WA UST SITE ASSESSOR EXAM ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS

WA UST SITE ASSESSOR EXAM ACTUAL 2025/2026 QUESTIONS AND 100% CORRECT ANSWERS What is the hold time for soil and preserved GW GRO samples? - Answer -14 days Is an ICC certification needed to install an AST? - Answer -No Flammability limits of gasoline - Answer -1.4 to 7.6% How many days do you have from a tank closure to report/provide the UST checklist to ECY? - Answer -30 days MTCA Method A lead CUL, soil - Answer -250 mg/kg MTCA Method A lead CUL, GW - Answer -15 ug/L Is the vadose zone saturated or unsaturated? - Answer -Unsaturated List in order of most mobile to least mobile: Bunker C, heating oil, diesel, gasoline - Answer -Gasoline, diesel, heating oil, Bunker C Is oxygenated gasoline more or less likely to dissolve in water? - Answer -More likely; fuel additives like MT