| CLASS | TRADE |
|---|---|
| A | GENERAL ENGINEERING CONTRACTOR |
| B | GENERAL BUILDING CONTRACTOR |
| C33 | PAINTING AND DECORATING CONTRACTOR |
| C10 | ELECTRICAL |
| C31 | CONSTRUCTION ZONE TRAFFIC CONTROL CONTRACTOR |
| C21 | BUILDING MOVING/DEMOLITION CONTRACTOR |
| C16 | FIRE PROTECTION CONTRACTOR |
| HAZ | HAZARDOUS SUBSTANCE REMOVAL CERTIFICATION |
| ASB | ASBESTOS CERTIFICATION |