79. For the purposes of sections 75 and 76, paragraph 1 of section 77 and the first paragraph of section 78, the concentration of the contaminants emitted is expressed on a dry basis corrected to 7% oxygen according to the following formula:
E = Ea x 13.9
________
20.9 - A
where
“E” is the corrected concentration;
“Ea” is the concentration on a dry basis, uncorrected; and
“A” is the percentage of oxygen on a dry basis in the combustion gases at the sampling site.
For the purposes of the second paragraph of section 78, the concentration of the contaminants emitted is expressed on a dry basis corrected to 11% oxygen according to the following formula:
E = Ea x 9.9
________
20.9 - A
where
“E” is the corrected concentration;
“Ea” is the concentration on a dry basis, uncorrected; and
“A” is the percentage of oxygen on a dry basis in the combustion gases at the sampling site.