NM CID GF-1 Practice Questions - New Mexico CID GF-1 Airports Contractor Examination Exam

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Per the EPA CGP, sediment that has accumulated against a perimeter control such as a silt fence must be removed before it reaches which height?

The top of the fence fabric, regardless of height One-quarter of the above-ground height of the perimeter control One-half of the above-ground height of the perimeter control The full height of the control plus 6 inches of freeboard

Correct Answer:

One-half of the above-ground height of the perimeter control

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