Page-cited permit extraction

Amazon Data Services, Inc. IAD-100 IAD-101 IAD-102 IAD-103

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 74129-3, 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

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
`1 through 23`	emergency engine generator setCaterpillar · 3516C-HD	23 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.
`24 through 46`	emergency engine generator setCaterpillar · 3516C-HD	23 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.
`S1`	emergency engine generator setCaterpillar · C18	1 units600 kW each	diesel fuel oil—	See operating-scope table—	p. 5 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`47 through 69`	emergency engine generator setCaterpillar · 3516C-HD	23 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.
`91 and 92`	emergency engine generator setCaterpillar · 3516C-HD	2 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.
`93`	emergency engine generator setCaterpillar · 3516C-HD	1 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.
`S2`	emergency engine generator setCaterpillar · C18	1 units600 kW each	diesel fuel oil—	See operating-scope table—	p. 5 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`70 through 87`	emergency engine generator setCaterpillar · 3516C-HD	18 units2500 kW each	diesel fuel oil—	See operating-scope table—	p. 6 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`S3`	emergency engine generator setCaterpillar · C18	1 units600 kW each	diesel fuel oil—	See operating-scope table—	p. 6 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`T1`	emergency engine generator setCaterpillar · 3516C	1 units2000 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
`1 through 92 and T1`	100 hours/year	Amazon Data Services, Inc. Registration Number: 74129 February 21, 2019 (Last amended June 28, 2021) Page 8 7. Operating Hours – Each individual emergency diesel engine gen-set (Ref. Nos. 1 through 92 and T1) shall not operate more than 100 hours per year for maintenance checks and readiness testing (MC/RT) and no 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 daily as theMachine-extracted normative operating-hours statement; second review pending.	p. 10 ↗
`1 through 92 and T1`	500 hours/year	2019 (Last amended June 28, 2021) Page 8 7. Operating Hours – Each individual emergency diesel engine gen-set (Ref. Nos. 1 through 92 and T1) shall not operate more than 100 hours per year for maintenance checks and readiness testing (MC/RT) and no 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 daily as the sum of each consecutive 12-month period. Compliance for each consecutive 12-month periodMachine-extracted normative operating-hours statement; second review pending.	p. 10 ↗
`93, S1 through S3`	26 hours/year	total for the most recently completed calendar month to the individual monthly totals for the preceding 11 months. (9 VAC 5-80-1180) 8. Operating Hours – Each individual emergency diesel engine gen-set (Ref. Nos. 93, S1 through S3) shall not operate more than 26 hours per year for scheduled maintenance1 (maintenance check and readiness testing (MC/RT)), and no more than 500 hours per year for all purposes (as provided in Condition 6). The annual limits for hours of operation shall be calculatMachine-extracted normative operating-hours statement; second review pending.	p. 10 ↗
`93, S1 through S3`	500 hours/year	. (9 VAC 5-80-1180) 8. Operating Hours – Each individual emergency diesel engine gen-set (Ref. Nos. 93, S1 through S3) shall not operate more than 26 hours per year for scheduled maintenance1 (maintenance check and readiness testing (MC/RT)), and no more than 500 hours per year for all purposes (as provided in Condition 6). The annual limits for hours of operation shall be calculated daily as the sum of each consecutive 12-month period. Compliance for each consecutive 12-month period shall beMachine-extracted normative operating-hours statement; second review pending.	p. 10 ↗

