WQ0024970_Complete File - Historical_20171231

Michael F. Easley, Governor
NC DEp7 07 ; hyilliam G. Ross Jr., Secretary
North Carolina Depar mentrof E,nvLronmegtat d Natural Resources
r3100r; rGregdry`J: Ch�ipe Ph.D.;;/;Ming Director
• Division of Water Quality
Barry Shearin
Charlotte -Mecklenburg Utilities Department
5100 Brookshire Blvd.
Charlotte, NC 28216
Dear Mr. Shearin:
March 8, 2002 MAR 1 9 2002
AIrL ;i i of nay - 4�rcr
1,t 44.) SS,3
Subject: Permit No. WQ0024970
Charlotte -Mecklenburg Utilities Department
Beaverdam Creek Outfall Pump Station and
Force Main
CMU Job No. 153-01-630
Wastewater Collection System
Mecklenburg County
In accordance with your application received November 30, 2001 and additional information received on
February 25, 2002, we are forwarding herewith Permit No. WQ0024970 dated March 8, 2002, to Charlotte -
Mecklenburg Utilities Department for the construction - and operation of the subject wastewater collection
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 This permit shall be effective from the date of issuance until rescinded and shall be subject to the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.
Please pay particular attention to the following permit conditions:
• Permit Condition 2: Construction and operation of this facility shall be in accordance with the project
Environmental Assessment and any special conditions agreed upon for the release of the Finding of
No Significant Impact (FONSI) statement dated September 28, 2001.
• Permit Condition 4: Requires that the wastewater collection facilities be properly operated and
maintained in accordance with 15A NCAC 2H .0227 or any individual system -wide collection system
permit issued to the Permittee.
• Permit Conditions 9 and 10: This permitted system shall not be placed into operation until the
downstream sewer and portion of force main constructed by NC DOT in the I-485 corridor are
properly constructed, tested and certified operable.
Permitting of this project does not constitute an acceptance of any part of the project that does not meet
15A NCAC 2H .0200; the Division of Water QuaIity's (Division) Gravity Sewer Minimum Design Criteria
adopted February 12, 1996 as applicable; 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 specifcalIy 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-Iicensed Professional Engineer
to the licensing board.
Non -Discharge Permitting Unit
1617 Mail Service Center, Raleigh, NC 27699-1617
DENR Customer Service Center
An Equal Opportunity Action Employer
Internet http //h2o.enr.nc.state.us/ndpu
Telephone [phone] Fax [phone]
ATA
KIMENR
Telephone [phone]
50% recycled/10%a post -consumer paper

If any parts, requirements, or lii t bons contained in this permit are unacceptable, you have the right to
request an adjudicatory hearing upon written request within thirty (30) days following receipt of this permit. 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, NC 27699-
6714. Unless such demands are made this permit shall be final and binding.
One set of approved plans and specifications is being forwarded to you. If you need additional
information concerning this matter, please contact Marie Doklovic at (919)/7533-5083 extension 371.
Sincetet
7c7Grego
. Thorpe, PhD,
cc: Mecklenburg County Health Department
Mecklenburg County Department of Environmental Protection
Mooresville Regional ,`Hater Quality Section (McAlpine Creek WWTP)
Scott Hall, PE, Brown & Caldwell
Water Quality Central Files
NDPU Files

priv
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 Department
Mecklenburg County
FOR THE
construction and operation of approximately 3,284 linear feet of 24-inch gravity sewer, 176 linear feet of 30-inch
gravity sewer, a 1,160-GPM pump station @ 295 feet TDH with four sets of two stage pumps (in series) with
surge control (one set for future installation), on -site audible and visual high water alarms, a SCADA system,
permanent diesel engine generator, chemical feed system and water supply well and approximately 12,149 linear
feet of 16-inch force main to serve the Beaverdam Creek service area, and the discharge of 0 GPD of collected
domestic wastewater into Charlotte-Mecklenburg's existing sewerage system (flows allocated in past and future
permits), pursuant to the application received November 30, 2001 and additional information received on
February 25, 2002, and in conformity with the project plan, 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 wastewater collection facilities are constructed in accordance
with the conditions of this permit; 15A NCAC 2H .0200; 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. Construction and operation of this facility shall also be in accordance with the project Environmental
Assessment and any special conditions agreed upon for the release of the Finding of No Significant Impact
(FONSI) statement dated September 28, 2001.
3. This permit is effective only with respect to the nature and volume of wastes described in the application and
other supporting data.
4. 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 I5A NCAC 2H .0227. If an individual permit is not required,
the following performance criteria shall be met as provided in 15A NCAC 2H .0227:
I

