Page-cited permit extraction

Gainesville Crossing Data Campus - GCDC

Prince William 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 74241-3, 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

14 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
`1 through 65 Building 1`	emergency engine generator setMTU · 16V4000 G84S/DS2250	65 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.
`66 through 130 Building 2`	emergency engine generator setCaterpillar · 3516C	65 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.
`180 through 228 Building 4`	emergency engine generator setMTU · 20V4000 DS2800	49 units2800 kW each	diesel fuel oilselective catalytic reduction (SCR)	See operating-scope table—	p. 5 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`229 through 277 Building 5`	emergency engine generator setMTU · 20V4000 DS2800	49 units2800 kW each	diesel fuel oilselective catalytic reduction (SCR)	See operating-scope table—	p. 5 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`SEC1 CSOC`	emergency engine generator setMTU / John Deere	1 units150 kW each	diesel fuel oil—	See operating-scope table—	p. 5 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`Engine Building Ref. Nos.`	engine generator set—	— unitsNo reliable per-unit rating transcribed	—selective catalytic reduction (SCR)	See operating-scope table—	p. 11 ↗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.
`Table 1`	emergency engine generator set—	— unitsNo reliable per-unit rating transcribed	diesel fuel oil—	See operating-scope table—	p. 27 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`Pollutant`	engine generator setMTU · 16V4000 DS2250	1 unitsNo reliable per-unit rating transcribed	——	See operating-scope table—	p. 27 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`Table 2`	emergency engine generator set—	— unitsNo reliable per-unit rating transcribed	diesel fuel oil—	See operating-scope table—	p. 27 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`Pollutant`	engine generator setMTU · 20V4000 DS2800	1 unitsNo reliable per-unit rating transcribed	——	See operating-scope table—	p. 27 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`131 through 179 Building 3`	emergency engine generator setMTU · 16V4000 G84S/DS2250	49 units2250 kW each	diesel fuel oil—	See operating-scope table—	p. 30 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`Table 1`	emergency engine generator set—	— unitsNo reliable per-unit rating transcribed	diesel fuel oil—	See operating-scope table—	p. 48 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`Pollutant`	engine generator setMTU · 16V4000 DS2250	1 unitsNo reliable per-unit rating transcribed	——	See operating-scope table—	p. 48 ↗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
`1 through 130, 180 through 277, and SEC1`	20 hours/year	hen the affected unit is fully integrated with the sources electrical system. (9VAC5-80-1180) [11/21/2025] 9. Operating Hours – a. Each individual emergency diesel engine gen-set (Ref. Nos. 1 through 130, 180 through 277, and SEC1) shall not operate more than 20 hours per year for scheduled maintenance checks and readiness testing (Scheduled MCRT) (as provided in Condition 8.c). b. Each individual emergency diesel engine gen-set (Ref. Nos. 1 through 130 and 180 through 277) shall not operateMachine-extracted normative operating-hours statement; second review pending.	p. 9 ↗
`1 through 130 and 180 through 277`	500 hours/year	te more than 20 hours per year for scheduled maintenance checks and readiness testing (Scheduled MCRT) (as provided in Condition 8.c). b. Each individual emergency diesel engine gen-set (Ref. Nos. 1 through 130 and 180 through 277) shall not operate more than 500 hours per year for all purposes (as provided in Condition 8) combined.Machine-extracted normative operating-hours statement; second review pending.	p. 9 ↗
`SEC1`	45 hours/year	Gainesville Crossing Data Campus (Buildings 1, 2, 4, 5, and CSOC) Registration Number: 74241 November 21, 2025 Page 8 c. The emergency diesel engine gen-set (Ref. No. SEC1) shall not operate more than 45 hours per year for all purposes (as provided in Condition 8) 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 ↗
`131 through 179`	16 hours/year	rted on-site and ending when the affected unit is fully integrated with the sources electrical system. (9VAC5-80-1180) [11/21/2025] 7. Operating Hours – a. Each individual emergency diesel engine gen-set (Ref. Nos. 131 through 179) shall not operate more than 16 hours per year for scheduled maintenance checks and readiness testing (Scheduled MCRT) (as provided in Condition 5.c). b. Each individual emergency diesel engine gen-set (Ref. Nos. 131 through 179) shall not operate more than 500 hourMachine-extracted normative operating-hours statement; second review pending.	p. 33 ↗
`131 through 179`	500 hours/year	9) shall not operate more than 16 hours per year for scheduled maintenance checks and readiness testing (Scheduled MCRT) (as provided in Condition 5.c). b. Each individual emergency diesel engine gen-set (Ref. Nos. 131 through 179) 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. 33 ↗

