EPA Air · stack tests by county and year
Air-emissions stack tests in Loudoun County, Virginia, 2024
- 22Stack tests
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 2024. 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, 2024
Air-emissions stack tests in Loudoun County, other years
Air-emissions stack tests recorded in Loudoun County, Virginia, 2024
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2024-12-13 | DARAB VENTURES ONE, TWO, SIX LLC | Pass | State |
| 2024-11-07 | EQUINIX LLC | Pass | State |
| 2024-10-30 | AMAZON DATA SERVICES IAD-215 | Pass | State |
| 2024-10-18 | AMAZON DATA SERVICES, INC. IAD-51 IAD-56 IAD-88 IAD-89 | Pass | State |
| 2024-10-18 | DIGITAL REALTY - STERLING PREMIERE LLC | Pass | State |
| 2024-10-16 | DIGITAL REALTY (DIGITAL LOUDOUN 3 & 4, LLC) | Pass | State |
| 2024-10-16 | AMAZON DATA SERVICES INC IAD-169/179 | Pass | State |
| 2024-10-09 | VANTAGE DATA CENTERS VA2 LLC | Pass | State |
| 2024-09-27 | VANTAGE DATA CENTERS VA2 LLC | Pass | State |
| 2024-09-05 | YONDR DATA CENTER | Pass | State |
| 2024-08-09 | CYRUSONE STERLING IX/X/XI | Pass | State |
| 2024-07-19 | COMPASS IAD DATACENTER | Pass | State |
| 2024-04-30 | EQUINIX, LLC - ASHBURN | Pass | State |
| 2024-04-11 | DIGITAL REALTY (DIGITAL LOUDOUN 3 & 4, LLC) | Pass | State |
| 2024-04-05 | MWAA - WASHINGTON DULLES INTERNATIONAL AIRPORT | Fail | State |
| 2024-04-04 | YONDR DATA CENTER | Fail | State |
| 2024-03-15 | COMPASS IAD DATACENTER | Fail | State |
| 2024-03-06 | BHE GT&S - LOUDOUN COMPRESSOR STATION | Pass | State |
| 2024-02-22 | MICROSOFT BLUE RIDGE (IAD11-12-13) DATA CENTER | Pass | State |
| 2024-01-16 | CYRUSONE KINCORA | Pass | State |
| 2024-01-11 | CYRUSONE STERLING IX/X/XI | Fail | State |
| 2024-01-10 | CYRUSONE NORTHERN VIRGINIA DATA CENTER - MARIES ROAD | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.