NC0078115_Permit Issuance_20020531

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
Gregory J. Thorpe, Ph.D., Acting Director
May 31.2002
Mr. Dustin K. Metreyeon
AquaSource. Inc.
107 Commercial Park Drive
Concord, North Carolina 28027
Ar•: '
NCDENR
ENVIRONMENT AND NATURAL RESOURCES
Subject: Issuance of NPDES Permit NCO078115
Greystone Subdivision WWTP
Forsyth County
Dear Mr. Metreyeon:
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).
The Division has reviewed and approved your request to reduce the design flow rate from 0.04 MGD to 0.032
MGD. (Please refer to A.(1).) Based on the preliminary engineering report issued on October 15, 2001, it appears
that continued discharge at the existing outfall is the most feasible wastewater disposal alternative for this facility.
Please note that this facility is discharging high amounts of total residual chlorine (TRC). The average TRC
concentration in the effluent should be below 17 µg/L (0.017 mg/L). This facility discharged concentrations well
above 17 µg/L during 2000 and 2001. Unless these concentrations are reduced, the Division may reopen this
permit to include a chlorine limit
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 Christie Jackson at telephone number (919)
733-5083, extension 538.
Sincerely.
ORIGINAL SIGNED BY
SUSAN A. INIL�9.�
Gregory J. Thorpe,
cc: Central Files
Winston-Salem Regional Office/Water Quality Section
NPDES Units
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Acton Employer VISIT US ON THEINTERNET@httpJ/h2o.enr.state.nc.us/NPDES

Permit NCO078115
STATE OF NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
PERMIT
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELIMINATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful
standards and regulations promulgated and adopted by the North Carolina Environmental
Management Commission, and the Federal Water Pollution Control Act, as amended,
AquaSource, 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 unnamed tributary to 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 July 1, 2002.
This permit and authorization to discharge shall expire at midnight on February 28, 2007.
Signed this day May 31, 2002.
ORIGINAL. SIGNED BY
SUSAN A. WILSON
Gregory J. Thorpe, Ph.D., Acting Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit NCO078115
SUPPLEMENT TO PERMIT COVER SHEET
AquaSource 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. Discharge from said treatment works at the location specified on the attached
map into an unnamed tributary to Belews Creek, classified C waters in the
Roanoke River Basin.

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Latitude: 36010'03" Stream Class: C
Longitude: 80005'08" Subbasin: 030201
quad # C 18NE
Receiving Stream: UT to Belews Creek
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Location' .�
NC0078115-AquaSource-Greystone Sub.
Forsyth County

Permit NCO078115
A. (1.) EFFLUENT LINIITATIONS AND MONITORING REQUIREMENTS - FINAL
During the period beginning on the effective date of this permit 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
Avera
Weekly
Average
Daily
Maximum
Measurement
Frequency
Sample Type
Sample Locatlon'
Flow
0.032 MGD
Continuous
Recording
Influent or Effluent
BOD, 5-day (209C)
23.0 mg/L
34.5 mg/L
Weekly
Composite
Effluent
Total Suspended Residue
30.0 mg/L
45.0 mg/L
Weekly
Composite
Effluent
NH3 as N
(April 1- October 31
2.0 mg/L
Weekly
Composite
Effluent
NH3 as N
November 1- March 31
4.0 mg/L
Weekly
Composite
Effluent
Dissolved Oxygen2
Weekly
Grab
Effluent,
Upstream &
Downstream
Fecal Coliform (geometric mean)
200/100 ml
400/100 ml
Weekly
Grab
Effluent
Total Residual Chlorine
2/Week
Grab
Effluent
Temperature (QC)
Daily
Grab
Effluent
Temperature (°C)
Weekly
Grab
Upstream &
Downstream
pH3
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

DRAFT NPDES NCO078115
Subject: DRAFT NPDE94NCO078115
Date: Fri, 19 Apr 200214:46:55 -0400
From: Steve Mauney <[e-mail]>
Organization: NC DENR Water Quality
To: Christie Jackson <Christie [e-mail]>
CHRISTIE-I have reviewed the draft for GREYSTONE SUBDIV., in Forsyth
County and it looks fine. If you have any questions on it later, please
let me know. --Steve
Steve Mauney
NC DENR Winston-Salem Regional Office
Division of Water Quality, Water Quality Section
585 Waughtown Street
Winston-Salem, NC 27107
Voice: [phone] ext 262
FAX: [phone]
STEVE MAUNEY <[e-mail]>
ENVIRONMENTAL ENGINEER
DIVISION OF WATER QUALITY
ENVIRONMENT& NATURAL RESOURCES
1 of 1 4/22/02 8:49 AM

NO AROLINA��
FO� COUNTY
d
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 D.H. Stanfield, who being duly sworn, deposes and says: that he is
Controller of the Winston-Salem Journal, engaged in the publishing of a newspaper
known as Winston-Salem Journal, published, issued and entered as second class mail
in the City of Winston-Salem, in said county and State: that he is authorized to
make this affidavit and sworn statement: that the notice or other legal advertisement,
a true copy of which is attached hereto, was published in Winston-Salem Journal on
the following dates:
March 23, 2002
and that the said newspaper in which such notice, paper document, or legal
advertisement was published was, at the time of each and every such publication, a
newspaper meeting all the requirements and qualifications of Section 1-597 of the
General Statues of North Carolina and was a qualified newspaper within the meaning
of Section 1-597 of the general statues of North Carolina.
This 25th day of March, 2002 LA
(signature of pers n naking affidavit)
Sworn to and subscribed before me, this 25th day of h, 2002
Nota ublic
Ay Commission expires: September 28, 2005
OFFICIAL SEAL
tNotary
.=5 /f
My Commission
Public, North Carolina
COUNTY OF FORSYTH
KIMALE 0 SON
Expires
0
IN

NCDENR-Greystone flow reduction
Subject: NCDENR-Greystone flow reduction
Date: Tue, 12 Mar 2002 11:10:48 -0500
From: "Dustin Metreyeon" <[e-mail]>
To: [e-mail]
CC: [e-mail], "Carolyn McFalls" <[e-mail]>,
"Glenn LaBrecque" <[e-mail]>
Per your request, this e-mail is intended to convey our desire to change
the existing effluent flow limit of .040 mgd to .032 mgd. As we discussed,
please make this change commensurate with permit renewal for Greystone
WWTP .
Thank you for making me aware of this situation.
Dustin K. Metreyeon
NC Project Manager
107 Commercial Park Drive
Concord NC 28027
1.704.788.9497
1 of 1 3/12/0211:15 Ahi

Residual Chlorine and Ammonia Toxicity Assessment
Residual Chlorine
Ammonia as NH3
(summer)
s7Q10 (CFS)
4
s7Q10 (CFS)
0
DESIGN FLOW (MGD)
?
DESIGN FLOW (MGD)
0.32
DESIGN FLOW (CFS)
0.496
DESIGN FLOW (CFS)
0.496
STREAM STD (UG/L)
17.0
STREAM STD (MG/L)
1.0
UPS BACKGROUND LEVEL (
0
UPS BACKGROUND LEVEL
0.22
IWC (%)
100.00
IWC (%)
100.00
Allowable Concentration (ug
17.00
Allowable Concentration (rr
1.00
Ammonia as NH3
(winter)
.......................
.......................
w7Q10 (CFS)
>_4Q8>
Fecal Limit 2001100ml DESIGN FLOW (MGD)
0.32
Ratio of 0.0 :1 DESIGN FLOW (CFS)
0.496
STREAM STD (MG/L)
1.8
UPS BACKGROUND LEVEL
0.22
IWC (%)
86.11
Allowable Concentration (rr
2.05
3/12/02
CRJ NCO078115

f.�w
AquaSource
A DQE Company
July 18,2001
NCDENR
Attn: Charles H. Weaver Jr.
NPDES Unit
1617 Mail Service Center
Raleigh, N.C. 27699-1617
Mr. Weaver,
107 Commercial Park Drive
Concord, NC 28027
Ref. Permit Rencwal Application
NPDES # NCO078115
Greystone WWTP
Forsyth County
704-788-9497
704-788-6006 (fax)
Forwarded herewith is the above reference permit renewal application for the Greystone
W WTP.
Sludge management for this facility begins with wasting and supemate draw -off until such time
the digester becomes full. At this time Forsyth Rooter, a contract sludge hauler, is contracted to
remove digested sludge for ultimate disposal.
As there are no changes to report, we respectfully request reissuance of this permit as currently
written.
If you have any questions, please call me at 1-800-537-1998
Sinc,e)ly ��
Project Manager
Cc: File
Glenn Labreque
Carolyn McFalls

