NC0078115_Permit Issuance_20070924

Mr. Reid Campbell, P.E.
Regional Manager
Aqua North Carolina, Inc.
202 McKenan Drive
Cary, North Carolina 27511
Dear Mr. Campbell:
Michael F. Easley
Governor
ApwNA William G. Ross, Jr., Secretary
NCDENR North Carolina Department of Environment and Natural Resources
Coleen H. Sullins, Director
Division of Water Quality
September 24, 2007
Subject Issuance of NPDES Permit NCO078115
Greystone Subdivision WWI?
Forsyth County
Division personnel have reviewed and approved your application for renewal of the subject permit
Accordingly, we are forwarding the attached NPDES discharge permit This permit is issued pursuant to the
requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement between North
Carolina and the U.S. Environmental Protection Agency dated May 9, 1994 (or as subsequently amended).
This final permit includes no major changes from the draft permit sent to you on July 18, 2007.
If any parts, measurement frequencies or sampling requirements contained in this permit are unacceptable to
you, you have the right to an adjudicatory hearing upon written request within thirty (30) days following receipt of this
letter. This request must be in the form of a written petition, conforming to Chapter 150B of the North Carolina
General Statutes, and filed with the Office of Administrative Hearings (6714 Mail Service Center, Raleigh, North
Carolina 27699-6714). Unless such demand is made, this decision shall be final and binding.
Please note that this permit is not transferable except after notice to the Division. The Division may require
modification or revocation and reissuance of the permit This permit does not affect the legal requirements to obtain
other permits which may be required by the Division of Water Quality or permits required by the Division of Land
Resources, the Coastal Area Management Act or any other Federal or Local governmental permit that may be
required. If you have any questions concerning this permit, please contact Sergei Chemikov at telephone number
[phone], extension 594.
SincerelL/,�
Coleen H. Sullins
cc: NPDES Files
Winston-Salem Regional Office / Surface Water Protection
N. C. Division of Water Quality / NPDES Unit Phone: [phone]
1617 Mail Service Center, Raleigh, NC 27699-1617 fax: [phone]
Internet: h2o.enr.stale.nc.us DENR Customer Service Center.1800 623-7748

Permit NCO078115
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provisions of North Carolina General Statute 143-215.1, other lawful standards
and regulations promulgated and adopted by the North Carolina Environmental Management
Commission, and the Federal Water Pollution Control Act, as amended,
Aqua North Carolina, Inc.
is hereby authorized to discharge wastewater from a facility located at the
Greystone Subdivision WWTP
North of Kernersville
Forsyth County
to receiving waters designated as an Right Fork Belews Creek in the Roanoke River Basin in
accordance with effluent limitations, monitoring requirements, and other conditions set forth in Parts I,
II, III and IV hereof.
This permit shall become effective November 1, 2007.
This permit and authorization to discharge shall expire at midnight on February 29, 2012.
Signed this day September 24, 2007.
YV Coleen H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit NC0078115
SUPPLEMENT TO PERMIT COVER SHEET
All previous NPDES Permits issued to this facility, whether for operation or discharge are hereby
revoked, and as of this issuance, any previously issued permit bearing this number is no longer
effective. Therefore, the exclusive authority to operate and discharge from this facility arises under
the permit conditions, requirements, terms, and provisions included herein.
Aqua North Carolina, Inc. is hereby authorized to:
1. Continue to operate an existing 0.032 MGD package type wastewater treatment system.
The facility is located north of Kernersville at Greystone Subdivision in Forsyth County.
2. After receiving an Authorization to Construct permit from the Division, construct wastewater
treatment facilities not to exceed 0.185 MGD design flow.
3. After submitting an Engineer's Cetification, discharge from said treatment works at the location
specified on the attached map into Right Fork Belews Creek, classified as C waters in the Roanoke
River Basin.

Permit NCO078115
A. (1.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS
During the period beginning on the effective date of the permit and lasting until expiration or expansion,
the Permittee is authorized to discharge from outfall 001. Such discharges shall be limited and monitored
by the Permittee as specified below:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Avera a
Daily
Mlaximum
Measurement
Frequency
Sample Type
Sample Location
Flow
0.032 MGD
Continuous
Recording
Influent or Effluent
BOD, 5-day (20°C)
23.0 mg/L
34.5 mg/L
Weekly
Composite
Effluent
Total Suspended Solids
30.0 mg/L
45.0 mg/L
Weekly
Composite
Effluent
NH3 as N
(April I —October 31
2.0 mg/L
10.0 mg/L
Weekly
Composite
Effluent
NH3 as N
(November 1— March 31
4.0 mg/L
20.0 mg/L
Weekly
Composite
Effluent
Dissolved Oxygen
Weekly
Grab
Effluent,
Upstream &
Downstream
Fecal Coliform
(geometric mean)
200/100 mL
400/100 mL
Weekly
Grab
Effluent
Total Residual Chlorine
17 ug/L
2/Week
Grab
Effluent
Temperature CC)
Daily
Grab
Effluent
Temperature CC)
Weekly
Grab
Upstream &
Downstream
pH3
Weekly
Grab
Effluent
Footnotes:
1. Upstream = 20 feet from discharge point; Downstream = 0.01 mile from discharge point.
2. The daily average dissolved oxygen effluent concentration shall not be less than 5.0 mg/L.
3. 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. (2.) EFFLUENT LIMITATIONS AND MONITORING REQUIREMENTS Permit NC0078115
During the period beginning upon expansion and lasting until expiration, the Permittee is authorized to
discharge from outfall 001. Such discharges shall be limited and monitored by the Permittee as specified
below:
EFFLUENT
CHARACTERISTICS
LIMITS
MONITORING REQUIREMENTS
Monthly
Averse
Daily
Maximum
11'leasurement
Frequency
Sample Type
Sample Location
Flow
0.185 MGD
Continuous
Recording
Influent or Effluent
BOD, 5-day (20°C)
5.0 mg/L
7.5 mg/L
Weekly
Composite
Effluent
Total Suspended Solids
30.0 mg/L
45.0 mg/L
Weekly
Composite
Effluent
NH3 as N
(April 1— October 31
2.0 mg/L
10.0 mg/L
Weekly
Composite
Effluent
NH3 as N
(November I — March 31
4.0 mg/L
20.0 mg/L
Weekly
Composite
Effluent
Dissolved Oxygen
Weekly
Grab
Effluent,
Upstream &
Downstream
Fecal Cohform
(geometric mean)
200/100 mL
400/100 mL
Weekly
Grab
Effluent
Total Residual Chlorine
28 ug/L
2/Week
Grab
Effluent
Temperature CC)
Daily
Grab
Effluent
Temperature CC)
Weekly
Grab
Upstream &
Downstream
pH
Weekly
Grab
Effluent
�]
Footnotes:
1. Upstream = 20 feet from discharge point; Downstream = 0.18 mile from discharge point.
2. The daily average dissolved oxygen effluent concentration shall not be less than 5.0 mg/L.
3. 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

?orth Carolina
k3rsyth County
AFFIDAVIT OF PUBLICATION
Before the undersigned, a Notary Public of said County and State, duly commissioned, qualified, and
authorized by law to administer oaths, personally appeared Andrea Moses who being first duly sworn,
deposes and says: that she is Accounts Receivable Clerk of The Winston Salem Chronicle Publishing
Company, engaged in the publishing of a newspaper known as The Chronicle, published issued and
entered as second-class mail in the City of Winston Salem, North Carolina in said County and State: that
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 the The Chronicle, on the following dates:
PUBLIC NOTICE
NOTIFICATION OF INTENT TO ISSUE A NPDES WASTEWATER PERMIT
PUBLISHED JULY 19, 2007
and that the said newspaper in which such notice, paper, document, or legal advertisement was published
was, at the time of each and every subscription, a newspaper meeting all of the requirements and
qualifications of Section 1-597 of the General Statutes of.North Carolina and was a qualified newspaper
within the meaning of Section 1-597 of the General Statutes of North Carolina. /I ,
This 19anday of July 2007 , OC4 yf/J,y1 , ,gyp
E
Paul�ette H Lewle Signature of person making affidavit)
Notary Pudic Andrea Moses
For" Counly
North CaroWa
mmission rss2/22/20111
Sworn to and subscribed before me this 191hday of Julv 2007
(Notary Public)
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FACT SHEET FOR NPDES PERMIT DEVELOPMENT
Greystone Subdivision WWTP
NPDES No. NC0078115
Facility Information
Applicant/Facility
Name:
Greystone Subdivision
Permitted Flow
0.185 MGD
Type of Waste:
100% Domestic
County:
Forsyth
Miscellaneous
Receiving Stream:
Right Fork
Belews Creek
Dean Creek
Regional
Office:
Winston-Salem
Stream Classification:
Stream Index Number:
22-27-3
Quad
C18NE
303 d Listed?:
No
Permit writer:
Ser ei Chernikov
Subbasin:
03 02 01
Date:
6 25 07
Drainage Area mil :
2.65
AOW
Summer 7Q10 cfs
0.3445
Winter 7Q 10 cfs :
0.66
Average Stream Flow cfs :
2.65
IWC % at Permitted Flow:
45
SUMMARY:
The Greystone Subdivision has an existing discharge on an unnamed tributary to
Belews Creek. The facility is requesting an expansion and outfall relocation to a point
further downstream. In the EAA, this stream is referred to as a UT to Belews Creek,
however BIMS refers to this segment as Right Fork Belews Creek (Deans Creek). This
is a C class stream from its source to its confluence with Belews Creek. This stream
is not 303(d) listed and there were no restrictions noted in the basin plan.
The EAA for expansion (from 0.032 MGD to 0.185 MGD) and relocation was reviewed
and approved on February 27, 2007. The Level B model was developed on 06/25/07.
COMPLIANCE SUMMARY:
DMRs have been reviewed for the period January 2002 through April 2007. Facility
has a negaive compliance record. During the review period, the following NOVs
(notices of violation) have been issued: 03/07 - broken off effluent pipe section in the
stream and no current annual report, 9/25/06 - NH3, 06/23/06 - NH3, 02/07/06 -
monitoring frequency violation for a number of parameters, 02/ 10/05 -
records/reports violation, 08/06/04 - NH3, 06/14/04 - NH3, 11/17/03 - fecal,
l l/ 14/02 - illegal sludge disposal.
INSTREAM MONITORING:
histream monitoring is required for temperature and dissolved oxygen, fecal coliform,
and conductivity. Monitoring is conditionally waived based on the participation in the
Yadkin -Pee Dee Monitoring Coalition. An analysis of DO and temperature data showed
that the facility has a very minor impact on DO and temperature of the stream. There
were no violation of DO instream standard during the past 3 years.
Greystone Subdivision W WTP — NCO078115
Page 1

PROPOSED CHANGES:
• Limits: Based on the Level B model a new BOD limit has been developed for an
expansion phase.
PROPOSED SCHEDULE FOR PERMIT ISSUANCE:
Draft Permit to Public Notice: July 18, 2007 (est.)
Permit Scheduled to Issue: August 31, 2007 (est.)
STATE CONTACT:
If you have any questions on any of the above information or on the attached permit,
please contact Sergei Chernikov at [phone] ext. 594.
REGIONAL OFFICE COMMENT:
DATE:
Greystone Subdivision WWTP — NCO078115
Page 2

LEVEL B Model
FACT SHEET FOR PERMIT LIMIT DEVELOPMENT
Greystone Subdivision WWTP
NPDES No. NCO078115
Facility Information
Applicant/FacilityName:
Greystone Subdivision
Permitted Flow
0.185 MGD
Type of Waste:
100% Domestic
County:
Forsyth
Miscellaneous
Receiving Stream:
Right Fork
Belews Creek
(Dean Creek)
Regional Office:
Winston-Salem
Stream Classification:
Stream Index Number:
22_27-3
Quad
C18NE
303(d) Listed?:
No
Level B modeler:
To a Fields
Subbasin:
03 02 01
Date:
6/25/07
Drainage Area mi2):
2.65
%
Summer 7Q10 (cfs)
0.3445
Winter 7Q10 (cfs):
0.66
Avera a Stream Flow (cfs):
2.65
IWC (%) at Permitted Flow:
45
ANALYSIS AND DISCUSSION:
The Greystone Subdivision has an existing discharge on an unnamed tributary to Belews Creek. The
facility is requesting an expansion and outfall relocation to a point further downstream. In the EAA, this
stream is referred to as a UT to Belews Creek, however BIMS refers to this segment as Right Fork Belews
Creek (Deans Creek). This is a C class stream from its source to its confluence with Belews Creek. This
stream is not 303(d) listed and there were no restrictions noted in the basin plan.
This facility currently has instream monitoring for dissolved oxygen and temperature. DMRs from 1/05
through 4/07 were reviewed for this expansion request. DO levels appear to be similar both upstream
and down, with values ranging from 7 mg/L to 14 mg/L.
USGS provided streamflow estimates for a station near the proposed discharge point (0206902635) and a
station further downstream at the confluence with Belews Creek (0206902640). The model predicted that
the current BOD limit (23 mg/L), a DO minimum of 5 mg/L, and an ammonia limit of 2 mg/L would
protect the instream DO standard. However that scenario resulted in a very high CBOD (16.76 mg/L) at
the discharge point that remained high 4 miles downstream (8.95 mg/L). The DO sag occurs
approximately 2 miles from the discharge point, and two wastewater -carrying tributaries merge with
Belews Creek 2.8 and 3.8 miles below the Greystone W WTP outfall. Although those dischargers were not
included in the model, it can be assumed that there may be some interaction considering the very low
streamflows in this area. Therefore the model was rerun with a BOD of 5 mg/L in an attempt to
minimize the CBOD contribution. The maximum CBOD at this scenario is 4.5 mg/L with an end CBOD
of 2.25 mg/L. Again, the DO sag occurs approximately 2 miles from the discharge point. At 2.8 miles,
where a wastewater -carrying tributary connects with Belews Creek, the predicted CBOD is
approximately 2.7 mg/L, which is very near background.
Greystone Subdivision W WTP - NCO078115
Level B Model
Page 1

c.
Based on the results of the model, recommended limits are as follows:
Effluent Characteristic
Effluent Limitations
Monthly Average
Daily Maximum
Flow
0.185 MGD
BODS
5.0 m /L
7.5 m /L
TSS
30 m /L
45 m /L
NH3 as N, Summer
2.0 m /L
10.0 m /L
NH3 as N, Winter
4.0 m /L
20.0 m /L
TRC
28 F /L
Fecal coliform (geometric mean)
200/100ml
400/100 mL
Dissolved Oxygen
> 5.0 m /L
STATE CONTACT:
Western NPDES Program - Level B Modeling Contact: Toya Fields, (919) 733 - 5083, ext. 551
Western NPDES Program - Permitting Contact: Sergei Chernikov, [phone], ext. 594
Greystone Subdivision W VTP - NCO078115
Level B Model
Page 2

