Pay formation
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- A layer or deposit of soil or rock whose value is sufficient to justify excavation.
Bureau of Reclamation - Cite This Source - This Definition - Common excavation, Earth lining, Excavation, Exploit, Foundation, Grubbing, Lift, Overexcavation, Overhaul, pass, Pipe trench, Shoring, Spoil, Swell, Unclassified excavation, Wastebank