NC0081469_NC0081469 Report -Toluene and Napthalene 20240920_20240920

(0) Colonial Pipeline Company
September 17, 2024
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North Carolina Department of Environmental Quality Llr���1N�tal
Water Resources, Water Quality Regional Operations Section Sep
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Raleigh, North Carolina 27699-1628
Summary of Actions Taken Toward Compliance with Future Permit Limits
RDA Delivery Facility (NC0081469)
1010 National Guard Drive
Morrisville, Wake County, North Carolina
To Whom It May Concern,
Colonial Pipeline Company (CPC) is providing this summary of actions taken toward compliance with
future permit limits for the Raleigh -Durham Airport (RDA) Delivery Facility. Section A. (1.) of Permit
NC0081469, issued by the North Carolina Department of Environmental Quality (NCDEQ) Division of
Water Resources (the Division) on August 29, 2023, proposed limits for toluene [monthly average and
daily maximum of 11 micrograms per liter (ug/L)] and naphthalene [monthly average and daily
maximum of 12 ug/L], which would be imposed during the next permit cycle (2028). Section A. (5.)
requires that a summary of actions taken toward compliance with future permit limits be submitted
annually by October 111 of each year during the current permit cycle.
Below is a list of activities that have been performed in order to meet permit limits at outfall 001.
• November 2023 - Emptied and pressure washed oil/water separator.
• November 2023 - Sealed joints in the water management basin that were a potential pathway
for run-on stormwater to enter the basin.
• April 2024 - Rerouted piping to send product directly to the sump, bypassing the oil/water
separator, during maintenance activities.
• May 2024 - Emptied and pressure washed water management basin.
• July 2024 - Emptied and pressure washed oil/water separator.
Some of the activities above were also performed to mitigate total suspended solids (TSS) limit
exceedances that were due to construction activities on the adjacent airport property north of the RDA
facility, and which have been addressed in submittals to the NCDEQ on April 1, 2024 and May 28,
2024. The activities summarized above appear to have improved water quality at outfall 001 and
toluene and naphthalene have not been detected in samples since March 2024.
If you have any questions or would like to discuss, please contact Dusty Reedy at 678-213-7365.
411 Gallimore Dairy Road I Greensboro, North Carolina 127409

(a Colonial Pipeline Company
Cordially,
Colonial Pipeline Company
David "Dusty" Y. Reedy II Kyle D. Boyan
Environmental Specialist Manager, Operations
Cc: NCDEQ 1 Division of Water Resources, NPDES Compliance and Expedited Permitting, 1617
Mail Service Center, Raleigh, NC 27699-1617
John Wyatt, Manager, Southeast Environmental Programs, CPC, [e-mail]
Stephen Anderson, Right of Way Inspector il, CPC, [e-mail]
Michael Pfeifer, Senior Project Manager — Environmental, S&ME, [e-mail]
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