Stdte of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
September 15, 2000
Mr. Glenn LaBrecque
AQUASOURCE, INC.
6960 Professional Parkway East,
Suite 400
Sarasota, Florida 34240
WA
AP
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
Subject: NPDES Permit Modification — Name/Ownership Change
Permit NCO078115
AQUASOURCE, INC.
(Formerly Rayco Util/Greystone Subdiv.)
Forsyth County
Dear Mr. LaBrecque:
In accordance with your request received August 31, 2000, the Division is forwarding the subject permit
modification. This modification documents the change in name/ownership at the subject facility. All other terms and
conditions in the original permit remain unchanged and in full effect. This permit modification is issued under the
requirements of North Carolina General Statute 143-215.1 and the Memorandum of Agreement between North Carolina and
the U. S. Environmental Protection Agency dated December 6, 1983.
If any parts, measurement frequencies or sampling requirements contained in this permit modification 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 a written petition conforming to Chapter 150B of the North Carolina General
Statutes, filed with the Office of Administrative Hearings, Post Office Drawer 27447, Raleigh, North Carolina 27611-7447.
Unless such demand is made, this decision shall be final and binding.
This permit does not affect the legal requirement to obtain other permits which may be required by the Division of
Water Quality, the Division of Land Resources, Coastal Area Management Act, or any other Federal or Local government
permit that may be required. If you have any questions concerning this permit, please contact Valery Stephens at the
telephone number or address listed below.
Sincerely,
fi�err T. Stevenscc: Central Files
Winston-Salem Regional Office, Water Quality Section
NPDES Unit
Point Source Compliance Enforcement Unit
1617 Mail SenAce Center, Raleigh, North Carolina 27699-1617
919 733-5083, extension 520 (fax) 919 733-0719
VISIT US ON THE INTERNET 0 http://h2o.enr.state,nc.us/ Valery.Stephenshnanail.net

y Permit NCO078115
STATE OF
NORTH CAROLINA
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
DIVISION OF WATER QUALITY
TO DISCHARGE WASTEWATER UNDER THE
NATIONAL POLLUTANT DISCHARGE ELBONATION SYSTEM
In compliance with the provision of North Carolina General Statute 143-215.1, other lawful standards and regulations
promulgated and adopted by the North Carolina Environmental Management Commission, and the Federal Water Pollution
Control Act, as amended,
AQUASOURCE, INC.
is hereby authorized to discharge wastewater from a facility located at
Greystone Subdivision WWTP
North of Kernersville
Forsyth County
to receiving waters designated as an unnamed tributary to 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 September 15, 2000.
This permit and authorization to discharge shall expire at midnight on January 31, 2002.
Signed this day September 15, 2000.
41
err T. Stevens, Director
Division of Water Quality
By Authority of the Environmental Management Commission

Permit NCO078115
SUPPLEMENT TO PERMIT COVER SHEET
AQUASOURCE, INC., is hereby authorized to:
1. Continue to operate an existing 0.040 MGD package type wastewater treatment plant located at
Greystone Forest WWTP, Lot 74, Greystone Forest Subdivision, north of Kernersville in Forsyth
County.
2. Discharge from said treatment works at the location specified on the attached map into an unnamed
tributary to Belews Creek, classified C waters in the Roanoke River Basin.

Matte of.North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bill Holman, Secretary
Kerr T. Stevens, Director
`••
A;lk W
NCDENR
NORTH CAROLINA DEPARTMENT OF
ENVIRONMENT AND NATURAL RESOURCES
PERMIT NAME/OWNERSHIP CHANGE FORM
I. CURRENT PERMIT INFORMATION:
Permit Number: NC007/8/1/1/5
1. Permit holder's name: Rayco Utilities, Inc.
2. Permit's signing official's name and title: Leonard Stogner
(Person legally responsible for permit)
Vice President
(Title)
3. Mailing address: 107 Commercial Park Drive City: Concord
State: N.C. Zip Code: 28027 Phone: ( 704 ) 788-9497
E-mail address: lstogner(@,acivasource.com
11. NEW OWNERMAME INFORMATION:
1. This request for a name change is a result of:
X a. Change in ownership of property/company
b. Name change only
c. Other (please explain):
2. New owner's name (name to be put on permit):
AquaSource, Inc.
3. New owner's or signing official's name and title:_ Glenn LaBrecque
(Person legally responsible for permit)
Regional Manager
(Title)
4. Mailing address:_ 6960 Professional Pkwy. East, Suite 400 City: Sarasota
State: Florida Zip Code: 34240 Phone: [phone]
E-mail address: glabrecgueOaquasource.com
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50% recycled / 10% post -consumer paper

PERMIT NAME / OWNERSHIP CHANGE FORM
THIS APPLICATION PACKAGE WILL NOT BE ACCEPTED BY THE DIVISION OF WATER QUALITY UNLESS
ALL OF THE APPLICABLE ITEMS LISTED BELOW ARE INCLUDED WITH THE SUBMITTAL.
REQUIRED ITEMS:
1. This completed application form
2. Legal documentation of the transfer of ownership (such as a contract, deed, articles of
incorporation)
For changes of ownership, this form must be completed and signed by both the current permit
holder and the new owner of the facility.
For name change only, the current permit holder must complete and sign the Applicant's
Certification.
Current Permittee's Certification:
I, Leonard E. Stogner , attest that this
application for name/ownership change has been reviewed and is accurate and complete to
the best of my knowledge. I understand that if all required parts of this application are not
completed and that if all required supporting information and attachments are not included,
this application package will be returned as incomplete.
Sign
Applibd`nt's Certification:
Date: Z-9/
I, Glen LaBrecgue �nd
attest that this application for a
name/ownership change has been reviewed and is accurate complete to the best of my
knowledge. I understand that if all required parts of this application are not completed and that
if all required supporting information and attachments are not included, this application
package will be returned as incomplete.
Signature: Y �-- Date: 0
THE COMPL D APPL TION PACKAGE, INCLUDING ALL SUPPORTING
INFORMATIO &' IALS, SHOULD BE SENT TO THE FOLLOWING ADDDRESS:
NC DENR / DWQ
NPDES Unit
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Version 9-99

State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
James B. Hunt, Jr., Governor
Bil Holman, Secretary
Kerr T. Stevens, Director
July 10. 2000
Mr. Glen LaBrecque
Aqua5ource Services & Technologies, Inc.
567Interstate Boulevard
Sarasota, Florida 54240
NCDENR
Subject: Name/Ownership Change Request
Return #2079
Rayco Utilities. Inc. Facilities
Willowbrook Utilities, Inc. Facilities
Dear Mr. LaBrecque:
With this letter, the Division of Water Quality is hereby returning the request for Name/Ownership
change and all supporting documentation, for the above referenced projects. This request was originally
received on January 19, 2000. Additional information was requested on February 5. 2000 and again on
February29, 2000. To date, all information requested has not been received.
You are free to resubmit this package at any time with a completed Name/Ownership change form and
supporting legal documentation, such as a contract or deed. If you have any questions, feel free to contact
Christie Jackson at [phone]. extension 558.
Sincerely,
6� -74`
David A. Goodrich
NPDES Unit Supervisor
cc: Central Files
NPDES Unit Files
Leonard Stogner Rayco Utilities. Inc.
107 Commercial Park Drive, SW
Concord. NC 28027
P.O. Box 29535, Raleigh, North Carolina 27626-0535 Telephone [phone] FAX [phone]
An Equal Opportunity Affirmative Action Employer 50 % recycled 1 10% post -consumer paper

Attachment A
Facility Name NPDES Permit Number
Pine Valley
NCO028941
Mikkola Downs
NCO067091
Melbille Heights
NCO050792
Penman Heights
NCO055191
Greystone
NCO078115
Bria wood
NCO028746
Forestridge
NCO063720
McCarron
NCO071781
Willowbrook
NCO073539
Quarry Hills
NCO022446

East Regional Office
567 Interstate Boulevard
Sarasota, Florida 34240
Phone: [phone]
Faa: 941-377-8743
January 14, 2000
Mr. Tommy Stevens
Director, Division of Water Quality
NIT'
. � V
V"
11 o�
7
P A0
AquaSourcelnc-
h"St
weskN
N.C. Department of Environment and Natural Resources
P.O. Box 29535
Raleigh, N.C. 27626-0535
J 1AX
it .*I
JANf9
flrv. OF WarER
D1REe7OR,S OFFICE
1
Subject: AquaSource, Inc. acquisition of Rayco Utilities, Inc. and Willowbrook Utilities, Inc
Dear Mr. Stevens,
I appreciated the opportunity to meet with you and your staff on Monday, May 17, 1999. It is very
helpful for us to meet the people we will be working with and to begin to build an understanding of
the state's concerns and expectations. As we mentioned during the meeting, our goal is to provide
quality cost efficient service to our customers while complying or exceeding state, federal, and local
gulations. I appreciate the expressed willingness of you and your staff to work with us in
0ri0#anding the state's expectations.
tuber 24,1999, AquaSource Inc. acquired ownership of Rayco Utilities, Inc and
"Mk Utilities, Inc. AquaSource Inc. is now the responsible party for all matters pertaining to
tts2lt�s, including any Notice of Violations, enforcement actions, environmental concerns, etc.
1 Ciaent or pending enforcement actions issued prior to November 24,1999, are the
ottstty of the previous owners {Leonard and Rachel Stogner) and will remain their
postty to resolve any such matters with your department.
t of . r.to make this change in responsibility work within the legal requirements of the permit
sjstm, the NPDES permit documentation should be revised to reflect the new ownership and
responsibility. Therefore, please accept this letter as my formal request, as an officer of AquaSource,
Inc., that the records for all facilities listed on Attachment A be updated and revised to reflect
ownership by AquaSource, Inc. In addition, that our Regional Manager, Glenn LaBrecque, be
designated as the responsible party. W. Leonard Stogner who as a former owner of Rayco Utilities,
Inc. and Willowbrook Utilities, Inc. also requests this change and further acknowledges that all
matters described and discussed herein are accurate also signs this letter.
Mr. Stogner now works as an employee of AquaSource m a role where he is closely involved in the
day to day operations but no longer serves in a capacity as a responsible party. He now reports
directly to our Regional Manager, Glenn LaBrecque. We believe Mr. Stogner will provide valuable
assistance in the position of industrial and construction manager. His knowledge of operations will
be utilized in coordinating the efforts of our operators.
We hope that your staff and particularly the regional staff will understand that it is optional whom
they choose to contact. However, we would hope that they would continue to contact Mr. Stogner or
others within the previous Rayco staff for the recurring and routine interactions that are a course of
normal day to day operations such as to coordinate an inspection, discuss a minor matter, or direct
questions. If for any reason your staff prefers, they may always directly contact Regional Manger
Glenn LaBrecque, or me.
We would expect that if there are any significant problems or concerns, any Notices of Violation, any
enforcement actions, or any other "official" communications, those would be addrd*d dir�c y to
the Regional Manager, Glenn LaBrecque.

