Any individual who supervises any corrective action required on Leaking petroleum storage tank (LPST) site must be licensed as an LPST Corrective Action Project Manager. Corrective action services include measures to determine and report the extent of a release in progress, to halt and prevent future releases of regulated substances, site cleanup of surface and subsurface contamination, site closure, and post-remediation monitoring or any other action reasonably necessary to protect public health and environmental safety.