopted by the Environmental Management Commission. Special conditions A.(4).and
A.(5) have been added to the permit renewal to guide you through the revised monitoring
requirements and load calculations.
Effluent monitoring page A.(2). has been revised to include the following nutrient limit for the
expanded flow:
• Total Nitrogen (NO2 + NOs + TKN) = 22.9 lbs/day (annual average mass basis)
These limits were incorporated because the Legislature recently passed House Bill 515 which
mandates nutrient limits for facilities that discharge into waters of the state classified as nutrient
sensitive waters (NSW). These limits will become effective upon expansion to 0.5 MGD and will
last until January 1, 2003.
After January 1, 2003 and upon expansion to 0.5 MGD, the monitoring requirements for Total
Nitrogen and Total Phosphorus will change. Effluent monitoring page A.(3). has been developed
to include the revised nutrient limits. Once again, this action is a result of the rule supporting the
Neuse River Basin Nutrient Sensitive Waters Management Strategy, recently adopted by the
Environmental Management Commission. Special conditions A.(4).and A.(5) have been added
to the permit renewal to guide you through the revised monitoring requirements and load
calculations.
If any parts, measurement frequencies or sampling requirements contained in this permit are
unacceptable to you, you have the right to an adjudicator), hearing upon written request within
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50 % recycled/ 10% post -consumer paper

Issuance of NPDES Permit NC0020842
Snow Hill WWTP
Page 2 of 2
thirty (30) days following receipt of this letter. This request must be in the form of a written
petition, conforming to Chapter 150B of the North Carolina General Statutes, and filed with the
Office of Administrative Hearings, Post Office Drawer 27447, Raleigh, North Carolina 27611-
7447. Unless such demand is made, this decision shall be final and binding.
Please take notice that this permit is not transferable. Part fl, EA. addresses the requirements
to be followed in case of change in ownership or control of this discharge.
This permit does not affect the legal requirement to obtain other permits which may be required
by the Division of Environmental Management or permits required by the Division of Land
Resources, Coastal Area Management Act or any other Federal or Local governmental permit that
may be required.
If you have any questions concerning this permit, please contact Jeff Myhra at telephone
number 919/733-5083, ext. 597.
Sincerely,
Original Signed By
A. Preston Howard, Jr.
A. Preston Howard, Jr., P.E.
cc: Central Files
Mr. Roosevelt Childress, EPA
Washington Regional Office / Water Quality Section
Point Source Compliance Enforcement Unit
(NPDES Unit / Peanit file)
t

Permit No. NCO020842
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended,
Town of Snow Hill
is hereby authorized to discharge wastewater from a facility located at the
Snow Hill WWTP
201 North Greene Street
Snow Hill
Greene County
to receiving waters designated as Contentnea Creek in the Neuse River Basin
in.accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I,
I1, III, and IV hereof.
The permit shall become effective June 1, 1998
This permit and the authorization to discharge shall expire at midnight on May 31, 2003
Signed this day March 25, 1998
Original Signed cy
A. Preston Howard, Jr.
A. Preston Howard; Jr., P.E., Director
Division'of Water. Quality
By Authority of the Environmental Management Commission

SUPPLEMENT TO PERMIT COVER SHEET
Snow Hill WWTP
is hereby authorized to:
Permit No. NC0020842
Continue to operate an existing 0.25 MGD dual contact stabilization wastewater treatment
facility consisting of a bar screen, contact chamber, reaeration chamber, clarifier, chlorine
contact chamber, aerobic sludge digester and sludge drying beds located at Snow Hill
WWTP, 201 North Greene Street, Snow Hill, Greene County (See Part III of this permit),
and
Discharge from said treatment works at the location specified on the attached map into
Contentnea Creek which is classified C-Swamp-NSW waters in the Neuse River Basin, and
After receiving an Authorization to Construct from the Division of Water Quality, expand the
existing wastewater treatment facility to 0.500 MGD.

ROAD CLASSIFICATION
PRIMARY HIGHWAY LIGHT -DUTY ROAD. HARD OR
HARD SURFACE IMPROVED SURFACE
SECONDARY HIGHWAY
HARD SURFACE C=:Nm= UNIMPROVED ROAD
Latitude: 35027'20"
Longitude- 77039-29"
Map # F28NW
Sub -basin: 03-04-07
Stream Class:
C-Swamo NSW
Discharge Class:
01 55
Receiving Stream:
Contentnea Creek
Permit expires: 02/28/99 Ow 0.5 MGD
9e PQ n °'t'rF�
sewage f yx T
�1Spp58i — q
SCALE 1:24 000
0 1 MILE
0 7000 FEET
1 0 1 KILOMETER
CONTOUR INTERVAL 2 METERS
QUAD LOCATION Town of Snow Hill
NCO020842
Greene County
WWTP

A (1). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL Permit No. NC0020842
During the period beginning on the effective date of the permit and lasting until expansion above 0.25 MGD, the Permittee is authorized to discharge from
outfall serial number 001. Such discharges shall be limited and monitored by the Permittee as specified below:
EFFLUENT CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample
T e
Sample
Location'
Flow
0.25 MGD
Continuous
Recordinq
I or E
BOD, 5 day, 20°C2
30.0 m / 1
45.0 m / I
Weekly
Composite
E, I
Total Suspended Residuez
30.0 m / 1
45.0 m / I
Weekly
Composite
E, I
NH3 as N
Weekly
Composite
E
Dissolved OxVqen
Weekly
Grab
E, U, D
H3
Weekly
Grab
E
Fecal Coliform(geometric mean
200 / 100 ml
400 / 100 ml
Weekly
Grab
E, U, D
Total Residual Chlorine
2 / Week
Grab
E
Total Nitrogen (NO2+NO3+TKN)4
Monthly
Composite
E
Total Nitrogen (NO2+NO3+TKN)4
Monthly
Calculated
E
Total Nitrogen (NO2+NO3+TKN)4
Annually
Calculated
E
Total Phosphorus
Quarterly
Composite
E
Temperature °C
Weekl
Grab
U, D
Temperature °C
Dail
Grab
E
Conductivity
Weekly
Grab
U, D
Notes:
Sample locations: E - Effluent, I - Influent, U - Upstream at US 13/258, D - Downstream at Highway 123.
Instream samples shall be collected 3/week during the months of June through September and once per week during the remaining months of the year. All
sites involved in the collaborative effort between Snow Hill, Hookerton, and Maury Sanitary need to be sampled on the same day.
2 The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15 percent of the respective influent value
(85 percent removal).
3 The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
4 See Special Condition A.(4). on the Supplement to Effluent Limitations and Monitoring Requirements Page.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Special permit conditions applicable to the subject facility are listed on the Supplement to Effluent Limitations and Monitoring Requirements Page - Special
Conditions.

A (2). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL Permit No. NC0020842
During the period beginning upon expansion above 0.25 MGD and lasting until January 1, 2003, the Permittee is authorized to discharge from outfall serial number
001. Such discharges shall be limited and monitored by the Permittee as specified below:
EFFLUENT CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Annual
Average
Weekly
Average
Daily
Maximum
Measurement
Fre uenc
Sample
T e
Sample
Location'
ow
0.50 MGD
Continuous
Recording
I or E
4ilOD, 5 day, 20°C (April 1 - October 31)2
15.0 m /I
22.5 m /I
Weekly
Composite
E, I
D, 5 day, 20°C November 1 - March 31)2
30.0 m /I
45.0 m /I
Weekly
Composite
E, I
tal Suspended Residue2
30.0 m /I
45.0 m /I
Weekly
Composite
E, I
H3 as N (April 1 - October 31)
4.0 mg/I
Weekly
Composite
E
H3 as N (November 1 - March 31)
8.0 mg/I
Weekly
Composite
E
issolved Oxygen3
Weekly
Grab
E, U, D
H4
Weekly
Grab
E
cal Coliform, eometric mean
200 / 100 ml
400 / 100 ml
Weekly
Grab
E, U, D
tal Residual Chlorine
28 /I
2/Week
Grab
E
Total Nitrogen (NO2+ NO3+TKN)
22.9 Ibs/day
Weekly
Composite
E
Total Phosphorus
2.0 m /I(quarterly average)
Weekly
Composite
E
-Temperature °C
Daily
Grab
E
em erature °C
Weekl
Grab
U, D
ConductivityWeekl
Grab
E, U, D
Notes:
Sample locations: E - Effluent, I - Influent, U - Upstream at US 13/258, D - Downstream at Highway 123.
Instream samples shall be collected 3/week during the months of June through September and once per week during the remaining months of the year. All
sites involved in the collaborative effort between Snow Hill, Hookerton, and Maury Sanitary need to be sampled on the same day.
2 The monthly average effluent BODs and Total Suspended Residue concentrations shall not exceed 15 percent of the respective influent value
(85 percent removal).
3 The daily average dissolved oxygen effluent concentration shall no be less than 5.0 mg/I.
4 The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
There shall be no discharge of floating solids or visible foam in other than trace amounts.

A (3). EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS FINAL Permit No. NC0020842
During the period beginning upon expansion above 0.25 MGD and after January 1, 2003, the Permittee is authorized to discharge from outfall serial number 001. This
permit shall be effective until expiration on May 31, 2003. Such discharges shall be limited,and monitored by the Permittee as specified below:
EFFLUENT CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Average
Annual
Average
Weekly
Average
Daily
Maximum
Measurement
Fre uenc
Sample
T e
Sample
Location]
-Flow
0.50 MGD
Continuous
Recording
I or E
OD, 5 day, 20°C (April 1 - October 31 2
15.0 m /I
22.5 m /I
Weekly
Composite
E,
-BOD, 5 day, 20°C November 1 - March 31 2
30.0 m /I
45.0 m /I
Weekly
Composite
E, I
Total Suspended Residue2
30.0 m /I
45.0 m /I
Weekly
Composite
E, I
H3 as N (April 1 - October 31)
4.0 mg/I
Weekly
Composite
E
H3 as N (November 1 - March 31)
8.0 mg/I
Weekly
Composite
E
ssolved Oxygen,3
Weekly
Grab
E, U, D
H4
Weekly
Grab
E
-FPecal Coliform(geometric mean
200 / 100 ml
1 400 / 100 ml
Weekly
Grab
E, U, D
Total Residual Chlorine
28 I
2/Week
Grab
E
.Total Nitrogen(NO2+NO3+TKN)5
Weekly
Composite
E
tal Nitrogen (NO2+NO3+TKN)5
Monthly
Calculated
E
-Total Nitrogen (NO2+ NO3+TKN)5
5,640lb/yr (annual mass load)
Annually
Calculated
E
Total Phos horuss
2.0 m /I(quarterly avera a
Weekly
Composite
E
-Temperature °C
Dail
Grab
E
-Temperature °C
Weekl
Grab
U, D
Conductivity
Weekly
Grab
E, U, D
Notes:
Sample locations: E - Effluent, I - Influent, U - Upstream at US 13/258, D - Downstream at Highway 123.
Instream samples shall be collected 3/week during the months of June through September and once per week during the remaining months of the year. All sites
involved in the collaborative effort between Snow Hill, Hookerton, and Maury Sanitary need to be sampled on the same day.
2 The monthly average effluent BOD5 and Total Suspended Residue concentrations shall not exceed 15 percent of the respective influent value
(85 percent removal).
3 The daily average dissolved oxygen effluent concentration shall no be less than 5.0 mg/I.
4 The pH shall not be less than 6.0 standard units nor greater than 9.0 standard units.
5 See Special Conditions A.(4). and A.(5). on the Supplement to Effluent Limitations and Monitoring Requirements Page.
The quarterly average for phosphorus shall be the average of composite samples collected weekly during the most recent three months.
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Special permit conditions applicable to the subject facility are listed on the Supplement to Effluent Limitations and Monitoring Requirements Page - Special Conditions.

Permit No. NC0020842
SUPPLEMENT TO EFFLUENT LIMITATIONS
AND MONITORING REQUIREMENTS
SPECIAL CONDITIONS
A.(4). TOTAL NITROGEN MONITORING
The Permittee shall calculate annual total nitrogen mass loading as the sum of monthly loadings,
according to the following equations:
(1) Monthly Loading (lb) = Days x TN x QW x 8.34
where:
Days = the number of days of discharge in that month
TN = the average total nitrogen concentration (mg/l) of the composite samples
collected during the month
Qw = the average daily waste flow (MGD) for the month
8.34 = conversion factor, from (mg/1 x MGD) to pounds
The annual mass loading is the sum of the monthly loadings:
(2) Annual Mass Loading (lb/yr)= E (Weekly Loadings) for the calendar year
The Pemuttee shall report the total nitrogen concentration for each sample and the monthly mass
loading, in the appropriate monthly self -monitoring report; and the annual total nitrogen mass
loading, in the self -monitoring report for December of each year.
A.(5),. LIMITS FOR ANNUAL TOTAL NITROGEN
(a) The Neuse Strategy (t) provides that mass limits for annual total nitrogen shall be included
in the permits for all dischargers with permitted flows (as defined in the Strategy) greater
than or equal to 0.5 MGD. Those mass nitrogen limits, including the limits in this permit,
shall become effective on January 1, 2003.
Footnote:
(1) Neuse River Basin - Nutrient Sensitive Waters Management Strategy: Wastewater discharge
Requirements (15A NCAC 2B. 0234), adopted December 11, 1997 by the Environmental
Management Commission.