IMS
In conclusion, let me again thank you and your staff for the courtesy extended to us during our
meeting. We look forward to doing business in North Carolina and working to cam Your oath oti Halftust
m our
to compliance. Kyou or your staff should have any questions, Y
information, or wish to discuss matters in more detail, please feel free to contact Mr. LaBrecque or
me.
Sin y,
Robert J. Gapio
President, East Region
AquaSource, Inc.
CC: Mr. Glenn LaBrecque
Mr. Johnnie Overton, P.E.
Mr. Kevin Read
Mr. Thurman Horne, P.E.
Leonard E. Stogner
Vice President
Rayco Utilities, Inc.

February 6, 2002
SUMMARY: Preliminary Engineering Report
AquaSource, Inc.
Greystone Forest Subdivision WWTP
NCO078115
RECOMMENDATIONS
1. Approve the Preliminary Engineering Report, received August 30, 2001, and amended
November 5, 2001.
2. Note on the need for a revised permit application, and comment on the conceptual project
design, as detailed below.
3. Modify the facility's NPDES permit at renewal (pending) to reflect a decrease in permitted
flow, as requested.
SCOPE
AquaSource, Inc. proposes to replace the existing activated sludge package plant and make related
modifications at its Greystone Forest Subdivision WWTP. The improvements are necessary to ensure
continued compliance, because the plant is old and nearing the end of its useful life.
Horizon Engineering prepared this preliminary engineering report for the project, including an alternatives
analysis, to get approval on the proposed approach and the conceptual process design.
BACKGROUND
The Greystone Forest Subdivision WWTP is a 0.040 MGD extended air package plant serving 72 homes in
the Greystone development. It is one of several facilities that AquaSource acquired from Rayco, Inc.,
beginning in 1998. In order to gain approval of the transfer, AquaSource committed to making various
improvements to the affected facilities.
At 72 homes, the Greystone Forest subdivision is already built out. AquaSource does not appear to have
plans for any expansion of the service area.
Monthly average permit limits for the facility are:
Flow
0.040 MGD
BOD
23.0 mg/L
TSS
30.0 mg/L
NH3
2.0 mg/L (S) and 4.0 (W)
Fecals
200/100 mL
AquaSource proposes to replace the existing WWTP with a newer, dual -train package system. It will keep
some of the existing treatment units, which are still in sound condition and working well. The proposed
improvements include:
• installation of a refurbished equalization tank (approx. 50% of the new ADF) and sludge holding
tank (1 ft3/pop. eq.);
• installation of two 20,000 gal. package plants in parallel (30 hrs. HDT at new ADF); and
• addition of an influent pump station to move wastewater to the new plant (which will be placed
above -ground), equalization pumps, and controls.
PROJECT DESCRIPTION
As part of the engineering analysis, AquaSource evaluated the most likely discharge alternatives. The initial
report examined:
(1) connection to the Winston-Salem collection system,
-1-

SUMMARY - Preliminary Engineering Report (cont.)
AquaSource, Inc.
NPDES Permit No. NCO078115
(2) on -site surface &/or subsurface disposal,
(3) wastewater reuse, and
(4) surface water discharge.
At the recommendation of the WSRO (Steve Mauney), AquaSource also considered the possibility of
connecting to another private facility in the area, CWS - Abingdon, and submitted these results as an
addendum to the original PER.
The analysis appears adequate and concludes that replacement of the treatment plant and continued discharge
to the UT to Belews Creek is the most feasible alternative. In addition, the report proposes to reduce the
permitted flow for the facility to 0.032 MGD, based on actual flows at build -out.
REVIEW SUMMARY
The project approach and the conceptual design seem acceptable, with certain exceptions or precautions. The
following are potential design issues:
• reliability measures. (1) The new design does not include a backup power generator; however,
this is probably acceptable due to the addition of an influent pump station: electric service is
required to move wastewater to the plant, so any loss of power will prevent any discharge from
occurring. (2) Critical pumps, blowers, and other equipment must be designed so that, with one
unit out of service, the remaining units can perform adequately under design conditions (average
or peak flows, as appropriate).
• flow splitter and equalization. The flow control/ splitter box should be designed with individual
control weirs for each train (adjustable) and should include an overflow so that excess
wastewater pumped to the box is returned to the equalization tank.
• sludge holding capacity. The 1 CF/population equivalent design criterion provides marginal
storage capacity, even given that the plant uses a licensed waste disposal company to transport
waste sludge to a nearby POTW. The ATC request for these improvements should justify
whatever capacity is proposed, to ensure the plant can reliably waste sludge and store it prior to
disposal.
PERMIT IMPLICATIONS
The PER proposes to reduce the ADF and the permitted flow from 40,000 gpd to 32,000 gpd. The permit will
need to be modified accordingly prior to or along with the ATC issuance.
The facility's NPDES permit expires on January 31, 2002. AquaSource submitted an application for renewal
in July, 2001, but the application still refers to the original 0.040 MGD flow. AquaSource will submit a letter
or a new application to revise the proposed flow value for the upcoming permit renewal.
DATES
The request was originally received on 08/30/2001. Additional information was received 11/5/2001.
No staff report was requested, but Steve Mauney of the WSRO was actively involved in the review.
- end of summary -
-2-

Horizon Engineering & Consulting, Inc.
Mr. Mike Templeton
Division of Water Quality
NC DENR
1617 Mail Service Center
Raleigh, N.C. 27699-1617
Subject: Addendum No. 1
Preliminary Engineering Report
Proposed Replacement of Existing WWTP
AquaSource, Inc.
Greystone Forest Subdivision WWTP
NC0078115
Forsyth County
Dear Mr. Templeton:
107 Commercial Park Drive
Concord. N.C. 28027
704-788-9497
Fax: 7..4 788 :.....,.
October 18, 2001
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Attached are three (3) copies of the subject addendum to the report which was submitted earlier
dated August 14, 2001. This addendum was prepared to consider the alternative of connecting to
the Abbington Subdivision wastewater treatment facility. The existence of this facility was
brought to our attention by your Winston-Salem regional office.
We appreciate this being called to our attention (curiously, this doesn't appear to be included in
EPA's Enviromaps) and understand that this should be considered as a potentially viable
alternative. As you will see from the addendum, as a consequence of our review, this does not
appear to be either politically or economically practical.
We appreciate the interaction and assistance of the NC DENR staff and your willingness to
review this proposal before we endeavor to prepare final design plans and specifications and
submit a request for authorization to construct. We are anxious to proceed with design and
construction so that we can keep on track with our commitments to improve the existing facilities.
I will appreciate any feedback or any discussion we can have, so please call me when it is
convenient and when you have had a chance to review. Once again, my thanks for the assistance
you have provided. If I can be of any assistance or if you have any questions, please call me (704-
788-9497.)
C: Jack Floyd
Steve Mauney
Glenn LaBrecque
Carolyn McFalls
James Cool
Dusty Metreyeon

1
Addendum No. 1
Preliminary Engineering Report
Replacement of Existing Wastewater Treatment Plant
AquaSource, Inc.
Greystone Forest Subdivision
Kernersville, N.C.
Forsyth County
Prepared for: AquaSource, Inc.
107 Commercial Park drive
Concord, N.C. 28027
Ph: 704-788-9497
Prepared by:
Date:
J. Thurman Horne, P.E.
Horizon Engineering & Consulti
107 Commercial Park drive
Concord, N.C. 28027
Ph: 704-788-9497
October 18, 2001
411{Itit/1tt'rd1
CA!01 <'��.

