Port Arthur, Texas – Unified Command reports ongoing response efforts at TPC Group Port Neches Operations remain focused on safely bringing the event to an end.
Situational update: Response efforts continue to focus on activities to secure site equipment and minimize impact to the environment, while preserving the safety of emergency responders.
At approximately 5:30 p.m. this evening, technical experts with TPC Group began introducing an additive known as “DEHA” (diethylhydroxylamine) to storage tanks containing butadiene to stabilize the materials for longer-term storage, transportation, and removal from the site. DEHA is used to inhibit or prevent chemical reactions in storage tanks and it is commonly used in TPC Group site operations and materials transport. TPC Group is introducing DEHA to 11 storage tanks containing butadiene using portable equipment. This will be a phased process and is expected to take approximately five days to complete. No off-site impacts or public health concerns are anticipated as part of the DEHA process.
Plans are underway to safely transfer all remaining materials from the site, based on mechanical integrity inspections of tanks. All tanks containing materials are being evaluated and prioritized for transfer. Options to safely transport materials from the site are being assessed.
Friday morning (December 6), Unified Command identified small fires in the impacted area on site. These small residual fires were anticipated and are being contained. Response teams continue to monitor and assess. Smoke may be visible.
Air Monitoring update: Air monitoring around the site and in the community continues to show no actionable butadiene levels. Unified Command, comprised of federal, state, local agencies and TPC Group, remains diligent in efforts to monitor air quality. Monitoring coverage, by various state, federal, and local agencies, extends throughout the county and is providing real-time air quality data to Unified Command.
Occasional elevated air measurements may continue to register as response teams secure the site. In the last 24-hours, experts have collected 4,364 air monitoring readings in the community. All of these readings were below actionable levels in the community.
Agency for Toxic Substances and Disease Registry (ATSDR), a federal public health agency, is still onsite as a third-party resource dedicated to reviewing the environmental data provided by Unified Command and will communicate findings once they are available.
Traffic Update: Traffic updates will continue to be provided, as available. Click for a map of street closures. The latest traffic information follows.
Open – Grigsby Avenue at Spur 136
Closed – Portions of Spur 136 near TPC Port Neches Operations remain closed, including:
- Intersection of Spur 136 at Highway 366
- Spur 136 to Highway 366 in front of TPC Port Neches Operations
- Highway 366 between Spur 136 & Park Street
Public Information Update: Unified Command has migrated to a new Facebook page. We encourage community members to follow the page for updates at http://facebook.com/portnechesuc
Citizens can continue to access updated information on Twitter @PortNechesUC and via the response web site at www.portnechesresponse.com.
Updates and information regarding the event continue to be posted:
On the web: www.portnechesresponse.com
U.S. EPA: www.response.epa.gov/south4groupfire