Certified Pool Operator Handbook Practice Test exam 2023 with 100% correct answers

1. 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: clear the pool and raise the free chlorine to 2 ppm 2. 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? 3.5 gallons 3. 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: high levels of chloramines in the pool 4. To determine the level of chloramines in the water, you should do which of the following? test for total chlorine and free chlorine, then subtract the free chlorine number from the total chlorine 5. 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? 0.8 7. 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? -0.8 8. To adjust the tested Total Alkalinity in the pool in question #7 to an acceptable level, which chemical would be most appropriate? Sodium Bicarbonate 9. To adjust the tested pH in the pool in question #7 to an acceptable level, which chemical would be most appropriate? Sodium Carbonate