India, Oct. 22 -- The lackadaisical attitude of construction agencies and uncontrolled construction activities are among the key reasons for Delhi's worsening air quality.

The air quality index (AQI), as recorded by the Central Pollution?Control Board (CPCB), has been in the 'poor' category for the past two weeks.

Construction sites are required to regularly sprinkle water to settle the dust, pave roads leading to the sites and put up high barriers to cover the construction area. Construction agencies are also supposed to transport all debris, suitably covered, to a C&D waste plant, instead of leaving it lying around.

HT on Friday conducted a spot check at some of the main construction projects in the city.

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