Toeroek prepares and provides training on numerous environmental programs. An example is a full-day course designed to assist EPA Region 5 RCRA corrective action staff in planning for and implementing corrective action activities. The course provided an overview of the corrective action process and detailed discussions of (1) developing a conceptual site model (CSM) and its ongoing role throughout the characterization and remediation phases; and (2) RCRA facility investigation (RFI) process, including planning activities, implementation issues, and the development, review, and approval of project plans, such as the QAPP. Innovations and new developments related to the CSM and RFI processes were also presented, including the Triad Approach for field sampling activities; high-resolution site characterization for sources and groundwater; 3‑Dimensional Visualization of data; vapor intrusion pathway; and green remediation. The course included a discussion of Remedial Action Objectives (RAOs) and remedy selection and implementation. The course used lecture, site examples, and facilitated discussion as the primary instructional methods.