1. Place wheat berries in a medium bowl; cover with water to 2 inches above wheat berries. Cover and let stand 8 hours. Drain. Place wheat berries in a saucepan. Cover with water to 2 inches above wheat berries; bring to a boil. Reduce heat, and cook, uncovered, 1 hour or until tender. Drain.
2. Combine wheat berries, apple, and next 4 ingredients (through celery) in a large bowl. Combine oil and remaining ingredients in a small bowl, stirring with a whisk. Drizzle dressing over wheat berry mixture; toss to coat.