WQ0033330_Regional Office Historical File Pre 2018

NCDENR
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Beverly Eaves Perdue Celeen H, Sullins
Governor Director
February 16, 2009
Mr. Barry f7. Shearin, P.F
Charlotte -Mecklenburg
5100 Brookshire 131vd.
Charlotte, North Carolina 28216
XVQ-Sur or Poe n
YT: Charlotte -Mecklenburg Utilities
Permit No, WQ0033330
Transmittal of Approved Plans and Specificati
Dear Mr, Shearin.
Enclosed is a copy of'ihe plans and specification, which were approved on
February 9, 2009. The subject documents have been stamped "approved" 'Or your records. The
Perniittee should retain these documents for the life of the facility.
Should you have questions regarding this rtatter, stall me at [phone].
AR: sr
Enclosures
cc: Watson, 1 'oolpert.
[ooresville Re Tonal Office
Daniel Blaisdell, P.E.
Anita l;, Reed, P.F.
Permit Application. File =''Q0033330
Seth Robertson, P.
gn Managemer
Supervirt
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) ak 131y d. Suite 101, Charlotte, NC 28217
1633 Ma
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276991633

NCDENR
North Carolina Department of Environment and Natural Resourc
Division of Water Quality
Beverly Eaves Perdue Coleen I-1, Sullins
Governor (Director
bruary 9, 2009
Mr. Barry D. Shearin, l.E. Chi. ef Engineer
Charlotte -Mecklenburg Utilities
5100 Brookshire Blvd.
Charlotte, North Carolina 28216
SUBJECT: Permit No. WQ0033330
Charlotte -Mecklenburg Utilities
Reedy Creek Pump Station, Force Main, Gravity
Sewer, and Middle and Upper Reedy Creek
interceptor
Cabarrus County
Dear Mr. Shearin:
In accordance with your permit application received August 11.„ 2008, and additional
information received by the Division of Water Quality, we are forwarding herewith Permit No.
WQ0033330 dated February 9, 2009, to Charlotte -Mecklenburg Utilities for the construction and
operation of the subject wastewater collection system.
This Permit shall be effective from. the date of issuance until rescinded, and shall be
subject to the conditions and limitations as specified therein.
If any parts, requirements, or lin nations contained in this pern it are unacceptable, you.
have the right to request an adjudicatory hearing upon written request w Within 30 days following
receipt of this permit. This request must be in the form of a written petition, conforming to
Chapter 150B of North. Carolina General Statutes, and fled with the Office of Administrative
Hearings, 6714 Mail Service Center, Raleigh, NC 2.7699-671.4. Unless such demands are made
this permit shall he final and binding„
Upon completion of construction and prior to oper°anon of this permitted facility, a
certification must be received from a professional engineer certifying that the permitted facility
has been installed in accordance with the approved plans and specifications. Mail t:he
Certification to the Construction Grants & Loans Section, 1633 Mail Service ['enter, Raleigh,
North Carolina 27699-1633. (Engineer's Certification Form is attached.)
One set of approved plans and specifications is being forwarded to you.
1617` Ma 4 rvic ' nt r: Raleigh. North
2 N. Saliskrary St Raleigh, NorgI Carolina 27`6€Ja
phone: 917S-807.63001 7A7:919-808 6492 Customer Service 1 23 6746
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An!':.q UJ° Oppc4um!y 'ff4ir'tlry A.'iv;i-€10 yF,.

