fire wall 4 feet high and 18 inches wide at the top, and make the inside
dimensions of the fire wall 73 feet long and 33 feet wide. Place the
discharge pumps at a level lower than the tanks to aid pump suction.
For the 500-gallon collapsible drums, select a firm, level site near
the source of supply. Select a site that allows drums to be easily lined
up for filling and rolled away after filling.