In this application, a 40” x 36” x 180” double wall tank was required. This large tank needed to be lowered down onto a ledge in a deep pit. Large lifting lugs were strategically placed for zero interference. For access and internal maintenance, three 24-inch manways were included in the tank design. This duel cantilever ORTS® was equipped with quick release, waterproof electrical connections, two 2-inch double diaphragm pumps, electric over air act switches to help control the pumps, triple ball float switches for oil tank level, and stand alone mechanical level switches. All this was controlled with a centrally located, stainless steel controller equipped with a timer. Two 6-inc I-beam skid rails support the tank. The tank was then sealed with chemical resistant coating inside and out.