Chhattisgarh Environment Conservation Board has monitored noise level and ambient air quality in the 7 main cities namely Ambikapur, Bilaspur, Bhilai-Durg, Jagdalpur, Korba, Raipur and Raigarh during and after Deepawali 2013.
Links:
[1] http://admin.indiaenvironmentportal.org.in/data-statistics/noise-level-and-ambient-air-quality-monitoring-report-undertaken-during-festival
[2] http://admin.indiaenvironmentportal.org.in/category/publisher/chhattisgarh-environment-conservation-board
[3] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-quality-monitoring
[4] http://admin.indiaenvironmentportal.org.in/category/thesaurus/noise-pollution
[5] http://admin.indiaenvironmentportal.org.in/category/thesaurus/air-pollution
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/festival
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/chhattisgarh
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/statistics