QA status Machine-extractedRelease dated July 29, 2026
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EVIDENCE NOTE
What the public record says
A machine-extracted candidate of equipment groups and permit limits stated in Virginia DEQ permit 74074-6, 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
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
8 through 11
emergency engine generator setCaterpillar · 3516C
4 units2500 kW each
diesel fuel oil—
See operating-scope table—
p. 4 ↗Machine-extracted from an official document equipment table; column grouping requires second review.
4 and 5
emergency engine generator setCaterpillar · 3512C
2 units1500 kW each
diesel fuel oil—
See operating-scope table—
p. 4 ↗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
4 and 5
100 hours/year
Corporate Office Properties, L. P. Registration Number: 74074 May 18, 2022 Page 5 5. Operating Hours – Each individual emergency diesel engine gen-set (Ref. Nos. 4 and 5) shall not operate more than 100 hours per year for unscheduled maintenance, testing, operational training, scheduled maintenance checks, and readiness testing (as provided in Conditions 4.c and 4.d) and no more than 500 hours per year for all purposes (as provided iMachine-extracted normative operating-hours statement; second review pending.
y diesel engine gen-set (Ref. Nos. 4 and 5) shall not operate more than 100 hours per year for unscheduled maintenance, testing, operational training, scheduled maintenance checks, and readiness testing (as provided in Conditions 4.c and 4.d) and no more than 500 hours per year for all purposes (as provided in Condition 4) combined. Each individual emergency diesel engine gen-set (Ref. Nos. 8 through 11) shall not operate more than 500 hours per year for all purposes (as provided in ConditionMachine-extracted normative operating-hours statement; second review pending.
cks, and readiness testing (as provided in Conditions 4.c and 4.d) and no more than 500 hours per year for all purposes (as provided in Condition 4) combined. Each individual emergency diesel engine gen-set (Ref. Nos. 8 through 11) shall not operate more than 500 hours per year for all purposes (as provided in Condition 4) 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.
17 pollutant, unit-group and limit rows. These are permit terms, not measured or actual emissions.
Inspect 17 transcribed limit rows
Reference
Pollutant
Limit
Basis / scope
Source
Caterpillar 3512C Ref. Nos. 4 and 5
NOx as NO2—
29.18 lb/hrhourly
per unit—
p. 8 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
Caterpillar 3512C Ref. Nos. 4 and 5 (units combined)
NOx as NO2—
14.59 tpyannual
combined—
p. 8 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
Caterpillar 3512C Ref. Nos. 4 and 5
NOx as NO2—
4.36 lb/hrhourly
per unit—
p. 8 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
Caterpillar 3512C Ref. Nos. 4 and 5 (units combined)
NOx as NO2—
2.18 tpyannual
combined—
p. 8 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
Caterpillar 3516C Ref. Nos. 8 through 11
NOx as NO2—
48.07 lb/hrhourly
per unit—
p. 8 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
Caterpillar 3516C Ref. Nos. 8 through 11 (units combined)
NOx as NO2—
48.07 tpyannual
combined—
p. 8 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
Caterpillar 3516C Ref. Nos. 8 through 11
NOx as NO2—
6.01 lb/hrhourly
per unit—
p. 8 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
Caterpillar 3516C Ref. Nos. 8 through 11 (units combined)
NOx as NO2—
6.01 tpyannual
combined—
p. 8 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
Caterpillar 3516C Ref. Nos. 8 through 11
VOC—
1.20 lb/hrhourly
per unit—
p. 8 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
Caterpillar 3516C Ref. Nos. 8 through 11 (units combined)
VOC—
1.20 tpyannual
combined—
p. 8 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
Caterpillar 3516C Ref. Nos. 8 through 11
PM10—
0.61 lb/hrhourly
per unit—
p. 8 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
Caterpillar 3516C Ref. Nos. 8 through 11 (units combined)
PM10—
0.61 tpyannual
combined—
p. 8 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
Caterpillar 3516C Ref. Nos. 8 through 11
PM2.5—
0.61 lb/hrhourly
per unit—
p. 8 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
Caterpillar 3516C Ref. Nos. 8 through 11 (units combined)
PM2.5—
0.61 tpyannual
combined—
p. 8 ↗Machine-extracted from an official permit limit table; header grouping requires second review.
visible emissions—
5 percent opacityvisible
——
p. 9 ↗Machine-extracted from a page line in an older official PDF; literal context: Page 7 10. Visible Emission Limit – Visible emissions from each emergency diesel engine gen-set (Ref. Nos. 4, 5, and 8 through 11) exhaust 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: 10. Visible Emission Limit – Visible emissions from each emergency diesel engine gen-set (Ref. Nos. 4, 5, and 8 through 11) exhaust 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. 9 ↗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 2018-01-10.