"(2) Average of 10 micron sized dust in time 24 hours shall not exceed 0.12 mg per cubic meter, and the arithmetic mean (Arithmetic Mean) in 1-year time must not exceed 0.05 mg per cubic meter.(3) the average of the total dust or particulates in the Micron size does not exceed 24 hours, 100 hours shall not exceed 0.33 mg per cubic meter, and the arithmetic mean (Arithmetic Mean) in 1-year time must not exceed 0.10 mg per cubic meter, "he said.
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