You can place leaves, grass clippings and small twigs (less than 1/2 inch in diameter) curbside to be collected as trash on your regularly scheduled trash collection days into:
You cannot mix twigs and branches greater than 1/2 inch in diameter with leaves and grass clippings. There is no limit to the amount of clippings that you can put out for collection as long as you produced them, not landscapers. It is illegal for commercial landscapers to dispose of yard waste by placing it at the curb for collection.
You can also compost leaves in your backyard, leave them on your lawn, or take them to a neighborhood-based leaf and yard waste composting site.