Class Ii Water Operator Review

Front 1

MCL

Back 1

Maximum Contaminate Level Goal

Front 2

Action Level

Back 2

The level of lead or copper which, if exceeded in over 10% of the homes tested, triggers treatment or other requirements that the water system must follow

Front 3

Who can test?

Back 3

Only Certified operator

Front 4

pH and flow

Back 4

Have a direct effect on Aeration

Front 5

Nitrite MCL

Back 5

1.0mg/L

Front 6

Nitrate MCL

Back 6

10.0 mg/L

Front 7

Chlorine demand

Back 7

The difference between the amount of chlorine added to water and the amount of residual chlorine remaining after a given contact time. Chlorine demand may change with dosage, time, temperature, pH and natural amount of impurities in the water.

Front 8

Temperature rise and fall

Back 8

Things happen faster in warmer temperatures and slower in cooler temperatures. Chemical feed will slow down in colder conditions.

Front 9

Fluoride MCL

Back 9

Primary= 4mg/L secondary= 2mg/L

Front 10

(HAA5) (Five) Haloacetic Acids

Back 10

MCL=. 06

A group of disinfection byproducts. The sum of the concentrations in milligrams per liter of the Haloacetic Acid compounds (monochloroacetic acid, dichloroacetic acid, trichloroacetic acid, monobromoacetic acid, and dibromoacetic acid) rounded to two significant figures after addition.

Front 11

Trihalomethanes (THM)

Back 11

A byproduct of drinking water disinfection. Can cause liver, kidney, or central nervous system problems, as well as increase the risk of cancer.

Front 12

What method removes a significant amount of (THM) precursors?

Back 12

Sedimentation

Front 13

What would cause Flock to break up?

Back 13

Mixing to fast. Key to successful flocculation is slow and gentle.

Front 14

What parameter is most important in the filtration process?

Back 14

Turbidity

Front 15

What parameters are adjusted to make water less corrosive?

Back 15

Alkalinity and pH

Front 16

What is flash mixing?

Back 16

Method used to evenly distribute chemicals during the treatment process.

Front 17

2 types of activated carbon?

Back 17

Powder and granulated or PAK and GAK

Front 18

Action level for lead

Back 18

. 015

Front 19

Action Level for copper

Back 19

1.3

Front 20

Phosphate used for corrosion control should be applied at what point?

Back 20

Upstream (before) chlorination

Front 21

Ferric chloride does what to pH?

Back 21

Decreases pH

Front 22

Why do we treat for iron and manganese?

Back 22

Iron and manganese can cause staining and discoloration

Front 23

What is fish eyes?

Back 23

Large sticky balls of polymer

Front 24

Direct filtration skips what step?

Back 24

Sedimentation

Front 25

Separate layers of a lake ?

Back 25

Stratification or thermal stratification

Front 26

How is acid mixed?

Back 26

Add acid to water

Front 27

Interpretations approved methods

Back 27

Measured by lowering pH to 4.5

Bromcresol green - methyl red (not approved /operator)

Front 28

1st impression

Back 28

Public contact with employees

Front 29

MSDS

Back 29

Material Safety Data Sheet. Required to be made available to employers and operators Whenever there is the likelihood of the hazardous substance or mixture being introduced into a workplace.

Front 30

Black particles

Back 30

Braided steel riser

Front 31

Customer complains play foul smell coming from water tank What would be a possible cause?

Back 31

Sacrificial anode

Front 32

Short-circuiting

Back 32

The condition that occurs in tanks or basins when some of the water travels faster than the rest of the flowing water. This is usually undesirable since it may result in shorter contact, reaction, or settling times in comparison with the theoretical (calculated) or presumed detention times.

Front 33

Valves

Back 33

a device for controlling the passage of fluid or air through a pipe, duct, etc., especially an automatic device allowing movement in one direction only.

Front 34

How often should turbidity meters be calibrated?

Back 34

3 months or quarterly

Front 35

What could cause a algae bloom?

Back 35

A problem with disinfection

Front 36

When taking a sample this must be included.

Back 36

The chlorine residual should be listed

Front 37

Corrosion control measured in terms of

Back 37

Caco3 =Calcium Carbonate

Front 38

Volatile

Back 38

A substance that is capable of being evaporated or easily change to a vapor at relatively low temperatures. For example, gasoline is a highly volatile liquid.

Front 39

Maximum residence time (MRT)

Back 39

The point of MRT for each plant is an active point in the distribution system where the water has been in the system the longest.

Front 40

Max horizontal distance between water and sewer.

Back 40

10 feet

Front 41

Sequestering

Back 41

<Adding a sequestering agent will keep the iron and manganese and suspension so it will not participate and cause staining problems.

