Training providers (or a state, directly) must issue unique numbered certificates to students who pass a particular training course examination. The numbered certificate should include the name of the student and the course completed, the dates of the course and the examination, a statement indicating that the student completed the requisite training, and an expiration date for accreditation that is one (1) year after the date on which the student successfully completed the course and examination. See Unit I.C.1 of Appendix C to 40 CFR part 763, subpart E.