WQ0033950_Regional Office Historical File Pre 2018

Nort
Carolina Depa
evenly Eaves Perdue
G
Mr. Len Witke, Director of Construction
Cabarrus County Board of Education
4401 Old Airport Road
Concord, NC 28025
NCDENR
ent of Environment and Natural Resources
ion of Water Quality
Coleen H. Sullins Dee Freeman
Director Secretary
February 2, 2010
Subject: Permit No. WQ0033950 Modification
A. T Allen Elementary School
Wastewater Collection System Extension
Cabarrus County, North Carolina
Dear Mr. Witke,
In accordance with your complete application received on January 5, 2010, we are forwarding
herewith Permit No. WQ0033950 dated February 2, 2010, to Cabarrus County Board of Education for
the construction and operation of the subject wastewater collection system extension. This permit shall
be effective from the date of issuance until rescinded and shall be subject to the conditions and
limitations as specified therein. This cover letter shall be considered a part of this permit and is
therefore incorporated therein by reference.
Please pay particular attention to Permit Condition 3 which requires that the wastewater
collection facilities be properly operated and maintained in accordance with 15A NCAC 2T _0403 or any
individual system -wide collection system permit issued to the Permittee.
Permitting of this project does not constitute an acceptance of any pad of the project that does
not meet 1) 15A NCAC 27; 2) the Division of Water Quality's (Division) Gravity Sewer Minimum Design
Criteria adopted February 12, 1996, as applicable; 3) and the Division's Minimum Design Criteria for
the Fast -Track Permitting of Pump Stations and Force Mains adopted June 1, 2000, as applicable,
unless specifically mentioned herein. Division approval is based on acceptance of the certification
provided by a North Carolina -licensed Professional Engineer in the application. It shall be the
Permittee's responsibility to ensure that the as -constructed project meets the appropriate design criteria
and rules. Failure to comply may result in penalties in accordance with North Carolina General Statute
§143-215.6A through §143-215.6C, construction of additional or replacement wastewater collection
facilities, and/or referral of the North Carolina -licensed Professional Engineer to the licensing board
de Regional Office
610 East Center Ave Suite 301 Mooresville, NC 28115
} 663-1699 e Fax` [phone] Customer Serw'ice: 1-877 623-6748

. �.
Nr �Vrke
Page
May Z0.2OOS
|naccordance with the provisions ofArticle 21 GfChapter 143.General Statutes nfNorth
Carolina as amended. and other applicable Laws, Rules, and Regu|abons, permission is hereby
granted for the construction and operation of approximately 18 linear feet of 8 inch gravity sewer, 4,963
linear feet of3-inchforce main, a 74 gallon per minute pump stations (with duplex purnpa, on -site
audible and visual high water alarm, and a permanent on -site generator with automatic transfer
awitch)and the discharge Of 12.36OgaUons per day ofdomestic vv�x�em/atorinto the City of Concord
and theVVSACC existing sewerage systems in conformity with 15A NCACZTthe Division's Gravity
Sewer Minimum Design Criteria adopted February 12. 1996. as applicable; the Oivisior/s 0ininnUm
Design Criteria for the Fast -Track Permitting Of Pump Stations and Force Mains adopted June 1. 2000,
an applicable, and other supporting data subsequently filed and approved by the Department Of
Environment and Natural Resources and considered a part of this permit.
The sewage and wastewater collected by this system shall be treated in the Rocky River
Wastewater Treatment Facility "/TP(NPDESMo,NC0036265) prior tobeing discharged 'into the
receiving Stream
Assessing subsequent impacts to the downstream collection system and treatment
facility isthe complete responsibility ofthe City ofConcord. City ofConcord must utilize
whatever tracking tools necessary for planning additions of sewer flow in order to maintain
compliance with the WVVTP permitted limits and the WQCS00326 permit requirements.
Assessing subsequent impacts to the downstream collection system and treatment
facility is the complete responsibility of WSACC. WSACC must utilize whatever tracking tools
necessary for planning additions ofsewer flow in order to maintain compliance with theWVVTP
permitted limits and the VVClS8OQO9permit requirements.
The Operational Agreement between the Permittee and the Environmental Management
Commission is incorporated herein by reference and shall be o condition of this permit. Noncompliance
with the terms ofthe Operational Agreement shall subject the Permitteetoall sanctions provided by
North Carolina General Statutes 143'215.8Ato 143'215,8C for violation nforfailure to act in
accordance with the terms and conditions ofthis permit,
If any partS, requirernents, or limitations contained in this permit are unaoceo1ab|o, you have the
right to request an adiuUicatory hearing upon written request within 30 days following receipt of this
permit. This request must be in the form of written petihon, conforming to Chapter 150B of North
Carolina General Statutes, and filed with the Office nfAdministrative Hearings, 6714Mai| Service
Center, Raleigh, NO 27688-6714 Unless such demands are made, this permit shall be final and
If you need additional information concerning this
663-1699
�n. p
ease contact Dee Browder at (704)
Sincerely,
<
o|eenH Sullins
co' Mooresville Regional Offioe, Collection System Permit Files
Gurfaoe\Vater Protection Central Files
PERCS

Fast Track, En rt rtelir
Voice moil messages or faxed information is permissible, but shall not be considered as the
initial verbal report. Overflows and spills occurring outside normal business hours may also be
reported to the Division of Emergency !Management eTent t telephone number (00) 8-0 8 or
(911 g) 733-3300 Persons reporting any of the above occurrences shall file a spill report by
completing Port I of Forrn CS-SSO (or the most current Division approved form(, within five days
following first knowledge of the occurrence. This report shad outline the actions taken or
proposed to ensure that the problem does not recur. Part II of Form SS-S Q (or the most current
Division approved form) can also be completed to show that the SSO was beyond control.
Per rrrit issued this the 2nd day of January, 1 g.
NORTH C AROLINA ENVIRONMENTAL MANAGE ENT CON1Ml SSI N
Coleen FI, Sullins, Dire or
Division of Water Quality
By Authory of the Environrn
Pit iN
entol
a ber WQ003950 Aledifict
anagernent Commission