MODEL INPUTS FOR LEVEL B ANALYSIS
GENERAL INFORMATION
Facility Name:
NPDES No.:
A&I 0Q
_
Type of Waste:
O %
f
Facility Status:
_
x
Receiving Stream:
c lS
Stream Classification:
e
Subbasin:
O 0 1
County:
Regional Office:
€—,,
Topo Quad;
FLOW INFORMATION
USGS n
p o
-
10
— 0 Of
Date of Flow Estimates:
Drainage Area (mi2):
ly
Summer 7Q10 (cfs):
Winter 7Q10 (cfs):
Average Flow (cfs):
19, &S
30Q2 (cfs):
IWC at Point of Discharge (%):
Cummulative lWC (%):
MODEL INPUT INFORMATION
LENGTH OF REACH (miles)
Q, a
0
I ICRE1vfENTAL LENGTH (miles)
O, D
0•
WASTE CHARACPERISTICS
FLOW (MGD)
CBOD (mg/1)
NBOD (mg/1)
D.O. (mg/1)
RUNOFF CHARACTERISTICS
7Q10 (cfs/nu2)
QA (cfs/mil)
CBOD (mg/1)
NBOD (mg/1)
D.O. (mg/1)
TRIBUTARY CHARACTERISTICS
7Q10 (cfs)
QA (cfs)
G
CBOD (mg/1)
NBOD (mg/1)
D.O. (mg/1)
SLOPE (fpm)
7
Name of facility

06 a
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SUMMER
CBOD 7.5 DO 5 NBOD 9
MODEL RESULTS
Discharger
:
GREYSTONE SUBDIVISION
Receiving Stream :
UT TO BELEWS CREEK
----------------------------------------------------------------------
The End D.O.
is 7.43
mg/l.
The End CBOD
is 2.25
mg/l.
The End NBOD
----------------------------------------------------------------------
is 1.69
mg/l.
WLA
WLA
WLA
DO Min
CBOD
NBOD
DO
Waste Flow
(mg/1)
Milepoint Reach #
(mg/1)
(mg/1)
(mg/1)
--
(mgd)
----------
Segment 1
------
6.33
----------------
0.00 1
----
----
Reach 1
7.50
9.00
5.00
0.18500
Reach 2
0.00
0.00
0.00
0.00000
Reach 3
0.00
0.00
0.00
0.00000
Reach 4
0.00
0.00
0.00
0.00000

SUMMER
CBOD 7.5 DO 5 NBOD 9
Seg #
Reach #
Seg Mi
D.O.
CBOD
NBOD
Flow
1
1
0.00
6.33
4.50
4.63
0.63
1
1
0.05
6.64
4.46
4.58
0.63
1
1
0.10
6.88
4.42
4.52
0.63
1
1
0.15
7.08
4.39
4.46
0.63
1
1
0.20
7.24
4.35
4.41
0.63
1
1
0.25
7.36
4.32
4.35
0.63
1
2
0.21
7.36
4.32
4.35
0.63
1
2
0.26
7.37
4.28
4.31
0.63
1
2
0.31
7.38
4.25
4.27
0.63
1
2
0.36
7.39
4.22
4.23
0.63
1
2
0.41
7.40
4.19
4.18
0.63
1
2
0.46
7.41
4.15
4.14
0.63
1
2
0.51
7.42
4.12
4.10
0.63
1
2
0.56
7.43
4.09
4.06
0.63
1
2
0.61
7.44
4.06
4.03
0.63
1
2
0.66
7.45
4.03
3.99
0.63
1
2
0.71
7.45
4.00
3.95
0.63
1
2
0.76
7.46
3.97
3.91
0.63
1
2
0.81
7.47
3.94
3.87
0.63
1
3
0.79
7.47
3.94
3.87
0.63
1
3
0.84
7.44
3.91
3.83
0.63
1
3
0.89
7.41
3.88
3.78
0.63
1
3
0.94
7.38
3.85
3.74
0.63
1
3
0.99
7.35
3.81
3.70
0.63
1
3
1.04
7.33
3.78
3.65
0.63
1
4
1.04
7.34
3.58
3.35
0.71
1
4
1.14
7.31
3.52
3.27
0.71
1
4
1.24
7.28
3.47
3.20
0.71
1
4
1.34
7.26
3.41
3.13
0.71
1
4
1.44
7.25
3.36
3.05
0.71
1
4
1.54
7.23
3.31
2.99
0.71
1'
4
1.64
7.22
3.26
2.92
0.71
1
_ ___ 4
1._74 -
7.22
3.21
2.85
0.71
�r 1-
1
4
4
1.84
1.94
7.21
7.21
3.16
3.11
2.79
2.73
0.71
0.71 V
1
4
7.21
3.06
2.67
0.71
1
4
_2.04
2.14
--_--_-7.2.2_-__-_
.3 D2 ------2-
' -61
- -- 0.71-:-
1
4
2.24
7.22
2.97
2.55
0.71
1
4
2.34
7.23
2.92
2.49
0.71
1
4
2.44
7.24
2.88
2.43
0.71
1
4
2.54
7.24
2.83
2.38
0.71
1
4
2.64
7.25
2.79
2.33
0.71
1
4
2.74
7.26
2.75
2.27
0.71
1
4
2.84
7.28
2.71
2.22
0.71
1
4
2.94
7.29
2.66
2.17
0.71
1
4
3.04
7.30
2.62
2.12
0.71
1
4
3.14
7.31
2.58
2.08
0.71
1
4
3.24
7.32
2.54
2.03
0.71
1
4
3.34
7.34
2.50
1.98
0.71
1
4
3.44
7.35
2.47
1.94
0.71
1
4
3.54
7.36
2.43
1.90
0.71
1
4
3.64
7.38
2.39
1.85
0.71
1
4
3.74
7.39
2.35
1.81
0.71
1
4
3.84
7.41
2.32
1.77
0.71
1
4
3.94
7.42
2.28
1.73
0.71
1
4
4.04
7.43
2.25
1.69
0.71

*** MODEL SUMMARY DATA ***
Discharger : GREYSTONE SUBDIVISION Subbasin 030201
Receiving Stream : UT TO BELEWS CREEK Stream Class: C
Summer 7Q10 : 0.344 Winter 7Q10 : 0.66
Design Temperature: 25.0
VELOCITY
Kd
Ka
Ka
------------
IeHl
-------------------------------------------------------------------
$VELOVELOCITYD�lil
ft/mI
I ftdesgn
�20°
design
II
�20°
design
l�l
I
Segment
1
I 0.27I
37.00I
0.178
10.49
10.48 10.38
I13.21 111.85I
0.73
Reach
--------------------------------------------------------------------------------
1
Segment
1
I 0.64I
15.60)
0.138
10.55
10.35 10.28
14.34 I
3.89I
0.44
Reach
--------------------------------------------------------------------------------
2
Segment
1
I 0.27I
8.60I
0.117
10.60
10.30 (
0.24
12.01 I
1.80I
0.44
Reach
--------------------------------------------------------------------------------
3
Se9ment
1
I 3.00I
8.601
0.119
10.63
10.30 10.24
( 2.05 I
1.831
0.44
Reach 4
Flow
cfs
Segment 1
Reach 1
Waste
0.287
Headwaters
0.344
Tributary
0.000
* Runoff
0.000
Segment 1 Reach 2
Waste 0.000
Tributary 0.000
* Runoff 1 0.000
Segment 1 Reach 3
Waste 0.000
Tributary 0.000
* Runoff 0.000
Segment 1 Reach 4
Waste 0.000
Tributary 0.083
* Runoff 0.000
m3/D I m9/1D
I mg/1
7.500
9.000
5.000
2.000
1.000
7.440
2.000
1.000
7.440
2.000
1.000
7.440
0.000
0.000
0.000
2.000
I
1.000
I
7.440
2.000
1.000
7.440
0.000
0.000
0.000
2.000
1.000
7.440
2.000
1.000
7.440
0.000
0.000
0.000
2.000
I
1.000
I
7.440
2.000
1.000
7.440

6-
MODEL RESULTS
WINTER
CBOD 7.5 DO 5 NBOD 18
Discharger
:
GREYSTONE SUBDIVISION
Receiving Stream :
UT TO BELEWS CREEK
----------------------------------------------------------------------
The End D.O.
is 9.70
mg/l.
The End CBOD
is 2.56
mg/l.
The End NBOD
----------------------------------------------------------------------
is 4.06
mg/l.
WLA
WLA
WLA
DO Min
CBOD
NBOD
DO
Waste Flow
(mg/1)
Milepoint Reach #
(mg/1)
(mg/1)
(mg/1).
(mgd)
Segment 1
------
7.98
----------------
0.00 1
----
----
--
----------
Reach 1
7.50
18.00
5.00
0.18500
Reach 2
0.00
0.00
0.00
0.00000
Reach 3
0.00
0.00
0.00
0.00000
Reach 4
0.00
0.00
0.00
0.00000

Seg #
Reach #
Seg Mi
1
1
0.00
1
1
0.05
1
1
0.10
1
1
0.15
1
1
0.20
1
1
0.25
1
2
0.21
1
2
0.26
1
2
0.31
1
2
0.36
1
2
0.41
1
2
0.46
1
2
0.51
1
2
0.56
1
2
0.61
1
2
0.66
1
2
0.71
1
2
0.76
1
2
0.81
1
3
0.79
1
3
0.84
1
3
0.89
1
3
0.94
1
3
0.99
1
-- 3
1.04
- ---
1
_
4
1.04
1
4
1.14
`1
_
4
_
1.24
1
4
1.34
1
4
1.44
1
4
1.54
1
4
1.64
1
4
1.74
1
4
1.84
1
4
1.94
1
4
2.04
1
4
2.14
1
4
2.24
1
4
2.34
1
4
2.44
1
4
2.54
1
4
2.64
1
4
2.74
1
4
2.84
1
4
2.94
1
4
3.04
1
4
3.14
1
4
3.24
1
4
3.34
1
4
3.44
1
4
3.54
1
4
3.64
1
4
3.74
1
4
3.84
1
4
3.94
1
4
4.04
D.O. 1 CBOD
7.98
3.67
8.33
3.65
8.62
3.64
8.86
3.62
9.06
3.60
9.23
3.59
9.23
3.59
9.28
3.58
9.32
3.56
9.36
3.55
9.40
3.54
9.44
3.52
9.47
3.51
9.50
3.50
9.53
3.49
9.56
3.47
9.58
3.46
9.60
3.45
9.63
3.44
9.63
3.44
9.62
3.42
9.62
3.41
9.61
3.40
9.61
3.38
91E0_ __
3-.-37
9.56
3.17
9.56 ____3-.-15--
9.57
3.13
9.57
3.10
9.58
3.08
9.58
3.06
9.59
3.04
9.59
3.02
9.60
3.00
9.60
2.97
9.61
2.95
9.61
2.93
9.61
2.91
9.62
2.89
9.62
2.87
9.63
2.85
9.63
2.83
9.64
2.81
9.64
2.79
9.65
2.77
9.65
2.75
9.66
2.73
9.66
2.71
9.67
2.69
9.67
2.68
9.68
2.66
9.68
2.64
9.68
2.62
9.69
2.60
9.69
2.58
9.70
2.56
WINTER
CBOD 7.5 DO 5 NBOD 18
NBOD
Flow
6.15
0.95
6.12
0.95
6.10
0.95
6.08
0.95
6.05
0.95
6.03
0.95
6.03
0.95
6.01
0.95
5.99
0.95
5.97
0.95
5.95
0.95
5.94
0.95
5.92
0.95
5.90
0.95
5.88
0.95
5.86
0.95
5.84
0.95
5.83
0.95
5.81
0.95
5.81
0.95
5.79
0.95
5.77
0.95
5.75
0.95
5.72
0.95
5.70
0.95_
5.01
1.11 i
4.9-8-------
--1.11--
4.94
1.11
4.91
1.11
4.87
1.11
4.84
1.11
4.81
1.11
4.77
1.11
4.74
1.11
4.71
1.11
4.67
1.11
4.64
1.11
4.61
1.11
4.58
1.11
4.54
1.11
4.51
1.11
4.48
1.11
4.45
1.11
4.42
1.11
4.39
1.11
4.36
1.11
4.33
1.11
4.30
1.11
4.27
1.11
4.24
1.11
4.21
1.11
4.18
1.11
4.15
1.11
4.12
1.11
4.09
1.11
4.06
1.11

*** MODEL SUMMARY DATA ***
Discharger : GREYSTONE SUBDIVISION Subbasin 030201
Receiving Stream : UT TO BELEWS CREEK Stream Class: C
Summer 7Q10 : 0.344 Winter 7Q10 : 0.66
Design Temperature: 14.0
VELfps OCITY
Dft�ldesignl
Kd
Ka
Ka
------------
ILmi.leHl
-------------------------------------------------------------------
ft/mil
(
c�20°
Idesignl
�20°
IdesMignl
Segment
1
I 0.27I
37.00I
0.241
10.51
( 0.33 10.44
I14.09 116.06I
0.32
Reach
--------------------------------------------------------------------------------
i
Segment
i
I 0.64I
15.60I
0.188
10.58
10.23 10.30
14.63 I
5.27)
0.19
Reach
--------------------------------------------------------------------------------
2
Segment
i
I 0.27I
8.60I
0.158
10.63
10.19 10.25
12.15 I
2.44I
0.19
Reach
--------------------------------------------------------------------------------
3
Segment
i
I 3.00I
8.601
0.165
10.67
10.19 10.25
12.24 I
2.55I
0.19
Reach 4
9
Flow
cfs
Segment 1
Reach 1
Waste
0.287
Headwaters
0.660
Tributary
0.000
* Runoff
0.000
Segment 1 Reach 2
Waste 0.000
Tributary 0.000
* Runoff 0.000
Segment 1 Reach 3
Waste 0.000
Tributary 0.000
* Runoff 0.000
Segment 1 Reach 4
Waste 0.000
Tributary 0.163
* Runoff 0.000
mJ/D I 9/1 I m9/1
7.500
18.000
5.000
2.000
1.000
9.280
2.000
1.000
9.280
2.000
1.000
9.280
0.000
0.000
0.000
2.000
1.000 I
9.280
2.000
1.000
9.280
0.000
0.000
0.000
2.000
1.000
( I
9.280
2.000
1.000
9.280
0.000
0.000
0.000
2.000
I
1.000
I
9.280
2.000
1.000
9.280

