Finally in chapter 5, findings of the present research work have been presented
and suggestions for mitigating the pollution problem in the state of Bihar have been
made. It is concluded that:
1. The plateau region experiences higher temperature than the plains except
Ranchi. This could lead to lesser concentrations of S02, NOx, NH3 and PAH
and higher concentration of 0 3 in April and August.
2. The relative humidity is highest in August followed by January, October and
least in April. S02 concentration could be higher in August and January. The
areas along plain region are more humid than the plateau region. More
humidity favours more acid mist if pollutants are released at the same time.
3. Lower concentration of particulates and other contaminants except S02 can be
expected during August at all stations.
4. In August, lower concentration of particulates and other contaminants may be
expected along the plateau region than the plains.
5. Better dilution of the pollutants leading to reduction in the ground level
concentration is expected in the plains compared to the plateau region of Bihar
due to stronger winds.
6. Morning hours have high pollution potential and low in the afternoon.
7. Better dispersal of pollutants can be expected in summer followed by
monsoon season and poor in winter followed by post-monsoon season at the
plains and plateau regions.
8. Areas near Patna and Ranchi have high pollution potential. Thus, new
industrial set up of polluting industries like chemical industries should be
discouraged strictly in these areas to minimise the effects of the pollution on
the environment and living organisms.