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| 1982 || || Policy || Delhi passes its first Industrial Policy.<ref name="Pollution in Delhi : A Chronic Problem">{{cite web |title=Pollution in Delhi : A Chronic Problem |url=https://www.jagranjosh.com/current-affairs/pollution-in-delhi-a-chronic-problem-1510211965-1 |website=jagranjosh.com |accessdate=9 May 2019}}</ref>
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| 1985 || || Policy ({{w|air pollution}}) || The {{w|Supreme Court of India}} states veredict verdict to deal with the chronic problem of vehicular pollution in Delhi, one of the earliest stand taken by judiciary.<ref name="Pollution in Delhi : A Chronic Problem"/>
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| 1987 || || {{w|Air pollution}} || A survey estimates that 1172 tonnes of suspended particulate matter, hydrocarbons, sulphur dioxide, nitrogen oxides, carbon monoxide and other poisonous gases are spewed into the air in Delhi by industrial units, the various modes of transport and the power sector.<ref name="Air Pollutionf"/>
