A Test

Question 1

Who is required for taking lead and copper sampling

Answer 1

CSI Inspector

Question 2

Chlorine Dioxide will for what in water?

Answer 2

Chlorite Ion

Question 3

Chlorine gas reacts with certain source of organics and forms

Answer 3

HOCL Hypochlorus

Question 4

During filtration, particles become ___ to the filter media and solids accumulate within the ___ and the ___ of the filter bed?

Answer 4

Attached, Voids, Top

Question 5

Oxidants used in water are

Answer 5

Chlorine, Chlorine Dioxide, Potassium Perm, Ozone

Question 6

What does Texas Hazard Communication Act do?

Answer 6

Provide training, ensure list of hazardous materials and locations, MSDS availability

Question 7

Chlorine is affected by?

Answer 7

Contact time, Temp, pH, dosage, turbidity

Question 8

What is the MCL for nitrate?

Answer 8

10mg/L

Question 9

EPA drinking water standards say coliform organisms should not exceed?

Answer 9

1 per 100mL

Question 10

How long do you have to keep disinfection records?

Answer 10

3 years

Question 11

Taste and Odor in ground water are commonly caused by?

Answer 11

Hydrogen sulfide

Question 12

What does sequestering manganese do?

Answer 12

Binds iron and manganese in soluble form, preventing compound from oxidizing with air or chlorine

Question 13

What acts as a coagulant?

Answer 13

Sodium Aluminate, Aluminum Sulfate, Ferrous sulfate, ferric chloride, and ferric sulfate

Question 13

Benefits of sequestering iron and manganese?

Answer 13

Aerations or chlorination at the proper pH will oxidize the iron and manganese, causing precipitates to form

Question 14

What will cause a backwash on filters?

Answer 14

LOH, effluent > 1.0 NTU, Time

Question 14

Define how to remove DBP’s

Answer 14

enhance coagulation, alter disinfection strategy

Question 15

How do you get out of a boil water notice when a plant has gone over 5.0 NTU

Answer 15

Drop NTU < 1.0, flush, minimum residual met

Question 16

Steps taken when non-acute violation occurs

Answer 16

Notify TCEQ EOD, Submit notification copies to TCEQ within 10 days, public notice within 30 days with health effects

Question 17

How long do you keep Surface Water Monthly Operating Reports (SWMOR)?

Answer 17

10 years

Question 18

MCL for Lead

Answer 18

.015 mg/L

Question 19

What byproducts does Chlorin Dioxide form?

Answer 19

Chloride, Chlorate, Chlorite

Question 20

Percentage of lead allowed in solder and flux ____? In pipe and pipe fittings?

Answer 20

.2 & .25

Question 21

A turbidity meter must be able to read at least how much?

Answer 21

10% NTU???????????????????????? .10?

Question 22

Adding new reservoirs will?

Answer 22

Decrease availability downstream

Question 22

Who regulates the transfer of surface water in the State of Texas?

Answer 22

TCEQ

Question 23

Storage of water treatment chemicals must be in a supply for?

Answer 23

15 days of use

Question 24

How often do you check filter turbidity?

Answer 24

Every 15 minutes

Question 25

The use of pressure filters is allowed?

Answer 25

Plant <0.5MGD production

Question 26

Approved backflow devices in Texas are?

Answer 26

Air Gap, RPZ, Double check

Question 27

Groundwater has a ____ mineral content and ____ turbidity than surface water?

Answer 27

Higher, Lower

Question 28

The quantity of wash water should not exceed?

Answer 28

2GPM/sqft

Question 29

Good coagulation settling process should reduce the bacteria present by?

Answer 29

90%

Question 30

In what order do you test air with a gas analyzer

Answer 30

Oxygen - Flammable - Toxic

Question 31

The top of a water line should be below the frost line, but in no case can it be ____ inches below the ground surface

Answer 31

24

Question 32

A membrane filter is used in water laboratory to?

Answer 32

Test for the presence of coliform organisms

Question 33

A chlorine leak is determined by adding ammonia to the leak, what indicates a leak is present?

Answer 33

White smoke

Question 34

BacT samples are incubated at what temperature?

Answer 34

35C

Question 35

What do you do during a hydrostatic tank test?

Answer 35

See if 1.5X PSI is maintained for 2 hours

Question 36

What is a Bolson Aquifer?

Answer 36

Deep filled valley pockets???????????????????

Question 37

The management function defining an organizations goals time management and providing direction is?

Answer 37

Planning

Question 38

If a chemical is new and is going to be used for treatment, it must be approved by?

Answer 38

Must meet ANSI/NSF standard 60 and obtained by accredited supplier

Question 39

All of the following require a CSI inspection except

Answer 39

6 months after new meter install

Question 40

All of the following are required in the state of Texas except?

