design, engineering, procuring, construction, erection, testing and commissioning (epc) of 765 kld sewerage treatment plant (out of them 350 kld treated water should be used for gardening, domestic/flushing purposes, selected bidders has to treat accordingly considering tender gpcb norms) and successive 3 years of operation and maintenance at ghb-jahangirabad phase-5 project, surat city in gujarat