Mon Valley Experiences Another H2S Exceedance Tuesday at Liberty Air Quality Monitor
- Group Against Smog & Pollution
- Apr 14, 2021
- 1 min read
Updated: Mar 25, 2024

The average concentration yesterday was 0.006 ppm, according to preliminary health department data. The state 24-hour standard is 0.005 ppm.
The Tuesday H2S exceedance was fifth so far this month at the Liberty monitor.

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