3_Vol3_d4.3_Section 3_Plant Description_GIR_rev08  The wastewater collected from the city will come to the WWTP by a 1000 mm diameter collector to  be constructed under the scope of the “Lot 2 Construction of Giresun Wastewater Collection System”  3.3.3 Main wastewater collector   Discharge collector = where the wastewater is discharged directly to the receiving body there  is no boundary and the discharge pipeline with all protective covers, manholes and discharge  structure are considered within the Contract.  Natural Gas = the contractors boundary is at boundary of the wastewater treatment plants site.  Internet = the Contractors boundary is at the connection of the Internet to the main server  within the plant.   Telecom = the Contractors boundary is at the connection of the telecom line to the main  telecom switchboard within the plant.  Water supply = the Contractors boundary is at the physical boundary of the wastewater  treatment plant site (fence), the exact coordinates shall be defined by the End Recipient.  Electrical power = the Contractors boundary is the connection point of transformer.  Access road = the Contractors boundary is the main gate of the wastewater treatment plants  site.  The Municipality will arrange for the relevant authorities (or by his own facilities) to provide the  following utilities up to the boundaries of the Contractor’s responsibility. The boundaries of the  utilities within the responsibility of the Contractor are given below. In case of no boundary is defined  for any utility or any other interface the coordinates of the interface will be assumed as at the physical  boundary of the treatment plant site (fence).  3.3.2 Utilities and main access road   All localities at the treatment plant shall be classified in EX zones in accordance with the local  laws, the ATEX Directive and other related directives, norms and standards as per Section  2.10. Hazardous area classification and ex-proof equipment requirement have been defined in  the Electrical technical specification Section 8.4.  Electro-mechanical equipment offered by the Contractor shall be in accordance with the  specifications given in Section 7 and Section 8. However,  during the implementation stage if any equipment which is offered by the Contractor is not covered by the herewith  Employer’s Requirements, the Contractor shall supply the specification for the equipment  which shall be subject to the approval of the Engineer. The energy efficiency of electro- mechanical equipment shall be equal or higher than the first offered electro-mechanical  equipment.   The Contractor shall apply the wastewater treatment process as described in these Employer's  Requirements. The specified numbers of process units, equipment and instruments shall be  deemed to be the minimum required numbers.  Construction of Giresun Wastewater Treatment Plant  Tender Dossier Volume 3 Employer’s Requirements  Section 3: Plant Description  13 of 74 