REHS Practice Exam 1

Most concerns about noise as a pollutant have focused on the:

• home
• school
• community
• worksite

In general, noise levels are directly related to the

• population density
• proximity of airports
• number of "boom boxes" sold
• industrialization of an are

A given individual will most easily tolerate noise when

• the source of the noise is considerable inevitable
• the individual is the source of the noise
• the source of the noise is from construction
• the individual feels noting can be done about it

The measure that is used to determine the loudness of a sound is

• Hertz
• Decibel
• Frequency
• Amplitude

Some studies indicate that swimmers have a high over-all illness rate than do non-swimmers:

• regardless of bathing water quality
• due to poor regulatory practice
• if they are over 50 years of age
• if they swim in pools

Swimming pools receive fecal waste, urine, dead tis sue, saliva, mucous from the nose, sweat, and pol lution and contaminates from the surrounding envi ronment. This emphasizes the importance of proper swimming pool design including:

• recirculation
• filtration and proper disinfection
• proper operation
• all of the above

A pool filtration system should filter the entire calculated volume of water every:

• 2 to 3 hours
• 6 to 8 hours
• 10 to 12 hours
• 12 to 24 hours

The preferred method of controlling sewage from watercraft is the use of

• on-board holding tanks
• overboard discharge
• incinerator toilet
• compost toilet

Water in wading pools should be completely recirculated every ___________________________.

• 60 minutes
• 90 minutes
• 6 hours
• 24 hours

The bottom multiple-use pools should have a bottom slope not greater than _____________.

• 3" per 12"
• 5" per 12"
• 1" per 12"
• 2" per 12"