At 3:11 p.m. on August 26, 2015, Employee #1, who had worked with the company for three months as a forklift operator/ repacking, was working alone in the repacking area making a transfer of flammable liquid acetone from an elevated 793-gallon stainless steel intermediate bulk container (tote) to a 350-gallon stainless steel tote on the ground. In order to make the transfer, Employee #1 elevated the 793-gallon tote with a forklift. The main valve connected directly to the tote was open, and the valve connected to the transfer hose was closed.