Importing Diesel Engine

importing a concrete batch machine with a 100kW diesel engine. And to meet EPA regulations, importers need a CBP Form 301 bond in the amount of $500 to fulfill paragraph 22 of 3520-21 19 CFR 12.74 - Nonroad and stationary engine compliance with Federal antipollution emission requirements."

This is the section of 1309.626 that states the possible forfeiture of the posted bond. The importer is liable for the full bond amount ($50,000).

NOTE:  CBP minimum bond amount is $50,000, only 40 CFR 1039.625 - What requirements apply under the program for equipment-manufacturer flexibility?