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 73798-1, with one-based PDF page citations. Permitted terms do not establish actual operation or emissions.
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
1 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—
4 unitsNo reliable per-unit rating transcribed
diesel fuel oil—
See operating-scope table—
p. 1 ↗Machine-extracted from explicit permit prose: Dubler: Attached is a permit to operate four emergency diesel engine driven generator sets at your Northrop Grumman Systems Corporation, located at 7575 Coleshire Drive, McLean, Virgini
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
1-4
500 hours/year
ll emissions from operations under scenarios 4.a. through 4.c above, shall not exceed the limits stated in Condition 5. (9 VAC 5-80-850) 5. Operating Hours - The operating hours for each diesel engine driven generator set (Ref. No 1-4) shall each be less than 500 hours per year, calculated monthly as the sum of each consecutive twelve month period. Refer to Condition 16 for recordkeeping requirements to demonstrate compliance with this condition. (9 VAC 5-80-850) 6. Operation of the diesel engMachine-extracted normative operating-hours statement; second review pending.
4 pollutant, unit-group and limit rows. These are permit terms, not measured or actual emissions.
Inspect 4 transcribed limit rows
Reference
Pollutant
Limit
Basis / scope
Source
diesel engine driven generator set (Ref. Nos. 1-4)
NOx as NO2—
24.40 tpyannual
——
p. 7 ↗Machine-extracted from a page line in an older official PDF; literal context: diesel engine driven generator set (Ref. Nos. 1-4) shall not exceed the limits specified below: Nitrogen Oxides (as N02) 24.40 tons/yr Carbon Monoxide (CO) 3.90 tons/yr
diesel engine driven generator set (Ref. Nos. 1-4)
NOx as NO2—
3.90 tpyannual
——
p. 7 ↗Machine-extracted from a page line in an older official PDF; literal context: below: Nitrogen Oxides (as N02) 24.40 tons/yr Carbon Monoxide (CO) 3.90 tons/yr Volatile Organic Compounds (VOC) 0.77 tons/yr
diesel engine driven generator set (Ref. Nos. 1-4)
VOC—
0.77 tpyannual
——
p. 7 ↗Machine-extracted from a page line in an older official PDF; literal context: Nitrogen Oxides (as N02) 24.40 tons/yr Carbon Monoxide (CO) 3.90 tons/yr Volatile Organic Compounds (VOC) 0.77 tons/yr
PM10—
0.40 tpyannual
——
p. 8 ↗Machine-extracted from a page line in an older official PDF; literal context: March 2, 2011 Page 6 Particulate Matter (PM-10) 0.40 tons/yr These emissions are derived from the estimated overall emission contribution from
DOCUMENT HISTORY
What this document says it changes
No separate amendment-history row is published for this Release 2 record.
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.