DIVISION OF WATER QUALITY
September 29, 1997
uL UMMMY9 u1
To: Preston Howard /
From: Kent Wiggins
Subject: Hearing Officer Report on the Town of Snow Hill
On July 8, 1997, I served as the hearing officer for the pending permit for the
Town of Snow Hill. Several people spoke at the hearing. In general, the comments were
positive except for those from the Neuse River Foundation (NRF) President and Rick
Dove, who was there not as a representative of the Neuse River Foundation. The negative
comments were regarding their concerns that the draft permit did not go far enough in
reducing nutrient loadings. Concerns were also expressed about the lack of permit limits
for nutrients in the draft permit. Another individual questioned the cost of increasing the
percent removal of nutrients, but was mainly at the meeting to learn more about the
situation.
I have reviewed the comments and have had several meetings with permitting
staff in an effort to understand the circumstances surrounding the requirements of the
draft permit. Since the hearing was held, House Bill 515 has been passed by the N. C.
General Assembly with requirements that, in my opinion apply to this decision. The
statute requires a limit of 5.5 mg/I for Total Nitrogen and 2.0 mg/1 for Total Phosphorus
for facilities discharging to NSW waters. The facility meets the applicability conditions
and therefore I am recommending that these limits be included in the permit, under the
condition that they do not apply until the facility completes the planned upgrade and
expansion. Since these limits are, at least in the case of Total Nitrogen, new or more
stringent limits, a compliance schedule can be included in the permit. The draft permit
already contains a schedule for Total Phosphorus.
The schedule will allow the town a grace period to construct sufficient facilities to
comply with the new limits. The town mayor and treatment plant operators seemed very
sincere in their intent to improve their plant and meet the proposed nutrient requirements.
This schedule will give them a definite goal to work toward.
With the exception of the limits for nutrients, I recommend that the permit be
issued as drafted. The reopener clause would still be necessary if changes have to be
made as a result of any Association agreements. It appears at this point that we would
now be requiring the town to plan for the worst case, with the possibility of some
relaxation if the Association's agreement allows for it.
The file on the permit is attached to this memo. If you have questions or need
further clarification, please contact me at 733-5083, Ext. 521.
cc: Steve Tedder lwwf
Dave Goodrich / ow

NORTH CAROLINA. )s$
LENOIR COUNTY— ll
The
and
ipublic
ENOIR'COUNTY:j'"rya '
Eq
DI IRI In MEETING.
'-7* NORTH�CAROirINA.
j:hENVIRONMENTAL-..
'.t'`MANAGEMENT'
' �'r ""COMMISSION-'
SUBJECT:,`$;public. meet-''
ing:has.been sc.h.., .d._con-1
kerning the issuance'of State
-NPDES ,..Permit NO.
NC0020842,to the Town of
Snow HiWl 110 East First
Street,"Snow Hill. North Caro-
Iina285807for`a.fa76ility located
at.Snow Hill Wastewater
ty..T1
tour
0.5; I
wa`s
into
Cla:
i n't
reek,: a
n of
'or a
i OFFICE
Before the undersigned, a Notary Public of said County and
State, duly commissioned, qualified, and authorized by law to ad-
minister oaths, personally appeared
Laura P. Dupree
who being first duly sworn, deposes and says:
that 'M (she) is Bookkeeper of
Kinston Free Press Co., Inc.
engaged in the publication of a newspaper known as
Kinston Daily Free Press
published, issued, and entered as second class mail in the City of
Kinston, in said County and State; that hX (she) is authorized to
make this affidavit and sworn statement; that the notice or other
legal advertisement, a true copy of which is attached hereto, was
published in
Kinston Daily Free Press
on the following dates:
May 28, 1997
and that the said newspaper in which such notice, paper, document
.j 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
the books Carolina and was a qualified newspaper within the meaning of
ation and Section 1-597 of the General Statutes of North Carolina.
`for,which the;permit.is:_re-
qulred by the'apPlleanC' - .. .
;`A 3. Public -Comment - COnI-
�.e.omnnta. data.and.
13 th ..... day of ... June ............ 19 ..9.7 .... .
This ......... ,o
13th
Sworn to and subscribed before me, this
.....................
June-
dayof ............ ..............
(� Q�Q.C�
Notary Public
My Commission Expires flay 1, 1999
My commission expires: - ........................

uest.
.MEETING PURPOSE:7,T'h`e I,)
eating will be conducted,iA, I
91 follakiig
*EX I
agement
Sworn to and subscribed before me, this ...............13th...... . ..
day of .. ........ ... June
..... — ........ I .... ........ 19 .9.7.
\:v . L'j Q"a"
.............. .......
Notary Public
My Commission Expires May 1, 1999
bly commission expires: 7. ............. .......................

NORTH CAROLINA
GREENE COUNTY
AFFIDAVIT OF PUBLICATION
Before the undersigned, a Notary Public of said County and State, duly
commissfoned,qu.ifiad a{ldputhorizedbylawtoadministeroaths,person-
ally appeared .�, B7who being duly Sworn, deposes and says:
that he a representative of the publisher, engage In the publication of a
newspaper known as THE STANDARD LACONIC, published, Issued and
entered as second class mail In the city of Snow Hill In Greene County, North
Carolina; that he Is authorized to make this affidavit and Sworn statement;
that the notice or other legal advertisement, a true copy of which Is attached
hereto, published In THE STANDARD LACONIC, on the following dates:
and that the said newspaper in which such notice, paper, document or legal
advertisement was published was, at the time of each and every such
publication, a newspaper meeting all the requirements and qualifications of
Sec:lcn 1-597 of the General Statues of North Carolina and was a qualified
newspaper within the meaning of Section 1-597 of the General Statues of
North Carolina.
This l—day
19�
(Signature of person making affidavit)
Sworn to and subscribed before me, this day of ! L Lc
19 2/.7
Notary Public
V
ply calnf ljsSioil
My Commission expires: -
_ PUBLIC NOTICE.
�- A_copy 'of the Wilson -
Greene MH/DD/SAS bud-
getordinance for fiscal year
97/98 is available for public
inspection and will be pre-,
sented to the Wilson -
Greene MH/DD/SAS Area.
. Board on Tuesday, Junel
17,1997, at 5:30 p. m. in the I
Main Center Conferences
Room located on 1709 S.i
Tarboro Street, Wilson, NC.;
Notice of public meeting
to be held by the North
Carolina Environmental
Management Commission
A public meeting has
been scheduled concem-
ing the issuance of State
NPDES Permit No.
NCO020842 to the Town of
Snow Hill, 110 Fa<1 First
Street, Snow Hill, North
Carolina 28580 fora facility
located at Snow Hill Waste-
water Treatment Plant, 201
North Greene - Street,
Greene County. The facil-
ity has requested to in-
crease its discharge to 0.5
MGD of treated domestic
wastewater from one out -
fall into Contentnea Creek,
a Class C-Swamp-NSW
stream in the Neuse River
Basin, which has a 7010
flow of 31.4 its.
The Town of Snow Hill
has applied for permit
modification for the dis-
charge described above.
On the basis of preliminary
staff reviewand application
of Article 21 of Chapter 143,
General Statutes of North
Carolina, and other lawful
standards and regulations,
the North Carolina Environ-
mental Management Com-
mission proposes to issue
a State-NPDES permit sub-
ject to specific pollutant limi-
tations and special condi-
tions. The Director of the
Division of Water Quality
pursuant to NCGS 143-215.
1(c) (3) public interest that
a meeting be held to re-
ceive all pertinent public
comment on whether to is-
sue or deny the modifica- I
Lion request.
The meeting will be con-
ducted in the following man-
ner:
1. Explanation of the
North Carolina Enwron- '
mental Management
Commission's Permit Pro- '
cedure by the Division of
Water Quality.
2. Explanation of the
action for which the permit
is required by the applicant.
3. +Public Comment -
Comments, statements,
data and other information
may be submitted in writing
prior to or during the meet-
ing or may be presented
orally at the meeting. Per-
sons desiring to speak will
indicate 4his intent at the
time of registration at the
meeting. So that all per-
sons desiring to speak may
do so, lengthy statements
I may be limited at the dis-
cretion of the meeting of-
ficer. Oral presentations
which exceed three min-/
utes must be accompanied
1 by three (3) written copies
which will be filed with the
i meeting clerk at the timeof
registration.
4. Cross examination of
persons presenting testi-
mony will not be allowed;
however, the meeting of -
fiber may ask questions for
clarification.
5. The meeting record
will beclosedattheconclu-
sion of the meeting.
I. It will be held on Tues-
day, July 8 at7:00 p.m. at
the Greene County Com-
plex, 229.Kingold Boule-
vard, Snow Hill, North Care -
line.
A copy of the draft
N PDES permit and a sketch
showing the location of the
discharge is available by
writing or calling: .
Jeffery T. Myhra, E.I.T.
NC DEHNR / DWO /
NPDES Group
P.O. Box 29535
Raleigh, North Carolina
27626-0535
Telephone number:
[phone] extension
597
The application and other
information is on file at the
Division of :"rater Quality,
512 North Salisbury Street,
Room 925, Archdale Build-
ing, Raleigh, North Caro-
lina and at the Washington
Regional Office, 1424 Caro-
lina Avenue, Washington,
North Carolina 27889. They
may be inspected during
normal office hours. Cop-
ies of the information is
available upon request and
payment of the costs of re-
production. All such com-
ments and requests regard-
ing this matter should make
reference to application
number NC0020842.
A. Preston Howard, Jr..
Director
Division of Water Quality
6/4/chrg.

Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Stream Classification:
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Topo Quad:
FACT SHEET FOR WASTELOAD ALLOCATION
Request # 8497
Town of Snow Hill Wastewater Treatment Plant
NCO020842
Domestic - 100%
Existing
Expansion
Stream Characteristic:
Contentnea Creek
USGS #
C - Swamp - NSW
Date:
03-04-07
Drainage Area (miz):
703
Greene
Summer 7Q10 (cfs):
31.4
Washington
Winter 7Q10 (cfs):
57.7
Myhra
Average Flow (cfs):
844
7 / 23 / 96
30Q2 (cfs):
F 28 NW
IWC (%):
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
WASH NGTOINM
OFFICE
AUG 1 5 1996
A&M.
Instream monitoring needs to be on same day at all sites - done in 1995, but not in 1994
This Fact Sheet contains language for the Neuse River Interim NSW strategy. No specific limits can be
incorporated into the permit at this time as this plan is still in a draft stage and under review. Once a
document is finalized, specific language and/or limits will be incorporated into this permit.
.The limits for the increased flow from 0.250 mgd to 0.500 mgd are based upon comparable loading for the)
expanded flow and minimum treatment capabilities. Contentnea Creek has documented low DO's (down
to 4 mg/l and occasionally lower), and the Instream Assessment Unit is currently evaluating methods for
determining impacts to this system. A calibrated model of Contentnea Creek is under review, (the current_ "
steady-state model may not portray this system) and could affect future allocations.
Special Schedule Requirements and additional comments from Reviewers: `=
�c
s.
Y' s 4... /.( .4 ._..../.'.C•.« .d z «. u, tb�f T f- r-1 �l
/ArG
n
r
Recommended-b-y `� —' Date: 9 Al051, 1194
Farrell Keoug P.T
In stream A ssessmen tab Date:
VYRegional Supervisor: Date: 711//79
Permits & Engineering: Date:
RETURN TO TECHNICAL SUPPORT BY: SEp 10 1996

'::: ul UW
Existing Limits:
Monthly Average
Summer
Winter
Wasteflow (MGD):
0.250
0.250
BOD5 (mg/1):
30
30
NH3N (mg/1):
monitor
monitor
DO (mg/1):
-
-
TSS (mg/l):
30
30
Fecal Coliform (/100 ml):
200
200
pH (SU):
6-9
6-9
Residual Chlorine (µg/l):
monitor
monitor
Oil & Grease (mg/l):
Total Phosphorus (mg/1):
monitor
monitor
Total Nitrogen (mg/1):
monitor
monitor
Temperature (°C):
monitor
monitor
There shall be no discharge of floating solids or visible
foam in other than trace amounts.
Recommended Limits:
Monthly Average
Summer Winter
Wasteflow (MGD):
0.500 0.500
BOD5 (mg/1):
15— 22.5 30
NH3N (mg/1):
4- Nv new. 8
DO (mg/1):
No m" 5
TSS (mg/1):
30- 4S 30
Fecal Coliform (/100 ml):
200 - ypn 200
pH (SO):
6-9-A5es 6-9
Residual Chlorine (µg/1):
28- MA� 28
Oil & Grease (mg/1):
- �,Q4t L-V max. -
Total Phosphorus (mg/1):
refer section below on
Total Nitrogen (mg/l):
Proposed Neuse Interim NSW Strategy
Temperature (°C):
monitor monitor
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Association Member f
Expanding Facility (>_ 0.5 mgd)
Non -Association Member
New & Expanding Domestic /
Municipal Facility
No Association Formed
New & Expanding Domestic /
Municipal Facility
Total Phosphorus Total Nitrogen
2 mg/1 *�Ic Association
1 mg/1 ** 6 mg/l **
1 mg/1 ** 6 mg/1 **
1 All wastewater dischargers below Falls Lake Dam will have the option of forming an
association to reduce nutrients through a trading program as an agreement with the Division.
_*'Quarterly -Average -Limits
** Monthly Average L
_x_ Parameter(s) are water quality limited. For some parameters, the available load capacity of the
immediate receiving water will be consumed. This may affect future water quality based effluent
limitations for additional dischargers within this portion of the watershed.

