2  The flushing water pressure in a water-lubricated wastewater pump should be ___________PSI more than the pump discharge pressure. (4)

 5  A sewer ________to a water line, must have a minimum of 10 feet of separation. (8)

 8  5,280 feet (4)

 9  A __________ prevents water from flowing back into the pump. (10)

11 Hydrogen sulfide gas smells like ____. (10)

17 A PH of 6.0 is (6)

19 Who must review plants for final approval before a new sewer can be constructed? (3)

20 amps x volts (5)

21 Closing the discharge valve on a centrifugal pump would cause motor the amperage to___________ (8)

22 A PH of 7 is _______ (7)

23 What must be done before any work is to be done on a piece of equipment? (4)

 2  Shoring is required for any trench over _____feet deep. (4)

 3  The impeller housing of a centrifugal pump (6)

 4  On floors where water or chemicals are commonly spilled, cover the floors with _____. (8)

 5  A ball forced through a sewer line. (3)

 6  Spacer ring in a pump packing gland to improve seal water distribution is a _____ ring. (7)

 7  Emergency stoppages in pipelines may be cleared safely by use of (6)

 8  cfs/1.55 (3)

10 Enclosed, open and semi-closed are terms used for the designation and selection of_________ (9)

12 A Parshall flume is a type of__________ (7)

13 What is the minimum distance from the edge of the spoils to the edge of the trench (7)

14 Shoring must protude ________ inches above the top of the excavation. (8)

15 To sample for pH, you should collect a____sample. (4)

16 A device used to test the percent deflection in a sewer pipe between manholes is known as what? (7)

18 26,928 gallons per hour of flow is equal to 1 _______. (3)