<UPDATED> Allegheny Co. Health Department Issues Mon Valley Air Pollution Warning for Tuesday
The Liberty-Clairton area woke up to unhealthy air quality again Tuesday, with EPA’s NowCast AQI soaring to 183 and hourly monitor data...
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Blog Against Smog
- Mar 7, 2022
UPDATED: Allegheny Co. Health Dept. Issues $1.8 Million Fine Against U.S. Steel for H2S Emissions
Editor’s Note: The Allegheny County Health Department issued the following news release Monday morning. The release followed GASP’s...
- Mar 7, 2022
<UPDATED> No More Excuses for U.S. Steel: ACHD Finds Clairton Coke Works “Entirely” Responsibl
Editor’s Note: The Allegheny County Health Department today in a press release announced that it has fined U.S. Steel more than $1.8...
- Feb 22, 2022
<UPDATED> More H2S Exceedances at Liberty, Mon Valley Residents Report Stench
Editor’s Note: This blog was updated at 10:35 a.m. Feb. 23 to include an updated H2S chart. Users of CMU CreateLab’s crowd-sourcing app...
- Jan 24, 2022
2022's 4th Exceedance of PA’s H2S Air Quality Standard Noted in Mon Valley; Still No Word from ACHD
Sadly, if you live in the Mon Valley, this likely isn’t news: Air quality was terrible early Saturday, with AirNow.gov showing...
- Nov 22, 2021
Weekend Sees Yet Another H2S Exceedance for Mon Valley
Concentrations of the air pollutant known by its rotten-egg odor were high enough to exceed Pennsylvania’s 24-hour average of 0.005 ppm,...
- Jul 14, 2021
Board of Health Green Lights Episodic Weather Regulations for Mon Valley, Next Stop Allegheny County
Preceding the BOH vote was a special meeting of the Allegheny County Air Advisory Committee earlier this week, where minor language...
- Jun 7, 2021
More Unhealthy Air Quality, Exceedances Pervade Mon Valley – Update on H2S Problem Needed
The colorless gas is most commonly recognized by its “rotten egg” odor and concentrations exceeded the Pennsylvania 24-hour average...
- May 3, 2021
April Ends With Three More Air Quality Exceedances in the Mon Valley
Hydrogen sulfide (or H2S) is a colorless gas most commonly recognized by its “rotten egg” smell. The average concentration of H2S at the...
- Mar 15, 2021
Residents Tell Allegheny Co. Health Dept: Put Our Health Above Industry Profits with Strong Permits
The message was delivered again and again by residents during the more than 90-minute hearing: U.S. Steel needs to clean up its act, and...
- Feb 8, 2021
Advisory Committee Votes to Table Episodic Weather Regs, Health Department Says It Might Take it to
Draft episodic weather regulations long-sought by residents and air quality advocates could be sent out for public comment as soon as...
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