WALL — The 409 students at Allenwood Elementary School know the lunchtime drill. Grab a plastic foam tray, wait in the lunch line, sit down and eat lunch, then march the recyclable items to the green bins on the table at the front of the room. Cookie wrappers go in one bin, candy wrappers in another. Snack bags, string cheese wrappers, juice pouches and plastic lunch bags each are placed in separate containers. And although the plastic foam trays are not recycled, they are scraped, and fruits and vegetables are saved for the compost bin outside. Then the trays are stacked neatly so they take up as little space as possible in the trash container.