Landscape Island Topsoil Detail

A technical diagram illustrating the cross-sectional view of a landscape island topsoil layout. The drawing shows layers of soil, including a central mound of proposed topsoil on top of native soil. The topsoil is depicted with a hatch pattern and is centrally mounded to a height of 18 inches, while the side view indicates a 6-inch depth transition at both ends. An arrow labeled “VARIES” suggests that the horizontal spacing can change. The left side notes that the topsoil should be 3 inches lower if mulch is introduced to the island. Text annotations provide specific instructions for soil placement and depth adjustments.