Page-cited permit extraction

Aligned Energy Data Centers (Ashburn), LLC

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 74169-2, 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.

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

4 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
`GEN65 through GEN68`	emergency engine generator setCaterpillar · 3516C	4 units2500 kW each	diesel fuel oil—	See operating-scope table—	p. 5 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`GEN69 through GEN108`	emergency engine generator setCaterpillar · C175 DITA	40 units3000 kW each	diesel fuel oil—	See operating-scope table—	p. 5 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`GEN1 through GEN64`	emergency engine generator setCaterpillar · 3516C	64 units2250 kW each	diesel fuel oil—	See operating-scope table—	p. 5 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`LSGEN-1, LSGEN-2`	emergency engine generator setCaterpillar · C32	2 units1000 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
`GEN1 through GEN108`	20 hours/year	Aligned Energy, LLC Registration Number: 74169 July 18, 2022 Page 7 a. Each individual emergency diesel engine gen-set (Ref. Nos. GEN1 through GEN108) shall not operate more than 20 hours per year for scheduled maintenance checks and readiness testing (Scheduled MCRT) (as provided in Condition 6c.). b. Each individual emergency diesel engine gen-set (Ref. Nos. GEN1 through GEN108) shall not operate more than 500Machine-extracted normative operating-hours statement; second review pending.	p. 9 ↗
`GEN1 through GEN108`	500 hours/year	hall not operate more than 20 hours per year for scheduled maintenance checks and readiness testing (Scheduled MCRT) (as provided in Condition 6c.). b. Each individual emergency diesel engine gen-set (Ref. Nos. GEN1 through GEN108) shall not operate more than 500 hours per year for all purposes (as provided in Condition 6) 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. 9 ↗
`LSGEN-1 and LSGEN-2`	80 hours/year	Operating Hours – The operating hours of the emergency diesel engine gen-sets (Ref. Nos. LSGEN-1 and LSGEN-2) are limited to the following: a. The emergency diesel engine gen-sets (Ref. Nos. LSGEN-1 and LSGEN-2) combined shall not operate more than a total of 80 hours per year all purposes (as provided in Condition 6) combined. b. Each individual emergency diesel engine gen-set (Ref. Nos. LSGEN-1 and LSGEN-2) shall not operate more than 20 hours per year for scheduled maintenance checks and rMachine-extracted normative operating-hours statement; second review pending.	p. 9 ↗
`LSGEN-1 and LSGEN-2`	20 hours/year	Ref. Nos. LSGEN-1 and LSGEN-2) combined shall not operate more than a total of 80 hours per year all purposes (as provided in Condition 6) combined. b. Each individual emergency diesel engine gen-set (Ref. Nos. LSGEN-1 and LSGEN-2) shall not operate more than 20 hours per year for scheduled maintenance checks and readiness testing (Scheduled MCRT) (as provided in Condition 6c.). The annual limits for hours of operation shall be calculated monthly as the sum of each consecutive 12-month periodMachine-extracted normative operating-hours statement; second review pending.	p. 9 ↗