NC DENR - DIVISON OF WATER QUALITY
.0313 ROANOKE RIVER BASIN
2B .0300
class
Name of Stream Description Class Date Index No.
Belews Creek (Kernersville From a point 0.5 mile WS-IV;CA
Lake) upstream of backwaters of
Kernersville Lake to Town
of Kernersville Water
Supply Dam
Belews Creek From Town of Kernersville C
Water Supply Dam to Forsyth
County SR 1966 Extension
Right Fork Belews Creek From source to Belews Creek C
(Dean Creek)
ree From source to Belews Creek C
Left Fork Belews Creek From source to Belews Creek C
Belews Creek (Belews Creek From backwaters of Belews B
Arm of Belews Lake below Lake (Forsyth County SR
elevation 725) 1966 Extension) to Southern
Railroad Bridge
Belews Creek (including From Southern Railroad C
Belews Lake below elevation Bridge to to a point 1.8
725) (1) mile downstream of
Forsyth -Stokes County Line
Belews Creek (including From a point 1.8 mile WS-IV
Belews Lake below elevation downstream of the
725) (1) Forsyth -Stokes County Line
to Dan River, excluding the
Arm of Belews Lake
described below which are
classified WS-IV&B
08/03/92 22-27-(1.5)
09/01/57 22-27-(2)
07/01/73 22-27-3
07/01/73 22-27-4
07/01/73 22-27-5
07/01/73 22-27-(6)
08/01/98 22-27-(7)
08/01/98 22-27-(7.5)
East Belews Creek From source to Forsyth C 09/01/57 22-27-8-(1)
County SR 2140 (Formerly
called SR 1971)
East Belews Creek (East From backwaters of Belews B 07/01/73 22-27-8-(2)
Belews Creek Arm of Belews Lake (Forsyth County SR
Lake below elevation 725) 2140) to Southern Railroad
Bridge
Kings Creek
From source to East Belews
B
07/01/73
22-27-8-3
Creek Arm of Belews Lake
West Belews Creek (Little
From source to backwaters
C
09/01/57
22-27-9-(1)
Belews Creek)
of Belews Lake (2000 feet
upstream from N.C. Hwy. 65)
West Belews Creek (Little
From backwaters of Belews
B
07/01/73
22-27-9-(2)
Belews Creek) (West Belews
Lake (2000 feet upstream
Creek Arm of Belews Lake
from N.C. Hwy. 65) to
below elevation 725)
Southern Railroad Bridge
West Belews Creek (West
From Southern Railroad
C
08/01/98
22-27-9-(3)
Belews Creek Arm of of
Bridge to a point 0.4 mile
Belews Lake below elevation
downstream of Powerplant
725)
P

NC0078115
Facility: Greystone Subdivision WWTP
Discharge to: C
Residual Chlorine
F DESIGNL
DESIGN FLOW (MGD) Yl
DESIGN FLOW (CFS)
STREAM STD (UG/L)
UPS BACKGROUND LEVEL (UG/L)
IWC (%)
Allowable Cone. (ug/1)
Fecal Limit
Ratio of 1.2 :1
Ammonia as NH3
(summer)
0.3445 / 7Q10 (CFS)
0.185 �/ DESIGN FLOW (MGD)
820 675 DESIGN FLOW (CFS)
17.0 STREAM STD (MG/L)
0 UPS BACKGROUND LEVEL (MG/L)
,45� IWC (%)
/* Allowable Concentration (mg/1)
Ammonia as NH3
(winter)
7Q10(CFS)
200/100ml DESIGN FLOW (MGD)
DESIGN FLOW (CFS)
STREAM STD (MG/L)
UPS BACKGROUND LEVEL (MG/L)
IWC (%)
Allowable Concentration (mg/I)
For Minor domestic -type facilities:
Minimum of 2 mg/I (summer) NH3-N; 4 mg/I (winter) NH3-N
Chlorine:
Residual chlorine must be capped at 28 ug/I to protect for acute toxicity effects
0.3445
0.185
0.28675
1.0
0.22
45.43
1.94
0.66
0.185
0.28675
1.8
0.22
30.29
5.44

Belews Creek tributary site ... Re: Record station verification
Subject: Belews Creek tributary site ... Re: Record station verification
From: John C Weaver <[e-mail]>
Date: Tue, 15 May 2007 11:39:06 -0400
To: Toya Fields <[e-mail]>
CC: [e-mail], [e-mail], Chad R Wagner <[e-mail]>,
Jeanne C Robbins <[e-mail]>, John C Weaver <[e-mail]>
Toya,
I apologize for your confusion. A review of the my email to Mr. Hatton (dated 07/13/2005) and our site
files indicates a mistake on my part when typing the email. The site number should have been listed as
0206902635. The "6" digit located 3 numbers from the right side was omitted. Again, please accept my
apologies for the confusion this caused.
Sta. 0206902635 -- Belews Creek tributary at SR 2014 near Kernersville, drainage area 2.65 sgmi, lat/long
361027/800505
Hope this clarification helps with this situation.
This matter highlights the need for some kind of effort to update and replace the files your office uses. In
February 2006, 1 met with Jackie Nowell and Teresa Rodriguez to talk about the files being used by the
DWQ staff. As I recall, the printout of sites and flow statistics in your office has a 1997 or 1998 date
written on top. But I have not provided a mass listing of site attributes and flow statistics in the years that I
have done low -flow estimates. So it's somewhat of a puzzling issue as to exactly where the file originated.
The future solution to this issue will be tied into the development and implementation of a StreamStats
application for North Carolina. Below is a link to an online description of StreamStats with further links to
those states where applications have gone public. Based on my understanding, a proposal is in the works
to develop a pilot StreamStats application for the Pigeon River basin in western North Carolina.
http://water.usgs.gov/osw/streamstats/index.html
Nevertheless, it would be helpful to develop some kind of effort to create an online listing of the low -flow
statistics that have been published or otherwise provided through previous requests.
Further, the current low -flow frequency relations (USGS Water -Supply Paper 2403) for ungaged sites are
based on data through 1987. And there is now a need to consider an updated regionalization study for
low -flow frequency.
I will be glad to meet with your staff as discussed yesterday to further talk about low -flow issues,
StreamStats, and other matters that may be of interest to you.
Thank you.
Curtis Weaver
***********************************************************************
J. Curtis Weaver, Hydrologist, PE
USGS North Carolina Water Science Center
1 of 2 6/4/2007 4:51 PM

Belews Creek tributary site ... Re: Record station verification
a J.
3916 Sunset Ridge Road
Raleigh, NC 27607
Telephone: [phone] // Fax: [phone]
E-mail address -- [e-mail]
Internet address -- http://nc.water.usgs.gov/
***********************************************************************
Toya Fields <[e-mail]> To John C Weaver <[e-mail]>
cc
05/09/2007 05:22 PM
Subject Record station verification
Hi Curtis,
We have a request for a permit expansion in-house and in the package is
an email from you to a consultant in 2005. The person's name is Jerry
Hatton and they were asking about flows for an unnamed tributary to
Belews Creek in the Roanoke River Basin. The lat/long for the proposed
discharge point is 36 10 24/ 80 05 04•(however I don't believe they had
an exact lat/long for you at the time).
In the email you mention that a nearby partial record station is
"020690235 - Belews Creek tributary at SR 2014 near Kernersville" and
that the drainage area for that record station is 2.65 sgmi. I was able
to find a record station id 02069023_*3*_5 with a similar name. However
it is on Belews Creek and not the unnamed tributary to Belews Creek.
But the drainage area for that station (according to our records) is
6.79 sgmi (not 2.65 sgmi). I'm not quite sure if it was a simple
oversight or if our records are wrong and are missing this information.
The closest record stations that I can find to this location are
0206902628- Belews Creek Trib nr Crims Crossroads and 0206902616 -
Belews Creek Trib nr Talley's Crossing. They are two small tribs that
merge shortly before the proposed discharge location. By looking at the
drainage areas for those tribs, it looks like the DA for the point of
interest would probably be about 2.6 sgmi. So that makes me think that
the information we have is just very outdated.
Any thoughts?
Thanks for your help,
Toya
Toya Fields - [e-mail]
Environmental Engineer I
Western NPDES Program
Division of Water Quality
Tel: [phone] x 551
Fax: [phone]
2 of 2 6/4/2007 4:51 PM

Low -flow characteristics of Belews Creek tributary site (Sta. 020690...
Subject: Low -flow characteristics of Belews Creek tributary site (Sta. 0206902635) ... Re: Belews Creek tributary site ... Re: Record station verification
From: John C Weaver <[e-mail]>
Date: Wed, 13 Jun 2007 16:02:20 -0400
To: Toya Fields <[e-mail]>
CC: John C Weaver <[e-mail]>
Toya,
In response to your inquiry about the low -flow characteristics for a Belews Creek tributary site (station id 0206902635) in northeastern Forsyth County, the following information is
provided:
The Information that was provided to Mr. Hatton (via email dated July 13, 2005) was based on low -flow characteristics at several nearby sites within the Yadkin River basin in
northeastern Forsyth County, which were published in USGS Water -Supply Paper 2403, 'Low -flow characteristics of streams in North Carolina' (Giese and Mason, 1993).
An online version of the report is available through http://pubs.er.usgs.gov/usgspubslwsp/wsp2403. The report provides the low -flow characteristics (based on data through 1988) via
regional relations and at -site values for sites with drainage basins between 1 and 400 sgmi and not considered or known to be affected by regulation and/or diversions.
httpJ/pubs.er.usgs.gov/usgspubs/wrVwri964154
Please note that while a basinwide low -flow report for the Roanoke basin was published in 1996 (available online at httpJ/pubs.er.usgs.govlusgspubs/w Vwr!964154), consideration of
available nearby data and underlying geology make the information provided in WSP 2403 more appropriate for assessing tow -flow characteristics at streams in upper Belews Creek
basin.
FYI ... If you access either report, please note the online report files are provided in the '.QJVU' format and require a particular Uzardtech plug-in, also available through a link
displayed on the page. Or you can click an adjacent link that will allow you to view the report as a group of images without the need for a plug-in.
Getting back to your first question, the same nearby sites referenced for the 7Q10 and 3002 yields provided to Mr. Hatton indicate that W7010 low -flow yields range from about 0.25
to 0.33 cfsm. The same report (WSP 2403) indicates that annual average discharge yields are 1.0 cfsm for this area.
With regard to your question about site 0206902620, 1 cannot find a reference to that site number in our files. You cited a drainage area of 3.39 sgmi, and the only site listed in my
files with a similar drainage area is 0206902640. Belews Creek tributary 2 at mouth near Belews Creek (latRong of 361124 800512, drainage area 3.29 sgmi), downstream of station
0206902635. Please note location of this site as shown in the embedded map image below.
In my email to Mr. Hatton, I mentioned that streamflow information is limited in this area. Therefore, in the absence of any other data or information, the yields from the nearby sites in
Yadkin basin can be used.
Hope this information is helpful.
Thank you.
Curtis Weaver
..............„„.....................................................
J. Curtis Weaver, Hydrologist, PE
USGS North Carolina Water Science Center
3916 Sunset Ridge Road
Raleigh, NC 27607
Telephone: [phone] // Fax: [phone]
E-mail address -- [e-mail]
Internet address -- http://nc.water.usgs.gov/
.......................................................................
1 of 3 6/20/2007 3:25 PM

Low -flow characteristics of Belews Creek tributary site (Sta. 020690...
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,
Toys Fields cloya.fieldsltnamail.net> To John C Weaver <wweaverOwegs.gov>
OFVapil 7 11:10 A
Thank. Curtis
CC
Subject Re: Belea/s Creek tributary sde...Re: Record staUrn vedlk:ation
I forwarded your ma ... 1. to my supervisor tsusen Wflsani so hopefully we
..a d—on. aame ¢cau ties to rhie ettac r. Thanks for your thought..
Do you have —wage Claid and wiser 7g10 'laid for ao.uan am69026351
Your previous mail o Wr Hatton had summer 7010 and 3092 yields.
Ale., d0 you have amy flaw information for .tell.. am690i6]Or Ideally
f'd like to nave summer and winter 7010s and average yields. I have a
0A of 3.39 awu.re miles for that station.
Perhaps we can use the same yield. far both stations?
Thanks for your help, as always.
Tay.
Jahn C Weaver wrote:
Toy.
> I apologi Ee for your confusion. A review .f the my small co Xr.
a Katcan (dated 07/13120051 and 0 site files indicates a mistake an my
a part when typing the email. no site number should have been listed
ae 020690216.35. Me -6- digit located 3 numbers from the right side
emitted. Again, please accept my apologies for the confusion this
case
a Bta./1/6902635 -- eelewe Creek trlbutary at a. 3011 near
a Kernerwill , drainage at.. 3.65 egml, lablong 363027/a00505
> Hope this clarification helps with this situation.
> This matter highlights the need far some kind of effort to update and
a replace nhe file. your ofile. uses. In February 2006. I met with
2 of 3 6/20/2007 3:25 PM