Fast Track Eng sting Certifl tion

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
RALEIGH
WASTEWATER COLLECTION SYSTEM EXTENSION PERMIT
This permit shall be effective from the date of issuance until rescinded and shall be subject to the
following specified conditions and limitations:
1, This permit shall become voidable unless the wastewater collection facilities are constructed in
accordance with the conditions, of this permit; 15A NCAC 2T; the Division of Water Quality's
(Division) Gravity Sewer Minimum Design Criteria adopted February 12, 1996, as applicable; the
Division's Minimum Design Criteria for the Fast -Track Permitting of Pump Stations and Force
Mains adopted June 1, 2000, as applicable; and other supporting materials unless specifically
mentioned herein.
2. This permit shall be effective only with respect to the nature and volume of wastes described in the
application and other supporting data,
3. The wastewater collection facilities shall be properly maintained and operated at all times. The
Permittee shall maintain compliance with an individual system -wide collection system permit for the
operation and maintenance of these facilities as required by 15A NCAC 2T ,0403, If an individual
permit is not required, the following performance criteria shall be met as provided in 15A NCAC 2T
.0403:
a. The sewer system shall be effectively maintained and operated at all times, to prevent
discharge to land or surface waters, and any contravention of the groundwater standards in
15A NCAC 2L .0200 orthe surface water standards in 15A NCAC 2B .0200.
b. A map of the sewer system shall be developed and shall be actively maintained.
c. An operation and maintenance plan shall be developed and implemented
d. Purnp stations that are not connected to a telemetry system shall be inspected every day (i.e,
365 days per year). Pump stations that are connected to a telemetry system shall be
inspected at least once per week.
e. High -priority sewer lines shall be inspected at least once per every six-month period of time.
f. A general observation of the entire sewer system shall be conducted at least once per year,
g. Inspection and maintenance records shall be maintained for a period of at least three years.
h. Overflows and bypasses shall be reported to the appropriate Division regional office in
accordance with 15A NCAC 26 .0506(a), and public notice shall be provided as required by
North Carolina General Statute §143-215.1C,

Fast Track Engineering Certification
4 This permit shall not be transferable. In the event there is a desire for the wastewater collection
facilities to change ownership, or there is a name change of the Permittee, a formai permit request
shall be submitted to the Division accompaniedi by documentation from the parties involved, and
other supporting materials as may be app.ropriate. The approval of this request shall be considered
on its merits and may or may not be approved.
5. Construct on of the gravity sewers, pump stations, and force mains shall be scheduled so as not to
interrupt service by the existing utilities nor result in an overflovv c.r bypass discharge of wastewater
to the surface waters of the State
6 Per 15A NCAC 2T .0116, upon completion of construction and prior to operation of these
permitted facilities, the completed Engineering Certification form attached to this permit shall be
submitted with the required supporting documents to the address provided on the form. A complete
certification is one where the form is fully executed and the supporting documents are provided as
applicable.,
7, A copy of the construction record drawings shall be maintained on file by the Permittee for the life of
the wastewater collection ifacilities.
Failure to abide by the conditions and limitations contained in this permit; 15A NCAC 2T, the
Division's Gravity Sewer Design Criteria adopted February 12, 1996 as applicable, the Division's
Minimum Design Criteria for the Fast -Track Permitting of Pump Station and Force Mains adopted
June 1, 2000 as applicable; and other supporting materials may subject the Permittee to an
enforcement action by the Division, in accordance with North Carolina General Statutes §143-
215.6A through §143-215.6C.
9.. In the event that the wastewater collection facilities fail to perform satisfactorily, including the
creation of nuisance conditions, the Permittee shall take immediate corrective action, including
those as may be required by this Division, such as the construction of additional or replacement
facilities.,
10. The issuance of this permit shall not exempt the Permittee from complying with any and all statutes,
rules, regulations, or ordinances that may be imposed by other government agencies (local, state
and federal) which have jurisdiction, including but not limited to applicable river buffer rules in 15A
NCAC 2B 0200, erosion and sedimentation control requirements in 15A NCAC Chi. 4 and under the
Division's General Permit NCG010000, and any requirements pertaining to wetlands under 15A
NCAC 2B ,0200 and 15A NCAC 2H ,0500.
11, Noncompliance Notification:
The Permittee shall verbally report to a Division of Water Quality employee at the Mooresville
Regional Office, telephone number [phone], as soon as possible, but in no case more than
24 hours or on the next working day, following the occurrence or first knowledge of the occurrence
of either of the following,
a. Any process unit failure, due to known or unknown reasons, that renders the facility incapable of
adequate wastewater transport, such as mechanical or electrical failures of pumps, line
blockage or breakage, etc or
b_ Any failure of a pumping station or sewer line resulting in a by-pass directly to receiving waters
without treatment of all or any portion of the influent to such station or facility.

Fast Track Engineering Certification
Permit No. WQ0033950 Modification
February 2, 201Ci
Owner/WQCS
Len Witke, Dir. of Const,
Cabarrus County Board of Ed.
4401 Old Airport Road
Concord, NC 28025
VvVIT PiWQCS
Thomas Bach
WSACC
PO Box 426
Concord, NC 28025
PE
Anthony B. Cowan
The Isaacs Group, P.C.
8720 Red Oak Blvd., Ste 420
Charlotte, NC 28217
City of Concord
Mark Fowler
City of Concord
PO Box 308
Concord, NC 28028
Complete and submit UT:is form to the permit issuing regional office with the fallowing'
• One copy of the project record drawings (plan & profile views of sewer lines) of the wastewater collection
system extension
• Supporting design calculations (selected pumps, system curve, operating point, available storage if portable
generator(s) or storage greater than longest past three year outage reliabty option selected) for any pump
stations permitted as part of this project
• Changes to the project should be clearly identified on the record drawings or summary form. Permi
modifications ar,e required for any changes resulting in non-compliance with thspermrt regulations or
minimum design criteria
This project shall not be considered complete nor allowed to operate until this Engineer's Certification and al
required supporting documentation have been received by the Division. Therefore,. it is highly recommended
that this certification be sent in a manner that provides proof of receipt by the Division.
ENGINEER'S CERTIFICATION
E Partial El Final
as a duly registeredProfessional Engineer in the State of North Carolina, having been
authorized to observe periodically, D weekly,D full time) the construction of AT Allen Elementary School an
Cabarrus County project, for the Permitted, hereby state that, to the best of my abilities, due care and diliigence, was
used in the observation of the construction such that the construction was observed to be built within substantial
compliance of this permit, 15A NCAC 2T, the Division' of Water Quality's (Division) Gravity Sewer Minimum Design
Criteria adopted February 12, 1996 as a.pclicatcle; the Division's Minimum Design Criteria for the Fast -Track Permitting
of Pump Stations and Force Mains adopted June 1, 2000 as applicable; and other supporting materials,
North Carolina Professional Engineers
seat, signature, and date:
SEND THIS FORM & SUPPORTING DOCUMENTATION
WITH REQUIRED ATTACHMENTS TO THE FOLLOWING ADDRESS
MOORESVILLE REGIONAL OFFICE
SURFACE WATER PROTECTION
610 EAST CENTER AVENUE, SUITE 301
MOORESVILLE NC 28115
The Permittee is responsible for tracking all partial certifications up until a final certification is received, Any
wastewater flow made tributary to the wastewater collection System extension prior to completion of this Engineer's
Certification shall be considered a violation of the permit and shall subject the Permittee to appropriate
enforcement actions,

