Chevron Corp. has let a contract to WorleyParsons Ltd. to provide
engineering, procurement, and construction management services for
conversion of the existing 4,500-b/d hydrofluoric acid (HF) alkylation
unit at its 53,000-b/d refinery in Salt Lake City, Utah, into the
first-ever alkylation unit in the US based on ionic liquids alkylation
technology.

Source: News