Pride Plumbing came out and performed the following work: 1) from a floor drain in the bathroom, used a sewer machine to unclog a blockage; and 2) used a sonar location device to locate and mark the outside main sewer septic drain line from the building to the septic tank. We also provided a cost estimate to 1) trench a ditch from the building to the septic tank to expose and remove the outside main sewer septic drain line; 2) install a new 4-inch PVC sewer drain line (connecting it to the main drain line under the home) along with proper cleanouts and fittings per code; 3) install tracer wire in the ditch along with the new sewer drain line; and 4) seal the septic tank penetration and backfill, tamp, and spread grass seed and straw after the work has been completed.