Table Name: TRI_FACILITY_NPDES_HISTORY

Description: Historical representation of the permit number of a specific discharge to a water body under the National Pollutant Discharge Elimination System (NPDES) of the Clean Water Act (CWA). Not all facilities will have a NPDES permit number. A facility may have multiple NPDES permit numbers. The NPDES permit number may not pertain to the toxic chemical reported to TRI. (Data in TRI_FACILITY_NPDES_HISTORY were submitted on EPA Form R or Form A, Part I, Section 4, 'Facility Identification'. See speci fic 'Data Source' for each column.)

Relationships:

Must represent historical NPDES data for one and only one TRI_FACILITY_HISTORY related by column TRI_FACILITY_ID.

Columns:

ASGN_NPDES_IND
NPDES_NUM
REPORTING_YEAR
TRI_FACILITY_ID

Definition Source: TRI Program Division

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Table Name: TRI_FACILITY_NPDES_HISTORY

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