Sec. 231-13.8. Table 8—Maximum allowable increase in SO2 concentrations for gubernatorial variances

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Maximum Allowable Increase (Micrograms per cubic meter)
Terrain areas
Period of exposure Below 900 ft At or above 900 ft
24-hr maximum 36 62
3-hr maximum 130 221

	Terrain areas
Period of exposure	Below 900 ft	At or above 900 ft
24-hr maximum	36	62
3-hr maximum	130	221

                    
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