NC0026441_NOV-2020-LV-0587 Response_20200826

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Public works and Utilities AUG 2 6 2020
August 17,2020
Raleigh, NC 27699-161 NCDEQIDWRINPDES
ATTN: Vanessa E. Manuel,Assistant Regional Supervisor
Division of Water Quality
1617 Mail Service Center
Subject: NOTICE OF VOLATION
Tracking Number: NOV-2020-LV-0587
Permit No. NC0026441
Town of Siler City WWTP
Chatham County
Dear Vanessa E. Manuel,
This letter is in response for the NOV issued August 11,2020 for the following parameters for the month of
June,2020.
• BOD, 5—Day weekly limit value=7.5 mg/I Week 1 reported value= 16.1 mg/I, Week 2 reported value =
14.4 mg/I, Week 4 reported value=9.5 m/I Week 5 reported value = 13.1
• BOD, 5- Day Monthly limit value =5.0 mg/I Monthly reported value = 11.5 mg/I
• NH3-N Weekly limit value =3.0 mg/I Week 1 reported value =7.7 mg/I,Week 2 reported value=6.5 mg/I,
Week 4 reported value=3.6 m/I
• NH3-N Monthly limit value= 1.0 Monthly reported value=4.8
It is believed that these violations are a result of continues unpredicted weather conditions that we have been
experiencing over the past few months. We have worked closely with Synagro to stay on top of our Sludge
Management,to include having a portable sludge press here earlier this year and having them come more
frequently. Due to the land conditions from the weather/wet season they have not been able to come as
frequently as we have needed. In result all of our sludge storage basins reached max capacity. We continue to get
supernatant as frequently as conditions allow. Synagro did haul 900,000 gals during the period of June, 23rd to
July, 3rd. This allowed us plenty of room to waste.We are looking into potentially bringing in some dewatering
trailers to help when land applying is not an option. Synagro can bring a sludge press back however this is very
costly for the town. In addition to land applying sludge the dewatering trailers should allow us to better manage
sludge under our current conditions. For the exception of the first week,the month of July did show great

improvement. We will continue to closely monitor the plant process and do what we can to produce quality
Effluent.
If you have any questions, please do not hesitate to contact me.
Sincerely,
Town of iler City WWTP
Brittany York—WWTP Superintendent
Cc: Roy Lynch Town Manager, Chris McCorquodale Public Works& Utility Director
Brittany York
WWTP Superintendent [e-mail]
PO Box 769.311 N Second Avenue Phone:[phone]
Siler City,NC 27344-0769 www.silercity.org
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