USE THE TAB KEY TO MOVE FROM FIELD TO FIELD!
Owner/Permittee:
Cabarrus County Board of Education
Full Legal Name (company, municipality„ HOA, utility, etc.)
b. Len Witke, Director of Construction
Application Numb
(to be completed by DWQ)
Signing Official Name and Title (Please review 15A NCAC 2T .0106 (b)
1c, The legal entity who will own this system is:
Individual ❑ Federal ❑ Municipality ❑ State/County ❑ Private Partnership Corporation ❑j Other (specify):
1d, 4401 Old Airport Road 1e. Concord
Mailing Address
NC
State
0 l h. [phone] 1 i, (704
0
or authorized signing o
City
1 g. 28025
Zip Code
262-6244 1 j. len.witke@cabarrus.k
Telephone Facsimile E-mail
2. Project (Facility) Information:
ry 2a. A.T. Allen Elements School 2babar'rus. C
County Where Project is
2.nc,u
Brief Project Name (permit will refer to this name)
3, Contact Person:
3a, Anthony B. Cowan, P.E. (Senior Project Manager with The Isaacs Group)
Name and Affiliation of Someone Who Can Answer Questions About this Application
3b, [phone]
Phone Number
1. Project is ❑ New Modificatio
ocated
3c. [e-mail]
E-mail
ng permit) If Modification, Permit No.: WQ00339
0
2. Owner is ❑ Public (skip to Item B(3)) ® Private (go to Item 2(a))
2a. If private, applicant will be:
El Retaining Ownership (i.e. store, church, single office, etc.) or
0 Leasing units (lots, townhomes, etc. - skip to Item 8(3))
❑ Selling units (lots, townhomes, etc. - go to Item 8(2b))
City of Concord
2b. If sold, fac
0 Public Utility (Instruction C)
❑ Homeowner AssociDeveloper (Instruction D)
Owner of Wastewater Treatment Facility (WWTF) Treating Wastewater From This Project
4a. Rocky River Wastewater Treatment Facility 4b NC0036269
Name of WWTF WWTF Permit No.
5a. City of Concord 5b, 8" Gravity j5c. n/a
Force Main " Per
Owner of Downstream Sewer Receiving Sewer Size
6. The origin of this wastewater is (check all that apply):
Residential Subdivision
❑ Apartments/Condominiums
❑ Mobile Home Park.
School
0 Restaurant
O Office
of Downstre
Retail (Stores, shopping centers)
❑ Institution
❑ Hospital
0 Church
0 Nursing Home
Other (specify): 1-Residential Home
wer (Instruction E)
100 °/© Domestic/Commercial
% Industrial (attach
description.)
(RO: contact your Regional Office
Pretreatment staff)
% Other (specify):
Volume of wastewater to be allocated grpermitted for this particular project: 360 add' l pd (`Tctai=12,360)gallons per day
*Do not include future flows or previously permitted allocations
If the permitted flow is zero, indicate why:
• Pump Station, Outfall or Interceptor Line where flow will be permitted in subsequent permits that connect to this line
0 Flow has already been allocated in Permit No,
❑ Rehabilitation or replacement of existing sewer with no new flow expected (see 15A NCAC 02T .0303 to determine if a
permit is required)
FTA 12/07

9. Provide the wastewater flow calculations used in determining the permitted flow in accordance with 15A NCAC 2T ,0114 for'
the value in Item B(7) AND/OR the design flow for line or pump station sizing if a reduced or zero flow is being requested in
Item B(7). Values other than that in 15A NCAC 2T ,0114 (b) and (c) must be supported with actual water or wastewater use
data in accordance with 15A NCAC 2T .0114 (f).
Adding 360 gal/home x 1 = 360 gpd (Revised total of 12,360 gpd)
10. Summary of Sewer Lines to be Permitted (attach additional sheets if necessary)
11.
Size (inches) Length (feet)
3"
New Gravity or Additional
Force Main
Adding 33 LF (Revised total 4,963 If) Force Main
Summary of Pump Stations w/ associated Force Mains to be Permitted (attach additional sheets as necessary)
MI Pump Station Location ID Proposed Pump Station
0
0
Pump Station Location ID (self chosen - as shown on plans/map for reference)
(self chosen - as shown on plans/map for reference)
Design Flow Power Reliability Option
Operational Point
(MGD) 1 - permanent generator WATS;
GPM @TDH
2 - portable generator w/MTS
cy01239 44.7 gp @ 94.25 1
Force Main Size
Force Main Length
33' new (Tot.=4,963)
0
LL
Design Flow
(MGD)
Power Reliability Option
Operational Point GPM @TDH .
1 permanent generator w/ATS; Force Main Size Force Main Length
2 - portable generator w/MTS
Pump Station Location ID
CL
CO
Design Flow
(MGD)
(self chosen - as shown on plans/map for reference)
Power Reliability Option
Operational Point
GPM TDH
1 - permanent generator w/ATS; Force Main Size Force Main Length
@
2 - portable generator MINTS
12. Will the wastewater flow in the proposed sewer lines or pump stations be able to be directed to another treatment facility?
fl Yes No If Yes, permit number of 21° treatment facility
(RO — if "yes" to 0,12 please contact the Central Office PERCS Unit)
13. Does the sewer system comply with the Minimum Design Criteria for the Fast Track Permitting of Pump Stations and Force
Mains (latest version), the Gravity Sewer Minimum Design Criteria (latest version) and 15A NCAC Chapter 2T as
applicable?
Yes EI No If No, please reference the pertinent minimum design criteria or regulation and indicate why a
variance is requested. SUBMIT TWO COPIES OF PLANS, SPECIFICATIONS OR CALCULATIONS
PERTINENT TO THE VARIANCE WITH YOUR APPLICATION
FTA12,107

