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Virginia Administrative Code
Title 9. Environment
Agency 5. State Air Pollution Control Board
Chapter 520. Biomass Energy Generator General Permit for a Pilot Test Facility
12/22/2024

9VAC5-520-170. Permit emission threshold.

A. In determining whether a biomass pilot test facility is exempt from all new minor source review permit programs, the facility must be determined to be exempt under the provisions of 9VAC5-80 (Permits for Stationary Sources) and both subdivisions 1 and 2 of this subsection.

1. A biomass pilot test facility that measures uncontrolled emissions below the threshold values specified in Table 520-1 qualifies as an exempt facility. All biomass pilot test facilities and ancillary equipment shall be considered in the aggregate. A biomass pilot test facility that measures uncontrolled emissions at or above the permit emission threshold values specified in Table 520-1 provided it does not demonstrate it is a major source, shall obtain a permit according to the applicable provisions of 9VAC5-520-180 J 3.

TABLE 520-1
PERMIT EMISSION THRESHOLD VALUES

Pollutant

Combined Units (tons/year)

PM

25

PM10

15

PM2.5

10

NOX

40

SO2

40

CO

100

VOC

25

a. The PM, PM10, and PM2.5 values listed in Table 520-1 contain filterable and condensable particulates.

b. Permit emission threshold values for combined units listed in Table 520-1 include the qualified energy generator and any fuel preparation/storage emission units.

2. Any biomass pilot test facility with measurements that result in a potential to emit any toxic pollutant below threshold values specified in Article 5 (9VAC5-60-300 et seq.) of 9VAC5-60 (Hazardous Air Pollutant Sources) qualifies as an exempt facility. All biomass pilot test facilities and ancillary equipment shall be considered in the aggregate. Any biomass pilot test facility with measurements that result in a potential to emit any toxic pollutant at or above the threshold values specified in Article 5 (9VAC5-60-300 et seq.) of 9VAC5-60 (Hazardous Air Pollutant Sources) shall obtain a permit according to the applicable provisions of 9VAC5-520-180 J 3 .

B. No applicant shall cause or allow to be discharged into the atmosphere from any biomass pilot test facility any visible emissions in excess of 10% opacity as determined by Reference Method 9 (9VAC5-50-410) from any stack, vent or duct. This opacity standard shall apply at all times except during periods of startup, shutdown, and malfunction.

Statutory Authority

§ 10.1-1308.1 of the Code of Virginia; § 110(a) of the federal Clean Air Act; 40 CFR Part 51.

Historical Notes

Derived from Virginia Register Volume 27, Issue 17, eff. May 25, 2011.

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