| Pollutants | Methods of Measurement | BIS Method No. | Time Weighted Average |
| Suspended Particulate Matter (PM100) | Respirable Dust Sampler | IS- 5182 (part 4) 1973 | 24 hourly |
| Respirable Suspended Particulate Matter (PM10) | Respirable Dust Sampler | IS- 5182 (part 4) 1973 | 24 hourly |
| Sulphur Dioxide (SO2) | Improved West and Gaeke | IS- 5182 (part 2) 1969 | 24 hourly |
| Oxides of Nitrogen (NOx) | Sodium Arsenite | IS- 5182 (part 6) 1975 | 24 hourly |
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