Permitted emission limits

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

Inspect 43 transcribed limit rows

Reference	Pollutant	Limit	Basis / scope	Source
`Ref. Nos. GEN1 through GEN64 CAT 3615C`	NOx as NO2—	35.72 lb/hrhourly	per unit—	p. 11 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. GEN65 through GEN68 CAT 3615C`	NOx as NO2—	42.61 lb/hrhourly	per unit—	p. 11 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. GEN69 through GEN108 CAT 3615E`	NOx as NO2—	58.11 lb/hrhourly	per unit—	p. 11 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`CAT C175-16`	NOx as NO2—	58.51 lb/hrhourly	per unit—	p. 11 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. GEN1 through GEN64 CAT 3615C`	NOx as NO2—	4.80 lb/hrhourly	per unit—	p. 11 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. GEN65 through GEN68 CAT 3615C`	NOx as NO2—	6.09 lb/hrhourly	per unit—	p. 11 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. GEN69 through GEN108 CAT 3615E`	NOx as NO2—	11.62 lb/hrhourly	per unit—	p. 11 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`CAT C175-16`	NOx as NO2—	7.64 lb/hrhourly	per unit—	p. 11 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
	VOC—	1.17 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
	VOC—	1.21 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
	VOC—	0.58 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
	VOC—	0.85 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
	PM10—	0.46 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
	PM10—	0.58 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
	PM10—	0.92 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
	PM10—	0.62 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
	PM2.5—	0.46 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
	PM2.5—	0.58 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
	PM2.5—	0.92 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
	PM2.5—	0.62 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Caterpillar C32 (Ref. Nos. LSGEN-1 and LSGEN-2)`	NOx as NO2—	16.00 lb/hrhourly	per unit—	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Caterpillar C32 (Ref. Nos. LSGEN-1 and LSGEN-2)`	NOx as NO2—	0.96 lb/hrhourly	per unit—	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Caterpillar C32 (Ref. Nos. LSGEN-1 and LSGEN-2)`	VOC—	0.17 lb/hrhourly	per unit—	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Caterpillar C32 (Ref. Nos. LSGEN-1 and LSGEN-2)`	PM10—	0.10 lb/hrhourly	per unit—	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Caterpillar C32 (Ref. Nos. LSGEN-1 and LSGEN-2)`	PM2.5—	0.10 lb/hrhourly	per unit—	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`CAT 3615C (Ref. Nos. GEN1 through GEN64) All Operations (64 units combined)`	NOx as NO2—	37.48 tpyannual	combined—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`CAT 3615C (Ref. Nos. GEN1 through GEN64) All Operations (64 units combined)`	NOx as NO2—	26.63 tpyannual	combined—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`CAT 3615C (Ref. Nos. GEN1 through GEN64) All Operations (64 units combined)`	VOC—	5.57 tpyannual	combined—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`CAT 3615C (Ref. Nos. GEN1 through GEN64) All Operations (64 units combined)`	PM10—	1.86 tpyannual	combined—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`CAT 3615C (Ref. Nos. GEN1 through GEN64) All Operations (64 units combined)`	PM2.5—	1.86 tpyannual	combined—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`CAT 3615C (Ref. Nos. GEN65 through GEN68) All Operations (4 units combined)`	NOx as NO2—	2.57 tpyannual	combined—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`CAT 3615C (Ref. Nos. GEN65 through GEN68) All Operations (4 units combined)`	NOx as NO2—	1.56 tpyannual	combined—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`CAT 3615E and/or CAT C175-16 (Ref. Nos. GEN69 through GEN108) All Operations (40 units combined)`	NOx as NO2—	55.36 tpyannual	combined—	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`CAT 3615E and/or CAT C175-16 (Ref. Nos. GEN69 through GEN108) All Operations (40 units combined)`	NOx as NO2—	24.26 tpyannual	combined—	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`CAT 3615E and/or CAT C175-16 (Ref. Nos. GEN69 through GEN108) All Operations (40 units combined)`	VOC—	2.53 tpyannual	combined—	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`CAT 3615E and/or CAT C175-16 (Ref. Nos. GEN69 through GEN108) All Operations (40 units combined)`	PM10—	1.18 tpyannual	combined—	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`CAT 3615E and/or CAT C175-16 (Ref. Nos. GEN69 through GEN108) All Operations (40 units combined)`	PM2.5—	1.18 tpyannual	combined—	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Caterpillar C32 Ref. Nos. LSGEN-1 and LSGEN-2 All Operations (2 units combined)`	NOx as NO2—	0.64 tpyannual	combined—	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. GEN1 through GEN108, LSGEN-1 and LSGEN-2 All Operations (108 units combined)`	NOx as NO2—	96.05 tpyannual	combined—	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. GEN1 through GEN108, LSGEN-1 and LSGEN-2 All Operations (108 units combined)`	NOx as NO2—	52.49 tpyannual	combined—	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. GEN1 through GEN108, LSGEN-1 and LSGEN-2 All Operations (108 units combined)`	VOC—	8.44 tpyannual	combined—	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. GEN1 through GEN108, LSGEN-1 and LSGEN-2 All Operations (108 units combined)`	PM10—	3.16 tpyannual	combined—	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. GEN1 through GEN108, LSGEN-1 and LSGEN-2 All Operations (108 units combined)`	PM2.5—	3.16 tpyannual	combined—	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.

DOCUMENT HISTORY

What this document says it changes

amended or superseding permit document

Explicitly supersedes the document dated 2019-05-17.

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.

← Return to evidence index