There is a BIG sign at the listed co-ords. According to Google earth image dates, this sign has been here for over 3 years. However shortly after placing this cache, the site started to be developed, and there has been a new sign screwed over the old one. The image below was the original 3 year old sign.
You'll need to search for the last 3 digits of the latitude and longitude for the final co-ordinates, written somewhere on the sign. The southerly ones are near an 'S' and the easterly near an 'E'. The actual cache can be retrieved anytime, but stealth and quietness may be required.
Happy hunting.
NOTE: May 2021 - Even though the sign is only half there, the co-ordinates are still readable.