133.5 Operator’s Guide for Anti-Icing - Revision history

Hoskir: /* 133.5.3 Tables */ updated formatting on the tables

2026-07-24T16:34:37Z

133.5.3 Tables: updated formatting on the tables

Hoskir: /* 133.5.1 Operations Guide for Maintenance Field Personnel */

2026-07-24T14:22:40Z

133.5.1 Operations Guide for Maintenance Field Personnel

← Older revision		Revision as of 09:22, 24 July 2026
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	Comments and notes are given in each table where appropriate to further guide field maintenance personnel for their anti-icing operations.		Comments and notes are given in each table where appropriate to further guide field maintenance personnel for their anti-icing operations.

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	! Tables \|\| Printable pdf Files		! Tables \|\| Printable pdf Files
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	\| ● [[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.6.5 Type 1 Winter Event: More than 12 inches of snow in 24 hours OR more than ¾ inch of ice\|Type 1 Winter Event: More than 12 inches of snow in 24 hours OR more than ¾ inch of ice]] \|\| ● [[media:Table 133.5.3.6.5 Type 1.doc\|Type 1 Winter Event]]		\| ● [[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.6.5 Type 1 Winter Event: More than 12 inches of snow in 24 hours OR more than ¾ inch of ice\|Type 1 Winter Event: More than 12 inches of snow in 24 hours OR more than ¾ inch of ice]] \|\| ● [[media:Table 133.5.3.6.5 Type 1.doc\|Type 1 Winter Event]]
	\|}		\|}

	~~{\| style="width: 750px; margin: 0 auto;"~~
	\|}

	==133.5.2 Glossary==		==133.5.2 Glossary==

Hoskir at 15:36, 16 July 2026

2026-07-16T15:36:47Z

Hoskir at 13:38, 16 July 2026

2026-07-16T13:38:12Z

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-[[image:133.5.jpg|left|350px]]
+<div style="float: right; width: 550px; margin-top: 5px; margin-left: 30px; margin-bottom: 30px;">__TOC__</div>
-{|style="padding: 0.3em; margin-left:15px; border:3px solid #a9a9a9; text-align:left; font-size: 95%; background:#f5f5f5" width="250px" align="right"
+{| style="margin-left:15px; margin-top: 5px; border:1px solid #a9a9a9; background:#f5f5f5" width="450px" align="right"
 |-
-|[[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.6.3 Type 3 Winter Event: 1 – 6 in. of snow/frozen precipitation in 24 hours OR a trace to 1/2 in. of ice|Type 3 Winter Event:  1 – 6 in. of snow/frozen precipitation in 24 hours OR a trace to 1/2 in. of ice ]] ||style="background:#FFFFCC"|[[media: Table 133.5.3.6.3 Type 3.doc|Type 3 Winter Event]]
+| style="text-align:center;" | '''<u>Related Information</u>'''
 |-
-|[[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.6.4 Type 2 Winter Event: 6 – 12 in. of snow in 24 hours OR ½ to ¾ in. of ice|Type 2 Winter Event:  6 – 12 in. of snow in 24 hours OR ½ to ¾ in. of ice]] ||style="background:#FFFFCC"|[[media: Table 133.5.3.6.4 Type 2.doc|Type 2 Winter Event]]
+| ● [[:Category:948 Incident Response Plan and Emergency Response Management|Incident Response Plan and Emergency Response Management]]
 |-
-|[[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.6.5 Type 1 Winter Event: More than 12 inches of snow in 24 hours OR more than ¾ inch of ice|Type 1 Winter Event:  More than 12 inches of snow in 24 hours OR more than ¾ inch of ice]] ||style="background:#FFFFCC"|[[media:Table 133.5.3.6.5 Type 1.doc|Type 1 Winter Event]]
+| ● [http://wwwi.dot.missouri/intranet/hr/hred/documents/MoDOTSnowAcademyparticipantbook.pdf MoDOT Snow Academy Official Guide, Participant's Manual] and [http://wwwi.dot.missouri/intranet/hr/hred/roadeo.htm Snow Academy Website]
 |}
 Anti-icing is the snow and ice control practice of preventing the development of a bond between snow and/or ice and the pavement surface with the timely application of salt. Applying the right amount of salt at the right time will make snow removal operations more efficient and produce safer driving conditions during winter storms.
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 ==133.5.2 Glossary==
 [[image:133.5.2.jpg|right|225px|thumb|<center>'''Preparing for winter weather in Butler County'''</center>]]
 '''Black ice.''' Popular term for a very thin coating of clear, bubble-free, homogenous ice which forms on a pavement with a temperature at or slightly above 32º F when the temperature of the air in contact with the ground is below the freezing-point of water and small slightly supercooled water droplets deposit on the surface and coalesce (flow together) before freezing.

