In a small bowl, mix the maple syrup, soy sauce, garlic, garlic salt, and pepper.
Place salmon in a shallow glass baking dish, and coat with the maple syrup mixture. Cover the dish, and marinate salmon in the refrigerator 30 minutes.
Preheat oven to 400 degrees F.
Place the baking dish in the preheated oven, and bake salmon uncovered 20-25 minutes, or until easily flaked with a fork.
Meanwhile, in a medium sized bowl, prepare salad mixture.
Place cooked salmon on top of a fresh salad. Drizzle leftover sauce over the salad to serve as the dressing.