Amazon Data Services IAD-195, IAD-196, IAD-197, and IAD-198, Gainesville
approved CampusOperated by Amazon Data Services, Inc.
Virginia DEQ issued Amazon Data Services, Inc. a minor permit amendment (Registration No. 74277) on August 21, 2025 for emergency engine gen-sets at the four-building IAD-195 through IAD-198 campus in Gainesville, superseding the permit dated October 31, 2023. The equipment list covers 104 Caterpillar 3516C emergency gen-sets rated 2,500 ekW each, 4 Caterpillar C18 units at 600 ekW, and 2 Caterpillar 3516C transitory emergency units at 2,000 ekW.
Land use jurisdiction: Prince William County
Measurements on record
Permitting path
Approvals on record for 1 of 11 path steps; latest: DEQ air permit (generators) (2025-08-21).
Virginia's sequence runs through county land-use case records to DEQ air permits; rezonings and special use permits are the public record spine, and DEQ publishes the data-center air permit register.
| Date | Step | Authority | Instrument | Status |
|---|---|---|---|---|
| 2025-08-21 | DEQ air permit (generators) | Virginia Department of Environmental Quality | Article 6 minor NSR permit amendment, Registration No. 74277
Article 6 minor NSR permit amendment, Registration No. 74277 (original) |
on record |
| Site control (deed or lease) | not yet requested | |||
| Special use permit / site plan | Prince William County | not yet requested | ||
| Rezoning applies where the site's zoning does not already allow the use |
Prince William County | not yet requested | ||
| Natural gas service applies where the facility uses natural gas |
not yet requested | |||
| Utility interconnection (PJM queue) | not yet requested | |||
| Sewer service commitment | not yet requested | |||
| Water service commitment | not yet requested | |||
| Building permit | Prince William County | not yet requested | ||
| Stormwater (VSMP permit) applies where land disturbance passes permit thresholds |
Virginia Department of Environmental Quality | not yet requested | ||
| Public agreements and incentives applies where negotiated with the host jurisdiction |
Prince William County | not yet requested | ||
| Go-live | not yet live |
Steps without a record are shown as not yet requested or not on record: absence of a record here is a records gap, not a finding about the facility. An authority shown for an empty step is the body that would issue it. Some authorities are shown before any record exists, from mapped utility service areas or, for sewer service, from municipal limits; these carry a marker naming the basis.
Site control comes first in every path: a proponent must hold a deed, lease, or purchase option on every parcel of the site before it can apply. Parcel and ownership records have not yet been pulled for this facility.
About this path and the law behind each step: the law on record for this jurisdiction
Location and sources
Gainesville, Prince William County, Virginia
Every record links to its source: public records, press reporting, and openly licensed datasets including Epoch AI, Wikidata, and US EPA. Full sourcing and per-source licensing: methodology · sources.