Velarion Records

EPA Air · stack tests by county and year

Air-emissions stack tests in Pima County, Arizona, 2020

A stack test measures what a source actually emits, at the stack, against the limit in its permit. Each row below is one stack test recorded against a source in Pima County, Arizona during 2020. A facility can appear several times: this is the year’s record of what happened, not a list of places. The sources themselves are on the Pima County facility page.

Pima County, Arizona, 2020

Air-emissions stack tests in Pima County, other years

Air-emissions stack tests recorded in Pima County, Arizona, 2020

DateFacilityKindAgency
2020-12-14FREEPORT-MCMORAN SIERRITAPassLocal
2020-10-28TUCSON ELECTRIC POWER CO (NORTH LOOP)PassLocal
2020-10-21FREEPORT-MCMORAN SIERRITAPassLocal
2020-06-22SFPP,LP - TUCSON TERMINALPassLocal
2020-06-11TUCSON ELECTRIC POWER-IRVINGTONPassLocal
2020-06-11TUCSON ELECTRIC POWER-IRVINGTONPassLocal
2020-05-28CALPORTLAND - RILLITO CEMENT PLANTPassState
2020-03-03CALPORTLAND - RILLITO CEMENT PLANTPassState
2020-03-03FREEPORT-MCMORAN SIERRITAPassLocal
2020-02-04CALPORTLAND - RILLITO CEMENT PLANTFailState

Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.

What this page shows

This page covers Clean Air Act facilities in the EPA air register with stack tests in Pima county, AZ, in 2020. It lists 10 stack tests recorded in 2020.