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 or the
surface water standards in 15A NCAC 2B .0200.
b. A map of the sewer system shall be developed prior to January 1, 2004 and shall be actively maintained.
c. An operation and maintenance plan shall be developed and implemented.
d. Pump stations that are not connected to a telemetry system shall be inspected every day as defined in
15A NCAC 2B .0503(5). 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 2B .0506(a), and public notice shall be provided as required by North Carolina General
Statute § 143-215.1 C.
5. The sewage and wastewater collected by this system shall be treated in the Charlotte -Mecklenburg Utilities
Department McAlpine Creek Wastewater Treatment Facility (NC0024970) prior to being discharged into
the receiving stream.
6. This permit is not transferable. In the event the facilities to change ownership, or there is a name change of
the Permittee, a formal permit request must be submitted to the Division of Water Quality (Division). This
request shall be accompanied by 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.
7. Construction of the sewerage system 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.
8. Upon completion of construction and prior to operation of these permitted facilities, a certification and a
copy of the construction record drawings shall be received from a North Carolina -licensed Professional
Engineer certifying that the facilities have been installed in accordance with this permit; 15A NCAC 2H
.0200; 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 Main
adopted June 1, 2000 as applicable; 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. A copy of the construction record drawings, indicating the facilities constructed in the phase
being certified, shall be submitted with each partial certification. Mail the Engineer's Certification, one
copy of the "Construction Record Drawings", and one copy of the supporting design calculations to the
Non -Discharge Permitting Unit, 1617 Mail Service Center, Raleigh, NC 27699-1617.
9. This permitted facility shall not be placed into operation until the gravity sewer leading to the ultimate
discharge location (Shopton Rd.) has been property constructed, tested and certified as suitable to properly
transport the waste conveyed by this permitted system.
10. This permitted facility shall not be placed into operation until the portion of force main under the I-485
corridor (constructed by DOT # R-2248) has been properly constructed, tested and certified as suitable to
properly transport the waste conveyed by this permitted system.

11. The Permittee shall provide the following items for the sewerage system:
a. Pump on/off elevations located so that 2-8 pumping cycles may be achieved per hour in the pump
station,
b. An air relief valve located at all high points along the force main,
c. A screened vent for the wet well,
d. Fillets located in the wet well at the intersection of the flooring and side walls,
e. Three feet of cover (minimum) over the sewer line or the use of ferrous material where three feet cannot
be maintained,
f. Sufficient devices which will protect the pump station from vandals,
g. A pump station sign with identifier, emergency contact telephone number and instructions for anyone to
call if the visual alarm illuminates, if the audible alarm sounds or if an emergency is apparent; and
h. Flood protection if the pump station is located below the 100-year flood elevation.
i. Adherence with the following minimum separations:
(i) Storm sewers (vertical) 12 inches
(ii) Water mains (vertical -water over sewer) 18 inches or (horizontal) 10 feet
(iii) In benched trenches (vertical) 18 inches
(iv) Any private or public water supply source, including any WS-I waters or Class I or Class II
impounded reservoirs used as a source of drinking water 100 feet
(v) Waters classified WS (other than WS-I), B, SA, ORW, HQW, or SB [from normal high water (or
tide elevation)] 50 feet
(vi) Any other stream, lake or impoundment 10 feet
(vii) Any building foundation 5 feet
(viii) Any basement 10 feet
(ix) Top slope of embankment or cuts of 2 feet or more vertical height 10 feet
(x) Drainage systems
(I) Interceptor drains 5 feet
(II) Ground water Iowering and surface drainage ditches 10 feet
(xi) Any swimming pool 10 feet
(xii) Ferrous sewer pipe with joints equivalent to water main standards, shall be used where these
minimum separations cannot be maintained. The minimum separation shall however not be less
than 25 feet from a private well or 50 feet from a public water supply well;
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 as may be required by this Division, such
as the construction of additional or replacement wastewater collection facilities.
13. NONCOMPLIANCE NOTIFICATION:
The Permittee shall report by telephone to the Mooresville Regional Office, telephone number (704) 663-
1699, 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.
Persons reporting such occurrences by telephone shall also file a written report in letter form within five (5)
days following first knowledge of the occurrence. This report must outline the actions taken or proposed to
be taken to ensure that the problem does not recur.
3

Permit issued this t8th day of March, 2002.
NORTHROLINA F RONMENTAL MANAGEMENT COMMISSION
4Gregory J. Thorpe, Ph.D., Acting Director
Division of Water Quality
By Authority of the Environmental Management Commission
Permit Number WQ0024970
4

