Page-cited permit extraction

Corporate Office Properties Trust (COPT - DC6)

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 73683-12, 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

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
`G4 thru G6`	emergency engine generator setMTU · 16V4000	3 units2000 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.
`G1`	engine generator setMTU · 20V4000G43	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.
`G2, G3, and RPU11 thru RPU15`	engine generator setMTU · 16V4000	7 units2050 kW each	diesel fuel oil—	See operating-scope table—	p. 5 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`GE1, GE2, and GER1`	engine generator setMTU · 20V4000G43	3 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.
`GE3, GE4, GE5`	engine generator setMTU · 20V4000G43	3 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.
`GM1 and GMR`	engine generator setMTU · 16V4000	2 units2050 kW each	diesel fuel oil—	See operating-scope table—	p. 6 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`GM2`	engine generator setMTU · 16V4000	1 units2050 kW each	diesel fuel oil—	See operating-scope table—	p. 6 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
`GEN1`	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
`RPU11 thru RPU15, G1 thru G3, GE1 thru GE5, GM1, GM2, GMR, GER1, and GEN1`	100 hours/year	180) 12. Operating Hours – In addition to the fuel throughput limitation specified in Conditions 17 and 18, each individual diesel engine gen-set (Ref. Nos. RPU11 thru RPU15, G1 thru G3, GE1 thru GE5, GM1, GM2, GMR, GER1, and GEN1) shall not operate more than 100 hours per year for unscheduled maintenance, testing, operational training, and scheduled maintenance checks and readiness testing (as provided in Conditions 7.c and 7.d) and no more than 500 hours per year for all purposes (as provideMachine-extracted normative operating-hours statement; second review pending.	p. 11 ↗
	500 hours/year	thru GE5, GM1, GM2, GMR, GER1, and GEN1) shall not operate more than 100 hours per year for unscheduled maintenance, testing, operational training, and scheduled maintenance checks and readiness testing (as provided in Conditions 7.c and 7.d) and no more than 500 hours per year for all purposes (as provided in Condition 7) 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. 11 ↗
`G4 thru G6`	500 hours/year	g the total for the most recently completed calendar month to the individual monthly totals for the preceding 11 months. (9 VAC 5-80-1180) 13. Operating Hours – Each individual emergency diesel engine gen-set (Ref. Nos. G4 thru G6) shall not operate more than 500 hours per year for all purposes (as provided in Condition 7) combined. Each individual emergency diesel engine gen-set (Ref. Nos. G4Machine-extracted normative operating-hours statement; second review pending.	p. 11 ↗
	23 hours/year	Corporate Office Properties Trust (COPT) Registration Number: 73683 August 24, 2021 Page 10 thru G6) shall not operate more than 23 hours per year for scheduled maintenance checks and readiness testing (Scheduled MCRT, as provided in Condition 7.d). The annual limits for hours of operation shall be calculated monthly as the sum of each consecutive 12-month period.Machine-extracted normative operating-hours statement; second review pending.	p. 12 ↗

