Item B - Ice and Snow Policy - Laserfiche WebLink

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Table 6. Weather Event: SLEETSTORM Calcium Magnesium Acetate 25% Magnesium Chloride 27% Pre-wet Aggregate/Magnesium Chloride ~ai~ ~ ~ct~ ~ Mainte~ ction ~ is/i Above 32 F, *Monitor pavement temperature closely steady and N/R N/R See N/R N/R See for drops towards 32 F rising comments comments *Treat icy patches if needed with pre-wet aggregate as needed for traction enhancement 32 F, N/R N/R N/R N/R Reapply *Apply pre-wet aggregate for traction as needed enhancement or below is Apply and plow imminent accumula- tion 20 to 32 F, N/R N/R Apply N/R N/R Reapply *Apply pre-wet aggregate for traction remaining in as needed enhancement range and plow accumula- tion 15 to 20 F, N/R N/R Apply N/R N/R Reapply *Apply pre-wet aggregate for traction remaining in as needed enhancement range and plow accumula- tion Reapply Below 15 F, N/R N/R Apply N/R N/R as needed *Apply pre-wet aggregate for traction steady or and plow- enhancement falling accumula- tion CHEMICAL APPLICATIONS: These application rates are starting points. Local experience should refine these recommendations. Time chemical applications to prevent deteriorating conditions or development of packed and bonded snow-. Monitor temperature and humidity to determine application timing. PLOWING: Before applying any ice control chemical, the road surfhce should be clear of as much snow- and ice as possible. CHEMICAL RATES: The recommended snow- and ice control material application rates depend on atmospheric and pavement conditions at the time of treatment and on how- these conditions are expected to change over the time period (window) between the current treatment and the next anticipated treatment.