The cache is NOT at the posted coordinates.
You will need to first complete the Bellwood Quarry at Westside Park Adventure Lab, Part 1 and Part 2. You will be able to walk to all 10 stages without any driving. Walking distance is 1.8 miles.
After completing Part 1, you will receive the NORTH coordinates for this cache. When Part 2 is completed, you will receive the WEST coordinates.