NC0071242_A to C 2014_20141117

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NCDENR
North Carolina Department of Environment and Natural Resources
Pat McCrory John E. Skvarla, III
Governor Secretary
November 17, 2014
Martin Lashua
Vice President of Operations
Carolina Water Service Inc. of NC
P. O. Box 240908
Charlotte,North Carolina 28224-0908
SUBJECT: Authorization to Construct
A to C No. 071242A03
Carolina Water Service Inc. of NC
Riverpointe Subdivision WWTP
Dear Mr. Lashua:
A letter of request for an Authorization to Construct was received October 29, 2014, by the
Division of Water Resources (Division), and final plans and specifications for the subject project
have been reviewed and found to be satisfactory. Authorization is hereby granted for the
construction of modifications to the existing 0.050 MGD Riverpointe Subdivision WWTP, with
discharge of treated wastewater into the Catawba River(Lake Wylie) in the Catawba River Basin.
This authorization results in no increase in design or permitted capacity and is awarded for
the construction of the following specific modifications:
Installation of one (1) new 12.5 ft diameter clarifier with air lift pumps for scum and
sludge transfer, piping, and controls; removal of surplus blower and installation of one
(1) new 534 CFM at 6.2 PSI blower, piping, and controls; repurposing of existing
17,600 gallon rectangular clarifier as a backup extended aeration tank with the
addition of a new distributed box, piping, and controls; repurposing of existing 7,380
gallons sludge storage to be incorporated as part of the existing extended aeration
treatment tank, piping, and controls; repurposing of the existing 30,720 gallon
anaerobic sludge storage tank (formerly back up/second clarifier) as an aerobic
digester/ storage tank, piping, and controls; in conformity with the project plans,
specifications, and other supporting data subsequently filed and approved by the
Department of Environment and Natural Resources.
This Authorization to Construct is issued in accordance with Part III, Paragraph A of
NPDES Permit No.NC0071242 issued effective August 1, 2010, and shall be subject to revocation
1617 Mail Service Center,Raleigh,North Carolina 27699-1617
Phone:[phone] Internet:www.ncwaterquality.org
An Equal Opportunity\Atfirmative Action Employer

Martin Lashua,Vice President of Operations •
November 17,2014
Page 2 of 3
unless the wastewater treatment facilities are constructed in accordance with the conditions and
limitations specified in Permit No.NC0071242.
The sludge generated from these treatment facilities must be disposed of in accordance with
G.S. 143-215.1 and in a manner approved by the Division.
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 the Division, such as the construction of additional or replacement wastewater
treatment or disposal facilities.
The Mooresville Regional Office, telephone number (704) 663 - 1699, shall be notified at
least forty-eight (48) hours in advance of operation of the installed facilities so that an on site
inspection can be made. Such notification to the regional supervisor shall be made during the
normal office hours from 8:00 a.m. until 5:00 p.m. on Monday through Friday, excluding State
Holidays.
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 the NPDES Permit, this Authorization to Construct and the
approved plans and specifications. Mail the Certification to: NPDES Unit, DWR/DENR, 1617
Mail Service Center, Raleigh,NC 27699-1617.
Upon classification of the facility by the Certification Commission, the Permittee shall
employ a certified wastewater treatment plant operator to be in responsible charge (ORC) of the
wastewater treatment facilities. The operator must hold a certificate of the type and grade at least
equivalent to or greater than the classification assigned to the wastewater treatment facilities by the
Certification Commission.
The Permittee must also employ a certified back-up operator of the appropriate type and
grade to comply with the conditions of T15A:8G.0202. The ORC of the facility must visit each
Class I facility at least weekly and each Class II, III and IV facility at least daily, excluding
weekends and holidays, must properly manage the facility, must document daily operation and
maintenance of the facility, and must comply with all other conditions of T15A:8G.0202.
A copy of the approved plans and specifications shall be maintained on file by the
Permittee for the life of the facility.
During the construction of the proposed additions/modifications, the permittee shall continue to
properly maintain and operate the existing wastewater treatment facilities at all times,and in such a
manner, as necessary to comply with the effluent limits specified in the NPDES Permit.
You are reminded that it is mandatory for the project to be constructed in accordance with
the North Carolina Sedimentation Pollution Control Act, and when applicable, the North Carolina

" ,.Martin Lashua,Vice President of Operations
November 17,2014
Page 3 of 3
Dam Safety Act. In addition, the specifications must clearly state what the contractor's
responsibilities shall be in complying with these Acts.
Prior to entering into any contract(s) for construction, the recipient must have obtained all
applicable permits from the State.
Failure to abide by the requirements contained in this Authorization to Construct 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.
The issuance of this Authorization to Construct does not preclude the Permittee from
complying with any and all statutes, rules, regulations, or ordinances which may be imposed by
other government agencies(local, state, and federal)which have jurisdiction.
If you have any questions or need additional information, please contact Ron Berry at
telephone number(919) 807-6396.
12Svpx.,
incerely
-
Th 9 r as A. ee er, 'rector
Division of Water
Resources/NCDENR
cc: Dale C. Stewart,P.E.
LandDesign
223 North Graham Street
Charlotte,NC 28202
DWR/Mooresville Regional Office, Water Quality Programs
Central Files
NPDES File
Without Engineer's Certificate attached:
Mecklenburg County Health Department

Carolina Water Service Inc. of NC
Riverpointe Subdivision WWTP
Authorization to Construct No. 071242A03
Issued November 17, 2014
Engineer's Certification
I, , 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 modifications and improvements to the Riverpointe Subdivision
Wastewater Treatment Plant, located in Mecklenburg County,hereby state that,to the best of my
abilities, due care and diligence was used in the observation of the following construction:
Installation of one (1) new 12.5 ft diameter clarifier with air lift pumps for scum
and sludge transfer, piping, and controls; removal of surplus blower and
installation of one (1) new 534 CFM at 6.2 PSI blower, piping, and controls;
repurposing of existing 17,600 gallon rectangular clarifier as a backup extended
aeration tank with the addition of a new distributed box, piping, and controls;
repurposing of existing 7,380 gallons sludge storage to be incorporated as part of
the existing extended aeration treatment tank,piping, and controls; repurposing of
the existing 30,720 gallon anaerobic sludge storage tank (formerly back
up/second clarifier) as an aerobic digester/ storage tank, piping, and controls; 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, intent and in conformity with all applicable regulations and statutes and
the project plans, specifications,and other supporting documentation comprising the
Authorization to Construct Permit Application package.
Signature Registration No.
Date
Mail this Certification to: Attn: Ron Berry SEAL
Complex Permitting Unit
DENR/DWR/Water Quality Programs
1617 Mail Service Center
Raleigh,NC 27699-1617