The screed rides low behind the paver, rakes work the edges by hand, and a drive that was gravel and ruts at breakfast lies dark and level by the middle of the afternoon. Theriault & Sons LLC does that work out of Amherst, New Hampshire, where the Souhegan slides past stone walls and white clapboard and the pines throw long shade across the shoulder — asphalt paving in two-coat, single-coat, or overlay, patch repair for potholes and root heave, driveway additions, gravel and crushed-stone drives, basketball and tennis courts, culvert replacement, site work for excavation, grading, drainage and retaining walls, and seal coating to keep the black true. When the cold comes around, the same surfaces get plowed clear, snow pushed back to the treeline before the day starts. There is a plain satisfaction in a finished edge: crisp against the lawn, water running where it was told to run, a yard that holds its shape through frost heave and thaw. That is the work, up and down southern New Hampshire.