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Technical Information <br /> Holding Time Specifications <br /> GEL assigns holding times based on the associated methodology, which assigns the date <br /> and time from sample collection of sample receipt. Those holding times expressed in <br /> hours are calculated in the A1phaLIMS system. Those holding times expressed as days <br /> expire at midnight on the day of expiration. All samples in this SDG met the specified <br /> holding time. <br /> Preparation/Analytical Method Verification <br /> All procedures were performed as stated in the SOP. <br /> Sample Dilutions <br /> Dilutions are performed to minimize matrix interferences resulting from elevated mineral <br /> element concentrations present in solid samples and/or to bring over range target analyte <br /> concentrations into the linear calibration range of the instrument. The samples required <br /> dilutions in order to bring sodium raw values within the linear range of the instrument, <br /> and for potassium that sodium interferes with, in order to ensure that the inter-element <br /> correction factors were valid. <br /> Preparation Information <br /> The samples in this SDG were prepared exactly according to the cited SOP. <br /> Miscellaneous Information <br /> Electronic Packaging Comment <br /> This data package was generated using an electronic data processing program referred to <br /> as virtual packaging. In an effort to increase quality and efficiency, the laboratory has <br /> developed systems to generate all data packages electronically. The following change <br /> from traditional packages should be noted: <br /> Analyst/peer reviewer initials and dates are not present on the electronic data files. <br /> Presently, all initials and dates are present on the original raw data. These hard copies are <br /> temporarily stored in the laboratory. An electronic signature page inserted after the case <br /> narrative will include the data validator's signature and title. The signature page also <br /> includes the data qualifiers used in the fractional package. Data that are not generated <br /> electronically, such as hand written pages, will be scanned and inserted into the electronic <br /> package. <br /> Data Exception (DER) Documentation <br /> Data exception reports (DERs) are generated to document procedural anomalies that may <br /> deviate from referenced SOP or contractual documents. A data exception report(DER) <br /> was not generated for this SDG. <br /> Additional Comments <br /> Page 22 of 86 <br />