WA UST Site Assessor Exam Questions with solutions 2024
WA UST Site Assessor Exam Questions with solutions 2024 What is the hold time for soil and preserved GW GRO samples? - ANS ️️ 14 days Is an ICC certification needed to install an AST? - ANS ️️ No Flammability limits of gasoline - ANS ️️ 1.4 to 7.6% How many days do you have from a tank closure to report/provide the UST checklist to ECY? - ANS ️️ 30 days MTCA Method A lead CUL, soil - ANS ️️ 250 mg/kg MTCA Method A lead CUL, GW - ANS ️️ 15 ug/L Is the vadose zone saturated or unsaturated? - ANS ️️ Unsaturated List in order of most mobile to least mobile: Bunker C, heating oil, diesel, gasoline - ANS ️️ Gasoline, diesel, heating oil, Bunker C Is oxygenated gasoline more or less likely to dissolve in water? - ANS ️️ More likely; fuel additives like MTBE are more soluble than gasoline Where to sample on dispenser? - ANS ️️ 2 feet below where the piping enters the UST Where to sample along piping? - ANS ️️ Every 50 linear feet and along joints/elbows
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wa ust site assessor exam questions with solutions
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