Mr. Shearin
February 9, 2009
Page 2
If you need additional information concerning this matter,. please contact Anita E. Reed, P.E.,
State Review Engineer, at (919) 715.-621 or Seth Robertson, P.E. at [phone].
Sincerely,
A9
Coleen H. Sullins
AR/sr
cc: Paul C. Watson, Jr., P.E. Woolpert, 8731 Red Oak Blvd. Suite 101, Charlotte, NC 28217
DWQ Mooresville Regional Office, Surface Water Protection (NC0036269)
Cabarrus County Health Department
Daniel Blaisdell, P.F.
Seth Robertson, P.E.
Anita E. Reed, P.E.
Permit Application File WQ0033330

NORTH CAROLINA
ENVIRONMENTAL MANAGEMENT COMMISSION
DEPARTMENT OF ENVIRONMENT AND NATURAL RESOURCES
RALEIGH
WASTEWATER COLLECTION PERMIT
In accordance with the provisions of Article 21 of Chapter 143, General Statutes of North
Carolina as amended, and other applicable Laws, Rules, and Regulations
PERMISSION IS HEREBY GRANTED TO
Charlotte -Mecklenburg Utilities
Cabarrus County
FOR THE
construction and operation of a sewer system consisting of: a 14.4 MGD triplex pump station
with telemetry, on -site audible and visual high water alarms, 1000kW on -site generator with
automatic transfer switch, air scrubber, and odor control system; approximately 3,926 linear feet
of 24-inch force main; 2,270 linear feet of 48-inch gravity sewer; 14,604 Iinear feet of 42-inch
gravity sewer; 14,887 linear feet of 36-inch gravity sewer; 4,138 linear feet of 30-inch gravity
sewer; 131 linear feet of 24-inch gravity sewer; 3,911 linear feet of 12-inch gravity sewer; 5 8-
foot diameter, 15 7-foot diameter, 79 6-foot diameter, 1 5-foot diameter, and 10 4-foot diameter
manholes; to serve the Reedy Creek area, with no additional discharge to the Rocky River
Regional WWTP (NC0036269), pursuant to the application received on August 11, 2008, and
subsequent additional information received by the Division of Water Quality (Division), and in
conformity with the project plans, specifications, and other supporting data subsequently filed
,and approved by the Department of Environment and Natural Resources and considered a part of
this 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 facilities are constructed in accordance with the
conditions of this permit; the approved plans and specifications, and other supporting data.
2. This permit is 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
.0400. If an individual permit is not required, the following performance criteria shall be met
as provided in 15A NCAC 2T .0400:

Charlotte -Mecklenburg Utilities
February 9, 2009
Permit No, WQ0033330
Page 2
(a) The sewer system shall be effectively maintainedand operated at all times to prevent.
discharge to land or surface waters, and to prevent any contravention of groundwater
standards or surface water standards.
(b) A map of the sewer system shall be developed and actively maintained.
(c) An operation and maintenance plan including pump station inspection frequency,
preventative maintenance schedule, spare parts inventory and overflow response shall
be developed and im.plemented..
(d) Pump stations that are not connected to a telemetry, system (i.e., remote alarm system)
shall be inspected by the permittee or its representative 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 sewers shall be inspected by the permit:tee or its representative at least
once every six -months and inspections are documented,
(f) A general observation by the permittee or its representative of the entire sewer system
shall be conducted at least once per year.
(g) Overflows and bypasses shall be reported to the appropriate Division regional office
in accordance with I 5A 'NCAC 02B .0506(a), and public notice shall be provided as
required by G.S. 14.3-21 5 ..I C.
(h) A Grease Control Program shall be established as follows:
(i) For publicly owned collection systems, the Grease Control Program shall
include at least bi-annual distribution of educational materials for both
commercial and residential users and the legal. means to require grease
interceptors for new construction and retrofit, if necessary, of grease
interceptors at existing establishments. The plan shall also include legal means
for inspections, of the grease interceptors, enforcement l'or violators. and the
legal means to control grease entering the system from other public and
private satellite sewer systems.
For privately owned collection systems, the Grease Control Program shall
include at least bi-annual distribution of grease education materials to users of
the collection system by th.e permittee or its representative.
Grease education materials shall be distributed more often than required in
Parts (i) and (ii) of this Subparagraph if necessary: to prevent grease -related
sanitary sewer overflows.
Right-of-ways and easements shall be maintained in the full easement width for
personnel and equipment. accessibility..
Documentation. shall be kept for Subparagraphs through (i) for a minimum of
three years with exception of the map, which shall be maintained. for the life of the
system,
4. The sewage and wastewater collected by this system shall be treated in the Rocky River
Regional WWTP (NC0036269) sewerage system prior to being discharged into the receiving
stream,

