I won't belabor this issue. Concrete is the ONLY medium for the construction of a municpal skatepard. It retains a "due care" state, without the kind of maintenance that is necessary with other media. Your skatepark will WORK at acceptable safety levels for YEARS.
Look at Columbus' 20+ year-old concrete park. This is the ONLY way to create a park. Not to mention sculptability, durability, and the undeniable popularity of the medium. A quality, concrete skateboarding medium in our neighborhood will ensure a constant flow of people to our business and idea-pool.
A quality concrete skatepark in several neighborhoods on the bus routes will slingshot Cincinnati into a brighter future. There is no doubt that a city that creates media for this culture is going to be in the travel plans of people from many states and countries.