AL Pipelines Practice Questions - Alabama Pipelines Contractor Examination Exam

Which backfill is appropriate around an underground storage tank?

Clean, washed, free-flowing material such as pea gravel or sand, as specified by the tank manufacturer Native clay spoil containing rocks and debris Crushed concrete rubble from the demolition Frozen soil compacted in thick lifts

Correct Answer:

Clean, washed, free-flowing material such as pea gravel or sand, as specified by the tank manufacturer

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