INSTREAM MONITORING REQUIREMENTS
Upstream: US 13 / 258
Downstream: Highway 123
Parameters: temperature, dissolved oxygen, fecal coliform, conductivity
Special instream monitoring locations or monitoring frequencies:
All sites involved in the colaborative effort between Snowhill, Hookerton, and Maury Sanitary need to be
sampled on the .same day.
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Adequacy of Existing Treatment
Has the facility demonstrated the ability to meet the proposed new limits with existing treatment facilities?
Yes— No
If no, which parameters cannot be met?
Would a "phasing in" of the new limits be appropriate? Yes No
If yes, please provide a schedule (and basis for that schedule) with the regional
office recommendations:
If no, why not?
Special Instructions or Conditions
Wasteload sent to EPA? (Major) (Y or N) .
(If yes, then attach schematic, toxics spreadsheet, copy of model, or, if not modeled, then old assumptions
that were made, and description of how it fits into basinwide plan)
Additional Information attached? (Y or N) If yes, explain with attachments.

DIVISION OF WATER QUALITY
June 26, 1997
MEMORANDUM
TO: File
FROM: Jeff Myhra
DATE: June 26, 1997
SUBJECT: Summary of telephone conversation with Tyndall Lewis
I placed a telephone call to Mr. Temple on Wednesday June 26 in reference to the expansion
planned for the Town of Snow Hill (NC0020842). The purpose of the telephone call was to
obtain answers to the following questions:
• Set up a tour of the WWTP prior to the public hearing:
A meeting has been scheduled for 4:OOPM on Tuesday, July 8th (He did not want me
to send him a letter confirming this meeting). We will meet either him or his consulting
engineer, Charles Joyner, at the Town Hall at 4:OOPM.
✓• Why is the facility requesting expansion?
The flow at the facility is -above 80% of permitted flow ( 250,000GPD plant is
operating at 300,000 GPD) and the town is expecting continued growth (possible
industry) in the area in the future.
• What is the currenfdesign for removing nutrients?
A 30-hour detention oxidation ditch (duel ditches can be operated in series or parallel).
New facility will have nitrification and denitrification capabilities along with
chlorination and dechlorination capabilities. New facility will significantly decrease
BOD levels'it will also achieve nitrification, denitrification and dechlorination which are
all different (BETTER) than the existing facility.
The following rate increases have been imposed to offset the costs:
water customer
5000 gallon sewer customer $ 9.56
water customer
00 gallon sewer customer
18.95 '

Uzi I WwrP Tau✓
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44 °`
pub'lk
J�u
Sjr-rr
V-A,A't
w„Ol I-

NPDES WASTE LOAD ALLOCATION
PERMIT NO.: NC0020842
PERMITTEE NAME: Town of Snow Hill
FACILITY NAME: Snow Hill WWTP
Facility Status: Existing
Permit Status: Modification
Major
Pipe No.
Minor -V
Design Capacity: 0.5 MGD*
Domestic (% of Flow): 90 %'r /00% ,2 t wtaa
Industrial (% of Flow): %**
Comments:
IZECEIVING STREAM:Contentnea Creek
Class: C-Swamp NSW
Sub -Basin: 03-04-07
Reference USGS Quad: F 28 NW (please attach)
County: Greene
Regional Office: Washington Regional Office
Previous Exp. Date: 5/31/98 Treatment Plant Class: 11
Classification changes within three miles:
Modeler
Date Rec.
#
Drainage Area (mil )
Avg. Streamflow (cfs):
7Q10 (cfs) Winter 7Q10 (cfs) 30Q2 (cfs)
Toxicity Limits: IWC % Acute/Chronic
Instream Monitoring:
Parameters
Upstream Location
Downstream Location
v
Requested by: Jeff Myhra Date: 7/y4/96
Prepared by: Date: Comments: ?el(, :SEE
Reviewed by: Date' "..N"< o w
Effluent
Characteristics
Summer
Winter
BOD5 (mg/1)
NHS-N (mg/1)
D.O. (mg/1)
TSS (mg/1)
F. Col. (/100 ml)
pH (SU)
/ a' ck skeet w<s 5. a -I— � � e..- s'tz �gd . oL( it,
wke- e..,:Aet
`ie"

ROAD CLASSIFICATION
PRIMARY HIGHWAY LIGHT -DUN ROAD. HARD OR
HARD SURFACE IMPROVED SURFACE
SECONDARY HIGHWAY
HARD SURFACE m UNIMPROVED ROAD
Latitude:35°27'20"
Longitude:77039'29"
Map # F28NW
Sub -basin: 03-04-07
Stream Class:
C-Swamp NSW
Discharge Class:
01 55
Receiving Stream:
Contentnea Creek
Permit expires: 02/28/99 Qw 0.5 MGD
SCALE 1:24 000
0 1 MILE
0 _ 7000 FEET
1 0 1 KILOMETER
CONTOUR INTERVAL 2 METERS
QUAD LOCATION Town of Snow Hill
NCO020842
Greene County
WWTP

NORTH CAROLINA DEPT. OF NATURAL & ECONOMIC RESOURCES
ENVIRONMENTAL MANAGEMENT COMMISSION
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
APPLICATION FOR PERMIT TO DISCHARGE - SHORT FORM A
FOR
To be filed only by muntcipal wastewater discharger _AGENCY
USE
APPLICATION NUMBER
DATE RECEIVED
A
YEAR MO. DAY
Do not attempt to complete this form before reading "the accompanying instructions
Please print or type
1. Name of organization responsible for facility Town of Snow Hill
2. Address, location, and telephone.. number of *facility producing discharge:
A Name Town of Snow .Hill
B. Mailing address:
1. Street address 201 N. Greene Street -
"" 2. City Snpw Hill 3. County Greene
4. State NC S. ZIP 28580
' C. Location: - -- - -' - - -
1. Street 201 N. Greene Street
2. City Snow Hill 3. County
4, State NC
D. Telephone No. 919 747-3414
Area
.. .... Code
If all your waste is discharged into a publicly owned waste treatment facility and
to the best of your knowledge you are not required to obtain a discharge permit,
proceed to item 3. Otherwise proceed directly to item 4.
3. If you meet the condition stated above, check here a and supply the information
asked for below. After completing these items, please complete the date, title, and
signature blocks below and return this form to the proper reviewing office without
completing the remainder of the form.
A. Name of organization responsible for receiving waste
B. Facility receiving waste:
1. Name
2. Street address
3. City 4. County
S. State 6. ZIP
4. Type of treatment: .. .
A.0 None B.0 Primary C.O lntermedi ate D.DISecondary E.o Advanced
5. Design flow (average daily) of facility •5 mgd.
6. Percent BOD removal (actual): -
A.00-29.9 B.a30-64.9 C.a65-84.9 0.085-94.9 E.095 or more
1. Population served:
A.a 1-199 B.o 200-499 C.a 500-999 D.D[1,000-4,999
E. 0 5,000-9,999' F.010,000 or more _
8. Number of separate discharge points:
A.X1 B.02 C.03 0.a4 E.05 F.06ormore

9. Description of waste water discharged to surface waters only (check as appilcahle).
' Flew, MGO (million gallons per operating day)
Discharge Oer
operating day 0- 0.01- 0.05- 0.1- 0.5- 1.0- 5 or
G.0099I 0.0a9 0.099 f 0.49 0.99 4.9 ( more
('•) (Z`, f (3) (4) (5) (6) I (7)
A. Average
B. Maximum
X
Volume treated before
discharging (percent)
None 0.1- 35- 65- 95-
34,9 64.9 I 94.9 100
(8) (9) (10) I (11) (12)
I I X
I i ! X
10. If any waste wat^-, treatad er untrsated, Is discharged to places other than
surface waters. check belo- as aoolicable.
Flow, MGD (million gallons per operatinq day)
ua=te "pier is 0-0.0099
0.01-0,na9 O.GS-0.099 0.1-0.49 0.5-0.99 1 1.0-4.9 5 or .:ore
discharged 'o
i i1)
(2) (3) (4) 1 (5) (6) (7)
A. Damp well .... ..
B. Evapo—tipn laonn�
1
C. Suhsurr,ce perctatior, system I
.)
0. Ot"r, spirify:--
11. i,: any .iudge ulr.inetely returned to a.waterKay?
n.0 yes e.N no
12_ a. M fOu receive industrial waste?
I - *Yes 2. Qi no
b. If ,Yes, enter approximate number of industrial dischargers into system N/A
13. Tyne of cnilection sewer system:
A.cKSecerate sanitary -
D.uranbined sanitary and storm
C. ❑ Both separate and combined sewer systems
14. Name of receiving water or waters Contentnea
Creek'
15. Ones *Your discharge contain or is it possible for your discharge to contain
one or more of the following substances: ammonia, cyanide, aluminum, heryllium,
cadmium, chromium, copper, lead, mercury, nickel, selenium, zinc, phenols.
.A.cy�ves B.0 no
I certify that 1 am familiar with the information contained in the application and
that to the hest of my knowledge and belief such information is true, cr+nplete, and
accurate.
R. Ben Rayford
Printed Name of Person Signing
Mayor
Title
2-13-96
Detc Application Sicna�� io
re. of- Aopl icant
North Carolina General Statute 143-215.6(b)(2) provides that: Ar7 person tzho knowingly makes
any false statement representation, or certification in any application, record, report, plan,
or other document files or required to be maintained under Article 21 or regulations of the
Environmental Management Cormtission implementing that Article, or who falsifies, tampers with,
or kncrly renders inaccurate any recording or monitoring device or method required to be
operated or maintained under Article 21 or regulations of the Environmental Management Co=,dssic
implementing that Article, shall be guilty of a misdemeanor punishable by a fine not to exceed
$1^,OCO, or by imprisonment not to exceed six months, or by both. (13 G.S.C. Section 1001 provid
a punish—ment by a fine of not more than S10,000 or imprisonment not core than 5 years, or bot�,,
for a. si-ilac- offense.)

Facility Name:
NPDES No.:
Type of Waste:
Facility Status:
Permit Status:
Receiving Stream:
Stream Classification
Subbasin:
County:
Regional Office:
Requestor:
Date of Request:
Topo Quad:
FACT SHEET FOR WASTELOAD ALLOCATION
Town of Snow Hill
NCO020842
Domestic - 100%
Existing
Expansion
Contenmea Creek
C - Swamp - NSW
03-04-07
Greene
Washington
Myhra
7/23/96
F 28 NW
Request # 8497
Wastewater Treatment Plant
Wasteload Allocation Summary
(approach taken, correspondence with region, EPA, etc.)
Stream Characteristic:
USGS #
Date:
Drainage Area (mi2):
703
Summer 7Q10 (cfs):
31.4
Winter 7Q10 (cfs):
57.7
Average Flow (cfs):
844
30Q2 (cfs):
IWC (%):
Instream monitoring needs to be on same day at all sites - done in 1995, but not in 1994
C'. 'F ICE,
AUC 1 5 1996
D. E. M.
This Fact Sheet contains language for the Neuse River Interim NSW strategy. No speck limits can be
incorporated into the permit at this time as this plan is still in a draft stage and under review. Once a
document is finalized, specific language and/or limits will be incorporated into this permit.
The limits for the increased flow from 0.250 mgd to 0.500 mgd are based upon comparable loading for the)
expanded flow and minimum treatment capabilities. Contentea Creek has documented low DO's (down
to 4 mg/l and occasionally lower), and the Instream Assessment Unit is currently evaluating methods for ---
determining impacts to this system. A calibrated model of Contenmea Creek is under review, (the current_
steady-state model may not portray this system) and could affect future allocations.
Special Schedule Requirements and additional comments from Reviewers:
/4.-> y/./,
Recommended-b'" -- `
Y �"—"`r Date: 9 au�us 119b
Farrell
Instream Assessment: Keoug t
Date: lk Iq to
VyRegional Supervisor: Date: 4
Permits & Engineering: Date:
RETURN TO TECHNICAL SUPPORT BY: SEP 1 0 i996

PARAMETERS
Existing Limits:
Monthly Average
Summer
Winter
Wasteflow (MGD):
0.250
0.250
BOD5 (mg/1):
30
30
NH3N (mg/1):
monitor
monitor
DO (mg/1):
-
_
TSS (mg/1):
30
30
Fecal Coliform V100 ml):
200
200
PH (SU):
6-9
6-9
Residual Chlorine (µg/1):
monitor
monitor
Oil & Grease (mg/1):
Total Phosphorus (mg/1):
monitor
monitor
Total Nitrogen (mg/1):
monitor
monitor
Temperature (°C):
monitor
monitor
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Recommended Limits:
Monthly Average
Summer Winter
Wasteflow (MGD): 0.500 0.500
BOD5 (mg/1): 15— 22.. 5 30
NH3N (mg/1): 4 - too 8
DO (mg/1): 5 - rJo rdea•5r 5
TSS (mg/1): 30_ 4j- 30
Fecal Coliform (/100 ml): 200- zo;a 200
pH (SU): 6- 9- k 5 f s 6-9
Residual Chlorine (µg/l): 28_ 28
Oil & Grease (mg/1): - 1�4 c ; , r1 >: _
Total Phosphorus (mg/1): refer section below on
Total Nitrogen (mg/1): Proposed Neuse Interim NSW Strategy
Temperature (OC): monitor monitor
There shall be no discharge of floating solids or visible foam in other than trace amounts.
Total Phosphorus Total Nitrogen
Association Member t— —
Expanding Facility (>_ 0.5 mgd) 2 mg/1;- Association
Non -Association Member
New & Expanding Domestic /
Municipal Facility 1 mg/1 ** 6 mg/1 **
No Association Formed
New & Expanding Domestic /
Municipal Facility 1 mg/l ** 6 mg/1 **
All wastewater dischargers below Falls Lake Dam will have the option of forming an
association to reduce nutrients through a trading program as an agreement with the Division.
** Monthly Average Limits '-
_x_ Parameter(s) are water quality limited. For some parameters, the available load capacity of the
immediate receiving water will be consumed. This may affect future water quality based effluent
limitations for additional dischargers within this portion of the watershed.

