NC0021491_Authorization to Construct_20071004

Town of Mocksville
A To C No. 021491AO I
Issued April 13, 2006
774i CkrNan5 Creek, WWTP
Engineer's Certification
l ToNa C. Czrte�J, 1a as a duly registered Professional Engineer in
the State of North Carolina, having been authorized to observe periodical weekly/full time)
the construction of the modifications and improvements to the Du c man's Creek WWTP,
located on 295 Garwood Road in Davie County for the Town of Mocksville, hereby state that, to
the best of my abilities, due care and diligence was used in the observation of the following
construction:
A new influent vertical fine screen with a 7 mm opening, three new 1150 gpm
influent pumps, a new 0.34 MG extended aeration basin with two 25-HP surface
aerators, replacement of four 25-HP aerators in two existing aeration basins, a
new 36' diameter clarifier, a new 50' diameter aerobic digestion facility with a
25-HP surface aerator, two new 350-gpm RAS pumps and one new 275-gpm
WAS pump, two new 174-gpm scum pumps, a new chlorination and
dechlorination facility with a 120 scfm blower assembly, and a new 400-KW
emergency generator 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.
We understand that the new limits associated with the modifications to expand to 0.98 MGD
now apply.
Signature C ram— Registration No._ 15401
Date 10[4 f_07
Send to: Construction Grants & Loans
DENR/DWQ
1633 Mail Service Center
Raleigh, NC 27699-1633
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April 13, 2006
Ms. Christine Sanders, Town Manager
Town of Mocksville
171 Clement Street
Mocksville, North Carolina 27028
Michael F. Easley, Governor
William G. Moss Jr.. Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
SUBJECT: Authorization to Construct
ATC No. 021491 AO
Town of Mocksville
Dutchmans Creek WWTP
Davie County
Dear Ms. Sanders:
A letter of request for Authorization to Construct was received February 6, 2006, 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 0.68 MGD Dutchman's Creek Wastewater Treatment Plant, with discharge of treated
wastewater into the Dutchman's Creek River in the Yadkin -Pee Dee River Basin.
This authorization results in an increase in design and permitted capacity to 0.98 MGD,
and is awarded for the construction of the following specific modifications:
A new influent vertical fine screen with a 7 mm opening, three new 1150 gpm
influent pumps, a new 0.34 MG extended aeration basin with two 25-HP surface
aerators, replacement of four 25-HP aerators in two existing aeration basins, a
new 36' diameter clarifier, a new 50' diameter aerobic digestion facility with a
25-HP surface aerator, two new 350-gpm RAS pumps and one new 275-gpm
WAS pump, two new 174-gpm scum pumps, a new chlorination and
dechlorination facility with a 120 scfm blower assembly, and a new 400-KW
emergency generator 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. NCO021491 issued July 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. NCO021491.
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.
One
NplthCarolina
N1741ra!!J
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh. NC 27699-1617 Phone [phone] Customer Service
Internet: 512 N. Salisbury St. Raleigh, NC 27604 FAX [phone]
An Equal Opportunity/Affirmative Action Employer — 50% Recycied110% Post Consumer Paper

Ms. Christine Sanders, Town Manager
April 13, 2006
Page 2
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 [phone], 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 T 15A: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 Dam Safety Act. In addition, the specifications must clearly state what the contractor's
responsibilities shall be in complying with these Acts.
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.

Ms. Christine Sanders, Town Manager
April 13, 2006
Page 3
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].
Since y,
f�
an W. Klimek, P.E.
ID:cgm
Attachment to all
cc: John C. Grey, P.E. — Grey Engineering, Inc., Mocksville, N.C.
Davie County Health Department
DWQ Winston-Salem Regional Office, Surface Water Protection
Technical Assistance and Certification Unit
Daniel Blaisdell, P.E.
Point Source Branch, NPDES Program
Cecil G. Madden, Jr., P.E.
Ishwar Devkota, P.E.
A to C File