NC0085821_NOV-2021-LV-0279 Response_20210503

Public Works
4600 Goldmine Rd
Monroe NC 28110 RECEIVED/NODE►'
j T. 704-289-1434 MAY - 5 2021
www.unioncountync.gov WOROS
MOORESVILLE REGIONAL OFFICE
May 3, 2021
W. Corey Basinger,
Regional Supervisor
NCDEQ
610 East Center Avenue, Suite 301
Mooresville, NC 28115
Dear Mr. Basinger,
This letter is in response to NOV-2021-LV-0279, outlining the exceedance in monthly flow that
was experienced at our Tallwood WRF in February 2021. This exceedance was a result of
damage in the collections system, as well as higher than normal rain flows (5.0").
In early February 2021, the WRF staff notified collections system staff of higher -than -normal
flows being experienced at the WRF. Collections staff began an investigation consisting of
smoke testing and manhole inspections. Findings included multiple defects which have since
been addressed. A list of repairs includes:
• Repair/replace several clean -out caps.
• Repair of broken stand pipe.
• Grouted leaking cone on a manhole.
Since these repairs were performed, WRF staff have seen a noticeable decrease in flows to
the plant. March ADF is down to 0.048 mgd, and April ADF is down to 0.023 mgd.
We will continue our efforts finding and reducing the l&I in the Tallwood basin. If you have
any questions or concerns please contact me at 704-296-4215.
li
Andrew Neff, PE
Water & Wastewater Division Director
Cc: Hyong Yi, Public Works Administrator
Josh Brooks, Asst. Div. Director, Water & Wastewater
Bart Farmer, WRF Superintendent
Greg Morgan, Utility Services Superintendent

ROY COOPER
Governor
DIONNE DELLI-GATTI
Secretary
S. DANIEL SMITH
Director
Certified Mail # 7018 3090 0001 2328 4808
Return Receipt Requested
Mark Watson, County Manager
Union County
500 N Main Street, Suite 918
Monroe, NC 28112
SUBJECT: NOTICE OF VIOLATION
Tracking Number: NOV-2021-LV-0279
Permit No. NC0069523
Tallwood Estates WWTP
Union County
Dear Mr. Watson:
NORTH CAROLINA
Environmental Quality
April 27, 2021
A review of the February 2021 Discharge Monitoring Report (DMR) for the subject facility revealed the
violation(s) indicated below:
Limit Exceedance Violation(s):
Sample Limit Reported
Location Parameter Date Value Value Type of Violation
001 Effluent Flow, in conduit or thru 2/28/2021 0,05 0,072 Monthly Average Exceeded
treatment plant (50050)
Remedial actions, if not already implemented, should be taken to correct any noted problems. The Division of
Water Resources may pursue enforcement actions for this and any additional violations. If the violations are of a
continuing nature, not related to operation andjor maintenance problems, and you anticipate remedial
construction activities, then you may wish to consider applying for a Special Order by Consent (SOC),
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