4. Have the following permits/certifications been submitted for approval for the system or project to be served?
Wetland/Stream Crossings - General Permit or 401Certification? El Yes 1:3 No Z N/A
Sedimentation and Erosion Control Plan? 1 Yes No El N/A
Stormwater? E Yes No Z N/A
15. Does this project include any high priority lines, [see 15A NCAC 02T ,0402 (2)] involve aerial lines, siphons, or interference
manholes)? These lines will be considered high priority and must be checked once every six months
Check if Yes: El and provide details
1 Owner/Permittee's Certification: (Signature of Signing Official and Project Name)
1, Len Witke , attest that this application for A.T. Allen Elementary School has been reviewed by
me 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 documentation and attachments are not included, this application
•
package is subject to being returned as incomplete. Note: In accordance with North Carolina General Statutes 143-
215.6A and 143-215,68, any person who knowingly makes any false statement, representation, or certification in any
application shall be guilty of a Class 2 misdemeanor, which may include a fine not to exceed S10,000 as well as civil
penalties up to 0 per violation.
// F ,
,
ping Official Signature
Date
ENGINEERING DESIGN DOCUMENTS MUST BE COMPLETED PRIOR TO SUBMITTAL OF THIS
APPLICATION, THESE DOCUMENTS MUST INCLUDE PLAN AND PROFILE OF SEWERS, THEIR PROXIMITY
TO OTHER UTILITIES, DESIGN CALCULATIONS. ETC. REFER TO 15A NCAC 02T .0305
2. Professional Engineer's Certification: (Signature of Design Engineer and Project Narne)
Anthony B. Cowan, P.E. attest that this application for A.T, Allen Elementary School has
LL been reviewed by me and is accurate, complete and consistent with the information in the engineering plans, calculations,
and all other supporting documentation to the best of my knowledge. I further attest that to the best of my knowledge the
proposed design has been prepared in accordance with the applicable regulations, Gravity Sewer Minimum Design Criteria
LLJ for Gravity Sewers adopted February 12, 1996, and the Minimum Design Criteria for the Fast -Track Permitting of Pump
L.) Stations and Force Mains adopted June 1, 2000 and the watershed classification in accordance with Division guidance.
Although other professionals may have developed certain portions of this submittal package, inclusion of these materials
O under my signature and seal signifies that I have reviewed this material and have judged it to be consistent with the
proposed design. Note: In accordance with NC General Statutes 143-215.6A and 143-215,66, any person who knowingly
makes any false statement, representation, or certification in any application shall be guilty of a Class 2 misdemeanor
which may include a fine not to exceed S10,000 as well as civil penalties up to $25,000 per violet On
2a, Anthony B. Cowan, P,E.
Professional Engineer Name
2b. The Isaacs Group, P.C.
Engineering Firm
2c. 8720 Red Oak Blvd., Suite 420
Mailing Address
2d, Charlotte 2e, NC 2f. 28217
City State Zip
2g. [phone] 2h. [phone] 2i, [e-mail]
iNEts\o-
B C
igf
Telephone Facsimile E-mail NC PE Seal, Signature & Date
FIA12:07

8 7.20 RED OAK
CFAsCHARL a TE, N
t\ E 7 4 527
TO NCDENR
610 East Center Avenue
Mooresville, NC 28115
LETTER OF TRANS
DATE 12/31/2009
JOB NUMBER 09178
ITTAL
ATTENTION:
RE:
AT Allen E
Dee Browder
entar5 School
Private Pump
ion Revisions
WE ARE SENDING YOU El Attached Li Under Separate cover via
Shop drawings L_ Prints
Copy of letter L Disk
L
Plans
[� Applications
the following items:
[_ Specifications
COPIES DATE
NO,
original FTA
Copy of FTA
Check for $480.00
Concord will serve letter
WSACC flo
THESE ARE TRANSMITTED as checked below:.
J Approved and submitted
Approved as noted
[] Returned for corrections
For approval
For your use
As requested
[ For review and comment
REMARKS
DESCRIPTION
eptance lette
j' Resubmit
i Submit
Retum
copies for approval
copies for distribution
corrected prints
Dee, The attached information has been submitted for an approval of a modification to perWZ0033950.
Please call me at 704-227-9402 should you have any questions or need any additional information.
COPY TO
SIGNED Brent Cowan

WATER & SEWER AUTHORITY
OF CABARRUS COUNTY
December 21., 2009
W. Brian Hiatt.
City Manager
City of Concord
P. O. Box 308
Concord, NC 28026-0308
rhsnn I^,
428
NC 28026-0428
Pone 704.7881783
Fax: [phone]
Subject: Flow Acceptance Request
A. T. Allen Elementary School Private Wastewater Extension Modification
Dear fr. Hiatt:
This is in response to the subject request for flow acceptance received December 16, 2009.
The Water and Sewer Authority of Cabarrus County (WSACC) has or currently expects to be able
to make available capacity at the Rocky River Regional Wastewater Treatment Plant and
appropriate sewer interceptors to transport and treat the domestic wastewater from the proposed A.
T. Allen .Elementary School Private Wastewater Extension Modification project located along
Miami Church Road just cast of the intersection with Highway 601. This project consists of the
addition of a single family residence onto the school's wastewater collection system via a private
pump station and force main.
As you noted in your request letter dated December 8, 2009, a flow acceptance letter for
12,000 gpd. was previously issued on March 23, 2009 for the A. T. Allen Elementary School Private
Wastewater Extension project that included an 88,000 square foot school complex with a 1,000
student population. By including the additional 360 gpd wastewater flow from the modification
project (Norris Barringer Private Single Family Pump Station); the total wastewater flow from the
A. T. Allen Elementary School Private 'iastewater Extension Modification project is 12,360 gpd.
The wastewater generated by this project will be conveyed through the City of Concord's
existing 8-inch gravity system, and then enter WSACC's system at the existing 42-inch Cold Water
Creek Interceptor just south of the crossing with Miami Church Road. WSACC agrees to accept the
additional wastewater from the proposed single family residence based on information provided by
The Isaacs Group (Civil Engineer for theproject) using North Carolina Department of Environment
and Natural Resources (NCDENR) wastewater flow guidelines. The additional projected flow is
360 gpd; however WSACC expects the actual wastewater flow to more closely approximate 250
gpd based upon Master flan engineering data.
By requesting flow acceptance, the City of Concord acknowicdges that WSACC may need
to upgrade, expand, or construct new facilities to accommodate the increased flow volume granted
by this and previous flow acceptance. Appropriate design and construction will be initiated when
actual flows dictate but may be subject to situations that WSACC does not expect or control. Based
upon flow of 360 gpd and cost of S8.126/gpd to provide treatment and transportation capacity, this
.flow acceptance represents an estimated capital expenditure in excess of S2,92 5.

