You may already have the answer but a general emission rate equation is based upon the following formula.
ER = ppm * Mw * Qs * 1.557E-7
Where ER = lbs/hr
ppm = ppmdv
Qs = stack gas volumetric flow at 1 atm and 68 degF at associated humidity (DSCFM)
1.557E-7 wrapped up...
John Taylor is/was at the Univ of Colorado, Boulder, Dept of physics. Anyway--
A = first value
a = error of A
B = second value
b = error of b
C = result of A and B
c = propagated error of a and b
D = known constant w/o error
Example
Add
A + B = C
c = (a^2 + b^2)^0.5
Subtract
A - B = C...
I know this question has been around for a while, but there is a publication regarding how to handle errors. I came across it in a physics class and have found it to be useful. The title is An Introduction to Error Analysis: The Study of Uncertainties in Physical Measurements. It was written...