Pride Plumbing came out and provided a cost estimate to dig down underneath a concrete sidewalk, cut into the outside main sewer septic drain line, and install a new two-way PVC cleanout with a cap (connecting it to the existing outside main sewer septic drain line going to the town sewer tap, and the septic line going underneath the building's foundation, with new PVC fittings and/or Fernco couplings). After the cleanout is installed, we will attempt to use a water pressure device to unclog the drain line. Once the drain line is clear, we will insert a camera into it to determine its condition.