City of Concord
A. T. Allen. Elementary School Private Wastewater Ext. Mod.
December 21, 2009
Page 2 of 2
For your information and based upon NCDENR wastewater :flow guidelines, WSACC has
approved 15,930,084 gallons of !low acceptance for the City of Concord from 1992 to present and
213,954 gallons of flow acceptance year-to-date including this request. Based upon the approved
flow acceptances, WSACC has committed. capacity valued in excess of $129,447,863 for th,c City of
Concord since 1992 including $1,738,590 for this calendar year.
Projects on the Capital improvement Program, (C1P) are subject to approval. by WSACC's
Board of Directors, support from local governing bodies, regulatory approval, and funding
availability. At this time there are no scheduled upgrades to WSACC facilities in the current six
year CIP that are located downstream of this proposed project. It should be noted that the list and
schedule of CIP projects are tentative and are revised periodically to reflect changing conditions and
needs.
If construction of this project is not started within two (2) years of the date of this approval,
the approval is rescinded and a second request and approval will be required. Please notify
WSACC, in writing, when construction of this project is initiated.
If you have any questions, please call me at [phone]..
Sincerely,.
iwki/f/
Thomas A. Bach, P.E.
Utility Systems Engineer
cc: WSACC Engineering Staff
Sherri 1'vloore/Concord
Anthony Cowan, P.E./The Isaacs Group

State of North Carolina
Department of Environment and Natural Resources
Division of Water Quality.
Flow Tracking/Acceptance for Sewer Extension Permit Applications
(FTSE —10/07)
(JURISDICTION USE ONLY)
Jurisdiction Requesting Flow Acceptance for Collection System:
City of Concord OCity of Kannapolis ['Town of Harrisburg DTown
DCharlotte Mecklenburg Utilities
Project Title, Description, and Number of Lots/Unit:
Project Titic.Rarringer Residence Private Pump Station & Force Main —Project 2
Description: The Barriner R&denee Private Purnp Station & Force Main
en&inerin pIa
specifications a, with The I collection
system extension consisting oLjjJni at 7083TDH 2-11:P_ 230 V-Single Phase Grinder Pump and werwell
mbl with a r x' t 4 o .5 inch_force main and other appurtenances to serve a single family
home located on Miairn Church Rd. wuh no increase to the wastewater dischame. The flow forthroectwilI be
allocated in A.T. Allen Elementary School Public Water $t Private Wastewater Extension . odIfIcatiou, under the
Ncticrm DWO t,W 3 difi . ' n . _
What is the quantity of flow that will ged GPD Flow to be allocated in the A.T. Allen
Elementary School Public Water & Private Wastewater Extension Modifleatioo, under the NCDENR DWQ
Fast Track permit, WQ 00,33950 modification.
Flow type:
Domestic 100 *0 ED Commercial E] Industrial
Section I - List the Jurisdiction's pump stations located between the project connection point and
the WSACC Interceptor connection point. (For each existing pump station to be impacted by this
proposed sewer extension project, list each pump station name, approximate pump station firm (design)
capacity and approximate current average flow (previous 12 months) for each pump station. Include the
proposed flow for this project and other flows that have been approved for the pump station but are not yet
tributary.)
Pump Station Name:
N/A
x, Capacity,
MGD
(-'imi/Design)
Approx. Current Avg.
Daily Flow, MGD
Section Jurisdiction's Certification Statement:
Sue Ilyde,Direetor of Engineering, certifythat, to the best of my knowledge, the addition of
the volume of wastewater to be permitted in this project has been evaluated along the route to the
receiving WSACC interceptor and that the flow from this project is not anticipated to cause any capacity
related sanitary sewer overflows or overburden any downstream pump station en route to the receiving
WSACC interceptor. This analysis has been preformed in accordance with local established policies and
procedures using the best available data. This certification applies to those items listed above in Section I
for which, to the best of my knowledge, will not adversely affect the downstream sewer capacity.
Signature of this form indicates acceptance of this wastewater flow.
,
jurisdiction's Signing Official Signature Date
Revisiot Du 02101'04

A
State of North Carolina
Department of ' on t and Natural Resources
, • 7 Division of Water Quality
Flow TraCking/Acceptance for Sewer Extension Permit Applications
(FTSE -10107)
(WSACC USE ONLY) Barringer Residence Private PS & FM Project
Section I. Name of wastewater treatment facility (WWTF) receiving wastewater:
Rocky River Wastewater Treatment Facility — Permit No: NC0036269
Muddy Creek Wastewater Treatment Facility — Permit No: NC0081621
WWTP facility's permitted flow, MGD
24.000
Estimated obligated flow not yet tributary to the WWTP, MGI) 1.796
WWTP facility's actual avg. daily flow, MGD 14„280 (59.5% of permit)
Total flow for this specific request, MGD
Total actual and obligated
Percent of permitted flow used
o the facility, MGD
0.000
16.076
67.0%
Section 11. Pump stations along the route from the Jurisdiction's connection point to the WWTP.
(For each existing pump station to he impacted by this proposed sewer extension project, list each pump
station name, approximate pump station firm (design) capacity and approximate current average flow
(previous 12 months) for each pump station. Include the proposed flow for this project and other flows that
have been approved for the pump station but are not yet tributary)
Pump Station Name:
RRRWWTP Main PS
Approx. Capacity, MGI) Approx. Current Avg,
(Firm/Design) Daily Flow, MGD
55.440 10.394
Section III., WSACC Certification at ent:
I, Thomas A. Bach, P.E. , certify that, to the best of my knowledge, the addition of
the volume of wastewater to be permitted in this project has been evaluated along the route from the
connection to the interceptor to the receiving wastewater treatment facility and that the flow front this
project is not anticipated to cause any capacity related sanitary sewer overflows or overburden any
downstream pump station en route to the receiving treatment plant. This analysis has been preformed in
accordance with local established policies and procedures using the best available data. This certification
applies to those items listed above in Section I and Section II for which, to the best of my knowledge, will
not adversely affect the downstream sewer eapaeity, Signature of this form indicates acceptance of this
was r
fTte,ti
TVSACC's Signing Official Signature
o2
'Revision Dale: 021031'04

