Sample Handling and Tracking Sample Clauses

Sample Handling and Tracking. Immediately following sample collection, a unique tracking number will be annotated on the sample container. The sample numbers will be drawn from a single coherent numbering system based on sample type (biased, systematic, QA, or QC), grid number, horizontal location (in meters, referenced to the Massachusetts State Plane Coordinate (MPC) System, North American Datum 1983 (NAD 83), and sample depth below ground surface (in feet bgs). The sample numbers will appear as follows: VVVV-ZZ.Z-XXXX-YYYY-W-# Where: VVVV = the 4 digit grid identification number ZZ.Z = the sample’s depth (2 whole digits and 1 decimal digit) (in ft. bgs) XXXX = the last 4 whole number digits of the location’s easting value (in meters) YYYY = the last 4 whole number digits of the location’s northing value (in meters) W = either B (for Biased), S (for Systematic), A (for QA), or C (for QC) # = the sample’s sequential number at that particular horizontal and vertical location The sequential number will be used to ensure unique identifiers in cases where a sample must be repeated at the same horizontal and vertical location as a previous sample. In samples for which no repeats are obtained, this digit will be a 0. If such repeats are obtained, the first repeat will be designated 1, the second repeat will be designated 2, etc. For example, a biased sample, obtained 5.5’ bgs in grid 1189, at easting 222018 and northing 854840, would be numbered 1189-05.5-2018-4840-B-0. If that sample needed to be repeated, the following sample would be numbered 1189-05.5-2018-4840-B-1. A sample at the same horizontal location, obtained 17.0’ bgs, would be numbered 1189-17.0-2018-4840-B-0. Each sample will be entered into an electronic sample tracking system, in which each record will include the sample number, the date and time of collection, the name of the person collecting the sample, and the current location of the sample. This record will be updated as sample status changes (e.g., the sample is shipped to the laboratory).