Assesment of air pollution in stone crusher industries: a case study of stone crushing industry situated in tehsil-Haldwani, dist. - Nainital, Uttrakhand
Student name: Ms Mounisha Samanta
Guide: Ms Ranjana Ray Chaudhuri
Year of completion: 2018
Host Organisation: Central Pollution Control Board (CPCB)
Supervisor (Host Organisation): Sh. D.S. Kharat
Abstract: The Stone Crushing Units are small scale industries mainly situated at the vicinity of any major or big cities. The Stone Crushing Unit is one the major sources of air pollution. They emit fine dust particulates during their different crushing, conveying and storing operations. Some cases regarding the air pollution caused by the stone crushing units of Haldwani and Lalkuan tehsil, was filed by the residents of that area to The National Green Tribunal (NGT). Hence to inspect the cases and to know the ground truth, the study has been conducted. It was including field work, observation, inspection and laboratory analysis. The 2 set of monitoring was conducted; Fugitive emission monitoring and Ambient air quality monitoring by High volume Sampler and Respirable Dust Sampler respectively. After the laboratory analysis of the both types of monitoring it was seen that the particulate matter (PM10) was coming very high in that area and some of the industries were also not complying the maximum permissible limit for fugitive dust emission (SPM) prescribed by CPCB. So, it can be determined that the high PM value of the ambient air is coming due to the high SPM value of the stone crushing unit. The SOx and NOx of the area came very less which was below the maximum permissible limit. So, the allegation was found to be true after the inspection and recommendations was given to the units to lower its emission value. Required measurements were also taken to resolve the issue.
Key words: Fugitive emission monitoring, Ambient air quality monitoring, High volume Sampler, Respirable Dust Sampler, SPM.
