NM CID GF-3 Practice Questions - New Mexico CID GF-3 Canals, Reservoirs Or Irrigation Systems Contractor Examination Exam

Before placing a concrete or geomembrane liner in an existing canal, the contractor must usually:

Leave the canal in service so the liner can be placed underwater Dewater the prism, remove sediment and vegetation, and prepare a stable, graded subgrade Fill the canal with extra water to check freeboard Skip compaction because water will settle the subgrade later

Correct Answer:

Dewater the prism, remove sediment and vegetation, and prepare a stable, graded subgrade

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