Volume No. 10 Issue No.: 1 Page No.: 91-98 July-September 2015




Kumar Vijay

CPD - ILSP Uttarakhand, 3-Indira Nagar Forest Colony, Dehradun, Uttarakhand (INDIA)


Received on : February 15, 2015




Post Uttarakhand formation, development pressure has increased, reflecting the major land use changes in Doon Valley. Ambient Air Quality data on PM2.5 data released through WHO 2014 report puts Dehradun at 77 ?g/m3 more polluted than Beijing. Even PM10 data for Dehradun at 175 ?g/m3 is quite alarmingvis-à-vis India’s eco-sensitive zone standards and WHO standards. Current status of ambient air quality and noise levels for Dehradun is aimed in the paper along with analysis of trends. Linear median data for 3 sites during 34 months in 2012-2014 show that the Air Quality in Dehradun especially with reference to PM10 is exceeding the Indian standards by 2.5 to 3 times while with respect to WHO standards, it is almost 8 to 9 times which is quite disturbing from the health hazard point of view in Doon Valley eco-sensitive zone.Similar data for NO2 shows that the observed linear median values of 3 sites have increased from 24.5 to 29.5 ?g/m3 during 34 months in 2012-2014 vis-à-vis Indian standards of 20 ?g/m3.Observed noise levels on the other hand show a stable or declining trend during 2006-2014 but above the prescribed ambient noise standards under Environment Protection Rules, 1986 from 10 to 40% in various zones.Since registering vehicles are consistently rising, urgent remedial measures are needed to bring down PM10, NO2 and Noise levels in Doon Valley.


Keywords : Ambient Air Quality, Noise levels, Doon valley eco-sensitive zone, Registered vehicles, WHO standards