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A - Value reported is the mean of two or more determinations B - Results based on colony counts outside the acceptable range. C - Value calculated D - Indicates field measurements E - Indicates extra samples taken at composite stations 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 determinations; results may not be accurate I - Value reported is less than the minimum quantitation limit, and greater than or equal to the minimum detection limit. J - Estimated value; value not accurate K - Actual value is known to be less than the value given. L - Actual value is known to be greater than the value given. M - Presence of material verified but not quantified. In the case of temperature or oxygen reduction potential, M indicates a negative value. In the case of species, M indicates male sex N - Presumptive evidence of presence of material. O - Sampled, but analysis lost or not performed. 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 criterion of detection. U - Material was analyzed for not detected; the value reported is the minimum detection limit. V - Analyte was detected in both sample and method blank. W - Value observed is less than lowest value reportabls under “T” X - Value is quasi vertically-intergrated sample Y - Labortory 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.