Permitted emission limits

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

Inspect 45 transcribed limit rows

Reference	Pollutant	Limit	Basis / scope	Source
`Ref. Nos. GM1, GM2, GMR, RPU11-RPU15, G2 and G3`	NOx as NO2—	41.4 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. G1, GE1 – GE5, and GER1`	NOx as NO2—	44.7 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. GM1, GM2, GMR, RPU11-RPU15, G2 and G3`	NOx as NO2—	6.1 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. G1, GE1 – GE5, and GER1`	NOx as NO2—	6.1 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. GM1, GM2, GMR, RPU11-RPU15, G2 and G3`	VOC—	0.9 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. G1, GE1 – GE5, and GER1`	VOC—	1.36 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. GM1, GM2, GMR, RPU11-RPU15, G2 and G3`	PM10—	0.75 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. G1, GE1 – GE5, and GER1`	PM10—	0.8 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. GM1, GM2, GMR, RPU11-RPU15, G2 and G3`	PM2.5—	0.75 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. G1, GE1 – GE5, and GER1`	PM2.5—	0.8 lb/hrhourly	per unit—	p. 13 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Caterpillar 3516C (Ref. No. GEN1)`	NOx as NO2—	38.85 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Caterpillar 3516C (Ref. No. GEN1)`	NOx as NO2—	3.95 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Caterpillar 3516C (Ref. No. GEN1)`	VOC—	1.13 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Caterpillar 3516C (Ref. No. GEN1)`	PM10—	0.62 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Caterpillar 3516C (Ref. No. GEN1)`	PM2.5—	0.62 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. G4 thru G6 Uncontrolled`	NOx as NO2uncontrolled	48.6 lb/hrhourly	per unit—	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Controlled with SCR`	NOx as NO2controlled	38.9 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. G4 thru G6 Uncontrolled`	NOx as NO2uncontrolled	8.09 lb/hrhourly	per unit—	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Controlled with SCR`	NOx as NO2controlled	8.90 lb/hrhourly	——	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. G4 thru G6 Uncontrolled`	VOCuncontrolled	4.10 lb/hrhourly	per unit—	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. G4 thru G6 Uncontrolled`	PM10uncontrolled	0.96 lb/hrhourly	per unit—	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. G4 thru G6 Uncontrolled`	PM2.5uncontrolled	0.96 lb/hrhourly	per unit—	p. 14 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. RPU11 thru RPU15, G1 thru G3, GE1 thru GE5, GM1, GM2, GMR, and GER1 (Combined)`	NOx as NO2—	49.4 tpyannual	combined—	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. No. GEN1`	NOx as NO2—	8.45 tpyannual	——	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. No. GEN1`	NOx as NO2—	57.85 tpyannual	——	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. G4 thru G6 (Combined)`	NOx as NO2—	36.40 tpyannual	combined—	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. RPU11 thru RPU15, G1 thru G3, GE1 thru GE5, GM1, GM2, GMR, and GER1 (Combined)`	NOx as NO2—	5.62 tpyannual	combined—	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. No. GEN1`	NOx as NO2—	4.49 tpyannual	——	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. No. GEN1`	NOx as NO2—	10.11 tpyannual	——	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. G4 thru G6 (Combined)`	NOx as NO2—	6.68 tpyannual	combined—	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. RPU11 thru RPU15, G1 thru G3, GE1 thru GE5, GM1, GM2, GMR, and GER1 (Combined)`	VOC—	3.74 tpyannual	combined—	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. No. GEN1`	VOC—	1.11 tpyannual	——	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. No. GEN1`	VOC—	4.85 tpyannual	——	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. G4 thru G6 (Combined)`	VOC—	3.07 tpyannual	combined—	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. RPU11 thru RPU15, G1 thru G3, GE1 thru GE5, GM1, GM2, GMR, and GER1 (Combined)`	PM10—	2.57 tpyannual	combined—	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. No. GEN1`	PM10—	0.54 tpyannual	——	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. No. GEN1`	PM10—	3.11 tpyannual	——	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. G4 thru G6 (Combined)`	PM10—	0.72 tpyannual	combined—	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. RPU11 thru RPU15, G1 thru G3, GE1 thru GE5, GM1, GM2, GMR, and GER1 (Combined)`	PM2.5—	2.57 tpyannual	combined—	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. No. GEN1`	PM2.5—	0.54 tpyannual	——	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. No. GEN1`	PM2.5—	3.11 tpyannual	——	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
`Ref. Nos. G4 thru G6 (Combined)`	PM2.5—	0.72 tpyannual	combined—	p. 15 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
	visible emissions—	5 percent opacityvisible	——	p. 17 ↗Machine-extracted from a page line in an older official PDF; literal context: 24. Visible Emission Limit – Visible emissions from each diesel engine gen-set (Ref. Nos. RPU11 thru RPU15, G1 thru G6, GE1 thru GE5, GM1, GM2, GMR, GER1, and GEN1) shall not exceed 5% opacity except during one six-minute period in any one hour in which visible emissions shall not exceed 10% opacity as determined by the EPA Method 9
	visible emissions—	10 percent opacityvisible	——	p. 17 ↗Machine-extracted from a page line in an older official PDF; literal context: RPU11 thru RPU15, G1 thru G6, GE1 thru GE5, GM1, GM2, GMR, GER1, and GEN1) shall not exceed 5% opacity except during one six-minute period in any one hour in which visible emissions shall not exceed 10% opacity as determined by the EPA Method 9 (reference 40 CFR 60, Appendix A). This condition applies at all times except during
	visible emissions—	20 percent opacityvisible	——	p. 17 ↗Machine-extracted from a page line in an older official PDF; literal context: Nos. RPU11 thru RPU15, G1 thru G6, GE1 thru GE5, GM1, GM2, GMR, GER1, and GEN1) shall not exceed 10% opacity except during one six-minute period in any one hour in which visible emissions shall not exceed 20% opacity. (9 VAC 5-80-1180 and 9 VAC 5-50-260)

DOCUMENT HISTORY

What this document says it changes

amended or superseding permit document

Explicitly supersedes the document dated 2018-08-01.

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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