85.) Warren C. Coieman181.,-(1., P.O. Box 308, ConcoFd, NC 28026 - www,ra.anancod.racx,i
December 22, 2009
Cabarrus County Board of Education
Mr. Len Wi:tke, Director ofConstruction
4401 Old Airport Road
Concord, NC 28025
SUBJECT: city of Concord 'Willingness to Serve
Private Wastewater Collection System Extension/Modification
City of Concord Project Title: A.T. Allen Elementary School Public Water & Private
Wastewater Extension .Modification
City of Concord Project #: 2009-010
Receipt Date: December 4, 2009 (Revised Drawings)
November 24, 2009 (Revised Application)
March 23, 2009 (WSACC Flow Acceptance)
Engineering Plan Seal Date: December 3, 2009
WSACC Rocky River 'WWTP NC0036269
City of -Concord, Cabarrus County, North Carolina
Dear Mr, Witke:
This letter is to confirm that on November 24, 2009, our office received the A.T. Allen
Elementary School Public Water & Private Wastewater Extension Modification engineering
plans and specifications, as prepared and sealed by Anthony B. Cowan, .NCPE, with The Isaacs.
Group, for a wastewater collection system modification consisting of an additional 33 linear feet
of 3-inch force main and other appurtenances that will serve the elementary school with a 1000
student population and the proposed private Norris Barringer Private Single Family Pump Station
that is located off Miami Church Road,with an additional wastewater discharge of 360 GPD.
The entire A.T. Allen Elementary School Public Water & Private Wastewater Extension
Modification engineering plans and specifications, as prepared and sealed by Anthony B.
Cowan, NCPE, with The Isaacs Group, shall consist of approximately 51 linear feet of 8-inch
gravity sewer main with 1 manhole, a 45 gpm @ 74.09 TDH duplex grinder pumps with wet
well, electrical panels, telemetry, alarms,. back-up power generator, and associated
appurtenances, 4,963 linear feet of 3-inch force main and other appurtenances to serve 88,000
square foot elementary school with a 1000 student population and the proposed private Norris
Barringer Private Single -Family Purnp Station located off Miami Church Road, with the
previously allocated commercial wastewater 12,000 gpd by the Water & Sewer Authority of
Cabarrus County on March 23, 2009, and the proposed domestic wastewater discharge of 360
gpd from the proposed Norris Barringer Private Single -Family Pump Station. Therefore, the
Engineering
Phone (704) 920,5425 • Fax [phone]

final commercial and domestic wastewater discharge for the AT Allen Elementary School Private
Putnp Station and 3-inch Force Main shall be 12,360 G.PD,
The City of Concord's public wastewater collection system has the capacity to accommodate thc.
estimated total average wastewater discharge based on the information indicated on the
NCDENR Fast Track applications for the project. The City of Concord, however, will not
guarantee the acceptance of any additional requests, revisions, deficiencies, or expansions that
were not included in the consulting engineer's submitted engineering plans, specifications,
reports, and/or calculations associated with this private system.
THE CITY OF CONCORD AND ITS STAFF ARE NOT RESPONSIBLE. FOR ERRORS IN DESIGNS,
CALCULATIONS, DRAWINGS OR STATEMENTS SUBMITTED BY APPLICANTS, THEIR
TECHNICAL CONSULTANTS, SURVEYORS OR ENGINEERS, THE CITY OF CONCORD AND ITS
STAFF ARE NOT RESPONSIBLE FOR FINDING OR CORRECTING ANY :ERRORS OR
DEFICIENCIES tN PLANS SUBMITTED TO THE CITY OF CONCORD FOR REVIEW AND
APPROVAL, THE CITY OF CONCORD DISCLAIMS ANY LIABILITY FOR ERRORS CONTAINED IN
PLANS SUBMIEIED TO THE CITY OF CON( ORD. THE SIGNATURE OF THE CITY OF CONCORD
ENGINEER MAY NOT BE RELIED UPON TO ESTABLISH ANY DUTY OR RELATIONSHIP (SUCH AS
A THIRD PARTY BENEFICIARY) WITH ANY PARTY USING THIS PLAN OR DRAWING. PARTIES
USING THIS DOCUMENT SHOULD CONDUCT THEIR OWN REVIEW AND ANALYSIS FOR
MAKING A DECISION IN RELIANCE ON THIS DOCUMENT,
This letter shall not be construed as an "Authorization to Construct" by the City of Concord. All
applicable permits associated with this project must be obtained and copies must be presented on
site prior to commencement of the work.
IMPORTANT: The Cabarrus County Board of Education must submit a copy of the NCDENR-
Division. of Water Quality, Non -Discharge approval letter and "authorization to construct" permit
and a copy of the engineer's final certification to the City of Concord prior to interconnection
with the City of Concord's public wastewater collection system. The City of Concord must be
present to observe the connection of this private system, in order to meet the Standard
Specifications for Wastewater Collection and Water Distribution for Cabarrus County. Contact
Phillip Kingsland, Construction Administrator, at [phone] at least 48 hours prior to the
initiating system connection.
Construction of the private wastewater collection system project shall be in accordance with I 5A
NCAC 02T.0300; The Division of Water Quality's Gravity Sewer Minimum Design Criteria
adopted February 12, 1996, as applicable. This does not constitute an acceptance of any part of
the project that does not meet North Carolina Administrative Code Title 15A 02T.0300, as
applicable. Failure to comply may result in penalties in accordance with North Carolina General
Statute §1.43-215.6.A through §143-215.6C, construction ofadditional or replacement facilities,
and/or referral of the North Carolina -licensed Professional Engineer to the licensing board.
Please be aware that the City will not assume any responsibility for the operation and
maintenance of the subject private wastewater collection system that is located on the property
beyond the public utility easementir s-of-way.

