Table 1: Air quality
standards for mining areas
|
Category
|
Pollutant
|
Time weighted average
|
Concentration in Ambient Air
|
Method of Measurement
|
|
( I )
Category Pollutant Time weighted average Concentration in Ambient Air Method of Measurement |
Suspended Particulates Matter
(SPM)
|
Annual Average*
24 hours** |
360 µg/m3
500 µg/m3 |
High Volume Sampling (Average
flow rate not less than 1.1 m3/minute)
|
|
Respirable Particulate Matter
(size less than 10 µm) (RPM)
|
Annual Average*
24 hours** |
180 µg/m3
250 µg/m3 |
Respirable Particulate Matter
sampling and analysis
|
|
|
|
Annual Average*
24 hours** |
80 µg/m3
120 µg/m3 |
1. Improved West and Gaeke method
2. Ultraviolet fluorescence |
|
| Oxide of Nitrogen as NO2 | AnnualAverage* 24 hours** |
80 µg/m3
120 µg/m3 |
1.
Jacob & Hochheiser Modified (Na-Arsenic) Method 2. Gas phase Chemilumine-scence |
|
|
( II )
Existing coal fields/mines given below: Karanpura, Ramgarh, Giridih, Rajhara, Wardha, Nagpur, Silewara, Pench Kanhan, Patharkhera, Umrer, Korba, Chirimiri, Central India Coalfields (including Baikunthapur, Bisrampur), Singrauli, Ib Valley, Talcher, Godavary-Valley and any other coalfield |
Suspended
Particulates Matter (SPM) |
Annual
Average* 24 hours** |
430 µg/m3
600 µg/m3 |
High Volume Sampling (Average flow rate not less than 1.1 m3/minute) |
| Respirable
Particulate Matter (size less than 10 µm) (RPM) |
Annual
Average* 24 hours** |
215 µg/m3
300 µg/m3 |
Respirable Particulate Matter sampling and analysis | |
| Sulphur
Dioxide (SO2) |
Annual
Average* 24 hours** |
80 µg/m3
120 µg/m3 |
1.
Improved West and Gaeke method 2. Ultraviolet fluorescence |
|
| Oxide of Nitrogen as NO2 | Annual
Average* 24 hours** |
80 µg/m3
120 µg/m3 |
1.
Jacob & Hochheiser Modified (Na-Arsenic) Method 2. Gas phase Chemiluminescence |
| (
III ) Coal mines located in the coal- fields of- Jharia- Raniganj- Bokaro |
Suspended Particulates Matter (SPM) | Annual Average *24 hours** |
500 µg/m3
700 µg/m3 |
High Volume Sampling (Average flow rate not less than 1.1 m3/minute) |
| Respirable Particulate Matter (size less than 10 µm) (RPM) | Annual Average *24 hours** |
250 µg/m3
300 µg/m3 |
Respirable Particulate Matter sampling and analysis | |
| Sulphur Dioxide (SO2) | Annual Average *24 hours** |
80 µg/m3
120 µg/m3 |
1.
Improved West and Gaeke method 2. Ultraviolet fluorescence |
|
| Oxide of Nitrogen as NO2 | Annual
Average *24 hours** |
80 µg/m3
120 µg/m3 |
1.
Jacob & Hochheiser Modified (Na-Arsenic) Method 2. Gas phase Chemiluminescence |
Note: * Annual Arithmetic mean for the measurements
taken in a year, following the guidelines for frequency of sampling laid down
in clause 2.
** 24 hourly/8 hourly values shall be met 92% of the time in a year. However,
8% of the time it may exceed but not on two consecutive days.
Unauthorised construction shall not be taken as a reference of nearest residential
or commercial place for monitoring.