Permitted emission limits

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

Inspect 23 transcribed limit rows

Reference	Pollutant	Limit	Basis / scope	Source
`each Caterpillar model 3516C- HD emergency diesel engine gen-set (Ref. Nos. 1 through 93)`	NOx as NO2—	48.06 lb/hrhourly	——	p. 12 ↗Machine-extracted from a page line in an older official PDF; literal context: HD emergency diesel engine gen-set (Ref. Nos. 1 through 93) shall not exceed the limits specified below: Nitrogen Oxides (as NO ) 48.06 lbs/hr 2
`each Caterpillar model 3516C- HD emergency diesel engine gen-set (Ref. Nos. 1 through 93)`	NOx as NO2—	6.09 lb/hrhourly	——	p. 12 ↗Machine-extracted from a page line in an older official PDF; literal context: Nitrogen Oxides (as NO ) 48.06 lbs/hr 2 Carbon Monoxide (CO) 6.09 lbs/hr Volatile Organic Compounds (VOC) 1.21 lbs/hr
`each Caterpillar model 3516C- HD emergency diesel engine gen-set (Ref. Nos. 1 through 93)`	VOC—	1.21 lb/hrhourly	——	p. 12 ↗Machine-extracted from a page line in an older official PDF; literal context: 2 Carbon Monoxide (CO) 6.09 lbs/hr Volatile Organic Compounds (VOC) 1.21 lbs/hr Particulate Matter (PM ) 0.40 lbs/hr
`each Caterpillar model 3516C- HD emergency diesel engine gen-set (Ref. Nos. 1 through 93)`	PM—	0.40 lb/hrhourly	——	p. 12 ↗Machine-extracted from a page line in an older official PDF; literal context: Carbon Monoxide (CO) 6.09 lbs/hr Volatile Organic Compounds (VOC) 1.21 lbs/hr Particulate Matter (PM ) 0.40 lbs/hr 10
`Caterpillar model 3516C emergency diesel engine gen-set (Ref. No: T1)`	NOx as NO2—	38.85 lb/hrhourly	——	p. 12 ↗Machine-extracted from a page line in an older official PDF; literal context: 13. Emission Limits (Hourly) – Emissions from the operation of Caterpillar model 3516C emergency diesel engine gen-set (Ref. No: T1) shall not exceed the limits specified below: Nitrogen Oxides (as NO ) 38.85 lbs/hr 2
`Caterpillar model 3516C emergency diesel engine gen-set (Ref. No: T1)`	NOx as NO2—	4.04 lb/hrhourly	——	p. 12 ↗Machine-extracted from a page line in an older official PDF; literal context: Nitrogen Oxides (as NO ) 38.85 lbs/hr 2 Carbon Monoxide (CO) 4.04 lbs/hr Volatile Organic Compounds (VOC) 1.13 lbs/hr
`Caterpillar model 3516C emergency diesel engine gen-set (Ref. No: T1)`	VOC—	1.13 lb/hrhourly	——	p. 12 ↗Machine-extracted from a page line in an older official PDF; literal context: 2 Carbon Monoxide (CO) 4.04 lbs/hr Volatile Organic Compounds (VOC) 1.13 lbs/hr Particulate Matter (PM ) 0.57 lbs/hr
`Caterpillar model 3516C emergency diesel engine gen-set (Ref. No: T1)`	PM—	0.57 lb/hrhourly	——	p. 12 ↗Machine-extracted from a page line in an older official PDF; literal context: Carbon Monoxide (CO) 4.04 lbs/hr Volatile Organic Compounds (VOC) 1.13 lbs/hr Particulate Matter (PM ) 0.57 lbs/hr 10
`each Caterpillar model C18 emergency diesel engine gen-set (Ref. Nos: S1 through S3)`	NOx as NO2—	9.58 lb/hrhourly	——	p. 12 ↗Machine-extracted from a page line in an older official PDF; literal context: emergency diesel engine gen-set (Ref. Nos: S1 through S3) shall not exceed the limits specified below: Nitrogen Oxides (as NO ) 9.58 lbs/hr 2
`each Caterpillar model C18 emergency diesel engine gen-set (Ref. Nos: S1 through S3)`	NOx as NO2—	1.59 lb/hrhourly	——	p. 12 ↗Machine-extracted from a page line in an older official PDF; literal context: Nitrogen Oxides (as NO ) 9.58 lbs/hr 2 Carbon Monoxide (CO) 1.59 lbs/hr Volatile Organic Compounds (VOC) 0.32 lbs/hr
