Page-cited permit extraction

H5 Data Centers - Ashburn

Loudoun Co., Virginia

QA status Machine-extractedRelease dated July 29, 2026

EVIDENCE NOTE

What the public record says

A machine-extracted candidate of equipment groups and permit limits stated in Virginia DEQ permit 74276-1, 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.

MACHINE-EXTRACTED CANDIDATE

Equipment and limits,
kept separate from actual use.

These page-cited rows are machine-extracted and still require a second manual review. Verify every reused value against the linked official PDF. Page numbers refer to the one-based position in the linked PDF. Blank values are not zero.

Permitted equipment

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

ReferenceEquipment / modelCount / ratingFuel / controlsStated operating fieldSource
EG1 through EG26emergency engine generator setCaterpillar · 3516E26 units3000 kW eachdiesel fuel oilSee operating-scope tablep. 4Machine-extracted from an official document equipment table; column grouping requires second review.

Operating scope

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

ReferenceLimitBasisSource
EG1 through EG2624 hours/yearl to 100, operation of each unit (which involves fuel combustion) shall be minimized to the maximum extent practical. (9VAC5-80-1180) 7. Operating Hours – Each individual emergency diesel engine gen-set (Ref. Nos. EG1 through EG26) shall not operate more than 24 hours per year for scheduled maintenance checks and readiness testing (Scheduled MCRT, as provided in Condition 3.c). Each individual emergency diesel engine gen-set (Ref. Nos. EG1 through EG26) shall not operate more than 500 hours pMachine-extracted normative operating-hours statement; second review pending.p. 7
EG1 through EG26500 hours/yearEG26) shall not operate more than 24 hours per year for scheduled maintenance checks and readiness testing (Scheduled MCRT, as provided in Condition 3.c). Each individual emergency diesel engine gen-set (Ref. Nos. EG1 through EG26) shall not operate more than 500 hours per year for all purposes (as provided in Condition 3) combined. The emergency diesel engine gen-sets (Ref. Nos. EG1 through EG26) combined shall not operate more than 2,600 hours per year for all purposes (as provided in ConditMachine-extracted normative operating-hours statement; second review pending.p. 7
EG1 through EG26600 hours/yeardiesel engine gen-set (Ref. Nos. EG1 through EG26) shall not operate more than 500 hours per year for all purposes (as provided in Condition 3) combined. The emergency diesel engine gen-sets (Ref. Nos. EG1 through EG26) combined shall not operate more than 2,600 hours per year for all purposes (as provided in Condition 3) combined. The annual limits for hours of operation shall be calculated monthly as the sum of each consecutive 12-month period. Compliance for the consecutive 12-month periodMachine-extracted normative operating-hours statement; second review pending.p. 7

Permitted emission limits

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

Inspect 10 transcribed limit rows
ReferencePollutantLimitBasis / scopeSource
Hourly LimitNOx as NO258.11 lb/hrhourlyper unitp. 9Machine-extracted from an official permit limit table; header grouping requires second review.
Annual Limit (units combined)NOx as NO275.54 tpyannualcombinedp. 9Machine-extracted from an official permit limit table; header grouping requires second review.
Hourly LimitNOx as NO211.62 lb/hrhourlyper unitp. 9Machine-extracted from an official permit limit table; header grouping requires second review.
Annual Limit (units combined)NOx as NO215.11 tpyannualcombinedp. 9Machine-extracted from an official permit limit table; header grouping requires second review.
Hourly LimitVOC0.58 lb/hrhourlyper unitp. 9Machine-extracted from an official permit limit table; header grouping requires second review.
Annual Limit (units combined)VOC0.76 tpyannualcombinedp. 9Machine-extracted from an official permit limit table; header grouping requires second review.
Hourly LimitPM100.92 lb/hrhourlyper unitp. 9Machine-extracted from an official permit limit table; header grouping requires second review.
Annual Limit (units combined)PM101.19 tpyannualcombinedp. 9Machine-extracted from an official permit limit table; header grouping requires second review.
Hourly LimitPM2.50.92 lb/hrhourlyper unitp. 9Machine-extracted from an official permit limit table; header grouping requires second review.
Annual Limit (units combined)PM2.51.19 tpyannualcombinedp. 9Machine-extracted from an official permit limit table; header grouping requires second review.

DOCUMENT HISTORY

What this document says it changes

permit to construct and operate

No superseded-document date is asserted beyond the cited source wording.

p. 1, p. 3

QA NOTES

Ambiguity stays visible

  • Machine-extracted candidate. Verify every reused value against the cited official PDF page.
  • Verify table column grouping and any alternative models.
  • Confirm whether the limit is per unit, combined, or limited to testing/maintenance.
  • Confirm multi-row and merged-column header association.
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