Charlotte -Mecklenburg Utilities
February 9, 2009
Permit No. WQ0033330
Page 3
5. This permit is not transferable. In the event there is a desire for the facilities to change
ownership, or there is a name change of the Permittee, a formal permit request must be
submitted to the Division accompanied by an application fee, documentation from the parties
involved, and other supporting materials as may be appropriate. The approval of this request
will be considered on its merits and may or may not be approved.
6. Construction of the sewers, pump station(s) and force main shall be scheduled so as not to
interrupt service. by the existing utilities nor result in an overflow or bypass discharge of
wastewater to the surface waters of the State.
7. A copy of the approved plans and specifications shall be maintained on file by the Permittee
for the life of the wastewater collection facilities.
8. Upon completion of construction and prior to operation of this permitted facility, a
certification must be received from a professional engineer certifying that the permitted
facility has been installed in accordance with this permit, the approved plans and
specifications, and other supporting materials. If this project is to be completed in phases
and partially certified, you shall retain the responsibility to track further construction
approved under the same permit, and shall provide a final certificate of completion once the
entire project has been completed. Mail the Certification to the Construction Grants & Loans
Section, 1633 Mail Service Center, Raleigh, North Carolina 27699-1633. (Engineer's
Certification Form is attached.)
9. Failure to abide by the conditions and limitations contained in this permit may subject the
Permittee to an enforcement action by the Division, in accordance with North Carolina
General Statute 143-215.6A to 143-215.6C.
10. The issuance of this permit does not exempt the Permittee from complying with any and all
statutes, rules, regulations, or ordinances that may be imposed by other government agencies
(i.e., local, state, and federal) having jurisdiction, including but not limited to applicable river
buffer rules in 15A NCAC 2B .0200, soil erosion and sedimentation control requirements in
15A NCAC Chapter 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. The Permittee shall provide for the pump station and force main the following items:
(a) Pump Station Reliability:
(i). Pump stations, except when exempted by Subparagraph (j)(2) of 15A NCAC
02T.0305, shall be designed with multiple pumps such that peak flow can be
pumped with the largest pump out of service.
(ii) A standby power source or pump is required at all pump stations except for
those pump stations subject to Subparagraph (j)(2) of 15A NCAC 02T.0305.
Controls shall be provided to automatically activate the standby source and
signal an alarm condition.

Charlotte -Mecklenburg Utilities
February 9, 2009
Permit No. WQ0033330
Page 4
(iii) As an alternative to Part (ii) for pump stations with an average daily design.
flow less than 15,000 gallons per day as calculated using 15A NCAC
02T.01.14, a portable power source or pumping capability may be utilized. It
shall be demonstrated to the Division that the portable source is owned or
contracted by the permittee and is compatible with the station. If the portable
power source or pump is dedicated to multiple pump stations, an evaluation of
all the pump stations' storage capacities and the rotation schedule of the
portable power source or pump, including travel. timeframes, shall be provided
in the case of a multiple station power outage.
(iv) As an alternative to Part (ii) for pump or vacuum stations connecting a single
building to an alternative sewer system, wet well storage requirements. shall be
documented to provide 24-hours worth of wastewater storage or, exceed the
greatest power outage over the last three years or the documented response
time to replace a failed pump, Whichever is greater. Documentation shall be
required pursuant to the permit application.
(v) All pump stations designed for two pumps or more shall have a telemetry
system to provide remote notification of a problem condition to include power
failure and high water alarm.
(vi) High water audio and visual alarm.
(b) Pump stations shall have a permanent weatherproof sign stating the pump station
identifier, 24-hour emergency number and instructions to call in case of emergency.
(c) Screened vents for all wet wells.
(d) 'file public shall be restricted access to the site and equipment.
(e) Air relief valves shall be provided at all high points along force mains where the
vertical, distance ex.cceds ten feet..
12. In the event that the facilities fail to perform satisfactorily, including the creation of nuisance
conditions, the Permittee shall take immediate corrective action, including those that may be
required by this Division, such as the construction of additional or replacement wastewater
collection facilities.
13. The facilities shall be constructed in accordance with the requirements of the North Carolina
Sedimentation Pollution Control Act.
14. If applicable, the Operational Agreement between the Permittee and the Environmental
Management Commission is incorporated herein by reference and is made a condition of this
Permit. Noncompliance with the terms of the Operational Agreement may subject the
Permittee to an enforcement action by the Division in accordance with North Carolina
General Statute 143-215.6A to 1.43-21.5,6C. A copy of the Articles of Incorporation,.
Declarations, and Bylaws that have been properly filed shall be submitted with the engineer's
certification prior to operation.
15. Any abandoning of the existing facilities must be done in accordance with the requirements
of the Division's Mooresville Regional Office.