Low -flow characteristics of Belews Creek tributary site (Sta. 020690...
> Jackie Nowell and Teresa Rodriguez to talk about the files being used
> > by the DWQ staff. As I recall, the printout of sites and flow
> statistics in your office has a 1997 or 1998 date written on top. But
> I have not provided a mass listing of site attributes and flow
> statistics in the years that I have done low -flow estimates. So it's
> somewhat of a puzzling issue as to exactly where the file originated.
>
> The future solution to this issue will be tied into the development
> and implementation of a StreamStats application for North Carolina.
> Below is a link to an online description of StreamStats with further
> links to those states where applications have gone public. Based on
> my understanding, a proposal is in the works to develop a pilot
> StreamStats application for the Pigeon River basin in western North
> Carolina.
> http://water.usgs.gov/osw/streamstats/index.html
> Nevertheless, it would be helpful to develop some kind of effort to
> create an online listing of the low -flow statistics that have been
> published or otherwise provided through previous requests.
> Further, the current low -flow frequency relations (USGS Water -Supply
> Paper 2403) for engaged sites are based on data through 1987. And
> there is now a need to consider an updated regionalization study for
> low -flow frequency.
> I will be glad to meet with your staff as discussed yesterday to
> further talk about low -flow issues, StreamStats, and other matters
> that may be of interest to you.
> Thank you.
> Curtis Weaver
> ffffflffff ffffffffl ff ff Rfffffffff Rf RffflffRllffff 1f 1f1ff 1ff 1ff11flefef!
> J. Curtis Weaver, Hydrologist, PE
> USGS North Carolina Water Science Center
> 3916 Sunset Ridge Road
> Raleigh, NC 27607
> Telephone: [phone] // Fax: [phone]
> E-mail address -- jcweaver8usgs.gov
> Internet address -- http://nc.water.usgs.gov/
> ffRlff Rf Rff•Rffffflf Rffffiffllff♦11f•1ff lffllfff!!lffff••f lffffRf•lfff•
>
>
>
>
> "Toya Fields <toya.fields9ncmail.net>'
> 05/09/2007 05:22 PH
> To
> John C Weaver <jcweaver®usgs.gov>
> cc
> Subject
> Record station verification
> Hi Curtis,
> we have a request for a permit expansion in-house and in the package is
> an email from you to a consultant in 2005. The person's name is Jerry
> Hatton and they were asking about flows for an unnamed tributary to
> Belews Creek in the Roanoke River Basin. The lat/long for the proposed
> discharge point is 36 10 24/ 80 05 04 (however I don't believe they had
> an exact lat/long for you at the time).
> In the email you mention that a nearby partial record station is
> f020690235 - Belews Creek tributary at SR 2014 near Kernersville' and
> that the drainage area for that record station is 2.65 sgmi. I was able
> to find a record station id 02069023_f3'_5 with a similar name. However
> it is on Belews Creek and not the unnamed tributary to Belews Creek.
> But the drainage area for that station (according to our records) is
> 6.79 sgmi (not 2.65 sgmi). I'm not quite sure if it was a simple
> oversight or if our records are wrong and are missing this information.
> The closest record stations that I can find to this location are
> 0206902628- Belews Creek Trib nr Crims Crossroads and 0206902616 -
> Belews Creek Trib nr Talley's crossing. They are two small tribe that
> merge shortly before the proposed discharge location. By looking at the
> drainage areas for those tribe, it looks like the DA for the point of
> interest would probably be about 2.6 sgmi. So that makes me think that
> the information we have is just very outdated.
> Any thoughts?
>
> Thanks for your help,
> Toya
>
> Toya Fields - toya.fields8ncmail.net
> Environmental Engineer I
> Western NPDES Program
> Division of Water Quality
> Tel: [phone] x 551
> Fax: [phone]
>
Toya Fields - toya.fieldsgncmail.net
Environmental Engineer I
Western NPDES Program
Division of Water Quality
Tel: [phone] x 551
Fax: [phone]
3 of 3 6/20/2007 3:25 PM

Table 7. Magnitude and frequency of annual low -flow characteristics at partial -record streamflow gaging stations in the
Roanoke River Basin study area, North Carolina
[mil, square mile. water years, annual periods from October I to September 30: (ft3/s)/mi2, cubic feet per second per square mile: N/A, not available.]
x
-
Cn
g
m
0 E
c
c Station name
.o U.
N O
�
m
E
�-
C
Period of
record,
water years
Number of
measure-
ments
3
3 o
LL
N
C ,
E
c
ce
;
Q
Low flow characteristics
in cubic feet per second
o a c,
h Q) ~
14
02068720 Snow Creek near Prestonville
22.7
1955-56. 1964-68, 1970,
19
0
1.2
1.7
10.5
9.0
8.3
1980
23
02068904 Voss Creel: near Walnut Cove
4.99
1970, 1973-74
5
0
1.2
0.5
1.2
1.2
1.0
25
02068931 Mill Creek at Walnut Cove
9.86
1955-56, 1963
3
0
1.2
0.9
2.9
2.7
2.3
26
02069980 Town Fork Creek at Walnut Cove
113
1925, 1949-1957. 1959.
39
0
1.2
8.9
21.8
20.0
17.2
1961-63. 1966. 1970,
1973. 1974
3 _06�fQ est a evrs Creek near Walnut Cove
l_.0
1955,1959,-1963 ---- --- -
- ----3- ____
0
1.2
1.2
36
02069410 Big Beaver Island Creek near Madison
23.8
1953-59. 1961-63. 1966
29
0
1.2
1.0
5.6
4.9
4.0
40
02070558 Boaz Creek near Stoneville
2.48
1970, 1973
6
0
1.2
< 0.1
0.2
0.3
0.1
42
02070576 Mayo River tributary above SEO near
1.16
1970. 1973
6
0
1.2
< 0.1
0.2
0.2
0.1
Mayodan
47
02070720 Hogans Creek near Madison
23.9
1954. 1956-64. 1966
27
0
1.1
1.3
5.8
5.3
4.2
49
02070930 Jacobs Creek at NC 704 near Madison
36.2
1954. 1959. 1963-67,
13
0
1.1
1.7
8.1
7.0
5.4
1969, 1970
51
02071003 Rockhouse Creek near Wentworth
18.4
1954, 1959. 1963
3
0
1.0'
0.9
5.0
4.2
3.6
65
02074282 Wolf Island Creek at Reidsville
3.71
1954. 1970. 1973-74.
19
0
0.9
0.3
0.8
0.9
0.6
1976-81
67
02074360 Wolf Island Creek near Pelham
68.7
1954, 1956-64, 1966.
59
0
0.9
2.3
12.3
11.9
8.3
1968. 1970, 1974-79,
1981. 1983-84
71
02075090 Hogans Creek near Providence
98.4
1953-54. 1956-60, 1963,
29
2
0.9
1.2
10.4
9.5
6.0
1966. 1968, 1970
73
02075124 West Prong Moon Creek near Yanceyville
4.97
1959. 1963, 1966. 1968
4
0
0.9
0
1.2
1.2
0.6
74
02075142 East Prong Moon Creek near Yanceyville
7.15
1959. 1963. 1966. 1968
4
0
0.9
0
1.4
1.4
0.4
80
02075198 Dan River at Milton
2,328
1970. 1974. 1976-79
10
0
1.1
440
885
755
725
81 0207520780 Country Line Creek at SR 1146 near
6.58
1974-81
17
0
0.9
0.3
1.5
1.4
1.1
Ashland
82
02075208 Country Line Creek near Locust Hill
22.6
1959, 1963. 1966. 1968
4
0
0.9
0.5
2.6
2.3
1.7
86
02075230 South Country Line Creek near
6.57
1953, 1959, 1963, 1966.
6
5
0.9
20
N/A=
N/A'
N/A'-
Hightowers
1968, 1970
87
02075240 South Country Line Creek near Topnot
16.4
1962-69
20
8
0.9
0
0.1
< 0.1
< 0.1
88
02075250 Penson Creek near Yanceyville
12.2
1959, 1963-68. 1970
19
4
0.9
0
0.1
< 0.1
< 0.1
89
02(75260 South Country Line Creek near Yanceyville
29.0
1949-53. 1956-60,
33
4
0.9
0
0.2
0.2
< 0.1
1962-66,1969
91
02075270 Country Line Creek near Semora
131
1954, 1956-68, 1970.
372
1
0.9
0.7
7.0
5.9
4.0
1973-74. 1974-94
94 0207718130 Hyco Creek at SR 1767 near Baynes
5.00
1974-81
19
0
0.9
0
0.1
0
< 0.1
54 Low -flow Characteristics and Profiles for Selected Streams in the Roanoke River Basin, North Carolina

$ Table S. Summary of continuous- and partial -record gaging stations in the Roanoke River Basin study area in North Carolina where records of gage height and
strearnflow were collected (Continued)
S Emil. square mile: NIA, not applicable: SEO. sewage effluent oulfall. Sites shaded in gray indicate those sites for which low -Bow characteristics have been developed. Period of record for continuous -record
sites (site type 1) shown in months and years. period of record for partial -record sites (site type 2) shown is water years in which discharge measurements were made.]
Number of
measure-
uSGS uSGS Drainage Hydrologic ments for par-
4 downstream Station name Latitude Longitude County topographic area, Tributary unit Period of record ft-record
5 order number quad name (m12) to coda s� sites
tr rn
H Flow Zero -
flow
18 02069734 Dan River near Dodgetown
19 00-069762 Dan River near Walnut Cove
20 02068856 Town Fork Creek near Poplar Springs
21 02068891 Buffalo Creek at Gemtanton
22 02069892 Neatrnans Creek near Germanton
23 02068904 Voss Creek 'tear Walnut Cove
24 02069911 Old Field Creek near Walnut Cove
25 O''..A68931 Mills Creek at Walnut Cove
26 02068980 Town Fork Creek at Walnut Cove
27 02068988 Lick Creek at Walnut Cove
28 02069000 Dan River at Pine Hall
36124%" 80°0821" Stokes
36019'36" 80"05'44" Stokes
3601674" 80o16?r Stokes
36115'51" Mr13'47" Stokes
3V 16'58" Nr 15 26" Stokes
36016'45' 801131" Stokes
36"16'37' 80*1(Y05" Stokes
.W I T39" 80°08'5W Stokes
36°17'29" W0879" Stokes
36*17*10" W0813" Stokes
36019'09" 80°03'Ol" Stokes
Danbury
Belews Lake
King
Walnut Cove
King
walnut Cove
Walnut Cove
Walnut Cove
Walnut Cove
Walnut Cove
Belews Lake
29 02069032 Belews Creek at Belews Creek' 3601425"
80"04'10" Forsyth
Belews Creek
30 02069034 East Belews Creek near Grims Crossroads 36"12'20"
80002'57" Forsyth
Belews Creek
31 02069036 East Belews Creek naar Belews Creek' 36°14'20"
80.03W Forsyth
Belews Creek
335
Roanoke
03010103 2
1970
3
0
River
355
Roanoke
03010103 2
1970.1974
5
0
River
20.1
Dan River
03010103 2
1959. 1963. 1981
3
0
15.0
Town Fork
03010103 2
1959. 1963
2
0
Creek
17.0
Town Fork
03010103 2
1959. 1963. 1981
3
0
Creek
4.99
Town Fork
03010103 2
1970.197344
5
0
Creek
16.0
Town Fork
03010103 2
1959. 1963. 1981
3
0
Creek
9.86
Town Fork
03010103 2
1955-56. I%a
3
0
Creek
113
Dan River
0301010.2 2
1925,1949-1957. 1959.
39
0
1961-63. 1966, 1970.
1973,1974
13.5
Town Fork
03010103 2
1959. 1963. 1981
3
0
Creek
501
Roanoke
03010103 1
Oct 19'_'3 - Mar 1926.
NIA
NIA
River
Apr 1986 - Doc 1990.
Feb 1991
2
1975-77.1979-81.1983
33
0
22.8
Dan River
03010103 2
1959. 1963
2
0
5.52
Belews
03010103 2
1959.1963
2
0
Creek
16.9
Belews
03010103 2
1963
l
0
Creek

Table S. Summary of continuous- and partial -record gaging stations in the Roanoke River Basin study area in North Carolina where retards of gage height and
strearnflow were collected (Continued)
[mi'. square toile: N/A. not applicable: SEO. sewage effluent outfall. Sites shaded in gray indicate those sites for which low -flow characteristics have been developed. Period of record for continuous -record
sites ( site type 1) shown in months and years: period of record for partial -record sites (site type 2) shown is water years in which discharge measurements were made.)
Humber of
et
K
USGS
USGS
Drainage
Hydrologic
measure'
meats too par-
c
downstream Station name
Latitude
Longitude County topographle
area,
Tributary
�ary
unit
Period of record
�
t�sl ord
order number
quad name
(mil}
code R
N
ze
to
Flow flow
32
02069037 Belews Creek near Walnut Covet
360I5'56"
80.02'58" Stokes Belews Lake
41.9
Dan River
0-1010103 2
1955. 1959. 1963
3 0
33
02069044 West Belews Creek hoar walnut Covet
36.1632"
80.04'02" Stokes Belews lake
12.0
Belews
03010103 2
1955.1959. 1963
3 0
Creek
34
02069050 Belews Creek near Pine Hall
36.19'42"
80.01'42" Rockingham Belews Lake
72.2
Dan River
03010103 2
1953-60. 1962-63, 1966
26 0
35
02069222 Dan River at Madison Industrial Site
36-21-'29"
79.59'33" Rockingham Ellisboro
603
Roanoke
03010103 2
1970. 1974. 1976-77.
17 0
River
1979-81
36
02069410 Big Beaver island Creek near Madison
36.22'59"
79-S8751" Rockingham Mayodan
23.9
Dan River
03010103 2
1953-59. 1961.63. 1966
29 0
37
02069476 Little Beaver Island Creek at Madison
36*22*58"
79.58:56" Rockingham Mayodan
14.3
Big Beaver
03010103 2
1966
1 0
Island
Creek
38
02070500 Mayo River new Price
36.32W'
79°S9130" Rockingham Prix
2242
Dan River
03010103 1
Aug 1929 - Oct 1971.
WA N/A
Oct 1993 - Sept 1994
2 198).1985-93
IS 0
39
02070329 Pawpaw Creek near Stoneville
36.3020"
79*5750' Rockingham Prix
7.61 Mayo River
03010103 2 1954.1959. 1963
3 0
40
02070558 Boaz Creek hear Stoneville
36-27'48'
79.55 I8' Rockingham Mayodan
2.48 Mayo River
03010103 2 1970.1973
6 0
41
02070559 Boaz Creek below SEO near Stoneville
36*27*26'
7995545" Rockingham Mayodan
3.00 Mayo River
03010103 2 1970. 1973
6 0
42
02070576 Mayo River tributary above SEO near
36-27'00"
79-503" Rockingham Mayodan
1.16 Mayo River
03010103 2 1970, 1973
6 0
Mayodan
43
02070578 Mayo River tributary near Mayodan
36.2624"
79*55*52" Rockingham Mayodan
4.10 Mayo River
03010103 2 1970. 1973
6 0
44
02070599 Mayo River at Mayodan
36.24'27"
79.57'58" Rockingham Mayodan
2294 Dan River
03010103 2 1970.1973
5 0
a 45
02070609 Mayo River at mouth near Madison
36-23'32"
79057'11* Rockingham Mayodan
2297 Dan River
03010103 2 1970
3 0
ct
46
02070658 Hogans Creek at Ellisboro
36.20'16'
79.57'45" Rockingham Ellisboro
16.7 Dan River
03010103 2 1959. 1963
2 0
0
i 47
02070720 Hogans Creek near Madison
36.7-1- "
79.54'30" Rockingbam Mayodan
23.9 Dan River
03010103 2 1954. 1956-64.1966
27 0
.r 48
02070910 Jacobs Creek near Wentworth
36-20'54"
79.53' 14' Rockingham Ellisboro
16.4 Dan River
03010103 2 1963
1 0
0
Go 49
02070930 Jacobs C eck at NC 704 tzar Madison
36.22'46-
79"SZ36- Rockingham Mayodan
36.2 Dan River
03010103 2 1954. 1959,1963-67.
13 0
A
46
1969. I970

