The location and details of all subsurface structures, including storm sewers, sanitary sewers, telephone, electrical, gas, water, manholes, valve boxes, hydrants and other appurtenances, giving top and invert elevations, direction of flow, size of appurtenances, ownership, capacity, pressure leads, materials, type, and projected routes. The location of existing structures such as water and sewer mains, utility structures, gas transmission lines and high-tension power lines on the tract and within 200 feet of its boundaries.