64.—(1) With regard to—
(a)criteria relating to economic and financial standing as set out under regulation 59(7) to (15) (selection criteria); and
(b)criteria relating to technical and professional ability as set out under regulation 59(16) to (19) (selection criteria),
an economic operator may, where appropriate and for a particular contract, rely upon the capacities of other entities, regardless of the legal nature of the links which it has with them.
(2) With regard to criteria relating to the educational and professional qualifications mentioned in regulation 61(9)(g) (means of proof), or to relevant professional experience, economic operators may however only rely upon the capacities of other entities where the latter will perform the works or services for which these capacities are required.
(3) Where an economic operator wants to rely upon the capacities of other entities, it must prove to the contracting authority that it will have at its disposal the resources necessary, for example by producing a commitment by those entities to that effect.
(4) The contracting authority must, in accordance with regulations 60 to 62, verify whether the entities upon whose capacity the economic operator intends to rely fulfil the relevant selection criteria and whether there are grounds for exclusion of those entities under regulation 58 (exclusion grounds).
(5) The contracting authority—
(a)must require the economic operator to replace an entity which does not meet a relevant selection criterion, or in respect of which there are compulsory grounds for exclusion; and
(b)may require the economic operator to substitute an entity in respect of which there are non-compulsory grounds for exclusion.
(6) Where an economic operator relies upon the capacities of other entities with regard to criteria relating to economic and financial standing, the contracting authority may require the economic operator and those entities to be jointly liable for the performance of the contract.
(7) A group of economic operators as referred to in regulation 20(4) (economic operators) may rely upon the capacities of participants in the group or of other entities, and paragraphs (1) to (6) apply in relation to such a group in the same way that they apply in relation to an economic operator.
(8) In the case of works contracts, supply contracts requiring siting or installation work or services contracts, a contracting authority may require certain critical tasks to be performed directly by the tenderer itself or, where the tender is submitted by a group of economic operators as referred to in regulation 20(4) (economic operators), by a participant in that group.