Tender For providing of air quality monitoring service - indoor area; plant, collection and analysis of flue gas ex refinery unit stacks; once in two months,air quality monitoring service - indoor area; plant, collection and analysis of incinerator flue gas; once in two months,air quality monitoring service - indoor area; plant, collection and analysis of incinerator flue gas; once in six months,air quality monitoring service - indoor area; plant, collection and analysis of flue gas ex. diesel genset engine stacks; yearly,air quality monitoring service - indoor area; plant, collection and analysis of treated effluent; monthly,air quality monitoring service - indoor area; plant, collection and analysis of ground water; yearly