- GRAP Stage I is implemented in Delhi-NCR when air quality index (AQI) enters the 'poor' category (201-300). - It includes dust mitigation measures at construction sites, ban on unapproved fuels, regular mechanical sweeping, and strict action on garbage burning. - The Commission for Air Quality Management (CAQM) oversees air pollution mitigation strategies in the National Capital Region. - Proactive implementation aims to prevent air quality from deteriorating further into 'Very Poor', 'Severe', or 'Severe+' categories. - **Graded Response Action Plan (GRAP):** A set of emergency anti-air pollution measures implemented in stages across the Delhi-NCR region depending on the worsening levels of the Air Quality Index (AQI). - **Commission for Air Quality Management (CAQM):** A statutory body created under a 2021 Act to coordinate, plan, and monitor air quality management and pollution control in Delhi-NCR and adjoining areas. - **Supreme Court of India:** The apex judicial body of India that exercises jurisdiction over public interest litigations and environmental matters, including directions on air pollution control in Delhi-NCR. **Introduction** The article explains the rules, implementation guidelines, and restrictions under Stage I of the Graded Response Action Plan (GRAP) in Delhi-NCR, which kicks in when air quality drops to the 'poor' category, focusing on dust control, vehicular emission checks, and anti-pollution mandates. **Core Issue and Detailed Points** - GRAP Stage I is implemented in Delhi-NCR when air quality index (AQI) enters the 'poor' category (201-300). - It includes dust mitigation measures at construction sites, ban on unapproved fuels, regular mechanical sweeping, and strict action on garbage burning. - The Commission for Air Quality Management (CAQM) oversees air pollution mitigation strategies in the National Capital Region. - Proactive implementation aims to prevent air quality from deteriorating further into 'Very Poor', 'Severe', or 'Severe+' categories. **Key Statutory Bodies, Acts & Concepts** - **Graded Response Action Plan (GRAP):** A set of emergency anti-air pollution measures implemented in stages across the Delhi-NCR region depending on the worsening levels of the Air Quality Index (AQI). - **Commission for Air Quality Management (CAQM):** A statutory body created under a 2021 Act to coordinate, plan, and monitor air quality management and pollution control in Delhi-NCR and adjoining areas. - **Supreme Court of India:** The apex judicial body of India that exercises jurisdiction over public interest litigations and environmental matters, including directions on air pollution control in Delhi-NCR.