NM CID GF-4 Practice Questions - New Mexico CID GF-4 Drainage Or Flood Control Systems Contractor Examination Exam

A project benchmark is:

A temporary paint mark on the blade of the motor grader The lowest invert on the storm-drain profile A point of known elevation, and usually horizontal position, from which other grades are established The station of the first culvert only

Correct Answer:

A point of known elevation, and usually horizontal position, from which other grades are established

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