Update #28: Colonial Pipeline – SR2448 Response, July 1, 2021 – 3:30 PM EST

Colonial Pipeline Update

As Colonial Pipeline Company continues our remediation and recovery efforts at the site of a release event outside of Huntersville, North Carolina, safety remains a central focus and is embedded in every aspect of our response.  We continue to work closely with local, state and federal regulators and communicate with key stakeholders to keep them informed of our activities and update them on our progress.

Recovery Efforts

Data collection from a growing network of monitoring and recovery wells, and other measurements, continues to inform our ongoing recovery and remediation efforts. To date, Colonial has installed 177 wells to support environmental remediation, including 108 monitoring and 69 recovery wells at and around the release location.  The well network includes a series of wells at different depths located around the perimeter of the site. Information collected from those wells continues to indicate that product remains contained to the general vicinity of the release location, and there is no evidence of free product in the perimeter wells.

As shared in the June monthly report to the North Carolina Department of Environmental Quality (NCDEQ), as of June 16, 2021, Colonial has recovered approximately 28,078 barrels of product. We expect to have recovered more than our previous release estimate of 28,571 barrels within a week. We continue to evaluate alternative methods to estimate the total volume released.  Those methods are complex and require multiple data points and assumptions, and the calculations from those models must be validated and reviewed.

Completion of site models, assessments, remedial design or ongoing remediation efforts are not dependent on, nor affected by, an updated estimated release volume. Our priority remains continuing to safely recover product and to restoring the area and surrounding environment.

Environmental Update

We have continued to conduct weekly tests of water supply wells for homes within the 1,500-foot monitoring radius established by NCDEQ and we have committed to biannual testing of wells located between 1,500 and 2,000 feet from the release point. These tests are performed by third-party consultants and submitted under chain of custody to NCDEQ certified third-party labs. The results are also shared with the NCDEQ.

No petroleum constituents have been detected in water supply well samples. Environmental monitoring, including air quality and noise, continues.

Colonial remains committed to protecting human health and the environment and we will be here for as long as it takes to recover product and safely remediate this area.

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