10 CSR 10-6.130
Controlling Emissions During Episodes of High Air Pollution Potential
PURPOSE: This rule specifies the conditions that establish air
pollution alert and emergency alert levels and the associated
procedures and emissions reduction objectives.
(1) Applicability.
(A) This rule shall apply to all sources and premises
throughout the entire state with air emissions that contribute
to sulfur dioxide (SO2), carbon monoxide (CO), ozone (O3),
nitrogen dioxide (NO2), or Particulate Matter—10 Micron (PM10)
and 2.5 Micron (PM2.5).
(B) The boundaries of the affected area shall be determined at
the discretion of the director in accordance with the nature and
magnitude of the pollutant concentrations and meteorological
conditions that cause the alert.
(2) Definitions. Definitions of certain terms specified in this rule
may be found in 10 CSR 10-6.020.
(3) General Provisions.
(A) Air Pollution Alerts.
1. The Air Quality Index shall be reported to the general
public on a daily basis by all metropolitan statistical areas
with a population exceeding three hundred fifty thousand
(350,000).
2. Alert levels for applicable air pollutants are stated in
terms of the Air Quality Index (AQI) as defined in 40 CFR 58,
Appendix G. Table A shows the relation of the AQI ranges to
alert categories.
3. Alert types and levels of initiation. If an AQI value
falls within the AQI range listed in Table A of this rule, the
corresponding alert color shall be initiated.
4. Declaration of alerts. An orange alert, red alert, purple
alert, or maroon emergency alert may be declared on the basis
of deteriorating air quality alone; an Air Stagnation Advisory
need not be in effect. The appropriate alert level should be
declared by the director as ambient monitoring would indicate.
5. Termination of alerts. When, in the judgment of the di
rector, meteorological conditions and pollutant concentrations
warrant discontinuance of any alert condition, the director
shall notify the technical staff, the chairman, and members of
the Missouri Air Conservation Commission that the alert has
been discontinued and issue a public notice to that effect.
(B) Conditions. This subsection provides conditions that
establish alert level categories.
Table A
AQI
AQI
Alert Category
Alert
Color
0–50
Good
Green
51–100
Moderate
Yellow
101–150 Unhealthy for
Sensitive
groups
Orange
151–200
Unhealthy
Red
201–300 Very Unhealthy Purple
301–400
Hazardous
Maroon
401–500
Hazardous
Maroon
RESOURCES
(C) Procedures. This subsection establishes procedures for
addressing alert level conditions.
Table B
Conditions for Alert Level Categories
Orange (101-150)
Red (151-200)
Purple (201-300)
Maroon (301-500)
This alert level AQI value is
equaled or exceeded at any
one (1) monitoring station
within the affected area,
unless there is a current
forecast of meteorological
improvement within the next
twenty-four (24) hours.
-- and --
Meteorological conditions are
such that the conditions can
be expected to remain or
reoccur in this alert level
range during the next twentyfour (24) or more hours or
increase unless control actions
are taken.
This alert level AQI value is
equaled or exceeded at any
one (1) monitoring station
within the affected area,
unless there is a current
forecast of meteorological
improvement within the next
twenty-four (24) hours.
-- and --
Meteorological conditions are
such that the conditions can
be expected to remain or
reoccur in this alert level
range during the next twentyfour (24) or more hours or
increase unless control actions
are taken.
This alert level AQI value is
equaled or exceeded at any
one (1) monitoring station
within the affected area.
This alert level AQI value is
equaled or exceeded at any
one (1) monitoring station
within the affected area.
-- or --
This alert level AQI value is
equaled or exceeded as the
arithmetic mean for twelve
(12) consecutive hours and an
Air Stagnation Advisory is in
effect.
-- or --
This alert level AQI value is
equaled or exceeded as the
arithmetic mean for twelve
(12) consecutive hours and a
forecast of stagnation for the
following twelve (12) hours is
received.
-- or --
The red alert AQI value is
equaled or exceeded as the
arithmetic mean for twentyfour (24) consecutive hours
and a forecast of stagnation
for the following twelve (12)
hours is received.
