West Virginia Code of State Rules › Agency 45 - Air Quality › Title 45 - LEGISLATIVE RULE DEPARTMENT OF ENVIRONMENTAL PROTECTION AIR QUALITY › Series 45-11 - Prevention Of Air Pollution Emergency Episodes › Section 45-11-3 - Episode Criteria

Current through Register Vol. XLI, No. 28, July 12, 2024
3.1.
				Conditions justifying the proclamation of an Air Pollution Alert or Air
				Pollution Warning shall exist whenever, the Director determines that the
				accumulation of air pollutants in any place is attaining or has attained levels
				which could, if such levels are exceeded, lead to an Air Pollution Emergency.
				In making this determination the Director shall be guided by the following
				criteria:
3.1.a. Air Pollution Forecast. An
				internal watch by the Director will be actuated by a National Weather Service
				advisory that an Atmospheric Stagnation Advisory is in effect or by the
				issuance of any equivalent local forecast or stagnant atmospheric conditions by
				the Director.
3.1.b. Air Pollution
				Alert. An alert shall be declared by the Director when any one of the following
				levels is reached at any monitoring site and meteorological conditions are such
				that pollutant concentrations can be expected to remain at these levels for
				twelve (12) or more hours or increase unless control actions are taken:
Sulfur Dioxide
800 micrograms per cubic meter (0.3 parts per million),
				  24-hour average
PM10
350 micrograms per cubic meter, 24-hour average
Carbon Monoxide
17 milligrams per cubic meter (15 parts per million), 8-hour
				  average
Ozone (O3)
400 micrograms per cubic meter (0.2 parts per million),
				  1-hour average
Nitrogen Dioxide
1,130 micrograms per cubic meter (0.6 parts per million),
				  1-hour average
282 micrograms per cubic meter (0.15 parts per million),
				  24-hour average
3.1.c. Air
				Pollution Warning. A warning shall be declared by the Director when any one of
				the following levels is reached at any monitoring site and meteorological
				conditions are such that pollutant concentrations can be expected to remain at
				these levels for twelve (12) or more hours or increase unless control actions
				are taken:
Sulfur Dioxide
1600 micrograms per cubic meter (0.6 parts per million),
				  24-hour average
PM10
420 micrograms per cubic meter, 24-hour average
Carbon Monoxide
34 milligrams per cubic meter (30 parts per million), 8-hour
				  average
Ozone (O3)
800 micrograms per cubic meter (0.4 parts per million),
				  1-hour average
Nitrogen Dioxide
2,260 micrograms per cubic meter (1.2 parts per million),
				  1-hour average
565 micrograms per cubic meter (0.3 parts per million),
				  24-hour average
3.1.d. Air Pollution
				Emergency. Conditions justifying the proclamation of an Air Pollution Emergency
				shall exist whenever the Director determines that the accumulation of air
				pollutants in any place has attained levels which require immediate action for
				the protection of the public health. The emergency level indicates that air
				quality is continuing to degrade and is approaching a level that should never
				be reached, and that the most stringent control actions are necessary. In
				making this determination, the Director shall declare any emergency when any
				one of the following levels is reached at any monitoring site and
				meteorological conditions are such that this condition can be expected to
				continue for twelve (12) or more hours:
Sulfur Dioxide
2100 micrograms per cubic meter (0.8 parts per million),
				  24-hour average
PM10
500 micrograms per cubic meter, 24-hour average
Carbon Monoxide
46 milligrams per cubic meter (40 parts per million), 8-hour
				  average
Ozone (O3)
1000 micrograms per cubic meter (0.5 parts per million),
				  1-hour average
Nitrogen Dioxide
3,000 micrograms per cubic meter (1.6 parts per million),
				  1-hour average
750 micrograms per cubic meter (0.4 parts per million),
				  24-hour average
An air pollution emergency will be declared by an order
				  entered by the Director with the written approval of the Governor.
3.1.e. Termination. Once declared, any status
				reached by application of these criteria will remain in effect until the
				criteria for that level are no longer met. At such time, the next lower status
				will be assumed.