NC0026441_NOV-2023-LV-0631_Resp Rvd_20231019

F erL
Town of 6iler Citp
Public works and Utilities
October 11, 2023
Attn: Vanessa E. Manuel, Assistant Regional Supervisor
1617 Mail Service Center
Raleigh, NC 27699-1617
RECEIVED
OCT 17 2023
NC DEQ/DWR
Central Office
Subject: NOTICE OF VIOLATION & INTENT TO ASSESS CIVIL PENALTY
Tracking Number: NOV-2023-LV-0631
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NPDES Permit # NCO026441
Town of Siler City
Chatham County
Dear Vanessa E. Manuel
This letter is in response to the NOV & Intent for Civil Penalty issues on September 14, 2023, foi'
exceeding the following parameters for July 2023:
Sample Limit Reported Type of
Location Parameter Date Value Value Violation
001 Effluent Coliform, Fecal MF, NEC 7/8/2023 400 738.95 Weekly Geometric Mean Exceeded
Broth, 44.5 C (31616)
001 Effluent Coliform, Fecal MF, MFC 7/15/2023 400 701.33 Weekly Geometric Mean Exceeded
Broth, 44.5 C (31616)
The reason we exceeded the fecal for the weeks above is because we were having issues with our Chlorine feed
system. We called in Eric Howe with Piedmont Chlorinators to help us determine what was going on. After a complete
overall of our feed system, we were able to determine that we didn't have much vacuum due to a collapse or damaged
line in the system leaving the chemical building on our existing line. We laid a temporary line as we replaced about
400 ft of line and placed it back online. We have since added a secondary feed line to feed at a different location if
this happens again in the future.
X9
Sincerely,
Brittany York, WWTP Superintendent, Siler City
Cc: Hank Raper — Town Manager, Chris McCorquodale— Utility Director
Brittany York Brittany York
W WTP Superintendent [e-mail]
PO Box 769.311 N Second Avenue Phone: [phone]
Siler City, NC 27344-0769 www.sliercity.org

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