i
Introduction:
Discussion:
Evaluation:
The intent of this addendum is to supplement the original Preliminary
Engineering Report dated August 14, 2001 by evaluating the possibility of
eliminating the current wastewater treatment plant by connecting to an
existing wastewater treatment plant that is within a reasonable proximity
for consideration. This existing facility is operated by Carolina Water
Systems, Inc. and serves the Abbington Subdivision (NC0060461.)
Based on discussion with NC DENR staff, this existing facility has
available hydraulic capacity (0.200 MGD) and has the potential to be
expanded (0.385 MGD.) The existing facility is a dual train, extended
aeration facility with flow equalization, post aeration. Chlorination and
dechlorination. In addition to customary "secondary" limits, the facility has
an ammonia nitrogen limit of 2.0 mg/I.
The engineer has made several inquiries to Carolina Water Systems, Inc.
beginning September 10, 2001 to discuss the possibilities of connecting to
the existing system. There has been no meaningful progress in getting an
indication of whether a connection is possible and/or the costs and
conditions that would be involved. Whereas more than a month has past
and there has been no indication that this may be practical, it is
considered that the possibility of getting the necessary approvals is
remote.
Further, the engineer has learned from conversation with the Water
Quality Section, Public Staff of the N.C. Utilities Commission (Mr. Jack
Floyd, P.E.) that the facility capacity is controlled to some extent by
developer, pursuant to existing agreements. This may be a typical
arrangement wherein the developer absorbs the cost of constructing the
wastewater treatment plant while retaining the rights to the capacity in the
plant to serve his development growth. It is my understanding that there
have been other attempts to connect to this facility by outside parties and
that these requests have been denied.
In recognition of the above, it seems reasonable to conclude that it is
unlikely that further pursuit of this alternative is likely to yield any positive
results. However, the engineer has prepared an estimate of the costs of
this alternative making estimates of the expected costs if the necessary
approvals could be obtained.

3
Summary and Conclusions:
As can be seen from a comparison of the net present value of this
alternative to the various alternatives considered in the original report,
even if the connection approvals could be obtained, this alternative
is significantly more costly than the option of continuing discharge.
Compared to the cost of replacing and upgrading the existing Greystone
wastewater treatment plant, the estimated capital cost would be
approximately 154% greater and the Net Present Value is approximately
132 % greater. This represents a difference of $ 21254 NPV per
connection. This would clearly represent a significant and unnecessary
financial obstacle to the residents in the Greystone development.
In light of the financial impracticality, it is not necessary to further pursue
whether connection is politically acceptable to the owner and/or operator
of the Abbington Subdivision wastewater treatment plant.
The most practical and cost effective alternative is the continued
discharge with the replacement of the old and deteriorating facilities.
Cost estimate:
Alternative 132: Connection to Abbington Subdivision Existing WWTP:
Capital Cost:
Item:
Quantity:
Unit Cost:
Cost:
3" force main sewer
31500 LF
$ 9
$
31,500
Pump Station
1 Ea
$ 50,000
$
501000
(56 gpm @ 100' TDH)
Manholes (Air Release)
1 Ea
$ 21500
$
21500
Road Crossings
4 Ea
$ 71000
$
281000
Driveway Crossings
11 Ea
$ 11000
$
111000
Tie to exist. MH
1 Ea
$ 31000
$
31000
Flow metering station
1 Ea
$ 25,000
$
251000
Erosion Control
LS
$ 21000
$
21000
Surveying
3 days
$ 1,500
$
41500
Engineering
10 %
$
151300
Purchase 32,000 gpd
321000 gpd
*$ 4.63
$
1481080
capacity at CWS WWTP
Total Cost = $ 320,880

4
Operation & Maintenance Cost (Present Value, 20 year life, 8% interest):
Annual Cost
Pump Station/Force Main/Meter Station O&M 51000
Sewer Fees ($ 35/mo./user X 72 users X 12 mo/yr) 301240
Total Annual Cost = $353240
PV Annual Cost = $345,986
Total Net Present Value = $ 6669866
*Capacity Cost Estimated using IRS Means, Building Construction Cost Data 1998 cost
of $ 3.15/gallon capacity x 0.882 location factor x 1.066 inflation factor x 1.25 factor
(engineers estimate for increased cost due to nitrogen removal, flow equalization and
standby power) x 1.25 factor for sunk overhead (engineering, administration, etc.)
Est. capacity cost = 32,000 gpd x $ 3.15/gal x 0.882 x 1.066 x 1.25 x 1.25 = $ 1483080

MP I")LSS
State of North Carolina
Department of Environment
and Natural Resources
Division of Water Quality
Michael F. Easley, Governor
William G. Ross, Jr., Secretary
Gregory J. Thorpe, Ph.D., Acting Director
October 15, 2001
Mr. Dustin K. Metreyeon
AquaSource, Inc.
107 Commercial Park Drive
Concord, North Carolina 28027
A40�
NCDENR
Subject: Preliminary Engineering Report
Greystone Forest Subdivision W V7FP
NPDES Permit No. NCO078115
Forsyth County
Dear Mr. Metreyeon:
The Division of Water Quality's NPDES Unit has reviewed AquaSource, Inc.'s Preliminary
Engineering Report for the Greystone Forest Subdivision WWTP, submitted on your behalf by Mr.
Thurman Horne of Horizon Engineering & Consulting. The Division hereby accepts the report's
conclusion that replacement of the Greystone Forest treatment plant and continued discharge at the
existing outfall is the most feasible wastewater disposal alternative for the facility.
The report proposes to reduce the design flow rate from the current NPDES limit of 40,000 gpd to
3231000 gpd (p. 4, last para.). However, AquaSource's July, 2001 NPDES application still notes the
current permitted flow of 40,000 gpd. In order for the Division to accept an ATC request for the
proposed improvements, AquaSource must first submit either a letter or a revised permit application
requesting this change in the permit flow limit.
The report's Basis for Design appears to present a reasonable framework for the new wastewater
treatment plant design. However, the final design and your Authorization to Construct submittal
should address the following comments:
• Reliability measures. Pumps, blowers, and other critical systems must be designed so
that, with one unit out of service, the remaining units can perform adequately under
design conditions.
• Flow sputter and equalization. The flow control box should be designed to provide true
flow equalization as well as splitting flows to the two activated sludge trains. That is, it
should have an overflow (or similar feature) to ensure that it normally delivers no more
than some pre-set flow to the aeration basins and returns any excess to the equalization
tank.
• Sludge holding capacity. The sludge tank design appears to provide less than 30 days'
storage capacity for waste solids. The ATC request for these improvements should
include design calculations or other information to demonstrate that the tank volume is
sufficient to ensure reliable waste disposal.
1617 Mail Service Center, Raleigh, North Carolina 27699-1617 Telephone [phone] FAX [phone]
An Equal opportunity Affirmative Action Employer Internet: http://h2o.enr.state.nc.us/

AquaSource, Inc.
Greystone Forest Subdivision WWTP
Preliminary Engineering Report
If you have any questions about this approval, please contact Mike Templeton, at [phone],
extension 541.
Sincerely,
Original Signed by Mike Templeron for
Gregory J. Thorpe
Acting Director
Enclosures: Preliminary Engineering Report & Addendum
Copies: Winston-Salem Regional Office, Water Quality
Technical Assistance and Certification Unit
Mr. J. Thurman Horne at: Horizon Engineering & Consulting, Inc.
107 Commercial Park Drive
Concord, NC 28027
Central Files
NPDES Unit Files

SUMMARY: Preliminary Engineering Report
AquaSource, Inc.
Greystone Forest Subdivision WWTP
RECOMMENDATIONS
1. Approve the Preliminary Engineering Report, received August 30, 2001, and amended
November 5, 2001.
2. Note on the need for a revised permit application, and comment on the conceptual project
design, as detailed below.
3. Modify the facility's NPDES permit at renewal (pending) to reflect a decrease in permitted
flow, as requested.
SCOPE
AquaSource, Inc. proposes to replace the existing activated sludge :package plant and make related
modifications at its Greystone Forest Subdivision WVUTP. The improvements are necessary to ensure
continued compliance, because the plant is old and nearing the end of its useful life.
Horizon Engineering prepared this preliminary engineering report for the project, including an
alternatives analysis, to get approval on the proposed approach and the conceptual process design.
BACKGROUND
The Greystone Forest Subdivision WWTP is a 0.040 MGD extended air package plant serving 72
homes in the Greystone development. It is one of several facilities that AquaSource acquired from
Rayco, Inc., beginning in 1998. In order to gain approval of the transfer, AquaSource committed to
making various improvements to the affected facilities.
At 72 homes, the Greystone Forest subdivision is already built out. AquaSource does not appear to have
plans for any expansion of the service area.
Monthly average permit limits for the facility are:
Flow
0.040 MGD
BOD
23.0 mg/L
TSS
30.0 mg/L
NH3
2.0 mg/L (S) and 4.0 (V)
Fecals
200/100 mL
AquaSource proposes to replace the existing VVIWT'P with a newer, dual -train package system. It will
keep some of the existing treatment units, which are still in sound condition and working well. The
proposed improvements include:
• installation of a refurbished equalization tank (approx. 50% of the new ADF) and sludge
holding tank (1 W/pop. eq.);
• installation of two 20,000 gal. package plants in parallel (30 hrs. HDT at new ADF); and
• addition of an influent pump station to move wastewater to the new plant (which will be
placed above -ground), equalization pumps, and controls.
PROJECT DESCRIPTION
As part of the engineering analysis, AquaSource evaluated the most likely discharge alternatives. The
initial report examined:
- 1 -

