Page-cited permit extraction

Vantage Data Centers VA2 LLC

Loudoun Co., Virginia

QA status Second-reviewedRelease dated July 29, 2026

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EVIDENCE NOTE

What the public record says

A machine extraction that passed a second manual review of equipment groups and permit limits stated in Virginia DEQ permit 74242-2, 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.

SECOND-REVIEWED EXTRACTION

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

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

Reference	Equipment / model	Count / rating	Fuel / controls	Stated operating field	Source
`EG-10 through EG-49`	emergency engine generator setCaterpillar · 3516E	— units2750 kW each	diesel fuel oil—	See operating-scope table—	p. 5 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`EP-BS1 and EP- BS2`	engine generator setCaterpillar · 3516E	2 units2750 kW each	diesel fuel oil—	See operating-scope table—	p. 5 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`EG-01 through EG-09`	emergency engine generator setCaterpillar · 3516E	9 units2750 kW each	diesel fuel oil—	See operating-scope table—	p. 5 ↗Machine-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.

Reference	Limit	Basis	Source
`EG-01 through EG-49`	29 hours/year	Vantage Data Centers Registration Number: 74242 September 15, 2023 Page 9 shall not operate more than 29 hours per year for scheduled maintenance checks and readiness testing (Scheduled MCRT) (as provided in Conditions 5.d. and 6.c.). Each individual emergency diesel engine gen-set (Ref. Nos. EG-01 through EG-49) shall not operate more tMachine-extracted normative operating-hours statement; second review pending.	p. 11 ↗
`EG-01 through EG-49`	500 hours/year	operate more than 29 hours per year for scheduled maintenance checks and readiness testing (Scheduled MCRT) (as provided in Conditions 5.d. and 6.c.). Each individual emergency diesel engine gen-set (Ref. Nos. EG-01 through EG-49) shall not operate more than 500 hours per year for all purposes (as provided in Condition 5) 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. 11 ↗

