PROJECT CASE STUDY he sewer systems original- ly built in many cities were designed to carry storm wa- ter and raw sewage from manholes and drains away from homes and businesses in a single, combined pipe. Prior to sew- age treatment plants, the contents of these combined sewer systems would then be transported to the nearest river. In the 1950s, based on the development of sewage treatment plants, the contents of combined sewer systems w

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