8 of 40 Construction of Giresun Wastewater Treatment Plant  Tender Dossier Volume 3 Employer’s Requirements  Section 04: General Requirements for the Execution and Completion of the Works  before that Subcontractor starts to work.  Contract to be concluded by the subcontractor, of which its employment is approved by the  Engineer, with the contractor shall certainly be certified by the Notary Public. In order to be qualified: a proposed subcontractor must demonstrate that it has successfully  completed at least 2 (two) similar contracts during the last 8 (eight) years to the part of the Works  that it is proposed to be appointed, and it is financially sound.  In the contract execution stage, the Contractor shall present the qualification documents related  with the above criterion, which shall be required by the Engineer, from subcontractor for the  review and consent of the Engineer. The Contractor can appoint only the subcontractors that obtained the consent of the Engineer.  Any other appointment will not be considered as subcontractor assignment.  The Engineer may request, with the approval of the Employer, the Contractor to remove (or cause  to be removed) any sub-contractor on the Site.  4.4 Access to the Site  (Yellow Book, Sub-Clause 4.15)  A hard-surfaced road providing access to the site shall need to be maintained in a way to handle  construction traffic, but the road is suitable for general transportation.  All access to the site shall take place on the site access roads.  No direct payment will be made to the Contractor for constructing temporary roads used for  construction operations, or for improving, repairing or maintaining any existing road or structure  thereon that may be used by the Contractor for performance of the works. The cost of all temporary  roads shall be included in the payments for the other items of work. The Contractor shall observe all rules and regulations regarding the use of public roads. The cost of  maintaining all necessary safety measures and temporary structures and making any necessary  repairs, replacements or similar operations and all or any other costs required by reason of the use  of such roads shall be borne by the Contractor. The Contractor shall save harmless and indemnify  the Employer in respect of all claims, demands, proceedings, damages, costs, charges and expenses  whatsoever arising out of or in relation to any such operation or interference.  4.5 EC Publicity & Visibility Requirements  The Contractor shall take all necessary measures to publicise the fact that the European  Commission has financed the project in accordance with the Communication and Visibility Manual  for  EU  External  Actions.  The  manual  can  be  downloaded  from  http://ec.europa.eu/europeaid/work/visibility/index_en.htm  4.5.1 EU Communication and Visibility Manual for EU External Actions  4_Vol3_d4.3_Section 4 General Requirements_en_GIR_rev6 