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Laboratory name and address. <br /> Sample information (including unique sample identification, sample <br /> collection date and time, date of sample receipt, and date(s) of sample <br /> preparation and analysis) . <br /> Analytical results reported with an appropriate number of significant <br /> figures. <br /> Detection limits that reflect dilutions, interferences, or correction for <br /> equivalent dry weight. <br /> Method reference. <br /> Appropriate QC results (correlation with sample batch should be traceable <br /> and documented) . <br /> Data qualifiers with appropriate references and narrative on the quality <br /> of the results. <br /> 4.5 QUALITY ASSURANCE REVIEW <br /> The QA review consists of internal and external assessments to ensure that <br /> QA/QC procedures are in use and to ensure that laboratory staff conform to these <br /> procedures. QA review should be conducted as deemed appropriate and necessary. <br /> 4.6 LABORATORY RECORDS <br /> Records provide the direct evidence and support for the necessary technical <br /> interpretations, judgements, and discussions concerning project activities. <br /> These records, particularly those that are anticipated to be used as evidentiary <br /> data, should directly support technical studies and activities, and provide the <br /> historical evidence needed for later reviews and analyses. Records should be <br /> legible, identifiable, and retrievable, and protected against damage, <br /> deterioration, or loss. The discussion in this section (4.6)_ outlines <br /> recommended procedures for record keeping. Organizations which conduct field <br /> sampling should develop appropriate record keeping procedures which satisfy <br /> relevant technical and legal requirements. <br /> Laboratory records generally consist of bound notebooks with prenumbered <br /> pages, personnel qualification and training forms, equipment maintenance and <br /> calibration forms, chain-of-custody forms, sample analysis request forms, and <br /> analytical change request forms. All records should be written in indelible ink. <br /> Procedures for reviewing, approving, and revising laboratory records should <br /> be clearly defined, with the lines of authority included. Any documentation <br /> errors should be corrected by drawing a single line through the error so that it <br /> remains legible and should be initialed by the responsible individual , along with <br /> the date of change. The correction is written adjacent to the error. <br /> ONE - 21 Revision 1 <br /> July 1992 <br />