The contract is broken down into a flat-rate part representing the maintenance of the various pipes and accessories over a sensitive perimeter (detailed in the Dpgf), a flat-rate part with a purchase order representing the maintenance of the various pipes and accessories over a current perimeter (detailed in the Dpgf) and a part with a purchase order representing one-off repair or investigation operations (Bpu). The estimated amounts are indicative and include options (similar benefits and renewals) as well as all renewal periods

The contract is broken down into a flat-rate part representing the maintenance of the various pipes and accessories over a sensitive perimeter (detailed in the Dpgf), a flat-rate part with a purchase order representing the maintenance of the various pipes and accessories over a current perimeter (detailed in the Dpgf) and a part with a purchase order representing one-off repair or investigation operations (Bpu). The estimated amounts are indicative and include options (similar benefits and renewals) as well as all renewal periods