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EF/ICR logo Column Name: SAMP_PER



Description: Sampling Period (1-18). Initial Sampling Plan is period zero and Final Sampling Plan is period 19. Sampling Periods 1-18 represent the monthly sampling period in which the samples were collected. Sampling period 1 started in July of 1997.

Envirofacts Table Name: TUXSAMPLE

Data Source:

Properties:

Definition Source: Data Element Dictionary for the Information Collection Rule Auxiliary 1 Database.



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