UPDATED: ACHD Announces Monitoring Failure Led to H2S & Sulfur Dioxide Data Removal; GASP Seeking Further Info
UPDATE: ACHD monitoring staff got back to GASP Wednesday afternoon with an update. The department said that multiple municipalities via...
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The Latest
Blog Against Smog
- May 8
- 3 min
GASP to Health Officials: Residents Deserve Answers on Mounting Mon Valley H2S Exceedances & What’s Being Done to Stop Days-Long Stench Episodes
The time for improved communications and increased transparency around Mon Valley’s H2S issue is NOW.
- May 2
- 3 min
Join GASP, Residents & Fellow Advocates to Speak Out on Mon Valley Stench; Demand Transparency on H2S Exceedance Problem
Residents deserve answers. And we’re hoping you can join GASP, residents & advocates at the upcoming Allegheny Co. Board of Health meeting.
- Jan 5
- 2 min
UPDATED: U.S. Steel Appeals $2.2 Million Fine for Hydrogen Sulfide Exceedances
Editor's Note: U.S. Steel on Jan. 26 appealed this enforcement order. You can read the appeal document here. The Allegheny County Health...
- Nov 21, 2023
- 3 min
By the Numbers: How GASP Will Put Your Giving Tuesday Donation to Work for All of Us
We know that you’ve probably received DOZENS of emails and have seen even more social media posts from local nonprofits asking for your...
- Nov 20, 2023
- 2 min
On the 12th Day of Stench-mas My Health Department Gave to Me… The Cold Shoulder
If you live in or near the Mon Valley, you have our condolences. The stench has been TERRIBLE lately. How terrible? Today marks the 12th...
- Nov 16, 2023
- 1 min
Here We Go Again: 8 Straight Days of Stench, H2S Exceedances - GASP *Again* Calls on ACHD for Update
Mon Valley friends beware, the stench is really bad today. In addition to starting off the day with one of the worst NowCast AQIs in the...
- Nov 6, 2023
- 2 min
Mon Valley Sees 5 Straight Days of H2S Exceedances & Stench; ACHD Remains Mum on Fix
It was a gorgeous weekend in Pittsburgh. There were blue skies, unseasonably warm temperatures, and plenty of sunshine. In the Mon...
- Oct 26, 2023
- 4 min
Stench Returns Despite Enforcement Efforts; GASP Again Calls on ACHD for Answers, Transparency
If you stepped outside this week in the Mon Valley, took a deep breath, and promptly asked yourself, “What is that STENCH?” we’ve...
- Aug 24, 2023
- 2 min
More H2S Exceedances in Mon Valley Beg Question: Why the Sharp Rise at N. Braddock Despite ET Deal?
If you’ve noticed a distinctive stank in and around the Mon Valley over the past week, Allegheny County Health Department (ACHD) air...
- Mar 16, 2023
- 3 min
GASP Joins U.S. Rep. Summer Lee, Officials & Advocates to Laud Air Quality Monitoring Investments
GASP was honored to join U.S. Rep. Summer Lee and fellow environmental and public health advocates for a press conference to celebrate...
- Mar 14, 2023
- 3 min
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...
- Feb 20, 2023
- 2 min
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,...
- Nov 2, 2022
- 2 min
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...
- Oct 14, 2022
- 2 min
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...
- Oct 12, 2022
- 3 min
Mon Valley Air Pollution Exceeded National Health Standard Tuesday, Stench Continues While ACHD Mum
UPDATE: Stench and elevated concentrations of H2S persisted Thursday at the Liberty air quality monitor. Another exceedance of...
- Oct 6, 2022
- 3 min
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...
- Nov 22, 2021
- 2 min
Weekend Sees Yet Another H2S Exceedance for Mon Valley
This marks the 46th day of 2021 when H2S exceeded that standard at the Liberty monitor.
- Nov 18, 2021
- 2 min
Abysmal Air Quality Returns to Mon Valley as Three More H2S Exceedances Noted
There have been 45 such exceedances at the Liberty monitor and 17 more at North Braddock.
- Nov 8, 2021
- 1 min
<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 PA's 24-hour average was guaranteed.
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