Neighbor News
Yet Another Air Quality Exceedance in Mon Valley
The newest air quality exceedance happened on a day when Clairton had the worst AQI in the nation.
It’s official: The Mon Valley will experience yet another air quality exceedance Thursday according to preliminary data from the Allegheny County Health Department (ACHD).
The air was so rotten Thursday that by 6 a.m. it was numerically impossible for the North Braddock and Liberty monitors *not* to exceed the state’s 24-hour hydrogen sulfide standard of 0.005 ppm – the seventh such exceedance so far this year.
There was also another insane one-hour value (0.081 ppm) at North Braddock – which is the second-worst one-hour value since Jan. 2016 for all ACHD h2s monitors.
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Consider this: “The 0.081 ppm peak today and the 0.077 ppm peak on March 3 are the second- and fourth-highest one-hour h2s readings over the past 5 years,” GASP staff attorney Ned Mulcahy noted. “That means two of the worst four hours over the past five years have occurred in the past three weeks in North Braddock.”
GASP again is calling on ACHD to better communicate these exceedances to the public and to make finding the source of these concerning H2S peaks a priority.