The Cabarets County Board of Education will be responsible for complying with the regulatory
requirements in accordance with North Carolina Administrative Code Title 1:5A O2T.0340, the
maintenance and operation of the private wastewater collection system, and obtaining the
required permit approvals associated with the private wastewater collection system. Please
review this section of the Administrative Code prior to submitting, your application to the State,
If the permit applicant is unable to perform all of the operation and maintenance duties required
by the State's Administrative Code, a private wastewater collection system extension should not
be requested.
The City reserves the right to disconnect the subject wastewater collection system and potable
water service from the City of Concord.'s public system if improper operation and maintenance of
the private system violations of any Federal, State or local regulations, ordinances, or policies.
After the private wastewater collection system has been constructed and prior to water service
activation, the Cabarrus County Board of Education must complete the NCDENR DWQ regulatory
requirements in accordance with North Carolina Administrative Code 15A NCAC 2T for final
approval and the Cabarrus County Board of Education's engineer must certify that the private
wastewater collection system has been installed in accordance with North Carolina
Administrative Code 15A NCAC 2T. A copy of the engineer's certifications, private system
final approval/acceptance letter, and correspondences, as applicable must be submitted to the
City of Concord.
Sincerely,
City of Concord
Sue Hyde, PE
Director of Engineering
fate
Sincerely,
City of Concord
cc: Project f12009-010 A.T. Allen E,detxtetscary, School Public Water & Private Wastewater Extension. Modification
The Issacs Group
Anthony B. Cowan, NCPE
8720 Red Oak Blvd..
Suite 420
Charlotte, NC 28217
E-Copy:
Mark Fowler, Director of Wastewater Resources
M. Sue .Hycle, Director of Engineering,
Phillip Kinesland, Constriction .Adrn nistrator

Permit Number
Perm Tracking Slip
Program Category
Non -discharge
Permit Type
Gravity Sever xtersiert. Pu
Extensions
Printery Reviewer
dee.brwder
Coastal SW Rule
Permitted Floc
12360
Fact!
arts,
Pres ure
Eau lity Name
.A:T Allen Effimentar ° Schad
Location Addei
ner
Status
In review
Version
B
Project Type
Major modification
Permit Class
lrtdiv'idul
Penn "stContact Affiliation
Major/ l linor
Miner
Fecal
Region
Mooresville
County
Cbrrus
Affiliation
Owner Name
barrus Count Board Of Education
lEy
Orig Issue
05112109
Owner Type
t cr Governrrrerrt
Owner Affiliation
Gene Jordan
PO Box 388
Concord
.pp Reg Ned Draft initiated
02 0111
Regulated ActivitieSchool
debate ccilecdo
ttfll
Waterbody Name
ctleduled'
ssuance
Public No
NC
issue Effective
02/02110 i 3.r02r1t
Rey e tediReceived: Events
Additional furor align reuel red
Additional infor,°na d
stream lndax Numb r'
Subbasin

'AtvI
„ .
TE* ANK
STATE OF NORTH CAROLINA
•
liksTCHAIRNA nONA li
CONCUR D, NG
C.AI3ARR COUNTY ADMINISTRATIVE'UN
jlv66,7.11531 NO.
Gibamis CA PT- OUTLAY FOND/ CiF.NERAL EXLT N \(1I Fin
Cr lty SChOols .1410ti I)(JRS FA-it3N-1" HAS 11-1 OVED AS klIQLriftED
tiY 111E SC ICA)1.„ rik„rP Kin" AN D L coNTRot, ACT
PAY EXACTLY ** * * * * 4 8 0 DOLLARS AND NO CENT
TO
TIIE NCDENR
ORDER 610 E. CENTER AVENUE
SUITE 3 01
OF MOORESVILLE , NC 2 8115
090 La flu° 1:053 L007371: 0 Lao 205500
901873
D te 1 1 / 2 0 / 0 9
!,VOMAFTERONTypdo*
1044K ,VA" POW 200 MOO UA4,

Fast Track En tineerint Certification
Permit No. WQ0033950 Modification
February 2, 2010
OwnerIWQCS
Len Witke, Dir, of Const.
Cabarrus County Board of Ed.
4401 Old Airport Road
Concord, NC 28025
VTP,WQCS
Thomas Bach
WSACC
PO Box 428
Concord, NC 2802E
PE
Anthony B. Cowan
The Isaacs Group, P.C,
8720 Red Oak Blvd„ Ste 420
Charlotte, NC 28217
City,of Concord
Mark Fowler
City of Concord
PO Box 308
Concord, NC 28026
Complete and submit this form to the permit issuing regional office with the following:
• One copy of the project record drawings (plan & profile views of sewer lines) of the wastewater collection
system extension
• Supporting design calculations (selected pumps, system curve, operating point, available storage if portable
generator(s) or storage greater than longest past three year outage reliability option selected) for any pump
stations permitted as part of this project
• Changes to the project should be clearly identified on the record drawings or in written summary form. Permit
modifications are required for any changes resulting in non-compliance w"sth this ail, regulations or
minimum design criteria.
This project shall not be considered complete nor allowed to operate until this Engineer's Certification and all
required supporting documentation have been received by the Division. Therefore, it is Nighty recommended
that this certification be sent In a manner that provides proof of receipt by the Division.
ENGINEER'S CERTIFICATION
El Partial Final
"info cLw`` as a duly registered Professional Engineer in the State of North Carolina, having been
authori ed to observe (i i periodically; © weekly, El full time) the construction of AT Allen Elementary School, an
Cabarrus County project for the Permitted, hereby state that, to the best of my abilities, due care and diligence was
used in the observation of the construction such that the construction was observed to be built within substantial
compliance of this permit; 15A NCAC 2T.. the Division of Water Quality's (Division) Gravity Sewer Minimum Design
Criteria adopted February 12, 1996 as applicable; the Division's Minimum Design Criteria for the Fast -Track Permitting
of Pump Stations and Force Mains adopted June 1, 2000 as applicable; and other supporting materials,
North Carolina Professional Engineer's
seal, signature, and date:
SEND THIS FORM & SUPPORTING DOCUMENTATION
WITH REQUIRED ATTACHMENTS TO THE FOLLOWING ADDRESS
MOORESVILLE REGIONAL OFFICE
SURFACE WATER PROTECTION
610 EAST CENTER AVENUE, SUITE 301
MOORESVILLE NC 28115
The Permittee i responsible for tracking all partial certifications up until a final certification is received, Any
wastewater flow made tributary to the wastewater collection system extension prior to completion of this Engineer's
Certification shall be considered a violatiion of the permit and shall subject the Perr e to appropriate
enforcement actions.

