The successful tenderer will be asked to provide a performance guarantee of 10% of the  amount of the contract at the signing of the contract. This guarantee must be provided  together with the return of the countersigned contract no later than 30 days after the tenderer  receives the contract signed by the contracting authority. If the selected tenderer fails to  provide such a guarantee within this period, the contract will be void and a new contract may  be drawn up and sent to the tenderer which has submitted the next cheapest compliant tender. No information meeting is planned. Tenders must remain valid for a period of 3 months after the deadline for submission of  tenders. In exceptional circumstances, the contracting authority may, before the validity  period expires, request that tenderers extend the validity of tenders for a specific period. N/A  Candidates or tenderers must submit a signed declaration, included in the application form or  tender form, to the effect that they are not in any of the situations listed in Section 2.6.10.1. of  the  practical guide (PRAG).  Candidates or tenderers included in the lists of EU restrictive measures (see Section 2.4. of the  PRAG) at the moment of the award decision cannot be awarded the contract. Sub-contracting is allowed. N/A N/A June 2021 Page 3 of 9  August 2020  a5f_info_candidates_tenderers_enotices_en  17. Period of implementation of tasks  16. Provisional commencement date of the contract  15. Provisional date of invitation to tender  14. Number of candidates to be short-listed  13. Sub-contracting  12. Grounds for exclusion  11. Shortlist alliances prohibited  10. Tender validity  9. Information meeting and/or site visit  8. Performance guarantee 