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• case narrative <br /> • chain-of-custody (COC) documentation (external) <br /> final analyte concentration including reporting limit, laboratory qualifiers, and <br /> reanalyses <br /> laboratory sample ID, field sample ID, location, matrix, and dilution factors <br /> • sample receipt, extraction, and analysis dates for holding time verification <br /> percent recovery of each surrogate <br /> Relative Percent Difference (RPD)for all Matrix Spike/Matrix Spike Duplicate <br /> (MS/MSD) results <br /> • percent recovery of each compound in the MS sample <br /> laboratory control sample results when analyzed <br /> blank results for method blanks <br /> In addition to the hard-copy report requirements, the laboratory will provide electronic <br /> deliverables. <br /> A1.3 Data Validation <br /> Data validation is the process of reviewing data and accepting, qualifying, or rejecting <br /> data on the basis of sound criteria using established U.S. EPA guidelines. All data <br /> generated during the sampling activities that are subjected to analytical Level III <br /> protocols will also be validated. LFR will perform independent data validation. The data <br /> validation approach will consist of a systematic review of the analytical results, <br /> associated QC methods and results, and all of the supporting data. Best professional <br /> judgment in any area not specifically addressed by U.S. EPA guidelines will be utilized <br /> as necessary and described in the Usability Assessment portion of the data validation <br /> report. <br /> A1.3.1 Data Validation Protocols <br /> Data will be validated according to guidelines set forth in the following sources: <br /> "National Functional Guidelines for Organic Data Review Multi-Media, Multi- <br /> Concentration, ILMO 1.0 and Low Concentration Water, OLCO 1.0, EPA/540/R- <br /> 94/090," ("National Functional Guidelines"), U.S. EPA, December 1994. <br /> • "National Functional Guidelines for Inorganic Data Review Multi-Media, Multi- <br /> Concentration, ILMO 1.0 and Low Concentration Water, OLCO 1.0, EPA/540/R- <br /> 94/091," ("National Functional Guidelines'), U.S. EPA, December 1994. <br /> • "Soil Sampling and Analysis for Volatile Organic Compounds," EPA/504/4-91/001, <br /> February 1991, <br /> Sampling Plan for Small Waste Disposal Areas(final).doc A_2 <br />