SUMMARY - Preliminary Engineering Report (cont.)
AquaSource, Inc.
NPDES Permit No. NCO078115
(1) connection to the Winston-Salem collection system,
(2) on -site surface &/or subsurface disposal,
(3) wastewater reuse, and
(4) surface water discharge.
At the recommendation of the WSRO (Steve Mauney), AquaSource also considered the possibility of
connecting to another private facility in the area, CWS - Abingdon, and submitted these results as an
addendum to the original PER.
The analysis appears adequate and concludes that replacement of the treatment plant and continued
discharge to the UT to Belews Creek is the most feasible alternative. In addition, the.report proposes to
reduce the permitted flow for the facility to 0.032 MGD, based on actual flows at build -out.
REVIEW SUMMARY
The project approach and the conceptual design seem acceptable, with certain exceptions or
precautions. The following are potential design issues:
• reliability measures. (1) The new design does not include a backup power generator;
however, this is probably acceptable due to the addition of an influent pump station: electric
service is required to move wastewater to the plant, so any loss of power will prevent any
discharge from occurring. (2) Critical pumps, blowers, and other equipment must be
designed so that, with one unit out of service, the remaining units can perform adequately
under design conditions (average or peak flows, as appropriate).
• flow sputter and equalization. The flow control/ sputter box should be designed with
individual control weirs for each train (adjustable) and should include an overflow so that
excess wastewater pumped to the box is returned to the equalization tank.
• sludge holding capacity. The 1 CF/population equivalent design criterion provides marginal
storage capacity, even given that the plant uses a licensed waste disposal company to
transport waste sludge to a nearby POTW. The ATC request for these improvements should
justify whatever capacity is proposed, to ensure the plant can reliably waste sludge and store
it prior to disposal.
PERMIT IMPLICATIONS
The PER proposes to reduce the ADF and the permitted flow from 40,000 gpd to 32,000 gpd. The
permit will need to be modified accordingly prior to or along with the ATC issuance.
The facility's NPDES permit expires on January 31, 2002. AquaSource submitted an application for
renewal in July, 2001, but the application still refers to the original 0.040 MGD flow. AquaSource will
submit a letter or a new application to revise the proposed flow value for the upcoming permit renewal.
DATES
The request was originally received on 08/30/2001. Additional information was received 11 /5/2001.
No staff report was requested, but Steve Mauney of the WSRO was actively involved in the review.
- end of summary -
-2-

Horizon Engineering & Consulting, Inc.
107 Commercial Park Drive
Concord, N.C. 28027
704-788-9497
August 24, 2001 Fax. [phone]
Mr. Mike Templeton
Division of Water Quality
NC DENR
1617 Mail Service Center
Raleigh, N.C. 27699-1617
Subject: Preliminary Engineering Report
Proposed Replacement of Existing WWTP
AquaSource, Inc.
Greystone Forest Subdivision WWTP
NCO078115
Forsyth County
Dear Mr. Templeton:
AU G 3 0 2001
I �DENRMATER QUALITY
POINT SOURCE BRANCH
As you will recall, we discussed that AquaSource has a commitment to the NC Utilities
Commission to replace the existing, aging wastewater treatment plant at Greystone Forest
Subdivision. I appreciate the information and assistance you have provided.
We have attached three (3) copies of the subject report which describes the preliminary design of
the proposed replacement facilities plus, an evaluation of other possible alternatives. We
appreciate your willingness to review this proposal before we endeavor to prepare final design
plans and specifications and submit a request for authorization to construct. We agree that it
makes much better sense and is more efficient for both the state and AquaSource to discuss these
plans first to minimize time, resources and delays later on.
I will appreciate any feedback or any discussion we can have, so please call me when it is
convenient and when you have had a chance to review. Obviously, AquaSource would like to
proceed with design as soon as possible.
Once again, my thanks for the assistance you have provided. If I can be of any assistance or if you
have any questions, please call me (704-788-9497.)
C: Jack Floyd
Glenn LaBrecque
Carolyn McFalls
James Cool
Dusty Metreyeon

N�)6 (%"
Preliminary Engineering Report
Replacement of Existing Wastewater Treatment Plant
AquaSource, Inc.
Greystone Forest Subdivision
Kernersville, N.C.
Forsyth County
Prepared for: AquaSource, Inc.
107 Commercial Park drive
Concord, N.C. 28027
Ph: 704-788-9497
��E' D
fg M
AUG 3 0 2001
DENR-WATER QUALITY
POINT SOURCE_ BAH
Prepared by: J. Thurman Horne, P.E.
Horizon Engineering & Consulting, Inc.
107 Commercial Park drive
Concord, N.C. 28027
Ph: 704-788-9497
Date: August 14, 2001

Preliminary Engineering Report
Replacement of Existing Wastewater Treatment Plant
AquaSource, Inc.
Greystone Forest Subdivision
Kernersville, N.C.
Forsyth County
Prepared for: AquaSource, Inc.
107 Commercial Park drive
Concord, N.C. 28027
Ph: 704-788-9497
Prepared by:
, ,ollM#llgsj,,
AR l �.
�� _e�GE�$lnw, •. 9
tHURMN.1
J. Thurman Horne, P.E.
Horizon Engineering & Consulting, Inc.
107 Commercial Park drive
Concord, N.C. 28027
Ph: 704-788-9497
r'"°N
Date: August 14, 2001

2
eolb\
Table of Contents
Page
Section1: General...............................................................................3
1.01 Introduction: ................................................................... 3
1.02 Scope: ........................................................................... 3
Section2: Background Information........................................................4
2.01 Project Area: ................................................................... 4
2.02 Site Characteristics: .......................................................... 4
Section 3: Existing Utilities....................................................................4
3.01 Public Facilities: ............................................................... 4
3.02 Private Facilities: .............................................................. 4
Section 4: Alternatives For Service.........................................................4
4.01: 4n site surface and/or subsurface disposal: ........................ 5
4.02: Wastewater Reuse: ........................................................ 5
roft� 4.03: Surface Water Discharge................................................6
Section5: Summary and Conclusions: ................................................... 7
Section 6: Proposed Wastewater Treatment Facilities: .............................. 7
Appendix A Location of Nearest Public Sewer
Appendix B Cost Analysis of Alternatives
Appendix C Letters Reference Septic Tank Disposal
Appendix D Summary of Effluent Flow Rates
Appendix E Preliminary Engineering Design
Selected Alternative
Replacement and Improvement of Existing
Wastewater Treatment Facilities

3
/0"'� Section 1: General
1.01 Introduction:
AquaSource, Inc. (AquaSource) currently owns and operates an existing
wastewater treatment plant serving Greystone Forest Subdivision
(Greystone), located north of Kemersville, N.C. in Forsyth County. The
facility was acquired by AquaSource from the former owner/operator
(Rayco Utilities, Inc.) as an acquisition of various private utility operations
in North Carolina beginning in 1998.
In the course of obtaining approval for transfer of utility franchise approval
and the reissuance of NPDES permit NC 0078115, AquaSource has
committed to various improvements to facilities that were acquired. A
significant item of this commitment is the replacement if the existing
Greystone WWTP.
Although the Greystone WWTP has a good overall history of compliance
with permit limits and requirements, the existing plant is admittedly old and
deteriorating. The original construction is somewhat unusual and the
majority of the components are considered to be near the end of their
reliable service life.
laft*� Hence, AquaSource has commissioned this investigation to develop a
preliminary design for replacing and upgrading the existing facilities to
insure continued compliance and uninterrupted service to the community.
1.02 Scope:
The scope of this project is limited to the investigation and evaluation of
alternatives for replacing the existing wastewater treatment facilities that
serve Greystone. This investigation and report have been conducted in
accordance with NCAC Title 15A, 2H .0105(c).
Although this project is not for the creation of a new or expanding
wastewater treatment system, the investigation includes consideration of
alternatives to discharge as well as to the improvement of existing
facilities.

