Complex sentence: The facility also houses a petrochemical plant which produces lubricants and additives, a polypropylene plant which produces 775 million pounds per year, and has its own railway container terminal and heliport.
Split into simpler sentences: The facility also houses a petrochemical plant which produces lubricants and additives and a polypropylene plant which produces over 775 million pounds per year of polypropylene. The refinery has its own railway container terminal and heliport.