Managed a former paint manufacturing RCRA permit Part B site with DTSC for case closure. This case has been open for almost 26 years. Reviewed the case history for solvent contamination and compiled data to respond to DTSC comments and prove that there is no vapor intrusion issue, no deeper soil vapor plumes and existing soil contamination is local and limited to site. Proposed verification soil vapor survey and groundwater monitoring prior to starting the closure process. Designed a closure package under Corrective Measure Study (CMS) program. Evaluated several remedial options and proposed MNA as the remedy and provided justifications.