NM CID MS-3 Practice Questions - New Mexico CID MS-3 Cesspools, Septic Tanks And Sewers Examination Exam

Before aggregate or drain lines are placed, smeared or compacted trench surfaces must be:

Wetted and tamped with a plate compactor Coated with bentonite grout Raked to a depth of 1 inch and the loose material removed Lined with 6-mil polyethylene

Correct Answer:

Raked to a depth of 1 inch and the loose material removed

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