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D1 State Route 160 – Blasting east of Mt. Potosi is scheduled to resume Friday, Oct. 19. The road will close at 12:45 p.m. and the closure could last up to two hours. Please check back here for new notifications.

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Materials Sampling and Testing Frequencies

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Minimum Required Samples and Tests

The NDOT Construction Division requires that every material incorporated into the project must be tested and accepted based on a sampling frequency for testing in order to ensure that quality materials are incorporated into the work and to meet federal requirements. These frequencies have been established based on what is necessary to help ensure consistency of the material quality.

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Independent Assurance (IA)

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