Investigation, soil exploration, preparation of designs, drawings and detailed estimates including necessary clearances for construction of 3 regulators across upputeru river under kolleru salinity mitigation project i.e. i) construction of regulator cum bridge cum lock on upputeru straight cut at km 1.400 in padatadika village limits ii) construction of regulator cum bridge cum lock on upputeru river at km 57.950(m36/0) in mollaparru village limits. and iii) construction of regulator across upputeru river at km 10.560 near dumpagadapa (v) of akividu (m) in .. including supply and fabrication of electro-mechanical works, transmission lines for power supply, protection works & strengthening of bunds for upputeru river and straight cut, dredging of upputeru river and straight cut under epc system