Page-cited permit extraction

CyrusOne Loudoun Tech Center

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 74086-3, 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

2 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
	emergency engine generator set—	2 units2250 kW each	diesel fuel oil—	See operating-scope table—	p. 5 ↗Machine-extracted from explicit permit prose: D40, A45, B45, 16V4000G83 emergency 2,250 ekW R45, C45, and D45 diesel engine gen-sets (each unit) Equipment permitted prior to the date of this permit: Delegated Original Rated Referenc
	emergency engine generator setMTU	1 units750 kW each	diesel fuel oil—	See operating-scope table—	p. 5 ↗Machine-extracted from explicit permit prose: E, F, G, and H One (1) MTU, 1,193 bhp House 12V2000G85 TB None 4/1/2016 750 ekW emergency diesel engine gen-set ' 1 I \| \| Specifications included in the above tables are for informational purposes only and do no

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
`A1, B1, C1, D1, A2, B2, C2, 02, A10, B10, C10, D10, A15, B15. C15, 015. A20, B20, C20, D20, A25, B25.`	220 hours/year	5-80-1180) 6. Operating Hours - The emergency diesel engine gen-sets (Ref. Nos. A1, B1, C1, D1, A2, B2, C2, 02, A10, B10, C10, D10, A15, B15. C15, 015. A20, B20, C20, D20, A25, B25. C25, 025, E, F, G, and H,) shall not operate more than a combined total of 3,220 hours per year, and no single emergency diesel engine gen-set (Ref. Nos. A1, B1, C1, D1, A2, B2. C2, D2, A10, B10, C10, D10, A15, B15, C15, D15, A20, B20, 020, D20, A25, B25, C25, 025, E, F, G, and H) shall operate more than 500 hoursMachine-extracted normative operating-hours statement; second review pending.	p. 7 ↗
`A40, B40, R40, C40, D40, A45, B45, R45, C45, and 045`	1.150 hours/year	alendar day to the individual daily totals for the preceding 364 days. (9 VAC 5-80-1180) 7. Operating Hours - The emergency diesel engine gen-sets (Ref. Nos. A40, B40, R40, C40, D40, A45, B45, R45, C45, and 045) shall not operate more than a combined total of 1.150 hours per year, and no single emergency diesel engine gen-set (Ref. Nos. A40, B40, R40, C40, D40, A45, B45, R45, C45, and D45) shall operate more than 500 hours per year, calculated daily as the sum of each consecutive 365-day period.Machine-extracted normative operating-hours statement; second review pending.	p. 7 ↗
`A40, B40, R40, C40, D40, A45, B45, R45, C45, and D45`	500 hours/year	A40, B40, R40, C40, D40, A45, B45, R45, C45, and 045) shall not operate more than a combined total of 1.150 hours per year, and no single emergency diesel engine gen-set (Ref. Nos. A40, B40, R40, C40, D40, A45, B45, R45, C45, and D45) shall operate more than 500 hours per year, calculated daily as the sum of each consecutive 365-day period. Compliance for the consecutive 365-day period shall be demonstrated daily by adding the total for the most recently completed calendar day to the individuMachine-extracted normative operating-hours statement; second review pending.	p. 7 ↗
`House`	115 hours/year	nstrated daily by adding the total for the most recently completed calendar day to the individual daily totals for the preceding 364 days. (9 VAC 5-80-1180) 8. Operating Hours - The emergency diesel engine gen-set (Ref. Nos. House) shall not operate more than 115 hours per year, calculated daily as the sum of each consecutive 365- day period. Compliance for the consecutive 365-day period shall be demonstrated daily by adding the total for the most recently completed calendar day to the individMachine-extracted normative operating-hours statement; second review pending.	p. 7 ↗

Permitted emission limits

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

Inspect 3 transcribed limit rows

Pollutant	Limit	Basis / scope	Source
PM—	1.13 tpyannual	——	p. 9 ↗Machine-extracted from a page line in an older official PDF; literal context: 1.46 tpy - 0.52 tpy Compounds (VOC) PM 1.13 tpy - - 10
visible emissions—	5 percent opacityvisible	——	p. 9 ↗Machine-extracted from a page line in an older official PDF; literal context: exhausts (Ref. Nos. A1, B1, C1, D1, A2, 82, C2, 02, A10, B10, C10, D10, A15, B15, C15, D15, A20, B20, C20, D20, A25, B25, C25, 025. E, F, G, H, House, A40, B40, R40, C40, D40, A45, B45, R45, C45, and 045) 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. 9 ↗Machine-extracted from a page line in an older official PDF; literal context: D15, A20, B20, C20, D20, A25, B25, C25, 025. E, F, G, H, House, A40, B40, R40, C40, D40, A45, B45, R45, C45, and 045) 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 at

DOCUMENT HISTORY

What this document says it changes

amended or superseding permit document

Explicitly supersedes the document dated 2016-04-01.

p. 1 ↗, p. 3 ↗

QA NOTES

Ambiguity stays visible

Machine-extracted candidate. Verify every reused value against the cited official PDF page.
Prose fallback; verify equipment grouping.
Confirm whether the limit is per unit, combined, or limited to testing/maintenance.
Older-PDF text fallback; verify row and unit alignment.

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