LTAE 04}
� K
A TE
40
704)
BY�
ACM'
f
RE ;l N
fƒACitu

PROJECT
17-Nov-00
Force main highest elevation
Lowest force main o|evodon=
Number ofunits
=
Unit Flow (gpd)=
Additional flow
Total Flow (gpd).(gpm)=
Req'd Pump Capacity (opd).(mpm)=
Actual Design Punm � Rabe(gpm)
Diameter ofWet Well (ft)=
Vo|unl*V\8N per foot (cf/ft). (g/ft) =
Storage Depth (ft)=
Storage Volume (cf). (gal) =
Fill Time for Storage Depth (min) =
Run time for Storage Depth (min) =
Total Cycle time (min) =
Pump Cycles/ hr=
Head Loss due toFriction (in proposed pipe):
Pump Elevation =
Force Main Equivalent Length (fU=
Force Main Diameter (in) =
Velocity in FM at pump rate (fUs) =
Hazen-m/Niomo^C'=
Frictional head loss /1O[/stpump rate (fU=
Frictional head |ono at actual pumping rate (ft) =
Tota|ExisdoQHead (ft)=
Total Static Head (fU=
'Total Frictional Head (ft)=
Total Dynamic Head =
Wet Well/ Switch ElevaUons
Rim Elevation =
Lowest Gravity Sewer Inlet Invert
=
High water alarm eYov, =
Lead pump un e|ev.=
Pumps offe|ev' =
Bottom nfWet VVe\�elev.
=
Depth of Wet Well =
Pump Selection'.
"nnrz `
None
30,900.0 21.5=2,5*Totalflow PEAK FLOW
m�
28,26 211.4=1ft * 3.14~D^2/4
23,46 175.4 = Storage Depth °Vol4mne/ft
20,44 = Storage Volume/ Total awg.0ow
4.88 = Storage Volume/ (Pump Rate 'Tota| flow)
25�30 = Fill time + Run time
2.37 =0O/Tota1Cycle time
649,33
84&BO
647,50
12.00
FLYGTMP3O85]72(Explosion proof)
4HP- 40QV-Three Phase Grinder Pump
(Or Approved EquivaIent)
=gpnm°D4O8/D^2
For old pvc
= Force Main Length/100 * Head Loss
=Diff, b/t highest and lowest FM elev.
=Force Main OQ°Head Loss
= Exist. Head + Static Head * Frictional Head
(PER SHTC6,U)
= Invert elev. - O.44'
= High wete/a|amnelev,-2U'
= Lead a|ev-Storage Depth = PumpBev.
= Pumpa|ev. - 1.0'
= Rim elev. ' Bottom VV\Ne|ev,
P:\l - PROJECTS\Cabarr-us County Schools\AT Allen Elern School Barringer Pump Station

Pump at on iqn
Force main profile
Air release valves
Cover over force main
Valve pit
YES
YES
MIN.
YES
Static Head (ft) 46,65
Alarm Audible and Visible
Wet"ell vented YES
On Site Generator YES
Automatic Transfer Switch YES
Wet well depth (ft) 12.00
Projected Flow:
Average daily flow (gpm) 8.58
Required pump rate (.5:1) (pm) 21.46
Design pump rate (gpm) 44.70
Wetwell Detention.
Storage Volume(gal) 175.45
Pump Rate (gpm) 44.70
Average inflow rate (gpm) 8.58
Fill time (rnin) 20.44
Pump time (min) 4.86
Cycle time (min) 25.30
Cycles per hour 2.37
TIH:
Force main highest elevation = 87.55
Pump elevation 647.50
Force main diameter (in) 00
Force main length (ft)- Proposed pipe
Force main length (ft) - Existing pipe
Head oss/100
Velocity (ftis)
C value ( I:100, PV .1 00, HDPE:120)
Dynamic Head (ft) 47.60
Total Dynamic Head (ft) 94.25
0.80
2.03
Pump Selection: FLYGT MP3085.17 (Explosion proof)
4 HP- 460 - Three Phase Grinder Pump
(Or Approved Equivalent)
Grinder Pump
Adjustable Hoist
Duplex
Alternating Cycle
Power Requirement
44,7 gpm @ 94.25 TDH
YES
YES
YES
YES
P:\1 - PROJF TS\ ab rrus County chool \AT Allen Bern School Barringer Pump Station
09178\Engineering\Calculations\0901 -PUMP AL -rev. xis
Page

PERFORMANCE CURVE
MP3085.172
PE
HT
DATE
2009-08-10
OWER FACTOR.
ICIENCY
OTOR DATA
COMMENTS
0
PROJECT
OAD 3/4-LOAD 1/2-LOAD
0.92
81,0
DU -PONT FLOWjusgprn] HEAD
1 44.70 4.t;
B.E.P. 47.55 9E7,9
RATED
POWER .....
0,83 STARTING
81.0 CURRENT .,,
RATED
CURRENT ..,
Performance with clear water and ambient temp 40 °C
RATED
SPEED .....
TOT.MOM.OF
INERTIA ...
NO, OF
BLADES
4 hp
30 A
5.0 A
3430 rpm
POWER [ram[ EFF, p%) NP$Href1t
4,20 (3,40) 25.4 (31
4.27 (3,49) 25.6 (31.4
sIIRVE NO ISSUE
63-259-00-2360 7
IMPELLER DIAMETER
150 mm
MOTOR #
15-09-2A
STAT
11
FREQ. PHASE
60Hz 3
VOLTAGE
460 V
POLES
2
R
EFF.
©raj
40
20
0
40 60 [USglpmj
FLOW
HI B Curve

C C N T CA NA

WASTEWATER LRATE
PROJECT:: A,T, Allen Eiernerat School, Caberrus County NC
ENR-ENVIRONMENTAL MANAGEMENT COMMISSION T1 .A, 02H .0200
NORTH CAROLINA ADMINISTRATIVE CODE (Effective April; 2001) Page , 7-39
Typof Establishrn rat Gallons Area (s Seats Employees Other Units Rally
School Faciaties
gal i student
gal l horns
12 1000 people 12,000
360
1 home 360
(0 total
De ign Flow Rate: 2,360 gpd
(515 pph)

STO "GE TANK I
% Build out (See following calculations)
PROJECT. A.T. Allen Elernentar
DATE: 16-Nov-09
Number of units =
Unit Flow (gpd)
;Additional flow
Total Flow (gpd), (gpm -'
Total Peak Flow (gpd), Wpm)
School
1'
12000 =School
360 Home
12360,0 8.6 =No. units*unit flow +add
30900,0 21.5 - 2.5 *Total flow
Emergency Storage Data
Rim Elevation = 659,50
Lowest el. where wastewater could escape = 659.00 —RE. of MH #1
Pumps off etev..= 648,50
llyet Well Storage Data
Diameter of wet wwel9
Area (sq. ft)
Volume per foot (eft)z {l
Storage Depth (ft)
Storage Volume (of), (gal)
Detention time =
1.64 hrs.
6
28.27
28.27211,5
10.00
282.74 2114,9 = Storage Depth * Volu