Late in the day the light here arrives from across the water, long and gold over the Hudson, and it shows every ridge and skip a mower leaves behind. Columbia Landscaping LLC cuts, trims and edges along the Routes 9 and 20 corridor and on the quiet lanes that branch off it, keeping lines straight enough to hold up in that low sun. Spring cleanups open the ground; fall cleanups close it, once the last leaves are off the roadside maples. A lawn that looks even from the mailbox and even again from the porch is the whole aim. It is ordinary work in a valley that has always been worked, and it is done with care.