<UPDATED> Allegheny County Air Quality Program Approves 10 Mon Valley Episode Rule Plans, Reje
Editor’s Note: The Allegheny County Health Department approved all six of the resubmitted plans on April 1, 2022. You can read more about...
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Blog Against Smog
- Feb 2, 2022
Allegheny County Health Department Tells U.S. Steel, Others that Mon Valley Air Pollution Mitigation
The Allegheny County Health Department (ACHD) has notified U.S. Steel and other major source polluters that emissions mitigation plans...
- 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...
- Jan 20, 2022
Rotten Egg Odor Returns Wednesday as Mon Valley Experiences 3rd 2022 Exceedance of PA’s Hydrogen Sul
This was one of the complaints filed with CMU’s SmellPGh app Wednesday. Wednesday marked the third time so far this year that...
- Jan 13, 2022
Allegheny County Health Department Releases 2020 Air Quality Report
Allegheny County Health Department (ACHD) in December 2021 provided its yearly analysis and summary of air quality monitoring data,...
- Jan 13, 2022
Mon Valley Sees 2nd Exceedance of PA Hydrogen Sulfide Air Quality Standard of the Year Wednesday
It was the second such exceedance of the year at that air quality monitor, according to preliminary data. As a reminder, H2S...
- Jan 10, 2022
Hearing Officer Issues Split Decision on Coke Oven Dispute Between the Allegheny County Health Depar
Remember back in September when famously litigious U.S. Steel asked an Allegheny County Health Department hearing officer to put the...
- Jan 6, 2022
U.S. Steel Issued Civil Penalty for Air Quality Violation Stemming from Clairton Coke Works Equipmen
Editor’s Note: This story was updated on Jan. 6 to correct an error regarding the volume of air pollutants emitted during the five-hour...
- Jan 5, 2022
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...
- Dec 30, 2021
Allegheny County Health Department Takes Enforcement Action Related to Asbestos Abatement & Mor
The Allegheny County Health Department (ACHD) periodically updates its website with recent Air Quality Program enforcement actions. That...
- Dec 21, 2021
UPDATED: Today Will Mark 54th H2S Exceedance of 2021 at Liberty Monitor; Abysmal Air Quality Returns
Editor’s Note: This blog was updated at 10:35 a.m. Wednesday, Dec. 22, 2021, to include information on an exceedance that occurred at...
- Dec 14, 2021
UPDATED: Unhealthy Air Quality Returns to Mon Valley as Allegheny County Experiences 51st H2S Exceed
Editor’s Note: This story was updated at 1-:17 a.m. Dec. 17 to include information and updated chart to reflect an H2S exceedance that...
- Nov 30, 2021
It’s Giving Tuesday: Here’s 7 Reasons to Give to GASP Today
After all these years with you fighting the good air quality fight, the difficult truth remains: Environmental advocacy is largely a...
- Nov 29, 2021
2 More H2S Exceedances for Mon Valley, Still No Word from ACHD on What’s Being Done to Stem Issue
That makes 48 days so far this year that H2S levels exceeded the air quality standard at the Liberty monitor. There have been 17 other...
- Nov 29, 2021
TOMORROW: Give to GASP this Giving Tuesday to Keep Up Momentum in Fight for Clean Air for ALL Allegh
Serious questions: When’s the last time you woke up in the wee hours of the morning choked by an industrial odor seeping in through your...
- 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,...
- Nov 18, 2021
Abysmal Air Quality Returns to Mon Valley as Three More H2S Exceedances Noted
The likely culprit? Another day with sky-high concentrations of hydrogen sulfide (called H2S for short, an air pollutant known by its...
- Nov 10, 2021
Allegheny County PM2.5 Levels Below Federal Standard but the Future is Still Hazy
The U.S. Environmental Protection Agency (EPA) in September announced that the agency intends to make a “Clean Data Determination”...
- Nov 7, 2021
Allegheny Co. Health Dept. Issues Mon Valley Air Pollution Warning as PM2.5 Concentrations Spike
Photo by GASP Board Member Roger Day Editor’s Note: This blog was updated at 4:20 p.m. Nov. 7 to include additional information from the...
- Nov 5, 2021
Mon Valley Sees 55th H2S Exceedance, Liberty-Clairton Air Quality Again Worst in Nation Friday
For a time this morning, AirNow.gov showed the Liberty-Clairton area as having the worst NowCast Air Quality Index (AQI) in the nation...
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