`each Caterpillar model C18 emergency diesel engine gen-set (Ref. Nos: S1 through S3)`	VOC—	0.32 lb/hrhourly	——	p. 12 ↗Machine-extracted from a page line in an older official PDF; literal context: 2 Carbon Monoxide (CO) 1.59 lbs/hr Volatile Organic Compounds (VOC) 0.32 lbs/hr Particulate Matter (PM ) 0.11 lbs/hr
`each Caterpillar model C18 emergency diesel engine gen-set (Ref. Nos: S1 through S3)`	PM—	0.11 lb/hrhourly	——	p. 12 ↗Machine-extracted from a page line in an older official PDF; literal context: Carbon Monoxide (CO) 1.59 lbs/hr Volatile Organic Compounds (VOC) 0.32 lbs/hr Particulate Matter (PM ) 0.11 lbs/hr 10
	NOx as NO2—	96.30 tpyannual	——	p. 13 ↗Machine-extracted from a page line in an older official PDF; literal context: diesel engine gen-set (Ref. Nos: 1 through 93, S1 through S3 and T1) included for all purposes shall not exceed the limits specified below: Nitrogen Oxides (as NO ) 96.30 tpy 2
	NOx as NO2—	51.30 tpyannual	——	p. 13 ↗Machine-extracted from a page line in an older official PDF; literal context: Nitrogen Oxides (as NO ) 96.30 tpy 2 Carbon Monoxide (CO) 51.30 tpy Volatile Organic Compounds (VOC) 10.50 tpy
	VOC—	10.50 tpyannual	——	p. 13 ↗Machine-extracted from a page line in an older official PDF; literal context: 2 Carbon Monoxide (CO) 51.30 tpy Volatile Organic Compounds (VOC) 10.50 tpy Particulate Matter (PM ) 3.40 tpy
	PM—	3.40 tpyannual	——	p. 13 ↗Machine-extracted from a page line in an older official PDF; literal context: Carbon Monoxide (CO) 51.30 tpy Volatile Organic Compounds (VOC) 10.50 tpy Particulate Matter (PM ) 3.40 tpy 10
	NOx as NO2—	0.998 tpyannual	——	p. 13 ↗Machine-extracted from a page line in an older official PDF; literal context: diesel engine gen-sets (Ref. Nos. 93, S1 through S3) for MC/RT shall not exceed the limits specified below: Nitrogen Oxides (as NO ) 0.998 tpy 2
	NOx as NO2—	0.141 tpyannual	——	p. 13 ↗Machine-extracted from a page line in an older official PDF; literal context: Nitrogen Oxides (as NO ) 0.998 tpy 2 Carbon Monoxide (CO) 0.141 tpy Volatile Organic Compounds (VOC) 0.028 tpy
	VOC—	0.028 tpyannual	——	p. 13 ↗Machine-extracted from a page line in an older official PDF; literal context: 2 Carbon Monoxide (CO) 0.141 tpy Volatile Organic Compounds (VOC) 0.028 tpy Particulate Matter (PM ) 0.009 tpy
	PM—	0.009 tpyannual	——	p. 13 ↗Machine-extracted from a page line in an older official PDF; literal context: Carbon Monoxide (CO) 0.141 tpy Volatile Organic Compounds (VOC) 0.028 tpy Particulate Matter (PM ) 0.009 tpy 10
	visible emissions—	5 percent opacityvisible	——	p. 14 ↗Machine-extracted from a page line in an older official PDF; literal context: Page 12 17. Visible Emission Limit – Visible emissions from each emergency diesel engine gen-set (Ref. Nos. 1 through 93, S1 through S3, and T1) shall not exceed 5% opacity except during one 6-minute period in any one hour in which visible emissions shall not exceed 10%
	visible emissions—	10 percent opacityvisible	——	p. 14 ↗Machine-extracted from a page line in an older official PDF; literal context: 17. Visible Emission Limit – Visible emissions from each emergency diesel engine gen-set (Ref. Nos. 1 through 93, S1 through S3, and T1) 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
	visible emissions—	20 percent opacityvisible	——	p. 14 ↗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 2021-01-28.

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

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