Sleet reaches Chickahominy sideways, off the water and up the hill, and the streetlights along Hamilton Avenue turn it into something almost pretty until you have to walk on it. Dump Right LLC works those November nights — plowing, clearing drives and walkways, moving the piles somewhere they will not refreeze across a sidewalk, salting the slick corners. Greenwich's dense western streets do not leave much room for snow, so where it goes is half the job. By the time the first commuters come down the block, the pavement is dark again and the curb line is back. It is unglamorous, and it is the difference between a morning that works and one that does not.