H2S | GASP

Blog Against Smog

Health Department Launches H2S Dashboard Following Recent Calls from GASP to Ramp Up Transparency

Allegheny County Health Department on Tuesday announced it has launched a new dashboard dedicated to tracking hydrogen sulfide - a move...

Rotten Egg Stench & Poor Air Quality Return to Mon Valley

Local residents took to CMU CREATE Lab’s Smell PGH app Monday morning to sound off about poor air quality and its associated stench,...

GASP to Board of Health: Time to Review & Adjust Mon Valley Episode Rule, Take Action on H2S is NOW

GASP joined residents and fellow advocates Wednesday to tell the Allegheny County Board of Health that October’s abysmal air quality is...

Here's What the Post-Gazette Editorial Board Got Wrong About the Mon Valley's H2S Problem

At GASP, sometimes we read commentaries on air quality so bereft of facts, insight, and empathy that we must respond. The Oct. 18...

How Bad has Air Quality Been? H2S Was Below PA Standard For Only 3 Hours This Week

GASP crunched the numbers and can tell you definitively that in the Mon Valley (and downwind of it) the stench has been UNRELENTING this...

Another Abysmal Air Quality Day in Mon Valley: Fine Particulates *AND* H2S Elevated Today

On what otherwise is a beautiful fall day for many residents of southwest Pennsylvania, air quality in the Mon Valley is abysmal Tuesday,...

2nd Day in a Row of Skyrocketing H2S for Mon Valley, 5th Exceedance of PA 24-Hour Standard in 6 Days

UPDATE: Poor air quality is expected to continue in the Mon Valley. While the Allegheny County Health Department did not address the most...

UPDATE: PA’s 1-Hr H2S Standard Exceeded in Mon Valley for 1st Time Since ‘15; GASP Demands Answers

Editor's Note Update #2: The Allegheny County Health Department issued a follow-up public alert regarding hydrogen sulfide levels at the...