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- Sample Storage <br /> Groundwater samples collected in the field are stored in an ice chest cooled to 4 °C <br /> while in transit to the office Or ored in a <br /> eekendsaand holidays. The rl laboratory. efrigerator atores are tiis set to 4 <br /> refrigerator overnight and during le custodian. <br /> °C and is locked with access controlled by a designated satrap <br /> -- Quality Assurance/Quality <br /> Control Objectives <br /> ocedures employed by RESNA for groundwater sampling <br /> The sampling and analysis pr guidelines. Quality <br /> and monitoring follow quality assurance/quality control (QA/QC) for <br /> assurance objectives have been established <br /> d field data to developand <br /> anpaccu ate prlement ecise s and <br /> obtaining and evaluating water quality rovide <br /> complete manner. In this way, sampling procedures and field measurements p <br /> information that is comparable and representative ry ocolsaander field <br /> nions. Quality <br /> g the analytical <br /> control (QC) is maintained by site-spec <br /> ific filaboratory to perforin internal and external QC and representative.goal <br /> s tThe definitionsas <br /> are accurate, precise, complete, comp <br /> � developed by overseeing federal, state, and local agency guidance documents for <br /> accuracy, precision, completeness,comparability, and representativeness are: <br /> • Accuracy — the �:legree of agreement of a measurement with an <br /> accepted reference of.true value. <br /> • Precision —a measure of agreement <br /> exong pressed i individual <br /> of the standard <br /> under similar conditions. Usually p <br /> deviation <br /> _.. Comp 1 e t e n s s m come valid <br /> compared to the amountobtained data <br /> that was e <br /> spected to meet <br /> measurement ss <br /> P <br /> the project data goals. <br /> Comparability.--express the confidence with which one data set can <br /> be compared to another. <br /> . Representativeness — a sample or group of samples that reflect the <br /> characteristics of the media at the sampling point. It also includes how <br /> well the sampling point represents the actual parameter variations which <br /> are under study. <br /> RESNA INLUSTRIES,INC- <br /> Groundwater Sampling Protocol <br /> Latest Revision: October 23,1991 <br />