Permitted emission limits

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

Inspect 50 transcribed limit rows

Reference	Pollutant	Limit	Basis / scope	Source
`Ref. Nos. 1 through 65 MTU 16V4000 DS2250`	NOx as NO2—	43.46 lb/hrhourly	per unit—	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 66 through 130 CAT 3516C`	NOx as NO2—	44.63 lb/hrhourly	per unit—	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. No. SEC1 MTU 6R0113 DS150`	NOx as NO2—	1.44 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 1 through 65 MTU 16V4000 DS2250`	NOx as NO2—	6.95 lb/hrhourly	per unit—	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 66 through 130 CAT 3516C`	NOx as NO2—	2.68 lb/hrhourly	per unit—	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. No. SEC1 MTU 6R0113 DS150`	NOx as NO2—	0.41 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 1 through 65 MTU 16V4000 DS2250`	VOC—	2.58 lb/hrhourly	per unit—	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 66 through 130 CAT 3516C`	VOC—	1.16 lb/hrhourly	per unit—	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. No. SEC1 MTU 6R0113 DS150`	VOC—	0.052 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 1 through 65 MTU 16V4000 DS2250`	PM—	0.93 lb/hrhourly	per unit—	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 66 through 130 CAT 3516C`	PM—	0.31 lb/hrhourly	per unit—	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. No. SEC1 MTU 6R0113 DS150`	PM—	0.052 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 1 through 65 MTU 16V4000 DS2250`	PM10—	0.96 lb/hrhourly	per unit—	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 66 through 130 CAT 3516C`	PM10—	0.47 lb/hrhourly	per unit—	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. No. SEC1 MTU 6R0113 DS150`	PM10—	0.052 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 1 through 65 MTU 16V4000 DS2250`	PM2.5—	0.96 lb/hrhourly	per unit—	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 66 through 130 CAT 3516C`	PM2.5—	0.47 lb/hrhourly	per unit—	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. No. SEC1 MTU 6R0113 DS150`	PM2.5—	0.052 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 180 through 277 MTU 20V4000 DS2800`	NOx as NO2—	7.11 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 180 through 277 MTU 20V4000 DS2800`	VOC—	3.84 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 180 through 277 MTU 20V4000 DS2800`	PM—	1.13 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 180 through 277 MTU 20V4000 DS2800`	PM10—	1.28 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 180 through 277 MTU 20V4000 DS2800`	PM2.5—	1.28 lb/hrhourly	——	p. 12 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. No. SEC1 All Operations`	NOx as NO2—	0.032 tpyannual	——	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 1 through 130 and 180 through 277`	NOx as NO2—	77.95 tpyannual	——	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. No. SEC1 All Operations`	NOx as NO2—	0.0092 tpyannual	——	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 1 through 130 and 180 through 277`	NOx as NO2—	38.02 tpyannual	——	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. No. SEC1 All Operations`	VOC—	0.0012 tpyannual	——	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 1 through 130 and 180 through 277`	VOC—	38.57 tpyannual	——	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. No. SEC1 All Operations`	PM—	0.0012 tpyannual	——	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 1 through 130 and 180 through 277`	PM—	13.97 tpyannual	——	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. No. SEC1 All Operations`	PM10—	0.0012 tpyannual	——	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 1 through 130 and 180 through 277`	PM10—	14.17 tpyannual	——	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. No. SEC1 All Operations`	PM2.5—	0.0012 tpyannual	——	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 1 through 130 and 180 through 277`	PM2.5—	14.17 tpyannual	——	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 131 through 179 MTU 16V4000 DS2250`	NOx as NO2—	43.46 lb/hrhourly	per unit—	p. 35 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 131 through 179 MTU 16V4000 DS2250`	NOx as NO2—	6.95 lb/hrhourly	per unit—	p. 35 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 131 through 179 MTU 16V4000 DS2250`	VOC—	2.58 lb/hrhourly	per unit—	p. 35 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 131 through 179 MTU 16V4000 DS2250`	PM—	0.93 lb/hrhourly	per unit—	p. 35 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 131 through 179 MTU 16V4000 DS2250`	PM10—	0.96 lb/hrhourly	per unit—	p. 35 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 131 through 179 MTU 16V4000 DS2250`	PM2.5—	0.96 lb/hrhourly	per unit—	p. 35 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 131 through 179 All Operations (All Units Combined)`	NOx as NO2—	16.69 tpyannual	combined—	p. 35 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 131 through 179 All Operations (All Units Combined)`	NOx as NO2—	8.24 tpyannual	combined—	p. 35 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 131 through 179 All Operations (All Units Combined)`	VOC—	8.36 tpyannual	combined—	p. 35 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 131 through 179 All Operations (All Units Combined)`	PM—	3.03 tpyannual	combined—	p. 35 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 131 through 179 All Operations (All Units Combined)`	PM10—	3.07 tpyannual	combined—	p. 35 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. 131 through 179 All Operations (All Units Combined)`	PM2.5—	3.07 tpyannual	combined—	p. 35 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
	visible emissions—	5 percent opacityvisible	——	p. 36 ↗Machine-extracted from a page line in an older official PDF; literal context: Page 9 13. Visible Emission Limit – Visible emissions from each emergency diesel engine gen-set (Ref. Nos. 131 through 179) exhausts 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
	visible emissions—	10 percent opacityvisible	——	p. 36 ↗Machine-extracted from a page line in an older official PDF; literal context: 13. Visible Emission Limit – Visible emissions from each emergency diesel engine gen-set (Ref. Nos. 131 through 179) exhausts 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
	visible emissions—	20 percent opacityvisible	——	p. 36 ↗Machine-extracted from a page line in an older official PDF; literal context: During startup and shutdown, visible emissions from each emergency diesel engine gen-set 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 2024-10-07.

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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