The 260 gasoline water pumps described below (with nonroad, small spark-ignition engines) were found to be imported by RT Go Co LTD. in violation of Sections 203(a)(1) and 213(d) of the Clean Air Act (CAA), 42 U.S.C. ?? 7522(a)(1) and 7547(d), and the regulations codified at 40 C.F.R. ?? 1068.101(a)(1), and 1068.l0l(b)(5), which collectively prohibit the importation of engines or equipment containing these engines, unless they are covered by a valid EPA certificate of conformity (COC) or are properly exempted or excluded. Since an EPA certificate of conformity (COC) has not been awarded to RT Go Co LTD. for the 260 gasoline water pumps, they are considered uncertified. In addition, the EPA has found no evidence that the either engine is exempt or excluded from coverage. Hence, the 260 gasoline water pumps cannot legally be imported into the United States.