Charlotte -Mecklenburg Utilities
February 9, 2009
Permit No. WQ0033330
Page 5
16. Noncompliance Notification:
The Permittee shall verbally report to a water quality staff member 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 render the facility
incapable of adequate wastewater transport such as mechanical or electrical failures
of pumps, line blockage or breakage, etc.
(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.
Voice mail messages or faxed information is permissible but this 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 at telephone number (800) 858-
0368 or [phone]. Persons reporting any of the above occurrences shall file a spill
report by completing Part I of Form CS-SSO (or the most current Division approved form),
within five days following first knowledge of the occurrence. This report shall outline the
actions taken or proposed to ensure that the problem does not recur. Per Condition I(2), Part
II of Form CS-SSO (or the most current Division approved form) can also be completed to
show that the SSO was beyond control.
Permit issued this the 9th Day of February 2009
NO TH CAROLINA ENVIRONMENTAL MANAGEMENT COMMISSION
—P at/. /3
kr- Coleen H. Sullins, Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit No. WQ0033330

Charlotte -Mecklenburg Utilities
Permit No. WQ0033330
Reedy Creek PS, FM, GS, and Middle and Upper Reedy Creek Interceptor
Issued February 9, 2009
ENGINEERS CERTIFICATION
1, , as a duly registered Professional Engineer in the
State of North Carolina, having been authorized to observe (periodically/weekly/full time) the
construction of the Reedy Creek sewer collection system serving Cabarrus County, hereby state
that to the best of my abilities, due care and diligence was used in the observation of the
following construction:
14.4 MGD triplex pump station with telemetry, on -site audible and visual high
water alarms, 1000kW on -site generator with automatic transfer switch, air
scrubber, and odor control system; approximately 3,926 linear feet of 24-inch
force main; 2,270 Iinear feet of 48-inch gravity sewer; I4,604 linear feet of 42-
inch gravity sewer; I4,887 linear feet of 36-inch gravity sewer; 4,138 linear feet
of 30-inch gravity sewer; 131 linear feet of 24-inch gravity sewer; 3,911 linear
feet of 12-inch gravity sewer; 5 8-foot diameter, 15 7-foot diameter, 79 6-foot
diameter, 1 5-foot diameter, and 10 4-foot diameter manholes; and in conformity
with the project plans, specifications, and other supporting data subsequently filed
and approved by the Department of Environment and Natural Resources.
I certify that the construction of the above referenced project was observed to be built within
substantial compliance and intent of the approved plans and specifications.
Signature Registration No.
Date
Mail this Certification to: DENR/DWQ
Construction Grants & Loans Section
1633 Mail Service Center
Raleigh, North Carolina 27699-1633.
SEAL1L_?
'
Note: If the wastewater collection permit was issued to a private entity under an
Operational Agreement with the Environmental Management Commission, then a
copy of the Articles of Incorporation, Declarations, and Bylaws that have been
properly filed with the applicable County's Register of Deeds shall be submitted
with this certification.

