tests you observe the following readings: Total Available Chlorine reading is 1.6

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Quiz____?

• You operate a 120,000-gallon pool, and upon performing your hourly chemical

tests you observe the following readings: Total Available Chlorine reading is 1.6 free available chlorine reading is 1.5 pH is 7.4 Your supervising lifeguard has just informed you that you have had a fecal incident occur; a solid stool has been discharged into the pool. According to the Centers for Disease Control, as the

CPO, you should do the following: -

Answer✓✓ clear the pool and raise the free chlorine to 2 ppm

Quiz____?

• Assuming that your local health department requires you to raise the free

chlorine to 5 ppm, how much sodium hypochlorite would be needed to raise the free chlorine in the pool in question #1 to that level? - Answer✓✓ 3.5 gallons

Quiz____?

• You are the CPO for an indoor health club pool. The facility manager informs

you that he is receiving complaints about a strong chlorine odor in the pool area, and several members have complained of eye irritation. The most likely

cause of these complaints is: -

Answer✓✓ 1 / 3

2 high levels of chloramines in the pool

Quiz____?

• To determine the level of chloramines in the water, you should do which of

the following? - Answer✓✓ test for total chlorine and free chlorine, then subtract the free chlorine number from the total chlorine

Quiz____?

• You operate a 45,000 gallon indoor pool, and upon doing your hourly

chemical tests you observe the following readings:Total available chlorine is 2.2 Free available chlorine is 1.4 and pH is 7.6 What is the level of chloramines in this pool? - Answer✓✓ 0.8

Quiz____?

• You are the operator of a 330,000 gallon outdoor pool. Your local health

department requires you to perform a water balance calculation once monthly.Upon performing the water tests necessary to perform this calculation, you observe the following readings in your pool: Total alkalinity is 50 ppm pH is 7.2 Calcium Hardness is 150 ppm Temperature is 76 degrees F Total Dissolved Solids is 500 ppm Using these readings, what is the Saturation Index for this pool? - Answer✓✓ -0.8

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3 Quiz____?

• To adjust the tested Total Alkalinity in the pool in question #7 to an

acceptable level, which chemical would be most appropriate? - Answer✓✓ Sodium Bicarbonate

Quiz____?

• To adjust the tested pH in the pool in question #7 to an acceptable level,

which chemical would be most appropriate? - Answer✓✓ Sodium Carbonate

Quiz____?

• You are the CPO for a 28,000 gallon hotel pool. You perform a water

balance chemical test, and to your surprise, the Calcium Hardness is only 100 ppm. How much calcium chloride (77%) would be required to increase this to 400 ppm?" - Answer✓✓ 100.8 lbs.

Quiz____?

• You are the CPO for a 100 foot long, 50 foot wide country club pool. The

average depth of this pool is 7 feet. You return to the pool on Monday morning, after a rare weekend off, and find that the auto-fill feature has failed to work, and the pool water level is four inches too low. How many gallons of water must be added to return the water to the proper level? - Answer✓✓ 12,495 gallons

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