Description:

The time a test is performed (calculated hydrologic parameter information), the time a measurement is taken (groundwater level or Environmental Measurement data) or sample is collected, a field test performed, or a field quality control sample is generated (environmental sampling information).  Note that LOGTIMES must be consistent between Normal samples (N) and any associated derived QC samples (e.g., MS, (FD, FR, SD, LR or RD).