North C iroIina Dcpi
December 16, 2008
Mr. Barry D. Shearin, P.E., Chief Engineer
City of Charlotte, Charlotte -Mecklenburg Utilities
5100 Brookshire Blvd.
Charlotte, North Carolina 28216
Michael 12, Easley, Governor
William Ci. Ross Jr,, Secretary
ironn°rent and Natural Resources
Colcen H, Sullins, Director
Division of Water Quality
SUBJECT: Request for Additional. Information
City of Charlotte, Charlotte -Mecklenburg Utilities
Upper and Middle Reedy Creek Interceptor
Permit. No, WQ0033330
Mecklenburg County
Dear Mr, Shearin:
A review of the plans and specifications in support of the perrrait application package has
been completed by the Construction Grants and Loans Section (CG&LThe comments
resulting from this review are being transmitted directly to your engineer for clarification and
resolution; a copy is attached for your reference. Our goal is to issue the permit as soon as
possible. if a complete response is not received within 30 days, the application and supporting
information will be returned.
Upon receipt of satisfactory responses from your engineer to our comments, the review of
the plan documents will be completed, if you have any questions concerning this 'natter, please
do not hesitate to contact Anita E. Reed, P.E., State Project Review Engineer, at [phone].
Sincerely,
of p,=,
Seth Ro, P.E;., Supervisor
Construction Grants and Loans Sec
Design Management Unit
AR/dr
Attachn tent to all
cc: Paul C. Watson, Jr., P.E. a, Woo pert, 8731 Red Oak Blvd. Suitt:. 10
DWQ Mooresville Regional Office (NC0036269)
Daniel Blaisdell, I'.f.
Seth Robertson, P.E.
Anita F. Reed, P.E.
Permit Application ly`ile WQ00333 30
-lotto, NC28217
Construction Grants and Loans Section
1633 Mail Service Center Raleigh NC 27699-1633
Phone: [phone] I FAX: [phone] Internet: +nww.nccgl net
An Equal Opportunity/Affirmative Action Employer ._ 50% Recycled/10°%a Post Consumer Paper
One
NorthCaro ina.
aurally

Construction Grants & Loans Section
Design Management Unit
City of Charlotte, Charlotte -Mecklenburg Utilities
Upper and Middle Reedy Creek Interceptor
Permit No. WQ0033330
Mecklenburg County
Request for Additional Information
General Comments
1. Provide two copies of revised plans, specifications, and additional information.
2. Provide a letter stating maximum Iength of pipe between manholes the Water and Sewer
Authority of Cabarrus County (WSACC) can maintain.
3. Provide signed, sealed, and dated Engineer's Certification for GS 133-3.
4. Include USACOE mitigation requirements in plans and specifications.
5. Specifications, plans, and calculations must be signed, sealed, and dated by a registered NC
Professional Engineer.
Review of Calculations
6. Provide all design calculations for this project, including buoyancy calculations for the flow
metering stations and future flow projections for each size of pipe.
7. All pipe with less than 2 ft/s scouring velocity at present day flow will be designated as high
priority.
Review of Specifications
8. Removal of erosion and sedimentation control devices in section 02270-5 #3.6A references
section 01014. This section is not included in the specifications provided. Please correct and
include modifications required by the Soil and Erosion Control Plan.
9. Consider specifying pipe material and having the contractor provide bids for alternate materials.
10. Verify number of manholes on the bid sheet match what is in the plans. Currently stated 9
manholes are to be bid but 11 are shown in the plans.
Review of Plans
11. Verify all wells are shown on plans.
12. Provide manhole (MH) vents every 1000 feet or every other manhole.
13. Provide anti seep collars at all wetland crossing locations.
14. Move manholes to locations 50 feet from the wetlands. If this is not possible provide special
construction. (See new draft design criteria attached)

