The flat rates should be based on historical data available to the Commission, the potential for cost recovery and the polluter-pays principle, where applicable.
Ba cheart na rátaí comhréidhe a bheith buanaithe ar na sonraí stairiúla atá ar fáil ag an gCoimisiún, an fhéidearthacht costas a aisghabháil chomh maith leis an bprionsabal íoc mar a thruaillítear, i gcás inarb infheidhme.