Washington Administrative Code
Title - Northwest Clean Air Agency
400 - STANDARDS
Sec2 451 - EMISSION OF AIR CONTAMINANT - VISUAL STANDARD
Universal Citation: WA Admin Code 451
Current through Register Vol. 24-18, September 15, 2024
451.1 No person shall cause or permit the emission, for any period aggregating more than 3 minutes in any 1 hour, of an air contaminant from any source which, at the point of emission, or within a reasonable distance of the point of emission, exceeds 20% opacity except as follows:
451.11
When the owner or operator of a source supplies valid data to show that the
opacity is in excess of 20% as a result of the presence of condensed water
droplets, and that the concentration of the particulate matter, as shown by a
source test approved by the Control Officer, is less than 0.10 grain/dscf (0.23
g/m3).
451.12 Excess emissions as a result of soot
blowing or grate cleaning shall not occur for more than fifteen minutes in any
eight hour period or another schedule approved by the Control Officer provided
that the owner or operator can demonstrate to the satisfaction of the Control
Officer that the time limitations of this subsection are not being
exceeded.
Disclaimer: These regulations may not be the most recent version. Washington may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
This site is protected by reCAPTCHA and the Google
Privacy Policy and
Terms of Service apply.
