The contraa comprises two (two) lots, tenders being accepted for either of them or both, but in this case also submitted separately per lot:

— lot 1: design and construction of the Este emissary,

— lot 2: design, construction and operation of the eastern WWTP.

Lot 1: design and construction of the emissary of the east.

Lot 2: design, construction and operation of the East WWTP.