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WA UST Site Assessor Exam Questions And Answers With Verified Solutions 100% Correct!!!
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WA UST Site Assessor Exam Questions And Answers With Verified Solutions 100% Correct!!!
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WA UST Site Assessor Exam QuestionsAnd Answers With Verified Solutions
100% Correct!!!
How long should written documentation of all calibration maintenance, and repair
of release detection equipment be maintained? - ANSWER✔✔ At least 5 years
after servicing work is completed
What is the hold time for soil samples? - ANSWER✔✔ 14 days
What is the hold time for preserved GW GRO samples? - ANSWER✔✔ 14 days
What does GRO stand for? - ANSWER✔✔ Gasoline Range Organics
Is an ICC certification needed to install an AST? - ANSWER✔✔ No
What does ICC stand for? - ANSWER✔✔ International Code Council
What is the LFL of Gasoline? - ANSWER✔✔ 1.4%
What is the UFL of Gasoline? - ANSWER✔✔ 7.6%
After a tank closure, how many days do you have to report/provide the UST
checklist to ECY? - ANSWER✔✔ 30
,What is ECY an abbreviation for? - ANSWER✔✔ The Washington State
Department of Ecology
What does CUL stand for? - ANSWER✔✔ Cleanup Level
What is the MTCA Method A lead CUL for soil? - ANSWER✔✔ 250 mg/kg
What is the MTCA Method A lead CUL for GW? - ANSWER✔✔ 15 ug/L
What does MTCA stand for? - ANSWER✔✔ Model Toxics Control Act
What is the MTCA? - ANSWER✔✔ Washington'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? -
ANSWER✔✔ 100 mg/kg
What is the MTCA Method A GRO (with benzene) CUL for soil? - ANSWER✔✔
30 mg/kg
What is the MTCA Method A GRO (with benzene) CUL for GW? - ANSWER✔✔
800 ug/L
What are MTCA Method A cleanup levels? - ANSWER✔✔ The 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? -
ANSWER✔✔ 1,000 ug/L
What is the MTCA Method A DRO and ORO CUL for soil? - ANSWER✔✔ 2,000
mg/kg
What is the MTCA Method A DRO and ORO CUL for GW? - ANSWER✔✔ 500
ug/L
Is the vadose zone saturated or unsaturated? - ANSWER✔✔ Unsaturated
List the following from most mobile to least mobile: Diesel, Heating Oil, Bunker C
oil, Gasoline - ANSWER✔✔ Gasoline, diesel, heating oil, Bunker C oil
What is the vadose zone? - ANSWER✔✔ The portion of the subsurface above the
GW table.
Is oxygenated gasoline more or less likely to dissolve in water? - ANSWER✔✔
More likely
Why is oxygenated gasoline more likely to dissolve in water? - ANSWER✔✔ Fuel
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? - ANSWER✔✔ 3
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