Reference Source

Armstrong County, PENNSYLVANIA — Sulfur Dioxide (2010) nonattainment — Indiana, PA

What is the pollutant / naaqs for Armstrong County, PENNSYLVANIA — Sulfur Dioxide (2010) nonattainment — Indiana, PA?

For Armstrong County, PENNSYLVANIA, pollutant / naaqs is Sulfur Dioxide (2010); nonattainment area name is Indiana, PA; partial county is yes; data current as of is September 30, 2026, recorded from its source on 2026-10-05.

Armstrong County | Sulfur Dioxide (1971) | * | Armstrong County: Madison, Mahoning, Boggs, Washington, Pine, PA | Sulfur Dioxide (2010) | * | Indiana, PA

— www3.epa.gov, retrieved 2026-10-05

Row ID
indiana-pa our reading
State
PENNSYLVANIA our reading
County or area
Armstrong County verified
Pollutant / NAAQS
Sulfur Dioxide (2010) verified
Partial county
yes our reading
Nonattainment area name
Indiana, PA verified
Data current as of
September 30, 2026
Sourcewww3.epa.gov
Verified
Review by
DatasetCurrent EPA nonattainment county designations by pollutant

Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.

Source

Last verified against source: . Due for re-check by . This page as Markdown · OKF bundle · full dataset as JSON.