Beaver Creek keeps a green seam across Farmington all summer, then goes still and glazed by December — the whole year held in one small stream. High Peaks Contractors of WNY works both ends of it: mowing, trimming and edging while the grass is rising, then plowing, shoveling and salting once the ground locks up. The changeover happens fast in this part of western New York, and the machinery simply changes hands with the calendar. What does not change is the standard — a lawn cut level, a driveway taken down to the surface, no half measures in either direction. Farmington, Victor, Macedon and Canandaigua are all within reach.