Update on TPC efforts to move chemicals off-site

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. On Monday (December 9), 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 industry 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.