-- or --
The purple alert AQI value is
equaled or exceeded as the
arithmetic mean for twentyfour (24) consecutive hours
and a forecast of stagnation
for the following twelve (12)
hours is received.
-- or --
The red alert AQI value is
equaled or exceeded as the
arithmetic mean for thirty-six
(36) consecutive hours and a
forecast of stagnation for the
following twelve (12) hours is
received.
Table C
Procedures
Red (151-200)
Purple (201-300)
Maroon (301-500)
The general public shall be informed
through the news media that an alert of
this level exists, the geographical area(s)
where the alert is applicable, the
emission and type of source(s) that
initiated the alert, individual abatement
actions that will help alleviate the
problem, and encourage those with
respiratory ailments or heart conditions
to take the most appropriate and
expedient precautions.
The general public shall be informed
through the news media that an alert of
this level exists, the geographical area(s)
where the alert is applicable, the
emission and type of source(s) that
initiated the alert, individual abatement
actions that will help alleviate the
problem, and encourage those with
respiratory ailments or heart conditions
to take the most appropriate and
expedient precautions.
The general public shall be informed
through the news media that an alert of
this level exists, the geographical area(s)
where the alert is applicable, the
emission and type of source(s) that
initiated the alert, individual abatement
actions that will help alleviate the
problem, and encourage those with
respiratory ailments or heart conditions
to take the most appropriate and
expedient precautions.
All affected governmental control
agencies shall be notified of the existing
alert level and that coordination of action
is required.
All affected governmental control
agencies shall be notified of the existing
alert level and that coordination of action
is required.
All affected governmental control
agencies shall be notified of the existing
alert level and that coordination of action
is required.
All hospitals within the affected area
shall be notified of the existing alert level
and be prepared for an increase in the
number of patients seeking treatment.
All hospitals within the affected area
shall be notified of the existing alert level
and be prepared for an increase in the
number of patients seeking treatment.
All hospitals within the affected area
shall be notified of the existing alert level
and be prepared for an increase in the
number of patients seeking treatment.
The frequency of air monitoring shall be
increased at all monitoring stations that
are not continuous at intervals not
exceeding one (1) hour with continual
hourly review at a central control
location, if this equipment is available
and it is deemed necessary by the
director.
The frequency of air monitoring shall be
increased at all monitoring stations that
are not continuous at intervals not
exceeding one (1) hour with continual
hourly review at a central control
location, if this equipment is available
and it is deemed necessary by the
director.
The frequency of air monitoring shall be
increased at all monitoring stations that
are not continuous at intervals not
exceeding one-half (1/2) hour with
continual half-hour review at a central
control location, if this equipment is
available and it is deemed necessary by
the director.
All open burning shall cease throughout
the affected area.
All open burning and incineration shall
cease throughout the affected area.
All open burning and incineration shall
cease throughout the affected area.
The general public shall be requested
through the news media to restrict the
unnecessary use of motor vehicles.
The general public shall be told through
the news media that local vehicular
traffic shall avoid certain areas and all
unnecessary use of motor vehicles is
restricted. Nonlocal vehicular traffic may
be diverted around the affected area
depending upon which pollutant(s)
caused the existing conditions.
The use of motor vehicles is prohibited
except in emergencies with the approval
of local or state police.
RESOURCES
Airlines operating within the purple alert
area shall be notified that those
conditions exist and that a reduction of
flights out of the airport may be
required.
All airplane flights originating within the
area of the maroon emergency alert shall
be cancelled.
If requested by the director, facilities that
are sources of air contaminant emissions
are required to file alert plans in
accordance with section (4) of this rule
and shall be prepared to implement the
plan upon notification by the director in
the event of a purple alert.
If requested by the director, facilities that
are sources of air contaminant emissions
are required to file alert plans in
accordance with section (4) of this rule
and shall be prepared to implement the
plan upon notification by the director in
the event of a maroon emergency alert.
