EPA Air · stack tests by county and year
Air-emissions stack tests in Loudoun County, Virginia, 2023
- 19Stack 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 2023. 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, 2023
Air-emissions stack tests in Loudoun County, other years
Air-emissions stack tests recorded in Loudoun County, Virginia, 2023
| Date | Facility | Kind | Agency |
|---|---|---|---|
| 2023-12-14 | INTERGATE - ASHBURN, LLC | Pass | State |
| 2023-10-27 | AMAZON DATA SERVICES INC - IAD-163/164/174 | Pass | State |
| 2023-10-26 | NTT GLOBAL DATA CENTERS AMERICAS, INC. | Pass | State |
| 2023-10-24 | AMAZON DATA SERVICES, INC. IAD-140/141/143 | Pass | State |
| 2023-10-11 | DIGITAL REALTY (DIGITAL LOUDOUN 3 & 4, LLC) | Pass | State |
| 2023-10-11 | AMAZON DATA SERVICES INC IAD-161/162 | Pass | State |
| 2023-10-06 | ALIGNED ENERGY DATA CENTERS (ASHBURN), LLC | Pass | State |
| 2023-10-06 | DIGITAL WESTERN LANDS LLC | Pass | State |
| 2023-10-05 | COLOGIX ASH1 | Pass | State |
| 2023-10-04 | AMAZON DATA SERVICES INC IAD-120/121/122 | Pass | State |
| 2023-09-01 | LOUDOUN COUNTY SOLID WASTE MANAGEMENT FACILITY | Pass | State |
| 2023-07-21 | POTOMAC ENERGY CENTER LLC | Pass | State |
| 2023-04-30 | MICROSOFT CORPORATION â LEESBURG DATA CENTER (IAD01-02-03-04-05) — high-priority violation on file | Pass | State |
| 2023-04-24 | ALIGNED ENERGY DATA CENTERS (ASHBURN), LLC | Pass | State |
| 2023-04-20 | VANTAGE DATA CENTERS VA11, VA12, VA13, VA14, & VA15 | Pass | State |
| 2023-03-16 | BHE GT&S - LOUDOUN COMPRESSOR STATION | Pass | State |
| 2023-03-16 | POTOMAC ENERGY CENTER LLC | Pass | State |
| 2023-03-16 | DIGITAL REALTY (DIGITAL LOUDOUN 3 & 4, LLC) | Pass | State |
| 2023-01-12 | ASH2 LOCKRIDGE DATA CENTER - QTS INVESTMENT PROPERTIES ASHBURN II LLC | Pass | State |
Dates as filed by the agency that recorded the stack test. Figures from EPA’s ICIS-AIR download.