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Determine the number of samples needed to test compliance of cleanup activities. The preliminary data at the time of the cleanup were: 40, 47, 47.5

Determine the number of samples needed to test compliance of cleanup activities. The preliminary data at the time of the cleanup were: 40, 47, 47.5 and 55 ppm in soil. The regulatory threshold (RT) is 50 ppm. Use the EPA SW-846 methods.

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