Foam Units. The amount of foam used at an incident must be documented daily on the Emergency Equipment Shift Ticket (OF-297), and have appropriate approvals. If the foam available at the incident, or by host agency, is not compatible with FSO equipment, the FSO may be reimbursed upon return to the home unit. If replacing at the home unit the incident must approve an Incident Replacement Requisition (OF-315). Refer to SIIBM, Chapter 30. A Supply Resource Order is required for replacing items at the home unit. No additional compensation will be given for equipment with foam units.