A UST Site Assessor UPDATED Exam Questions and CORRECT Answers
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Course
A UST Site Assessor
Institution
A UST Site Assessor
A UST Site Assessor UPDATED Exam
Questions and CORRECT Answers
What is the hold time for soil and preserved GW GRO samples? - CORRECT ANSWER- 14
days
Is an ICC certification needed to install an AST? - CORRECT ANSWER- No
Flammability limits of gasoline - CORRECT ANSWER- 1.4 to 7.6%
How many...
A UST Site Assessor UPDATED Exam
Questions and CORRECT Answers
What is the hold time for soil and preserved GW GRO samples? - CORRECT ANSWER- 14
days
Is an ICC certification needed to install an AST? - CORRECT ANSWER- No
Flammability limits of gasoline - CORRECT ANSWER- 1.4 to 7.6%
How many days do you have from a tank closure to report/provide the UST checklist to
ECY? - CORRECT ANSWER- 30 days
MTCA Method A lead CUL, soil - CORRECT ANSWER- 250 mg/kg
MTCA Method A lead CUL, GW - CORRECT ANSWER- 15 ug/L
Is the vadose zone saturated or unsaturated? - CORRECT ANSWER- Unsaturated
List in order of most mobile to least mobile: Bunker C, heating oil, diesel, gasoline -
CORRECT ANSWER- Gasoline, diesel, heating oil, Bunker C
Is oxygenated gasoline more or less likely to dissolve in water? - CORRECT ANSWER-
More likely; fuel additives like MTBE are more soluble than gasoline
Where to sample on dispenser? - CORRECT ANSWER- 2 feet below where the piping enters
the UST
Where to sample along piping? - CORRECT ANSWER- Every 50 linear feet and along
joints/elbows
, How many GW samples are needed after decommissioning if a release to GW is confirmed,
and where relative to the tank? - CORRECT ANSWER- 3; 1 upgradient, 2 downgradient
What vapor is an FID used to measure? - CORRECT ANSWER- Methane
What is a PID measuring? - CORRECT ANSWER- Mixture of all volatiles
What conditions might impede a PID? - CORRECT ANSWER- Moisture/humidity, dust,
transformers, power lines
What UST capacity does not require a site assessment at closure? - CORRECT ANSWER-
Less than 110 gallons
Purpose of a site check - CORRECT ANSWER- To investigate a UST site for the presence of
a release when evidence indicated that a release may have occurred
Purpose of a site assessment - CORRECT ANSWER- To investigate a UST site at the time of
closure or change-in-service to determine if a release has occurred
Site check vs. site assessment - CORRECT ANSWER- A site check is an investigation of a
UST site for a release when evidence indicates that one many have occurred; a site
assessment determines if a release has occurred
If a confirmed release is identified and reported within 24 hours, what is and is not required?
- CORRECT ANSWER- A site assessment is not required; a site characterization is required
What is the historical date before which a UST system may have been permanently closed or
abandoned that ECY may require a site assessment? - CORRECT ANSWER- December 22,
1988
When should a site safety plan be developed? - CORRECT ANSWER- Prior to conducting
the UST site assessment
What is included under "Level D" PPE? - CORRECT ANSWER- Steel toe boots, cotton
coveralls, hardhat, eye protection
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