Three days after Mulund’s Air Quality Index (AQI) touched a ‘poor’ level of 286, local BJP MLA Mihir Kotecha has alleged that the ongoing construction of Metro Line-4 is the biggest contributor to the spike, with large sections of LBS Road turning into a dumping yard.

Kotecha said that a review conducted after the November 27 AQI spike revealed that dust and unattended construction debris from Metro Line-4 works had significantly deteriorated air quality. “For the last 4–5 months, piles of scrap, cement-concrete blocks, soil, sand and debris have been lying across LBS Road without clearance,” he said.