NGWA - Study Questions - Augering & Monitoring Well Latest Update 2025-2026 75 Questions and 100% Verified Correct Answers Guaranteed A+
A "travel blank" is a special sample vial that... - CORRECT ANSWER: ... contains ASTM Type II reagent water and is shipped to the laboratory with ground water samples that are to be tested for VOCs.
A disadvantage of using cable tool drilling for monitoring wells is... - CORRECT
ANSWER: ... possible problems in controlling heaving sands.
A flush mount well cover should have... - CORRECT ANSWER: ... concrete in the base.
A piezometer is... - CORRECT ANSWER: ... an instrument placed in the ground water used to measure pressure (head).
A poorly developed monitoring well can lead to which of the following? - CORRECT
ANSWER: 1. Low production rate.
- High turbidity.
- Non-representative ground water samples.
Air in the discharge line of a recovery well system could be caused by... - CORRECT
ANSWER: Hole in drop pipe
Cascading water Plugged screen and cavitation
An advantage of using hollow-stem augers is... - CORRECT ANSWER: ... no drilling fluid is used, eliminating contamination by drilling fluid additives. 1 / 2
An auger head uses... - CORRECT ANSWER: ... tungsten faced forged steel teeth.
Contamination from the cement grout leaking into the filter pack may be indicated by... -
CORRECT ANSWER: ... high pH.
Daily inspection of drilling equipment should include, but is not limited to... - CORRECT
ANSWER: Inspection of cable, hoses, etc.
All fluid levels First aid kit available
Different types of knock-out plugs are used when reaming holes. Which type is not
generally used? - CORRECT ANSWER: Flat low carbon steel.
Doubling the inside diameter of casing in a well will increase its cross sectional area
by... - CORRECT ANSWER: ... 4 times.
Due to the advanced technology, today's monitoring equipment and material... -
CORRECT ANSWER: ...
Federal Motor Carrier safety regulations require the driver of a CMV of 10,001 lbs.combined weight or over to have... - CORRECT ANSWER: ... a medical card and valid driver's license.
For drilling operations at a hazardous waste site, the exclusion zone is... - CORRECT ANSWER: ... the area on-site that is potentially contaminated and where workers must wear PPE as stipulated in the site specific health and safety plan.
Glacial drift is defined as... - CORRECT ANSWER: Unconsolidated sediment
transported by glaciers and disposed and deposited directly on land or sea.
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