< temporarily ties up Fe & Mn

<breaks down with (time) and (elevated temperature)

Front 42

Non emergency use of a fire hydrant

Back 42

Is prohibited without written consent

Front 43

Class II renewal and training

Back 43

24 hours and every 2 years

Front 44

Why would you not feed CaCo3 in a hypochlorinator? (poppet ball valve)

Back 44

Calcium buildup, crust or film will form. Scale or build up

Front 45

Evaluation of filter process is done by checking

Back 45

Turbidity

Front 46

Aeration to remove iron and manganese is effected by

Back 46

pH and flow

Front 47

MUNRO

Back 47

M= MICRO FILTRATION

U= ULTRA FILTRATION

N= NANO FILTRATION

RO= REVERSE OSMOSIS

Front 48

Iron

Back 48

Fe

Front 49

Manganese

Back 49

Mn

Front 50

What increases the corrosiveness of water?

Back 50

High dissolved oxygen

Front 51

Cathodic Protection

Back 51

An electrical system for prevention of rust, corrosion, and pitting of metal surfaces which are in contact with water or soil.

Front 52

2 device in a electrical system to protect from injurie.

Back 52

Circuit breaker and fuses

Front 53

What process is used to disperse the coagulant and neutralize the charges

Back 53

Flash mixing

Front 54

A tier 2 public notice is required for

Back 54

NTU 95th percentile Excursion

Front 55

What are two types of activated carbon?

Back 55

GAC AND PAC

Front 56

Why would an operator treat for iron and manganese?

Back 56

To combat staining and discoloration

Front 57

When taking bacteriological samples what is the most important step in this process?

Back 57

Take and record the chlorine residual.

Front 58

Contaminants formed when disinfectants react with Organics

Back 58

DBPs

Front 59

To ensure accurate and safe NTU readings, calibrate the turbidimeter once every

Back 59

Quarter (3 months)

Front 60

PW's must submit the Monthly Operational Report by the :

Back 60

Tenth day of the following month.

Front 61

Class II renew every ______ years with ______ continuing education hours.

Back 61

2, 24

Front 62

Systems may qualify to only meet the standards of a__________ when reaching the MCL is not economically or technologically feasible.

Back 62

Maximum Contaminate Level Goal (MCLG)

Front 63

The gentle mixing stage, increases the particle size from submicroscopic microflock to visible suspended particles

Back 63

Flocculation

Front 64

A plant operator observes that large flock particles have broken through to the top of filters. The Operators concern now is

Back 64

Backwash will be shortened because the flock is clogging the top of the filter.

Front 65

Maximum residence time is :

Back 65

Where the oldest water distribution is

Front 66

Low Inlet water pressure causes gas bubbles to form on impellers describe

Back 66

Cavitation

Front 67

The two largest membrane pores primary remove

Back 67

Microorganisms

Front 68

With colder water temperatures coming, generally water treatment processes will

Back 68

Slow down

Front 69

A chemical that is able to be evaporated or changed into a vapor is described as

Back 69

Volatile

Front 70

Which step of the conventional water treatment removes the largest amount of TTHM precursors

Back 70

Sedimentation

Front 71

A one ton chlorine cylinder the top enduction pipe______ and the lower enduction pipe______ :

Back 71

Delivers gas;delivers liquid

Front 72

The best indication that filters are working properly is to monitor the

Back 72

NTU (influent and effluent turbidity)

Front 73

Customer complaining about a rotten egg smell every time the customer takes a hot shower

Back 73

Suggest customer replace sacrificial anode on hot water tank

Front 74

Has been decided to feed polyphosphate to protect water lines from corrosion. Injector point for the polyphosphate should be

Back 74

Before the chlorinator

Front 75

Which of the following is a differential pressure meter

Back 75

Venturi meter

Front 76

A PWS (public water service) begins to monitor water quality parameters due to

Back 76

Seeding the lead AL

Front 77

A PWS (public water service) begins to monitor water quality parameters due to

Back 77

Exceeding the lead AL

Front 78

MCL fluoride

Back 78

4

Front 79

Secondary MCL fluoride

Back 79

2.0

Front 80

Lead AL

Back 80

0.015

Front 81

Copper AL:

Back 81

1.3

Front 82

THMs

Back 82

. 08

Front 83

HAA5 (HA5) (Five)

Back 83

. 06

Front 84

Repairs are made to a water leak and tubercles have formed on the inside of the lines, so it is likely _______ pipe?