INSTREAM MONITORING REQUIREMENTS
Upstream: US 13 / 258
Downstream: Highway 123
Parameters: temperature, dissolved oxygen, fecal coliform, conductivity
Special instream monitoring locations or monitoring frequencies:
All sites involved in the colaborative effort between Snowhill, Hookerton, and Maury Sanitary need to be
sampled on the same day.
MISCELLANEOUS INFORMATION & SPECIAL CONDITIONS
Adequacy of Existing Treatment
Has the facility demonstrated the ability to meet the proposed new limits with existing treatment facilities?
Yes
If no, which parameters cannot be met?
Would a "phasing in" of the new limits be appropriate? Yes No
If yes, please provide a schedule (and basis for that schedule) with the regional
office recommendations:
If no, why not?
Special Instructions or Conditions
Wasteload sent to EPA? (Major) (Y or N)
(If yes, then attach schematic, toxics spreadsheet, copy of model, or, if not modeled, then old assumptions
that were made, and description of how it fits into basinwide plan)
Additional Information attached? (Y or N) If yes, explain with attachments.

i�
Request # 8497
Facility Name: Snow Hill WWTP
/
NPDES No.: NC0020842
Type of Waste: 100 % Domestic
Facility Status: Existing
Permit Status: Renewal
Stream Characteristic:
Receiving Stream: Contentnea Creek
USGS # 02.0912.4090
Stream Classification: C - Swamp - NSW
Date: 1987
Subbasin: 03-04-07
Drainage Area (mi2): 694
County: Greene
Summer 7010 (cfs): 31
Regional Office: Washington
Winter 7Q10 (cfs): 57
Requestor: Myhra
Average Flow (cfs): 833
Date of Request: 7 / 24 / 96
3002 (cfs): 97
Topo Quad: F 28 NW
IWC (%): 2.4 %
1975: modeled with interaction of Hookerton included for discharge of 0.150 mgd w/ Secondary limits plus a 5.0 mg/I dissolved
oxygen limit recommended.
1983: remodeled and issued w/ Secondary limits for 0.250 mgd,
(no dissolved oxygen limit) - Snow Hill Tape Company proposed
connection
1988: reissued w/ Secondary limits and addition of toxicity test and
chromium monitoring due to Snow Hill Tape Company - Tape
Company decided to go w/ land application and never tied into plant, therefore the chromium monitoring and toxicity testing
requirements were to be dropped.
1993: reissued w/ Secondary limits and 200 / 100 mL fecal coliform - instream monitoring locations were Ad to allow the interacting
dischargers to coordinate.
This WLA is for an expansion to 0.500 mgd. The reason for the requested doubling of flow is the proposed Global TransPark which will
be located in the vacinity of this discharge. Greene County has proposed to take -on 30% of the costs in trade for 30% of the capacity.
The Consultant did a cursory review of land application, but determined that the cost would make this option prohibitive - with the soils
and slopes in this area, I would agree with this position.
The Global TransPark is envisioned as a centralized air terminal for international industrial and consumer products, (similar to the train
terminals in the early 1900's). The plan includes locating industrial and shipping businesses around the park for both transportation and
production of the shipped materials. Because of this, it is likely, (as outlined in the document along with this WLA) that industrial
discharges will be connected to this facility. At this point it is unknown what industrial dischargers might be connected, therefore I will
request the engineer include a statement about possible future metals and/or toxics limits and that any construction should include that
possibility. This WLA will be based upon the current 100% domestic nature of this discharge.
Interim NSW Strategy
How to apply these proposed requirements is difficult - since they have not yet been approved, they may potentially be changed by the
time this permit is issued. Because of that; we may not be able to place actual limits in the permit, (which would be dropped if the
facility Association is formed and approved and Snow Hill becomes a member) as a mechanism of enforcement if the facility doesn't
join or the Association doesn't actually form.
I will follow Carla's direction and insert the same language into the WLA Fact Sheet as was used in the Speculative Limits letter. At this
point it is unknown how this will be applied in the permit. I will note that on the Fad Sheet.
From: Coleen Sullins on Sun, Jul 28, 1996
I am not sure that we will be able to put the limits in any permit between now and when the commission hears this again in september.
That is probably a question that needs to be sent up the chain of command, particularly with one right on the edge of the flow criteria
and the fact that we debated even making those that were less than 1 MGD subject to the new nutrient requirements. Coleen
From: Ruth Swanek on Wed, Jul 24, 1996
Subject: RE: Snow Hill
I would put a note that says "see attached" or,"see below" with attachment outlining the 2 options in the draft strategy as well as what in
current NSW (2 mg/I TP).
I think we should try to put proposed strategy limits in permit for any new and expanding discharge that comes in before the strategy
finalized.
Coleen/Dave - Any comments?
From: Carla Sanderson on Wed, Jul 24, 1996
You should input similar recommendations from what you put on the speculative. Remember to include that this is still a proposed
strategy in DRAFT form.
From: Farrell Keough on Wed, Jul 24, 1996
they have a permit request in-house for an expansion to 0.500 mgd, (we sent out a Speculative Letter for this recently).
should I put asterixed limits of 1 mg/I and 6 mg/I for phosphorus and nitrogen, respectively, on the Fact Sheet with language
stating that if an Association is formed and meets with the Division's requirements and this facility becomes a member that
these limits will be changed to 2 mg/I and Association, (P and N)?

State of North Carolina
Department of Environment,
Health and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Jonathan B. Howes, Secretary
A. Preston Howard, Jr., P.E., Director
July 17, 1996
Honorable R. Ben Rayford
Mayor, Town of Snow Hill
Snow Hill, North Carolina 28580
Subject: Speculative Limits for Town of Snow Hill
NCO020842 Greene County Subbasin: 03-04-07
Dear Mayor Rayford:
I am writing in response to the June 4, 1996 letter from Mr. F. Tyndall Lewis, PE,
concerning a proposed expansion for the Town of Snow Hill waste water discharge. The
proposal is for an expansion of the discharge from the current permitted flow of 0.250 mgd
up to 0.500 mgd at the existing location on Contentnea Creek.
The slow moving nature of Contentnea Creek results in substandard instream dissolved
oxygen (DO) concentrations during critical conditions (i.e. warm weather / low flow
periods). Substandard DO concentrations have been documented at all three NCDWQ
(North Carolina Division of Water Quality) ambient stations located in Contentnea Creek,
(i.e. near Lucama, at Hookerton, and Grifton). Also, modeling analysis, work by the
Research Triangle Institute, and field observations have indicated that the assimilative
capacity of the lower Contentnea Creek is severely compromised.
Therefore, the Contentnea Creek basin has been targeted for a comprehensive
evaluation. This office is developing a field calibrated QUAL2E model to determine the
assimilative capacity of oxygen consuming wastes in the Contentnea Creek watershed.
In light of the limited assimilative capacity of the receiving waters, it is very likely that if
the facility increases wasteflow, more stringent effluent limitations will be required.
Due to the uncertainty of the DEM's empirical desktop model, recommended limits for
the expansion will maintain existing permitted loading. The following outlines our current
recommendations:
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled/ 10% post -consumer paper

Town of Snow Hill Speculative Limits
NC0020842 Greene County
Flow (mgd);
BODS (mg/1):
NH3-N (mg/1):
Dissolved Oxygen (mg/1):
TSS (mg/1):
Fecal Coliform (#/100m1):
pH (SU):
Total Phosphorus (mg/1):
Total Nitrogen (mg/1):
Total Residual Chlorine (µg/1):
Summer Winter
0.500 0.500
15 30
4 8
6 6
30 30
200 200
6-9 6-9
refer following section on
Proposed Neuse Interim NSW Strategy
28.0 28.0
Under current DWQ procedure, dechlorination and chlorine limits are recommended for
all new or expanding dischargers proposing the use of chlorine for disinfection. An
acceptable level of residual chlorine in the proposed discharge is 28 µg/1 for protection
against acute toxicity. The process of chlorination / dechlorination or ultra violet radiation
may allow the facility to comply with the total residual chlorine limit.
Please be advised that response to a speculative request does not guarantee that the
Division will issue an NPDES permit to discharge treated wastewater. In accordance with
the North Carolina General Statutes, the practicable waste treatment and disposal alternative
with the least adverse impact on the environment is required to be implemented.
Nondischarge alternatives, such as spray irrigation or connection to a regional treatment
and disposal system, are considered to be environmentally preferable to a discharge.
Therefore, prior to submittal of an NPDES application, a detailed alternatives analysis must
be prepared to assure that the environmentally sound alternative was selected from the
reasonable cost effective options. In order to receive final permit limits, a formal
application indicating the proposed WWTP design capacity and a justification for the
facility will have to be submitted to the Division's Permits and Engineering Unit.
The DWQ has drafted an interim plan to update the Nutrient Sensitive Waters (NSW)
strategy in the Neuse River Basin. The final rules could be adopted by the Environmental
Management Commission in November, 1996. Attached you will find pages from the
Executive Summary of the Draft Plan. Below is a summary of the requirements that would
affect the Town of Snow Hill wastewater treatment plant if the plan is adopted as currently
drafted. These requirements need to be addressed in the alternatives analysis necessary for
this proposed expansion.
Association Members
Dischargers may form an Association. If such an Association is formed, total loadings
for nitrogen (lbs/year) will be developed for the Association -as a whole. The
Association may then trade allocations of loading among the members to meet the
established target or pay a fee for loading above their allocated amount. If the
Association does not meet its annual loading targets, a flat rate for nutrient loading
above the target must be paid for the implementation, (including administration) of best
management practices for agricultural activities, wetland restoration, or urban
stormwater programs. Existing, new, and expanding discharges equal to or greater than
0.500 mgd will have a total phosphorus limit of 2 mg/l.

Town of Snow Hill Speculative Limits
NCO020842 Greene County
If an Association is not formed or an expanding facility chooses not to join the
Association, expanding dischargers will be required, upon completion of construction,
to comply with a monthly average total nitrogen limit of 6 mg/I and a monthly average
phosphorus limit of 1 mg/1. Dischargers will be required to offset their additional
nutrient loads by funding nonpoint source control programs approved by DWQ. This
offset funding will be applied to nonpoint source control programs approved by the
DWQ, (e.g. agricultural cost share programs, wetland restoration, urban cost share
programs, etc.). Nitrogen and phosphorus loads shall be offset at the rate of 110
percent of the cost to implement Best Management Practices (BMPs) designed to reduce
that same loading created by the new or expanding discharge. This payment will be
required to be received prior to permit issuance and will be good for the five year term of
the permit.
W
Phosphorus Nitrogen
Association Member t
Expanding Facility (>_ 0.5 mgd) 2 mg/I * Association
Non -Association Member
New & Expanding Domestic /
Municipal Facility 1 mg/I ** 6 mg/l **
No Association Formed
New & Expanding Domestic /
Municipal Facility 1 mg/1 ** 6 mg/I **
t All wastewater dischargers below Falls Lake Dam will have the option of forming
an association to reduce nutrients through a trading program as an agreement with
the Division.
* Quarterly Average Limits
** Monthly Average Limits
This proposed discharge for the Town of Snow Hill will need to address these
requirements in further planning endeavors and the alternatives analysis required for this
expansion. DWQ recommends that the options outlined in this draft interim strategy,
(including but not limited to biological nutrient removal processes) be reviewed in the
alternatives analysis. If you would like to discuss general provisions of this strategy,
please feel free to contact Ruth Swanek at [phone], extension 503.
This speculative analysis does not include limits or monitoring requirements for metals
or other toxics due to the presence of industrial components in the wasteflow. If an
NPDES permit is requested, a new evaluation of the constituents involved in this discharge
would be necessary.

Town of Snow Hill Speculative Limits
NC0020842 Greene County
The final NPDES effluent limitations will be determined after a formal permit application
has been submitted to the Division of Water Quality. If there are any additional questions
concerning this matter, please feel free to contacrFarrell Keough at [phone],
extension 510 or me at extension 519.
6incerely,n
Donald L. Safrit, .E.
Assistant Chief for
Water Quality Section
�/�' s . TIZ'i!7ii�
cc: Dave Goodrich, Permits and Engineering
Roger Thorpe Washington Regional Office
David Harding, Planning
Michelle Suverkrubbe, Planning
Bobby Blowe, Construction Grants
F. Tyndall Lewis, PE, McDavid Associates, Inc.
Central Files

