Section 20. Terms defined

"Affected unit" means one or more emergency generation units subject to the provisions of this chapter.

"Aggregate rated electrical power output" means (i) the sum or total rated electrical power output for all affected units involved in the application or (ii) in nonattainment areas, the sum or total rated electrical output for all affected units, permitted or exempt, located at the facility.

"Attainment area" means any area (other than an area identified as a nonattainment area) that meets the national ambient air quality standards for any pollutant pursuant to § 107 of the federal Clean Air Act (42 USC § 7401 et seq.).

"Biodiesel fuel" means a fuel comprised of mono-alkyl esters of long chain fatty acids derived from vegetable or animal fats, designated B100, and meeting the requirements of ASTM D6751-09.

"Biodiesel blends" means a blend of biodiesel and petroleum diesel fuel meeting either the requirements of ASTM D975-10b (blends up to 5.0%) or ASTM D7467 (blends between 6.0% and 20% biodiesel) and designated Bxx where xx represents the biodiesel content of the blend, e.g., B20 for a blend of 20% biodiesel and 80% petroleum diesel fuel.

"Compression ignition unit" or "CI unit" means a type of stationary internal combustion engine that is not a spark ignition engine.

"Demand response" means measures aimed at shifting time of use of electricity from peak-use periods to times of lower demand by inducing retail customers to curtail electricity usage during periods of congestion and higher prices in the electrical grid. Demand response actions are typically undertaken by the source owner in response to a request from a utility or electrical grid system operator or in response to market prices. Demand response participants do not include affected units that are participating in an ISO's Manual 13 Emergency Operations program.

"Diesel fuel" means any liquid obtained from the distillation of petroleum with a boiling point of approximately 150°C to 360°C and that complies with the specifications for S15 diesel fuel oil, as defined by the American Society for Testing and Materials in ASTM D975-10b.

"Emergency" means a condition that arises from sudden and reasonably unforeseeable events where the primary energy or power source is disrupted or disconnected due to conditions beyond the control of an owner of a source including any of the following:

1. A failure of the electrical grid.

2. On-site disaster or equipment failure.

3. Public service emergencies such as flood, fire, natural disaster, or severe weather conditions.

4. An ISO-declared emergency, where an ISO emergency is any of the following:

a. An abnormal system condition requiring manual or automatic action to maintain system frequency, to prevent loss of firm load, equipment damage, or tripping of system elements that could adversely affect the reliability of an electric system or the safety of persons or property.

b. Capacity deficiency or capacity excess conditions.

c. A fuel shortage requiring departure from normal operating procedures in order to minimize the use of such scarce fuel.

d. Abnormal natural events or man-made threats that would require conservative operations to posture the system in a more reliable state.

e. An abnormal event external to the ISO service territory that may require ISO action.

"Emergency generation unit or source" means a stationary internal combustion engine that operates only during an emergency, required maintenance, or operability and emissions testing.

"General permit" means, for an emergency generation unit, the terms and conditions in Part IV (9VAC5-540-140 et seq.) of this chapter that meet the requirements of Part II (9VAC5-540-30 et seq.) and Part III (9VAC5-540-90 et seq.) of this chapter and issued under the provisions of 9VAC5-80-1250.

"Identical affected unit" means electric generating units that have the same make, manufacturer, model, year, size, and fuel specifications.

"Independent system operator" or "ISO" means a person who may receive or has received by transfer pursuant to § 56-576 of the Code of Virginia, any ownership or control of, or any responsibility to operate, all or part of the transmission systems in the Commonwealth.

"Integration operational period" means that period of time beginning with the first time the affected unit is started on-site and ending when the affected unit is fully integrated with the source's electrical system. In no case shall this period exceed 30 days.

"ISO-declared emergency" means a condition that exists when the independent system operator, as defined in § 56-576 of the Code of Virginia, notifies electric utilities that an emergency exists or may occur and that complies with the definition of "emergency" adopted by the board.

"Kilowatt (kW) to brake horsepower (bhp)" means the conversion of 1 kW = 1.341 bhp.

