Page-verified permit transcription

Amazon Data Services, Inc. IAD-6 IAD-13 IAD-54

Loudoun County, Virginia

QA status VerifiedRelease dated July 29, 2026

EVIDENCE NOTE

What the public record says

A manually verified transcription of equipment groups and permit limits stated in Virginia DEQ permit 73355-21, with one-based PDF page citations. Permitted terms do not establish actual operation or emissions.

Primary sourceVirginia DEQ permit document

Virginia Department of Environmental Quality

Open original source ↗

Summary fields cite p. 1, p. 3.

What this record does not establish

The source confirms the document and its stated fields. This profile does not infer actual emissions, compliance history, operating status, facility capacity or environmental impact where those facts are not established by the cited document.

How to read the status

Issued means the agency granted the permit subject to its conditions. It does not mean every permitted unit is operating, that maximum permitted emissions occur, or that later amendments do not exist.

VERIFIED PERMIT TERMS

Equipment and limits,
kept separate from actual use.

This is a conservative transcription of reviewed permit sections, not an exhaustive legal digest. Page numbers refer to the one-based position in the linked PDF. Blank values are not zero.

Permitted equipment

5 document-defined equipment groups. Counts and per-unit ratings are transcribed; combined capacity is not calculated.

ReferenceEquipment / modelCount / ratingFuel / controlsStated operating fieldSource
IAD-6 Generator 1 and 4engine-generator setCaterpillar · 3516C-HD2 units2500 kW eachdiesel0.0015% by weight (15 ppm)500 hourshours/year; no single unit; consecutive 12-month periodp. 4, p. 9
IAD-54 Generator 20-24engine-generator setCaterpillar · 3516C-HD5 units2500 kW eachdiesel0.0015% by weight (15 ppm)500 hourshours/year; no single unit; consecutive 12-month periodp. 4, p. 9
Transitory Generator 1-4emergency engine-generator setCaterpillar · 3516C4 units2000 kW eachdiesel0.0015% by weight (15 ppm)500 hourshours/year; no single unit; consecutive 12-month periodp. 5, p. 9
IAD-13 Generator 1-17engine-generator setCaterpillar · 3516C-HD17 units2500 kW eachdiesel0.0015% by weight (15 ppm)500 hourshours/year; no single unit; consecutive 12-month periodp. 6, p. 9
IAD-13 Generator 18-19engine-generator setMTU · 16V4000G83L2 units2500 kW eachdiesel0.0015% by weight (15 ppm)500 hourshours/year; no single unit; consecutive 12-month periodp. 6, p. 9

Operating scope

Authorized hours, time windows or an explicit finding that no numeric annual-hour cap was located in the reviewed sections.

ReferenceLimitBasisSource
IAD-6 Generator 1 and 4500 hours/yearhours/year; no single unit; consecutive 12-month periodPermitted operating-hours field transcribed in the verified pilot equipment table.p. 4, p. 9
IAD-54 Generator 20-24500 hours/yearhours/year; no single unit; consecutive 12-month periodPermitted operating-hours field transcribed in the verified pilot equipment table.p. 4, p. 9
Transitory Generator 1-4500 hours/yearhours/year; no single unit; consecutive 12-month periodPermitted operating-hours field transcribed in the verified pilot equipment table.p. 5, p. 9
IAD-13 Generator 1-17500 hours/yearhours/year; no single unit; consecutive 12-month periodPermitted operating-hours field transcribed in the verified pilot equipment table.p. 6, p. 9
IAD-13 Generator 18-19500 hours/yearhours/year; no single unit; consecutive 12-month periodPermitted operating-hours field transcribed in the verified pilot equipment table.p. 6, p. 9

Permitted emission limits

5 pollutant, unit-group and limit rows. These are permit terms, not measured or actual emissions.

Inspect 5 transcribed limit rows
ReferencePollutantLimitBasis / scopeSource
all engine-generator setsNOx as NO279.4 tpyannualcombinedp. 12
all engine-generator setsCO13.0 tpyannualcombinedp. 12
all engine-generator setsVOC5.8 tpyannualcombinedp. 12
all engine-generator setsPM103.3 tpyannualcombinedp. 12
all engine-generator setsPM2.53.3 tpyannualcombinedp. 12

DOCUMENT HISTORY

What this document says it changes

permit amendment

Explicitly supersedes the document dated 2013-07-26.

p. 1, p. 3

QA NOTES

Ambiguity stays visible

  • Official PDF cover/permit heading checked in the manual second pass.
  • Value transcribed from official permit equipment/condition table; no totals calculated.
  • Directly stated permitted limit; not an actual emissions value.
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