Pride Plumbing came out and provided a cost estimate to perform the following work: 1) dig down in the yard to expose a section of the outside main sewer septic drain line; 2) cut the line and install a new backwater valve and a two-way cleanout; 3) test the new valve for leaks and working order; and 4) backfill, tamp, and spread grass seed and straw after the work has been completed.