Information provided for informational purposes only

Note: This information is provided for reference purposes only. Although the information provided here was accurate and current when first created, it is now outdated.


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


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Composite Method
Code Description Name
C Samples collected continuously Continuous
G Samples are collected as a grab. The number comprising the sample may or may not be reported. If the number comprising the sample is reported the number will be stored in the Composite Grab Number column of the Sample table. Grab
B Samples are not collected continuously or as a grab. STORET used this code for replicate samples. None of the above