Smithk: Per TP, updated Major Highway System map

2022-06-03T13:08:15Z

Per TP, updated Major Highway System map

← Older revision		Revision as of 08:08, 3 June 2022
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	'''Brine.''' Water saturated with common salt (NaCl), also liquid salt or liquid chemical.		'''Brine.''' Water saturated with common salt (NaCl), also liquid salt or liquid chemical.

	'''Continuous Operations Routes.''' This system includes all [[media:144 Major Highway System ~~2021~~.pdf\|major highways]], minor highways with traffic volumes of 2,500 ADT or greater and other urban and community routes designated by the district in consultation with the Maintenance Division. This also includes all designated incident bypass routes.		'''Continuous Operations Routes.''' This system includes all [[media:144 Major Highway System 2022.pdf\|major highways]], minor highways with traffic volumes of 2,500 ADT or greater and other urban and community routes designated by the district in consultation with the Maintenance Division. This also includes all designated incident bypass routes.

	These routes will receive plowing and application of snow and ice control treatments on an as needed basis, throughout the storm until all lanes are restored to a near normal condition.		These routes will receive plowing and application of snow and ice control treatments on an as needed basis, throughout the storm until all lanes are restored to a near normal condition.

Smithk: /* 133.5.2 Glossary */ updated major highway system map

2021-06-04T15:28:25Z

133.5.2 Glossary: updated major highway system map

← Older revision		Revision as of 10:28, 4 June 2021
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	'''Brine.''' Water saturated with common salt (NaCl), also liquid salt or liquid chemical.		'''Brine.''' Water saturated with common salt (NaCl), also liquid salt or liquid chemical.

	'''Continuous Operations Routes.''' This system includes all [[media:144 Major Highway System.pdf\|major highways]], minor highways with traffic volumes of 2,500 ADT or greater and other urban and community routes designated by the district in consultation with the Maintenance Division. This also includes all designated incident bypass routes.		'''Continuous Operations Routes.''' This system includes all [[media:144 Major Highway System 2021.pdf\|major highways]], minor highways with traffic volumes of 2,500 ADT or greater and other urban and community routes designated by the district in consultation with the Maintenance Division. This also includes all designated incident bypass routes.

	These routes will receive plowing and application of snow and ice control treatments on an as needed basis, throughout the storm until all lanes are restored to a near normal condition.		These routes will receive plowing and application of snow and ice control treatments on an as needed basis, throughout the storm until all lanes are restored to a near normal condition.

Smithk: Updated Major Highway System map

2019-04-26T13:54:21Z

Updated Major Highway System map

← Older revision		Revision as of 08:54, 26 April 2019
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	'''Brine.''' Water saturated with common salt (NaCl), also liquid salt or liquid chemical.		'''Brine.''' Water saturated with common salt (NaCl), also liquid salt or liquid chemical.

	'''Continuous Operations Routes.''' This system includes all [~~http~~:~~//sharepoint/systemdelivery/TP/sysanlysis/dmas/Shared%20Documents/Maps/MajorHighwaySystem2015~~.pdf major highways], minor highways with traffic volumes of 2,500 ADT or greater and other urban and community routes designated by the district in consultation with the Maintenance Division. This also includes all designated incident bypass routes.		'''Continuous Operations Routes.''' This system includes all [[media:144 Major Highway System.pdf\|major highways]], minor highways with traffic volumes of 2,500 ADT or greater and other urban and community routes designated by the district in consultation with the Maintenance Division. This also includes all designated incident bypass routes.

	These routes will receive plowing and application of snow and ice control treatments on an as needed basis, throughout the storm until all lanes are restored to a near normal condition.		These routes will receive plowing and application of snow and ice control treatments on an as needed basis, throughout the storm until all lanes are restored to a near normal condition.

Smithk: /* Table 133.5.3.6.5 Type 1 Winter Event: More than 12 inches of snow in 24 hours OR more than ¾ inch of ice */

2018-11-16T21:19:41Z

Table 133.5.3.6.5 Type 1 Winter Event: More than 12 inches of snow in 24 hours OR more than ¾ inch of ice

← Older revision		Revision as of 16:19, 16 November 2018
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	'''2)''' Treat slick patches if needed with pre-wetted salt at 100 lb/lane-mi or with brine at 44 gal/ln-mi; plow if needed.		'''2)''' Treat slick patches if needed with pre-wetted salt at 100 lb/lane-mi or with brine at 44 gal/ln-mi; plow if needed.
	\|-		\|-
	\| rowspan="2"\|'''Above 32º F,''' 32º F or below is imminent; ''ALSO'' '''30 to 32º F,''' remaining in range\|\|Dry\|\|Apply brine or pre-wetted solid salt\|\| align="center"\|100\|\| align="center"\|44\|\|rowspan="2"\|Plow accumulation and reapply brine or solid salt as needed\|\| align="center" rowspan="2"\|100\|\| align="center" rowspan="2"\|44\|\|rowspan="2" \| '''1)''' If the desired plowing/treatment frequency cannot be maintained, the spread rate can be increased to 200 lb/lane-mi to accommodate longer operational cycles.		\| rowspan="2"\|'''Above 32º F,''' 32º F or below is imminent; ''ALSO'' '''30º to 32º F,''' remaining in range\|\|Dry\|\|Apply brine or pre-wetted solid salt\|\| align="center"\|100\|\| align="center"\|44\|\|rowspan="2"\|Plow accumulation and reapply brine or solid salt as needed\|\| align="center" rowspan="2"\|100\|\| align="center" rowspan="2"\|44\|\|rowspan="2" \| '''1)''' If the desired plowing/treatment frequency cannot be maintained, the spread rate can be increased to 200 lb/lane-mi to accommodate longer operational cycles.
	'''2)''' Do not apply brine onto heavy snow accumulation or packed snow.		'''2)''' Do not apply brine onto heavy snow accumulation or packed snow.
	\|-		\|-

Smithk: /* Table 133.5.3.6.4 Type 2 Winter Event: 6 – 12 in. of snow in 24 hours OR ½ to ¾ in. of ice */

2018-11-16T21:19:15Z

Table 133.5.3.6.4 Type 2 Winter Event: 6 – 12 in. of snow in 24 hours OR ½ to ¾ in. of ice

← Older revision		Revision as of 16:19, 16 November 2018
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	'''2)''' Treat slick patches if needed with pre-wetted solid salt at 100 lb/lane-mile or with brine at 44 gal/lane-mile; plow if needed.		'''2)''' Treat slick patches if needed with pre-wetted solid salt at 100 lb/lane-mile or with brine at 44 gal/lane-mile; plow if needed.
	\|-		\|-
	\| rowspan="2"\|'''Above 32º F,''' 32º F or below is imminent; ''ALSO'' '''30 to 32º F,''' remaining in range\|\|Dry\|\|Apply brine or pre-wetted solid salt\|\| align="center"\|100\|\| align="center"\|44\|\| rowspan="2"\|Plow accumulation and reapply brine or solid salt as needed\|\| rowspan="2" align="center"\|100\|\| rowspan="2" align="center"\| 44\|\|rowspan="2"\|''' 1)''' If the desired plowing/treatment frequency cannot be maintained, the spread rate can be increased to 200 lb/lane-mile to accommodate longer operational cycles.		\| rowspan="2"\|'''Above 32º F,''' 32º F or below is imminent; ''ALSO'' '''30º to 32º F,''' remaining in range\|\|Dry\|\|Apply brine or pre-wetted solid salt\|\| align="center"\|100\|\| align="center"\|44\|\| rowspan="2"\|Plow accumulation and reapply brine or solid salt as needed\|\| rowspan="2" align="center"\|100\|\| rowspan="2" align="center"\| 44\|\|rowspan="2"\|''' 1)''' If the desired plowing/treatment frequency cannot be maintained, the spread rate can be increased to 200 lb/lane-mile to accommodate longer operational cycles.
	'''2)''' Do not apply brine onto heavy snow accumulation or packed snow.		'''2)''' Do not apply brine onto heavy snow accumulation or packed snow.
	\|-		\|-

