133.1 Materials for Snow and Ice Control - Revision history

Smithk: /* 133.1.3 Salt Prefill */ added photo

2013-08-20T14:43:44Z

133.1.3 Salt Prefill: added photo

← Older revision		Revision as of 09:43, 20 August 2013
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	==133.1.3 Salt Prefill==		==133.1.3 Salt Prefill==
			[[image:133.1.3.jpg\|right\|250px]]
	All salt shall be ordered far enough in advance to ensure that by November 1st each district has stored the appropriate amount of salt to meet their normal winter needs as determined in consultation with the Maintenance Division. This should be no more than a district’s ten-year average annual usage.		All salt shall be ordered far enough in advance to ensure that by November 1st each district has stored the appropriate amount of salt to meet their normal winter needs as determined in consultation with the Maintenance Division. This should be no more than a district’s ten-year average annual usage.

Smithk: Per Maintenance, new Practical Operations guidance

2011-01-04T16:39:47Z

Per Maintenance, new Practical Operations guidance

← Older revision		Revision as of 11:39, 4 January 2011
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	==133.1.3 Salt Prefill==		==133.1.3 Salt Prefill==

	All salt shall be ordered far enough in advance to ensure that by November 1st , each ~~maintenance lot is storing~~ salt ~~at full capacity~~.		All salt shall be ordered far enough in advance to ensure that by November 1st each district has stored the appropriate amount of salt to meet their normal winter needs as determined in consultation with the Maintenance Division. This should be no more than a district’s ten-year average annual usage.

	:Reasons for policy: ~~Assures storage is at capacity~~ at the ~~start~~ of winter season~~, reduces re-supply problem and maintains MoDOT supplier relations~~.		:Reasons for policy: To manage salt inventory levels at the beginning of each winter season to ensure enough salt is in storage for an average winter.

	::Effective Date: 6/1/99		::Effective Date: 6/1/99
	::Revision Dates: 6/17/03		::Revision Dates: 6/17/03, 9/01/10

	==133.1.4 Salt Replenishment==		==133.1.4 Salt Replenishment==
	Districts ~~shall~~ re-order salt ~~as needed under terms of~~ the ~~current contract~~. If suppliers are no longer able to meet statewide orders, the State Maintenance Engineer will coordinate orders to ensure each district's critical needs are met.		Replenishment order estimates will be limited to no more than 20% of a district’s ten-year average annual usage. Actual replenishment orders will vary depending upon the severity of the winter. Districts will determine where replenishment deliveries are to take place. Districts may re-order salt when salt on hand in the district does not meet anticipated remaining winter needs. If suppliers are no longer able to meet statewide orders, the State Maintenance Engineer will coordinate orders to ensure each district's critical needs are met. Replenishment contracts cannot be used to pre-fill for future winter seasons. For additional information, refer to [[133.1 Materials for Snow and Ice Control#133.1.7 Liquidated Damages\|EPG 133.1.7 Liquidated Damages]].
	For additional information, refer to [[133.1 Materials for Snow and Ice Control#133.1.7 Liquidated Damages\|EPG 133.1.7 Liquidated Damages]].

	:Reasons for policy: Centralizes reserve salt storage, minimizes weather effects on stored salt, increases salt storage capacity and lowers the cost for salt storage		:Reasons for policy: To manage salt inventory levels during the winter season. Centralizes reserve salt storage, minimizes weather effects on stored salt, increases salt storage capacity and lowers the cost for salt storage

	::Effective Date: 6/1/99		::Effective Date: 6/1/99
	::Revision Dates: 6/17/03		::Revision Dates: 6/17/03, 9/01/10

	==133.1.5 Large Storage Facilities==		==133.1.5 Large Storage Facilities==

Smithk: minor clarifications to differentiate EPG articles (that are referenced as "articles", not "sections") from specifications (that are referenced as "sections")

2010-04-01T13:29:25Z

minor clarifications to differentiate EPG articles (that are referenced as "articles", not "sections") from specifications (that are referenced as "sections")

