operation of sewage treatment plant ( stp ) of 500 cum / day capacity at surangani for 12 months . , operation of sewage treatment plant ( stp ) of 500 cumec / day capacity . , operation of sewage treatment plant ( stp ) of 500 cum . / day capacity by providing 01 no . supervisor / work munshi , 01 no . lab assistant & 04 nos . operators of highly skilled category and 04 nos . unskilled labour / helper to operate sewerage treatment plant in shifts . , providing work wear / dangri including stitching charges complete of required shade , hand gloves ( leather ) , rain coat , gum boots , pollution mask etc . ( ppe ) to the manpower engaged in the operation of sewage treatment plant at surangani . , epf ( including admin charges ) , esi / medi-claim / any other policy ( minimum sum assured rs . 1 lakh per person )