Answer 40

Title VII

Question 41

How long do you have to keep Surface water monthly operating reports?

Answer 41

10 years

Question 42

Time management does what?

Answer 42

Reduces stress, increase productivity, increase work life balance

Question 43

What coagulant should be used with low alkalinity?

Answer 43

High basic coagulant

Question 44

What is true color and what can't you do with it?

Answer 44

Water resulting from dissolved solids. Can't filter it out

Question 45

First action after a trench cave in?

Answer 45

Contact emergency services

Question 46

What happens when you blend chlorine and chloramine waters?

Answer 46

Cause taste and odor problems

Question 47

Some pathogens that enter surface water through wastewater effluent discharges form?

Answer 47

Cysts that are chlorine resistant

Question 48

What else can be used in a confined space besides a SCBA?

Answer 48

Forced airline regulator

Question 49

How long do you keep BacT records for?

Answer 49

5 years

Question 50

What does aerating the Hypolimnion do?

Answer 50

Adds Oxygen to the bottom layer

Question 51

How do you put out an electrical fire?

Answer 51

Carbon Dioxide Extinguisher

Question 52

Ground water tends to move

Answer 52

more freely where pores are larger and better connected

Question 53

A reservoir of a lake rich with nutrients and aquatic life is said to be?

Answer 53

Eutrophic

Question 54

Pre-sedimentation basins are primarily used to reduce

Answer 54

Silt

Question 55

A water main under a water way must contain?

Answer 55

Water tight encasement and valves on both sides

Question 56

The right to use groundwater in Texas is?

Answer 56

To the owner

Question 57

A filter must be backwasher at LOH

Answer 57

10 PSI

Question 58

What is not a disinfectant?

Answer 58

Potassium Permanganate

Question 59

Proper pretreatment and proper backwashing helps prevent?

Answer 59

Mud balls

Question 60

What samples are needed to proper nitrification

Answer 60

Total, Mono, Free, Nitrite, Nitrate

Question 61

The most often measured parameter in aeration test of water reservoirs is?

Answer 61

Oxygen

Question 62

Name the safety work zone options?

Answer 62

Advanced warning, Transition, Buffer, Work, Termination

Question 63

What must you do when changing chemical dosage?

Answer 63

Jar test

Question 64

Explain enhanced coagulation

Answer 64

Removal of DBP precursors, Preventing THM formations

Question 65

Explain what constitutes an E-Coli MCL hit?

Answer 65

E coli pos after total coliform, total coliform pos after repeat E Coli pos, fail to take repeat following E coli, Fail to test for E Coli when repeat Total Coliform sample are positive

Question 66

MCL of THM are

Answer 66

.08

Question 67

The most important causes of corrosion is?

Answer 67

Dissolved Oxygen

Question 68

If a system has a THM of .08, .08, .09, .06 over 4 quarters

Answer 68

operational level violation and an operational assessment will need to be performed

Question 69

What should you never do with a chlorine gas cylinder change?

Answer 69

Store horizontal

Question 70

If a water and wastewater new line has to cross the water line must be located?

Answer 70

6 inches above

Question 71

If you have a pump running 75% efficiency at 35 head and 400 GPM what is the BHP?

Answer 71

4.72 BHP

Question 72

If you take a pump from 2000 RPM down to 1250, what is your new GPM, HP, and BHP

Answer 72

313 GPM, 16HP, 1 BHP

Question 73

Mud ball math question, 695 ml total. Water begins at 500mL and rises to 545 mL. What is the percent of volume?

Answer 73

6%

Question 74

If a treatment plant uses Chlorine Dioxide it must

Answer 74

must submit cloMOR, levels each day entering system, # of chlorite samples each day

Question 75

high concentrations of dissolved solids in water tend to cause?

Answer 75

Scale in pipes and boilers

Question 76

Effective safety programs start with?

Answer 76

Support from the highest levels of management

Question 77

Four situations that cause a boil water notice?

Answer 77

Pressure < 20PSI, Chlorine residual <.2 or .5, BacT results, high turbidity > 5.0

Question 78

Guidelines to backwash

Answer 78

LOH, NTU 1.0, Flow controller wide open, over 100 Hours operation

Question 79

When total alkalinity equals hardness

Answer 79

carbonate hardness

Question 80

What do you need to determine a chlorine dosage

Answer 80

amount of chemical and volume of water being treated

Question 81

how filter media attracts

Answer 81

Through absorption, the molecular attraction that collects on the outside of the filter media grains

Question 82

Aeration can help THM in all ways except

Answer 82

Lowering organics