Permit No. WQ0024970
March 8, 2002
ENGINEER'S CERTIFICATION
Partial Final
I, , as a duly registered Professional Engineer in the State of
North Carolina, having been authorized by the Permittee to observe (periodically, weekly, full time) the
construction of the project, Beaverdam Creek Outfall Pump Station and Force Main in Mecklenburg
County, North Carolina 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
and intent of 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, this permit, the approved plans and specifications, and other supporting materials.
Signature Registration No.
Date
The above Engineer's Certification must be completed and submitted to the address below with one (1) copy of
the Record Drawings (i.e., as -constructed plans) of the permitted facilities. This project shall not be considered
complete and allowed to operate until this Engineer's Certification and the Record Drawings have been submitted.
Any wastewater flow made tributary to the permitted facilities prior to completion of this Engineer's Certification
shall be considered a violation of the permit and shall subject the Perrnittee to appropriate enforcement actions.
NORTH CAROLINA DEPARTMENT OF ENVIRONMENT & NATURAL RESOURCES
DIVISION OF WATER QUALITY
WATER QUALITY SECTION
NON -DISCHARGE PERMITTING UNIT
1617 MAIL SERVICE CENTER
RALEIGH, NORTH CAROLINA 27699-1617

FINDING OF NO SIGNIFICANT IMPACT
Environmental Assessment for the
Beaverdam Pumping Station, Gravity Sewer and Force Main
Charlotte -Mecklenburg Utilities, Mecklenburg County
September 28, 2001
An environmental assessment (EA) has been prepared pursuant to the requirements of the
North Carolina Environmental Policy Act, for the proposed Beaverdam Pumping Station,
Gravity Sewer and Force Main in Mecklenburg County. A new gravity sewer interceptor,
pumping station and force main for Charlotte -Mecklenburg Utilities (CMU) in southwestern
Mecklenburg County is proposed for construction. The proposed project includes a pump station
to receive sewage from an outfall and then pump the sewage through a force main out to an
existing sewer line for eventual treatment. The outfall is 2,800 if the force main is 11,600 lf,
with 7,500 if through undeveloped, but highly disturbed woodland, and 4,100 if along existing
road right of way. The pump station (5.5 mgd capacity) is sited just above the floodplain, just
south of the confluence of Beaverdam Creek and Brown's Cove on Lake Wylie. Beaverdam
Creek and two tributaries, along with their associated wetlands, are involved in the project. The
conveyance of this flow to a Charlotte Mecklenburg Utilities wastewater treatment plant
(WWTP) will provide a better quality effluent than would be provided by individual septic
systems.
This project area is located within the Beaverdam Creek basin and can be characterized as a
rural, undeveloped area of Mecklenburg County. This basin is situated above Lake Wylie.
Currently this area utilizes on site septic treatnment in addressing wastewater. This area is
expanding into an area with low -density residential development. Considerable planned
development is expected in this basin during the next ten years.
This project has been designed to minimize environmental impacts. All streams will be
crossed perpendicularly. Special care has been exercised to avoid wetlands. The project will be
permitted under the requirements of the USACE Nationwide 12 permits. The restoration of
stream banks using bioengineering techniques will reduce the impact at all stream crossings. The
streams in the area are listed as being in good condition, and described has having high water
quality. This project will have secondary and cumulative impacts relating to development that
will be supported by this project. These impacts will include loss of forested wildlife habitat as it
is converted into residential housing. However, it is not foreseen that immediate impacts will be
likely resulting from this project.- The applicant is recommending that an inspector be on site at
all times during construction.
Two alternatives were evaluated to convey the future flows predicted for the Beaverdam
Creek basin; (1) Sewage interceptor, pumping station and force main, and (2) No construction of
new facilities (Do nothing alternative). Constructing a new pumping station, force main and
sewer interceptor was chosen as the preferred alternative. This alternative will eliminate the
reliance on onsite septic systems and small community pumping systems in the area. This

alternative provides the highest level of protection against overflows in the system. In addition,
it is the most economical alternative, and allows for a.more efficient treatment of wastewater
yielding a higher quality effluent.
Based on the findings of the EA and on the impact avoidance/mitigation measures contained
therein, it is concluded that the proposed project will not result in significant impacts to the
environment. This EA and Finding of No Significant Impact (FONSI) are prerequisites for the
issuance of the permit actions by the Division of Water Quality. Pending approval by the State
Clearinghouse, the environmental review for this project will be concluded. An environmental
impact statement will not be prepared for this project.
Division of Water Quality
September 28, 2001