Velarion Records

EPA Air · stack tests by county and year

Air-emissions stack tests in Loudoun County, Virginia, 2017

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 Loudoun County, Virginia during 2017. 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 Loudoun County facility page.

Loudoun County, Virginia, 2017

Air-emissions stack tests in Loudoun County, other years

Air-emissions stack tests recorded in Loudoun County, Virginia, 2017

DateFacilityKindAgency
2017-11-29SUPERIOR PAVING CORP - BULL RUN HMA FACILITYPassState
2017-11-10DIGITAL REALTY - ASHBURN CAMPUSPassState
2017-09-27NTT GLOBAL DATA CENTERS AMERICAS, INC.FailState
2017-09-08AMAZON DATA SERVICES, INC. IAD 50 IAD 60 IAD-71 IAD-78 IAD-79 IAD-80PassState
2017-08-15EQUINIX LLCPassState
2017-08-04BHE GT&S - LOUDOUN COMPRESSOR STATIONPassState
2017-07-20EQUINIX, LLC - ASHBURNPassState
2017-05-23BHE GT&S - LEESBURG COMPRESSOR STATIONPassState
2017-04-28JANELIA RESEARCH CAMPUS - HHMIPassState
2017-04-28INTERGATE - ASHBURN, LLCPassState
2017-04-27DIGITAL LOUDOUN PKWY CENTER N LLCPassState
2017-04-24POTOMAC ENERGY CENTER LLCPassState
2017-03-01JANELIA RESEARCH CAMPUS - HHMIFailState
2017-02-08BHE GT&S - LEESBURG COMPRESSOR STATIONPassState

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 Loudoun, VA, in 2017. It lists 14 stack tests recorded in 2017.