NC0026573_NOVNOI-2023-LV-0529_resp_20230801

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City of Morganton
Water Resources Department
August 1", 2023
Daniel Boss, Assistant Regional Supervisor
Water Quality Regional Operations Section
Asheville Regional Office
Division of Water Resources, NCDEQ
Subject: NOV Response to NOV-2023-LV-0529
Dew Mr. Boss,
We have reviewed the pennit violation NOV-2023-LV-0529 for Permit #NC0026573.
The cause of the violations is hydraulic overloading due to excessive flow from infiltration from
heavy rain. Nearly 4 inches of rain fell in Morganton area on June 20'", with 5.4 inches recorded
over 3 day period at POTW. Flash flood advisories and watches were issued for the Burke
County. POTW filled all available peak storage during the beginning hours of high flows of 20
MOD spanning several hours. Once peak storage was filled, POTW was unable to maintain
secondary sludge levels from the excess flow, causing, hydraulic overloading through the
afternoon until the night once high flows subsided. NCDEQ was notified by email later in the
week once lab results were concluded.
Contractors concluded 24,370 feet of root control treatment for collections system in Jane
but no major issues were found. Currently the City of Morganton Water Resources is conducting
engineering studies of POTW & solids handling capacities and further investigations into
infiltration is being discussed.
If there is any questions or if more information is needed, please reach me at
828-438-5375 or at ESelf MorgantonNC.eov
Sincerely,
Vin1ce_ 1
Eli Self
Wastewater Plant Superintendent & ORC
City of Morganton, NC
Telephone [phone] East Union St. Post Office Box 3448
www.moreantonNC.eov Morganton, NC 28655 Morganton, NC 28680-3448