"Ice pellets imbedded in Type IV fluids are generally not detectable by the human eye during pre-takeoff contamination check procedures. Therefore, a pre-takeoff contamination check in light ice pellet conditions would not be of value and is not required."

You have 25 minutes from START of application, to TO. How is that possible in LGA, EWR, etc...?
ALSO:

"a. Operations in Light Ice Pellets (Without any other Forms of Precipitation Present)."

Along with pellets, there was -FZRN,-SN,-BLSN,etc....., depending on the time of the day (at least in LGA), so how can you do this?

"(f) If ice pellet precipitation becomes heavier than light or is mixed with any other form of precipitation, the 25-minute allowance time cannot be used"