Half the driveways in Mahopac lean uphill and half the lawns fall away toward a stone wall — this is not flat country, and the work reflects it. S&M CONSTRUCTION & LANDSCAPING mows and trims those slopes through the season, keeps hedges and shrubs in shape, mulches the beds and clears the yard out in spring and again when the oaks drop. Then the calendar turns, and the same grades that make mowing interesting make plowing serious: driveways opened, walkways shoveled, ice handled before it sets. A steep drive cleared down to the pavement on a January morning is its own kind of good news. Mahopac and the neighboring hamlets are the run.