We had to deal with an area that was out of level by quite a bit. Over 30 inches of fill required in the highest corner. We trucked in 22 tons of gravel and topped it off with crushed stone. All contained in a pressure treated bulkhead with external tiebacks. After the bulkhead was built and leveled the true height we were dealing with gave me an idea. We buried 2 Infiltrators http://www.infiltratorsystems.com/products-solutions/chambers in the deeper end so we can rinse out our tanks for a thorough cleaning upon returning home. We have yet to trench a full 30 amp and 20 amp power distribution center over to the pad. It is about 14 x 30 and leaves plenty of area on the sides to work on the RV .
