In order to prepare the land, we are adding amendments and tilling them into the soil. On the side of the house is our septic system. For the bulk of the parcel we will till to 4 feet. Over the septic I had to find how low it was buried so we would not hit it and set the tines correctly on the tractor. I started by using a shovel, but this time of year the clay in the soil makes digging almost impossible…..so I remembered I had a jack hammer that I used at the last house for digging holes in clay. Made the task a lot easier, but still a lot of hard work. I found the septic about 3 feet down.