LyondellBasell Lifts BDO and Derivatives FM

October 11, 2017

Subject: 1, 4 Butanediol (BDO) and Derivatives – Cessation of Force Majeure Event
Relating to Hurricane Harvey

Dear Valued Customer,

We are pleased to inform you that effective immediately, the force majeure event relating to
Hurricane Harvey for 1, 4 Butanediol (BDO) and Derivatives, has ceased.
As always, your Account Manager is available to address any questions or concerns you may
have regarding product availability.

We greatly appreciate your cooperation and understanding throughout the recent event, and we
look forward to our continued relationship.