NCG080930_Report_20210930

KINDER/MORGAN
Delivering Energy to Improve Lives
September 30, 2021
Via FedEx and eMail
Tom Tharrington, Environmental Program Manager II
NC DEQ Wilmington Regional Office — Water Resources
127 Cardinal Drive Ext.
Wilmington, NC 28405
Re: Report of Unanticipated Bypass/Upset on 9-24-2021
NPDES Permit #NCG080000, Certificate of Coverage #NCG080960
Kinder Morgan Wilmington Woodbine St Terminal
1710 Woodbine St., Wilmington, NC 28401
New Hanover County
Dear Mr. Tharrington
Kinder Morgan Wilmington Woodbine St. Terminal (WWT) is submitting this follow-up report for an
unanticipated bypass/upset event that occurred on September 24, 2021. This event was reported to
the NC DEQ Wilmington Regional Office on 9/24/2021 via phone call at 10:30 and email.
General Permit No. NCG080000, Certificate of Coverage NCGO80960
WWT has coverage under the National Pollutant Discharge Elimination System (NPDES) General
Permit NCG08000 (the Permit) and Certificate of Coverage NCG080960.
Part H of the Permit, Other Occurrences That Must Be Reported, notes that an unanticipated bypass
must be reported within 24 hours (oral or electronic notification) and within 7 calendar days a report
that includes an evaluation of the quality and effect of the bypass be submitted. This letter serves as
the required 7 day report.
Incident Location
On September 24, 2021, WWT reported an unanticipated bypass of storm water when a dike
containment failure was discovered near WWT NPDES Outfall 001 that resulted in storm water being
discharged to the Cape Fear River (receiving water). The facility experienced heavy rainfall days prior
to the incident resulting in storm water being routed to and accumulating in Containment Area #4 near
Outfall 001.
Permit Compliance
Prior to the incident on September 24, 2021, the facility had no events of non-compliance with the
Permit.
Were Samples Taken
No samples of the discharged water were taken prior to the event. It is expected that the only water
discharged was storm water that did not contain any constituents required to be sampled for in the
Permit (oil and grease, total suspended solids, pH).
1001 Louisiana Street, Suite 1000, Houston, TX 77002

CINDERMORGAN
Delivering Energy to Improve Lives
Discharges from the containment area regulated under the Permit typically do not occur. Accumulated
storm water typically evaporates and is not sampled, discharged or reported under a discharge
monitoring report.
Incident Start and Duration
On Thursday, September 23, 2021, no issues with the facility's Containment Area #4 dike wall were
observed. On the morning of September 24, 2021, at approximately 07:15 WWT personnel observed
a dike wall failure and loss of containment.
Estimated Volume of the Bypass/Upset
The loss of containment discharged approximately 1,090,000 gallons of storm water to the Cape Fear
River.
Weather Conditions during the incident
On Friday, September 24, 2021, we received no rain and had clear skies with a temperature between
60-65 degrees at the time of the incident. Wind speed <10 mph.
Surface Waters
The Cape Fear River is the receiving water for the facility.
Fish kill
Based on observations at the facility on September 24, 2021, the incident did not result in any fish
kills, sheen (oil), odors, or abnormal condition (debris, suspended solids, discoloration, etc.).
Specific causes of the bypass/upset
No issues with the dike wall were observed prior to the incident. The likely causes of the containment
failure were erosion and lack of adequate structure affected by recent, abnormally high rainfall in the
area.
Repairs Made or Actions Taken
On September 24, 2021, temporary containment was established. On September 26, 2021,
permanent containment repairs were completed.
If you have any questions or require additional information, please contact either Gordon Terhune at
404-326-8842 or Gordon TerhunefD.kindermoraan.com; or Jon Booth at 727420-5426 or
Jon [e-mail]
Sincerely,
J�
Troy St
Terminal Manager
CC: NC DEQ Wilmington Regional Office
Gordon Terhune, KM EHS/FES
1001 Louisiana Street, Suite 1000, Houston, TX 77002