This report documents the results of an Savannah River Technical Center (SRTC) proposal concerning Tank 48H. Tank 48H is a 'unique tank waste that poses problematic operational processes for which there is no available technology'. These experiments help develop a process for destroying Tank 48H's 'legacy tetraphenylborate organic waste'. Tank 48H will serve as the feed tank for the Actinide Removal Process, which will treat low curie waste. The main objective of the research is to develop processing conditions for the safe destruction of the organic present in Tank 48H and facilitate return of the tank to routine high level waste service by August 2005. SRTC examined processing conditions using non-radioactive, simulated waste. For those processes that prove most attractive, personnel will later demonstrate process viability through pilot scale and actual waste testing.