Arrived to customers house to snake a drain back up that has already been snaked. Line backed up at the same spot but managed to push clog down to 46.5 feet. Ran a camera inspection down the line to see where clog is. Clog is at 46.5 feet and there seems to be a check valve in the pvc which should not be in a private residential home. Brad and Dan are to come back Monday to run a locating device to see where a pipe seems to be cracked. Customer is aware we have to come back and line is not 100% clear