Heat oven to 450°F. Placing slightly off center, divide carrots evenly onto parchment circles.
Holding knife on a slant (45° angle), cut each salmon piece into 4 or 5 thin slices. Place salmon over carrots; sprinkle with leeks.
In small bowl, combine wine, oil, salt and pepper; mix well. Drizzle wine mixture evenly over fish and vegetables. Fold parchment in half; crimp edges to enclose fish and vegetables. Place on cookie sheet.
Bake at 450°F. for 10 to 12 minutes or until fish flakes easily with fork. To serve, place packets on serving plates and cut an X in each.