#NorthBraddockmonitor

Blog Against Smog

Tuesday Marked First Hydrogen Sulfide Exceedance of the Year for Allegheny County

Well, that didn’t take long: The first exceedance of Pennsylvania’s 24-hour average hydrogen sulfide (H2S) standard is already in the...

<UPDATED> Abysmal Air Quality Continues in the Mon Valley

For the third day in a row, hydrogen sulfide (H2S) levels were so high Tuesday that an exceedance of Pennsylvania’s 24-hour average was...

UPDATED: Mon Valley Experiences Another Air Quality Exceedance, GASP Asks Allegheny Co. Health Dept.

By 9 a.m. Monday, concentrations of hydrogen sulfide (H2S) were so high at Allegheny County Health Department’s air quality monitor in...