The Energy and Resources Institute (Teri) plans to conduct a cost-benefit analysis of the different measures required to combat pollution in the NCR.
These measures, suggested as a part of the report of a source-apportionment study, will be carried out by Teri and Automotive Research Association of India to derive sectorial contributions to air pollution in NCR in August 2018.
The source-apportionment study suggested remedial measures such as enhanced LPG penetration to reduce biomass burning, use of agriculture residue in power plants to prevent crop burning and coal usage, and the stringent pollution standards for industries, among others.
“We will be doing a cost-benefit analysis of the different measures suggested as part of the report. We have a clear roadmap on what needs to be done, but how feasible are these measures in terms of cost is a question that needs to be answered,” Sumit Sharma, associate director, Earth Science and Climate Change Division, Teri, told TOI.
According to Sharma, along with the short-term measures that are already in place, there needs to be a push towards long-term measures. “The Graded Response Action Plan is in place since 2017. The plan was prepared on the directive of the Supreme Court after high pollution levels were recorded in the NCR in 2016. So every time the air gets fouler, measures are undertaken. Now, long-term plans also need to be looked at,” he said.
For example, the study pointed out that fugitive dust emissions from road, construction and demolition (C&D) activities have contributed to around 5%-15% in PM2.5 and PM10 concentrations in 2016. “In 2030, the share of this sector will increase to 8-21% for the two pollutants. Emission reduction potential of controls, such as vacuum cleaning of roads, wall-to-wall paving and use of barrier and water to control dust from construction and demolition (C&D) activities are assessed. Vacuum cleaning of road and wall-to-wall paving are assumed to have a reduction of 50% in silt content and 12% and 7% reduction in total PM10 and PM2.5 emissions of NCR, respectively,” it says.
The study also pointed out that control of dust from construction and demolition activities, with the help of barriers and water sprinkling, may reduce the total PM10 and PM2.5 emissions in NCR by 2% and 1%, respectively.
Data for the study was derived from 10 days of air quality monitoring in nine stations in Delhi, four in UP and seven in Haryana in winter and summer of 2016-17.
According to the finding, for PM2.5 concentration during winters, the average share of transport sector in Delhi varied from 28%. Industries contributed to 30%, while biomass burning (in residences and agricultural fields) contributed to 14%. Dust (soil, road, and construction) had a share of 17%.
During summer, the share of the transport sector is about 17% in Delhi. While industries contributed 22%, biomass burning in residences and agricultural fields contributed to 15%. Dust (soil, road, and construction) had a share of 38% in summers.
Other sources contribute to 11% in winters and 8% in the summer season, the study found out.
News Source: Times of India