McDAVID ASSOCIATES, INC.
INC. Engineers • Planners • Land Surveyors
CORPORATE OFFICE GOLDSBORO OFFICE
[phone] " Fax [phone] [phone] • Fax [phone]
120 N. Main Street" P.O. Drawer 49 109 E. Walnut Street " P.O. Box 1776
Fare viWe, NC 27828 Goldsboro, NC 27533
June 4, 1996 t f'
Mr. Trevor Clements
Division of Environmental Management
P. O. Box 29535
Raleigh, NC 27626
SUBJECT:
Dear Mr. Clements:
J! N 5 1/06
.
5iii:iti:.y n
e
a
Waste Load Allocation
Town of Snow Hill
Greene County, NC
The Town of Snow Hill plans to construct a 500,000 GPD wastewater treatment plant to replace
its existing 250,000 GPD facility. The new plant will be necessary to accommodate future growth.
McDavid Associates is currently designing the proposed new facility and would like a waste
load allocation as soon as possible. The receiving stream is Contentnea Creek, which bears a Class
C classification. A location map is attached which illustrates the location of the existing system and
discharge location. The proposed plant will the located at the same site. The existing discharge
location will remain to be used by the proposed facility.
Please expedite your review of this matter and provide the waste load allocation as quickly as
possible.
If you have any questions, please do not hesitate to contact me.
Sincerely,
McDAVID ASSOCIATES, INC.
F. Tyndall Lewis, PE
Goldsboro Office
FTL:
Attachments
cc: Town of Snow Hill
Roger Thorpe, DEM, Wilmington
Allen Hardison, Greene County Manager
D:\WP51DAT\FrL\96
SNOW Hn.L-DEM LOAD ALLOCATION.LTR
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1991 Cluster Model with 1996 Snow Hill expansion limits and Runoff Updates
General Information
Facility Name:
Snow Hill
Hookerton
Maury Sanitary
NPDES No:
NCO020842
NCO025712
NCO061492
Type of Waste:
Domestic
Facility Status:
Existing
Recieiving Stream: Contenmea Creek
Stream Classification:
C-SWP NSW
Subbasin:
03-04-07
County:
Greene
Regional Office:
WaRO
Topo Quad:
F 28 NW
F 28 NE
F 28 NE
Flow Information
-
Runoff
USGS#:
02.0912.4090
02.0915.0200
s7010 (cfs/mi):
Date of Flow Estimates:
1987
1987
1987
( 34 - 0.03 -
2.3 - 0.39 - 31) / 12.05 =
' Drainage Area (mi2):
694
733
733
Summer 7Q110 (cfs):
31 -
31
34 -
Cave (cfs/mi):
Winter 7Q10 (cfs):
57
60
( 880 - 0.78
- 18 - 13 - 833) / 12.05 =
Average Flow (cis):
833
880
30Q2 (cfs):
97
IWC at Point of Discharge (%)
2.4 %
0.3 %
1.0%
Cummulative IWC (%):
2.4%
2.7 %
3.7%
Model Input Information
Segment / Reach #
S1 R1
S1 R2
S1 R3
S1 R4
S1 R5
Facility:
Snow Hill
Hookerton
Rainbow Creek
Maury Sanitary
Mussel Run
Length of Reach (miles):
8.6
0.2
0.7
0.65
1.9
Incrememntal Length (miles):
0.2
0.05
0.1
0.05
0.1
Waste Characteristics
Flow (mgd):
0.500
0.060
0.225
CBOD (mgA):
zzs
45
19.5
NBOD (mgA):
IS
90
13.5
D.O. (mg/1):
6
6
Runoff Characteristics
s7010 (cfs/mi2):
0.02
0.02
0.02
0.02
0.02
Cave (cfs/mi2):
1.26
1.26
1.26
1.26
1.26
CBOD (mgA):
2
NBOD (mgA):
1
D.O. (mg/I):
Tributary Characteristics
s7010 (cfs/mi2):
0.03
0.00
2.3
0.00
0.39
Cave (cfs/mi2):
0.78
18
13
CBOD (mgA):
2
2
2
NBOD (mgA):
1
1
1
D.O. (mg/1):
default
default
default
Slope (fpm):
0.7
0.7
0.7

SUMMER
If9'91—CL-US,TER=MODE L=W /—T9 9 6,
INFUTS_&_SNOW—
HILL_EXPANSION,
----------
MODEL RESULTS ----------
Discharger
:
NCO020842
Receiving
Stream :
CONTENTNEA
CREEK
----------------------------------------------------------------------
The End
D.O.
is 5.01
mg/l.
The End
CBOD
is 0.87
mg/1.
The End
----------------------------------------------------------------------
NBOD
is 0.32
mg/l.
WLA WLA
WLA
DO Min
CBOD NBOD
DO
Waste Flo
(mg/1)
------
Milepoint
---------
Reach # (mg/1) (mg/1)
------- ---- ----
(mg/1)
--
(mgd)
---------
Segment
1
5.01
12.15
5
Reach
1
22.50 18.00
5.00
0.50000
Reach
2
45.00 90.00
0.00
0.06000
Reach
3
0.00 0.00
0.00
0.00000
Reach
4
19.50 13.50
6.00
0.22500
Reach
5
0.00 0.00
0.00
0.00000

SUMMER
(1.991-CDUSTER-MODEL
W/ 1996n
INPUTS_&-SNOW_HILL
EXPANSION
Seg #
I Reach #
Seg Mi
D.O.
CBOD
NBOD I
Flow I
1
1
0.00
7.12
2.50
1.41
31.80
1
1
0.20
7.00
2.44
1.35
31.81
1
1
0.40
6.90
2.38
1.29
31.81
1
1
0.60
6.79
2.32
1.24
31.82
1
1
0.80
6.70
2.27
1.18
31.82
1
1
1.00
6.60
2.22
1.13
31.83
1
1
1.20
6.51
2.16
1.08
31.83
1
1
1.40
6.43
2.11
1.04
31.83
1
1
1.60
6.35
2.06
0.99
31.84
1
1
1.80
6.27
2.01
0.95
31.84
1
1
2.00
6.19
1.96
0.91
31.85
1
1
2.20
6.12
1.92
0.87
31.85
1
1
2.40
6.06
1.87
0.83
31.85
1
1
2.60
5.99
1.83
0.80
31.86
1
1
2.80
5.93
1.78
0.76
31.86
1
1
3.00
5.88
1.74
0.73
31.87
1
1
3.20
5.82
1.70
0.70
31.87
1
1
3.40
5.77
1.66
0.67
31.87
1
1
3.60
5.72
1.62
0.64
31.88
1
1
3.80
5.68
1.58
0.61
31.88
1
1
4.00
5.63
1.54
0.58
31.89
1
1
4.20
5.59
1.51
0.56
31.89
1
1
4.40
5.55
1.47
0.54
31.89
1
1
4.60
5.52
1.43
0.51
31.90
1
1
4.80
5.48
1.40
0.49
31.90
1
1
5.00
5.45
1.37
0.47
31.91
1
1
5.20
5.42
1.33
0.45
31.91
1
1
5.40
5.39
1.30
0.43
31.91
1
1
5.60
5.36
1.27
0.41
31.92
1
1
5.80
5.34
1.24
0.39
31.92
1
1
6.00
5.32
1.21
0.38
31.93
1
1
6.20
5.29
1.18
0.36
31.93
1
1
6.40
5.27
1.16
0.34
31.93
1
1
6.60
5.26
1.13
0.33
31.94
1
1
6.80
5.24
1.10
0.32
31.94
1
1
7.00
5.22
1.07
0.30
31.95
1
1
7.20
5.21
1.05
0.29
31.95
1
1
7.40
5.20
1.02
0.28
31.95
1
1
7.60
5.18
1.00
0.26
31.96
1
1
7.80
5.17
0.98
0.25
31.96
1
1
8.00
5.16
0.95
0.24
31.97
1
1
8.20
5.16
0.93
0.23
31.97
1
1
8.40
5.15
0.91
0.22
31.97
1
1
8.60
5.14
0.89
0.21
31.98
1
2
8.60
5.13
1.01
0.47
32.07
1
2
8.65
5.12
1.01
0.47
32.07
1
2
8.70
5.12
1.00
0.46
32.07
1
2
8.75
5.11
1.00
0.46
32.07
1
2
8.80
5.11
0.99
0.45
32.07
1
3
8.80
5.25
1.06
0.49
34.37
1
3
8.90
5.24
1.05
0.48
34.38
1
3
9.00
5.23
1.03
0.47
34.38
1
3
9.10
5.22
1.02
0.46
34.38
1
3
9.20
5.21
1.01
0.45
34.38
1
3
9.30
5.20
1.00
0.44
34.38
1
3
9.40
5.19
0.99
0.43
34.39

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9£'0
T6'0
ZO'S
SL'TT
S
T
LT'S£
L£'0
£6'0
£0'S
SS'TT
S
T
9T'S£
8£'0
96'0
SO'S
S£'TT
S
T
9T'S£
Ob'0
L6'0
90'9
ST'TT
S
T
9T'S£
Tb'0
00'1
LO'S
96'OT
S
T
ST'S£
£b'0
ZO'T
60'S
SL OT
S
T
ST'SE
9b'0
60'T
OT'S
SS'OT
S
T
bT'S£
Lb'O
LO'T
ZT'S
S£'OT
S
T
bT'S£
66'O
60'1
bT'S
ST'OT
S
T
SL'b£
8b'0
80'T
ZT'S
ST'OT
b
T
SL'b£
66'O
60'T
ZT'S
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b
T
SL'b£
66'0
60'T
£T'S
SO'OT
b
T
SL'b£
OS'0
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£T'S
00'OT
b
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SL'b£
O9'0
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96'6
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T
bL'b£
TS'O
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bT'S
06'6
b
T
bL'b£
TS'O
ZT'T
ST'S
98'6
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T
bL'b£
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ST'S
08'6
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£9'0
£T'T
9T'S
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£S'0
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99'6
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bS'0
ST'T
8T'9
09'6
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T
bL'b£
SS'0
9T'T
8T'9
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bL'b£
99'0
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6T'S
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6£'bE
Zb'0
86'0
8T'S
O9'6
£
T

*** MODEL SUMMARY DATA ***
Discharger
: NCO020842
Subbasin : 0304
Receiving Stream
: CONTENTNEA
CREEK
Stream
Class: C
Summer
7Q10
: 31.4
Winter
7Q10
: 57.7
Design
Temperature:
27.0
ILENGTHI
SLOPEI'VELOCITY
I DEPTHI Kd I
Kd
I Ka I
Ka I
KN I
KN
I KNR I
KNR
I SOD I
SOD I
-------------------------------------------------------------------------------------------------------------------
I mile I
ft/mil
fps I ft Idesignl
@20
Idesignl
@20 Idesignl
@20
Idesignl
@20
Idesignl
@20 1
Segment 1
I I
1 8.601
I
0.701
I I 1
0.142 1 3.87 1 0.28 1
0.20
1 I
1 0.10 I
1
0.091
1
0.51 1
0.30
1 I
i 0.51 1
0.00
1 1
1 0.00 1
I
0.00 1
Reach 1
-------------------------------------------------------------------------------------------------------------------
1 1
1
1 1 1
I 1
1
1
1
1
Segment 1
I 1
1 0.20)
1
0.701
1 1 1
0.142 1 3.87 1 0.28 1
0.20
1 1
1 0.10 1
1
0.091
1
0.51 1
0.30
1 1
1 0.51 1
0.00
1 1
1 0.00 1
1
0.00 I
Reach 2
-------------------------------------------------------------------------------------------------------------------
1 1
1
1 1 1
1 1
1
1
1 1
1
Segment 1
I I
1 0.701
I
0.701
I I I
0.149 1 3.92 1 0.28 1
0.20
I I
1 0.11 1
I
0.091
I
0.51 1
0.30
I I
1 0.51 1
0.00
I I
1 0.00 1
I
0.00 1
Reach 3
-------------------------------------------------------------------------------------------------------------------
1 1
1
1 1 1
1 1
1
1
1 1
I
Segment 1
I I
1 0.651
I
0.701
I I I
0.150 1 3.93 1 0.28 1
0.20
I I
1 0.11 1
I
0.091
I
0.51 1
0.30
I I
1 0.51 10.00
I I
1 0.00 1
I
0.00 1
Reach 4
-------------------------------------------------------------------------------------------------------------------
1 1
1
1 1 1
1 1
1
1
1 1
1
Segment 1
I I
1 2.001
I
0.701
I I I
0.151 1 3.95 1 0.28 1
0.20
I I
1 0.11 1
I
0.091
1
0.51 1
0.30
1 1
1 0.51 1
0.00
1 1
1 0.00 1
0.00 I
Reach 5
1 1
1
1 1 1
1 1
1
1
1 1
1
I Flow
I CBOD
1 NBOD 1
D.O.
I cfs
I mg/l
1 mg/l 1
mg/l 1
Segment 1
Reach 1
Waste
1 0.775
1 22.500 1
18.000 1
5.000
Headwaters[ 31.000
1 2.000 1
1.000 1
7.170
Tributary
1 0.030
1 2.000 1
1.000 1
7.170
* Runoff
1 0.020
I 2.000 1
1.000 1
7.170
Segment 1
Reach 2
Waste
1 0.093
1 45.000 1
90.000 I
0.000
Tributary
1 0.000
1 2.000 1
1.000 I
7.170
* Runoff
1 0.020
1 2.000 1
1.000 1
7.170
Segment 1 Reach 3
Waste
1 0.000
1 0.000
1 0.000 1
0.000
Tributary
1 2.300
1 2.000
1 1.000 1
7.170
* Runoff
1 0.020
1 2.000
1 1.000 1
7.170
Segment 1
Reach 4
Waste
1 0.349
1 19.500
1 13.500 1
6.000

Tributary
1 0.000 1
2.000 1
1.000 1
7.170
* Runoff
1 0.020 1
2.000 1
1.000 1
7.170
Segment 1
Reach 5
Waste
1 0.000 1
0.000 1
0.000 1
0.000
Tributary
1 0.390 1
2.000 1
1.000 1
7.170
* Runoff
1 0.020 1
2.000 1
1.000 1
7.170
* Runoff flow is in cfs/mile

