At the listed coordinates you will find a further set of coordinates. The street name gives you a hint on what to look for next 
A little tip:
Smartphones (or other devices to access the internet) are very handy little gadgets which can save you a second trip , but unfortunately they are not yet smart enough to do it all and the thinking is still up to you 
PLEASE be very stealthy when looking for the initial stage and stage1, as I don't want the field puzzle to go missing!!!
Please treat the field puzzle carefully and make sure you put the instructions back into the ziplock bag to keep them protected from moisture.
The actual cache container is big enough to house some trackables.
Watch out for muggles coming past in cars.
I will not yet give a hint on how to solve the field puzzle - I will add one if it turns out to be too difficult
The first finder will also find a reward for their efforts
You can check your answers for this puzzle on GeoChecker.com.