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 Although the information provided here was accurate and current when first created, it is now outdated.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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STORET Result Remark
Code Description
A Value reported is the mean of two or more determinations
B Results based upon colony counts outside the acceptable range
C Calculated. Value stored was not measured directly, but was calculated from other data available
D Field measurement. Some parameter codes (e.g., 401 "Field pH") imply this condition without this remark
E Extra sample taken in composting process
F In the case of species, F indicates Female sex
G Value reported is the maximum of two or more determinations
H Value based on field kit determination;results may not be accurate
I The value reported is less than the practical quantification limit and greater than or equal to the method detection limit
J Estimated. Value shown is not a result of analytical measurement
K Off-scale low. Actual value not known, but known to be less than value shown
L Off-scale high. Actual value not known, but known to be greater than value shown
Presence of material verified, but not quantified. Indicates a positive detection, at a level too low to permit accurate quantification. In the case of temperature or oxygen reduction potential, M =a negative value. In the case of species, M=male sex
N Presumptive evidence of presence of material
O Sampled for, but analysis lost. Accompanying value is not meaningful for analysis
P Too numerous to count
Q Sample held beyond normal holding time
R Significant rain in the past 48 hours
S Laboratory test
T Value reported is less than the criteria of detection
U Material was analyzed for, but not detected. Value stored is the limit of detection for the process in use. In the case of species, Undetermined sex
V Indicates the analyte was detected in both the sample and associated method blank
W Value observed is less than the lowest value reportable under remark "T"
X Value is quasi vertically-integrated sample
Y Laboratory analysis from unpreserved sample. Data may not be accurate
Z Too many colonies were present to count (TNTC), the numeric value represents the filtration volume
$ Calculated by retrieval software. Numerical value was neither measured nor reported to the database, but was calculated from other data available during generation of the retrieval report