NC0062481_Response to Notice_20220214

RECEIVED/NCDEQ/DWR
Aqua North Carolina, Inc.
4163 Sinclair Street
Denver, NC 28037
February14, 2022
Mr. Wes Bell
Water Quality Regional Operations Section
Division of Water Resources, NCDEQ
610 East Center Avenue, Suite 301
Mooresville, NC 28115
Re: Mallard Head Condos WWTP, Iredell County
Compliance Evaluation Inspection
NPDES Permit No. NC0062481
Dear Mr. Bell:
FEB L 4 1O 2
WQROS
MO©RESVILLE REGIONAL OFFICE
www.aquanorthcarolina.com
Aqua North Carolina, Inc. (Aqua) offers the following response to the above -referenced Compliance Evaluation
Inspection which was issued for the inspection conducted on January 13, 2022.
Per CEI, Aqua should respond to:
A majority of the bar screen is submerged in the aeration basin and ineffective at removing paper debris, etc.
It is requested that a written response be submitted...addressing the actions taken to address the ineffective
bar screen.
Aqua's Response: The existing single train treatment plant was constructed per NC DEQ approved plans
and specifications. This installation is decades old and to our knowledge there has not been any non-
compliance event related to the bar screen. If NC DEQs engineer finds that the bar screen as installed does
not meet applicable design guidelines, then it is probably most appropriate that NC DEQs engineer contact
the design engineer and specify the error or omission. If Aqua determines that operationally this bar screen
is causing a potential compliance issue, then Aqua will take actions as necessary to remove the risk.
If you have any questions or comments, please do not hesitate to contact Laurie Ison at [phone].
Sincerely,
Laurie Ison
cc: Joseph Pearce, P.E.
An Aqua America Company