"Load curtailment" means an action similar to demand response, with the specific removal or reduction of electrical loads for a limited period of time from a utility grid system in response to a request from the utility or electrical grid system operator.

"Major new source review (major NSR) program" means a preconstruction review and permit program (i) for new major stationary sources or major modifications (physical changes or changes in the method of operation), (ii) established to implement the requirements of §§ 112, 165, and 173 of the federal Clean Air Act (42 USC §§ 7401 et seq.) and associated regulations, and (iii) codified in Article 1 (9VAC5-80-50 et seq.), Article 7 (9VAC5-80-1400 et seq.), Article 8 (9VAC5-80-1605 et seq.) and Article 9 (9VAC5-80-2000 et seq.) of Part II (Permit Procedures) of 9VAC5-80 (Permits for Stationary Sources.

"Manufacturer certified emissions" means the emission levels from a stationary compression ignition engine as identified according to the manufacturers' specifications applicable to that engine's family and model year.

"Model year" means either (i) the calendar year in which the engine was originally produced or (ii) the annual new model production period of the engine manufacturer if it is different than the calendar year. This must include January 1 of the calendar year for which the model year is named. It may not begin before January 2 of the previous calendar year and it must end by December 31 of the named calendar year. For an engine that is converted to a stationary engine after being placed into service as a nonroad or other nonstationary engine, model year means the calendar year or new model production period in which the engine was originally produced.

"Nonattainment area" means any area that does not meet the national ambient air quality standards for any pollutant pursuant to § 107 of the federal Clean Air Act (42 USC § 7401 et seq.) and listed in 9VAC5-20-204.

"Operation" means the burning of fuel regardless of whether electricity is generated.

"Peak shaving" means measures aimed solely at shifting time of use of electricity from peak-use periods to times of lower demand by inducing retail customers to curtail electricity usage during periods of congestion and higher prices in the electrical grid. Peak shaving is typically undertaken at a source owner's discretion in order to reduce maximum electrical usage and, therefore, cost of electrical service to the source owner.

"Reference method" means any method of sampling and analyzing for an air pollutant as described in the following EPA regulations:

1. For ambient air quality standards in 9VAC5-30 (Ambient Air Quality Standards): the applicable appendix of 40 CFR Part 50 or any method that has been designated as a reference method in accordance with 40 CFR Part 53, except that it does not include a method for which a reference designation has been canceled in accordance with 40 CFR 53.11 or 40 CFR 53.16;

2. For emission standards in 9VAC5-40 (Existing Stationary Sources) and 9VAC5-50 (New and Modified Stationary Sources): Appendix M of 40 CFR Part 51 or Appendix A of 40 CFR Part 60; or

3. For emission standards in 9VAC5-60 (Hazardous Air Pollutant Sources): Appendix B of 40 CFR Part 61 or Appendix A of 40 CFR Part 63.

"Spark ignition unit" or "SI unit" means a natural gas or liquefied petroleum gas fueled engine or any other type of engine with a spark plug (or other sparking device) and with operating characteristics significantly similar to the theoretical Otto combustion cycle. Spark ignition engines usually use a throttle to regulate intake air flow to control power during normal operation. Dual-fuel engines in which a liquid fuel (typically diesel fuel) is used for compression ignition and gaseous fuel (typically natural gas) is used as the primary fuel at an annual average ratio of less than 2 parts diesel fuel to 100 parts total fuel on an energy equivalent basis are spark ignition engines.

"Startup" means the date on which each affected unit completes the integration operational period, unless an extension for start-up notification as stated in subdivision 4 of 9VAC5-540-210 is approved by the department. An extension request must be submitted seven days prior to the end of the 30-day integration operational period.

"Virginia Air Pollution Control Law" means Chapter 13 (§ 10.1-1300 et seq.) of Title 10.1 of the Code of Virginia.

Historical Notes

Derived from Volume 27, Issue 23, eff. August 17, 2011; Errata, 28:14 VA.R. 1283 March 12, 2012.

Statutory Authority

§§ 10.1-1307.2 and 10.1-1308 of the Code of Virginia.