1991 Cluster Model
General Information
Facility Name:
Snow Hill
Hookerton
Maury Sanitary
NPDESNo:
NC0020842
NC0025712
NC0061492
Type of Waste:
Domestic
Facility Status:
Existing
Recteiving Stream: Contentnea Creek
Stream Classification:
C-SWP NSW
Subbasin:
03-04-07
County:
Greene
Regional Office:
WARQ
Topo Quad:
F 28 NW
F 28 NE
F 28 NE
Flow Information
USGS #:
02.0912.4090
02.0915.0200
Date of Flow Estimates:
1987
1987
1987
Drainage Area (mi2):
694
733
733
Summer 7010 (cis):
31
31
34
Winter 7010 (cis):
57
60
Average Flow (cis):
833
880
3002 (cfs):
97
IWC at Point of Discharge (%)
2.4%
0.3 %
1.0%
Cummulative IWC (%):
2.4%
2.7%
3.7%
Model Input Information
Segment / Reach #
S1 R1
S7 R2
S1 R3
S1 R4
S1 R5
Facility:
Snow Hill
Hookerton
Rainbow Creek
Maury Sanitary
Mussel Run
Length of Reach (miles):
8.6
0.2
0.7
0.65
1.9
Incrememntal Length (miles):
0.2
0.05
0.1
0.05
0.1
Waste Characteristics
Flow (mgd):
0.250
0.060
0.225
CBOD (mgA):
3'6`15
45
19.5
NBOD (mg/1):
qO
90
13.5
D.O. (mg/1):
6
Runoff Characteristics
s7O10 (cfs/mi2):
0.10
0.00
0.00
0.00
0.00
Qave (cfs/mi2):
0.56
CSOD (mgA):
2
NBOD (mgA):
1
D.O. (mg/1):
Tributary Characteristics
_
s7O10 (cfs/mi2):
0.03
0.00
2.3
0.00
0.39
nave (cfs/mi2):
0.78
18
13
CBOD (mg/):
2
2
2
NBOD (mg/1):
1
1
1
D.O. (mg/1):
default
default
default
Slope (fpm):
- 0.7
0.7
0.7

SUMMER
1991- CLUSTER MODEL -INPUT Si
tEVERYONE_AT. 30_ /__30,
---------- MODEL RESULTS ----------
Discharger : NCO020842
Receiving Stream : CONTENTNEA CREEK
----------------------------------------------------------------------
The End D.O. is 4.54 mg/l.
The End CBOD is 0.84 mg/l.
The End NBOD is 0.44 mg/l.
----------------------------------------------------------------------
WLA
WLA
WLA
DO Min
CBOD
NBOD
DO
Waste Flo
(mg/1) Milepoint Reach #
----------------------
(mg/1)
----
(mg/1)
----
(mg/1)
--
(mgd)
---------
Segment
1
4.54 12.15 5
Reach
1
45.00
90.00
0.00
0.25000
Reach
2
45.00
90.00
0.00
0.06000
Reach
3
0.00
0.00
0.00
0.00000
Reach
4
45.00
90.00
0.00
0.06500
Reach
5
0.00
0.00
0.00
0.00000

SUMMER
`
T,9.9.1 CLUSTER MODEli INPUTS)
EVERYONE_AT_30)_/ IOD
I Seg #
Reach # I
Seg Mi I
D.O. I
CBOD I
NBOD I
Flow I
SNOW HkL` 1
1
0.00
7.00
3.05
3.17
31.80
aw-osao ..rret1
1
0.20
6.80
2.98
3.03
31.82
/30) 1
1
0.40
6.61
2.90
2.90
31.84
1
1
0.60
6.43
2.83
2.78
31.86
1
1
0.80
6.26
2.77
2.66
31.88
1
1
1.00
6.09
2.70
2.54
31.90
1
1
1.20
5.94
2.64
2.43
31.92
1
1
1.40
5.79
2.57
2.33
31.94
1
1
1.60
5.65
2.51
2.23
31.96
1
1
1.80
5.52
2.45
2.13
31.98
1
1
2.00
5.39
2.40
2.04
32.00
1
1
2.20
5.27
2.34
1.95
32.02
1
1
2.40
5.16
2.28
1.87
32.05
1
1
2.60
5.05
2.23
1.78
32.07
1
1
2.80
4.95
2.18
1.71
32.09
1
1
3.00
4.86
2.12
1.63
32.11
1
1
3.20
4.76
2.07
1.56
32.13
1
1
3.40
4.68
2.03
1.50
32.15
1
1
3.60
4.60
1.98
1.43
32.17
1
1
3.80
4.52
1.93
1.37
32.19
1
1
4.00
4.45
1.88
1.31
32.21
1
1
4.20
4.38
1.84
1.26
32.23
1
1
4.40
4.32
1.80
1.20
32.25
1
1
4.60
4.26
1.75
1.15
32.27
1
1
4.80
4.20
1.71
1.10
32.29
1
1
5.00
4.15
1.67
1.05
32.31
1
1
5.20
4.10
1.63
1.01
32.33
1
1
5.40
4.05
1.60
0.96
32.35
1
1
5.60
4.01
1.56
0.92
32.37
1
1
5.80
3.97
1.52
0.88
32.39
1
1
6.00
3.93
1.49
0.85
32.41
1
1
6.20
3.90
1.45
0.81
32.43
1
1
6.40
3.87
1.42
0.78
32.45
1
1
6.60
3.84
1.38
0.74
32.47
1
1
6.80
3.81
1.35
0.71
32.49
1
1
7.00
3.79
1.32
0.68
32.51
1
1
7.20
3.77
1.29
0.65
32.53
1
1
7.40
3.75
1.26
0.62
32.55
1
1
7.60
3.73
1.23
0.60
32.57
1
1
7.80
3.72
1.20
0.57
32.59
1
1
8.00
3.70
1.17
0.55
32.61
1
1
8.20
3.69
1.15
0.52
32.63
1
1
8.40
3.68
1.12
0.50
32.65
1
1
8.60
3.67
1.09
0.48
32.67
Noorresoni 1
8-60
3.66
1- 2
0-74 32-7-6
q .o-aco l
2
8.65
3.66
1.21
0.73
32.76
1
2
8.70
3.65
1.20
0.72
32.76
1
2
8.75
3.65
1.20
0.71
32.76
1
2
8.80
3.64
1.19
0.70
32.76
1
3
8.80
3.87
1.24
0.72
35.06
1
3
8.90
3.86
1.23
0.71
35.06
1
3
9.00
3.85
1.21
0.69
35.06
1
3
9.10
3.84
1.20
0.68
35.06
1
3
9.20
3.83
1.19
0.67
35.06
1
3
9.30
3.82
1.17
0.65
35.06
1
3
9.40
3.82
1.16
0.64
35.06

1
3
9.50
3.81�
1.15
0.63
35.06
mu a�SAucra¢ 1
4
9.50
3.80
1.27
0.88
35.16
Ow=0.065-..ya1
4
9.55
3.79
1.27
0.87
35.16
1
4
9.60
3.78
1.26
0.86
35.16
1
4
9.65
3.78
1.25
0.85
35.16
1
4
9.70
3.77
1.24
0.85
35.16
1
4
9.75
3.76
1.24
0.84
35.16
1
4
9.80
3.76
1.23
0.83
35.16
1
4
9.85
3.75
1.22
0.82
35.16
1
4
9.90
3.74
1.22
0.81
35.16
1
4
9.95
3.74
1.21
0.80
35.16
1
4
10.00
3.73
1.20
0.80
35.16
1
4
10.05
3.73
1.20
0.79
35.16
1
4
10.10
3.72
1.19
0.78
35.16
1
4
10.15
3.72
1.18
0.77
35.16
1
5
10.15
3.75
1.19
0.77
35.55
1
5
10.35
3.73
1.17
0.74
35.55
1
5
10.55
3.71
1.14
0.71
35.55
1
5
10.75
3.70
1.11
0.68
35.55
1
5
10.95
3.68
1.09
0.66
35.55
1
5
11.15
3.67
1.06
0.63
35.55
1
5
11.35
3.66
1.04
0.60
35.55
1
5
11.55
3.65
1.02
0.58
35.55
1
5
11.75
3.64
1.00
0.56
35.55
1
5
11.95
3.63
0.97
0.53
35.55
1
5
12.15
3.63
0.95
0.51
35.55
I Seg #
Reach #
I Seg Mi I
D.O. I
CBOD I
NBOD I
Flow

*** MODEL SUMMARY DATA ***
Discharger
: NC0020842
Subbasin : 0304
Receiving Stream
: CONTENTNEA
CREEK
Stream Class: C
Summer
7Q10
: 31.4
Winter
7Q10
: 57.7
Design
Temperature: 27.0
ILENGTHI
SLOPEI
VELOCITY I DEPTHI Kd I
Ed
I Ka I
Ka I
KN I
KN
I KNR I
KNR
I SOD I
SOD I
-------------------------------------------------------------------------------------------------------------------
I mile I
ft/mil
fps I ft Idesignl
@20
Idesignl
@20 Idesignl
@20
Idesignl
@20
Idesignl
@20 1
Segment 1
I I
1 8.601
I
0.701
I I I
0.142 1 3.86 10.28 10.20
I I
1 0.10 1
I
0.09I
I
0.51 1
0.30
I I
1 0.51 1
0.00
I I
1 0.00 1
I
0.00 1
Reach 1
-------------------------------------------------------------------------------------------------------------------
1 1
1
1 1 1
1 1
1
1
1 1
1
Segment 1
I I
1 0.201
I
0.701
I I I
0.144 1 3.87 1 0.28 1
0.20
I I
1 0.10 1
I
0.091
I
0.51 1
0.30
I I
1 0.51 1
0.00
I I
1 0.00 1
I
0.00 1
Reach 2
-------------------------------------------------------------------------------------------------------------------
1 1
1
1 1 1
1 1
1
1
1 1
1
Segment 1
I I
1 0.701
I
0.701
I I I
0.150 1 3.92 1 0.28 1
0.20
I I
1 0.11 1
I
0.091
I
0.51 1
0.30
1 1
1 0.51 1
0.00
1 1
1 0.00 1
1
0.00 1
Reach 3
-------------------------------------------------------------------------------------------------------------------
1 1
1
1 1 1
1 1
1
1
1 1
1
Segment 1
I I
1 0.651
I
0.701
I I I
0.151 1 3.92 1 0.28 1
0.20
I I
1 0.11 1
I
0.091
I
0.51 1
0.30
I I
1 0.51 1
0.00
I I
1 0.00 1
I
0.00 1
Reach 4
-------------------------------------------------------------------------------------------------------------------
1 1
1
1 1 1
1 1
1
1
1 1
1
Segment 1
I I
1 2.001
I
0.701
I I I
0.151 1 3.94 1 0.28 1
0.20
I I
1 0.11 1
I
0.091
I
0.51 1
0.30
I I
1 0.51 1
0.00
I I
1 0.00 1
I
0.00 1
Reach 5
1 1
1
1 1 1
1 1
1
1
1 1
1
I
Flow
I CBOD
I NBOD I
D.O. I
I
cfs
I mg/l
I mg/l I
mg/l I
Segment 1 Reach 1
Waste 1
0.388
1 45.000
1 90.000
0.000
Headwatersl
31.000
1 2.000
1 1.000 1
7.170
Tributary I
0.030
I 2.000
1 1.000 1
7.170
* Runoff I
0.100
I 2.000
1 1.000 1
7.170
Segment 1 Reach 2
Waste
1 0.093
1 45.000
1 90.000 1
0.000
Tributary
1 0.000
1 2.000
1 1-000 I
7.170
* Runoff
I 0.000 1
2.000
1 1.000 1
7.170
Segment 1
Reach 3
Waste
I 0.000 I
0.000
1 0.000 1
0.000
Tributary
I 2.300 I
2.000
1 1.000 1
7.170
* Runoff
I 0.000 1
2.000
1 1.000 1
7.170
Segment 1 Reach 4
Waste 1 0.101 1 45.000 1 90.000 1 0.000

Tributary
1 0.000 1
2.000 1
1.000 1
7.170
* Runoff
1 0.000 1
2.000 1
1.000 1
7.170
Segment 1
Reach 5
Waste
1 0.000 1
0.000 1
0.000 1
0.000
Tributary
1 0.390 1
2.000 1
1.000 1
7.170
* Runoff
1 0.000 1
2.000 1
1.000 1
7.170
* Runoff flow is in cfs/mile

1991 Cluster Model with 1995 Snow Hill expansion and 1991 model rates held constant
General Information
Facility Name:
Snow Hill
Hookerton
Maury Sanitary
NPDES No:
NC0020842
NC0025712
NC0061492
_ Type of Waste:
Domestic
Facility Status:
Existing
Recieiving Stream: Contentnea Creek
Stream Classification:
C-SWP NSW
>'
Subbasin:
03-04-07
County:
Greene
Regional Office:
WaRD
Topo Quad:
F 28 NW
F 28 NE
F 28 NE
Flow Information
11SGS #:
02.0912.4090
02.0915.0200
Date of Flow Estimates:
1987
1987
1987
Drainage Area (mi2):
694
733
733
Summer 7010 (cfs):
31
31
34
Winter 7010 (cfs):
57
60
Average Flow (cfs):
833
880
30Q2 (cfs):
97
IWC at Point of Discharge (%)
2.4%
0.3%
1.0%
CummulaWe IWC (%):
2.4%
2.7%
3.7%
Model Input Information
Segment / Reach #
S1 R1
S1 R2
St R3
S1 R4
S1 R5
Facility:
Snow Hill
Hookerton
Rainbow Creek
Maury Sanitary
Mussel Run
Length of Reach (miles):
8.6
0.2
0.7
0.65
1.9
Incrememntal Length (miles):
0.2
0.05
0.1
0.05
0.1
Waste Characteristics
Flow (mgd):
0.500
0.060
0.225
CBOD (mg/1):
45
45
19.5
NBOD (mg/I):
90
90
13.5
D.O. (mg/1):
6
Runoff Characteristics
s7010 (cfs/mi2):
0.00
0.00
0.00
0.00
0.00
Cave (cfs/mi2):
0.56
CBOD (mg/1):
2
NBOD (mg/I):
1
D.O. (mg/1):
Tributary Characteristics
s7Q10 (cfs/mi2):
0.03
0.00
2.3
0.00
0.39
Cave (cfs/mi2):
0.78
18
13
CBOD (mg/1):
2
2
2
NBOD (mg/l):
1
1
1
D.O. (mg/1):
default
default
default
Slope (fpm):
0.7
0.7
0.7

