Volume 15, Issue 57, 2026 (January – March)
Research Article
Industrial Air pollutants and Chemical Control Strategies: Insight from NCR-Delhi and Haryana
Hiteshi Gahlawat, Ravinder Singh
Keywords: Industrial pollution; OCEMS; GRAP; CAQM; HSPCB; NCAP; NCR-Delhi; Haryana; DG
emissions; hotspot management.
DOI:10.37273/chesci.cs032056121
Abstract
The present case study evaluates government policies and implementation steps used to control pollutants from factories in NCR-Delhi and Haryana. The study integrates primary survey data (factory managers, workers, pollution officials, residents) with up-to-date secondary sources including CAQM orders, CPCB/National Clean Air Programme material, CSE industrial-assessment reports, Haryana’s State Environment Plan (SEP), and recent technical studies on diesel generator emissions. The paper finds that while Delhi-NCR’s interventions prioritize real-time monitoring (OCEMS), emergency responses (GRAP), and hotspot action plans, Haryana has developed a strategic State Environment Plan focused on non-CO₂ pollutants and is actively upgrading industrial monitoring but faces implementation gaps (monitoring station downtime, under-utilised NCAP funds in some districts, and persistent DG pollution). The study concludes with targeted recommendations: universal OCEMS for medium industries, outcome-based emission standards, finance for SME upgrades, stronger cross-state data integration, and community-facing transparency dashboards.
References
[1] Press Information Bureau / CAQM press release on OCEMS identification (PIB / CAQM, 2025). Press Information Bureau
[2] Commission for Air Quality Management (CAQM). Graded Response Action Plan (GRAP) orders and GRAP document. Commission for Air Quality Management+1
[3] Government of NCT of Delhi Air Pollution Control at Pollution Hotspots (Hotspot list and action plans). Department of Environment Delhi+1
[4] Haryana State Environment Plan (SEP, 2025) IGSD/TERI / HSPCB collaboration announcement and SEP document. igsd.org+1
[5] CSTEP study and press reporting — DG emissions in Haryana (2022 estimate: ~1,121 tonnes PM₂.₅). The Times of India
[6] Press reporting on NCAP fund use in Faridabad (under-utilisation and sectoral spend patterns). The Times of India
[7] CPCB / CAQM monitoring reports ambient monitoring data and gaps (CPCB AQ-NCR reports). Central Pollution Control Board+1
[8] Centre for Science and Environment (CSE) assessment of industrial air pollution in Delhi-NCR (scoping/cluster assessments). cseindia.org+1
[9] CAQM website & policy pages on regional policy and OCEMS cell overview.
How to cite this article: Hiteshi Gahlawat, Ravinder Singh. Industrial Air pollutants and Chemical Control Strategies: Insight from NCR-Delhi and Haryana. Chem Sci Rev Lett 2026; 15(57).
Licence: This is an open access article distributed under the terms of the Creative Commons Attribution 3.0 License (CC BY 3.0), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited.