Fixing sewer line

Got asked to provide a quote to builder I work with, a new house they recently sold the new owners found out the sewer line isn't draining properly. Bad enough as it is, worse that there is a brand new garage and deck over the lines. They scoped it and found there is a hump, but not sure of exact point. About 70' of run from house to alley, 10' of driveway, 20' garage, 30' open, 10' of a deck so fairly good chance it's not in the open part. They originally wanted a quote to replace entire...

Fixing sewer line

Fixing sewer line