Emission standards for coal mines |
Pollutant |
Time wighted Avg. |
Concentration in Ambient Air |
Method of Measurement |
New
Coal Mines (Coal Mines coming up after Dec. 1998) |
Existing coal fields/mines
given below: Karanpura, Giridih,
Rajhara, Wardha, Nagpur, Silewara, Pench, Kanhan, Patharkhera, Urmer, Korba,
Chirimiri, Central India Coalfields (including Baikunthpur, Bisrampur),
Singrauli, Ib Valley, Tacher, and Godavary- Vally coalfields |
Old Coal Mines -Jharia
-Raniganj -Bokaro |
Suspended Particulate Matter (SPM) |
Annual Average* |
360 mg/m3 |
430 mg/m3 |
500 mg/m3 |
High
Volume Satmpling (Average flow rate not less than 1.1m3/minute) |
24
hours** |
500 mg/m3 |
600 mg/m3 |
700 mg/m3 |
Respirable Particulate Matter
(size less than 10 mm) (RPM) |
Annual Average* |
180 mg/m3 |
215 mg/m3 |
250 mg/m3 |
Respirable Particulate Matter Sampler |
24
hours** |
250 mg/m3 |
300 mg/m3 |
300 mg/m3 |
Sulphur Dioxide (SO2) |
Annual Average* |
80 mg/m3 |
80 mg/m3 |
80 mg/m3 |
Improved west and Gaeke
Method |
24
hours** |
120 mg/m3 |
120 mg/m3 |
120 mg/m3 |
Utraviolet fluorescene |
Oxide of Nitrogen as NO2 |
Annual Average* |
80 mg/m3 |
80 mg/m3 |
80 mg/m3 |
Jacob & Hochheiser
Modified (Na-Aresnic) Method |
24
hours** |
120 mg/m3 |
120 mg/m3 |
120 mg/m3 |
Gas phase Chemilumine-scence |
|
|
|
|
|
|
Note : *
: Annual Arithmatic mean for the measurements taken in a Year,
following guidelines for frequency of
sampling. |
|
|
: ** : 24 hourly / 8 hourly values
should met 98% of the time in a year. However 2% of the time it may exceed
but not no two consecutive days. |
1 - The ambient air quality standards shall
apply to the nearest residential /
commercial places (existing / lilely) on the leaward direction on the mining
and allied activities. |
2 -
Unauthorised construction will not be taken as a reference of nearest
residential / commercial place for monitoring. |
|
|
Source :
Environmental Standards for Ambient Air, Automobiles, Fuels, Industries
and Noise, Central Pollution Control Board, Ministry of Environment
& Forest. |
|
|
|
|
|
|