← Older revision		Revision as of 08:29, 1 April 2010
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	==133.1.2 Storage==		==133.1.2 Storage==
	Chemicals and stockpiles of treated abrasives are to be stored in a manner to prevent loss of material and prevent damage to state or private property. All bulk salt shall be stored inside covered storage structures. Asphalt pads are to be constructed under and in front of all storage facilities. Mixed materials shall be covered when not in use and between storm events. For additional information, refer to [[127.25 Maintenance Environmental Policies#127.25.8.8.1 Salt Run-off\|127.25.8.8.1 Salt Run-off]].		Chemicals and stockpiles of treated abrasives are to be stored in a manner to prevent loss of material and prevent damage to state or private property. All bulk salt shall be stored inside covered storage structures. Asphalt pads are to be constructed under and in front of all storage facilities. Mixed materials shall be covered when not in use and between storm events. For additional information, refer to [[127.25 Maintenance Environmental Policies#127.25.8.8.1 Salt Run-off\|EPG 127.25.8.8.1 Salt Run-off]].

	:Reason for policy: Prevents loss of material and damage to private property. Most salt runoff damage comes from mixed piles.		:Reason for policy: Prevents loss of material and damage to private property. Most salt runoff damage comes from mixed piles.
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	==133.1.4 Salt Replenishment==		==133.1.4 Salt Replenishment==
	Districts shall re-order salt as needed under terms of the current contract. If suppliers are no longer able to meet statewide orders, the State Maintenance Engineer will coordinate orders to ensure each district's critical needs are met.		Districts shall re-order salt as needed under terms of the current contract. If suppliers are no longer able to meet statewide orders, the State Maintenance Engineer will coordinate orders to ensure each district's critical needs are met.
	For additional information, refer to [[133.1 Materials for Snow and Ice Control#133.1.7 Liquidated Damages\|133.1.7 Liquidated Damages]].		For additional information, refer to [[133.1 Materials for Snow and Ice Control#133.1.7 Liquidated Damages\|EPG 133.1.7 Liquidated Damages]].

	:Reasons for policy: Centralizes reserve salt storage, minimizes weather effects on stored salt, increases salt storage capacity and lowers the cost for salt storage		:Reasons for policy: Centralizes reserve salt storage, minimizes weather effects on stored salt, increases salt storage capacity and lowers the cost for salt storage
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	==133.1.6 Abrasives==		==133.1.6 Abrasives==
	The maximum aggregate size for abrasives shall not exceed 3/8 in. Lead mining chat (within established limits) may be used for general maintenance purposes. See ''Missouri Standard Specifications for Highway Construction'' for established lead limits in mining by-product aggregates. For more information, refer to [[127.25 Maintenance Environmental Policies#127.25.8.2 Lead Mining Chat\|127.25.8.2.1 Abrasives]].		The maximum aggregate size for abrasives shall not exceed 3/8 in. Lead mining chat (within established limits) may be used for general maintenance purposes. See ''Missouri Standard Specifications for Highway Construction'' for established lead limits in mining by-product aggregates. For more information, refer to [[127.25 Maintenance Environmental Policies#127.25.8.2 Lead Mining Chat\|EPG 127.25.8.2.1 Abrasives]].

	:Reasons for policy: Experience has shown that an aggregate size larger than 3/8 in. is ineffective and contributes to broken windshields; mining tailings may contain environmentally unsafe materials.		:Reasons for policy: Experience has shown that an aggregate size larger than 3/8 in. is ineffective and contributes to broken windshields; mining tailings may contain environmentally unsafe materials.

Smithk: /* 133.1.7 Liquidated Damages */

2010-02-17T20:33:33Z

133.1.7 Liquidated Damages

← Older revision		Revision as of 15:33, 17 February 2010
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	:Reasons for policy: To follow terms of each purchasing contract.		:Reasons for policy: To follow terms of each purchasing contract.

			::Effective date: 6/1/99

	==133.1.8 Pre-wetting==		==133.1.8 Pre-wetting==

Smithk: /* 133.1.7 Liquidated Damages */Clarification, per Maintenance and the Incident Response Priority Team

2010-02-17T20:32:25Z

133.1.7 Liquidated Damages: Clarification, per Maintenance and the Incident Response Priority Team

← Older revision		Revision as of 15:32, 17 February 2010
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	==133.1.7 Liquidated Damages==		==133.1.7 Liquidated Damages==
	~~Approval must~~ be ~~received from the State Maintenance Engineer before~~ liquidated damages ~~can be waived. Refer~~ to ~~[[133.1 Materials for Snow and Ice Control#133.1.4 Salt Replenishment\|133.1.4 Salt Replenishment]]~~.		Late deliveries of snow and ice removal materials may be assessed liquidated damages at the discretion of the district engineer or the engineer's representative, according to the terms of each purchasing contract.

