investigation, survey, design, supply, construction, installation, testing and commissioning of four (4) sewage treatment plants of total capacity of 4.20 mld (site-a - 0.90 mld, site-b - 1.40 mld, site-c - 1.00 mld, site-d - 0.90 mld at jakkampudi ulb of vijayawada municipal corporation) based on any appropriate technology (technology neutral) with post completion operation and maintenance of entire sewage treatment plants for 7 (seven) years including 02 (two) years defect liability period under epc system under pmay (hfa) (u) scheme at krishna district, andhra pradesh. .