2. For each contract in the table (list), the tenderer must present a client's reference  letter relevant to cleaning service contracts performed during the past three  calendar years specifying whether the services have been carried out in a  professional manner in compliance with the contractual terms and the amount of  the contract. 9  6. EVALUATION OF TENDERS Evaluation of tenders on the basis of the award criteria 6.1. The criterion is applied to: The evidence pertains to:  Criterion 5.3.3.b): Manpower.  Minimum capacity level: Supporting document(s)/evidence requested:  The criterion is applied to:  The evidence pertains to:  Contracts without reference letters shall not be included in the list of the contracts as  they will not be accepted. The reference letters provided for the contracts which are not  in the list will not be accepted either.  The tenderer. In case of joint tender this selection criterion will be applied to the group  as a whole.  At least one of the economic operators who will perform the cleaning services.  The tenderer must currently employ at least five (5) staff in the fields related to  cleaning services. The declared manpower in the above-mentioned fields cannot be higher than the total  manpower.  Duly completed table of the "Request to participate form".  The tenderer. In case of joint tender this selection criterion will be applied to the  group as a whole.  At least one of the economic operators who will perform the cleaning services.  The tenders are evaluated in order to award the contract to the tender offering the lowest  price. In other words, the contract is awarded to the lowest tender that satisfies the minimum  requirements set in the technical specifications.  The tenderers shall upload on e-Submission the "Statement of compliance with the  procurement documents and checklist on minimum technical requirements" in Annex 1 of  technical specifications duly dated and signed in order to be considered technically  compliant. The technically compliant tenders are evaluated in order to award the contract to  the tender offering the lowest price. 