Section 2: Background Information
2.01 Project Area:
The existing service area is limited to the Greystone Subdivision which
has approximately 72 homes served by the sewer system. No expansion
of the service area is proposed.
All homes are single family residences.
2.02 Site Characteristics:
The subdivision is located in a rural portion of Forsyth county.
The general area was originally determined to have soil characteristics
which limited the possibility of on site treatment and disposal. Hence, the
development was built with a centralized sewer collection treatment for
treatment and discharge in accordance with the NPDES permit.
Terrain is generally rolling but has been graded level at the existing
WWTP site.
Section 3: Existing Utilities
3.01 Public Facilities:
The location of nearest public sewer was obtained from the Forsyth county
Department of engineering and is shown on a map in Appendix A. There
are no plans for extension of service into any reasonable proximity.
As can be seen from this map, the distance to reach existing public
sewers is prohibitive and would be approximately 2.7 miles of rolling
terrain.
3.02 Private Facilities:
There are no known existing private sewer utilities within any reasonable
proximity and/or within several miles of Greystone.
Section 4: Alternatives For Service
Based on operating data accumulated over the last eighteen (18) months
(see Appendix D), it us proposed to reduce the design flow rate from the
current NPDES limit of 40,000 gpd to 32,000 gpd. This will still allow for a

more than reasonable allowance for the limited growth potential that exists
and for intermittent fluctuations in flow rates.
4.01: On site surface and/or subsurface disposal:
As noted earlier, the area was originally determined to have limited
potential for on site subsurface disposal and was developed with a
centralized sewer collection system and centralized wastewater
treatment system (See attached letters denying approval for septic
tank systems in Appendix C.) Abandonment of the existing
centralized concept and reliance upon individual on site disposal is
obviously not a reasonable option.
The only possible alternative for on site disposal, either by
subsurface or surface application, would require the acquisition of
off site properties for disposal. The alternative of surface disposal
would require centralized treatment prior to disposal.
The degree of treatment required for surface application would be
virtually the same as required for treatment and discharge.
Although the additional cost of conveyance and the additional costs
for on site disposal should readily be recognized as a significant
cost increase as compared to the alternative of improving/replacing
the existing WWTP, an estimate of the costs for this alternative is
included in Appendix B for comparison.
The evaluation is based on a very conservative assumption that the
nearest available lands that could be reasonably used would
actually be available. A comparison of the costs were made first,
using the best (lowest cost) reasonable assumptions. It would
obviously be necessary to perform a more detailed site
investigation and ascertain if the property owner would consider
allowing these lands to be acquired for this purpose.
Operation and maintenance costs have been used that reflect the
approximate customer service charges now in effect and allowed to
be collected by the Utilities Commission. This is a conservative
approach that assumes no increase in service charges to the
customers even though there would clearly be additional costs to
AquaSource to operate and maintain the additional facilities.
4.02: Wastewater Reuse
Options for reuse of wastewater for this area are essentially nil.
Reuse is usually associated with non -potable uses such as

irrigation. This becomes potentially more viable if there is a need or
outlet for reuse such as irrigation of a golf course.
This area does not have a golf course nor are there any other
viable options for reuse associated with the subdivision or in the
surrounding area.
4.03: Surface Water Discharge
This is the current method of wastewater treatment/disposal. The
intentions are to replace the existing facilities due to their age and
deterioration. There is sufficient room available on the existing
deeded WWTP lot to allow for construction of the proposed
replacement facilities without interrupting the existing facilities.
Therefore, current operations should continue and the transition
can be made to the new facilities with very little disruption in current
treatment processes.
The existing post aeration, chlorine disinfection and effluent flow
measurement facilities will continue to be used since they are in
sound condition and are working well. Although the WWTP is
generally compliant with permit effluent limits, the other
components of this existing facility will be replaced due to their
obsolescence.
At present, influent comes in by gravity to the existing WWTP and
is divided to the components that are installed in the ground. The
replacement facilities are intended to be installed above ground,
which will necessitate the installation of an influent lift station.
Whereas all flow into the wastewater treatment plant will now be
conveyed by the proposed influent pump station, all flow into and
out of the plant will stop very shortly after any interruption in power.
Therefore, there should be no adverse consequences from any
short term power failure. The existing facilities have no standby or
auxillary power source. There have been no known significant
problems experienced within the past five (5) years that were
associated with an interruption of power. Power outages have been
infrequent and are generally less than thirty (30) minutes.
Because of the reasons explained above, and whereas the
discharge is into Class C waters, it is considered that the proposed
replacement facilities demonstrate adequate electrical reliability and
hence, no permanent standby generator is proposed. AquaSource
maintains mobile standby generators up to 100 KW in size at its

Concord, N.C. headquarters that can be utilized in the unlikely
event that a prolonged power outage is experienced.
The proposed new facilities will include flow equalization and
additional aeration and detention (30 hour) to insure compliance
with NH3-N and BOD limits.
An estimate of the costs for this alternative is included in Appendix
B for comparison.
Operation and maintenance costs have been used that reflect the
approximate customer service charges now in effect and allowed to
be collected by the Utilities Commission.
Section 5: Summary and Conclusions:
As can be seen from a comparison of the net present value of the various
alternatives, there is a wide difference between the cost estimate of the
option of continuing discharge and options to eliminate the discharge.
Compared to the cost of the next most cost effective and reliable
alternative (connection to the nearest municipal sewer system), the
estimated Net Present Value is approximately 160 % greater. This
represents a difference of $ 4,065 NPV per connection. This would clearly
represent a significant and unnecessary financial obstacle to the residents
in the development.
In light of the financial impracticality, it is not necessary to further pursue
whether connection is politically acceptable to the POTW.
The most practical and cost effective alternative is the continued
discharge with the replacement of the old and deteriorating facilities.
Section 6: Proposed Wastewater Treatment Facilities:
Based on the findings of the wastewater treatment/disposal alternatives
evaluation, it has been concluded that the practical alternative is to
replace the existing wastewater treatment facilities. Past performance of
the existing facilities, and upgrading by replacement of deteriorating
facilities should be expected to allow continued discharge to the receiving
waters in compliance with state requirements to protect the water quality.

See Appendix E Preliminary Engineering Design, for a detailed
description of the preliminary design. This proposed design would involve
the purchase and installation of dual package extended aeration plants
(including aeration basins, clarifiers, blowers, controls, etc.), the
refurbishment and installation of flow equalization and digestor
components that are an existing piece of equipment already owned by
AquaSource and in storage off site and the installation of an influent lift
station, equalization pumps, controls, etc. as necessary to complete the
proposed facilities as described in Appendix E.

Appendix A
Location of Nearest Public Sewer

r__:_a awn wirr�
AquaSource, Inc. Horizon Engineering & Consulting, Inc.
Greystone Subdivision WWTP 107 Commercial Park Drive
Location of Possible Route for Force Main to Connect to Nearest Concord, N.C. 28027 August 14, 2001
Public Sewer (Town of Kernersville) Scale: 1" = 1503 '

6
HUU 1•e • 01 UV : 1b f-K U i Y OF W-S HUBL 1 C: WKSJJb 727 2361 TO 917047886006 P. 01i02
1
City of Winston-Salem, NC
F-AX Transmittal,
Enneerin� Division
100 East First Street - Suite 235, City Hall
P.O. Box 2511 - Winston-Salem, NC 27102
Telephone: [phone] - Fax: [phone]
TO0
*
Name. 7 r ,n0
Fax #: :Zb!k -79 9 - t 0 �jo Phone#:
Subject:
FROM:
Nance: Ronnie Vernon
Phone #: [phone]
CONfAENTS.6
Daw:_9/1 7
Pages:. , including this
cover sheet

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** TOTRL PRGE.02 **

r^1
Appendix B
Cost Analysis of Alternatives
Note: Cost estimates based on, National Construction Estimator, Means Building Construction
Cost Data, consultation with contractors and the engineers experience.

Alternative A: Connection to POTW Sewer System:
Capital Cost:
Item:
Quanti : Unit Cost:
3" force main sewer
Pump Station
(56 gpm @ 320' TDH)
Manholes (Air Release)
Road Crossings
Driveway Crossings
Creek Crossings
Tie to exist. MH
Erosion Control
Easements/Right of way
Surveying
Engineering
14,300 LF $ 9
1 Ea $ 75,000
Cost:
$ 128,700
$ 75,000
5 Ea
$ 2,500
$
10,000
8 Ea
$ 7,000
$
56,000
70 Ea
$ 1,000
$
70,000
2 Ea
$ 15,000
$
30,000
1 Ea
$ 3,000
$
3,000
LS
$ 5,000
$
5,000
1,500 LF
$ 3
$
4,500
10 days
$ 1,500
$
15,000
10 %
$
39,720
Total Cost = $ 451,920
Operation & Maintenance Cost (Present Value, 20 year life, 8% interest):
Annual Cost
Pump Station/Force Main/Gravity Sewer O&M
Sewer Fees ($ 35/mo./user X 72 users X 12 mo/yr)
Total Annual Cost =
PV Annual Cost =
Total Net Present Value =
Alternative B. Land Based Disposal:
B1. Subsurface Disposal:
15,000
30,240
li—
$35, 40 TTD
$3451986 '45o,
$ 797-jM k�OZ) b4-0
Based on the limited soil information as evidenced by the appended letters
noting disposal limitations and the engineers field observations, the soils
in this area appear to be severely limited as a medium for subsurface
disposal. In the event that it was found to be apparently a cost effective

alternative, an in depth site specific soil investigation would need to be
done to confirm that the soils could in fact be used. However, for the
purpose of comparing the potential alternatives within the scope of this
evaluation, it will be assumed that a typical low design loading rate would
be workable. Therefore, it will be assumed that a loading rate of 0.10
gpd/sq. ft. is acceptable.
Therefore, based on the design flow, the area required for subsurface
disposal is: 32,000 gpd / 0.10 gpd/sq. ft. = 320,000 SF
Whereas it is required to maintain an equal size area as a reserve for
future repair, the required area is 640,000 SF. Assuming a loss of
approximately 20% useable land due to requirements for buffers to
property lines, wells, streams, etc. the estimated land required is 768,000
SF or 17.6 acres.
Capital Cost:
Item:
Quantity:
Unit Cost:
Cost:
4" sewer drain in 3' trenches 106,600 LF
$ 7.00
$
746,200
Site Clearing
9 acres
$ 6,500
$
58,500
Septic tanks
72 ea
$ 1,500
$
108,000
Land
17.6 acres
$ 15,000
$
264,000
3" FM
1900 LF
$ 9
$
17,100
Easements/Right of way
500 LF
$ 3
$
1,500
Manholes
1 Ea
$ 1,600
$
1,600
Pump Station
1 Ea
$ 20,000
$
20,000
Surveying
5 days
$ 1,500
$
7,500
Soils Investigation
20 hrs.
$ 70.00
$
14,000
Engineering
10 %
$
114,610
Total Cost
=
$ 1,361,080
Operation & Maintenance Cost
(Present Value, 20 year life, 8% interest):
Operation & Maintenance
Septic tanks = $ 100 each/year x 72 = $ 7,200
Pump Station and drain field operation and =
maintenance = $ 700/month x 12 = $ 8,400
Total Annual Cost = $ 15,600