SUMMER
].99:6_SNOW_HILL_EXPANS.ION)
KEP_T_1.991=MODEL- RATES
_LOCKED
----------
MODEL
RESULTS ----------
Discharger
:
NCO020842
Receiving Stream :
CONTENTNEA
CREEK
----------------------------------------------------------------------
The End
D.O.
is 3.69
mg/l.
The End
CBOD
is 0.98
mg/l.
The End
----------------------------------------------------------------------
NBOD
is 0.43
mg/l.
WLA WLA
WLA
DO Min
CBOD NBOD
DO
Waste Flo
(mg/1)
Milepoint
Reach
# (mg/1) (mg/1)
(mg/1)
--
(mgd)
---------
Segment
1
------
3.63
---------
8.80
-------
2
---- ----
Reach
1
45.00 90.00
0.00
0.50000
Reach
2
45.00 90.00
0.00
0.06000
Reach
3
0.00 0.00
0.00
0.00000
Reach
4
19.50 13.50
6.00
0.22500
Reach
5
0.00 0.00
0.00
0.00000

SUMMER
1996
SNOW HILL EXPANSION
KEPT
1991 MODEL RATES LOCKED
Seg #
I Reach #
I Seg Mi
D.O. I
CBOD
NBOD
I Flow I
1
1
0.00
7.00
3.05
3.17
31.80
1
1
0.20
6.80
2.97
3.03
31.82
1
1
0.40
6.60
2.90
2.90
31.84
1
1
0.60
6.42
2.83
2.77
31.86
1
1
0.80
6.25
2.77
2.65
31.88
1
1
1.00
6.09
2.70
2.54
31.90
1
1
1.20
5.93
2.63
2.42
31.92
1
1
1.40
5.78
2.57
2.32
31.94
1
1
1.60
5.64
2.51
2.22
31.96
1
1
1.80
5.51
2.45
2.12
31.98
1
1
2.00
5.38
2.39
2.03
32.00
1
1
2.20
5.26
2.33
1.94
32.02
1
1
2.40
5.15
2.28
1.86
32.05
1
1
2.60
5.04
2.22
1.78
32.07
1
1
2.80
4.94
2.17
1.70
32.09
1
1
3.00
4.84
2.12
1.62
32.11
1
1
3.20
4.75
2.07
1.55
32.13
1
1
3.40
4.66
2.02
1.49
32.15
1
1
3.60
4.58
1.97
1.42
32.17
1
1
3.80
4.50
1.92
1.36
32.19
1
1
4.00
4.43
1.88
1.30
32.21
1
1
4.20
4.36
1.83
1.24
32.23
1
1
4.40
4.30
1.79
1.19
32.25
1
1
4.60
4.24
1.75
1.14
32.27
1
1
4.80
4.18
1.70
1.09
32.29
1
1
5.00
4.13
1.66
1.04
32.31
1
1
5.20
4.08
1.62
1.00
32.33
1
1
5.40
4.04
1.59
0.95
32.35
1
1
5.60
3.99
1.55
0.91
32.37
1
1
5.80
3.95
1.51
0.87
32.39
1
1
6.00
3.92
1.48
0.84
32.41
1
1
6.20
3.88
1.44
0.80
32.43
1
1
6.40
3.85
1.41
0.77
32.45
1
1
6.60
3.82
1.37
0.73
32.47
1
1
6.80
3.80
1.34
0.70
32.49
1
1
7.00
3.78
1.31
0.67
32.51
1
1
7.20
3.75
1.28
0.64
32.53
1
1
7.40
3.73
1.25
0.61
32.55
1
1
7.60
3.72
1.22
0.59
32.57
1
1
7.80
3.70
1.19
0.56
32.59
1
1
8.00
3.69
1.16
0.54
32.61
1
1
8.20
3.68
1.14
0.52
32.63
1
1
8.40
3.67
1.11
0.49
32.65
1
1
8.60
3.66
1.08
0.47
32.67
1
2
8.60
3.65
1.21
0.73
32.76
1
2
8.65
3.64
1.20
0.72
32.76
1
2
8.70
3.64
1.19
0.71
32.76
1
2
8.75
3.63
1.19
0.70
32.76
1
2
8.80
3.63
1.18
0.70
32.76
1
3
8.80
3.86
1.23
0.72
35.06
1
3
8.90
3.85
1.22
0.70
35.06
1
3
9.00
3.84
1.21
0.69
35.06
1
3
9.10
3.83
1.19
0.67
35.06
1
3
9.20
3.82
1.18
0.66
35.06
1
3
9.30
3.81
1.16
0.65
35.06
1
3
9.40
3.80
1.15
0.63
35.06

1
3
9.50
3.80
1.14
0.62
35.06
1
4
9.50
3.82
1.32
0.75
35.41
1
4
9.55
3.81
1.31
0.74
35.41
1
4
9.60
3.81
1.30
0.73
35.41
1
4
9.65
3.80
1.30
0.72
35.41
1
4
9.70
3.79
1.29
0.72
35.41
1
4
9.75
3.79
1.28
0.71
35.41
1
4
9.80
3.78
1.28
0.70
35.41
1
4
9.85
3.78
1.27
0.69
35.41
1
4
9.90
3.77
1.26
0.69
35.41
1
4
9.95
3.77
1.25
0.68
35.41
1
4
10.00
3.76
1.25
0.67
35.41
1
4
10.05
3.76
1.24
0.67
35.41
1
4
10.10
3.75
1.23
0.66
35.41
1
4
10.15
3.75
1.23
0.65
35.41
1
5
10.15
3.79
1.23
0.66
35.80
1
5
10.35
3.77
1.21
0.63
35.80
1
5
10.55
3.75
1.18
0.60
35.80
1
5
10.75
3.74
1.15
0.58
35.80
1
5
10.95
3.73
1.13
0.56
35.80
1
5
11.15
3.72
1.10
0.53
35.80
1
5
11.35
3.71
1.08
0.51
35.80
1
5
11.55
3.70
1.05
0.49
35.80
1
5
11.75
3.69
1.03
0.47
35.80
1
5
11.95
3.69
1.01
0.45
35.80
1
5
12.15
3.69
0.98
0.43
35.80
Seg #
I Reach # I
Seg Mi
D.O. I
CBOD I
NBOD
Flow

*** MODEL SUMMARY DATA ***
Discharger :
NCO020842
Receiving Stream :
CONTENTNEA CREEK
Summer 7Q10 :
31.4
Design Temperature:
27.0
Subbasin : 0304
Stream Class: C
Winter 7Q10 : 57.7
ILENGTHI SLOPEI VELOCITY I DEPTHI Kd I Kd I Ka I Ka I KN I KN I KNR I KNR I SOD I SOD I
I mile I ft/miI fps I ft Idesignl @20 Idesignl @20 Idesignl @20 Idesignl @20 Idesignl @20 1
I I I I I I I I I I I I I I I
Segment 1 1 8.601 0.701 0.142 1 3.86 1 0.28 1 0.20 1 0.10 1 0.091 0.51 1 0.30 1 0.51 1 0.00 1 0.00 1 0.00 1
Reach 1 I I I I I I I I I I I I I
-------------------------------------------------------------------------------------------------------------------
Segment
1
I I
1 0.20I
I
0.701
0.144
I
1 3.87 1
I
0.28
I
1 0.20
I I
1 0.10 1
I
0.091
0.51
I I
1 0.30 1
0.51
I I
1 0.00 1
0.00
I I
1 0.00 1
Reach
-------------------------------------------------------------------------------------------------------------------
2
1 1
1
1 1
1
1 1
1
1 1
1 1
Segment
1
I I
1 0.701
I
0.701
0.150
1 1
1 3.92 1
0.28
1
1 0.20
1 1
1 0.11 1
1
0.091
0.51
1 1
( 0.30 1
0.51
1 1
1 0.00 1
0.00
1 1
1 0.00 1
Reach
-------------------------------------------------------------------------------------------------------------------
3
1 1
1
1 1
1
1 1
1
I 1
1 1
Segment
1
I I
1 0.65I
I
0.101
0.151
I I
1 3.93 1
0.28
I
1 0.20
I I
10.11 1
I
0.091
0.51
I 1
10.30 1
0.51
1 1
1 0.00 10.00
1 1
1 0.00 1
Reach
-------------------------------------------------------------------------------------------------------------------
4
1 1
1
1 1
1
1 1
1
1 1
1 1
Segment
1
I I
1 2.001
I
0.701
0.152
I I
1 3.94 10.28
I
10.20
I I
1 0.11 1
I
0.09I
0.51
I I
1 0.30 1
0.51
I I
1 0.00 1
0.00
I I
1 0.00 1
Reach
5
1 1
1
1 1
1
1 1
I
I I
I I
I Flow
I CBOD
I NBOD
D.O. I
I cfs
I mg/l
mg/1 I
mg/l 1
Segment 1
Reach 1
Waste
1 0.775
1 45.000
1 90.000 1
0.000
Headwatersl 31.000
I 2.000
I 1.000 1
7.170
Tributary
1 0.030 1
2.000
I 1.000 1
7.170
* Runoff
0.100
I 2.000
1.000 1
7.170
Segment 1
Reach 2
Waste
1 0.093 1
45.000
190.000 I
0.000
Tributary
1 0.000 1
2.000
1 1.000 1
7.170
* Runoff
1 0.000 1
2.000
1 1.000 1
7.170
Segment 1
Reach 3
Waste
I 0.000 I
0.000
1 0.000 1
0.000
Tributary
1 2.300 I
2.000
1 1.000 1
7.170
* Runoff
1 0.000 1
2.000
1 1.000 I
7.170
Segment 1 Reach 4
Waste 1 0.349 1 19.500 1 13.500 1 6.000

Tributary
1 0.000
2.000 I
1.000 I
7.170
* Runoff
1 0.000 1
2.000 I
1.000 1
7.170
Segment 1
Reach 5
Waste
1 0.000 I
0.000 I
0.000 I
0.000
Tributary
1 0.390 1
2.000 1
1.000 1
7.170
* Runoff
1 0.000 1
2.000 1
1.000 1
7.170
* Runoff flow is in cfs/mile

1991 Cluster Model with 1996 Snow Hill expansion (and new limits) and 1991 model rates held constant
General Information
Facility Name:
Snow Hill
Hookerton
Maury Sanitary
NPDES No:
NC0020842
NC0025712
NC0061492
Type of Waste:
Domestic
Facility Status:
Existing
Recieiving Stream: Contentnea Creek
Stream Classification:
C-SWP NSW
Subbasin:
03-04-07
_ County:
Greene
Regional Off ice:
WARO
Topo Quad:
F 28 NW
F 28 NE
F 28 NE
Flow Information
11SGS #:
02.0912.4090
02.0915.0200
Date of Flow Estimates:
1987
1987
1987
Drainage Area (mi2):
694
733
733
Summer 7010 (cfs):
31
31
34
Winter 7010 (cfs):
57
60
Average Flow (cfs):
833
880
3002 (cfs):
97
IWC at Point of Discharge (%)
2.4%
0.3%
1.0%
Cummulative IWC (%):
2.4%
2.7%
3.7%
Model Input Information
Segment / Reach #
St R1
S1 R2
S1 R3
S1 R4
S1 PIS
Facility:
Snow Hill
Hookerton
Rainbow Creek
Maury Sanitary
Mussel Run
Length of Reach (miles):
8.6
0.2
0.7
0.65
1.9
Incrememntal Length (miles):
0.2
0.05
0.1
0.05
0.1
Waste Characteristics
Flow (mqd):
0.500
0.060
0.225
CBOD (mg/I):
22.5
45
19.5
NBOD (mg4):
18
90
13.5
D.O. (mg/1):
6
6
Runoff Characteristics
s7Q10 (cfs/mi2):
0.00
0.00
0.00
0.00
0.00
Qave (cfs/mi2):
0.56
CBOD (mg4):
2
NBOD (mg4):
1
D.O. (mg/1):
Tributary Characteristics
s7010 (cfs/mi2):
0.03
0.00
2.3
0.00
0.39
Cave (cfs/mi2):
0.78
18
13
CBOD (mg/l):
2
2
2
NBOD (mg4):
1
1
1
D.O. (mg/1):
default
default
default
Slope (fpm):
0.7
0.7
0.7

SUMMER
TT!9.6-SNOW-HILli
EXPANSION-LIMLT
KEPT__19.9.1_MODEL_RATES-LOCKED
----------
MODEL
RESULTS ----------
Discharger
:
NCO020842
Receiving Stream :
CONTENTNEA
CREEK
----------------------------------------------------------------------
The End
D.O.
is 6.45
mg/l.
The End
CBOD
is 2.11
mg/1.
The End
----------------------------------------------------------------------
NBOD
is 1.04
mg/l.
WLA
WLA
WLA
DO Min
CBOD
NBOD
DO
Waste Flo
(mg/1)
------
Milepoint
---------
Reach
-------
# (mg/1)
----
(mg/1)
----
(mg/1)
--
(mgd)
---------
Segment
1
5.04
12.15
5
Reach
1
22.50
18.00
6.00
0.50000
Reach
2
45.00
90.00
0.00
0.06000
Reach
3
0.00
0.00
0.00
0.00000
Reach
4
19.50
13.50
6.00
0.22500
Reach
5
0.00
0.00
0.00
0.00000

