Item B - Ice and Snow Policy - Laserfiche WebLink

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3. Winter Weather Event Tables Table 1. Weather Event: LIGHTSNOW Calcium Magnesium Acetate 25% Magnesium Chloride 27% Pre-wet Aggregate/Magnesium Chloride i~iti~ ~ ~ Mainte~ ction ~ Above 32 F, Dry, wet, ~ ~ *Monitor pavement temperature closely stead 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, MgC1 ~ 15-35/lm ory ' snow See See See ~ See See See ~ pre-wet aggregate comment comment comment ~ comment comment comment 32 F, Apply ~ Apply ~ ~ Reapply Reapply ~ *Application rates will depend on dilution or below is Dry 30-40/ 15-35/~ ~30-40/ ~15-35/~ potential imminent lm lm N/R ~ lm lm Apply ~ ~ plow- as plow- as ~ needed needed 25 to 32 F, Wet, slush, Apply ~ Apply ~ Plow- as ~ Reapply Reapply Plow- as ~ *Application rates will depend on dilution remaining in or light 40-50/ 20-40/ needed~ ~30-40/ ~20-40/ needed~ potential range snow cover lm lm and applym lm lm and apply ~ plow- as plow- as ~ needed needed 20 to 25 F, Wet, slush, N/R Apply ~ Plow- as ~ N/R Reapply Plow- as ~ *Application rates will depend on dilution remaining in or light plow- as 20-40/ needed ~ plow- as ~20-40/ needed ~ potential range snow cover needed lm and apply ~ needed lm and apply ~ *Do not apply CMA at this temperature ~ plow- as ~ range ~ needed 15 to 20 F, Dry, wet, N/R Apply ~ Plow- as ~ N/R Reapply Plow- as ~ *Application rates will depend on dilution remaining in slush, or plow- as 45-65/ needed~ plow- as ~45-65/ needed~ potential . range light cover needed lm and apply ~ needed lm and apply ~ *Do not apply CMA at th, s temperature snow ~ plow- as ~ range ~ needed Below 15 F, DW or N/R N/R Apply and ~ N/R N/R Plow- as ~ *Do not apply CMA or MgC1 at this stead or li ht snow plow- as plow' as plow' as ~ plow' as plow' as needed ~ temperature range Y g , · falling cover needed needed needed~ 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.