The following words and terms, when used in this subchapter, shall have the following meanings, unless the context clearly indicates otherwise.(1) Corrective action--Any assessment (with the exception of an initial site assessment), monitoring, or remedial activities undertaken to investigate the extent of, and to remediate contamination.(2) Corrective action services--Activities required to accomplish regulated corrective action at a leaking petroleum storage tank (LPST) site.(3) Corrective action specialist--A person that is registered to perform regulated corrective action services on LPST sites.(4) Leaking petroleum storage tank (LPST)--An aboveground or underground storage tank which has a confirmed release of a petroleum substance.(5) Project manager--An individual who is licensed to perform or supervise regulated corrective action services on LPST sites.