SUMMER
1996
SNOW HILL
KEPT
1991 MODEL
Seg #
Reach #
I Seg Mi
D.O.
CBOD
NBOD
I Flow
1
1
0.00
7.14
2.50
1.41
31.80
1
1
0.20
7.03
2.44
1.35
31.82
1
1
0.40
6.92
2.38
1.29
31.84
1
1
0.60
6.82
2.32
1.24
31.86
1
1
0.80
6.72
2.27
1.18
31.88
1
1
1.00
6.63
2.21
1.13
31.90
1
1
1.20
6.54
2.16
1.08
31.92
1
1
1.40
6.45
2.11
1.04
31.94
1
1
1.60
6.37
2.06
0.99
31.96
1
1
1.80
6.29
2.01
0.95
31.98
1
1
2.00
6.22
1.96
0.91
32.00
1
1
2.20
6.15
1.92
0.87
32.02
1
1
2.40
6.08
1.87
0.83
32.05
1
1
2.60
6.02
1.83
0.80
32.07
1
1
2.80
5.96
1.78
0.76
32.09
1
1
3.00
5.90
1.74
0.73
32.11
1
1
3.20
5.85
1.70
0.70
32.13
1
1
3.40
5.80
1.66
0.67
32.15
1
1
3.60
5.75
1.62
0.64
32.17
1
1
3.80
5.71
1.58
0.61
32.19
1
1
4.00
5.66
1.54
0.59
32.21
1
1
4.20
5.62
1.51
0.56
32.23
1
1
4.40
5.58
1.47
0.54
32.25
1
1
4.60
5.55
1.44
0.51
32.27
1
1
4.80
5.51
1.40
0.49
32.29
1
1
5.00
5.48
1.37
0.47
32.31
1
1
5.20
5.45
1.34
0.45
32.33
1
1
5.40
5.42
1.31
0.43
32.35
1
1
5.60
5.40
1.27
0.41
32.37
1
1
5.80
5.37
1.24
0.40
32.39
1
1
6.00
5.35
1.22
0.38
32.41
1
1
6.20
5.33
1.19
0.36
32.43
1
1
6.40
5.31
1.16
0.35
32.45
1
1
6.60
5.29
1.13
0.33
32.47
1
1
6.80
5.27
1.11
0.32
32.49
1
1
7.00
5.26
1.08
0.31
32.51
1
1
7.20
5.24
1.05
0.29
32.53
1
1
7.40
5.23
1.03
0.28
32.55
1
1
7.60
5.22
1.01
0.27
32.57
1
1
7.80
5.21
0.98
0.26
32.59
1
1
8.00
5.20
0.96
0.25
32.61
1
1
8.20
5.19
0.94
0.24
32.63
1
1
8.40
5.19
0.92
0.23
32.65
1
1
8.60
5.18
0.89
0.22
32.67
1
2
8.60
5.16
1.02
0.47
32.76
1
2
8.65
5.16
1.01
0.47
32.76
1
2
8.70
5.15
1.01
0.46
32.76
1
2
8.75
5.15
1.00
0.46
32.76
1
2
8.80
5.15
1.00
0.45
32.76
1
3
8.80
5.28
1.06
0.49
35.06
1
3
8.90
5.27
1.05
0.48
35.06
1
3
9.00
5.26
1.04
0.47
35.06
1
3
9.10
5.25
1.03
0.46
35.06
1
3
9.20
5.24
1.01
0.45
35.06
1
3
9.30
5.23
1.00
0.44
35.06
1
3
9.40
5.22
0.99
0.43
35.06
EXPANSION LIMIT
RATES LOCKED

MOTS
QOHN
009D
I '0'Q
TW 6aS
# uaPag
# baS
08'9£
Z£'0
L8'0
b0'S
ST'ZT
S
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08'SE
bE'0
68'0
90'9
96'TT
S
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08'S£
S£'0
T6'0
SO'S
SUIT
S
T
08,9E
9E'0
E6'0
90'9
99'TT
S
T
08'SE
8£'0
96'0
80'9
S£'TT
S
T
08,9E
0b'0
L6'0
60'9
9T'TT
S
T
08'9£
Tb'0
00'T
OT'S
96'OT
S
T
08'S£
£b'0
ZO'T
ZT'9
SCOT
S
T
08'9£
Sb'0
b0'T
£T'S
99'OT
9
T
08'9£
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*** MODEL SUMMARY DATA ***
Discharger : NC0020842 Subbasin : 0304
Receiving Stream : CONTENTNEA CREEK Stream Class: C
Summer 7Q10 : 31.4 Winter 7Q10 : 57.7
Design Temperature: 27.0
ILENGTHI SLOPEI VELOCITY I DEPTHI Kd I Kd I Ka I Ka I KN I KN I KNR I KNR I SOD I SOD I
I mile I ft/mil fps I ft Idesignl @20 Idesignl @20 Idesignl @20 Idesignl @20 Idesignl @20 1
I I I 1 1 1 1 1 1 1 1 1 1 1 1
Segment 1 I 8.60I 0.701 0.142 1 3.86 1 0.28 1 0.20 1 0.10 I 0.09I 0.51 1 0.30 1 0.51 1 0.00 1 0.00 1 0.00 1
Reach 1 I I I I I I I I I I I I I
-------------------------------------------------------------------------------------------------------------------
Segment
I
1 1
I
0.20I
I
0.10I
0.144
I
1 3.87
I
1 0.28
I I
1 0.20 1
I
0.10 1
I
0.09I
0.51
I
1 0.30
I
1 0.51
I
1 0.00
I
1 0.00
I I
1 0.00 1
Reach
-------------------------------------------------------------------------------------------------------------------
2 1
1
1
1
1
1 1
1
1
1
1
1
1
Segment
I
1 1
I
0.701
I
0.701
0.150
I I
1 3.92 10.28
I I
1 0.20 1
I
0.11 1
I
0.091
0.51
I
1 0.30
I
1 0.51
I
1 0.00
I
1 0.00
I I
1 0.00 I
Reach
-------------------------------------------------------------------------------------------------------------------
3 1
1
1
1 1
1 1
1
1
1
1
1 1
Segment
I
1 1
I
0.651
1
0.701
0.151
1 1
1 3.93 10.28
1 1
1 0.20 1
1
0.11 1
1
0.091
0.51
1
1 0.30
1
1 0.51
1
1 0.00
1
1 0.00
1 1
1 0.00 1
Reach
-------------------------------------------------------------------------------------------------------------------
4 1
1
1
1 1
1 1
1
1
1
1
1
Segment
I
1 1
I
2.001
I
0.701
0.152
I I
1 3.94 1
0.28
I I
10.20 10.11
I
1
I
0.091
0.51
I
1 0.30
I
1 0.51
I
( 0.00 1
I
0.00
I I
1 0.00 1
Reach
5 1
1
1
1 1
1
1
1
1
1
1
I Flow
I CBOD
I NBOD I
D.O. I
I cfs
I mg/1
I mg/l I
mg/1 I
Segment 1
Reach 1
Waste
1 0.775
1 22.500
1 18.000 1
6.000
Headwatersl 31.000
1 2.000
1 1.000 1
7.170
Tributary
0.030
I 2.000
1 1.000 I
7.170
* Runoff
0.100
2.000
1 1.000 1
7.170
Segment 1
Reach 2
Waste
0.093
145.000
1 90.000
0.000
Tributary
0.000
I 2.000
1 1.000
7.170
* Runoff
I 0.000
1 2.000
1 1.000 1
7.170
Segment 1
Reach 3
Waste
I 0.000
I 0.000
0.000
0.000
Tributary
2.300
I 2.000
1.000
7.170
* Runoff
0.000
1 2.000
1 1.000 I
7.170
Segment 1 Reach 4
Waste 1 0.349 1 19.500 1 13.500 1 6.000

Tributary
0.000 I
2.000
1.000
7.170
r
* Runoff
'
1 0.000 I
2.000
1.000
7.170
Segment 1
Reach 5
Waste
0.000 I
0.000 I
0.000
0.000
Tributary
0.390 I
2.000
1.000
7.170
* Runoff
1 0.000 1
2.000 1
1.000 1
7.170
* Runoff flow is in cfs/mile

To: Permits and En ineering Unit SOC Priority Project: Yes _ No _X_
If "Yes",
WatEr_Qua�i� ction SOC No.
Att :
Jeffrey T Myhra, NPDES Permits Group
Date:
Au 9R
NPDES STAFF REPORT AND RECOMMENDATION
Greene County
Permit No. NC0020842
PART
I - GENERAL INFORMATION
1.
Facilityy and Address: Town of Snow Hill WWTP, 201 N. Green St., Snow Hill,
NC, 28580
:ra
2.
Date of Investigation: Site visited on several occasions
�>
3.
Report Prepared by: Al Hodge n nr
4.
Contact Persons and Tele hone Number(s): Donald Hart 919-747-8115
Mayor R. Ben Rayford, 91 -747-3414, Tyndall Lewis 919-736-7630
-_
5.
Directions to Site: Beginning at the intersection of North Greene St. and w
Second St., proceed south on Second St. for 0.3 miles, turn left on a
private dirt road for 0.2 miles to WWTP
6.
Discharge Point(s); List for all discharge points:
Latitude: 35-27-30 Longitude: 77-39-30
Attach USGS map extract and indicate treatment facility site and discharge
point on map.
USGS Quad Name: Snow Hill
7.
Site size and expansion area consistent with application? Yes _x_ No
If "No", explain:
8.
Topography (relationship to flood plain included): Relatively flatat
approximately 10 ft. above MSL. The plant is in the 100 yr flood plain.
9.
Location of nearest dwelling: 150 yds from the office & laboratory,
greater than 500 yds from the treatments works
10.
Receiving stream or affected surface waters: Contentnea Creek
a. Classification: C Swp NSW
b. River Basin and Sub -basin No.: 03-04-07
C. Describe receiving stream features and pertinent downstream uses:
Contentnea Ck. is a slow moving creek which has documented
substandard dissolved oxygen DO). levels at all three ambient
stations. Also modeling anallysis and field observations have
indicated that the assimilative capacity of the lower Contentnea Ck
is severely compromised.

The creek is also used as a major source of irrigation water by the
agricultural community which is likely to compromise the assimilative
capacity. The Division has yet to evaluate the amounts and locations
of the irrigation withdrawal. Contentnea Creek is used for fishing,
boating, drainage, and a irrigation source.
PART II - DESCRIPTION OF DISCHARGE AND TREATMENT WORKS
1. a. Volume of Wastewater to be Permitted: 0.500 MGD
b. Current Permitted Capacity: 0.250 MGD
C. Actual Treatment Capacity: 0.250 MGD
d. Date(s) and construction allowed by Authorizations to Construct
issued past two years: none
e. Description of existing or substantially constructed wastewater
treatment facilities: dual contact stabilization plants consisting
of bar screen, influent flow measuring, aeration contact
chamber((3.74 hrs), re -aeration chamber(7.48 hrs), clarifier(500
gpd/ft'1, chlorine contact chamber(30 min), aerobic sludge digester
effluent flow measuring, and sludge drying beds and sludge land
application
f. Description of proposed wastewater treatment facilities: dual
anoxic reactors(6 hrs), dual oxidation ditches(30 hrs), dual
secondary clarifiers, effluent chlorination and de -chlorination
chambers and post aeration. The existing WWTP reactors are to be
converted into aerobic digesters.
g. Possible toxic impacts to surface waters: none expected with the
information available at this time
h. Pretreatment Program (POTWs only):
In development Approved
Should be required Not needed _x_
2. Residuals Handling and Utilization Disposal Scheme
a. If residuals are being land applied specify DEM permit number:
WQ0011448 residuals applied by the 'own
b. Residuals Stabilization: PSRP x PFRP Other
C. Landfill: The Town maintains drying beds with the landfill being the
final disposal.
3. Treatment Plant Classification (attach completed rating sheet): Existing
plant is a class II.
4. SIC Code(s): 4952
Wastewater Code(s): 01
Main Treatment Unit Code: 0903

PART III - OTHER PERTINENT INFORMATION
1. Is this facility being constructed with Construction Grant Funds or are
any public monies involved (municipals only)? The funding sources for the
expansion has not yet been announced. However, I believe public monies
will be used.
2. Special monitoring or limitations (including toxicity) requests:
Snow Hill, Hookerton, and Maury Sanitary District should sample the same
day. Also Technical Services should be contacted for input for monitoring
for the QUAL2E model.
3. Alternatives Analysis Evaluation: Has the facility evaluated all of the
non -discharge options available? Provide Regional perspective for each
option evaluated.
SppraIrrigation: The cost analysis for land application came to
15,192,350, with the analysis for new treatment plant and discharge
2,020,000. I believe that the analysis for the land application could be
"fine tuned" some but is accurate enough for the intended purpose of the
AAE. There comes a point when regardless of the cost analysis the
assimilative capacity of the receiving stream mandates no more expansion.
It is impossible to determine this with the model presently available for
this system. The Division is presently developing QUAL2E model which may
give us this information. However, I am unable to determine the length of
time the development will take. It is documented that substandard DO levels
are occurring upstream at Lucama and downstream at Hookerton and Grifton.
I am unable to say what Snow Hills part is in the DO problems.
Connection to Regional Sewer System: unavailable at this time
Subsurface Disposal: 0.500 MGD is to large a volume of WW to disposed of
in this manner
Other Disposal Options: none to my knowledge
PART IV - EVALUATION AND RECOMMENDATIONS: It is recommended the expansion request
be granted with the understanding, (1) the assigned effluent limits will be a
reduction in total pounds of pollutants, and (2) a conditions will be placed in
the permit which requires a modification of the effluent limits when the QUAL2E
model is completed. The Wastewater Treatment Plant Improvements Project report
prepared by McDavid Associates, Inc. proposes the new plant is designed to reduce
the total pounds of pollutants presently being discharged. Also in the event the
QUAL2E model requires a reduction in effluent limits the proposed design is such
that filters may be easily added and increase the plant efficiency.
Signature of report preparer
W _�
aateN uaTity egionaTSupervisor
Date
VAN