All written requests shall be responded to within five working days following the date the request is received. (5 ILCS/140/3) The five-day count begins the day after the receipt of the Freedom of Information Act (FOIA) request by the Department FOIA Officer, or designee. The requester may be notified of a five-day extension (working days) if the files are voluminous, at different locations, or if other reasons make it impossible to assemble and mail the request out within the normal five day period.