MiddleReedy Creek lnter
15. Provide a detail of the flow channel in MH MR-1.
16. Raise the invert of the 30" pipe in MH MR-1 to prevent back flow from the 42" pipe.
17. Move MH MR-3 from the middle of the stream. It must be 10' from the top of bank.
cepJor
'Upper Reedy Creek Interceptor Line A
18. Move Mil UR.-39 and UR-41 out. of the wetland if possible. If this is not possible provide special
construction. (See new draft design criteria attached)

NC Division of Water Quality
August 2008
Policy for Minimum Separation for Sewer Systems to Wetlands
15A NCAC 2T .0305(0
Rule I5A NCAC 2T .0305 provides design criteria for sewer line extensions including required
separation distances. The rule requires that sewer systems be located at least 50 feet away from
all wetlands and provides alternative criteria for instances when the setback cannot be
maintained. The following provisions are relevant to this policy:
(f) The following minimum separations shall be provided for the sewer system
except as allowed by Paragraph (g) of this Rule:
Waters classified WS (except WS-I or WS-V), B, SA, ORW,
HQW, or SB from normal high water (or tide elevation) and
wetlands ... 50 feet
(g) Alternatives where separations in Paragraph (f) of this Rule cannot be
achieved.
(5) For all other separations, materials, testing methods and
acceptability standards meeting water main standards (15A NCAC
18C) shall be specified.
While the rule provides alternatives for piping material when the separation to wetlands cannot
be met, the rule does not address manholes and pump stations. In accordance with the provision
for alternative design covered under 15A NCAC 2T .0105(n), adherence to the following criteria
shall be considered equivalent to the Rule .0305(f):
A. Sewer systems shall be designed to maintain maximum feasible separations when a 50
foot separation cannot be met.
B. With regards to pump stations serving a single building:
1. Pump stations shall be of a type specifically engineered to be watertight in
floodplain conditions including watertight lids.
2. Wet wells shall be constructed of either high density polyethylene or fiberglass
reinforced polyester resins with all seams thermally welded and factory tested for
leak tightness.
3. All necessary penetrations shall be factory sealed and tested. No field
penetrations will be allowed.
4. The pump station shall be located no further than 50 feet from the building served
and shall be vented back to the building.
5. All pump station wet wells shall maintain a separation of no less than 10 feet from
wetlands.

C. All otherpump station wet wells shall be located a minimum of 50 feet fro
D. With regards to manholes:
v
ands.
1. Manholes shall be provided with a watertight frame and cover with gasket..
2. All manhole seams shall. be externally taped/sealed.
3. Manholes shall be provided with a full waterproof interior coating/lining.
4. Watertight pipe connections shall be provided consisting of a flexiblerubber boot
or compression type connector.
5. All manholes shall be tested in accordance with ASTM C1244 "Standard Test
Method for Concrete Sewer Manholes by the Negative Air Pressure (Vacuum)
Test. Prior to Backfill".
6. "Dog house" type manholes shall not be used.
7. All manholes not included as part of a USACOE 404 Permit or Division 401
Certification shall .maintain a separation of no less than 1.0 feet from wetlands.

