Hello, I am seeking advice on what you would have done in this case: Bid was to dig a drainage pipe: connecting 1 house gutter and a trench drain, to assist with pulling standing water away from the house, with a pop-up at the back property line (about 300 feet of piping). We were only told after providing the bid that they had a sprinkler system (heads not visible). Had Dig Rite mark all of the standard items and requested the owner to mark irrigation lines. We hand dug around the 1 intersecting point and found no irrigation lines or communication cables there - but we sure did hit EVERY irrigation line in our way, with a trencher. We were not near any sprinkler heads and were about 3 feet out from a fence that surrounds the pool - so we thought we were clear of the lines, especially since the homeowner marked where he thought the lines were. We agreed to fixing them (6 of them, with 3 different pipes, and 1 communication cable) free of charge since it was our "fault", THIS TIME. This added much frustration and an extra 2 days to the job.We don't want to repeat this event... How do you cover this with homeowners? Do you add any comments into your bids when dealing with digging near irrigation lines? Who do you think should cover the cost here? Thank you for taking time to respond.