From what I know there is not a list of required topics/content. All of my employers have customized it to our needs. Since I have worked in delineation and remediation oversight, typically the topics covered were respiratory protection, levels of PPE, monitoring equipment, sampling, remediation zones, decontamination, waste packaging and transport, hazard communication, and multi-employer work sites. Once all that was covered we would talk about specific projects and issues.

There are several online courses that are actually pretty good.