All places of employment described as
follows shall immediately cease
operation during a maroon emergency
alert: mining and quarrying; contract
construction work; wholesale trade
establishments; schools and libraries;
governmental agencies except those
needed to administer the air pollution
alert program and other essential
agencies determined by the director to be
vital for public safety and welfare and
needed to administer the provisions of
this rule; retail trade stores except those
dealing primarily in sale of food or
pharmacies; banks, real estate agencies,
insurance offices, and similar business;
laundries, cleaners and dryers, beauty
and barber shops, and photographic
studios; amusement, recreational,
gaming, and entertainment service
establishments; automobile repair and
automobile service garages; and
advertising offices, consumer credit
reporting, adjustment and collection
agencies, printing and duplicating
services, rental agencies, and
commercial testing laboratories.
All manufacturing facilities except those
required to submit alert plans shall
institute action that will result in
maximum reduction of air contaminants
from their operations by ceasing,
curtailing, or postponing operations to
the extent possible without causing injury
to persons or damage to equipment.
(4) Reporting and Record Keeping. Facilities that are sources
of air contaminant emissions and required to file alert plans
per Table C of this rule shall file purple and maroon alert plans
with the director within sixty (60) days of the director’s request.
Alert plans shall—
(A) Address the objectives provided in Tables D, E, and F; and
(B) Include the planning necessary for implementation.
Updates to alert plans, including requests for rescissions, shall
be provided when changes to operations necessitate.
Table D
Purple Alert (201-300) Plan Objectives
Sources
Objectives
Electric power generating facilities
Reduction of emissions by diverting electric power generation to
facilities outside of area for which the alert is called.
If applicable, reduce emissions by utilization of fuels having low
ash and sulfur content. If applicable, soot blowing and boiler
lancing to be allowed only during periods of high atmospheric
turbulence (12:00 noon to 4:00 p.m.).
Process steam generating facilities
Reduction of steam load demands consistent with continuing the
operation of the plant.
If applicable, reduce emissions by utilization of fuels having low
ash and sulfur content. If applicable, soot blowing and boiler
lancing to be allowed only during periods of high atmospheric
turbulence (12:00 noon to 4:00 p.m.).
Manufacturing industries of the following Standard
Industrial Classification Manual (SIC) group designations:
grain industries, group 20; paper and allied products
industries, group 26; chemicals and allied products
industries, group 28; petroleum refining and related
industries, group 29; stone, glass, clay, and concrete
product industries, group 32; primary metal industries,
group 33
Reduction of heat load demands for processing to a minimum.
Reduction of air contaminant emissions by curtailing, postponing,
or deferring production and allied operations. Stoppage of all trade
waste disposal practices that emit particles, gases, vapors, or
malodorous substances including incineration.
Other manufacturing facilities required to submit alert
plans by the director
Reduction of heat load demands for processing to a minimum.
Reduction of air contaminant emissions by curtailing, postponing,
or deferring production and allied operations. Stoppage of all trade
waste disposal practices that emit particles, gases, vapors, or
malodorous substances including incineration.
Private, public, and commercial operations
For refuse disposal, stoppage of all open burning including disposal
of trees and burning at fire-fighting schools, except as required for
disposal of hazardous materials or other emergency needs.
For refuse disposal, operation of incinerators shall cease per Table
C of this rule.
Transportation
See Table C of this rule for motor vehicle restrictions.
RESOURCES
Table E
Maroon Emergency Alert (301-400) Plan Objectives
Sources
Objectives
Electric power generating facilities
Reduction of emissions by diverting electric power generation to
facilities outside of area for which the alert is called.
If applicable, reduce emissions by utilization of fuels having low
ash and sulfur content. If applicable, soot blowing and boiler
lancing to be allowed only during periods of high atmospheric
turbulence (12:00 noon to 4:00 p.m.).
Process steam generating facilities
If applicable, obtain maximum reduction of air contaminant
emissions by utilization of fuels having the lowest ash and sulfur
content.
If applicable, maximize use of periods of high atmospheric
turbulence (12:00 noon to 4:00 p.m.) for soot blowing and boiler
lancing.
Manufacturing industries of the following Standard
Industrial Classification Manual (SIC) group designations:
grain industries, group 20; paper and allied products
industries, group 26; chemicals and allied products
industries, group 28; petroleum refining and related
industries, group 29; stone, glass, clay, and concrete
product industries, group 32; primary metal industries,
group 33
Maximum reduction of heat load demands for processing.
