WQ0031506_NOV 2023 MV 0115_20230626

Certified Mail # 7020 3160 0000 2219 4911
Return Receipt Requested

June 26, 2023

Todd Taylor
Orange Water and Sewer Authority
400 Jones Ferry Rd
Carrboro, NC 27510-2001

SUBJECT: NOTICE OF VIOLATION & INTENT TO ASSESS CIVIL PENALTY
Tracking Number: NOV-2023-MV-0115
Permit No. WQ0031506
Mason Farm WWTP
Orange County

Dear Permittee:

A review of the February 2023 Non-Discharge Monitoring Report (NDMR) for the subject facility revealed the
violation(s) indicated below:

Monitoring Violation(s):
Sample Monitoring
Location Parameter Date Frequency Type of Violation _________________________________________________________________________________________________________________________________________________________________________
001 Turbidity, HCH Turbidimiter (00076) 2/13/2023 Continuous Frequency Violation _________________________________________________________________________________________________________________________________________________________________________
001 Turbidity, HCH Turbidimiter (00076) 2/14/2023 Continuous Frequency Violation _________________________________________________________________________________________________________________________________________________________________________
001 Turbidity, HCH Turbidimiter (00076) 2/15/2023 Continuous Frequency Violation _________________________________________________________________________________________________________________________________________________________________________
001 Turbidity, HCH Turbidimiter (00076) 2/16/2023 Continuous Frequency Violation _________________________________________________________________________________________________________________________________________________________________________
001 BOD, Carbonaceous 05 Day, 20 C 2/18/2023 2 X week Frequency Violation
(80082) _________________________________________________________________________________________________________________________________________________________________________
001 Coliform, Fecal MF, MFC Broth, 2/18/2023 2 X week Frequency Violation
44.5 C (31616) _________________________________________________________________________________________________________________________________________________________________________
001 Nitrogen, Ammonia Total (as N) 2/18/2023 2 X week Frequency Violation
(00610) _________________________________________________________________________________________________________________________________________________________________________
001 Solids, Total Suspended (00530) 2/18/2023 2 X week Frequency Violation _________________________________________________________________________________________________________________________________________________________________________
001 Turbidity, HCH Turbidimiter (00076) 2/18/2023 Continuous Frequency Violation _________________________________________________________________________________________________________________________________________________________________________
DocuSign Envelope ID: CBFCC7B1-0B55-4952-8666-4DC54842B902

A Notice of Violation/Intent to Issue Civil Penalty is being issued for the noted violation of North Carolina General
Statute (G.S.) 143-215.1 and the facility’s Non-discharge Permit. Pursuant to G.S. 143-215.6A, a civil penalty of
not more than twenty-five thousand dollars ($25,000.00) may be assessed against any person who violates or
fails to act in accordance with the terms, conditions, or requirements of any permit issued pursuant to G.S.
143-215.1.

If you wish to provide additional information regarding the noted violation, request technical assistance, or
discuss overall compliance please respond in writing within ten (10) business days after receipt of this Notice. A
review of your response will be considered along with any information provided on the submitted Monitoring
Report(s). You will then be notified of any civil penalties that may be assessed regarding the violations. If no
response is received in this Office within the 10-day period, a civil penalty assessment may be
prepared.

Remedial actions should have already been taken to correct this problem and prevent further occurrences in the
future. The Division of Water Resources may pursue enforcement action for this and any additional violations of
State law. If the violations are of a continuing nature, not related to operation and/or maintenance problems,
and you anticipate remedial construction activities, then you may wish to consider applying for a Special Order by
Consent.

Reminder: Pursuant to Permit Condition 6 in Section E, the Permittee is required to verbally notify the Regional
Office as soon as possible, not to exceed 24 hours, from first knowledge of any non-compliance at
the facility including limit violations, bypasses of, or failure of a treatment unit. A written report may
be required within 5 days if directed by Division staff. Prior notice should be given for anticipated or
potential problems due to planned maintenance activities, taking units off-line, etc.

If you have any questions concerning this matter or to apply for an SOC, please contact Dorothy Robson of
the Raleigh Regional Office at 919-791-4200.

Sincerely,

Vanessa E Manuel, Assistant Regional Supervisor
Water Quality Regional Operations Section
Raleigh Regional Office
Division of Water Resources, NCDEQ

Cc: WQS Raleigh Regional Office - Enforcement File
NON-DISCHARGE Laserfiche
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