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Union of India - Section
Section 87 in The Environment (Protection) Rules, 1986
87. Emission Regulations for Rayon Industry:-
| Stack Height (H) requirement, m | Remarks |
| 11Q 0.41-3 Vs D/u | A minimum of 80 per cent. of total emission shall pass through stack. If the calculated stack height is less than 30m, a minimum height of 30m shall be provided. |
| Where | Q -CS2emission rate, kg/hr |
| VS - stack exit velocity, m/sec. | |
| D - diameter of stack, m. | |
| U - annual average wind speed at top of stack, m/sec. |