NM CID GF-5 Practice Questions - New Mexico CID GF-5 Recreation Areas Contractor Examination Exam

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On a park grading job, when should downslope perimeter sediment controls such as silt fence or fiber rolls be installed?

After rough grading so the fence line is easier to see Before soil-disturbing activities so they intercept sediment from the first runoff Only after the first rain that produces a visible discharge Only along the upslope property line

Correct Answer:

Before soil-disturbing activities so they intercept sediment from the first runoff

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