eoi for preparation of der/dpr preparation of der/dpr for rehabilitation of the existing sewerage system and providing sewerage/septage management system for uncovered areas of thiruvananathapuram corporation , preparation of der/dpr after surveying , investigating , analyzing , planning , designing including preparing environmental impact assessment including social impact assessment comprising of detailed drawings and estimates for the most feasible solutions for sewerage and septage management in thiruvananthapuram corporation area including all men , material , equipments and expertise , engaging necessary staff reqired for the satisfactory completion of the der ( work includes submission of inception report at the end of first month , survey report with preliminary hydraulic model by the 3rd month , submission of comprehensive master plan by the 4th month , submission of detailed project report with eia and social impact assesment at the end of 6th month , submission of detailed project report with cost estimates , financial and economic analysis , drawings and bid documents for first priority projects by the 7th month , submission of detailed project report with cost estimates , financial and economic analysis , drawings , bid documents for remaining projects by the 8th month as detailed in the scope of assignment ( general and annexure i ) and as directed by the departmental officers . power point presentation also to be made after submission of each report . )