Group Against Smog & PollutionApr 14, 20211 min readMon Valley Experiences Another H2S Exceedance Tuesday at Liberty Air Quality MonitorUpdated: Mar 25The 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.
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.