tender for sampling and testing of spm , so2 , nox , mercury in stack gas of diifferent unit ( from unit 1 to 10 ) drinking water and stp water at cpp , nalco angul ., stack flue gas so2 test: stack flue gas so2 ( sulphur dioxide ) test :- for sampling and analysis of stack gas for so2 sulphur dioxide ) in stack gas from each unit once in a month for each units for 02 years . , stack flue gas nox: stack flue gas nox ( oxides of nitrogen ) test for sampling and analysis of stack gas for nox ( oxides of nitrogen ) in stack gas from each unit once in a month for each units for 02 years . , stack flue gas emmission ( spm ) test: stack flue gas emission spm ( suspended particulate matter ) test . for sampling and analysis of spm in stack gas from each unit once in a month for each unit for 02 years . , stack flue gas mercury test: stack flue gas mercury test . sampling and analysis of stack gas for mercury in stack gas from each unit once in six ( 06 ) months for each units for 02 years . , sampling &analysis of drinking water: sampling & analysis of drinking water for sampling and analysis of drinking water from 02 ( two ) different points once in 6 months are to be tested as per is: 10500: 2012- physical , chemical , bacteriological , pesticide , organoleptic & radioactive elements for 02 years . , sampling &analysis of stp water: sampling & analysis of stp water samples for sampling and analysis of stp water samples for ph , bod , cod , tss , nh4-n , n-total , fecal coliform & phosphate once in every month for 02 years .