He has a system for this. The lid to the septic tank is under the lower deck. There is a hatch in the lower deck just a few screws to open it up. Then dig down a foot deep where you will find a stack of cinderblocks that sit on the septic tank lid just pull them out of the hole and the job is done. Much easier than the first time we did it. Digging several holes 3ft deep till we found the lid to the tank. Still it is a job digging and moving cinder blocks but not as bad as it could be. I'm going out to plant a lovely Russian Sage that was given to me last week at the swap.