1.  An empty atmospheric storage tank is 8 feet in diameter and 32 feet high.  How long will it take to fill
          90% of the tank volume if a pump is discharging a constant 24 gallons per minute into the tank?

A. 7 hours 31 minutes B. 8 hours 21 minutes C. 8 hours 23 minutes D. 9 hours 17 minutes

2.  Two columns of water are filled completely at sea level to a height of 88 feet.  Column A  is 0.5 inches in diameter  Column B is 5 inches in diameter.  What will two pressure gauges, one attached to the bottom of each column, read? 
Column A      Column B

A. 3.8 psi and 38.0 psi B. 8.8 psi and 8.0 psi C. 20.3 psi and 20.3 psi D. 38.0 psi and 38.0 psi

3.  A ditch that is 4.5 feet wide, 6 feet deep, and 120 feet long has to be dug for a water line.  How many cubic yards of material must be removed?

A. 120 cubic yards B. 240 cubic yards C. 850 cubic yards D. 1,200 cubic yards

4.  How many cubic feet of water will a rectangular tank that is 20 feet long by 15 feet wide and 10 feet high hold?

A. 2,000 cubic feet B. 3,000 cubic feet C. 4,000 cubic feet D. 5,000 cubic feet

5.  Calculate the chlorine demand using the following data.
--Raw water flow is 0.75 MGD.
--Chlorinator feed rate is 4.0 mg/L.
--Chlorine residual is 1.8 mg/L.

A. 0.8 mg/L B. 2.2 mg/L C. 4.0 mg/L D. 5.8 mg/L

6.  Convert 60.5 degrees Fahrenheit to degrees Celsius.

A. 15.8 degrees Celsius B. 20.6 degrees Celsius C. 72.0 degrees Celsius D. 101.2 degrees Celsius

7.  Calculate drawdown, in feet, using the following data.
--The water level in a well is 20 feet below the ground surface when the pump is not in operation.
--The water level is 35 feet below the ground surface when the pump is in operation.

A. 15 feet B. 20 feet C. 35 feet D. 55 feet

8.  Calculate the volume, in gallons, of a tank that is 75 feet long, 20 feet wide, and 10 feet deep.

A. 15,000 gallons B. 112,200 gallons C. 150,000 gallons D. 224,400 gallons

9.  How many pounds of a chemical applied at the rate of 3 mg/L are required to dose 200,000 gallons?

A. 3 lbs B. 5 lbs C. 16 lbs. D. 50 lbs.

10.  Calculate the average weekly flow for a system with the following data.

Sunday-3,000 gallons	Monday-4,000 gallons	Tuesday-3,500 gallons	Wednesday-2,000 gallons
Thursday-3,000 gallons	Friday-3,500 gallons	Saturday-2,000 gallons

A. 2,000 gpd B. 3,000 gpd C. 4,000 gpd D. 5,000 gpd

11.  After a new water main is installed and pressure tested, it should be:

A. Flushed with clean water for 24 hours and put into service B. Filled with a solution of 25 ppm to 50 ppm free chlorine for at least 24 hours prior to flushing C. Filled with clean water and allowed to sit for 5 days at full pressure before turning the water into the system D. Photographed so that mapping can be avoided until the system is complete

12.  Chlorine demand is satisfied at the point when:

A. The reaction of clorine with organic and inorganic materials stops B. Free chlorine residuals reach 2.5 mg/L C. An odor of chlorine is present D. Chlorine reaches the last tap

13.  What chlorine concentration should be produced when disinfecting a well or well pump?

A. 25 mg/L B. 50 mg/L C. 75 mg/L D. 100 mg/L

14.  When disinfecting a new or repaired main, what is the minimum chlorine residual at the extreme end of the main after standing for 24 hours?

A. 15 mg/L B. 20 mg/L C. 25 mg/L D. 30 mg/L

15.  Chlorine will destroy bacteria most rapidly at what pH?

A. 7.5 B. 8.5 C. 9.5 D. 10.5

16.  What is the process of adding chlorine to water until the chlorine demand has been satisfied called?

A. Contact time B. Reliquefaction C. Hypochlorination D. Breakpoint chlorination

17.  Which of the following pH ranges would deposit a thin film of calcium carbonate on the inside surface of a pipe?

A. 2.0 - 3.0 B. 4.0 - 5.0 C. 6.0 - 7.0 D. 8.0 - 9.0

18.  Where should sodium hypochlorite (liquid bleach) be stored?

A. Away from flammable objects, as it is a fire hazard B. Away from equipment that is susceptible to corrosion C. In closed containers at room temperature for no longer than 6 months D. Near the chemical feed pump day tank, to lessen operator handling risks

19.  What is the most important reason for maintaining a continuous positive pressure throughout the distribution system?

A. Prevent damage to water meters B. Keep pipe joints sealed C. Prevent contamination from backflow D. Maintain chlorine residual

20.  A weir should be used to measure water in which of the following locations?

A. Above ground storage tanks B. Household service lines C. Open channels D. Water mains

21.  The pumping water level is best defined as the distance from the top of the well to the:

A. Intake screen of the pump B. Location where the main flow of water enters a well C. Water after the pump has been operating for a period of time D. Water level from the start of a pump test to the end of the test

22.  The space between the inner or protective casing and the outer casing or drill hole should be filled with cement grout to a minimum of how many feet?

A. 10 feet B. 15 feet C. 20 feet D. 35 feet

23.  When bringing a community water service to a home with a private well, what is the most positive method of preventing a cross connection between the two systems?

A. Residential dual check valve B. Reduced pressure zone backflow preventer C. Complete isolation between the two systems using an air gap D. Pressure vacuum breaker in addition to an RPZ

24.  What is the physical connection, direct or indirect, which provides the opportunity for nonpotable water to enter a conduit, pipe or receptacle containing potable water?

A. Well testing B. Pump injection C. Bell joint clamp D. Cross connection

25.  Which of the following causes taste problems and has a rotten egg odor?

A. Chlorine B. Benzene C. Nitrate D. Hydrogen sulfide

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