Page-cited permit extraction

Wheeler Data Center

Loudoun Co., Virginia

QA status Machine-extractedRelease dated July 29, 2026

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EVIDENCE NOTE

What the public record says

A machine-extracted candidate of equipment groups and permit limits stated in Virginia DEQ permit 74152-5, 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

10 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
`CT18 through CT23`	cooling tower—	6 unitsNo reliable per-unit rating transcribed	——	See operating-scope table—	p. 5 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`Group 1 EG1 through EG8 and EG10 through EG15`	engine generator setMTU · 20V4000G83L	14 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.
`Group 2 EG16 through EG18`	engine generator setMTU · 12V4000G83	3 units1750 kW each	diesel fuel oil—	See operating-scope table—	p. 5 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`Group 3 EG19 through EG86`	engine generator setCaterpillar · 3516E	68 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.
`Group 4 EG87 through EG106`	engine generator setCaterpillar · 3512C	20 units1750 kW each	diesel fuel oil—	See operating-scope table—	p. 5 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`EG107`	engine generator set—	1 units250 kW each	diesel fuel oil—	See operating-scope table—	p. 5 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`CT1 through CT3`	cooling tower—	3 unitsNo reliable per-unit rating transcribed	——	See operating-scope table—	p. 5 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`CT4 through CT17`	cooling tower—	14 unitsNo reliable per-unit rating transcribed	——	See operating-scope table—	p. 6 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`FWP1`	fire-pump engineJohn Deere · Diesel	1 units147 kW each	diesel fuel oil—	See operating-scope table—	p. 6 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
	engine generator set—	— unitsNo reliable per-unit rating transcribed	——	See operating-scope table—	p. 11 ↗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
`FWP1`	500 hours/year	rough EG18(Group 2)) and the fire pump diesel engine (Ref. No. FWP1) are limited to the following: Diesel engine-generator sets (Ref. Nos. EG1 through EG8 and EG10 through EG15(Group1) and EG16 through EG18(Group 2)): a. No single unit shall operate more than 500 hours per year; b. No single unit shall operate more than 100 hours per year for scheduled maintenance checks and readiness testing (Scheduled MCRT), unscheduled maintenance, testing, and operational training (as provided in ConditionMachine-extracted normative operating-hours statement; second review pending.	p. 10 ↗
`EG1 through EG8 and EG10 through EG15`	100 hours/year	FWP1) are limited to the following: Diesel engine-generator sets (Ref. Nos. EG1 through EG8 and EG10 through EG15(Group1) and EG16 through EG18(Group 2)): a. No single unit shall operate more than 500 hours per year; b. No single unit shall operate more than 100 hours per year for scheduled maintenance checks and readiness testing (Scheduled MCRT), unscheduled maintenance, testing, and operational training (as provided in Condition 7.c and 7.d). Fire pump diesel engine (Ref. No. FWP1): a. TheMachine-extracted normative operating-hours statement; second review pending.	p. 10 ↗
`EG19 through EG86`	20 hours/year	o the individual monthly totals for the preceding 11 months. (9 VAC 5-80-1180) [1/30/2024] 12. Operating Hours – Each individual emergency diesel engine gen-set (Ref. Nos. EG19 through EG86(Group 3) and EG87 through EG106(Group 4)) shall not operate more than 20 hours per year for scheduled maintenance checks and readiness testing (Scheduled MCRT) (as provided in Condition 7.c). Each individual emergency diesel engine gen-set (Ref. Nos. EG19 through EG86(Group 3) and EG87 through EG106(GroupMachine-extracted normative operating-hours statement; second review pending.	p. 10 ↗
`EG19 through EG86`	500 hours/year	per year for scheduled maintenance checks and readiness testing (Scheduled MCRT) (as provided in Condition 7.c). Each individual emergency diesel engine gen-set (Ref. Nos. EG19 through EG86(Group 3) and EG87 through EG106(Group 4)) shall not operate more than 500 hours per year for all purposes (as provided in Condition 7) 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. 10 ↗
`EG107`	20 hours/year	y by adding the total for the most recently completed calendar month to the individual monthly totals for the preceding 11 months. (9 VAC 5-80-1180) [1/30/2024] 13. Operating Hours – Emergency diesel engine gen-set (Ref. No. EG107) shall not operate more than 20 hours per year for scheduled maintenance checks and readiness testing (Scheduled MCRT) (as provided in Condition 7.c). Emergency diesel engine gen-set (Ref. No. EG107) shall not operate more than 100 hours per year for all purposes (aMachine-extracted normative operating-hours statement; second review pending.	p. 10 ↗
`EG107`	100 hours/year	engine gen-set (Ref. No. EG107) shall not operate more than 20 hours per year for scheduled maintenance checks and readiness testing (Scheduled MCRT) (as provided in Condition 7.c). Emergency diesel engine gen-set (Ref. No. EG107) shall not operate more than 100 hours per year for all purposes (as provided in Condition 7) combined.Machine-extracted normative operating-hours statement; second review pending.	p. 10 ↗

