Name_________________________________________ Date________________ Period_______
Ch 22 Water Pollution Calculative Questions
1. The water pollution from a slaughterhouse in which one ton of cattle was processed each day produced a daily
biochemical oxygen demand (BOD) of 10.5 kg? Calculate the human population equivalent (how many people) that it
would take to produce the same daily BOD as this slaughterhouse. Each person produces an average of 0.07 kg of
BOD per day. (Easy)
a) 1
b) 11
c) 15
d) 150
e) 1,500
2. An asphalt parking lot measures 100 m by 500 m. Calculate how much storm water runoff, in gallons, will be
created following a storm which produced 2 cm of rain. Conversion factors 1 cubic meter (m 3) = 1000 liters, 1 gallon
= 3.79 liters (approx). Round to the nearest gallon. (Easy)
a) 2,274 gallons
b) 50,000 gallons
c) 158,316 gallons
d) 263,852 gallons e) 26,385,224 gallons
3. In 1998, the U.S. Environmental Protection Agency (EPA) evaluated data from 1368 U.S. watersheds. They found
that sediments in 7% of watersheds are so contaminated that consuming fish from these watersheds would potentially
threaten human health. Calculate the total number of contaminated watersheds. (Easy)
a) 1,464
b) 1,272
c) 957
d) 9
e) none of the above
Name_________________________________________ Date________________ Period_______
Ch 22 Water Pollution Calculative Questions
1. The water pollution from a slaughterhouse in which one ton of cattle was processed each day produced a daily
biochemical oxygen demand (BOD) of 10.5 kg? Calculate the human population equivalent (how many people) that it
would take to produce the same daily BOD as this slaughterhouse. Each person produces an average of 0.07 kg of
BOD per day. (Easy)
a) 1
b) 11
c) 15
d) 150
e) 1,500
2. An asphalt parking lot measures 100 m by 500 m. Calculate how much storm water runoff, in gallons, will be
created following a storm which produced 2 cm of rain. Conversion factors 1 cubic meter (m3) = 1000 liters, 1 gallon
= 3.79 liters (approx). Round to the nearest gallon. (Easy)
a) 2,274 gallons
b) 50,000 gallons
c) 158,316 gallons
d) 263,852 gallons e) 26,385,224 gallons
3. In 1998, the U.S. Environmental Protection Agency (EPA) evaluated data from 1368 U.S. watersheds. They found
that sediments in 7% of watersheds are so contaminated that consuming fish from these watersheds would potentially
threaten human health. Calculate the total number of contaminated watersheds. (Easy)
a) 1,464
b) 1,272
c) 957
d) 9
e) none of the above
4. Leaking underground petroleum storage tanks are a common pollutant to the nation’s groundwater. At present,
there are an estimated 250,000 underground storage tanks that may be leaking at service stations in the United
States. Cleanup of these leaking gas tanks can cost up to $500,000 per tank. Calculate the approximate cost per
person (given that the current U.S population is 303,490,694 people) if we were to cleanup all potential leaking tanks
this year. (Medium)
a) $412
b) $824
c) $1.13
d) $41.87
e) none of the above
5. Wastewater usually undergos several treatments to prevent environmental and public health problems. Nationwide,
11% of the U.S. population has access to primary treatment only, 62% have access to both primary and secondary
treatments, and 27% have access to primary, secondary and tertiary treatments. Given that the current U.S.
population is approximately 303.5 million people, calculate approximately how many more people have access to all
three forms of wastewater treatment versus primary treatment only. (Easy)
a) 485 thousand
b) 48.5 million
c) 81.9 million
d) 33.4 million
e) none of the above
4. Leaking underground petroleum storage tanks are a common pollutant to the nation’s groundwater. At present,
there are an estimated 250,000 underground storage tanks that may be leaking at service stations in the United
States. Cleanup of these leaking gas tanks can cost up to $500,000 per tank. Calculate the approximate cost per
person (given that the current U.S population is 303,490,694 people) if we were to cleanup all potential leaking tanks
this year. (Medium)
a) $412
b) $824
c) $1.13
d) $41.87
e) none of the above
5. Wastewater usually undergos several treatments to prevent environmental and public health problems. Nationwide,
11% of the U.S. population has access to primary treatment only, 62% have access to both primary and secondary
treatments, and 27% have access to primary, secondary and tertiary treatments. Given that the current U.S.
population is approximately 303.5 million people, calculate approximately how many more people have access to all
three forms of wastewater treatment versus primary treatment only. (Easy)
a) 485 thousand
b) 48.5 million
c) 81.9 million
d) 33.4 million
e) none of the above
Name_________________________
Date____________
Period_______
#_______
Ch 22 Water Pollution Calculative Questions
1. The water pollution from a slaughterhouse in which one ton of cattle was processed each day produced a daily
biochemical oxygen demand (BOD) of 10.5 kg? Calculate the human population equivalent (how many people) that it
would take to produce the same daily BOD as this slaughterhouse. Each person produces an average of 0.07 kg of
BOD per day. (Easy)
a) 1
b) 11
c) 15
d) 150
e) 1,500
2. An asphalt parking lot measures 100 m by 500 m. Calculate how much storm water runoff, in gallons, will be
created following a storm which produced 2 cm of rain. Conversion factors 1 cubic meter (m3) = 1000 liters, 1 gallon
= 3.79 liters (approx). Round to the nearest gallon. (Easy)
a) 2,274 gallons
b) 50,000 gallons
c) 158,316 gallons
d) 263,852 gallons e) 26,385,224 gallons
3. In 1998, the U.S. Environmental Protection Agency (EPA) evaluated data from 1368 U.S. watersheds. They found
that sediments in 7% of watersheds are so contaminated that consuming fish from these watersheds would potentially
threaten human health. Calculate the total number of contaminated watersheds. (Easy)
a) 1,464
b) 1,272
c) 957
d) 9
e) none of the above
4. Leaking underground petroleum storage tanks are a common pollutant to the nation’s groundwater. At present,
there are an estimated 250,000 underground storage tanks that may be leaking at service stations in the United
States. Cleanup of these leaking gas tanks can cost up to $500,000 per tank. Calculate the approximate cost per
person (given that the current U.S population is 303,490,694 people) if we were to cleanup all potential leaking tanks
this year. (Medium)
a) $412
b) $824
c) $1.13
d) $41.87
e) none of the above
5. Wastewater usually undergos several treatments to prevent environmental and public health problems. Nationwide,
11% of the U.S. population has access to primary treatment only, 62% have access to both primary and secondary
treatments, and 27% have access to primary, secondary and tertiary treatments. Given that the current U.S.
population is approximately 303.5 million people, calculate approximately how many more people have access to all
three forms of wastewater treatment versus primary treatment only. (Easy)
a) 485 thousand
b) 48.5 million
c) 81.9 million
d) 33.4 million
e) none of the above