Item B - Ice and Snow Policy - Laserfiche WebLink

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Table 3. Weather Event: MODERATE OR HEA FT SNOWSTORM Calcium Magnesium Acetate 25% Magnesium Chloride 27% Pre-wet Aggregate/Magnesium Chloride cao Above 32 ~, DW, wet, *Monitor pavement temperature closely steady and slush, or *Treat icy patches if needed with rising light cover N/R N/R N/R N/R N/R N/R CMA ~ 30-40/lm or snow MgC1 ~ 15-35/lm 32 F, Apply ~ Apply ~ Reapply Reapply *Application rates will depend on dilution or below is Dry 30-40/ 15-35/ N/R ~30-40/ ~15-35/ potential imminent lm lm lm lm N/R *Do not apply CMA or MgC1 on heavy snow- accumulation or snow- pack 25 to 32 F, Wet, slush, N/R N/R Plow- as N/R N/R Plow- as *Do not apply CMA or MgC1 on heavy remaining in or light plow- as plow' as needed plow- as plow- as needed snow- accumulation or snow- pack range snow cover needed needed and apply needed needed and apply *Apply pre-wet abrasives only 20 to 25 F, Wet, slush, N/R N/R Plow- as N/R N/R Plow- as *Do not apply CMA or MgC1 on heavy remaining in or light plow- as plow' as needed plow- as plow- as needed snow- accumulation or snow- pack range snow cover needed needed and apply needed needed and apply *Apply pre-wet abrasives only 15 to 20 F, Dry, wet, N/R N/R Plow- as N/R N/R Plow- as remaining in slush, or plow- as plow' as needed plow- as plow- as needed *Do not apply CMA or MgC1 on heavy range light cover needed needed and apply needed needed and apply snow- accumulation or snow- pack snow *Apply pre-wet abrasives only Below 15 F, Dry or N/R N/R Plow- as N/R N/R Plow- as *Do not apply CMA or MgC1 at this steady or light snow plow- as plow' as needed plow- as plow- as needed temperature range falling cover needed needed and apply needed needed and apply *Apply pre-wet abrasives only 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 surf:ace 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.