37 CLEANING OF STORAGE TANKS FOR FUELS, LUBRICANTS, AND LIQUEFIED PETROLEUM GASES; ENVIRONMENTAL FUEL SPILL CLEANUP AND REMEDIATION SERVICES, NAMELY CLEAN UP OF SPILLED FUELS, LUBRICANTS AND LIQUEFIED PETROLEUM GAS; MAINTENANCE OF STORAGE TANKS FOR FUEL, LUBRICANTS AND LIQUEFIED PETROLEUM
40 FUEL TREATMENT SERVICES, NAMELY, REMOVAL OF CONTAMINANTS AND SEDIMENTS FROM MOTOR FUELS, AVIATION FUELS, HEATING FUELS, TURBINE FUELS, LIQUEFIED PETROLEUM GASES, AND ENGINE LUBRICANTS