the project control services are divided into a firm tranche and 5 optional tranches. The firm tranche includes the project management assignment for rehabilitation works (avp, pro, act, visa, det, opc, aor) as well as 5 complementary missions (MC) relating to the completion of the single environmental authorisation file (Mc1) as well as assistance (act, det) for the selection and monitoring of additional providers (MC 2, 3, 4) and 5). The optional tranches (To) concern the selection and monitoring of complementary providers (TO 1 and 4), the carrying out of an impact study (TO 2), the development of the cnpn file (to 3) as well as a complementary project management mission (avp, pro, act, visa, det, aor) for the realization of an in-depth study and corresponding work in according to the conclusions of the stability study at the level of cofferdams and flood evacuators (TO 5)

the project control services are divided into a firm tranche and 5 optional tranches. The firm tranche includes the project management assignment for rehabilitation works (avp, pro, act, visa, det, opc, aor) as well as 5 complementary missions (MC) relating to the completion of the single environmental authorisation file (Mc1) as well as assistance (act, det) for the selection and monitoring of additional providers (MC 2, 3, 4) and 5). The optional tranches (To) concern the selection and monitoring of complementary providers (TO 1 and 4), the carrying out of an impact study (TO 2), the development of the cnpn file (to 3) as well as a complementary project management mission (avp, pro, act, visa, det, aor) for the realization of an in-depth study and corresponding work in according to the conclusions of the stability study at the level of cofferdams and flood evacuators (TO 5)