Since the site sits on top of hill, there is no way to get a concrete truck in there to pour. We had to hire a concrete pumper to pump all 17 yards of concrete up the hill. Due to the power lines, we could not hire a boom truck. And, since we needed to be able to move the nozzle around the pour, we hired a grout pumper with a 2-inch line. A 4-inch would be too heavy for the men to move around. In order to pump concrete through a 2-inch line, you have to get smaller aggregate. The smaller aggregate costs a bit more per yard.