8 of 9 Construction of Giresun Wastewater Treatment Plant VOLUME 4 – Schedules of Payments Signature  The present process performance guarantee shall be signed by the Tenderer and included in the Tender.  Date  :  Tenderer's signature  :  Tenderer's company stamp  :  Indicators  Value$^{1}$  Stage  Chemical consumption for Nitrogen  Removal to reach the guaranteed To- tal-N concentration at the outlet …….  kg Methanol /  kg T-N removed   (to be filled in  by the tenderer)  Test on Completion  Natural gas consumption for sludge  drying to reach the guaranteed Dry  solid content at the outlet of the  sludge drying …….  Sm$^{3}$/kgSS  dried  (to be filled in  by the tenderer)  Test on Completion  Polymer consumption for excess  sludge thickening (as dry Polymer) to reach the guaran- teed DS% content at the mechanical  thickener  …….  kg dry polymer  /ton dry solid  (to be filled in  by the tenderer)  Test on Completion  Polymer consumption for dewatered  sludge (as dry Polymer) to reach the guaran- teed DS% content at the outlet of  mechanical dewatering unit  …….  kg dry polymer  /ton dry solid  (to be filled in  by the tenderer)  Test on Completion  Reduction of Volatile Solids (VS) in  anaerobic digesters  …….%  (to be filled in  by the tenderer)  Test on Completion  August 2020 d4w_finoffer_4.2_en.doc Page 8 of 9 