WQCS00054_NOV-2020-DV-0522 Response_20201208

Public Works
500 North Main Street
Suite # 600
Monroe, NC 28112
T. 704-296-4210
December 8, 2020
Mr. W. Corey Basinger
Regional Supervisor
Water Quality Regional Operations Section
Mooresville Regional Office
610 East Center Ave., Suite 301
Mooresville, NC 28115
Subject: Notice of Violation
Tracking #: NOV-2020-DV-0522
Sanitary Sewer Overflows — October 2020
Collection System Permit — WQCS00054
Union County
Dear Mr. Basinger:
DEC 0 2020
Union County has received the NOV referenced above for collection system overflows.
Explanations of the overflows were on the BIMS Overflow Reporting Forms submitted by Union
County Public Works (UCPW) to the NCDEQ. However, we have added a few additional facts
in the explanations below.
Incident # Date Location
202002765 10/11/2020 2706 Bobwhite Circle
Response:
The SSO listed in this section was due to a Grease accumulation and debris in the pipeline. Our
Industrial Pretreatment Program Manager was notified and further investigations took place of
the entire zone. Educational Material was distributed and this area will be monitored. Cleaning
in this area has been increased as -well.
Incident # Date Location
202002815 10/19/2020 6600 Stoney Creek Drive
Response:
The SSO listed in this section was due to a pump station failure. The automatic transfer switch
at the station failed to return to the normal position after an automatic weekly generator test.
The station then lost power and overflowed prior to power being restored. The ATS was tested
several times with no recurrence.

Incident # Date Location
202002822 10/20/2020 8200 Kensington Drive
Response:
The SSO listed in this section was due to a force main hit by a paving contractor. The contractor
struck the force main with a backhoe bucket on an expired locate. Staff immediately shut the
station down while wastewater entered a temporary sediment pond. A bypass was setup and
wastewater was then pumped back into sewer gravity main.
UCPW also has an aggressive Capital Improvement Program throughout the next 5 years. The
projects include:
Crooked Creek Basin Improvements - $23,900,000
➢ Suburban Estates PS and FM - $1,000,000.00
➢ Waxhaw Interceptor —$5,400,000
➢ WW PS Improvements - $3,500,000
UCPW's ongoing CIP projects include:
➢ Blythe Creek Sewer Improvements - $6,200,000
➢ Forest Park PS Replacement & Interceptor Improvements - $3,345,000
➢ Crooked Creek I&I Study & Remediation - $476,000
Union County Public Works continues to invest in SSES work, capital improvements,
maintenance, FOG, and operations to improve the wastewater collection system. If further
information or details regarding the SSOs in this NOV are needed, please contact Greg Morgan,
Superintendent/ORC, at 704-289-3288 or myself at 704-296-4215.
Thank you for your consideration on this issue.
Sincerely,
Andrew Neff, PE
Water/Wastewater Division Director
cc: Hyong Yi, Public Works Administrator
Josh Brooks, Assistant Director, Water/Wastewater Operations
Greg Morgan, Utility Field Services Superintendent/ORC