Scow - Large flat bottom boat with broad square ends used primarily for

transporting bulk material. 1.65 Self-billing invoice - refers to the "Self Billing Invoice Form" used for the self-billing procedure, which will be available upon request. 1.66 Self-billing procedure - the manual billing process that will be followed when the PRPA notifies the customer that the DSMS system its not available. I said case, the customer shall prepared the invoice using the "Self Billing Invoice Form" to report the total charges owed to the PRPA for the use of its facilities and conducted Maritime Operations. The Self Billing Invoice Form must be submitted accompanied by its supporting documentation. In all self-billing procedures, payments must be received at the time the corresponding billing information is submitted.