A former drum storage area where spills and regular dumping occurred from the 1940s to the 1960s. Large number of drums were stored at the Control Tower Drum Storage Area (CTDSA) and CTDSA South, stacked horizontally about three high and ten wide, typically containing unused aviation gas, JP-4, JP-1, diesel fuels, solvents, thinners, cooking fuel, and possibly some waste products. Unused drum residues were reportedly discharged onto the ground prior to shipping the drums off-site. Also known as Site 2 Spill Leak No. 1. The CTDSA South (IRP Site SS013) fully encompasses the smaller CTDSA (SS002) site, but they are listed in the Air Force database as two sites.