NC0055786_Response to Notice_20231012

r �
LEXINGTON
NORTH CAROLI NA
WATER RESOURCES
QUALITY FIRST
October 12th, 2023
Response to Notice of Violation with Intent to Assess Civil Penalty
Tracking Number: NOV-2023-LV-0471
Permit # NCO055786
Lexington Regional WWTP
To: Jennifer Gramak
Dear Jennifer,
Although this response to NOV-2023-LV-0471 is passed the 10-day period to respond, The City
of Lexington humbly requests consideration of this letter as further action is considered. In the
Month of April 2023, both BOD and Nh3N weekly and monthly limits were exceeded.
At the time of the submittal of the DMR the exceedances were believed to have been attributed
to the fact that staff had one of the two Final Clarifiers out of service and drained for
maintenance and repairs. While this likely did play a factor, we have now determined that the
problem was in the Aeration system on Train A. This took several months to determine and
correct. The repairs to the Aeration System were finally completed late August and since
September the Plant is maintaining compliance and running very well.
As a result of the problems discovered in Aeration Train A, staff is currently ordering parts and
lining up equipment to address Aeration Train B as soon as possible to avoid another exceedance
event.
Sincerely,
Tom John , Water Resources Director
Water Resources - Public Works - Engineering
28 West Center Street- Lexington, NC 27292 - 336.248-3930
www.LEXINGTONNC.GOv