Maximum reduction of air contaminant emissions by, if necessary,
postponing production and allied operations. Stoppage of all trade
waste disposal practices that emit particles, gases, vapors, or
malodorous substances including incineration.
Other manufacturing facilities required to submit alert
plans by the director
Maximum reduction of heat load demands for processing.
Maximum reduction of air contaminant emissions by, if necessary,
postponing production and allied operations. Stoppage of all trade
waste disposal practices that emit particles, gases, vapors, or
malodorous substances including incineration.
Private, public, and commercial operations
For refuse disposal, stoppage of all open burning including disposal
of trees and burning at fire-fighting schools, except as required for
disposal of hazardous materials or other emergency needs.
For refuse disposal, operation of incinerators shall cease per Table
C of this rule.
Transportation
See Table C of this rule for motor vehicle restrictions.
Table F
Maroon Emergency Alert (401-500) Plan Objectives
Sources
Objectives
Electric power generating facilities
Reduction of emissions by diverting electric power generation to
facilities outside of area for which the alert is called.
If applicable, reduce emissions by utilization of fuels having low
ash and sulfur content. If applicable, soot blowing and boiler
lancing to be allowed only during periods of high atmospheric
turbulence (12:00 noon to 4:00 p.m.).
Process steam generating facilities
Maximum reduction of air contaminant emissions by reducing heat
and steam load demands to values consistent with preventing
equipment damage.
If applicable, maximize use of periods of high atmospheric
turbulence (12:00 noon to 4:00 p.m.) for soot blowing and boiler
lancing.
Manufacturing industries of the following Standard
Industrial Classification Manual (SIC) group designations:
grain industries, group 20; paper and allied products
industries, group 26; chemicals and allied products
industries, group 28; petroleum refining and related
industries, group 29; stone, glass, clay, and concrete
product industries, group 32; primary metal industries,
group 33
Maximum reduction of heat load demands for processing.
Elimination of air contaminant emissions from the manufacturing
operations by ceasing, curtailing, postponing, or deferring
production and allied operations to the extent possible without
causing injury to persons or damage to equipment.
Other manufacturing facilities required to submit alert
plans by the director
Maximum reduction of heat load demands for processing.
Elimination of air contaminant emissions from the manufacturing
operations by ceasing, curtailing, postponing, or deferring
production and allied operations to the extent possible without
causing injury to persons or damage to equipment.
Private, public, and commercial operations
For refuse disposal, stoppage of all open burning including disposal
of trees and burning at fire-fighting schools, except as required for
disposal of hazardous materials or other emergency needs.
For refuse disposal, operation of incinerators shall cease per Table
C of this rule.
The following places of employment, if notified by the director,
immediately shall cease operations: mining and quarrying
operations; construction projects except as required to avoid
emergent physical harm; manufacturing establishments except those
required to have in force an air pollution alert plan; wholesale trade
establishments; governmental units, except as required to
implement the provisions of this rule and other operations essential
to immediate protection of the public welfare and safety; retail trade
and service establishments except pharmacies, food stores, and
other similar operations providing for emergency needs; other
commercial service operations, such as those engaged in banking,
insurance, real estate, advertising, and the like; educational
institutions; and amusement, recreational, gaming, and
entertainment facilities.
Transportation
See Table C of this rule for motor vehicle restrictions.
RESOURCES
(5) Test Methods. The testing references for Missouri ambient
air quality data are as specified in 10 CSR 10-6.040 Reference
Methods.
AUTHORITY: section 643.050, RSMo Supp. 2013.* Original rule
filed May 11, 1984, effective Oct. 11, 1984. Amended: Filed Jan. 5,
1988, effective April 28, 1988. Amended: Filed March 13, 2002,
effective Nov. 30, 2002. Amended: Filed Sept. 24, 2009, effective
May 30, 2010. Amended: Filed May 7, 2013, effective Dec. 30, 2013.
*Original authority: 643.050, RSMo 1965, amended 1972, 1992, 1993, 1995, 2011.