Amphoe Mae Mo, in which experiencing air pollution According to the law, the sulfur dioxide released from the stack must not be more than 320 ppm sulfur dioxide at the intensity. The monitoring station within 1 hour must not be more than 0.3 microgram per cubic meter or 780 ppm If the intensity is higher than. 0.15 ppm for 6 minutes, the power plant must reduce its capacity by at least 120 MW or sulfur dioxide until the intensity will go back to the normal level, which is less than 0.05 ppm image.
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