A February thaw on the Mount Washington streets turns three days of snow into slush by noon and glass by dark. Harrimans property maintenance plans for both ends of that: plowing, shoveling stairs and landings, snow blowing tight side yards, sanding and salting the spots that refreeze first. When the melt finally holds, the same properties get cleaned up and cut — edging, trimming, mulch, the regular mowing through summer, leaf removal once the maples turn. Hillside lots and close-set houses take patience and a narrower machine, and that's most of the job here. Haverhill and the towns close at hand, right through the calendar.