Velarion Records

EPA Air · stack tests by county and year

Air-emissions stack tests in Maricopa County, Arizona, 2021

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 Maricopa County, Arizona during 2021. 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 Maricopa County facility page.

Maricopa County, Arizona, 2021

Air-emissions stack tests in Maricopa County, other years

Air-emissions stack tests recorded in Maricopa County, Arizona, 2021

DateFacilityKindAgency
2021-12-16INTEL CORP - OCOTILLO CAMPUS — high-priority violation on filePassLocal
2021-12-10SOLANA GENERATING STATIONPassLocal
2021-11-10REAL ALLOY ARIZONAPassLocal
2021-09-29VULCAN MATERIALS — high-priority violation on filePassLocal
2021-08-31CMC STEEL FABRICATORSPassLocal
2021-08-19APS REDHAWK GENERATING FACILITYPendingLocal
2021-08-18ARLINGTON VALLEY — high-priority violation on filePassLocal
2021-08-12INSULFOAM — high-priority violation on fileFailLocal
2021-08-12APS WEST PHX POWER PLANTPassState
2021-07-09SALT RIVER PROJECT - AGUA FRIA GENERATING STATIONPassState
2021-06-29UNITED DAIRYMEN OF ARIZONAPassState
2021-06-29SALT RIVER PROJECT - SANTAN GENERATING STATIONPassState
2021-06-29NEW HARQUAHALA GENERATINGPassState
2021-06-29GILA RIVER POWER STATION — high-priority violation on filePassState
2021-06-21QUIKJET - MONROE I & II TERMINALS — high-priority violation on filePendingState
2021-06-21INTEL CORP - OCOTILLO CAMPUS — high-priority violation on filePendingLocal
2021-06-08NORTHWEST REGIONAL LANDFILLPassLocal
2021-05-26SALT RIVER PROJECT - KYRENE GENERATING STATION — high-priority violation on filePassLocal
2021-05-21MESQUITE GENERATING STATIONPassLocal
2021-05-20APS OCOTILLO POWER PLANTPassLocal
2021-05-13SFPP-PHOENIX TERMINALPassLocal
2021-04-07SOLANA GENERATING STATIONPassLocal
2021-02-25CMC STEEL FABRICATORSPassLocal
2021-02-17VULCAN ASPHALTPassState
2021-02-11MESQUITE GENERATING STATIONPassState
2021-02-10SFPP-PHOENIX TERMINALPassLocal

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 Maricopa county, AZ, in 2021. It lists 26 stack tests recorded in 2021.