Table 6. Magnitude and frequency of annual low -flow characteristics at continuous -record streamflow gaging stations in the
Roanoke River Basin study area, North Carolina
[mi'-, square mile; O/s, cubic foot per second; PR, continuous -record gaging station having full period of record collected prior to 1950 or having less than
10 years of record of daily mean discharge, treated as a partial -record site where low -flow characteristics were developed using correlation techniques; R,
regulated flow; C. estimates based on correlation techniques; LP, estimates based on log -Pearson frequency distribution; U. unregulated flow; <, less than; G.
estimates based on best -fit curves developed graphically from the log -Pearson analyses.]
o
C
w
to
' Station name
=
0
to
0
,..
IM =
C
'j
2
c a
�°
c "
Z
41
tL
Number of
observed
days of flow
c
o
0 3 0
7 0 ''C' "
Q0 e9
LU I I =
J Cr
m
=
6
0
c A
of
p
m ,,_
Q
Low -flow characteristics
C1 O CY Cy.'C
t*-
3
o
6
r-
2
1
02068000 Dan River near Asbury. N.C.
71.4
PR
0
18
1.3
23
54
43
44
R
C
4
02068500 Dan River near Francisco, N.C.
129
1950-93
0
53
1.4
38
85
68
70
R
LP
28
02069000 Dan River at Pine Hall, N.C.
501
PR
0
5
1.3
80
190
165
160
R
C
38
02070500 Mayo River near Price. N.C.
242
1930-70
0
67
1.3
65
130
115
110
U
LP
50
02071000 Dan River near Wentworth. N.C.
1.035
1950-93
0
83
1.2
175
415
360
340
R
LF
56
02071500 Dan River at Eden. N.C.
1.133
PR
0
33
1.1
190
440
375
360
R
C
57
02074000 Smith River at Eden, N.C.
538
1950-93
0
765
1.2
175
290
215
250
R
LP
64
02074218 Dan River near Mayfield, N.C.
1.760
PR
0
7
1.2
375
750
650
640
R
C
68
02075000 Dan River at Danville. Va.
2.050
1950-93
0
102
1.1
425
810
700
685
R
LP
75
02075160 Moon Creek near Yanceyville. N.C.
32.8
1962-73
0
24
0.8
0.4
3.0
3.0
1.5
U
LP
93
02075500 Dan River at Paces. Va.
2,550
1951-93
0
98
1.1
460
920
810
750
R
LP
97
02077200 Hyco Creek near Leasburg, N.C.
45.9
1965-93
456
456
1.0
0
0.5
1.8
0.2
U
LP
111
02077230 South Hyco Creek near Hesters
31.7
PR
15
15
0.9
0
1.4
0.8
0.5
U
C
Store, N.C.
113
02077240 Double Creek near Roseville, N.C.
7.47
1965-74,
10
58
1.0
< 0.1
0.6
0.6
0.5
U
G
1977-81
114
02077250 South Hyco Creek near Roseville.
56.5
1967-77
98
98
1.1
0
2.5
1.5
1.0
U
G
N.C.
131
02077300 Hyco River at McGehees Mill,
198
PR
N.C.'
132
02077303 Hyco River below Afterbay dam
202
1974-86,
near McGehees Mill, N.C.
1989-93
140
02077500 Hyco River near Denniston. Va.
289
1974-93
147
02077670 Mayo Creek near Bethel Hill. N.C.
53.5
1984-94
181
02080500 Roanoke River at Roanoke Rapids,
8,384
1964-93
N.C.
194
02091000 Roanoke River near Scotland
8,671
PR
Neck, N.C.
212 0208111310 Cashie River near Windsor. N.C.
108
PR
0 27
0.7
3.0
9.2
3.8
7.0
R
G
0 64
0.9
2.4
12.8
6.1
10.0
R
LP
0 45
0.9
10.4
24.9
18.0
21.0
R
LP
0 6
0.7
1.0
2.9
2.0
2.5
R
G
0 177
1.0
1,100
2.400
1.100
1.800
R
LP
0 12
0.8
1.120
1500
1.120
1.880
R
C
211 211 1.0 0 1.5 0.2 0.2 U G
'Site now inundated by impoundment. Low -flow characteristics represent regulated Row from Hyco Lake.
16 Low -flow Characteristics and Profiles for Selected Streams in the Roanoke River Basin, North Carolina

AQUA
North Carolina
February 20, 2007
Ms. Sergei Chemikov
Western NPDES Program
NC Division of Water Quality
NPDES Unit
1617 Mail Service Center
Raleigh, N.0 27699-1633
Michael J. Myers Regional Manager, Eastern Operations
Aqua North Carolina T: 919.467.8712
202 MacKenan Ct. F: 919.460.1788
Cary, North Carolina 27511 email: [e-mail]
Re: Greystone Subdivision Wastewater Treatment Plant
NPDES Permit No. NC0078115
Forsyth County
Dear Mr. Chemikov,
FEB 2 6 2007
DfNR _ WAr
?"11Itr SOUR FRPwCN
In accordance with your correspondence of October 27, 2006 and later conversations with our
engineers, ARCADIS, we submit three copies of the modified Engineering Alternatives Analysis
and Permit Application (bound together). The modified documents incorporate two significant
changes. The first is the evaluation of a Direct Discharge alternative on the basis of tertiary
treatment limits (BOD5 — 5 mg/L and NH3-N =1 mg/L). The second change reflects Winston-
Salem / Forsyth County Utilities Commission's lack of capacity and consequently the elimination
of the Connection to Existing Collection System alternative. A letter from the Commission is
included in Appendix D of the documents. Specific changes to the documents are enumerated on
the attached listing.
We respectfully request a timely review of our request for a Major Modification to the existing permit. It
is our desire to proceed with final plans, Authority to Construct submittals, and to construction as
quickly as possible. Should you have any questions, please feel free to contact either Jerry Hatton of
ARCADIS or me.
Sincerely,
Michael Myers
Regional Manager, Eastern Operations
Aqua North Carolina, Inc.
cc: Jerry Hatton
enc: EAA & Permit Application (3 copies)
Listing of EAA Changes

0 ARCAD 1 S ARCADIS G&M of North Carolina,
Infrastructure, environment, facilities Inc_
13777 Ballantyne Corporate Place
Suite 250
Charlotte
North Carolina 28277
Changes to Greystone WWTP Relocation and Expansion EEA Tel [phone]
Fax [phone]
1. Clover Sheet - Date. w .arcadis-us.co n
2. Signatory Sheet — M.J. Myers title.
MUNICIPAL SERVICES
3. NPDES Application — Form D Page 3 - M.J. Myers title.
4. Table of Contents —Appendix D title.
5. EAA Page 2 — M.J. Myers title.
Date:
6. EAA Page 6— Revised article 4.1. February 17, 2007
7.
EAA Page 9 — Revised article 4.4 to add tertiary filter to list of treatment
contact:
components and revised capital cost estimate.
Jerry Hatton
8.
EAA Page 10 — Revised Table 3 in article 4.5 to make connection to regional
Phone:
alternative not applicable and revised WWTP alternative capital cost and
704-544-5417
changed paragraph following table.
Email:
9.
EAA Page 10 — Revised Table 4 in article 5.1 to delete connection to
[e-mail]
regional alternative and revised WWTP present value.
10.
Figure 6 — Added tertiary filter to schematic.
our ref:
CN4AQ524.0000
11.
Appendix H — Revised WWTP design basis to add tertiary limits.
12. Appendix I — Revised WWTP cost to $12/gallon or $2,220,000.
Imagine the result
g:Vnnaqua ncicn4ag524.0000 - greystone wMp pern i0eas report & pennt appn2007 feb submttaheea changes - 02-17-07.doc

ARCADIS
GREYSTONE WWTP RELOCATION & EXPANSION
ENGINEERING ALTERNATIVES ANALYSIS
Prepared
//by:
Gerald E. Hatton, P.E.
Project Manager
ARCADIS G&M of North Carolina, Inc.
'i,
``%�% �NCARO���'
7
15031 -
Approved for Submittal:
' Michael J. My s�
Regional Manager, Eastern North Carolina Operations
AQUA North Carolina, Inc.
ARCADIS Project No. CN4AQ524.0000

ow
OR
OR
1. GENERAL INFORMATION
** 1.1 BACKGROUND
The existing Greystone Subdivision Wastewater Treatment Plant (Greystone WWTP)
is located north of the Town of Kemersville in Forsyth County, North Carolina. It is
situated on a 0.55 acre parcel at 1549 Creek Bed Road and serves a tributary area in the
immediate vicinity of the plant, including the residential Greystone Subdivision
community. The plant location is illustrated on Figure 1— Vicinity Map.
Greystone WWTP is owned and operated by AQUA North Carolina, Inc. (AQUA) and
is permitted under NPDES Discharge Permit NC0078115. Appendix A — NPDES
Discharge Permit NCO078115 contains a copy of this permit which is set to expire on
February 28, 2007. The plant discharges to an unnamed tributary of Belews Creek in
the Roanoke River Basin. The point of discharge is also illustrated on Figure 1.
Effluent limits are established in the permit for a 32,000 gallon per day (gpd) capacity
treatment plant.
AQUA desires to expand this facility to treat wastewater from an adjoining property
that is planned for development. Because of size limitations of the existing site, the
expansion is proposed as a totally new facility which will be located downstream
(northerly) of the existing plant on the adjoining property.
This Engineering Alternatives Analysis (EAA) is intended to meet the requirements of
the North Carolina Department of Environment and Natural Resources - Division of
�•, Water Quality (DWQ) and is submitted in support of an application for NPDES permit
authorization as either a modification to the existing permit NCO078115 or as a
replacement of this permit. The requested plant capacity is 185,000 gpd. This EAA
�+ evaluates alternatives on the basis of the full 185,000 gpd capacity (existing 32,000 gpd
plus proposed 153,000 gpd).
MM 1.2 PROPOSED PROJECT
The existing WWTP is a packaged treatment facility of steel construction. It was
construction in 2003 and replaced a problematic plant at the same site. Expansion of
this facility is not possible due to the small size of the property. Also, the proposed
development adjacent to Greystone is down gradient from the current discharge point
and pumping would be required. Because of these reasons, a new facility is proposed.
The proposed WWTP discharge point is shown on Figure 1 and more specifically
illustrated on Figure 2 — Existing WWTP and Expansion WWTP Locations. The
regional topography of the proposed WWTP site and surrounding property Yis
illustrated on Figure 3 — Proposed WWTP Site Topographic Map.
GREYSTONE WWTP
RELOCATION &
EXPANSION
ENGINEERING
ALTERNATIVES
ANALYSIS
P"

GREYSTONE WWTP
RELOCATION &
EXPANSION
ENGINEERING
ALTERNATIVES
ANALYSIS
The existing treatment system is an extended aeration process with flow equalization,
aeration tanks, clarifiers, aerobic sludge digestion, tablet chlorination, post aeration,
effluent metering, and a gravity discharge. The proposed WWTP will also be an
extended aeration process as described above, but will use ultraviolet disinfection
instead of the tablet disinfection.
1.3 APPLICANT NAME & CONTACT INFORMATION
a•►
Mr. Michael J. Myers
Regional Manager, Eastern North Carolina Operations
AQUA North Carolina, Inc.
P.O. Box 4889
Cary, NC 27519
919.467.8712, ext. 706
1.4 EXISTING FACILITY NAME & CONTACT INFORMATION
Greystone Subdivision Wastewater Treatment Plant
1549 Creek Bed Road
Forsyth, North Carolina
Mr. Tim Wadell
Operator in Responsible Charge
AQUA North Carolina, Inc.
P.O. Box 4889
Cary, NC 27519
919.467.8714
1.5 EAA PREPARER NAME & CONTACT INFORMATION
Mr. Gerald E. Hatton, PE
ARCADIS G & M of North Carolina, Inc.
13777 Ballantyne Corporate Place, Suite 250
,., Charlotte, NC 28277
704.752.4258, ext. 17
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GREYSTONE WWTP
RELOCATION &
EXPANSION
ENGINEERING
ALTERNATIVES
ANALYSIS
2. DISCHARGE CONDITIONS
ON 2.1 EXISTING DISCHARGE PERMIT LIMITS
r.
Permit NCO078115 includes limits for the existing 32,000 gpd plant capacity. The
permit is included in Appendix A and the limits are as follows:
Table 1 - Current Permit Limits
Characteristics
Flow
Monthly
AverageEffluent
32,000 gpd
Daily Maximum
BOD, 5-Day
23.0 m
34.5 m
Total Suspended Residue
30.0 mg/1
45.0 m
NH3 asN (Apr I — Oct 3 1
2.0m
NH3 as N (Nov 1 — Mar 31)
4.0 mg/1
Dissolved Oxygen
> 5.0 m
Fecal Coliform
200 / 100 ml
400 / 100 ml
Total Phosphorus
No Limit — Quarterly Monitoring
Ph
6.0-9.0
6.0-9.0
2.2 ZERO FLOW STREAM RESTRICTIONS
These restrictions are not applicable because the discharge is to a water body with
regular stream flows. As part of the investigation of expansion feasibility, the United
States Geological Survey (USGS) Water Resources Division in Raleigh was contacted.
Mr. Curtis Weaver of the USGS provided data regarding the 7Q 10 for the unnamed
tributary. His response is contained in Appendix B — Stream Flow Determination by
USGS. The 7Q10 yield at the proposed discharge point at Vance Road (SR 2014)
ranges between 0.13 and 0.15 cubic feet per square mile (cfsm). With a tributary area
of 2.65 square miles, the 7Q10 is 219,732 gpd for the lesser yield rate. The 30Q2 yield
is 513,786 gpd. The tributary area is illustrated on the plan contained in Appendix B.
2.3 RECEIVING STREAM CLASSIFICATION RESTRICTIONS
At the existing and proposed points of discharge, the creek is classified class C waters
., in the Roanoke River Basin. Class C waters have a defined best usage for aquatic life
propagation /protection and secondary recreation. Under this classification, discharges
are normally permitted.

nw
GREYSTONE WWTP
RELOCATION &
EXPANSION
ENGINEERING
ALTERNATIVES
** ANALYSIS
2.4 BASINWIDE WATER QUALITY PLANS
The most recent Roanoke River water quality plan was issued in July 2001 after
undergoing public input and review. As noted in this water quality plan, Sub -basin 03-
02-01 does contain Impaired Waters on the 303(d) list including Belews Lake and
Town Fork Creek. Neither of these Impaired Waters appears to be affected by waters
from the unnamed tributary of Belews Creek that serves as the proposed WWTP
discharge carrier. The Greystone Subdivision WWTP is cited in the plan as having
occasional, short-term violations of ammonia limits and the plan recommends major
improvements be made to the facilities. As previously noted in this EAA, the old
Greystone WWTP cited in the July 2001 edition of the water quality plan was replaced
in 2003. The current plant operates efficiently within the permit limits.
There are no conditions mentioned in the water quality plan that are expected to restrict
the discharge of the proposed Greystone WWTP beyond the limits currently permitted
for the existing plant.
2.5 IMPAIRED WATERS AND TMDLS
The unnamed tributary of Belews Creek is not listed as Impaired and TDML's have
not been established.
on 2.6 PRESENCE OF ENDANGERED SPECIES
No specific references have been found to indicate the present of endangered species
located in the vicinity of the current Greystone WWTP discharge point. A search of
records at the North Carolina Natural Heritage Program offices in Raleigh was
conducted and no endangered or protected plants or animal species have been
discovered or documented in the vicinity of the proposed discharge point.
2.7 LOCAL GOVERNMENT REVIEW
MR
The existing plant and surrounding region are located in unincorporated Forsyth
County. The proposed plant location is consistent with the current zoning and
M' subdivision ordinance of the County. Appendix C — Local Government Review Form
has been submitted through the Winston-Salem / Forsyth County Inspection
Department for completion by the County Manager.
MR
ow
P" 4

