This PVC Pipe News article shows how the Avon Lake Municipal Utility installed a sanitary sewer pipeline inside an existing combined sewer. The result was a separated system. The title is "Avon Lake Municipal Utilities Combined Sewer Separation Project."
Monroe Township, New Jersey- 30-inch over 40 feet deep
Case history of 30-inch PVC gravity sewer pipe installed at a depth exceeding 40 feet. Flexible pipe solves deep bury site conditions.
Rockport, Indiana - 36-inch
Project utilizing approximately 7 miles of 36-inch F-679 solid wall gravity sewer pipe.
rowlett, texas - failing ductile iron sewer
PVC was selected to replace a large diameter, ductile iron, sanitary sewer line that failed prematurely due to internal corrosion. The article's title is "Rowlett, Texas Encounters Unexpected Sewer Line Repair."
Tucson, Arizona - 48-inch PVC Sewer
This article "Dealing with Disaster" provides an overview of the construction of a 48-inch gravity sewer to replace failing infrastructure in Pima County.