Tender For corrigendum : designing and construction of sewage treatment plant of 11.00 & 3.00 mld and designing and construction of various pumping station along with all allied works, designing , providing, supplying, lowering, laying and jointing rising main network and sewer network, supply, installation, testing and commissioning solar panel including operation and maintenance of 2 years for rising main network, sewer network , solar panel and allied works and operation and maintenance of 7 years for stps for porbandar underground drainage project, district porbandar, gujarat