WA UST Site Assessor Exam Questions with Correct Answers 2026

WA UST Site Assessor Exam Questions
with Correct Answers 2026

What G is Gthe G hold Gtime G for G soil Gand Gpreserved G GW G GRO Gsamples? G - GCORRECT G ANSWER
G -14 G days



Is Gan GICC Gcertification Gneeded G to Ginstall Gan GAST? G- GCORRECT G ANSWER G-No



Flammability Glimits Gof Ggasoline G- GCORRECT GANSWER G-1.4 Gto G 7.6%



How Gmany Gdays Gdo Gyou Ghave Gfrom Ga Gtank Gclosure Gto Greport/provide Gthe GUST Gchecklist
Gto GECY? G- GCORRECT GANSWER G-30 Gdays




MTCA GMethod G A G lead G CUL, G soil G - GCORRECT G ANSWER G -250 G mg/kg



MTCA GMethod G A G lead G CUL, G GW G- G CORRECT G ANSWER G -15 G ug/L



Is Gthe Gvadose Gzone Gsaturated Gor Gunsaturated? G- G CORRECT GANSWER G-Unsaturated



List Gin Gorder Gof Gmost Gmobile Gto Gleast Gmobile: GBunker GC, Gheating Goil, Gdiesel,
Ggasoline G- GCORRECT GANSWER G-Gasoline, Gdiesel, Gheating Goil, GBunker GC




Is Goxygenated Ggasoline Gmore Gor Gless Glikely Gto Gdissolve Gin Gwater? G- GCORRECT
GANSWER G- GMore Glikely; Gfuel Gadditives Glike GMTBE Gare Gmore Gsoluble Gthan
Ggasoline




Where Gto Gsample Gon Gdispenser? G - GCORRECT GANSWER G-2 Gfeet Gbelow Gwhere Gthe G piping
G enters G the G UST



Where Gto G sample Galong Gpiping? G - GCORRECT GANSWER G-Every G50 G linear Gfeet G and Galong
G joints/elbows




How Gmany GGW Gsamples Gare Gneeded Gafter Gdecommissioning Gif Ga Grelease Gto GGW Gis

, Gconfirmed, Gand Gwhere Grelative Gto Gthe Gtank? G- GCORRECT GANSWER G-3; G1 Gupgradient, G2
Gdowngradient