Permitted emission limits

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

Inspect 34 transcribed limit rows

Reference	Pollutant	Limit	Basis / scope	Source
`Caterpillar Model 3516E (Ref. Nos. EG-01 through EG-49 and EP-BS1 and EP-BS2)`	NOx as NO2—	53.48 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Caterpillar Model 3516E (Ref. Nos. EG-01 through EG-49 and EP-BS1 and EP-BS2)`	NOx as NO2—	10.34 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Caterpillar Model 3516E (Ref. Nos. EG-01 through EG-49 and EP-BS1 and EP-BS2)`	VOC—	0.89 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Caterpillar Model 3516E (Ref. Nos. EG-01 through EG-49 and EP-BS1 and EP-BS2)`	PM—	0.62 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Caterpillar Model 3516E (Ref. Nos. EG-01 through EG-49 and EP-BS1 and EP-BS2)`	PM10—	0.83 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Caterpillar Model 3516E (Ref. Nos. EG-01 through EG-49 and EP-BS1 and EP-BS2)`	PM2.5—	0.83 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Caterpillar Model 3516E (Ref. Nos. EG-01 through EG-49 and EP-BS1 and EP-BS2)`	SO2—	0.04 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`All Operations (Ref. Nos. EG-01 through EG-49 and EP-BS1 and EP-BS2) (All Units Combined)`	NOx as NO2—	95.00 tpyannual	combined—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`All Operations (Ref. Nos. EG-01 through EG-49 and EP-BS1 and EP-BS2) (All Units Combined)`	NOx as NO2—	39.41 tpyannual	combined—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`All Operations (Ref. Nos. EG-01 through EG-49 and EP-BS1 and EP-BS2) (All Units Combined)`	VOC—	5.28 tpyannual	combined—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`All Operations (Ref. Nos. EG-01 through EG-49 and EP-BS1 and EP-BS2) (All Units Combined)`	PM—	2.41 tpyannual	combined—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`All Operations (Ref. Nos. EG-01 through EG-49 and EP-BS1 and EP-BS2) (All Units Combined)`	PM10—	2.77 tpyannual	combined—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`All Operations (Ref. Nos. EG-01 through EG-49 and EP-BS1 and EP-BS2) (All Units Combined)`	PM2.5—	2.77 tpyannual	combined—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`All Operations (Ref. Nos. EG-01 through EG-49 and EP-BS1 and EP-BS2) (All Units Combined)`	SO2—	0.07 tpyannual	combined—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`TG-01 through TG-08`	NOx as NO2uncontrolled	6.32 lb/hrhourly	per unit—	p. 14 ↗Manually transcribed from Condition 18. The subsequent measured-VOC-dependent formula is intentionally excluded.
`TG-01 through TG-08`	NOx as NO2controlled	1.41 lb/hrhourly	per unit—	p. 14 ↗Manually transcribed from Condition 18. The subsequent measured-VOC-dependent formula is intentionally excluded.
`TG-01 through TG-08`	COuncontrolled	6.42 lb/hrhourly	per unit—	p. 14 ↗Manually transcribed from Condition 18. The subsequent measured-VOC-dependent formula is intentionally excluded.
`TG-01 through TG-08`	COcontrolled	1.07 lb/hrhourly	per unit—	p. 14 ↗Manually transcribed from Condition 18. The subsequent measured-VOC-dependent formula is intentionally excluded.
`TG-01 through TG-08`	VOCuncontrolled	1.22 lb/hrhourly	per unit—	p. 14 ↗Manually transcribed from Condition 18. The subsequent measured-VOC-dependent formula is intentionally excluded.
`TG-01 through TG-08`	VOCcontrolled	1.22 lb/hrhourly	per unit—	p. 14 ↗Manually transcribed from Condition 18. The subsequent measured-VOC-dependent formula is intentionally excluded.
`TG-01 through TG-08`	PM—	1.61 lb/hrhourly	per unit—	p. 14 ↗Manually transcribed from Condition 18. The subsequent measured-VOC-dependent formula is intentionally excluded.
`TG-01 through TG-08`	PM10—	1.61 lb/hrhourly	per unit—	p. 14 ↗Manually transcribed from Condition 18. The subsequent measured-VOC-dependent formula is intentionally excluded.
`TG-01 through TG-08`	PM2.5—	1.61 lb/hrhourly	per unit—	p. 14 ↗Manually transcribed from Condition 18. The subsequent measured-VOC-dependent formula is intentionally excluded.
`TG-01 through TG-08`	SO2—	0.55 lb/hrhourly	per unit—	p. 14 ↗Manually transcribed from Condition 18. The subsequent measured-VOC-dependent formula is intentionally excluded.
`All Operations (Ref. Nos. EG-01 through EG-49, EP-BS1, EP-BS2, and TG-01 through TG-08) (All Units Combined)`	NOx as NO2—	95.00 tpyannual	combined—	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`All Operations (Ref. Nos. EG-01 through EG-49, EP-BS1, EP-BS2, and TG-01 through TG-08) (All Units Combined)`	NOx as NO2—	41.76 tpyannual	combined—	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`All Operations (Ref. Nos. EG-01 through EG-49, EP-BS1, EP-BS2, and TG-01 through TG-08) (All Units Combined)`	VOC—	42.87 tpyannual	combined—	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`All Operations (Ref. Nos. EG-01 through EG-49, EP-BS1, EP-BS2, and TG-01 through TG-08) (All Units Combined)`	PM—	56.51 tpyannual	combined—	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`All Operations (Ref. Nos. EG-01 through EG-49, EP-BS1, EP-BS2, and TG-01 through TG-08) (All Units Combined)`	PM10—	56.51 tpyannual	combined—	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`All Operations (Ref. Nos. EG-01 through EG-49, EP-BS1, EP-BS2, and TG-01 through TG-08) (All Units Combined)`	PM2.5—	56.51 tpyannual	combined—	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`All Operations (Ref. Nos. EG-01 through EG-49, EP-BS1, EP-BS2, and TG-01 through TG-08) (All Units Combined)`	SO2—	19.21 tpyannual	combined—	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
	visible emissions—	5 percent opacityvisible	——	p. 17 ↗Machine-extracted from a page line in an older official PDF; literal context: (Ref. Nos. EG-01 through EG-49), each black start diesel engine gen-set (Ref. Nos. EP-BS1 and EP-BS2), and each simple cycle combustion natural gas fired turbine (Ref. Nos. TG-01 through TG-08) exhaust shall not exceed 5% opacity except during one six-minute period in any one-hour in which visible emissions shall not exceed 10% opacity as determined by
	visible emissions—	10 percent opacityvisible	——	p. 17 ↗Machine-extracted from a page line in an older official PDF; literal context: and EP-BS2), and each simple cycle combustion natural gas fired turbine (Ref. Nos. TG-01 through TG-08) exhaust shall not exceed 5% opacity except during one six-minute period in any one-hour in which visible emissions shall not exceed 10% opacity as determined by the EPA Reference Method 9 (40 CFR 60, Appendix A).
	visible emissions—	20 percent opacityvisible	——	p. 17 ↗Machine-extracted from a page line in an older official PDF; literal context: and EP-BS2), and each simple cycle combustion natural gas fired turbine (Ref. Nos. TG-01 through TG-08) shall not exceed 10% opacity except during one six-minute period in any one-hour in which visible emissions shall not exceed 20% opacity as determined by EPA Reference Method 9 (40 CFR 60, Appendix A).

DOCUMENT HISTORY

What this document says it changes

amended or superseding permit document

Explicitly supersedes the document dated 2023-04-07.

p. 1 ↗, p. 3 ↗

QA NOTES

Ambiguity stays visible

Verify table column grouping and any alternative models. Vantage amended permit; operating-hour page 11 and hourly/annual limit pages 13-14 visually checked; the actual-value formula on page 14 is excluded.
Confirm whether the limit is per unit, combined, or limited to testing/maintenance. Vantage amended permit; operating-hour page 11 and hourly/annual limit pages 13-14 visually checked; the actual-value formula on page 14 is excluded.
Confirm multi-row and merged-column header association. Vantage amended permit; operating-hour page 11 and hourly/annual limit pages 13-14 visually checked; the actual-value formula on page 14 is excluded.
Older-PDF text fallback; verify row and unit alignment. Vantage amended permit; operating-hour page 11 and hourly/annual limit pages 13-14 visually checked; the actual-value formula on page 14 is excluded.
Corrected the CO row and merged headers; removed the subsequent actual-emissions-dependent VOC thresholds and formula. — Vantage amended permit; operating-hour page 11 and hourly/annual limit pages 13-14 visually checked; the actual-value formula on page 14 is excluded.

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