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GUMS Volatile <br />Technical Case Narrative <br />Lawrence Livermore National Labs (LLNL) <br />SDG #: 410337 <br />Product: Volatile Organic Compounds (VOC) by Gas Chromatograph/Mass Spectrometer <br />Analytical Method: SW846 8260B <br />Analytical Procedure: GL -OA -E-038 REV# 23 <br />Analytical Batches: 1616839 and 1617364 <br />Preparation Method: SW846 5030 RECEIVED <br />Preparation Procedure: GL -OA -E-038 REV# 23 <br />Preparation Batch: 1617291 <br />The following samples were analyzed using the above methods and analytical procedure(s). FEB 0 9 2017 <br />GEL Sample ID# <br />Client Sample Identification <br />410337001 <br />W356453 <br />410337002 <br />W356456 <br />410337003 <br />TB 110716DV <br />1203671606 <br />Method Blank (MB) <br />1203671607 <br />Laboratory Control Sample (LCS) <br />1203671608 <br />41017600 1 (NonSDG) Post Spike (PS) <br />1203671609 <br />410176001(NonSDG) Post Spike Duplicate (PSD) <br />1203672842 <br />Method Blank (MB) <br />1203672843 <br />High Blank (HB) <br />1203672844 <br />Laboratory Control Sample (LCS) <br />1203672845 <br />410337001(W356453) Post Spike (PS) <br />1203672846 <br />410337001(W356453) Post Spike Duplicate (PSD) <br />The samples in this SDG were analyzed on an "as received" basis. <br />Data Summary: <br />ENVIRONMENTAL HEALTH <br />DEPARTMENT <br />All sample data provided in this report met the acceptance criteria specified in the analytical methods and <br />procedures for initial calibration, continuing calibration, instrument controls and process controls where <br />applicable, with the following exceptions. <br />Quality Control (QC) Information <br />Blank (MB) Statement <br />Target analytes were detected in the blank 1203672842 (MB) below the reporting limit. <br />Matrix Spike/Matrix Spike Duplicate Recovery Statement <br />Preservation by acidification causes 2-Chloroethylvinyl ether to degrade resulting in poor recoveries in samples <br />(See Below). <br />Sample <br />Analyte <br />Value <br />1203671608 (Non SDG 410176001PS) <br />2-Chloroethylvinyl ether <br />0* (51%-118%) <br />1203671609 (Non SDG 410176001 PSD) <br />2-Chloroethylvinyl ether <br />0* (51%-118%) <br />Page 9 of 56 <br />