Ca Grade 2 Wastewater Treatment Operator Practice Exam 1 | Comprehensive Practice Test| Exam Questions & Expertly Verified Answers (Newest Update 2025 | 2026)

Ca Grade 2 Wastewater Treatment Operator Practice Exam 1 | Comprehensive Practice Test| Exam Questions & Expertly Verified Answers (Newest Update 2025 | 2026) Quiz_________________? A grab sample is most suited for these constituents? - Answers residual chlorine Quiz_________________? A pond with a detention time of less than three days will perform similar to? - Answers sedimentation tank Quiz_________________? An increase in the acid/alkalinity ratio for an anaerobic digester means: - Answers Acid concentration is increasing or alkalinity is decreasing Quiz_________________? How does an activated sludge system remove watse from wastewater? - Answers biological treatment Quiz_________________? How much dissolved oxygen should be in a conventional activated sludge system if good effluent is being produced? - Answers 2 to 4 mg/l Quiz_________________? How often should an anaerobic digester be fed? - Answers several times a day Quiz_________________? How often should the sludge at the bottom of the clarifier be pumped? - Answers frequently throughout the day Quiz_________________? How will algae impact the chlorine demand in the pond effluent? - Answers increase the chlorine demand Quiz_________________? If a primary clarifier is placed out of service, then how should a plant with at least 2 trickling filters operate the system? - Answers operate the filters in series Quiz_________________? If the lab results show that the plant influent sample has COD of 100 mg/l and a BOD of 300 mg/l, which of the following is most likey true? - Answers lab results appear incorrect Quiz_________________? In general, how will warmer temp affect the settling rate of solids in a clarifer? - Answers Increase the settling rate Quiz_________________? Prior to entering a permit-required confined space, what should you verify? - Answers a standby person should be located outside the entrance to the confined space, while another person should be within sight or call of the standby person Quiz_________________? Select the most accurate statement about extended aeration? - Answers an oxidation ditch is usually operated in extended aeration mode, and is used for small flows Quiz_________________? The best way to evaluate the effluent TSS concentration from a plant is to: - Answers check the composite sample of TSS Quiz_________________? The effectiveness of disinfection is determined by: - Answers the coliform concentration in the effluent