Fog lifts off the Kennebec and sits on Bath until the sun burns a hole through it, and then the brick on Front Street goes warm and the lawns start to steam. Brookton Landscapes Inc works the city at both ends of the calendar — mowing, trimming, edging and tending beds while the river runs green, then plowing, shoveling and salting once it runs gray. On the slopes above the shipyard the yards are small and steep and every edge shows, which is exactly why the edge is worth cutting clean. Cleanups in April and again in November mean nothing carries over. Bath, Woolwich, West Bath and Phippsburg, whatever the river happens to be doing.