NC0026051_NOV-2024-LV-0800_20240913

Docusign Envelope ID: 405065B5-56FF-499B-AB29-63A6900B58CF
ROY COOPER
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ELIZABETH S. B1SER
Secrnrary
R[CHARD E. ROGERS, JR.
NORTH CAROLINA
Director
Environmental Quality
Certified Mail # 7020 3160 0000 4115 1193
Return Receipt Requested
September 13, 2024
Claudia 0 Hager
Durham County
200 E Main St 2nd Floor
Durham, NC 27701
SUBJECT: NOTICE OF VIOLATION
Tracking Number: NOV-2024-LV-0800
Permit No. NCO026051
Triangle WWTP
Durham County
Dear Permittee:
A review of the July 2024 Discharge Monitoring Report (DMR) for the subject facility revealed the violation(s)
indicated below:
Limit Exceedance Violation(s):
Sample
Location Parameter
Limit Reported
Date Value Value Type of Violation
001 Effluent BOD, 5-Day (20 Deg. C) - 7/27/2024 7.5 8.25 Weekly Average Exceeded
Concentration (C0310)
001 Effluent BOD, 5-Day (20 Deg. C) - 7/31/2024 5 5.71 Monthly Average Exceeded
Concentration (C0310)
Remedial actions should have already been taken to correct this problem and prevent further occurrences in the
future. Please respond in writing within ten (10) business days after receipt of this Notice, stating whether the
violation(s) has been corrected, or if it is of an ongoing nature. If the violation(s) has been resolved, your
response should include a description of the actions that were taken to address the violation(s) and to prevent
their reoccurrence.
If the violations cited in this Notice are of a continuing nature, you must provide a report to DWR's Raleigh
Regional Office that includes the following information:
• Owner and Facility Name, and NPDES Permit Number.
• A list of violations that have occurred during the noncompliant episode.
• A statement summarizing the facility's investigation of the noncompliance, indicating its cause.
• The facility's corrective action plan or strategy to address the noncompliance.
• A statement describing the facility's implementation of its corrective action plan, including the date of an
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Docusign Envelope ID: 405065B5-56FF-499B-AB29-63A6900B58CF
anticipated return to consistent compliance.
Your response and/or report should be submitted to my attention to the address at the bottom of the first
page, or you may send it as an attachment to an email to [e-mail]. Either form of
reply should be submitted within ten (10) business days.
If continuing violations are not related to operation and/or maintenance problems, and you anticipate remedial
construction activities, you may wish to consider applying for a Special Order by Consent (SOC). Please be aware
that it is a condition of your NPDES permit that you adequately address such violations (Part II, Section B. 2 -
the "Duty to Mitigate" condition). Violations of a continuing nature can justify the assessment of increased civil
penalty amounts to address the noncompliance.
If you have any questions concerning this matter, wish to request technical assistance, discuss overall
compliance, or explore the possibility of entering into a SOC, please contact Cheng Zhang of the Raleigh Regional
Office at 919-791-4200, or via email at [e-mail].
Cc: Laserfiche
Sincerely,
Signed by:
B2916E6AB32144F...
Vanessa E. Manuel, Assistant Regional Supervisor
Water Quality Regional Operations Section
Raleigh Regional Office
Division of Water Resources, NCDEQ
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Raleigh Rcgionai OOlce 13800 BarrNl DINC I Ralclgh. North Carolina 27609
919.791A200