Thread by @bdevero

Hydrogen sulfide levels today at @GraphicPkg_Intl in Kalamazoo - higher activity today - hitting over 12-15 ppb at times

1.4 ppb is the level to avoid long term exposure of to protect health

Gas levels are elevated this morning at city parks nearby
#KzooAirQuality

Hydrogen sulfide data snapshot at
@KalamazooCity sludge: 12 ppb
Hospital: 6 ppb
Nearby city parks 4 ppb and 8 ppb
Graphic Packaging sits between the wastewater plant and the community, west of the city plant.
Experts: Avoid 1.4 ppb longterm to protect health
#KzooAirQuality

Elevated gas levels are seen regularly. Anecdotally, this morning we see more sensor activity than usual looking back at the past month of data.
Neighborhood residents waking up to elevated gas levels is quite common unfortunately.
#KzooAirQuality @KPCA2023

Some have suggested weather data must also be considered so here's a basic look at overnight in Kalamazoo (measured at the airport) - I am going to look into how this is factored in to the equation.

These snapshots captured calm winds this morning.

Note: This weather data starts on June 5 and goes backward so you can see what it was like last night also.
Source: w1.weather.gov/data/obhistory…
#KzooAirQuality