PV Annual Cost = $ 153,161
Total Net Present Value=
132. Surface Irrigation:
$ 1,5149241
Surface irrigation preliminary design is based on an assumed allowable
application rate of 0.20 gpd/sq. ft. and a required storage basin for 45 days
design flow. Based on the design flow of 32,000 gpd, this results in an estimated
disposal area of 160,000 SF. Allowing a recommended 50% repair area, the
required total area is 240,000 SF. To allow for buffers to property lines,
highways, holding basin, etc. it will be assumed that the actual area required
should be increased 25 %. Therefore an area of 300,000 SF or 7 acres would be
required for surface irrigation. The estimate includes the cost of continuing to
provide secondary pretreatment, storage and disinfection.
Capital Cost:
Item: Quantity: Unit Cost: Cost:
1,440,000 gal. Storage basin
Secondary Pretreatment
Surface irrigation system 160,000 SF
Monitoring wells
Land (includes 2 acres for
storage basin)
Site Work and Erosion Control
Access Road
Fencing
3" FM
Easements/Right of way
Manholes
Pump Station
Surveying
Soils Investigation
Engineering
4 ea
9 acres
LS
LS
2,400 LF
1,900 LF
500 LF
1 Ea
2 Ea
5 days
80 hrs.
10%
(1)
$
165,500
(2)
$
94,436
$ 0.25
$
40,000
$ 3,000
$
12,000
$ 15,000
$
135,000
$ 10,000
$ 3,000
$ 5.50
$ 9
$ 3
$ 1,600
$ 20,000
$ 1,500
$ 70
Total Cost =
(1) Storage basin:
Excavation 9,000 cu. Yds. @ $ 5.00/yd = $ 45,000
Lining 40,000 SF @ $ 1.75/SF = $ 70,000
Aeration = $ 40,000
10,000
3,000
13,200
17,100
1,500
1,600
40,000
7,500
5,600
54,084
600,520

Electrical = $101000
(2) The estimated cost to provide secondary pretreatment is conservatively
assumed to be 50 % of the estimated cost derived for the surface water
discharge option (See D. below.) This is an approximate estimate based on
consideration that flow equalization could be deleted and the detention time
could be reduced from 30 hours to 24 hours since nitrogen removal would not
be necessary.
Operation & Maintenance Cost
(Present Value, 20 year life, 8% interest):
Annual Cost
Operation & Maintenance
($35/mo./connect. X 72 connect. X 12 mo/yr)
Total Annual Cost = $ 30,240
PV Annual Cost = $ 296,896
Total Net Present Value=
C. Wastewater Reuse:
No cost estimate. Not a viable option for this location.
D. Surface Water Discharge:
$ 30,240
$897,416
See Appendix E Preliminary Engineering Design, for a detailed description of
the preliminary design. The cost estimates below are a budgetary estimate
provided by a contractor who would provide the central portion of the proposed
wastewater treatment system (the dual package extended aeration plants,
including aeration basins, clarifiers, blowers, controls, etc.) This includes the
contractor's budgetary estimate of the costs to refurbish and install the flow
equalization and digestor components that are an existing piece of equipment
already owned by AquaSource and in storage off site. This includes the
contractor's budgetary estimate of the costs to provide and install all remaining
elements of the proposed facilities as described in Appendix E.

,?001►
Capital Cost:
Item: Quanti
Electrical
1
Blowers
3
Fencing
1
Handrail & grating
1
Lift Station
1
Concrete foundation
64.8 CY
Transportation/delivery
1
Sandblasting & painting
1
Dual Package Extended
1
Aeration WWTPs
Crane (lifting and
1
placement)
Labor
1
Engineering 10 %
Unit Cost: Cost:
LS
$ 5,000.00
LS
5,000.00
LS
4,500.00
LS
15,000.00
LS
15,000.00
$ 250.00
16,203.00
LS
69000.00
LS
15,000.00
LS
45,000.00
LS 5,000.00
LS 40,000.00
Sub total = $ 171,703.00
Contingencies (10%) 17,170.00
Subtotal = $188,873.00
18, 887.00
Total Cost = $ 207, 760.00
Operation & Maintenance Cost
(Present Value, 20 year life, 8% interest):
Annual Cost
Operation & Maintenance $ 30,240
($35/mo./connect. X 72 connect. X 12 mo/yr)
Total Annual Cost = $ 30,240
PV Annual Cost = $ 2969896
Total Net Present Value = $ 504,556.00

Appendix C
Letters Reference Septic Tank Disposal
w

HEALTH DEPARTMENT
Dr. Thomas R. Dundon
Director
December 19, 1979
City -County Planning Board
P. 0. Box 2511
Winston-Salem, NC
Gentlemen:
FORSYTH COUNTY
BOARD OF HEALTH
R.L. Smith, M.D.
Chairman
James J. Booker
Johnnye H.Hooper
Mary Keith
John E. Lynch
J. Harry Spillman, D.D.S.
Bess Warren
James A. Way, Jr.
James N. Ziglar, Jr., D.D.S.
Graystone Forest, sections three and four on Vance Road in Forsyth County
was inspected for the installation and maintenance of septic tank system.
In section three, lot numbers 54 thru 92 and 94-101 is disapproved. Lot
numbers 93, 102 and 103 are approved for septic tank systems.
In section four lot numbers 104 thru 131 is disapproved.
If this office can be of further assistance, please advise.
JKR:sb
/\
Sincerely,
DIVISION OF ENVIR NTAL H
James K. Robinson,Jr.
Public Health Sanitarian
P.O. Box 2975 • 741 Highland Avenue • Winston-Salem, North Carolina 27102

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HEALTH DEPARTMENT
Dr. Thomas R. Dundon
Director
FORSYTH COUNTY
July 12, 1983
City -County Planning Board
Post Office Box 2511
Winston Salem, NC
Gentlemen: da— ? 70,SY,
In Greystone Forest, section three, tax lot #61, tax block #5420, on
Horsemen's Cove is inspected and approved for the installation and
maintenance of a septic tank system with a forty -foot front building
line.
The above statement is to correct a mistake made on the original
approval to the planning board. (December 19, 1979).
If this office can be of further assistance, please advise.
Sincerely,
DIV SION OF ENVI ALTH
3mes K. Robinson, Jr. A.
/Public Health Sanitarian
JKR/rrp
cc: Mr. Leopoldo B. Eguren
7317 Horsemen's Cove
Kernersville, NC 27284
P.O. Box 2975 • 741 Highland Avenue • Winston-Salem, North Carolina 27102

HEALTH DEPARTMENT
Dr. Thomas R. Dundon
Director
November 30, 1978
City -County Planning Board
P. O. Box 2511
Winston-Salem, N. C. 27101
Gentlemen:
FORSYTH COUNTY
BOARD OF HEALTH
R.L. Smith, M.D.
Chairman
James J. Booker
Johnnye H.Hooper
Mary Keith
John E. Lynch
J. Harry Spillman, D.D.S.
Bess Warren
James A. Way, Jr.
James N. Ziglar, Jr., D.D.S.
Graystone Forest, Section two has been inspected for the installation
and maintenance of septic tank systems. The following lots are approved
with the corresponding building lines:
Building Lines Unapproved
40' 75' 100,
18-22
Lots #35 23 45
39 - 43 25 - 34 24
44 36 - 38
47 46
51 - 53 48
Lot numbers forty-nine and fifty are reserved as well lots for the
development's community water system.
If this office can be of further service, please call.
JKR:wb
/ORWA
Sincerely,
DIVISION OF ENVIRONMENTAL HIZI
,James K. Robinson, Jr. / L
Public Health Sanitarian
P.O. Box 2975 • 741 Highland Avenue • Winston-Salem, North Carolina 27105

