and the Contracting Authority website http://www.djr.gov.me/rubrike/ipa at the latest 11  days before the deadline for submission of tenders.  Any prospective tenderers seeking to arrange individual meetings with either the contracting  authority and/or the European Commission during the tender period may be excluded from  the tender procedure.  No costs incurred by the tenderer in preparing and submitting the tender are reimbursable.  All such costs will be borne by the tenderer.  The contracting authority retains ownership of all tenders received under this tender  procedure. Consequently, tenderers have no right to have their tenders returned to them.  August 2020 c4b_itt_en.doc  Page 10 of 17  18.2 The tender may be signed by the representative of the joint venture or consortium only if it  has been expressly so authorised in writing by the members of the joint venture or  consortium, and the authorising contract, notarial act or deed must be submitted to the  contracting authority in accordance with point 11 of these instructions to tenderers. All  signatures to the authorising instrument must be certified in accordance with the national  laws and regulations of each party comprising the joint venture or consortium together with  the powers of attorney establishing, in writing, that the signatories to the tender are  18.1 If a tenderer is a joint venture or consortium of two or more persons, the tender must be a  single one with the object of securing a single contract, each person must sign the tender and  will be jointly and severally liable for the tender and any contract. Those persons must  designate one of their members to act as leader with authority to bind the joint venture or  consortium. The composition of the joint venture or consortium must not be altered without  the prior written consent of the contracting authority.  15.3 No tender may be withdrawn in the interval between the deadline for submission of tenders  referred to in Article 10.1 and the expiry of the tender validity period. Withdrawal of a  tender during this interval may result in forfeiture of the tender guarantee.  15.2 Any such notification of alteration or withdrawal must be prepared and submitted in  accordance with Article 10. The outer envelope must be marked ‘Alteration’ or ‘Withdrawal’  as appropriate.  15.1 Tenderers may alter or withdraw their tenders by written notification prior to the deadline for  submission of tenders referred to in Article 10.1. No tender may be altered after this  deadline. Withdrawals must be unconditional and will end all participation in the tender  procedure.  14.1 No clarification meeting / site visit planned. Visits by individual prospective tenderers during  the tender period cannot be organised.  14.Clarification meeting / site visit  15. Alteration or withdrawal of tenders  17. Ownership of tenders  18. Joint venture or consortium  16. Costs of preparing tenders 