Back 84

Ductile Iron

Front 85

Cody has been asked by his chief operator to never wear any of the following in the Elkins WTP lab

Back 85

Contact lenses

Front 86

What is used to control, stop, or change direction of water in mains

Back 86

Valves

Front 87

During coagulation the flock is sheared and broken it is likely due to

Back 87

Mixer speed too high

Front 88

Class 2 operator's all over the state use the acronym to remember membrane pore size

Back 88

MUNRO

Front 89

Jonathan has been asked to create a ______ for a booster Pump Station to ensure the correct size pump is installed

Back 89

Pump Curve

Front 90

Aeration is effective at iron and manganese control, however it requires careful monitoring of

Back 90

Flow and pH

Front 91

Using the Langlier index measures hardness using

Back 91

Calcium carbonate CaCO3

Front 92

If John shuts down and uses a lock to isolate power to the flocculation motors so that the vacations at Hammond can be clean, who may remove the lock once the basins are cleaned

Back 92

Only John

Front 93

Something that appears to be fish eyes in a basin

Back 93

Sticky balls of polymer

Front 94

A Venturi meter is a common type of

Back 94

Differential Pressure Meter

Front 95

An operator is diligent about calculating contact time (CT) in his system he calculates this by measuring

Back 95

Contact Time, pH, temperature

Front 96

An operator needs to lower the pH for coagulation so they feed

Back 96

Ferric chloride

Front 97

Filters require backwash when

Back 97

Filters reach Max Head loss

Front 98

How do we read lead Action Levels (AL)

Back 98

. 015 @ 90th percentile

Front 99

What factors influence (CT values) for inactivation of organisms

Back 99

Time, pH, and temperature

Front 100

When chlorine is added what happens to the pH?

Back 100

Decreases (goes down)

Front 101

Free chlorine acts as a

Back 101

Buffer

Front 102

If you use a sacrificial anod what kind of protection are we practicing?

Back 102

Cathodic Protection

Front 103

How do we know when to backwash?

Back 103

Head loss

Front 104

If you use a Multimeter and get a reading across the top and bottom

Back 104

The fuse is good

Front 105

Two most common devices to protect operators in electrical

Back 105

Breakers and fuses

Front 106

What form is used to see how a pump will perform

Back 106

Pump Curve

Front 107

Best type of mechanical backflow preventers

Back 107

RPZ (reduced pressure zone)

Front 108

Customer complains of black particles in water claims she can smear between fingers. What could be the cause

Back 108

Braided steel risers

Front 109

Three characteristics of a confined space (must have all 3 to be considered confined space)

Back 109

> is large enough to get the whole body inside

> is not designed for human occupation

> has limited or restricted entrance or exit

Front 110

Source water protection plan contains what information

Back 110

All potential contaminants

Front 111

What do algae blooms do to pH?

Back 111

Decreases pH

Front 112

Chlorine IDCH ( immediately dangerous to life and health)

Back 112

10ppm

Front 113

When using green or rapid sand to remove insolubles what are those insolubles

Back 113

Iron Fe and manganese Mn

Front 114

Coagulant that when added to water will decrease pH

Back 114

Ferric chloride

Front 115

What happens when you have too much flock on top of your filters

Back 115

Clogges up filters

Front 116

How do we evaluate our filter process

Back 116

Influent and effluent turbidity

Front 117

Micro and ultra membrane filters remove

Back 117

Microorganisms

Front 118

If you are using caustic soda for corrosion control or softening what element do you have to monitor closely?

Back 118

Calcium

Front 119

What instrument is used for comparing and measuring amount of light going through a liquid

Back 119

Spectrocrometer

Front 120

What are you checking for when you titrate sulfuric acid to lower pH to 4.5

Back 120

Alkalinity

Front 121

What is the most common error in Laboratory Testing

Back 121

Improper technique/ human error

Front 122

When going out to take a bacti sample what should be taken first

Back 122

Chlorine residual

Front 123

What terms do we measure hardness in

Back 123

CaCO3 mg/L

Front 124

What is a streaming current meter

Back 124

Continuous online meter

Front 125

Systems that exceed the lead Action level must monitor

Back 125

Water quality parameters

Front 126

SWPP addresses what issues

Back 126

Potential Contaminates

Front 127

Which is a trihalomethanes (THM) precursors?

Back 127

Algae blooms

Front 128

Measured by the amount of sulfuric acid required to lower the pH 4.5

Back 128

Alkalinity

Front 129

When using a Multimeter to check fuses in line with the load connected and it reads across any fuse, that fuse is:

Back 129

Good

Front 130

Water flowing into a basin flows along a nearly direct pathway from the inlet to the outlet

Back 130

Short circuiting

Front 131

Electrical system for prevention of rust corrosion and pitting

Back 131

Cathodic Protection