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Book 1 Ch 2 - Source Water, Reservoir Mgmt., Intake Structures Practice Quiz 1

front 1

A condition where surface waters warm rapidly, expand, and become lighter
than the lower, colder waters is called?

back 1

Thermal stratification

front 2

What are the three major water quality indicators that effect the efficiency of
copper sulfate as an algicide?

back 2

Alkalinity, algae species, and outdoor temperature

front 3

According to the SDWA, a Public Water System is one that:

back 3

Has at least 15 service connections and serves an average of 25 people daily for at least 60 days per year

front 4

Items essential to a sanitary survey include identification of potential hazards, the determination of factors that affect water quality and which other condition?

back 4

•The amount of process waste products

•The demand of the finished water product

•Hiring of qualified operators

•The selection of treatment requirements

front 5

If a lake has a surface area of 5 acres, what is the surface area as square feet?

back 5

217,800 sq ft

front 6

Convert 9,785,500 cubic feet to gallons

back 6

73,195,540 gallons

front 7

Aeration and Re-aeration are methods of what?

back 7

Reservoir destratification

front 8

A disagreeable rotten egg odor noticed in a groundwater source is caused by what?

back 8

Hydrogen sulfide

front 9

How many Nephelometric Turbidity Units (NTU) will produce a water that is usually objectionable for aesthetic reasons?

back 9

5.0 NTU

front 10

Soft water, turbidity, suspended solids and microbial contamination are characteristics of what raw water source?

back 10

Surface water

front 11

Increases and decreases of a lake or reservoir pH during daylight hours are caused by what?

back 11

Photosynthesis

front 12

What Act was signed into law on December 16, 1974?

back 12

The Safe Drinking Water Act (SDWA)

front 13

What is the most common primary algicide used in domestic water reservoirs?

back 13

Copper sulfate pentahydrate

front 14

What is an advantage of single-level intake structures?

back 14

They are less costly to operate and maintain

front 15

There are three basic rights to the use of water. Riparian and Prescriptive are two of the rights to the use of water, what is the third?

back 15

Appropriative

front 16

Who should conduct a new water supply sanitary survey?

back 16

Persons trained in public health engineering

front 17

Objectionable tastes and odors, shortened filter runs, fluctuating pH, dissolved oxygen depletion are all attributed to what?

back 17

Aquatic algal blooms