The listed coordinates indicate where the first stage of the multi-cache can be found. At the first stage is a clue that contains the coordinates for the final, where you will find the cache container. Be sensitive of the wetlands - to find the clue at the first stage, you do not need to leave the paved trail/boardwalk or bushwack. You may get a lot of GPS bounce in this area, use your geosense and the hint if necessary.
The final is no more than 1/4 mile away. The cache is a square lock-and-lock container, 20-30 feet off of the trail.