2.1 Authorities should start to plan for the contract monitoring phase of their project when they are putting together their OBC. The Authority will set out in detail in the OBC, the scope, cost, affordability, risks, procurement route and timetable of the procurement of the project. When calculating costs, the OBC should also contain a realistic estimate of the costs needed for contract monitoring during the construction stage and through to the end of the operational period. Even if a self-monitoring PPP/NPD Contract is proposed in the OBC, Authorities should still assume that there will be contract monitoring costs accruing to the public sector. The KSR pre OJEU process will require that information on the cost to the Authority of monitoring the contract is included in the affordability calculations.