Sequential examinations
- Colorado requires operators to pass exams sequentially to advance to higher levels.
- For treatment certificates, operators must progress in order from class "D" to "C" to "B" to "A."
- For example, operators cannot skip from "C" to "A."
- For collection and distribution certificates, operators must progress in order from class "1" to "2" to "3" to "4."
- For example, operators cannot skip from "1" to "3."
- For treatment certificates, operators must progress in order from class "D" to "C" to "B" to "A."
Requirements for eligibility to sit for advanced examinations
Certification Class | Prior Certification Required1 | Minimum Experience Required |
Class C | Class D or Class S | 2 Years |
Class 2 | Class 1 or Class S | 2 Years |
Class B | Class C | 3 Years |
Class 3 | Class 2 | 3 Years |
Class A | Class B | 4 Years |
Class 4 | Class 3 | 4 Years |
1Prior certification must be for the same certification category as that of the examination being applied for.
Board Guidance 15-2, Colorado Operator Certification Examination Guidance, includes examples to help operators understand how experience is calculated.
Substitutions
- Regulation 100 explains how post secondary education and cross experience may be substituted for the experience requirements.