WQCS00030_NOV-2021-DV-0120 Response_20210226

PUBLIC UTILITIES
P. O. Box 1111, Statesville, NC 28687-1111
Executive Director PW/City Engineer
Public Works Director
Public Utilities Director
Office Manager
24 February 2021
NC Department of Environmental Quality
Division of Water Resources
Mooresville Regional Office
Attn: Mr. W. Correy Basinger, Regional Supervisor
610 East Center Avenue, Suite 301
Mooresville NC 28115
Subject: NOV-2021-DV-0120 (18 Feb 20)
Reference: WQCS00030
Enclosures: (1) Location Map 616 Crescent Lane
(2) Location Map 354 Twin Oaks Rd
(3) Outfall Inspection Report Twin Oaks Rd (28 Dec 20)
Dear Mr. Basinger:
704 878-3551
704 878-3552
704 761-2383
704 878-3562
RECEIVED/NCDEQ/DWR
FEB 2 6 2021
WQROS
MOORESVILLE REGIONAL OFFICE
This letter is in response to your request for additional information concerning the two SSOs
on January 14th. The two incidents were of short duration and resulted in minimal SSOs.
a. Incident 202100258. Creekbank erosion and subsequent felling of a tree at the location of
the sewer line created a break in the pipe and discharge to an unknown tributary of 4th
Creek. A call received at 1500 on January 14th from the adjacent landfill operator
reported the event. A City crew mobilized and the pipe was plugged by 1630. Repairs
(pipe replacement) were completed by 2100. Dirt and rock were subsequently placed
over the pipe to stabilize the site (approximately 3 feet of cover). This reach of pipe was
routinely inspected on December 28th (enclosure (3)) and no issues were discovered at the
time. Potential contributory rainfall events exceeding 1/10th of an inch post the outfall
inspection of 0.17, 0.47, 0.11, 0.2, and 0.23 inches were recorded for Statesville by the
NWS on January 1, 2, 3, 8, and 9th respectively.
b. Incident 202100259. The cause of the overflow is suspected vandalism at MH TEJ481 (4-
foot depth) consisting of sticks and other debris having been introduced into the manhole.
The subsequent blockage overflowed to an unnamed tributary of 3rd Creek. A resident on
nearby Crescent Lane called in the report at 1607 on January 14th and a City crew was

Subject: NOV-2021-DV-0120 (18 Feb 21)
on site at 1645. The manhole was cleared and the site cleaned (lime deposition, debris
removal) by 1900.
Should you have any further questions regarding these SSO events, please feel free to contact
me at [phone], or email wvaughan@,statesvillenc.net.
Sincerely,
William E. Vaughan, PE
Public Utilities Director
Cc: Mr. A. Scott Harrell, PE, Executive Director PW/City Engineer
Bcc: Mr. Ron Smith, City Manager

ncident # 202100259
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