3. FUTURE WASTEWATER FLOWS
M 3.1 EXISTING SERVICE AREA INFORMATION
The service areas for the existing and proposed W WTP's are shown on Figure 1—
Existing WWTP and Expansion WWTP Locations. Included in the ultimate service area
is the existing Greystone Subdivision and the proposed 67 acre Lambe development.
3.2 CURRENT FLOWS
The average wastewater flow for the twelve month period ending September 2005 is
approximately 13,000 gpd. The Greystone Subdivision area consists of 135 single
family lots, but only 72 of these properties are currently connected to the sewer
_ collection system. It is assumed that all lots will be connected at some time in the
future as septic systems begin to fail. The houses contained in this development are
generally 4 bedroom houses. The allocated flow based on a DWQ standard flow
generation factors including 120 gallons per day per bedroom, is 64,800 gpd.
M
M
3.3 FUTURE FLOWS
The 67 acre property that is immediately adjacent to the Greystone Subdivision is
projected to contain 250 single family lots when fully developed. As is the case with
the existing service area, these lots are expected to have 4 bedroom houses. Using the
same estimation criteria as above, the projected wastewater flows to an expanded
Greystone WWTP are as follows:
Table 2 — Projected Wastewater Flows
SubdivisionD• ...
Existing Flow from Greystone Subdivision 64,800
67 Acre Property Subdivision 120,000
Total Permitted Flow and Future Flow 184,800
GREYSTONE WWTP
RELOCATION &
EXPANSION
ENGINEERING
ALTERNATIVES
ANALYSIS

A
,.., GREYSTONE WWTP
RELOCATION &
EXPANSION
ENGINEERING
ALTERNATIVES
ANALYSIS
4. ALTERNATIVE ANALYSIS
OR
There are several alternative methods of disposal available including (1) the connection
to an existing wastewater system, (2) land application of effluent, (3) reuse of effluent,
(4) the continued discharge to the unnamed tributary of Belews Creek, and (5)
combinations of these alternatives.
4.1 CONNECTION TO EXISTING WASTEWATER COLLECTION SYSTEM AND WWTP
The Winston-Salem / Forsyth County Utilities Commission operates a wastewater
collection system with two treatment facilities discharging to the Yadkin River. They
have collection system facilities serving Kernersville and surrounding region. The
nearest gravity sewer with sufficient capacity to handle the required 185,000 gpd flow
is approximately 3.4 miles south of the proposed discharge point. The Commission
system contains gravity sewers and pump stations with force mains. The collected
wastewater in the system generally flows to the west towards Winston-Salem. A recent
study of the existing collection system indicated that adequate capacity for additional
flows may not exist downstream.
The Greystone WWTP service area is separated from the existing Utilities Commission
sewers by the ridge line between Belews Creek and the unnamed tributary of Belews
Creek. It will be necessary to pump wastewater to the Commission sewers. Also,
downstream capacity improvements are expected to be required in order to
accommodate the addition of 185,000 gpd from Greystone. When adjusted to peak
flow using 2.5 as a peaking factor, the flow capacity required for Greystone is 321
+� gallons per minute. This peak flow rate is used to evaluate both gravity and pumping
facilities in the Winston-Salem / Forsyth County Utilities system. The facilities
necessary to connect to the Utilities Commission's gravity sewer are shown on Figure
4 — Connection to Existing Wastewater Collection System and WWTP.
According to Mr. Nicholas J. Seeba, Special Projects Coordinator of Winston-Salem /
Forsyth County City/County Utilities, their system can not accommodate the projected
flow. Accordingly, no further analysis was made.
Mr. Seeba's letter is included in Appendix D — Connection to Existing Collection
System and WWTP — Public Sewer Availability.
P" 4.2 LAND APPLICATION
Applying treated wastewater to land at rates compatible with the natural physical,
chemical and biological processes that occur in soils is an alternative. Due to odor
problems and buffer requirements, land applying screened wastewater is generally
,.., 6

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performed in very rural areas with access to abundant well -drained and cleared land.
The Greystone WWTP is located in an area that is experiencing moderate
development growth. It is being developed for residential land uses with supporting
commercial properties. The region is characterized as rolling topography with many
streams and creeks. Large areas lie within regulated flood plains.
Ism
There are few large parcels of property near the Greystone plant site. For the
purposes of this alternative analysis, several parcels ranging in size between 285 and
P" 88 acres were identified from the Forsyth County GIS database. These properties are
illustrated on Figure 5 — Potential Land Application Sites and tabulated in Appendix
E - Potential Land Application Sites. The table contains ownership information, area,
tax value, current zoning classification, and approximate area of the property
impacted by flood plains. A tax value per acre of useable property (total area less
wetlands/flood plain) has been estimated.
Most of these parcels are either used for agricultural purposes or are in the
development planning stage. It is not likely that the property owners would willingly
sell their property for land application purposes. The analysis of this alternative has
only been undertaken to determine financial cost of the alternative, not actual
feasibility.
Many other factors can influence the potential of this alternative including the
presence of wetlands, environmental factors, zoning issues, and property owner
willingness to sell their property. AQUA does not own any land in the area other than
the current WWTP site and several community well sites. Four parcels within a mile
n� and one half of the proposed WWTP site were identified as large enough to be used
for land application. One was chosen as representative of the others and used for cost
estimating purposes. It is owned by T.G. Preston Jr.
Buffer zones for a spray irrigation system are required by DWQ requirements. These
are per NC Administrative Code (NCAC) T15A: 02H.0200 and are set at 400 feet
from any habitable residence, 150 feet from any property line, and 100 feet from a
stream, canal or marsh. Assuming a soil loading rate of 36 inches per year, the
needed land area would be 74 acres. A 60-day storage reservoir would require
approximately 5 acres to contain a 11.1 million gallon lined pond with a water depth
of seven feet. After adding space for an effluent storage reservoir and the required
buffers, a total of 111 acres of land will be required depending on the shape of the
property available.
p,
An estimate of the capital cost of the land application system was made without the
benefit of a soil scientist, design, or field information. The estimated capital cost
including property acquisition is $6,246,850 and is detailed in the Appendix F— Land
GREYSTONE WWTP
RELOCATION &
EXPANSION
ENGINEERING
ALTERNATIVES
ANALYSIS

P"
GREYSTONE WWTP
RELOCATION &
EXPANSION
ENGINEERING
ALTERNATIVES
ANALYSIS
Application - Present Value Calculations. This alternative requires a WWTP with
performance capabilities similar to that permitted under the current NPDES permit.
As a result of the present worth analysis and the additional considerations listed above,
land application is not considered a viable alternative.
4.3 IMPLEMENTATION OF A REUSE PROGRAM
With modifications, a wastewater treatment facility meeting the requirements of an
expanded Greystone WWTP can treat wastewater to the required effluent standards
that would allow its use as reuse water. Reuse quality effluent would require the
addition of 5-day storage pond with return pump station, and 30-60 day storage pond
for inclement weather conditions. Since the existing W1NTP site is limited,
acquisition of property for the location of both reservoirs would be necessary.
Approximately 4.9 acres would be necessary for these reservoirs.
Ultimate disposal of the effluent from the WWTP is usually anticipated to be by land
application on a golf course. The level of treatment required for spray irrigation on
golf courses is tertiary treatment plus a very low coliform count. Consistent with the
p.,
requirements of NCAC T15A:02H.219k, the WWTP is required to produce an
effluent with characteristics as follows:
■ BOD5 (monthly average) <10 mg/l
■ BOD5 (daily maximum) <15 mg/1
■ TSS (monthly average) <5 mg/1
^+
■ TSS (daily maximum) <10 mg/1
■ Fecal Coliform (monthly average) <14/100 ml
■ Fecal Coliform (daily maximum) <25/100 ml
■ Turbidity (maximum) <10 NTU
Regulations require ammonia -nitrogen less than 4 mg/1 (monthly average) and 6 mg/1
(daily maximum). However, to avoid nutrient induced algal growth in irrigation
ponds and to prevent groundwater contamination, it is desirable to minimize the
release of nitrogen and phosphorus. Accordingly, it is desirable to limit the effluent
nitrate concentration to 15 mg/1 and phosphorus concentration to 5 mg/l.
The second part of a reuse program is finding users. Potential consumers of reuse
water are landscape irrigation sites and industrial sites. Reclaimed water contains
nutrients such as nitrogen and phosphorus, which can be detrimental to surface
waters yet beneficial to terrestrial vegetation. Treated effluent can also be used by
some industrial users for their non -potable water needs. There are no water -using
industries in the region.
8

OR
GREYSTONE WWTP
RELOCATION &
EXPANSION
ENGINEERING
ALTERNATIVES
�+ ANALYSIS
Golf courses generally have the best reuse potential among landscape irrigation users
due to their high application rates, large irrigated areas, and single supply point. Peak
reuse flows occur at night when most landscape irrigation is performed. Future golf
courses have an advantage in that the water storage facility, usually an isolated pond,
can be added to the course design to allow for off-peak pumping. There are no
existing golf courses in the vicinity of the Greystone WWTP.
For the capital costs estimates, the same parcel identified under the land application
alternative was considered. The force main routing is the same for both alternatives.
The estimate of the capital costs for the reuse system is $6,460,790 as detailed in
Appendix G — Reuse - Present Value Calculations. This estimate was made without
the benefit of a soil scientist, design. or field information. This alternative requires a
WWTP with performance capabilities exceeding that permitted under the current
NPDES permit.
Because a suitable reuse customer is not available, this alternative is not considered a
viable alternative.
,M14 4.4 DIRECT DISCHARGE TO SURFACE WATERS
This alternative involves the total replacement of the existing 32,000 gpd wastewater
,., treatment plant with a 185,000 gpd plant, designed to meet the requirements of the
current discharge permit limits. The proposed plant will include the following
components:
■ Dual Train Reliability
■ Flow Equalization Basins with Aeration.
■ Extended Aeration Basins.
■ Gravity Clarifiers.
■ Tertiary Filter.
■ Ultraviolet Disinfection with Post Aeration.
■ Sludge Digestion and Storage with Aeration.
■ Emergency Power Generator.
The proposed improvements are illustrated in Figure 6 — Proposed WWTP Schematic.
The basis of design for the 185,000 gpd plant is contained in Appendix H— Design
Basis for Proposed WWTP Improvements.
The estimate of the capital costs for the WWTP is $3,310.450 as detailed in Appendix
^, I — Direct Discharge - Present Value Calculations.
P" 9

4.5 COMBINATION OF OPTIONS
Any combination of the alternatives listed above is not feasible. The capital costs of the
land application and reuse alternatives are much higher than continuing discharging to
the unnamed tributary of Belews Creek as shown below.
Table 3 — Summary of Alternative Costs
Alternative
Connection to Existing Collection System
I Capital Cost & Fees
Not Applicable
Land Application System
$6,246,850
Reuse System
$6,460,790
WWTP with Direct Discharge
$3,310,450
Since the capital costs land application and reuse are significantly higher for the
alternatives other than a surface water discharge, combinations of alternatives will
likewise be more expensive. Construction of the direct discharge WWTP allows
AQUA to meet the demands of project flow growth. Capacity in Winston-Salem /
Forsyth County Utilities Commission facilities is insufficient to carry AQUA's
projected flow.
ECONOMIC FEASIBILITY OF ALTERNATIVES
5.1 PRESENT VALUE CALCULATION ASSUMPTIONS
The determination of present values for the alternatives include capital costs, land
acquisition, impact fees, and operation & maintenance costs. Fixed costs include all of
the above except the O&M costs which are accumulated and adjusted to reflect the
total expenses in reference to present dollars. The analysis period is 20 years with an
inflation factor of 5.875% as established by the US Environmental Protection Agency
and as published annually by the Construction Grants & Loans section of the DWQ.
The present value calculations are contained in Appendices F, G, and I. They are
summarized in the following table.
Table 4 — Summary of Alternative Present Values
Alternative Capital Cost & Fees
Land Application System $7,871,379
Reuse System $8,085,319
WWTP with Direct Discharge $4,381,110
GREYSTONE WWTP
RELOCATION &
EXPANSION
ENGINEERING
ALTERNATIVES
ANALYSIS
10

ON
GREYSTONE WWTP
RELOCATION &
EXPANSION
ENGINEERING
ALTERNATIVES
�+ ANALYSIS
5.2 CONCLUSIONS AND RECOMMENDATIONS
Based on the capital and present value analysis, the direct discharge to surface water
alternative is the recommended plan.
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QUADRANGIX:
BELEWS CREEK, NC
Figure 1
Vicinity Map
Greystone WWTP Expansion
Engineering Alternatives Analysis
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Figure 2
Existing WWTP and
Expansion WWTP Locations
GREYSTONE WWTP EXPANSION
ENGINEERING ALTERNATIVES ANALYSIS
9�, ARCADIS
of North Carolina, Inc
13777 Ballantyne Corporate Place
Suite 250
Charlotte, North Carolina 28277
Tel: [phone] Fax: [phone]
March 2006

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-
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9 ` .�.. ; ❑
CAR7WRIGHTDR Si-� 1 4 •�_ I ✓ - j .�--/'"--': _
I� 0.032 MGD
r� Q .
,d Greystone WWTP Site CD
N
Proposed
•,� e78 0.185 MGD PINE SHADOS CT SR44'43 9q'
µ -
r li
q'B Greystone WWTP Site ,
f
PONDAROSAOR SR2,11 � tiB2?, ( • Q � d ����W j-' Q ''[]10 � �.. QY�' .
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AQUA
North Carolina.
VICINITY MAP
i
p.
Ic mid (1i
[ e
0 300 600 900 1,20
eet
Legend
10-Contours Service Areas
-- --- 2-Contours OCCCCOC Current
Creeks/Streams New
Lakes/Ponds
0 Buildings
® Exlsltng WWTP
Site wwTP
0 1 Mile Radius
0 Parcel Outline
Figure 3
Proposed WWTP Site
Topographic Map
GREYSTONE WWTP EXPANSION
ENGINEERING ALTERNATIVES ANALYSIS
= ARCADI S
of North Carolina, Inc.
13777 Ballantyne Corporate Place
Suite 250
Charlotte, North Carolina 28277
Tel: [phone] Fax: [phone]
March 2006

