Alleged Violators: 
    Amerigas Propane L.P.; SuburbanPropane Partners; Empiregas, Inc.; Ferrellgas L.P; Coast Gas, Inc.; Kamp's Propane, Inc.; Northern Energy, Inc.; United Liquid Gas Co.; Campora Gas Service, Inc.; Proflame, Inc.; Superior Propane; Chevron Corporation; Warren Petroleum; Mobil Natural Gas, Inc.; Mobil Corporation; Shell Oil Products Co.; Shell Oil Co.; Texaco Natural Liquids, Inc.; Texaco, Inc.; Atlantic Richfield Co.; Arco Products Co.
     
      Chemical: 
    Acetaldehyde, Benzene, Carbon monoxide, Formaldehyde (gas)