The Long Beach Board of Harbor Commissioners approved the inclusion of smaller trucks to the Clean Trucks Program on Monday. The board in its meeting also approved penalties for “dray-offs” within the Harbor district — switching cargo from a “clean” to a “dirty.”

The board added “Class 7” trucks to its program. Class 7 trucks are smaller than “Class 8” trucks. Under the program Class 8 trucks are subject to strict emission standards and older models have been progressively banned from terminals since 2008. Class 7 trucks now will be added to the progressive ban starting July 1.

The Board also approved charging cargo owners a Clean Trucks fee if their containers are observed being switched from a clean truck to a banned truck within the Harbor District.

The use of older, more polluting Class 7 trucks and dray-offs give firms an unfair advantage over companies that follow the letter and the spirit of the Clean Trucks Program, according to a statement issued by the port.