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Case Narrative <br /> Client: PG&E Corporation TestAmerica Job ID:720-33540-1 <br /> Project/Site: 124 North East Street ISolidNVipe <br /> Job ID.! 720-33540-1 <br /> Laboratory:TestAmerica San Francisco <br /> Narrative <br /> Job Narrative <br /> 720-33540-1 <br /> Comments <br /> No additional comments. <br /> Receipt { <br /> All samples were received in good condition within temperature requirements. <br /> GC Semi VOA <br /> Method(s)8082:Surrogate recovery for the following sample(s)was outside control limits:NE-15(720-33540-2). Evidence of matrix <br /> interference is present:therefore,re-extraction and/or re-analysis was not performed. <br /> Method(s)8082:Due to the high concentration of AR 1254,the matrix spike!matrix spike duplicate(MS/MSD)for batch 86730 could not be <br /> evaluated for accuracy and precision for AR 1260 due to overlapping patterns.. The associated laboratory control sample(LCS)met <br /> acceptance criteria. <br /> Method(s)8082:Due to the level of dilution required for the following sample(s),surrogate recoveries are not reported:NE-10 <br /> (720-33540-18),NE-11 (720-33540-19),NE-9(720-33540-17). <br /> Method(s)8082:Due to the level of dilution required for the following sample(s),surrogate recoveries are not reported:NE-19 <br /> (720-33540-6),NE-20(720-33540-7),NE-21(720-33540-8). <br /> No other analytical or quality issues were noted. <br /> I <br /> Organic Prep <br /> No analytical or quality issues were noted. <br /> i <br /> 1 <br /> I <br /> I <br /> TestAmerica San Francisco <br /> Page 4 of 22 02/28/2011 <br /> I <br />