�"Itlt'i
North Carolina I)cpnrtnrent of } nvironna
I)ecettlber 9, 2OO8
Mr. Barry .D. Shearin, P.E., Chief Engineer
City of Charlotte, Charlotte -Mecklenburg Utilities
5100 Brookshire Blvd.
Charlotte, North Carolina 28216
SUBJECT: Request for Additional
City of Charlotte, Charlotte -Mecklenburg; Utilities
Reedy Creek PS, FM & JS
i it No. WQ0033330
cklenburg County
Mr, Shearin:
A review of the plans and specifications in soil Dort of the permit application package has
been completed by the Construction Grants and Loans Section (CG&L). The comments
resulting from this review are being transmitted directly to your engineer for clarification and
resolution; a copy is attached for your reference. Our goal is to issue the permit as soon as
possible. If a complete response is not received within 30 days, the application. and supporting
information will be returned.
Upon receipt of satisfactot ° responses from your engineer to ocir s omments, the re fiew t'
the plan documents will be completed. If you have any questions concerning this matter, please
do not hesitate to contact Anita E. Reed, P.E., State Project Review I ngiiieer, gat (91.9) 715-621. 3
ob
Construction
Design Manages
AR/dr
tons Section
Attachment to all
cc: Paul C. Watson, Jr„ P.E. -- Woolpert, 8731 Red Oak Blvd. Suite 101
DWQ Mooresville Regional Office (NC0036269)
Daniel Blaisdell, P.F.
Seth Robertson, P.I .
Anita i , Reed, P.E.
Permit Application File WQ0033537
a
NC 28217
nor
Construction Grants and Loans Section
1633 Mail Service Center Raleigh NC 27699-1633.
Phone: 919-'733-6900 / FAX: [phone] / Internet: www.nccgl.net
An Equal Opportunity/Affirmative Action Employer -- 5Q°io Recycled/1 O% Post Consumer Paper
One
North Carolina
Vatiiralll

Construction Grants & Loans Section
Design Management Unit
City of Charlotte, Charlotte -Mecklenburg Utilities
Reedy Creek PS, FM & GS
Permit No. WQ0033330
Mecklenburg County
Request for Additional Information
General Comments
1. Provide two copies of revised plans, specifications, and additional material.
2. Provide a letter stating the maximum length of pipe between manholes the Water and Sewer
Authority of Cabarrus County (WSACC) can maintain.
3. Provide signed, sealed, and dated Engineer's Certification for GS 133-3.
4. Include USACOE mitigation requirements in plans and specifications.
5. Specifications, plans, and calculations must be signed, sealed, and dated by a registered NC
Professional Engineer.
6. Include the 1.2 MGD flow from the Reedy Creek Outfall (permit number WQ0033537) in
Mecklenburg County in the flow calculations. The pump station must be sized to accommodate
this flow.
7. It appears the pump station has been designed to handle future flow beyond year 2050. The
pump station as designed will handle the peak flow of year 2050, 20.7 MGD, with two pumps in
service. Please provide engineering basis for the additional pump location designed for future
growth past 2050.
Review of Calculations
8. Provide design calculations for the pump station. Include pump sizing, pump curves, pump cycle
timing, buoyancy of pump station and valve vault, mechanical bar screen sizing and generator
sizing. Show that the pumps and mechanical bar screens can pass peak flow with one unit out of
service.
9. Provide the minimum flow rate the pumps can operate at on VFDs. Also, calculate the pump
cycle timing at this low flow rate.
Review of Specifications
Pump Station
10. Provide bid documents in specifications. Section 00300 is missing.
11. Explain the operation conditions and performance specifications given for the pumps in the
specifications. It appears the third set of conditions (11,500 gpm at 167 TDH) is on a different
pump curve.
12. Design must include audible and visual alarms, in addition to the auto dialer provided.