Smithk: /* Table 133.5.3.6.3 Type 3 Winter Event: 1 – 6 in. of snow/frozen precipitation in 24 hours OR a trace to 1/2 in. of ice */

2018-11-16T21:18:49Z

Table 133.5.3.6.3 Type 3 Winter Event: 1 – 6 in. of snow/frozen precipitation in 24 hours OR a trace to 1/2 in. of ice

← Older revision		Revision as of 16:18, 16 November 2018
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	'''2)''' Treat slick patches if needed with pre-wetted salt at 100 lb/lane-mile or brine 44 gal/lane-mile; plow if needed.		'''2)''' Treat slick patches if needed with pre-wetted salt at 100 lb/lane-mile or brine 44 gal/lane-mile; plow if needed.
	\|-		\|-
	\| rowspan="2"\|'''Above 32º F,''' 32º F or below is imminent; ''ALSO'' '''20 to 32º F,''' remaining in range\|\| Dry\|\|Apply brine or pre-wetted salt\|\| align="center"\| 100\|\| align="center"\| 44\|\| rowspan="2"\|Plow as needed, reapply brine or pre-wetted solid salt when needed\|\| rowspan="2" align="center"\|100\|\| rowspan="2" align="center"\| 200 \|\| rowspan="2" align="center"\|44\|\| rowspan="2" align="center"\|88\|\| rowspan="2" \|'''1)''' Applications will need to be more frequent at lower temperatures and higher snowfall rates.		\| rowspan="2"\|'''Above 32º F,''' 32º F or below is imminent; ''ALSO'' '''20º to 32º F,''' remaining in range\|\| Dry\|\|Apply brine or pre-wetted salt\|\| align="center"\| 100\|\| align="center"\| 44\|\| rowspan="2"\|Plow as needed, reapply brine or pre-wetted solid salt when needed\|\| rowspan="2" align="center"\|100\|\| rowspan="2" align="center"\| 200 \|\| rowspan="2" align="center"\|44\|\| rowspan="2" align="center"\|88\|\| rowspan="2" \|'''1)''' Applications will need to be more frequent at lower temperatures and higher snowfall rates.
	'''2)''' Do not apply brine onto heavy snow accumulation or packed snow.		'''2)''' Do not apply brine onto heavy snow accumulation or packed snow.
	'''3)''' After heavier snow periods and during light snowfall, reduce salt rate to 100 lb./lane-mile or 44 gal./lane-mile brine; continue to plow and apply salt as needed		'''3)''' After heavier snow periods and during light snowfall, reduce salt rate to 100 lb./lane-mile or 44 gal./lane-mile brine; continue to plow and apply salt as needed

← Older revision		Revision as of 10:36, 16 July 2026
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	==133.5.1 Operations Guide for Maintenance Field Personnel==		==133.5.1 Operations Guide for Maintenance Field Personnel==

	This is a guide to highway anti-icing operations for Maintenance field personnel. Its purpose is to recommend maintenance actions for ''preventing'' the formation or development of packed and bonded snow or bonded ice on the '''continuous operations routes''' during a variety of winter weather events. It is intended to complement the decision-making and management practices of a systematic anti-icing program so that '''continuous operations routes''' can be efficiently maintained in the best possible condition.		This is a guide to highway anti-icing operations for Maintenance field personnel. Its purpose is to recommend maintenance actions for ''preventing'' the formation or development of packed and bonded snow or bonded ice on the '''continuous operations routes''' during a variety of winter weather events. It is intended to complement the decision-making and management practices of a systematic anti-icing program so that '''continuous operations routes''' can be efficiently maintained in the best possible condition.

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	[[133.5 Operator’s Guide for Anti-Icing#133.5.3.6 Tables for Continuous Operations Routes\|Guidance for anti-icing operations during five winter weather events]] is available. The five events are:		[[133.5 Operator’s Guide for Anti-Icing#133.5.3.6 Tables for Continuous Operations Routes\|Guidance for anti-icing operations during five winter weather events]] is available. The five events are:

	:* Type 5 Winter Event: Frost, flurries, freezing fog, blowing snow & refreeze		* Type 5 Winter Event: Frost, flurries, freezing fog, blowing snow & refreeze
	:* Type 4 Winter Event: Dusting to 1 in. of snow, sleet or other frozen precipitation		* Type 4 Winter Event: Dusting to 1 in. of snow, sleet or other frozen precipitation
	:* Type 3 Winter Event: 1 – 6 in. of snow/frozen precipitation in 24 hours OR a trace to ½ in. of ice		* Type 3 Winter Event: 1 – 6 in. of snow/frozen precipitation in 24 hours OR a trace to ½ in. of ice
	:* Type 2 Winter Event: 6 – 12 in. of snow in 24 hours OR ½ to ¾ in. of ice		* Type 2 Winter Event: 6 – 12 in. of snow in 24 hours OR ½ to ¾ in. of ice
	:* Type 1 Winter Event: More than 12 in. of snow in 24 hours OR more than ¾ in. of ice		* Type 1 Winter Event: More than 12 in. of snow in 24 hours OR more than ¾ in. of ice

	~~{\|style="padding: 0.3em; margin-left:15px; border:2px solid #a9a9a9; text-align:center; font-size: 95%; background:#f5f5f5" width="300px" align="right"~~
	\|-
	~~\|'''Related Information'''~~
	\|-
	\|[http://wwwi.dot.missouri/intranet/hr/hred/documents/MoDOTSnowAcademyparticipantbook.pdf MoDOT Snow Academy Official Guide, Participant's Manual] and [http://wwwi.dot.missouri/intranet/hr/hred/roadeo.htm Snow Academy Website]
	\|}

	The tables suggest the appropriate maintenance action to take during initial and follow-up anti-icing operations for a given precipitation or icing event. Each action is defined for a range of pavement temperatures and an associated temperature trend. For some events the operation is dependent not only on the pavement temperature and trend, but also upon the pavement surface or the traffic condition at the time of the action. Many of the maintenance actions involve the application of salt in either a dry solid, pre-wetted or brine (liquid) form. Pre-wetted solid and brine are the two primary forms on which we need to concentrate. Application rates are given for each form where appropriate. '''These are suggested rates and should be adjusted, if necessary, to achieve the effectiveness for local conditions.'''		The tables suggest the appropriate maintenance action to take during initial and follow-up anti-icing operations for a given precipitation or icing event. Each action is defined for a range of pavement temperatures and an associated temperature trend. For some events the operation is dependent not only on the pavement temperature and trend, but also upon the pavement surface or the traffic condition at the time of the action. Many of the maintenance actions involve the application of salt in either a dry solid, pre-wetted or brine (liquid) form. Pre-wetted solid and brine are the two primary forms on which we need to concentrate. Application rates are given for each form where appropriate. '''These are suggested rates and should be adjusted, if necessary, to achieve the effectiveness for local conditions.'''
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	Comments and notes are given in each table where appropriate to further guide field maintenance personnel for their anti-icing operations.		Comments and notes are given in each table where appropriate to further guide field maintenance personnel for their anti-icing operations.

