The Big Dig

Saturday and Monday saw the plumbers dig trenches arround the house parameter and lay storm water plumbing including two large grated rain water pits that will work on a sealed system and expel water via electric pumps once the pit reaches a specific height. Not sure what happened to good old fashioned gravity, but hey it's 2012. My question is their a iPhone app for this system? All pipes are around 1.2 metes out from the slab so it was kind of lucky I was able to take a bunch of photo's before they filled in the holes so I know where not to dig in the future.