Abstract: An apparatus (10) for leveling a layer of stone dust (24) of a foundation pad for a retaining wall, having a support assembly (12) and a scraper assembly (18). A pair of leveled guide rails (16) are utilized in parallel to support the scraper assembly such that the scraper assembly is longitudinally movable therealong. Each guide rail (16) is supported at each end by a respective support post (30) and is adjustably positionable vertically with respect to each support post such that both guide rails are levelable. The scraper assembly (18) includes a crossbar (42) with linear bearings (44) supported by respective ones of the guide rails, and also includes a depending pole (46) having a scraper blade (26) adjustably affixed at a bottom end thereof, the scraper blade being adjustable to level a bottom scraper edge (28) thereof.