The surface on the new playground is permeable; you can literally pour a bucket of water on it and see it disappear. The rubberized material also provides a cushioned surface and is not made from recycled tires. The City of Atlanta now uses this material in many parks as it is a better choice than recycled tires for play areas.
The base material under the rubberized surface is commonly known as “crusher run”, which is a gravel mix that forms a solid base. This same surface was used under the old playground.