	:Reasons for policy: ~~All suppliers must be treated the same; contracts are legal documents to be fulfilled by both parties; unfair treatment can result in loss~~ of ~~qualified bidders~~.		:Reasons for policy: To follow terms of each purchasing contract.

	~~::Effective Date: 6/1/99~~
	~~::Revision Dates: 6/17/03~~

	==133.1.8 Pre-wetting==		==133.1.8 Pre-wetting==

Smithk: /* 133.1.6 Abrasives */ article construction

2008-08-06T18:16:38Z

133.1.6 Abrasives: article construction

← Older revision		Revision as of 13:16, 6 August 2008
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	==133.1.6 Abrasives==		==133.1.6 Abrasives==
	The maximum aggregate size for abrasives shall not exceed 3/8 in. Lead mining chat (within established limits) may be used for general maintenance purposes. See ''Missouri Standard Specifications for Highway Construction'' for established lead limits in mining by-product aggregates. For more information, refer to [[127.25 Maintenance Environmental Policies#127.25.8.2 Lead Mining Chat\|~~Lead Mining Chat~~]].		The maximum aggregate size for abrasives shall not exceed 3/8 in. Lead mining chat (within established limits) may be used for general maintenance purposes. See ''Missouri Standard Specifications for Highway Construction'' for established lead limits in mining by-product aggregates. For more information, refer to [[127.25 Maintenance Environmental Policies#127.25.8.2 Lead Mining Chat\|127.25.8.2.1 Abrasives]].

	:Reasons for policy: Experience has shown that an aggregate size larger than 3/8 in. is ineffective and contributes to broken windshields; mining tailings may contain environmentally unsafe materials.		:Reasons for policy: Experience has shown that an aggregate size larger than 3/8 in. is ineffective and contributes to broken windshields; mining tailings may contain environmentally unsafe materials.

Smithk: article construction

2008-08-06T18:15:23Z

article construction

← Older revision		Revision as of 13:15, 6 August 2008
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	==133.1.2 Storage==		==133.1.2 Storage==
	Chemicals and stockpiles of treated abrasives are to be stored in a manner to prevent loss of material and prevent damage to state or private property. All bulk salt shall be stored inside covered storage structures. Asphalt pads are to be constructed under and in front of all storage facilities. Mixed materials shall be covered when not in use and between storm events. For additional information, refer to [[127.25 Maintenance Environmental Policies#127.25.8.8.1 Salt Run-off\|Salt Run-off]].		Chemicals and stockpiles of treated abrasives are to be stored in a manner to prevent loss of material and prevent damage to state or private property. All bulk salt shall be stored inside covered storage structures. Asphalt pads are to be constructed under and in front of all storage facilities. Mixed materials shall be covered when not in use and between storm events. For additional information, refer to [[127.25 Maintenance Environmental Policies#127.25.8.8.1 Salt Run-off\|127.25.8.8.1 Salt Run-off]].

	:Reason for policy: Prevents loss of material and damage to private property. Most salt runoff damage comes from mixed piles.		:Reason for policy: Prevents loss of material and damage to private property. Most salt runoff damage comes from mixed piles.

Smithk: article construction

2008-08-06T18:14:52Z

article construction

← Older revision		Revision as of 13:14, 6 August 2008
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	==133.1.2 Storage==		==133.1.2 Storage==
	Chemicals and stockpiles of treated abrasives are to be stored in a manner to prevent loss of material and prevent damage to state or private property. All bulk salt shall be stored inside covered storage structures. Asphalt pads are to be constructed under and in front of all storage facilities. Mixed materials shall be covered when not in use and between storm events. For additional information, refer to [[127.25 Maintenance Environmental Policies#127.25.8.8 Salt Run-off\|Salt Run-off]].		Chemicals and stockpiles of treated abrasives are to be stored in a manner to prevent loss of material and prevent damage to state or private property. All bulk salt shall be stored inside covered storage structures. Asphalt pads are to be constructed under and in front of all storage facilities. Mixed materials shall be covered when not in use and between storm events. For additional information, refer to [[127.25 Maintenance Environmental Policies#127.25.8.8.1 Salt Run-off\|Salt Run-off]].

