NC0024228_authorization to construct_20070817

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August 17, 2007
Mr. Terry Houk
Assistant Public Service Director
City of High Point
PO Box 230
High Point, North Carolina 27261
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Coleen H. Sullins, Director
Division of Water Quality
SUBJECT: Authoriziation to Construct
A to C No. 024228A01
City of High Point
Westside WWTP
Davidson County
Dear Mr. Houk:
A letter of request for Authorization to Construct was received April 10, 2007, by the
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 6.2 MGD Wastewater Treatment Plant, with discharge of treated wastewater into Rich
Fork Creek in the Yadkin -Pee Dee River Basin.
This authorization results in no increase in design or permitted capacity and is awarded
for the construction of the following specific modifications:
A new preliminary treatment unit, to include a 10 mgd coarse mechanical bar screen, dual
bypass coarse bar screens, an influent pump station consisting of one (1) 15 mgd pump
and two (2) 7.5 mgd pumps, three (3) Parshall Flumes, dual 10 mgd vortex grit removal
systems; a 14,000 scfm odor control system, including dual 7-foot diameter air scrubber
towers, a 10,000 gallon sodium hypochlorite storage tank with feed system and a 10,000
sodium hydroxide storage tank with feed system; renovation of existing sludge holding
tanks Nos. 1 and 2 (0.75 MG each), to include installation of a jet aeration/mixing system
into each tank, with each tank aeration system consisting of a 4,800 gpm pump and 12 jet
nozzles rated at 400 gpm each and air piping, dual 400 scfm blowers for aeration, and
dome covers with odor -venting piping; a sludge -loading truck station with 800 gpm
sludge pump; and associated yard piping, in conformity with the project plans,
specifications, and other supporting data subsequently filed and approved by the
Department of Environment and Natural Resources.
The new preliminary treatment unit is rated for a design flow of 10 mgd and a peak flow
of 30 mgd with the exception of the influent pumps, which have a firm capacity of
approximately 15 mgd. The WWTP design flow remains at 6.2 mgd, and the influent pump
station may only be expanded after receipt of an NPDES permit with a higher flow rate and a
corresponding Authorization to Construct.
e hCarolina
NyNaturally
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phone [phone] Customer Service
Internet: : r ;;a '. „ 512 N. Salisbury St. Raleigh, NC 27604 FAX [phone]
An Equal Opportunity/Affirmative Action Employer — 50% Recycled/10% Post Consumer Paper

Mr. Terry Houk
August 17, 2007
Page 2
This Authorization to Construct is issued in accordance with Part III, Paragraph A of
NPDES Permit No. NC0024228 issued September 15, 2005, and shall be subject to revocation
unless the wastewater treatment facilities are constructed in accordance with the conditions and
limitations specified in Permit No. NC0024228.
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 North Carolina Division of Water Quality.
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
treatment or disposal facilities.
The Winston-Salem Regional Office, telephone number (336) 77.1-5000, 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 Cecil G. Madden, Jr., P.E.,
Construction Grants & Loans, DWQ / DENR, 1633 Mail Service Center, Raleigh, NC 27699-
1633.
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.

Mr. Terry Houk
August 17, 2007
Page 3
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 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 of Water. Quality 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.
One (1) set of approved plans and specifications is being forwarded to you. If you have
any questions or need additional information, please contact Cecil G. Madden, Jr., P.E. at
telephone number [phone].
' Coleen H. Sullins/
kp:cgm
cc: C. Todd Johnson, P.E. — Hazen and Sawyer, P.C., Raleigh
Davidson County Health Department
DWQ Winston-Salem Regional Office, Surface Water Protection
DWQ, Technical Assistance and Certification Unit
DWQ Point Source Branch, NPDES Program
Daniel Blaisdell, P.E.
Cecil G. Madden, Jr., P.E.
Ken Pohlig, P.E.
ATC File