WA UST Site Assessor Exam Questions With Correct Answers!!
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Course
WA UST Site Assessor
Institution
WA UST Site Assessor
How long should written documentation of all calibration maintenance, and repair of release detection equipment be maintained? - ANSWERAt least 5 years after servicing work is completed
What is the hold time for soil samples? - ANSWER14 days
What is the hold time for preserved GW GRO samples?...
WA UST Site Assessor Exam
Questions With Correct Answers!!
How long should written documentation of all calibration maintenance, and repair of
release detection equipment be maintained? - ANSWERAt least 5 years after
servicing work is completed
What is the hold time for soil samples? - ANSWER14 days
What is the hold time for preserved GW GRO samples? - ANSWER14 days
What does GRO stand for? - ANSWERGasoline Range Organics
Is an ICC certification needed to install an AST? - ANSWERNo
What does ICC stand for? - ANSWERInternational Code Council
What is the LFL of Gasoline? - ANSWER1.4%
What is the UFL of Gasoline? - ANSWER7.6%
After a tank closure, how many days do you have to report/provide the UST checklist
to ECY? - ANSWER30
What is ECY an abbreviation for? - ANSWERThe Washington State Department of
Ecology
What does CUL stand for? - ANSWERCleanup Level
What is the MTCA Method A lead CUL for soil? - ANSWER250 mg/kg
What is the MTCA Method A lead CUL for GW? - ANSWER15 ug/L
What does MTCA stand for? - ANSWERModel Toxics Control Act
What is the MTCA? - ANSWERWashington's cleanup act. It governs the cleanup
and prevention of contaminated sites that can threaten the health of people and the
environment.
What is the MTCA Method A GRO (without benzene) CUL for soil? - ANSWER100
mg/kg
What is the MTCA Method A GRO (with benzene) CUL for soil? - ANSWER30 mg/kg
What is the MTCA Method A GRO (with benzene) CUL for GW? - ANSWER800 ug/L
, What are MTCA Method A cleanup levels? - ANSWERThe default human health
cleanup levels for soil, groundwater, surface water, air, and vapor intrusion.
What is the MTCA Method A GRO (without benzene) CUL for GW? - ANSWER1,000
ug/L
What is the MTCA Method A DRO and ORO CUL for soil? - ANSWER2,000 mg/kg
What is the MTCA Method A DRO and ORO CUL for GW? - ANSWER500 ug/L
Is the vadose zone saturated or unsaturated? - ANSWERUnsaturated
List the following from most mobile to least mobile: Diesel, Heating Oil, Bunker C oil,
Gasoline - ANSWERGasoline, diesel, heating oil, Bunker C oil
What is the vadose zone? - ANSWERThe portion of the subsurface above the GW
table.
Is oxygenated gasoline more or less likely to dissolve in water? - ANSWERMore
likely
Why is oxygenated gasoline more likely to dissolve in water? - ANSWERFuel
additives like MTBE are more soluble than gasoline.
How many samples are needed during the removal of a UST of less than 9,000
gallons? - ANSWER3
Where do samples need to be collected during the removal of a UST of less than
9,000 gallons? - ANSWEROne beneath the tank, one where the piping entered the
sidewall, and one from another sidewall.
How many samples need to be collected during the removal of a UST of more than
9,000 gallons? - ANSWER?
Where do samples need to be collected during the removal of a UST of more than
9,000 gallons? - ANSWER?
How many samples need to be collected during the removal of multiple USTs? -
ANSWER5 samples for the first UST, 2 additional samples for each additional tank.
Where do samples need to be collected during the removal of multiple USTs? -
ANSWEREvenly spaced around the excavation and beneath each tank.
Where do you sample on the dispenser? - ANSWER2 feet below where the piping
enters the UST.
Where do you sample along the piping? - ANSWEREvery 50 linear feet and along
the joints/elbows.
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