To find this cache, go to stage 1 at the provided coordinates. There is information on the plaque for Koch Memorial Field that you will need to find the final stage.
For the north coordinates, look below the city seal and count the letters in the top 3 lines of the plaque. Then, subtract the total from the last two decimal minutes in the north coordinates of stage 1.
For the west coordinates, count how many times the letter M appears on the plaque. Then, subtract that from the last two decimal minutes in the West coordinates of stage 1.
Enjoy the park. Some of the best sunsets we have ever seen have been at the park with watching the sunset over the lake. Please no night caching as the park closes at dusk.