	~~==133.5.2 Glossary==~~		{\| class="wikitable" style="margin: auto; text-align: left;" align="left"
	{\|style="~~padding: 0.3em;~~ margin~~-left~~:~~15px; border:3px solid #a9a9a9~~; text-align:left; ~~font-size: 95%; background:#f5f5f5" width="250px~~" align="~~right~~"
	\|-		\|-
	~~\|align=''center''\|'''~~Tables~~'''\|~~\|~~align=''center'' style="background:#FFFFCC"~~\| ~~'''~~Printable pdf ~~files'''~~		! Tables \|\| Printable pdf Files
	\|-		\|-
	\|[[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.1 How to Use Liquid Anti-Icers \| How to Use Liquid Anti-Icers]]\|\|~~style="background:#FFFFCC"\|~~[[media: Table 133.5.3.1 How to Use Liquid Anti-Icers.pdf \| How to Use Liquid Anti-Icers]]		\| ● [[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.1 How to Use Liquid Anti-Icers \| How to Use Liquid Anti-Icers]] \|\| ● [[media: Table 133.5.3.1 How to Use Liquid Anti-Icers.pdf \| How to Use Liquid Anti-Icers]]
	\|-		\|-
	\|[[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.2 Equivalent Salt Spread Rates\|Equivalent Salt Spread Rates]] \|\|~~style="background:#FFFFCC"\|~~[[media: Table 133.5.3.2 Equivalent Salt Spread Rates.pdf\|Equivalent Salt Spread Rates]]		\| ● [[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.2 Equivalent Salt Spread Rates\|Equivalent Salt Spread Rates]] \|\| ● [[media: Table 133.5.3.2 Equivalent Salt Spread Rates.pdf\|Equivalent Salt Spread Rates]]
	\|-		\|-
	\|[[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.3 Pure salt concentration and corresponding specific gravity (measured by a hydrometer) at 59º F \|Pure salt concentration and corresponding specific gravity (measured by a hydrometer) at 59º F]] \|\|~~style="background:#FFFFCC"\|~~[[media: Table 133.5.3.3 Pure salt concentration and corresponding specific gravity (measured by a hydrometer) at 59º F.pdf \|Pure salt concentration and corresponding specific gravity (measured by a hydrometer) at 59º F]]		\| ● [[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.3 Pure salt concentration and corresponding specific gravity (measured by a hydrometer) at 59º F \|Pure salt concentration and corresponding specific gravity (measured by a hydrometer) at 59º F]] \|\| ● [[media: Table 133.5.3.3 Pure salt concentration and corresponding specific gravity (measured by a hydrometer) at 59º F.pdf \|Pure salt concentration and corresponding specific gravity (measured by a hydrometer) at 59º F]]
	\|-		\|-
	\|[[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.4 Gradation of salt specified by ASTM D 632 & MoDOT\|Gradation of salt specified by ASTM D 632 and MoDOT]] \|\|~~style="background:#FFFFCC"\|~~[[media: Table 133.5.3.4 Gradation of salt specified by ASTM D 632 and MoDOT.pdf\|Gradation of salt specified by ASTM D 632 and MoDOT]]		\| ● [[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.4 Gradation of salt specified by ASTM D 632 & MoDOT\|Gradation of salt specified by ASTM D 632 and MoDOT]] \|\| ● [[media: Table 133.5.3.4 Gradation of salt specified by ASTM D 632 and MoDOT.pdf\|Gradation of salt specified by ASTM D 632 and MoDOT]]
	\|-		\|-
	\|[[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.5 Proportions for preparing sodium chloride solution from commercial grade salt (i.e., up to 5 percent impurities)\|Proportions for preparing sodium chloride solution from commercial grade salt (i.e., up to 5 percent impurities)]] \|\|~~style="background:#FFFFCC"\|~~[[media: Table 133.5.3.5 Proportions for preparing sodium chloride solution from commercial grade salt.pdf\|Proportions for preparing sodium chloride solution from commercial grade salt (i.e., up to 5 percent impurities)]]		\| ● [[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.5 Proportions for preparing sodium chloride solution from commercial grade salt (i.e., up to 5 percent impurities)\|Proportions for preparing sodium chloride solution from commercial grade salt (i.e., up to 5 percent impurities)]] \|\| ● [[media: Table 133.5.3.5 Proportions for preparing sodium chloride solution from commercial grade salt.pdf\|Proportions for preparing sodium chloride solution from commercial grade salt (i.e., up to 5 percent impurities)]]
	\|-		\|-
	\|[[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.6.1 Type 5 Winter Event: Frost, Flurries, Freezing Fog, Blowing Snow and Refreeze\|Type 5 Winter Event: Frost, Flurries, Freezing Fog, Blowing Snow and Refreeze]] \|\|~~style="background:#FFFFCC"\|~~[[media: Table 133.5.3.6.1 Type 5.doc\|Type 5 Winter Event]]		\| ● [[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.6.1 Type 5 Winter Event: Frost, Flurries, Freezing Fog, Blowing Snow and Refreeze\|Type 5 Winter Event: Frost, Flurries, Freezing Fog, Blowing Snow and Refreeze]] \|\| ● [[media: Table 133.5.3.6.1 Type 5.doc\|Type 5 Winter Event]]
	\|-		\|-
	\|[[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.6.2 Type 4 Winter Event: Dusting to 1 in. of snow, sleet, or other frozen precipitation\|Type 4 Winter Event: Dusting to 1 in. of snow, sleet, or other frozen precipitation]] \|\|~~style="background:#FFFFCC"\|~~[[media: Table 133.5.3.6.2 Type 4.doc\|Type 4 Winter Event]]		\| ● [[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.6.2 Type 4 Winter Event: Dusting to 1 in. of snow, sleet, or other frozen precipitation\|Type 4 Winter Event: Dusting to 1 in. of snow, sleet, or other frozen precipitation]] \|\| ● [[media: Table 133.5.3.6.2 Type 4.doc\|Type 4 Winter Event]]
	\|-		\|-
	\|[[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.6.3 Type 3 Winter Event: 1 – 6 in. of snow/frozen precipitation in 24 hours OR a trace to 1/2 in. of ice\|Type 3 Winter Event: 1 – 6 in. of snow/frozen precipitation in 24 hours OR a trace to 1/2 in. of ice ]] \|\|~~style="background:#FFFFCC"\|~~[[media: Table 133.5.3.6.3 Type 3.doc\|Type 3 Winter Event]]		\| ● [[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.6.3 Type 3 Winter Event: 1 – 6 in. of snow/frozen precipitation in 24 hours OR a trace to 1/2 in. of ice\|Type 3 Winter Event: 1 – 6 in. of snow/frozen precipitation in 24 hours OR a trace to 1/2 in. of ice ]] \|\| ● [[media: Table 133.5.3.6.3 Type 3.doc\|Type 3 Winter Event]]
	\|-		\|-
	\|[[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.6.4 Type 2 Winter Event: 6 – 12 in. of snow in 24 hours OR ½ to ¾ in. of ice\|Type 2 Winter Event: 6 – 12 in. of snow in 24 hours OR ½ to ¾ in. of ice]] \|\|~~style="background:#FFFFCC"\|~~[[media: Table 133.5.3.6.4 Type 2.doc\|Type 2 Winter Event]]		\| ● [[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.6.4 Type 2 Winter Event: 6 – 12 in. of snow in 24 hours OR ½ to ¾ in. of ice\|Type 2 Winter Event: 6 – 12 in. of snow in 24 hours OR ½ to ¾ in. of ice]] \|\| ● [[media: Table 133.5.3.6.4 Type 2.doc\|Type 2 Winter Event]]
	\|-		\|-
	\|[[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.6.5 Type 1 Winter Event: More than 12 inches of snow in 24 hours OR more than ¾ inch of ice\|Type 1 Winter Event: More than 12 inches of snow in 24 hours OR more than ¾ inch of ice]] \|\|~~style="background:#FFFFCC"\|~~[[media:Table 133.5.3.6.5 Type 1.doc\|Type 1 Winter Event]]		\| ● [[133.5 Operator’s Guide for Anti-Icing#Table 133.5.3.6.5 Type 1 Winter Event: More than 12 inches of snow in 24 hours OR more than ¾ inch of ice\|Type 1 Winter Event: More than 12 inches of snow in 24 hours OR more than ¾ inch of ice]] \|\| ● [[media:Table 133.5.3.6.5 Type 1.doc\|Type 1 Winter Event]]
	\|}		\|}

