NC0085359_Authorization to Construct_20070417

April 17, 2007
Ms. Christie Putnam, P.E.
Public Works Director
Union County Public Works Department
400 North Church Street
Monroe, North Carolina 28112-404
Michael F. Easley, Governor
William G. Ross Jr., Secretary
North Carolina Department of Environment and Natural Resources
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Alan W. Klimek. Y.E. Director
Division of Water Quality
2 3 2007
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SUBJECT: Rerating of Capacity
A to C No. 085359A03
Union County
Twelve Mile WWTP Expansion
Project No. CS370370-09
Dear Ms. Putnam:
A letter of request for Rerating of Capacity was received on December 1, 2006, by the
Division. Final plans and specifications for the subject project have been reviewed and found to
be satisfactory. Authorization is hereby granted for the rerating of the existing 2.5 MGD
Wastewater Treatment Plant, with discharge of treated wastewater into Twelve Mile Creek in the
Catawba River Basin.
This rerating results in an increase in design and permitted capacity to 3.0 MGD, is
effective starting April 1, 2007, and is awarded based on supporting engineering calculations and
the engineer's certification that the following specific modifications have been completed:
• Expansion of the influent pump station to a firm capacity of 15 MGD,
• One new MLSS distribution box,
• Two new 85-foot diameter secondary clarifiers,
• New RAS and WAS pump stations,
• One new 1 MG aerobic digester, and
• New standby power facilities
pursuant to the application received on December 1, 2006, 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 Rerating of Capacity is issued in accordance with Part III, Paragraph A of NPDES
Permit No. NC0085359 issued November 27, 2006, and shall be subject to revocation unless the
wastewater treatment facilities are constructed in accordance with the conditions and limitations
specified in Permit No. NC0085359.
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NCarolina
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North Carolina Division of Water Quality 1617 Mail Service Center Raleigh. NC 27699-1617 Phone [phone] Customer Service
Internet: r.:. r .re;aaterGuwav orq 512 N. Salisbury St. Raleigh. NC 27604 FAX [phone]
An Equal Opportunity/Affirmative Action Employer — 50% Recycled/10% Post Consumer Paper

Ms. Christie Putnam
April 17, 2007
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.
Upon classification of the wastewater treatment facilities by the Water Pollution Control
System Operators Certification Commission (WPCSOCC), the Permittee shall designate and
employ a certified operator to be in responsible charge (ORC) and one or more certified
operator(s) to be back-up ORC(s) of the facilities in accordance with 15A NCAC 8G .0201. The
ORC shall visit the facilities in accordance with 15A NCAC 8G .0204 or as specified in this
permit and shall comply with all other conditions specified in these rules.
A copy of the approved plans and specifications shall be maintained on file by the
Permittee for the life of the facility.
Failure to abide by the requirements contained in this rerating 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 rerating 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
Cecil G. Madden, Jr., P.E. at telephone number [phone].
MM:cgm
cc: James N. Struve , P.E., Hazen & Sawyer, Charlotte Office
Union County Health Department
DWQ Mooresville 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.
Michelle McKay
SRF

[Fwd: Union County 12 Mile Creek WWTP NC0085359]
Subject: [Fwd: Union County 12 Mile Creek WWTP NC0085359]
From: Bob Sledge <[e-mail]>
Date: Wed, 19 Dec 2007 12:11:13 -0500
To: Tom Belnick <[e-mail]>
-
Subject: Union County 12 Mile Creek WWTP NC0085359
From: Cecil Madden <[e-mail]>
Date: Wed, 19 Sep 2007 17:08:00 -0400
To: Coleen Sullins <[e-mail]>, Chuck Wakild <[e-mail]>, Deborah
Gore <[e-mail]>, Paul Rawls <[e-mail]>, Susan Wilson
<[e-mail]>, Rob Krebs <[e-mail]>, Bob Sledge
<[e-mail]>, [e-mail], [e-mail]
CC: Bobby Blowe <[e-mail]>, Daniel Blaisdell <[e-mail]>
Hello All,
On September 11, 2007, the professional engineer, Jim Struve signed a certification
indicating that the WWTP had been constructed in accordance with the approved plans
and specifications. The transmittal had some minor exclusions. I discussed the
minor exclusions with the engineer today. Based on his certification and our
conversation, I am confident that the new limits associated with the 6 MGD capacity
.should be implemented as of the date on the certification which is September 11,
2007. The ATC data in BIMS has been updated to indicate receipt of the engineering
certification on September 14, 2007.
Please advise if you have further questions regarding this email.
Regards,
Cecil G. Madden, Jr., P.E.
[phone]
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