at its catlettsburg , kentucky refinery , map has completed the approximately $ 440 million multi-year integrated investment program to upgrade product yield realizations and reduce fixed and variable manufacturing expenses . this program involves the expansion , conversion and retirement of certain refinery processing units that , in addition to improving profitability , will allow the refinery to begin producing low-sulfur ( tier 2 ) gasoline . project startup was in the first quarter of 2004