Bay Area Tank & Coating- BAT&C performed internal and external coatings on three (3) aboveground Storage tanks in Northern California. One (1) Sludge Conditioning AST & Two (2) Polymer AST's. After the crew was orientated they began to sandblast the 2 polymer tanks. After the polymer tanks were blasted, BAT&C crew set up to internally line them with Enviroline 405 HT high-build two part epoxy coating system. After the polymer tanks were finished, BAT&C crew began blasting the Sludge Conditioning tank, clean and lined with Enviroline 405 HT high-build two part epoxy coating system. All three of the tanks were externally coated with Sherwin Williams Macropoxy 646.