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WA UST SITE ASSESSOR COMPREHENSIVE EXAM 2026 QUESTIONS WITH SOLUTIONS GRADED A+

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WA UST SITE ASSESSOR COMPREHENSIVE EXAM 2026 QUESTIONS WITH SOLUTIONS GRADED A+

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WA UST SITE ASSESSOR COMPREHENSIVE
EXAM 2026 QUESTIONS WITH SOLUTIONS
GRADED A+


◉ 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

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