/'\
r1
HEALTH DEPARTMENT
Dr. Thomas R. Dundon
Director
September 7, 1978
City -County Planning Board
P. O. Box 2511
Winston-Salem, N. C. 27101
Gentlemen:
�r=m
FORSYTH COUNTY
BOARD OF HEALTH
R.L. Smith, M.D.
Chairman
James J. Booker
Johnnye H. Hooper
Mary Keith
John E. Lynch
J. Harry Spillman, D.D.S.
Bess Warren
James A. Way, Jr.
James N. Ziglar, Jr., D.D.S.
Graystone Forest, Section I, has been inspected for the installation and
maintenance of septic tank systems. The following lot numbers are approved
with a forty foot building line: 4 - 7, 11 - 17. The following lot numbers
are not approved due to poor soil conditions:i,2, 3, and 8 - 10.
If this office can be of further assistance, please call.
Sincerely,
DIVISION OF ENVIRONMENTAL HEALTH
„James K. Robinson, Jr.
P.O. Box 2975 • 741 Highland Avenue • Winston-Salem, North Carolina 27105

Appendix D
Summary of Effluent Flow Rates

A
/dO*
Greystone Forest Subdivision WWTP
Summary of Effluent Flow
History
Month
Year
Average Daily Flow
Maximum Daily Flow
(MGD)
(MGD)
January
2000
0.007
0.017
February
2000
0.009
0.016
March
2000
0.010
0.019
April
2000
ff.0
0.040
May
2000
0.022
June
2000
0.018
0.026
July
2000
0.010
0.017
August
2000
0.016
0.032
September
2000
0.017
0.053
October
2000
" 0.020
0.053
November
2000
0.016
0.024
December
2000
0.007
0.017
January
2001
0.007
0.011
February
2001
0.005
March
2001
0.010
CO7.066
April
2001
0.010
May
2001
0.009
0.013
Current Permit Limit
0.040
No Limit
Highest Result
0.020
0 p,0 (0�
Proposed Requested
0.032
No Limit
Permit Limit

Appendix E
Preliminary Engineering Design
Selected Alternative
Replacement and Improvement of Existing
Wastewater Treatment Facilities

19
A.
B.
C.
D.
'00%,
Greystone Forest Subdivision WWTP
Basis of Design
Development Description:
Service Area
Greystone Forrest Subdivision
Location
North of Kernersville
Forsyth County, North Carolina
Type of Useage
Single Family Residential
Type of Waste
100% Domestic
Status
Existing Development
Existing Wastewater Treatment:
Type
NPDES No.
Receiving Stream
River Basin
Stream Classification
Owner
Permit Expiration
0.040 MGD Activated Sludge WWTP
N00078115
Belews Creek
Roanoke
C
AquaSource, Inc.
January 31, 2002
Anticipated Wastewater Characteristics
Type of Waste
100% Domestic
Constituents
BOD
200-250 mg/l
TSS
200 mg/1
NH3 N
25 ing/1
COD
500 mg/l
Number of Residences
72 Existing
Design Flow
32,000 gpd (based on operating history, see attached summary
of results)
Required Effluent Limits (Existing Permit)
Mon. Avg. Daily Max.
April 1- Oct. 31
BOD
23.0 mg/l 34.5 mg/l
TSS
30.0 mg/l 45.0 mg/1
NH3-N
2.0 mg/l NA
Fecal Coliform 200/100 ml 400/100 ml
PH
6-9 s.u.
D.O.
5.0 mg/l (min.)
Mon. Avg. Daily Max.
Nov.1— March 31
23.0 mg/1 34.5mg/1
30.0 mg/l 45.0 mg/l
4.0 mg/l NA
200/100 ml 400/100 ml
6-9 s.u.
5.0 mg/1(min.)

E. Proposed Treatment Process Components
Preliminary Treatment Influent lift station
Rough screening
Flow equalization
Flow splitting (between dual train plants)
Secondary Treatment Dual extended aeration basins with min. 32 hour
detention for nitrification
Dual clarifiers
Sludge return
Disinfection Existing tablet chlorinator and contact chamber
Sludge Treatment Aerobic digestion
Sludge Disposal Existing periodic removal and disposal by licensed waste
disposal company for disposal at municipal wastewater
treatment plant.
F. Proposed WWTP Component Design
1. Influent lift station
Avg. flow = 32.000) gp
d —
Peak flow = 2.5 x 22.2 em =
22.2 gpm
55.5 gpm
Pump Design ti")
Use 3" Sch. 40 PVC, approx. 100 LF
FH@56gpm = 0.83 ft
SH = 22 ft (approx.)
Use TDH = 22.8 ft.
Use dual Myers WHR10-DS, 1 HP, solids handling pumps (rated at 29 ft. TDH
at 56 gpm) or approved equal
2. Rough Screening
Type
Screening area
Peak flow rate
Manual inclined
56 gpm
3. Flow Equalization Aerated, variable level
Min. 25% Of design flow V of "..'u-
r6,3
w l 4urt
a. 0QerA0,A xS bac1� �v e�ua?'r.

a r
Design Volume 50% of design flow = .50 x 32,000 gpd=16,000 gal.
Pumps
Number Two (2)
Capacity 22 gpm @ 15 ft TDH (approx.), use Myers WHR5-DS, Y2
HP, solids handling pump (rated at 22 ft TDH @ 22 gpm)
or approved equal.
Controls Level activated, alternating pumps, dual pump run on
high level demand, low level cut off, audible and visual
alarms.
4. Biological Treatment
Type
Aeration Tanks
Number
Volume
Freeboard (min.)
Air supplied
Blowers
A"°\ Type
Number
5. Sludge Holding Tank
Number
Volume
T
ded Aerationur detention
Two (2) (Parallel package WWTPs)
20,000 gallons each, 40,000 gpd total
12 inches
(See Air Requirement)
Positive Displacement or approved equal
Four (4), (two each per aeration basin)
one
1 CF/population equivalent
= 1 CF x 32,000 gpd
100 gpd/capita
= 320 CF (min.)
Volume to be provided
= 500 CF VZ '[PE
oY, �,�- st"'O3e- 3a-0-1 �Q
PIrA 4r 61p,'

Air Requirements
A. Estimated BOD = GPD x mVA x 8.33
120002000
32,000 gpd x 250 mgd x 8.33
120002000
= 66.6 lbs./day BOD
B. Estimated NH3 N = GPD x m x 8.33
1,000,000
= 32,000 gpd x 25 mg/1 x 8.33
19000,000
= 6.7 lbs./day NH3 N
C. Air needed for BOD and NH3-N removal
BOD = *2,100 CF/lb BOD x 66.6 lb. BOD/day
1,440 min./day
97.1 CFM
NH3 N = *6,500 CF/lb NH3 x 6.7 lb. NH3/day
1,440 min./day
30.2 CFM
Total required for BOD and NH3 N = 127.3 CFM
* 1.5 lb. 02/lb. BOD + 4.6 lb. 02/ lb. NH3-N
Check: Use 3,000 CF/lb BOD removed
= 3,000 CF/lb BOD x 66.6 lb BOD/day
1,440 min./day
— 138.8 cfin
Use 138.8 cfin for BOD and NH3-N Removal

/&"I%1
D. Air needed for mixing
= 25 CFW 1000 CF aeration tank volume
= 25 CFM x 40,000 gal.
1,000 CF x 7.48 gal/CF
134 CFM
E. Air needed for sludge holding tank
= 20 CFM/1000 CF volume
20 CFM x 500 CF
1000 CF
10 CFM
F. Air needed for flow equalization
= 20 CFM/1000 CF volume
20 CFM x 20,000 gal.
1,000 CF x 7.48 gal/CF
— 53.5 CFM
G. Post Aeration
20 CFM/1000 CF volume
= 20 CF x 400 CF
1,000 CF
— 8 CFM
H. Air Lifts = 10 CFM/Lift
= 10 CFM/Lift x 4 lifts
= 40 CFM
H. Total Air Requirements — 250.3 CFM
IS

1p
(--Use three (3) blowers (one per plant, one back up) each with minimum �``
capacity to deliver 85 CFM
6. Clarification:
Type
Number
Dimensions (each)
Surface
Volume
Freeboard
Surface Settling
Detention
Weir Overflow Rate
Sludge Return
Scum Removal
7. Chlorination
Rectangular, hopper bottom
Two (2), one each per package plant
6 ft. x l l ft. = 66 SF
3,400 gallons
12 inches (min.)
242 gpd/SF @ average flow d �L
4.7 hrs @ average flow
727 GPD/LF s��7
Air lift
Air lift
Use existing tablet chlorinator
and contact chamber
Dimensions
8. Effluent Flow Measurement
Use existing 45 degree V-notch weir with ISCO bubbler flow meter/recorder
?0'`�

a
Exist
Discharge
Exist
Cl2 Exist I
Contact Grease
Exist Trap
Aerated /
Cl2
Exist /
Junction I
Exist Exist. Exist /
Sludge Aeration Aeration
I1! Holding
t
l j
Exist Exist Exist Exist
IClarifier Clarifier Aeration Aeration
1 !
I
IProp Prop
Clarifier Aeration �1
` A
Prop
Flow
Equal.
LA Prop
Prop �J Prop
' Clarifier Aeration Sludge
Holding
Exist
Influent
MH & Prop
Lift Station
AquaSource, Inc. Horizon Engineering & Consulting, /nc.
Greystone Subdivision WWTP 107 Commercial Park Drive
Proposed Replacement WWTP Facilities Concord, N.C. 28027 August 14, 2001
Schematic Diagram Scale: NTS