AEC was contracted to remove four 30,000 gallon tanks and install engineer approved bracing for 2 transformer pads located next to the excavation site. During removal, AEC excavated and disposed of approximately 3,500 tons of petroleum contaminated soil then backfilled with 5,000 tons of clean soil. A concrete slab with reinforcement was laid to accommodate two 20,000 gallon aboveground tanks with a fuel polishing system. AEC designed all double wall piping and the monitoring system, hooking the new tanks to the existing boiler piping. A pump set was furnished to supply fuel to the boilers. During this installation, AEC pumped and treated 140,000 gallons of petroleum impacted water and land applied. Subsurface investigation and installation of 9 monitoring wells were installed as per the DEQ requirements.