SBVC Sample WW Exam Study Guide
Solutions
Channel type grit chambers should have flow through velocity of at least 2.0 feet per second. (True or
False) - ANSWER-False
Aerobic digesters produce more methane gas than anaerobic digesters, but it is all lost to the
atmosphere in the aerobic digest...
Although carbon dioxide is not classified as a poisonous or explosive gas, a high level of this gas in a
confined space is still a safety concern. (True or False) - ANSWER✔✔-True
The first operating guideline that begins to change when an anaerobic digester is starting to become
upset is the pH. (True or False) - ANSWER✔✔-False
Chlorine dosage rate equals the chlorine demand minus the chlorine residual. (True or False) -
ANSWER✔✔-False
Turbidity is usually caused by high concentrations of dissolved solids. (True or False) - ANSWER✔✔-True
An operator would expect to find the highest concentration of hydrogen sulfide gas near the top of a
manhole. (True or False) - ANSWER✔✔-False
Nitrate compounds can be a source of combined oxygen when treating an upset pond system. (True or
False) - ANSWER✔✔-True
Normally, one would expect the pH to decrease when one observes an increase in the D.O. of a typical
facultative pond. (True or False) - ANSWER✔✔-False
Dissolved oxygen concentrations of 15 mg/L or greater may be found in a facultative pond during a late
summer afternoon on a sunny day. (True or False) - ANSWER✔✔-True
A 24 hour flow proportioned composite sample of chlorinated effluent should be used for the coliform
MPN test. (True or False) - ANSWER✔✔-False
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