SENSIBLE SALTING AND ALTERNATIVE DE-ICING CHEMICALS MCHENRY COUNTY DIVISION OF TRANSPORTATION

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SENSIBLE SALTING AND ALTERNATIVE DE-ICING
CHEMICALSMCHENRY COUNTY DIVISION OF
TRANSPORTATION

• R. MARK DEVRIES
• MAINTENANCE SUPERINTENDENT

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OUR GOALREDUCE CONTAMINATES IN OUR WATER
SYSTEMS WHILE MAINTAINING A SAFE TRANSPORTATION
SYSTEM
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Winter 1978-1979
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PROPER SALT STORAGE
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BENEFITS OF STORING MATERIALS UNDER COVER

• CAKING AND LUMPS
• RUN-OFF
• WEAR ON EQUIPMENT
• COVERING THE PILE
• EPA VIOLATIONS

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CONTAINING RUNOFF
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Sensible Salting
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COMPUTERIZED DISPENSING SYSTEMS
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EXCESS SALTING
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TREATED SALT
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Pre - Wetting
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Pre-Wetting

• Why do we pre-wet our salt
• It reduces scatter by as much as 30 and keeps
  the material on the road
• It instantly starts the brine making process by
  introducing moisture
• It can reduce the effective temperature of the
  salt

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PRE-WETTING CHANGES
225 GALLON PRE-WETTING UNIT
PRE-WETTING IN THE AUGER
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PRO-ACTIVE TREATMENT PRIOR TO AN EVENT
ANTI-ICING
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Bonding Prevention
IT TAKES 4 TIMES MORE SALT TO REMOVE ICE THAN
PREVENT IT!
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ANTI-ICING PICTURES
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Soon After Application
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SALT BRINE RESIDUAL
48 HOURS
24 HOURS
72 HOURS
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SUPERMIX - AFTER ONE WEEK
CARY
DEERPASS
RANDALL 50,000 ADT
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DE-ICING 1-4-07
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SIDEWALK ANTI-ICER
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ALTERNATIVE CHEMICALS

• Pacific Northwest Snow Fighters (PNS) Qualified
  Product List
• Date of Listing August 28, 2006
• Category 1 - Corrosion Inhibited Liquid Magnesium
  Chloride
• Product Name Manufacturer Corrosion Rate
  Effectiveness Concentration Date Approved
• Magnum America West 17 29 5/19/1998
• HydroMelt Cargill 23.4 30 5/10/2000
• ICEBAN 200 Earth Friendly Chem. 8.4 26 8/15/2002
  
• MeltDown - Shield LSW Envirotech Services
  Inc. 23.5 30 10/8/2002
• Caliber M1000 AP Envirotech Services
  Inc. 20.8 28 8/2/2004
• MeltDown with Shield AP Envirotech Services
  Inc. 25.9 30 8/2/2004
• MeltDown Wendover AP Envirotech Services
  Inc. 25.9 29 6/22/2005
• Hydro-Melt Green Cargill 24.3 28.5 8/1/2005
• MeltDown APEX with Shield AP Envirotech Services
  Inc. 25.1 30 1/25/2006
• FreezGard Zero - CI Plus (Requalified) North
  American Salt 12.2 30 8/28/2006
• Note-ICEBAN 200 was formely ICEBAN Performance
  Plus M
• Those products marked with an asterisk ()
  indicates that the stratification can be seen and
  agitation is required.

• Category 2 - Corrosion Inhibited Liquid Calcium
  Chloride
• Product Name Manufacturer Corrosion Rate
  Effectiveness Concentration Date Approved
• LIQUIDOW ARMOR Dow Chemical 26 30 6/25/1999
• Winter Thaw DI Tetra Technologies 16.5 32 9/13/1
  999
• CorGuard TG Tiger Calcium Services
  27.7 29 1/9/2001
• Geomelt C America West 18.6 32 6/30/2005
• Geomelt CT America West 15.5 27 6/5/2006
• Calcium Chloride with BOOST America
  West 12.6 32 6/5/2006
• Road Guard Plus Tiger Calcium Services 16 25 6/5/
  2006
• Product has been requalified.
• Those products marked with an asterisk ()
  indicates that the stratification can be seen and
  agitation is required.
• Category 3 - Non Corrosion Inhibited Liquid
  Calcium Magnesium Acetate
• Product Name Manufacturer Corrosion Rate
  Effectiveness Concentration Date Approved
• Liquid CMA 25 Cryotech -11 25 5/19/1998

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BLENDING DE-ICING LIQUIDS
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THE BLENDING SYSTEM COMBINES THE THREE CHEMICALS
IN PRECISE AMOUNTS
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SUPER MIX
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HOW DOES IT WORK?
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HOW DOES IT WORK?
PRESSURE MANIFOLD
SUCTION MANIFOLD
MIXING BOARD
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SUPER MIX PERFORMANCE
PRE WET APPLICATIONS FEBRUARY 4TH AND 5TH 2005
PAVEMENT TEMP. 2 MIX WORKING
A SUNDAY MORNING, PAVEMENT TEMP. 3 - 6 DEGREES AT
7AM
WET PAVEMENT
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• PROTECTING OUR ENVIRONMENT AND GROUNDWATER WILL
  BE A KEY ISSUE IN COMING YEARS.
• PROPER STORAGE, SENSIBLE SALTING, LIQUID USE IN
  WINTER OPERATIONS AND NON-CHLORIDE DE-ICERS
  SHOULD BE IMPLEMENTED NOW!