WorksheetsGEOENVIRONMENTAL ENGINEERING - CONTAMINANT TRANSPORT
Total questions: 14
Worksheet time: 7mins
Seepage velocity concerns the...
Individual velocity of fluids in pores
Overall movement; or the rate of the fully saturated flow front
1 m/day is equal to
1.16 x 10^-3 cm/s
8.64 x 10^2 cm/s
Hydraulic gradient is dimensionless
Yes
No
What is Q, given the ff:
K = 1m/day
i = 0.1
A = 10 sq.m.
1 cu.m./day
10 cu.m./day
100 cu.m./day
What is hydraulic gradient i, given the ff:
dh = 5 m
dl = 100 m
0.05
20
0.05 m
20 m
Given the following numbers: 50, 10, 4, 90
what is their Greatest Common Factor (GCF)?
2
4
10
9
Benzene, toluene, ethylbenzene, and xylenes, often referred to collectively by the acronym...
BTEX
BENTO
MTBE
Which of the following is true regarding BTEX
Long-term exposure to benzene can cause anemia, decrease in blood platelets, and increased risk of cancer
BTEX together constitute up to 20% of the composition of gasoline
A & B
This method involves vacuuming vapors from the subsurface and is commonly used in organic contaminants
SVE
Pump and treat
Air Sparging
This metal is persistent, can bioaccumulate in the body over time, and thus toxic even at low levels of exposure.
Exposure to this metal also causes damage to nerve system, learning disabilities, shorter stature, impaired hearing, and damage to blood cells
Lead
Arsenic
Cyanosis (pic related) is caused by what Inorganic contaminant?
Nitrate and nitrites
Perchlorate
Lead
Arsenic
Perfluoroalkyl substances (PFASs) can be found in which of the following products?
Dessert and bread wrappers
Sandwich wrappers
Teflon
All of the above
1,4-dioxane (C4H8O2), also called dioxane, can be found in which of the following items?
Laundry detergent
Dish soaps
Shampoos
All of the above
This used to increase the Octane Rating of Gasoline and is highly soluble which makes it prone to leaching to groundwater via infiltration.
Methyl tert-butyl ether
Benzene
Ethylbenzene
Xylenes
