WA UST Site Assessor Exam Questions and Answers Graded A
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Course
NURSING 706
Institution
NURSING 706
WA UST Site Assessor Exam Questions and Answers Graded A
What is the hold time for soil and preserved GW GRO samples?
Is an ICC certification needed to install an AST?
Flammability limits of gasoline
How many days do you have from a tank closure to report/provide the UST checklist to ECY?
MTCA...
WA UST Site Assessor Exam Questions and
Answers Graded A
1). What is the hold time for soil and preserved gw gro samples?
Ans: 14 days
2). Is an icc certification needed to install an ast?
Ans: No
3). Flammability limits of gasoline
Ans: 1.4 to 7.6%
4). How many days do you have from a tank closure to report/provide the ust checklist to ecy?
Ans: 30 days
5). Mtca method a lead cul, soil
Ans: 250 mg/kg
6). Mtca method a lead cul, gw
Ans: 15 ug/L
7). Is the vadose zone saturated or unsaturated?
Ans: Unsaturated
8). List in order of most mobile to least mobile: bunker c, heating oil, diesel, gasoline
Ans: Gasoline, diesel, heating oil, Bunker C
9). Is oxygenated gasoline more or less likely to dissolve in water?
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, Ans: More likely; fuel additives like MTBE are more soluble than gasoline
10). Where to sample on dispenser?
Ans: 2 feet below where the piping enters the UST
11). Where to sample along piping?
Ans: Every 50 linear feet and along joints/elbows
12). How many gw samples are needed after decommissioning if a release to gw is confirmed,
and where relative to the tank?
Ans: 3; 1 upgradient, 2 downgradient
13). What vapor is an fid used to measure?
Ans: Methane
14). What is a pid measuring?
Ans: Mixture of all volatiles
15). What conditions might impede a pid?
Ans: Moisture/humidity, dust, transformers, power lines
16). What ust capacity does not require a site assessment at closure?
Ans: Less than 110 gallons
17). Purpose of a site check
Ans: To investigate a UST site for the presence of a release when evidence indicated
that a release may have occurred
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