This is what the new Marinwood Park landscaping facility should look like IMHO

Simple board and batten siding and earth tones conveys the appropriate rustic aesthetic for park. A smaller footprint is more efficient and will not interfere with the walk path 

Option 3 was conceived by Irv Schwartz in 2017.  It offers a smaller footprint, side access doors and respects the park
It can be closer to the modular office by moving the storage yard and eliminating employee parking.  It addresses all concerns about the Hansell White Elephant.
The building above can be neatly situated next to the modular building.