NC0050342_Authorization to Construct_20051209

NPDES DOCUMENT SCANNING COVER SHEET
NC0050342
Muddy Creek WWTP
NPDES Permit:
Document Type:
Permit Issuance
Wasteload Allocation
Authorization to Construct (AtC)
Permit Modification
Complete File - Historical
Engineering Alternatives (EAA)
Correspondence
Owner Name Change
Instream Assessment (67b)
Speculative Limits
Environmental Assessment (EA)
Document Date:
December 9, 2005
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coznterit oa the reirerse side

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Mr. Ron Hargrove
A To C Number 050342A01
Issued December 17, 2004
Engineer's Certification
I, 64 -ezcs -D , as a duly registered Professional Engineer in
the State of North Carolina, having been authorized to observe Q.eriodica weekly/full time)
the construction of the modifications and improvements to the Muddy Creek WWTP, located in
Forsyth County for the City of Winston Salem, hereby state that, to the best of my abilities, due
care and diligence was used in the observation of the following construction:
• Aeration Basin modifications consisting of the replacement of the existing diffusers with
fine bubble membrane disc type diffusers in all three aeration basins, and new dissolved
oxygen probes in all basins; and
• A gravity -fed lime slurry system consisting of a mixer and slurry tank, a feed/lime screw
feeder, and a SCADA system controller,
pursuant to the application received on August 30, 2004, and in conformity with the project plan,
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 . -S' Registration No. CD2-. 3 s
Date 12-4 o q / Z oo S
Send to:
Construction Grants & Loans
DENR/DWQ
1633 Mail Service Center
Raleigh, NC 27699-1633

Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
Alan W. Klimek, P.E. Director
Division of Water Quality
December 17, 2004
Mr. Ron Hargrove, Project Manager
Winston-Salem/Forsyth County Utilities Commission
P. O. Box 2511
Winston-Salem, NC 27102
SUBJECT: Authorization to Construct
A to C No. 050342A01
Winston-Salem/Forsyth County
Utilities Commission
Muddy Creek WWTP
Dear Mr. Hargrove:
A letter of request for Authorization to Construct was received August 30, 2004 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 21 MGD Muddy Creek Wastewater Treatment Plant, with discharge of treated
wastewater into the Yadkin River 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 two specific modifications:
• Aeration basin modifications consisting of the replacement of the existing diffusers with
fine bubble membrane disc type diffusers in all three aeration basins, and new dissolved
oxygen probes in all basins; and
• A gravity -fed lime slurry system consisting of a slurry tank and mixer, a screw feeder,
and a SCADA system controller,
pursuant to the application received on August 30, 2004, and in conformity with the project plan,
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. NC0050342 issued August 1, 2004, and shall be subject to revocation unless
the wastewater treatment facilities are constructed in accordance with the conditions and
limitations specified in Permit No. NC0050342.
Vone N r Carolina
iurally
North Carolina Division of Water Quality 1617 Mail Service Center Raleigh, NC 27699-1617 Phone [phone] Customer Service
Internet: h2o.enr.state.nc.us 512 N. Salisbury St. Raleigh, NC 27604 FAX [phone]
An Equal Opportunity/Affirmative Action Employer — 50% Recycled/10% Post Consumer Paper

Mr. Ron Hargrove
December 17, 2004
Page 2
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 [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. Please 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.

Mr. Ron Hargrove
December 17, 2004
Page 3
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].
77
GTV: cgm
Sincerely,
Alan W. Klim k, P.E.
cc: HDR Engineering, Inc. of the Carolinas
Forsyth County Health Department
Winston-Salem Regional Office, Surface Water Protection
Technical Assistance and Certification Unit
Daniel Blaisdell, P.E.
SWP-PSB
Cecil G. Madden, Jr., P.E.
Gil Vinzani, P.E.