What factors influence contact time? - Soluble metals, particles of organic
matter, other microorganisms
How often do you report TTHMs? - Within 90 days after the exceedance
has been identified
TCEQ Surface Water B License Test with Questions
and Correct Answers| Latest Update | Verified
What factors influence contact time? - ✔✔Soluble metals, particles of organic
matter, other microorganisms
How often do you report TTHMs? - ✔✔Within 90 days after the exceedance
has been identified
What are the different types/classification of filters? - ✔✔N/A
What are the advantages and disadvantages of chlorine disinfection? -
✔✔Cost, residuals, organics inactivation
What should be determined for each filter and recorded monthly? - ✔✔Filter
rate and backwash rate
What is the culture media used in a presumptive test? - ✔✔N/A
What is Lactose or Lauryl broth? - ✔✔A selective and differential media for
coliforms
What is the purpose of filter underdrains? - ✔✔To provide necessary depth for
additional media and improve filter performance
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