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			==133.5.2 Glossary==
	[[image:133.5.2.jpg\|right\|225px\|thumb\|<center>'''Preparing for winter weather in Butler County'''</center>]]		[[image:133.5.2.jpg\|right\|225px\|thumb\|<center>'''Preparing for winter weather in Butler County'''</center>]]

	'''Black ice.''' Popular term for a very thin coating of clear, bubble-free, homogenous ice which forms on a pavement with a temperature at or slightly above 32º F when the temperature of the air in contact with the ground is below the freezing-point of water and small slightly supercooled water droplets deposit on the surface and coalesce (flow together) before freezing.		'''Black ice.''' Popular term for a very thin coating of clear, bubble-free, homogenous ice which forms on a pavement with a temperature at or slightly above 32º F when the temperature of the air in contact with the ground is below the freezing-point of water and small slightly supercooled water droplets deposit on the surface and coalesce (flow together) before freezing.

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	==133.5.3 Tables==		==133.5.3 Tables==
			===Table 133.5.3.1 How to Use Liquid Anti-Icers===
	===~~<center>~~Table 133.5.3.1 How to Use Liquid Anti-Icers~~</center>~~ ===

	{\| border="1" class="wikitable" style="text-align:center" align="center"		{\| border="1" class="wikitable" style="text-align:center" align="center"
	\|+ ''Pounds of Ice Melted per Pound of Salt''		\|+ ''Pounds of Ice Melted per Pound of Salt''