Port Authority of Allegheny County, Safe to Go plan: rider limits, designated waiting areas, face coverings, nightly disinfection (agency COVID-19 page) (Jan. 19, 2021) (Ex. MET-PIT-043)
Allegheny County Health Department, COVID-19 Guidance: Isolation and Quarantine Basics (updated August 24, 2021; posted as 08-26-21) (Aug. 24, 2021) (Ex. MET-PIT-014)