III
m11111WO
'.�Idww
Al

I I
C]
O
KATHERINE VOSS & TRUSTEE
285.09 ac.
Zoned AG
&
I �•
J J & JACQUELINE CUTRI r ry
80.24 ac. �0
Zoned RS40 4 r
i
_ c kf_]ff
nh-
.I
/ z
�r ` N
IU
4 �
T uj
b
HARLM DR r1 J
Land Application Site
T G PRESTON JR 74 ac.
139.82 ac.
Zoned AG
11.1 MG Reservoir
with Pump Station
S&D HOLDINGS LLC &
88.65 ac. `
Zoned RS30
IPTONDR SR21 4
P11
Cn o �_ Proposed F/-` i
o a � Force Main `..1 �• , r"�~
Z
3.
.
o Q
Y
i W
u Proposed
Pump Station C MET �N
LAMBE R
67.29 ac.
Zoned RS40
1.1
`ENBRpOK Ro sR.
O� r
ap,
9
O�
AQUA
North CarolinaTM
VICINITY MAP
N
0 600 1,200 2,400 3,600
�- Feet
Legend
Creeks/Streams
Force Main
Potential Land Application Sites
1 mile radius
Site WWTP
Lakes/Ponds
C Flood Plain Limits
Service Area
or-ec Current
@Mw New
Figure 5
Potential Land Application Sites
GREYSTONE WWTP EXPANSION
ENGINEERING ALTERNATIVES ANALYSIS
ARCADIS
of North Carolina, Inc.
13777 Ballantyne Corporate Place
Suite 250
Charlotte, North Carolina 28277
Tel: [phone] Fax: [phone]
March 2006

GRAVITY DISCHARGE CLEMWELL IN DISINFECTION
3 POST AERATION
—TERTIARY FILTER
W
S C C S
C C CLARIFIERS (TYP)
SLUDGE WESTER (TYP)
AERATION BASIN (TYP)
A A
EQ EQ BASIN
INFLUENT FROM
PUMP STATION
ARCADIS G&M
of North Carolina
13777 Ba l lantyne Cor porab Place
So de 250
ChadQC, North Carofna 28277
Tel [phone] Fax [phone]
AQUA Figure 6
North Carolina,. Proposed WWTPSchematic
GREYSTONE WWTP EXPANSION
ENGINEERING ALTERNATIVES ANALYSIS

Hatton, Jer
an
From:
John C Weaver Ucweaver@usgs_govj
tent:
Wednesday, July 13, 2005 3:53 PM
,'o:
Hatton, Jerry
Cc:
John C Weaver
Subject:
Re: Request for Stream Flow Determination
Follow Up Flag:
Follow up
Flag Status:
Red
ON
Jerry,
In response to your inquiry about the low -flow characteristics for a couple of streams in
04 Forsyth County, the following information is provided:
(1) Unnamed tributary to Yadkin River -- No previous low -flow characteristics have been
determined for the specific locations that you identified, and no site -specific data is
°" available for any of these locations. The only previous determination in this basin is
for a location in the headwaters estimated in 1988 (Sta. 0211545815, drainage 0.13 sgmi).
In the absence of site -specific data, low -flow characteristics are estimated by assessing
0" a range in low -flow yields (expressed as flow per square mile drainage area in cubic feet
per second per square mile, or cfsm). For the 1988 estimate, the 7Q10 and 30Q2 low -flow
yields used was 0.10 and 0.33 cfsm, respectively. These yields were based on a nearby
USGS partial -record site (Sta. 02115671, drainage 3.93 sgmi) near Lewisville.
04
Low -flow characteristics for the above partial -record site and other nearby sites were
published in USGS Water -Supply Paper 2403 "Low -flow characteristics of streams in North
Carolina" (Giese and Mason, 1993).
P" kssessment of the low -flow yields at these nearby locations suggest a 7Q10 yield ranging
.rom 0.08 to 0.16 cfsm and a 30Q2 yield ranging from 0.31 to
0.39 cfsm.
In the absence of any other information or analyses, a 7Q10 yield of 0.10 cfsm and 30Q2
yield of 0.35 cfsm can be considered appropriate for this stream. Once you know the
drainage areas for your points of interest, you can apply these yields to estimate the
7Q10 and 30Q2 flows. Our drainage -area maps here at the USGS office show the drainage at
the mouth of this tributary to be 1.28 sgmi (Sta. 0211545825, Yadkin River tributary near
Grapewood). We do not have any drainage -area information for the other two points of
interest on this stream.
a�
(2) Belews Creek tributary at SR 2014 -- Previous estimates for this site were made in
response to a 1982 request; however, the estimates are based on relations that are no
longer used to assess low -flow characteristics. A check of the low -flow characteristics
for some nearby USGS partial -record sites suggests that the 7Q10 yield ranges from 0.13 to
0.15 cfsm, and the
30Q2 yield ranges from 0.3 to 0.33 cfsm. A check of the geologic map also indicates there
is a transition in the underlying geologic setting that could result in some of the low -
flow yields being at smaller levels.
However, records for sites in this area are limited and in the absence of any other data
or information, the above yield ranges can be used.
+� The drainage -area for the location at SR 2014 is 2.65 sgmi (station id 020690235, Belews
Creek tributary at SR 2014 near Kernersville).
Hope this information is helpful.
a•4
Thank you.
urtis Weaver
J. Curtis Weaver, Hydrologist, PE
P" 1

�.s
M"
OR
04
MR
MR
I"
USGS North Carolina Water Science Center
3916 Sunset Ridge Road
Raleigh, NC 27607
Telephone: [phone] // Fax: [phone] E-mail address -- [e-mail]
Internet address -- http://nc.water.usgs.gov/
"Hatton, Jerry"
<GHatton@arcadis-
us.com>
Determination
07/08/2005 04:41
PM
Curtis,
To: <[e-mail]>
CC:
Subject: Request for Stream Flow
It was a pleasure talking with you the other day.
As I mentioned, I have two projects that I need stream flow determinations, both in
Forsyth County, NC. Enclosed are vicinity maps along with USGS maps indicating the points
of potential. discharge. I am requesting multiple points for each proposed WWTP so that I
can determine the appropriate location for a discharge. I suspect that it will be
am necessary to move downstream beyond the junction of waterways to reach the volume
.ecessary.
-The projects are titled "Graystone WWTP Expansion" and "Lissara WWTP".
«Lissara Discharge Points - 07-08-05.pdf >> «Graystone Discharge Points - 07-08-05.pdf >>
Please provide the 7Q10 and 30Q2 rates that I should apply to the tributary areas to the
discharge point so that I can calculate the volumes necessary.
F" Thank you for your assistance.
Jerry Hatton
ARCADIS G&M of North Carolina Inc.
13777 Ballantyne Corporate Place, Suite 250 Charlotte, North Carolina 28277 Tel
704-752-4258 - Ext 17 Fax [phone] [e-mail]
[attachment "Lissara Discharge Points - 07-08-05.pdf" deleted by John C
Weaver/WRD/USGS/DOI] [attachment "Graystone Discharge Points - 07-08-05.pdf" deleted by
John C Weaver/WRD/USGS/DOI]
P"
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•- Attachment A. Local Government Review Form
General Statute Overview: North Carolina General Statute 143-215.1 (c)(G) allows input from local governments in the issuance
P" of NPDES Permits for non -municipal domestic wastewater treatment facilities. Specifically, the Environmental Management
Commission (EMC) may not act on an application for a new non -municipal domestic wastewater discharge facility until it has
received a written statement from each city and county government having jurisdiction over any part of the lands on which the
proposed facility and its appurtenances are to be located. The written statement shall document whether the city or county has a
zoning or subdivision ordinance in effect and (if such an ordinance is in effect) whether the proposed facility is consistent with the
ordinance. The EMC shall not approve a permit application for any facility which a city or county has determined to be
inconsistent with zoning or subdivision ordinances unless the approval of such application is determined to have statewide
significance and is in the best interest of the State.
Instructions to the Applicant: Prior to submitting an application for a NPDES Permit for a proposed facility, the applicant
shall request that both the nearby city and county government complete this form. The applicant must:
■ Submit a copy of the permit application (with a written request for this form to be completed) to the clerk of the city and
the county by certified mail, return receipt requested.
■ If either (or both) local governments) fail(s) to mail the completed form, as evidenced by the postmark on the certified
mail card(s), within 15 days after receiving and signing for the certified mail, the applicant may submit the application to
fm the NPDES Unit.
■ As evidence to the Commission that the local government(s) failed to respond within 15 days, the applicant shall submit a
copy of the certified mail card along with a notarized letter stating that the local government(s) failed to respond within the
15-day period.
am
n
Instructions to the Local Government: The nearby city and/or county government which may have or has jurisdiction over
any part of the land on which the proposed facility or its appurtenances are to be located is required to complete and return this
form to the applicant within 15 days of receipt. The form must be signed and notarized.
Name of local government FM f S V Ti -
(City/County)
Does the city/co ty have jurisdiction over any part of the land on which the proposed facility and its appurtenances are to be
located? Yes [Tm [ ] If no, please sign this form, have it notarized, and return it to the applicant.
Does the city/county have in effect a zoning or subdivision ordinance? Yes [vi No [ ]
If ere is zoning or subdivision in ordnance ffect,,Qpl for ��rop seed facility consistent with the ordinance? Yes
No �]
I✓j vd t� .
6u))1)
mam
State of Ar);c 62fa/ PLO- , County of Ors On this Z/9 day of %yiQ.r'C �- Q2D0Lo, personally appeared before me, the said
name S_r__kJ=LM_ PiErtlier to me known and known to me to be the person described in
and who executed the foregoing document and he (or she) acknowledged that he (or she) executed the same and being duly sworn
by me, made oath that the statements in the foregoing document are true.
My Commission expires Jejbier 4!� J409 (Signature of Notary Public)
otary Public (Official Seal)
MR
QFMAL SEAL
KIM M. HEPLER
a� 119y =ff N OctcM
FYM
C1wr 24,2U
EAA Guidance Document Version: June 23, 2005
�+ Page 8 of 8

Winston-Salem •Forsyth County
/County Utilities
ester •Sewer •Solid Waste Disposal
UtilitiesAdministration • P.O. Box 2511 • Winston-Salem, NC 27102 • Tel [phone] • Fax [phone]
February 14, 2007
an
ARCADIS G&M of North Carolina Inc.
.. Jerry Hatton
13777 Ballantyne Corporate Place, Suite 250
Charlotte, North Carolina 28277
In Re: Public Sewer Availability
For Greystone Subdivision Wastewater Treatment Plant Expansion
Kerner Road and Vance Road
Dear Mr. Hatton:
This letter is to inform you that Winston-Salem/Forsyth County sanitary sewer services
are not available to serve the property described as Greystone Subdivision Wastewater
.. Treatment Plant Expansion.
Sanitary Sewer: An 18" gravity sewer main is located in the proposed connection area
however it is not able to handle the 321 gpm peak flow rate produced by this expansion
of the Greystone W WTP.
If you have any further questions, please give me a call at [phone].
Sincerely,
U A 4�ITIES ADMINISTRATION
VI
Nicholas J. Seeba
Special Projects Coordinator
City/County Utilities Division
a.
W
r;
I1E3 1 , 20101

GREYSTONE WWTP EXPANSION & RELOCATION AQUA North Carolina, Inc.
ENGINEERING ALTERNATIVES ANALYSIS February 2007
Appendix E - Potential Land Application Sites
Land Ownership and Usable Area
Tax Records Data
Zoning
Zoning
Percent
Net Useable
Tax Value
Property Index
Land Area
Tax Value
Current
Classificatio
Wetlands or
Area in
per Useable
Ownership of Record
Number
in Acres
Tax Value
per Acre
Land Usa e
n
Flood Plain
Acres
Acre
Comments
Katherine Voss, Trustee
6878-68-0893
285.09
$816,880
$2,865
Vacant
AG
5%
270.84
$3,016
Development Status Unknown
T R Preston, Jr
6888-18-4997
139.82
$633,249
$4,529
Vacant
AG
10%
125.84
$5,032
Development Status Unknown
S&D Holdings LLC
6888-58-3957.65
88.65
$1,474,866
$16,637
Vacant
RS30
50%
44.33
$33,274
Development Status Unknown
Curti J J & Curti Jacqueline
6878-53-5409
80.24
$282,072
$3,515
Vacant
RS40
20%
64.19
$4,394
Development Status Unknown
Average
593.80
$3,207,067
$5,401
505.19
$6,348
Notes:
1. Tax value may not adequately reflect the true value of the property and does not include the lost opportunity value associated with the highest and best use of the property.
2. The tax value of the Voss, Preston & Curti properties more accurately reflect true value for developable property. For financial analysis, use $5,000 per acre.
ARCADIS G&M of North Carolina, Inc.
CN4AQ524.0000 Consulting Engineers Appendix E-1

PM
GREYSTONE WWTP EXPANSION & RELOCATION AQUA North Carolina, Inc.
ENGINEERING ALTERNATIVES ANALYSIS February 2007
P" Appendix F - Land Application
Preliminary Opinion of Cost and Present Value Calculations
Imo} This Alternative includes the following improvements:
1) 0.185 MGD wastewater treatment plant
2) 321 gpm pump station at proposed WWTP site
3) 6-Inch force main from WWTP to disposal site
,..I 4) 111 acre disposal area @ 74 acres for irrigation, 4.9 acres for storage basin, plus 50% for buffers
5) 11.1 million gallon reservoir for 60 days of storage
6) 775 gpm pump station at reservoir
7) Irrigation system
MR
F"
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PM
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M
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ITEM NO. I ITEM DESCRIPTION QUANTITY UNITs UNIT PRICE TOTAL
CAPITAL COSTS
1
0.185 MG Wastewater Treatment Plant
185,000
gpd
$ 10
$ 1,850,000
2
321 gpm Pump Station with Generator
1
Lump Sum
250,000
250,000
3
6-Inch Force Main - Graystone WWTP to Disposal Site
8,000
L.F.
40
320,000
4
11.1 Million Gallon Reservoir
1
Lump Sum
225,000
225,000
5
775 gpm Pump Station at Reservoir
1
Lump Sum
300,000
300,000
6
Irrigation System Distribution Header
5,000
L.F.
10
50,000
7
Irrigation System @ $0.25 per S.F.
74
Acres
10,890
805,860
8
Access Road
500
L.F.
10
5,000
9
Fencing
7,500
L.F.
10
75,000
10
Monitoring Wells
8
Each
13,000
104,000
11
Engineering @ 10%
1
Lump Sum
393,486
393,486
Sub -Total
Contingencies
Total
$ 4,378,346
1,313,504
1 $ 5,691,850
LAND ACQUISITION
Application Area, Reservoir Site, Buffers 111 Acres $ 5,000 $ 555,000
OPERATION AND MAINTENANCE COSTS (Present Value, 20 Yr Life, 5.875% Interest)
Graystone Pump Station Electric Costs
1
Year
$ 26,700
$ 26,700
Pump Station at Reservoir Electric Costs
1
Year
11,100
11,100
Pump Replacement and Pump Station Repairs
1
Year
10,000
10,000
Annual Aqua Sewer Use Fees @ $20.00/Month (Flat Rate)
385
Each
240
92,400
Sub -Total
$ 140,200
Present Worth Factor
11.59
PV for O&M and Sewer Use Fees
$ 1,624,529
TOTAL NET PRESENT VALUE (Present Value, 20 Yr Life, 5.875% Interest)
Capital Costs
$ 5,691,850
Application Site Property Acquisition
555,000
Operation and Maintenance Costs (Present Value)
1,624,529
Total Net Present Value
$ 79871,379
P"
ARCADIS G&M of North Carolina, Inc.
CN4AQ524.0000 Consulting Engineers Appendix F-1

