A two-inch layer of mulch sits over amended and graded topsoil, bordered by a concrete walkway. The topsoil layer extends one foot six inches deep over native soil subgrade. The mulch maintains a maximum one-inch clearance above the adjacent concrete surface.
2" 1' - 6" MULCH AMENDED AND GRADED TOPSOIL NATIVE SOIL SUBGRADE CONCRETE WALKWAY 1" MAX.
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