WA UST SITE ASSESSOR (2024-2025) EXAM
What conditions might impede a PID? -
<<,Answersw>>>Moisture/humidity, dust,
transformers, power lines
What UST capacity does not require a site assessment
at closure? - <<,Answersw>>>Less than 110 gallons
Purpose of a site check - <<,Answersw>>>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 - <<,Answersw>>>To
investigate a UST site at the time of closure or change-
in-service to determine if a release has occurred
When is a UST considered "empty"? -
<<,Answersw>>>When all materials have been
removed so that no more than 2.5 cm (or 1 inch) or
residue, or 0.3% by weight of the total capacity of the
UST system remain in the system
What additional requirements are applied when a UST
system is temporarily closed for 3 months or more? -
<<,Answersw>>>Leave vent lines open and
, WA UST SITE ASSESSOR (2024-2025) EXAM
functioning; cap and secure all other lines, pumps,
entryways, and ancillary equipment; tightness tested by
a certified UST supervisor
When should a temporarily closed tank be permanently
closed by a certified UST supervisor? -
<<,Answersw>>>After 12 months of temporary closure
When should any active permits be returned to the
department for temporarily closed tanks? -
<<,Answersw>>>Within 30 days of completion of
temp. closure activities
How long from notification does a certified site assessor
have to complete the permanent tank closure? -
<<,Answersw>>>Within 60 days after expiration of the
30-day notice
How long does the site assessor have to sign the UST
decommissioning checklist following completion of a
UST installation, retrofit, decommissioning, or test? -
<<,Answersw>>>30 days
What conditions might impede a PID? -
<<,Answersw>>>Moisture/humidity, dust,
transformers, power lines
What UST capacity does not require a site assessment
at closure? - <<,Answersw>>>Less than 110 gallons
Purpose of a site check - <<,Answersw>>>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 - <<,Answersw>>>To
investigate a UST site at the time of closure or change-
in-service to determine if a release has occurred
When is a UST considered "empty"? -
<<,Answersw>>>When all materials have been
removed so that no more than 2.5 cm (or 1 inch) or
residue, or 0.3% by weight of the total capacity of the
UST system remain in the system
What additional requirements are applied when a UST
system is temporarily closed for 3 months or more? -
<<,Answersw>>>Leave vent lines open and
, WA UST SITE ASSESSOR (2024-2025) EXAM
functioning; cap and secure all other lines, pumps,
entryways, and ancillary equipment; tightness tested by
a certified UST supervisor
When should a temporarily closed tank be permanently
closed by a certified UST supervisor? -
<<,Answersw>>>After 12 months of temporary closure
When should any active permits be returned to the
department for temporarily closed tanks? -
<<,Answersw>>>Within 30 days of completion of
temp. closure activities
How long from notification does a certified site assessor
have to complete the permanent tank closure? -
<<,Answersw>>>Within 60 days after expiration of the
30-day notice
How long does the site assessor have to sign the UST
decommissioning checklist following completion of a
UST installation, retrofit, decommissioning, or test? -
<<,Answersw>>>30 days