	:Reason for policy: Prevents loss of material and damage to private property. Most salt runoff damage comes from mixed piles.		:Reason for policy: Prevents loss of material and damage to private property. Most salt runoff damage comes from mixed piles.

Smithk: article construction

2008-03-07T19:45:42Z

article construction

New page

[[image:133.1.jpg|right|500px]]

==133.1.1 Liquid Chemical==
Brine, for both pre-treatment and pre-wetting, is to be made using rock salt ([[:Category:1124 Sodium Chloride|sodium chloride]]). Liquid [[:Category:1110 Calcium Chloride|Calcium Chloride]] may be used in extremely cold temperatures when brine is less effective.

:Reasons for policy: Sodium chloride is as effective as calcium chloride at temperatures above 20° F and is less expensive.

:: Effective Date: 6/1/99
::Revision Dates: 6/17/03

==133.1.2 Storage==
Chemicals and stockpiles of treated abrasives are to be stored in a manner to prevent loss of material and prevent damage to state or private property. All bulk salt shall be stored inside covered storage structures. Asphalt pads are to be constructed under and in front of all storage facilities. Mixed materials shall be covered when not in use and between storm events. For additional information, refer to [[127.25 Maintenance Environmental Policies#127.25.8.8 Salt Run-off|Salt Run-off]].

:Reason for policy: Prevents loss of material and damage to private property. Most salt runoff damage comes from mixed piles.

::Effective Date: 6/1/99
::Revision Dates: 6/17/03

==133.1.3 Salt Prefill==

All salt shall be ordered far enough in advance to ensure that by November 1st , each maintenance lot is storing salt at full capacity.

:Reasons for policy: Assures storage is at capacity at the start of winter season, reduces re-supply problem and maintains MoDOT supplier relations.

::Effective Date: 6/1/99
::Revision Dates: 6/17/03

==133.1.4 Salt Replenishment==
Districts shall re-order salt as needed under terms of the current contract. If suppliers are no longer able to meet statewide orders, the State Maintenance Engineer will coordinate orders to ensure each district's critical needs are met.
For additional information, refer to [[133.1 Materials for Snow and Ice Control#133.1.7 Liquidated Damages|133.1.7 Liquidated Damages]].

:Reasons for policy: Centralizes reserve salt storage, minimizes weather effects on stored salt, increases salt storage capacity and lowers the cost for salt storage

::Effective Date: 6/1/99
::Revision Dates: 6/17/03

==133.1.5 Large Storage Facilities==
Storage facilities of 2000 tons or greater capacity shall act as centralized locations for salt, to re-supply buildings in multi-county areas which may include buildings in other districts.

:Reasons for policy: Centralizes reserve salt storage, minimizes weather effects on stored salt, increases salt storage capacity and lowers the cost for salt storage

::Effective Date: 6/1/99
::Revision Dates: 6/17/03

==133.1.6 Abrasives==
The maximum aggregate size for abrasives shall not exceed 3/8 in. Lead mining chat (within established limits) may be used for general maintenance purposes. See ''Missouri Standard Specifications for Highway Construction'' for established lead limits in mining by-product aggregates. For more information, refer to [[127.25 Maintenance Environmental Policies#127.25.8.2 Lead Mining Chat|Lead Mining Chat]].

:Reasons for policy: Experience has shown that an aggregate size larger than 3/8 in. is ineffective and contributes to broken windshields; mining tailings may contain environmentally unsafe materials.

::Effective Date: 6/1/99
::Revision Dates: 6/17/03

==133.1.7 Liquidated Damages==
Approval must be received from the State Maintenance Engineer before liquidated damages can be waived. Refer to [[133.1 Materials for Snow and Ice Control#133.1.4 Salt Replenishment|133.1.4 Salt Replenishment]].

:Reasons for policy: All suppliers must be treated the same; contracts are legal documents to be fulfilled by both parties; unfair treatment can result in loss of qualified bidders.

::Effective Date: 6/1/99
::Revision Dates: 6/17/03

==133.1.8 Pre-wetting==
Salt and mixed materials shall be pre-wetted with an approved liquid chemical.

:Reasons for policy: Pre-wetting will allow these materials to act on the snow pack or ice more quickly and in the case of abrasives, will enable them to imbed in the snow or ice pack; reduces the bounce and scatter of materials.

::Effective Date: 6/1/99
::Revision Dates: 6/17/03

[[Category:133 Snow and Ice Control]]