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Primary Activity Category

Note: EPA no longer updates this information, but it may be useful as a reference or resource.

This web site provides query access to over 200 million monitoring records originally reported to EPA via the Legacy STORET System.

Code Name
C Effluent Permit Condition
V Effluent (Sample)
L Biological
J Tissue
S Spatial Composite
T Temporal Composite
B Both Spatial and Temporal Composite
F Flow Proportional
G Grab Sample
D Replicate

STORET Data Access

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