Page-cited permit extraction

Darab Ventures One, Two, Six 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 74234-2, 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 ↗.

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

8 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
`91 through 106`	emergency engine generator setCaterpillar · C175-20 non-	16 units4000 kW each	diesel fuel oilselective catalytic reduction (SCR); diesel oxidation catalyst; oxidation catalyst	See operating-scope table—	p. 6 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`107 through 237`	non-emergency engine generator setCaterpillar · 3516E	131 units3100 kW each	diesel fuel oilselective catalytic reduction (SCR); diesel oxidation catalyst; oxidation catalyst	See operating-scope table—	p. 6 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`FP2 and FP3`	fire-pump engine—	2 units48 kW each	diesel fuel oil—	See operating-scope table—	p. 6 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`CT1 through CT20`	cooling tower—	20 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.
`CT21 through CT30`	cooling tower—	10 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.
`C1 through C11`	non-emergency engine generator setCaterpillar · C175-20	11 units4000 kW each	diesel fuel oilselective catalytic reduction (SCR)	See operating-scope table—	p. 6 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`1 through 90`	non-emergency engine generator setCaterpillar · C175-16	90 units3000 kW each	diesel fuel oilselective catalytic reduction (SCR)	See operating-scope table—	p. 6 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`FP1`	fire-pump engine—	1 units48 kW each	diesel fuel oil—	See operating-scope table—	p. 6 ↗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
`FP1 through FP3`	120 hours/year	r equal to 100, operation of each unit (which involves fuel combustion) shall be minimized to the maximum extent practical. (9VAC5-80-1180) [10/31/2025] 13. Operating Hours – The fire pump diesel engines (Ref. Nos. FP1 through FP3) shall not operate more than 120 hours per year for all purposes 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 period shall be demonstrated monthlMachine-extracted normative operating-hours statement; second review pending.	p. 10 ↗

Permitted emission limits

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

Inspect 51 transcribed limit rows

Reference	Pollutant	Limit	Basis / scope	Source
`Controlled with SCR`	NOx as NO2controlled	4.85 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Uncontrolled`	NOx as NO2uncontrolled	74.68 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`4,000 ekW C175-20 Ref. Nos. 91 through 106 Controlled with SCR and DOC`	NOx as NO2controlled	4.85 lb/hrhourly	per unit—	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Controlled with SCR`	NOx as NO2controlled	20.44 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`4,000 ekW C175-20 Ref. Nos. 91 through 106 Controlled with SCR and DOC`	NOx as NO2controlled	2.04 lb/hrhourly	per unit—	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Uncontrolled`	NOx as NO2uncontrolled	20.44 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Controlled with SCR`	VOCcontrolled	1.82 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`4,000 ekW C175-20 Ref. Nos. 91 through 106 Controlled with SCR and DOC`	VOCcontrolled	0.18 lb/hrhourly	per unit—	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Uncontrolled`	VOCuncontrolled	1.82 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Controlled with SCR`	PMcontrolled	0.75 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`4,000 ekW C175-20 Ref. Nos. 91 through 106 Controlled with SCR and DOC`	PMcontrolled	0.75 lb/hrhourly	per unit—	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Controlled with SCR`	PM10controlled	1.02 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`4,000 ekW C175-20 Ref. Nos. 91 through 106 Controlled with SCR and DOC`	PM10controlled	1.02 lb/hrhourly	per unit—	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Controlled with SCR`	PM2.5controlled	1.02 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`4,000 ekW C175-20 Ref. Nos. 91 through 106 Controlled with SCR and DOC`	PM2.5controlled	1.02 lb/hrhourly	per unit—	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`3,000 ekW C175-16 Ref. Nos. 1 through 90 Controlled with SCR`	NOx as NO2controlled	3.80 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Uncontrolled`	NOx as NO2uncontrolled	58.51 lb/hrhourly	——	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`3,000 ekW C175-16 Ref. Nos. 1 through 90 Controlled with SCR`	NOx as NO2controlled	6.05 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`3,000 ekW C175-16 Ref. Nos. 1 through 90 Controlled with SCR`	VOCcontrolled	2.31 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`3,000 ekW C175-16 Ref. Nos. 1 through 90 Controlled with SCR`	PMcontrolled	1.28 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`3,000 ekW C175-16 Ref. Nos. 1 through 90 Controlled with SCR`	PM10controlled	1.48 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`3,000 ekW C175-16 Ref. Nos. 1 through 90 Controlled with SCR`	PM2.5controlled	1.48 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`3,100 ekW Caterpillar 3516E Ref. Nos. 107 through 237 Controlled by SCR and DOC`	NOx as NO2controlled	3.78 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Uncontrolled`	NOx as NO2uncontrolled	58.11 lb/hrhourly	——	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`3,100 ekW Caterpillar 3516E Ref. Nos. 107 through 237 Controlled by SCR and DOC`	NOx as NO2controlled	0.98 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Uncontrolled`	NOx as NO2uncontrolled	9.81 lb/hrhourly	——	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`3,100 ekW Caterpillar 3516E Ref. Nos. 107 through 237 Controlled by SCR and DOC`	VOCcontrolled	0.06 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Uncontrolled`	VOCuncontrolled	0.58 lb/hrhourly	——	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`3,100 ekW Caterpillar 3516E Ref. Nos. 107 through 237 Controlled by SCR and DOC`	PMcontrolled	1.78 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`3,100 ekW Caterpillar 3516E Ref. Nos. 107 through 237 Controlled by SCR and DOC`	PM10controlled	2.00 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`3,100 ekW Caterpillar 3516E Ref. Nos. 107 through 237 Controlled by SCR and DOC`	PM2.5controlled	2.00 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. FP1 through FP3`	NOx as NO2—	0.49 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. FP1 through FP3`	NOx as NO2—	0.11 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. FP1 through FP3`	VOC—	0.04 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. FP1 through FP3`	PM—	0.02 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. FP1 through FP3`	PM10—	0.02 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. FP1 through FP3`	PM2.5—	0.02 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. CT1 through CT20 (each)`	PM—	0.08 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. CT1 through CT20 (combined)`	PM—	7.08 tpyannual	combined—	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. CT1 through CT20 (each)`	PM10—	0.05 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. CT1 through CT20 (combined)`	PM10—	3.95 tpyannual	combined—	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. CT21 through CT30 (each)`	PM—	0.15 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. CT21 through CT30 (combined)`	PM—	6.71 tpyannual	combined—	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. CT21 through CT30 (each)`	PM10—	0.08 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. CT21 through CT30 (combined)`	PM10—	3.75 tpyannual	combined—	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Facility Wide Emissions from Non- Emergency Engines and Fire Pumps`	NOx as NO2—	96.57 tpyannual	——	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Facility Wide Emissions from Non- Emergency Engines and Fire Pumps`	NOx as NO2—	99.39 tpyannual	——	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Facility Wide Emissions from Non- Emergency Engines and Fire Pumps`	VOC—	21.88 tpyannual	——	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Facility Wide Emissions from Non- Emergency Engines and Fire Pumps`	PM—	12.39 tpyannual	——	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Facility Wide Emissions from Non- Emergency Engines and Fire Pumps`	PM10—	13.93 tpyannual	——	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Facility Wide Emissions from Non- Emergency Engines and Fire Pumps`	PM2.5—	13.93 tpyannual	——	p. 15 ↗Machine-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 ↗

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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