Westlake’s Calvert City Ethylene Unit Restarted

Westlake’s Calvert City Ethylene Unit Restarted

Houston, Texas – February 12, 2004 – Westlake Vinyls Corporation's ethylene unit at its Calvert City, KY complex has been successfully restarted. The unit was down for repairs due to a fire in late January. All other units at the complex are operating and production schedules are returning to normal levels. The repairs were completed within the estimated time of 2-3 weeks and the financial impact continues to be in the range of $6-$10mm EBITDA as previously estimated.

Westlake Vinyls is a subsidiary of Westlake Chemical Corporation; a Houston based international manufacturer and supplier of petrochemicals, polymers and fabricated products. The company's range of products includes ethylene, polyethylene, styrene, vinyl intermediates, PVC and PVC pipe, windows and fence.