I think it’s definitely worth it. Don’t even think about skimping on this! When we built a complex two years ago, we figured that since everything looked fine on paper, we could bring in the equipment right away. Thank goodness our site manager insisted on using ground-penetrating radar. We called Mayaglobal. They have Advanced detection equipment for detecting all kinds of underground surprises. They brought powerful scanners similar to lunar rovers and scanned the entire site in a couple of hours. What do you think? At a depth of one and a half meters, they found an abandoned concrete sewer pipe and a live power cable that hadn’t been marked. If we had hit it with the bucket, we would have left the whole neighborhood without power. If the plan is old, it’s worth playing it safe. How big is your site?