NC0085821_NOV-2021-LV-0277 Response_20210503

Public Works
4600 Goldmine Rd
Monroe NC 28110
RECEIVED/NCDEQ/DWR
T. 704-289-1434 MAY - 5 2021
www.unioncountync.gov
May 3, 2021
W. Corey Basinger,
Regional Supervisor
NCDEQ
610 East Center Avenue, Suite 301
Mooresville, NC 28115
Dear Mr. Basinger,
WORDS
MOORESVILLE REGIONAL OFFICE
This letter is in response to NOV-2021-LV-0277, outlining the exceedance in monthly flow that
was experienced at our Grassy Branch WRF in February 2021. This exceedance was a result of
multiple rain events in the system (7.4" for the month) as well as the capacity issues we have
discussed in previous conversations.
In our meeting on 05/02/2019, we detailed our efforts in reducing the I&I that is entering the
Grassy Branch collection system. Since that meeting our Collections team has continued
working to improve the system. Such efforts include:
• Smoke testing
• Camera work and jetting
• Visual inspections during rain events
• Manhole rehab
• Micro -metering
In addition to the I&I reduction, we are in the process of obtaining a SOC agreement with
NCDEQ and Union County in order to expand the plant. This will allow us to better address the
capacity of the WRF to treat the flows.
We intend to continue our efforts finding and reducing the I&I in the Grassy Branch basin even
as we address the treatment/capacity issues at the Grassy Branch WRF. If you have any
questions or concerns please contact me at 704-296-4215.
Sincerely,
t/Lik,h
A'drew 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
sectrtnry
S. DANIEL SMITH
Maxim
Certified Mail # 7018 3090 0001. 2328 4808
Return Receipt Requested
NORTH CAROLINA
Environmental Quality
April 27, 2021
Mark Watson, County Manager
Union County
500 N Main St, Suite 918
Monroe, NC 28112
SUBJECT: NOTICE OF VIOLATION & INTENT TO ASSESS CIVIL PENALTY
Tracking Number: NOV-2021-LV-0277
Permit No. NC0085812
Grassy Branch WWTP
Union County
Dear Mr, Watson:
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 0.104 Monthly Average Exceeded
treatment plant (50050)
A Notice of Violation/Intent to Issue Civil Penalty is being issued for the noted violation of North Carolina General
Statute (G.S.) 143-215.1 and the facility's NPDES WW Permit. Pursuant to G.S. 143-215.6A, a civil penalty of
not more than twenty-five thousand dollars ($25,000.00) may be assessed against any person who violates or
fails to act in accordance with the terms, conditions, or requirements of any permit issued pursuant to G.S.
143-215.1.
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