Section 77(2) in The Environment (Protection) Rules, 1986
(2)0.15 g/l by 31st December, 1996 (for entries country). 0.013 g/l by April 1995 (in four metro cities);by 1st December,1998(for all State capitals/UTs and major metro cities) and by 1st April, 2000 for the entire country.