Force Main and Gravity Sewer
13. Removal of erosion and sedimentation control devices in section 02270-5 #3.6A references
section 0101.4. This section is not included in the specifications. Please correct and include
modifications required by Soil and Erosion Control Plan.
14. Consider specifying pipe material and having the contractor provide bids for alternate materials.
Review of Plans
1.5. Verify all wells are located on plans.
Purnp,Station
16. Provide a site plan with all equipment clearly shown. Current views have many obstructions
included which make it difficult to see where equipment is located. Vegetation, grading, and
asphalt surfaces are not needed on all plan views. Please remove unnecessary detail and show all
equipment including yard piping.
17. Provide fillets in bottom of common channel before pump sluice gates and wet well.
18. Correct detail numbering on odor control building, sheet P201. The numbering incorrectly
indicates details are on sheet P 1.02.
1.9. Provide location of discharges from the odor control building sump pum.ps. No discharges are
show on plans.
20. Provide injection site of Bioxide after it ,goes through the control panel.
21. Audible and visual alarm must be located on the outside of the control building or in another
external location.
Line A
22. Provide manhole (Ml3) gents at MUA-3, MIIA-5, and MHA-7.
23. Move META-8 on sheet 7 to a location 50 feet from the wetland. if nit possible provide
construction. (see new draft design criteria attached)
P
al
1..ine 13
24. Consider continuing the force main from the pump station to Mll 3-1 instead of changing to
gravity sewer at station 32k-81. The proposed gravity sewer' will require deep construction to go
under Rocky River and maintain the required minimum slope. If a force main is used instead it
will act as a gravity sewer in this section and should not significantly increase the TDI1, Also,
the force main can reduce construction costs due to the relative shallow depth and lack of
manholes.
25. Provide engineering basis for increasing the pipe diameter from 30" to 48" before the Rocky
River crossing at station 22+35, sheet 14.
26. Correct the size discrepancy fear the carrier pipe at the Rocky River crossing. On sheet 14 the
plan view states a 48" steel casing will be installed. in the profile view the carrier pipe is shown
as 48" in diameter. The casing and carrier pipe cannot be the same size.
27, Provide manhole (Mil) vents at MHf3-4, MEIE3-7, M1113-10, and MHB-19.
28. Move Mil vent at MI iB-17 to previous Mil to maintain less than 1000 feet separation. Adjust
subsequent vents as needed..

NC Division of Water Quality
August 2008
Policy for Minimum Separation for Sewer Systems to Wetlands
15A NCAC 2T .0305(0
Rule 15A NCAC 2T .0305 provides design criteria for sewer line extensions including required
separation distances. The rule requires that sewer systems be located at least 50 feet away from
all wetlands and provides alternative criteria for instances when the setback cannot be
maintained. The following provisions are relevant to this policy:
(f) The following minimum separations shall be provided for the sewer system
except as allowed by Paragraph (g) of this Rule:
Waters classified WS (except WS-I or WS-V), B, SA, ORW,
HQW, or SB from normal high water (or tide elevation) and
wetlands ... 50 feet
(g) Alternatives where separations in Paragraph (f) of this Rule cannot be
achieved.
(5) For all other separations, materials, testing methods and
acceptability standards meeting water main standards (15A NCAC
18C) shall be specified.
While the rule provides alternatives for piping material when the separation to wetlands cannot
be met, the rule does not address manholes and pump stations. In accordance with the provision
for alternative design covered under 15A NCAC 2T .0105(n), adherence to the following criteria
shall be considered equivalent to the Rule .0305(f):
A. Sewer systems shall be designed to maintain maximum feasible separations when a 50
foot separation cannot be met.
B. With regards to pump stations serving a single building:
1. Pump stations shall be of a type specifically engineered to be watertight in
floodplain conditions including watertight lids.
2. Wet wells shall be constructed of either high density polyethylene or fiberglass
reinforced polyester resins with all seams thermally welded and factory tested for
leak tightness.
3. All necessary penetrations shall be factory sealed and tested. No field
penetrations will be allowed.
4. The pump station shall be located no further than 50 feet from the building served
and shall be vented back to the building.
5. All pump station wet wells shall maintain a separation of no less than 10 feet from
wetlands.

A.11 t r pump station wet wells shall be located an inirrrra:tn 50
o
?ith regards to manholes:
l'vlanh les shall he provided with a watertight frarrl ar d coy
Al
ankles shall be provided with a hill waterproof interior. e+
Watertight pipe connections shall he provided consisting of
ompression type connector.
manholes shall he tested in accordance with AST
hod for Concrete Sew r Cu anhu S. by theNegativ
prior to actin"
crt; house" type manholi
All holes not included
rticn shall
or
Al
Ce
rr hole seams shall he externally tapeddealed,
s shall not he used.
as part of a I * OI.; 404 Pcrr
am a separation of no lees than 10
orrr wetlands.
with gasket.
atrngar1nrr .
f1e .ihle rubber hoot'
244 "Standard
action))
or livisicrn 401
t 1-om ° Hands