Investigators:Ajay Kr Singh,S B Sinha and Prof. Gurdeep Singh(1993-97)

Title	Objective(s)	Methodology	Conclusion/ Contribution made	Benefits
Assessment of air quality impact due to emission from Sindri Fertilizer Complex	1. To asses the ambient air quality and micro-meteorological conditions in the study area 2. To evaluate the emissions from major sources and apply the dispersion modelling with its subsequent validation	1. Inventory of emissions from all major sources prepared as per site inspection and our experience in the study area. 2. A network of tour ambient air quality was established and monitoring was carried out for SPM/NH3, SO2 and NOX 3. Dispersion modelling of input data and its validation on prediction levels of pollutants.	1. The study area reflected the pollution w.r.t. SPM/NH3 while SO2 and NOx remained within permissible levels. 2. Dispersion modelling for predicted ground level conc. Of pollutants upto a distance of 10 km in the down wind direction indicates a definite trend. The conce. Of SPM was observed higher while gaseous pollutants conc. Were lower than those of predicted grond level concentrations	Dispersion model as developed can help in planning and mgmt. Of emissions from the fertiliser complex