Day Three Flashcards
Plant matter in water contain carbon and are considered
A. Fecal
B. Aerobic
C. Organic
D. Toxic
C. Organic
Ideally, water storage tanks should turn over at least __________ in a 24 hour period.
A. 10%
B. 20%
C. 25%
D. 50%
B. 20%
Handle Customer water quality complaints:
A. Once several people in the same area have complained
B. As time allows
C. If the water plant thinks there is a problem
D. Promptly and Seriously
D. Promptly and Seriously
The __________ the water, the quicker chemical reactions take place.
A. Cleaner
B. Smellier
C. Warmer
D. Cooler
C. Warmer
An Operator may feed powder activated carbon (PAC) on top of conventional filters if
A. The water is pink due to overfeeding potassium permanganate
B. There has been a drop in pH due to algae growth
C. The chlorine gas injector stopped working
D. The filter has lock up due to air binding
A. The water is pink due to overfeeding potassium permanganate
Keep any and all backflow records for __________ years.
A. 2
B. 5
C. 10
D. To infinity and beyond
A. 2
A system (community or non-community) that used ground water only, and serves a population less than 10,000 and does not treat for a primary contaminant is
A. ID
B. Class I
C. Class II
D. In a holler
B. Class I
TTHMs and HAA5s can be formed when __________ reacts with __________
A. Chlorine; Coliform
B. Chlorine; Viruses
C. Potassium Permanganate; Organics D. Chlorine; NOM
D. Chlorine; NOM
The SMCL for Iron and Manganese are __________ mg/L
A. 0.08; 0.06
B. 0.06; 0.08
C. 0.8; 0.6
D. 1.0; 10.0
Correct answer: 0.3mg/L; 0.05mg/L
Breakpoint Chlorination occurs once
A. water is sterilized
B. chlorine demand has been met
C. 2-log removal begins
D. Turbidity breaks through
B. chlorine demand has been met
Lead and Copper Samples should never be taken:
A. At the kitchen sink
B. At the bathroom sink
C. First thing in the morning
D. At an outside spigot
D. At an outside spigot
Greensand filters are useful to remove:
A. Manganese and Iron
B. Algae Blooms
C. Lead and Copper
D. Crystal Meth
A. Manganese and Iron
What is the most effective mechanical device to prevent backflow
A. Check Valve
B. RPZ
C. Air Gap
D. Joiner
B. RPZ
Customers gauge water quality based on:
A. Physical Qualities
B. pH and alkalinity
C. How full the water tanks are
D. The water rates
A. Physical Qualities
Radioactive __________ gas is commonly found in groundwater
A. Arsenic
B.Chlorine
C. Helium
D. Radon
D. Radon
Water hardness is generally caused from the ions of calcium and
A. Minerals
B. Magnesium
C. Manganese
D. Malachite
B. Magnesium
If the Sample Site Plan has to be changed, get all changes approved by the OEHS District Engineers
A. By the 10th day of the following month
B. Before the 25th
C. Prior to sample collection
D. On the full moon
C. Prior to sample collection
How much time does an operator have to deliver bacT samples to the lab?
A. 24 Hours
B. 30 Hours
C. 36 Hours
D. 48 Hours
B. 30 Hours
If a BacT sample does not arrive to a certified lab within 30 hours or the sample is frozen, causing the lab to reject the sample, a __________ sample must now be taken
A. Violation
B. Special Purpose
C. Routine
D. Replacement
D. Replacement
The effective date for the new lead and copper rule is:
A. July 1, 2022
B. January 30, 2023
C. October 16, 2024
D. December 31, 2024
C. October 16, 2024
MCL for Nitrate and Nitrite
A. 1.0 and 10.0 mg/L
B. 0.05 and 0.03 mg/L
C. 10.0 and 1.0 mg/L
D. 0.03 and 0.05 mg/L
C. 10.0 and 1.0 mg/L