Permitted emission limits

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

Inspect 39 transcribed limit rows

Reference	Pollutant	Limit	Basis / scope	Source
`Group 1 (Ref. Nos. EG1 through EG8 and EG10 through EG15)`	NOx as NO2—	53.1 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group 2 (Ref. Nos. EG16 through EG18)`	NOx as NO2—	33.7 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group 1 (Ref. Nos. EG1 through EG8 and EG10 through EG15)`	NOx as NO2—	9.3 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group 2 (Ref. Nos. EG16 through EG18)`	NOx as NO2—	6.3 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group 1 (Ref. Nos. EG1 through EG8 and EG10 through EG15)`	VOC—	3.4 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group 2 (Ref. Nos. EG16 through EG18)`	VOC—	3.1 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group 1 (Ref. Nos. EG1 through EG8 and EG10 through EG15)`	PM10—	1.6 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group 2 (Ref. Nos. EG16 through EG18)`	PM10—	2.0 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group 1 (Ref. Nos. EG1 through EG8 and EG10 through EG15)`	PM2.5—	1.6 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group 2 (Ref. Nos. EG16 through EG18)`	PM2.5—	2.0 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group 3 (Ref. Nos. EG19 through EG86)`	NOx as NO2—	52.91 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group 4 (Ref. Nos. EG87 through 106)`	NOx as NO2—	34.18 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group 3 (Ref. Nos. EG19 through EG86)`	NOx as NO2—	10.22 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group 4 (Ref. Nos. EG87 through 106)`	NOx as NO2—	5.88 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group 3 (Ref. Nos. EG19 through EG86)`	VOC—	0.89 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group 4 (Ref. Nos. EG87 through 106)`	VOC—	0.89 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group 3 (Ref. Nos. EG19 through EG86)`	PM10—	0.85 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group 4 (Ref. Nos. EG87 through 106)`	PM10—	0.54 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group 3 (Ref. Nos. EG19 through EG86)`	PM2.5—	0.85 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group 4 (Ref. Nos. EG87 through 106)`	PM2.5—	0.54 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`(Ref. No. EG107)`	NOx as NO2—	6.61 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`(Ref. No. EG107)`	NOx as NO2—	6.21 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`(Ref. No. EG107)`	VOC—	0.53 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`(Ref. No. EG107)`	PM10—	0.38 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`(Ref. No. EG107)`	PM2.5—	0.38 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`(Ref. No. FWP1)`	NOx as NO2—	1.08 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`(Ref. No. FWP1)`	NOx as NO2—	0.43 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`(Ref. No. FWP1)`	VOC—	0.09 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`(Ref. No. FWP1)`	PM10—	0.04 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`(Ref. No. FWP1)`	PM2.5—	0.04 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group1 through Group 4 (Ref. Nos. EG1 through EG8 and EG10 through EG106) All Operations (105 Units Combined)`	NOx as NO2—	95.00 tpyannual	combined—	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group1 through Group 4 (Ref. Nos. EG1 through EG8 and EG10 through EG106) All Operations (105 Units Combined)`	NOx as NO2—	47.32 tpyannual	combined—	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group1 through Group 4 (Ref. Nos. EG1 through EG8 and EG10 through EG106) All Operations (105 Units Combined)`	VOC—	23.11 tpyannual	combined—	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group1 through Group 4 (Ref. Nos. EG1 through EG8 and EG10 through EG106) All Operations (105 Units Combined)`	PM10—	7.46 tpyannual	combined—	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Group1 through Group 4 (Ref. Nos. EG1 through EG8 and EG10 through EG106) All Operations (105 Units Combined)`	PM2.5—	7.46 tpyannual	combined—	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`cooling towers (Ref. Nos. CT1 through CT23)`	PM—	3.71 tpyannual	——	p. 15 ↗Machine-extracted from a page line in an older official PDF; literal context: below: Pollutant (Ref. Nos. CT1 through CT23) Particulate Matter (PM ) 3.71 tpy 10
`cooling towers (Ref. Nos. CT1 through CT23)`	visible emissions—	5 percent opacityvisible	——	p. 15 ↗Machine-extracted from a page line in an older official PDF; literal context: Nos. EG1 through EG8 and EG10 through EG15(Group 1), EG16 through EG18(Group 2), EG19 through EG86(Group 3), and EG87 through EG106(Group 4), and EG107) and the fire pump diesel engine (Ref. No. FWP1) shall not exceed 5% opacity except during one 6- minute period in any one hour in which visible emissions shall not exceed 10% opacity as
`cooling towers (Ref. Nos. CT1 through CT23)`	visible emissions—	10 percent opacityvisible	——	p. 15 ↗Machine-extracted from a page line in an older official PDF; literal context: EG19 through EG86(Group 3), and EG87 through EG106(Group 4), and EG107) and the fire pump diesel engine (Ref. No. FWP1) shall not exceed 5% opacity except during one 6- minute period in any one hour in which visible emissions shall not exceed 10% opacity as determined by EPA Method 9 (reference 40 CFR 60, Appendix A). This condition applies
`cooling towers (Ref. Nos. CT1 through CT23)`	visible emissions—	20 percent opacityvisible	——	p. 15 ↗Machine-extracted from a page line in an older official PDF; literal context: EG19 through EG86(Group 3), EG87 through EG106(Group 4), and EG107) and the fire pump diesel engine (Ref. No. FWP1) shall not exceed 10% opacity except during one 6- minute period in any one hour in which visible emissions shall not exceed 20% opacity as determined by EPA Method 9 (reference 40 CFR 60, Appendix A).

DOCUMENT HISTORY

What this document says it changes

amended or superseding permit document

Explicitly supersedes the document dated 2021-12-03.

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.
Older-PDF text fallback; verify row and unit alignment.

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