00
GREYSTONE WWTP EXPANSION & RELOCATION
ENGINEERING ALTERNATIVES ANALYSIS
Appendix G - Reuse
Preliminary Opinion of Cost and Present Value Calculations
t� This Alternative includes the following improvements:
1) 0.185 MGD wastewater treatment plant with tertiary filters
2) 321 gpm pump station at proposed WWTP site
3) 6-Inch force main from WWTP to disposal site
ail 4) 80 acre disposal area @ 74 acres for irrigation, 4.9 acres for storage basin
5) 11.1 million gallon reservoir for 60 days of storage
6) 775 gpm pump station at reservoir
7) Irrigation system
I"
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0"
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OR
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AQUA North Carolina, Inc.
February 2007
ITEM NO. I ITEM DESCRIPTION QUANTITY UNITS UNIT PRICE TOTAL
CAPITAL COSTS
1
0.185 MG Wastewater Treatment Plant
185,000
gpd
$ 12
$ 2,220,000
2
321 gpm Pump Station with Generator
1
Lump Sum
250,000
250,000
3
6-Inch Force Main - Greystone WWTP to Disposal Site
8,000
L.F.
40
320,000
4
11.1 Million Gallon Reservoir
1
Lump Sum
225,000
225,000
5
775 gpm Pump Station at Reservoir
1
Lump Sum
300,000
300,000
6
Irrigation System Distribution Header
5,000
L.F.
10
50,000
7
Irrigation System @ $0.25 per S.F.
74
Acres
10,890
805,860
8
Access Road
500
L.F.
10
5,000
9
Fencing
1,500
L.F.
10
15,000
10
Monitoring Wells
4
Each
13,000
52,000
11
Engineering @ 10%
1
Lump Sum
419,286
419,286
Sub -Total
Contingencies
Total
$ 4,662,146
1,398,644
1 $ 6,060,790
LAND ACQUISITION
Application Area, Reservoir Site, Buffers 80 1 Acres 1 $ 5,000 $ 400,000
OPERATION AND MAINTENANCE COSTS (Present Value, 20 Yr Life, 5.875% Interest)
Graystone Pump Station Electric Costs
1
Year
$ 26,700
$ 26,700
Pump Station at Reservoir Electric Costs
1
Year
11,100
11,100
Pump Replacement and Pump Station Repairs
1
Year
10,000
10,000
Annual Aqua Sewer Use Fees @ $20.00/Month (Flat Rate)
385
Each
240
92,400
Sub -Total
$ 140,200
Present Worth Factor
11.59
PV for O&M and Sewer Use Fees
I $ 1,624,529
TOTAL NET PRESENT VALUE (Present Value, 20 Yr Life, 5.875% Interest)
Capital Costs
$ 6,060,790
Application Site Property Acquisition
400,000
Operation and Maintenance Costs (Present Value)
1,624,529
Total Net Present Value
$ 8,085,319
ARCADIS G&M of North Carolina, Inc.
CN4AQ524.0000 Consulting Engineers
Appendix G-1

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Pon
MR
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PR
WR
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Aqua Greystone WWTP
ARCADISBasis of Design
' ! Table of Contents
Infrastructure, environment, buildings GEH
February 2007
Wastewater Charcateristics
Design Criteria
Proposed WWTP Design
Paue No.
2
3-4
5-7
EAA Appendix H - Final Design Basis - 02-17-07.xis

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F"
Aqua Greystone WWTP
ARCADIS Basis of Design
' Wastewater Characteristics
Infrastructure, environment, buildings GEH
February 2007
Development Description
Service Area
Location
Type of Usage
Type of Waste
Status
Greystone & Lambe Subdivisions
Forsyth County, North Carolina
Single family residential
Domestic
Existing and Proposed Developments
Influent flow 0.185
MGD Design Daily Flow
2.5
Peak Factor
0.463
MGD Peak Daily Flow
1.5
Equalized Flow Peak Factor
0.278
Peak Equalized Flow
0.013
Current Average Daily Flow
0.030
Current Peak Daily Flow
Influent Characteristics
Domestic Wastewater
240
mg/L BOD
200
mg/L TSS
25
mg/L N H3-N
500
mg/L COD
40
mg/L TKN
Effluent Limits
BOD
TSS
N H3-N
Fecal Coliform
pH
D.O.
Receiving Steam
River Basin
Stream Classification
Existing NPDES No.
Permit Expiration
April to October 31
November 1 to
March
Monthly Daily
Average Maximum
Monthly Daily
Average Maximum
5.0 NA
5.0
NA
30.0 45.0
30.0
45.0
1.0 NA
1.0
NA
200 400
200
400
6to9
6to9
5.0
5.0
Unnamed Tributary of Belews Creek
Roanoke
C
NCO078115
28-Feb-07
mg/L
mg/L
mg/L
per 100 mL
mg/L (minimum)
EAA Appendix H - Final Design Basis - 02-17-07.xls

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� ARCADIS
Aqua Greystone WMP
Basis of Design Calculations
Design Criteria
Infrastructure, environment, buildings GEH
February 2007
NCDENR OSWW System Design Aids - Tertiary Treatment Systems
i
FLOW EQUALIZATION
i
EQ Basin Volume = 25% of the design daily flow (minimum liquid volume)
EQ Pump Capacity = 1.5 times average daily flow
AERATION BASINS
Hydraulic Retention Time = 30 hour detention time atdesign daily flow (minimum)
Quantity = 2 Aeration Basins
-IERS
Detention Time =
4 hours, at design daily flow (minimum)
Surface overflow rate =
300 gpd per sf at design average flow
Quantity =
2 Clarifiers
Weir loading =
10,000 gpd per linear foot at peak daily flow
IIFILTERS
Filter Rate =
1.0
gpm per sf at design daily flow
Quantity =
2
filters
Wash water rate =
15
gpm per sf
Wash water duration =
10
minute backwash duration
Back Wash Pump Capacity =
Wash water rate time filter area
Clearwell volume =
Back wash pump capaity times duration
Mudwell volume =
Clearwell volume plus one half peak flow for 10 minutes
Mudwell pump capacity =
1.5
times average daily flow
EAA Appendix H - Final Design Basis - 02-17-07.xis
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ARCADIS
Infrastructure, environment, buildings
POST AERATION
Detention time = 15 minutes at peak flow
Effluent DO = 5 mg/L
SLUDGE HOLDING
Volume = 10% of the design daily flow
AERATION SYSTEM
Aqua Greystone WWTP
Basis of Design Calculations
Design Criteria
GEH
February 2007
Flow Equalization =
20
cfm per 1,000 CF (dedicated blower with interconnect to plant air)
Aeration =
the greater
of:
3,150
cfm per pound BOD, or
or
30
cfm per 1,000 CF
Sludge Holding Tank =
30
cfm per 1,000 CF
Sludge air lift pump =
4
cfm per pump
Skimmer air lift pump =
2
cfm per pump
Post Aeration =
10
cfm per 1,000 CF
Filter air acour blower =
1
cfm per filter sf (dedicated blower with interconnect to plant air)
JUV DISINFECTION 28,000 NWs/sq.cm
EAA Appendix H - Final Design Basis - 02-17-07.xls
2 of 2

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Aqua Greystone WWTP
ARCADIS Basis of Design Calculations
' Proposed WWTP Design
Infrastructure, environment, buildings GEH
February 2007
V EQUALIZATION
Minimum liquid volume = 46,250 gallons 25% of 0.185 m9d -
Proposed Design = 14.00 feet wide, by
40.00 feet long, by
11.00 feet deep 11.00 1 hi water 0 pump stop
46,077 gallons
EQ Pumps = 193 gpm
RATION BASINS
Minimum liquid volume = 231,250 gallons
Proposed Design = 14.00 feet wide, by
92.00 feet long, by
12.00 feet deep
115,611 gallons each
2319222 gallons total
----____1.5 ---times-----_0_185 -- mid�
----30-----hrs times----7708
12.00 1 hi water 1 0 bottom slab
;IFIERS
Minimum liquid volume = 30,833
gallons
4 hrs times 7708 qph_... __�
Proposed Design = 14.00
feet wide, by
12.50
feet long, by
12.00
feet deep
12.00 jhi water
0
bottom slab
159708
gallons each
31,416
gallons total
Minimum Surface Area = 617
sq feet9pd
0:185
Proposed Design =
14.00
feet wide, by
22.50
feet long, by
315
sq feet each
630
sq feet total
Minimum Weir Length = 28
feet
__ 10,000 ___ fed! If _____0.278
__
m9d_____
Proposed Design = 28.00
feet
4"
EAA Appendix H - Final Design Basis - 02-17-07.xls
1 of 3

t�1
Aqua Greystone WWTP
ARCADIS Basis of Design Calculations
' Proposed WWTP Design
Infrastructure, environment, buildings GEH
February 2007
FILTERS
Minimum filter area =
128
sq feet
Proposed Design =
6.50
feet wide, by
4.50
feet long, by
29
sq feet each
146
sq feet total
Minimum Clearwell Volume =
41500
gallons
Proposed Design =
6.50
feet wide, by
9.00
feet long, by
10.45
feet deep
4,573
gallons
Minimum Mudwell volume =
5,464
gallons
Proposed Design =
6.50
feet wide, by
12.00
feet long, by
10.00
feet deep
51834
gallons
Back Wash Pump Capacity =
450
gpm
Mudwell pump capacity =
193
gpm
POST AERATION
Post Aeration Volume =
2,891
gallons
Proposed Design =
6.00
feet wide, by
9.50
feet long, by
7.00
feet deep
2,985
gallons
r----------------------------------------- ------- 1
1.0 gpm / sf 0_185 m2-------
15 gpm / sf 10 min. duration
10.45 jhi water 1 0 1 bottom slab
10.00 1hiwater 1 0 pump stop
1.5 times average daily flow
r'---- ------------------------- ---------------
---�-�
0_3 m9d 15 minutes I
��----J
7.00 Jeff weir 0 bottom slab
EAA Appendix H - Final Design Basis - 02-17-07.xis
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PM
Aqua Greystone WVffP
rARCADIS
Basis of Design Calculations
/ Proposed VWVTP Design
Infrastructure, environment, buildings GEH
February 2007
SLUDGE HOLDING
Minimum liquid volume = 18,500 gallons
Proposed Design = 5.50 feet wide, by
20.00 Ifeet long, by
12.00 feet deep
9,874 gallons each
190747 gallons total
AERATION SYSTEM
10% of 0
-----------------------m-----d i------
I .185 ------
12.00 hi water 0 1 bottom slab
Flow Equalization Blower:
124 cfm 20
cfm/K CF
6,183
CF
Treatment Plant blower:
Aeration:
the greater of
3,150 cfm / lb. BOD, or
370
lb. BOD
1,166
cfm
30 cfm per 1,000 CF
30,912
CF
927
cfm
1,166
cfm
Sludge Holding Tank:
30 cfm per 1,000 CF
2,640
CF
79
cfm
Sludge air lift pump:
4 cfm per pump
6
pumps
24
cfm
Skimmer air lift pump:
2 cfm per pump
4
pumps
8
cfm
Post Aeration:
10 cfm per 1,000 CF
399
CF
4
cfm
3,375
cfm
Filter air acour blower:
29 cfm 1
cfm I sf
29
square feet, each
FLOW METERING
V-notch weir, see hydraulics
DISINFECTION
UV disinfection modules
STANDBY POWER
Engine driven generator
EAA Appendix H - Final Design Basis - 02-17-07.xis
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GREYSTONE WWTP EXPANSION & RELOCATION
ENGINEERING ALTERNATIVES ANALYSIS
Appendix I - Direct Discharge
Preliminary Opinion of Cost and Present Value Calculations
This Alternative includes the following improvements:
1) 0.185 MGD wastewater treatment plant
2) Demolition of existing WWTP
3) 8-Inch discharge sewer to Unnamed Tributary of Belews Creek
AQUA North Carolina, Inc.
February 2007
ITEM NO.
I ITEM DESCRIPTION
QUANTITY
UNITS
UNIT PRICE
TOTAL
CAPITAL COSTS
1
0.185 MGD Wastewater Treatment Plant
185,000
gpd
$ 12
$
2,220,000
2
Demolition of Existing WWTP
1
Lump Sum
25,000
25,000
3
10-Inch Gravity Sewer Outfall
500
L.F.
30
15,000
4
Outlet Structure at Discharge
1
Lump Sum
5,000
5,000
5
Site Improvements
1
Lump Sum
50,000
50,000
6
Engineering @ 10%
1
Lump Sum
231,500
231,500
Sub -Total
Contingencies
Total
$
1 $
2,546,500
763,950
3,310,450
OPERATION AND MAINTENANCE COSTS (Present Value, 20 Yr Life, 5.875% Interest)
-
Annual Aqua Sewer Use Fees @ $20.00/Month (Flat Rate)
385
Each
240
92,400
Sub -Total $
92,400
Present Worth Factor
11.59
PV for O&M and Sewer Use Fees $
1,070,660
MR
TOTAL NET PRESENT VALUE (Present Value, 20 Yr Life, 5.875% Interest)
Capital Costs
$
3,310,450
Operation and Maintenance Costs (Present Value)
1,070,660
Total Net Present Value $
4,381,110
w■I
IaAI
ARCADIS G&M of North Carolina, Inc.
CN4AQ524.0000 Consulting Engineers
Appendix 1-1