1.	Air quality standards for mining areas
2.	National ambient air quality standards for India(CPCB)
2.	National ambient air quality standards(U.S. Environmental Protection Agency)
3.	Maximum permissible limits of pollutants in the air set by WHO
4.	Mass emission standards for diesel driven vehicles
5.	Emission limits for diesel vehicles
6.	Mass emission standards for petrol driven vehicles
7.	Emission limit for petrol driven vehicles
8.	Noise standards
9.	Noise limits for vehicles with effect from 1st January, 2003
10.	Maximum permissible limits for industrial effluent discharges
11.	Potable Water Quality Standards as Recommended by the WHO
12.	Physical Properties of Water
13.	Solubility of Oxygen in water (mg/L) at 1 atm pressure
14.	Standards for Effluents for Coal mines to be Discharged into Sewer, Stream, or Lands
15.	Primary water quality criteria for bathing water