clearly indicated for each lot in such a way that it can be announced during the public tender opening session. 

7.4 Contracts will be awarded lot by lot, but the contracting authority may select the most favourable overall solution after taking account of any discounts offered. 

## 8. Period of validity 

8.1 Tenderers will be bound by their tenders for a period of 90 days from the deadline for the submission of tenders. 

8.2 In exceptional cases and prior to the expiry of the original tender validity period, the contracting authority may ask tenderers in writing to extend this period by 40 days. Such requests and the responses to them must be made in writing. Tenderers that agree to do so will not be permitted to modify their tenders and they are bound to extend the validity of their tender guarantees for the revised period of validity of the tender. If they refuse, without forfeiture of their tender guarantees, their participation in the tender procedure will be terminated. In case the contracting authority is required to obtain the recommendation of the panel referred to in Section 2.6.10.1.1. of the practical guide, the contracting authority may, before the validity period expires, request an extension of the validity of the tenders up to the adoption of that recommendation. 

8.3 The successful tenderer will be bound by its tender for a further period of 60 days. The further period is added to the validity period of the tender irrespective of the date of notification. 

## 9. Language of tenders 

9.1 The tenders, all correspondence and documents related to the tender exchanged by the tenderer and the contracting authority must be written in the language of the procedure, which is English. 

If the supporting documents are not written in one of the official languages of the European Union, a translation into the language of the call for tender must be attached. Where the documents are in an official language of the European Union other than English, it is strongly recommended to provide a translation into English, to facilitate evaluation of the documents. 

## 10.Submission of tenders 

10.1 Tenders must be sent to the contracting authority before the deadline specified in 10.3. They must include all the documents specified in point 11 of these Instructions and be sent to the following address: 

Public Works Administration, Arsenija Boljevića 2a, floor III, Podgorica 81000, Montenegro 

If the tenders are hand delivered they should be delivered to the following address: 

Public Works Administration, Arsenija Boljevića 2a, floor III, Podgorica 81000, Montenegro from 07.00 – 15.00 hours 

Tenders must comply with the following conditions: 

10.2 All tenders must be submitted in one original, marked ‘original’, and three (3) copies signed in the same way as the original and marked ‘copy’. In addition to the original and hard copies of tender, an additional electronic version of the offer will be submitted. In case of 

