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"Gravity sewer tests must consist of which of the following? A. plugging the end of the building sewer at the point of connection with the public sewer and applying a pressure of 5 psi (34.5 kPa) greater than the pump rating, and maintaining such pressure for 15 minutes. B. plugging the end of the building sewer at the point of connection with the public sewer and applying a pressure of 15 psi (34.5 kPa) greater than the pump rating, and maintaining such pressure for 60 minutes. C. plugging the end of the building sewer at the point of connection with the public sewer, filling the building sewer with water, testing with not less than a 10-foot (3048 mm) head of water and maintaining such pressure for 15 minutes. D. none of these!"
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