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Case Narrative <br /> Client: United Pumping Service TestAmerica Job ID: 440-212315-2 <br /> Project/Site: UPRR-Stockton MR-572 Onespot <br /> Job ID: 440-212315-1 <br /> Laboratory: TestAmerica Irvine <br /> , <br /> Narrative <br /> Job Narrative <br /> 440-212315-1 <br /> Comments <br /> No additional comments. <br /> Receipt <br /> The sample was received on 5/29/2018 2:50 PM;the sample arrived in good condition, properly preserved and,where required, on ice. <br /> The temperature of the cooler at receipt was 3.4°C. <br /> GC/MS VOA <br /> Method(s)8260B: Surrogate recovery for the following sample was outside control limits:4-Bromofluorobenzene is high. UPSTKMR-572 <br /> (440-212315-1). Re-extraction and/or re-analysis was performed with concurring results. The re-analysis has been reported. <br /> Method(s)8260B: Internal standard (ISTD)response for the following sample was outside control limits: 1,4-Dichlorobenzene-d4 and <br /> Chlorobenzene-d5 are low. UPSTKMR-572(440-212315-1). The sample(s)was re-extracted and/or re-analyzed with concurring results, <br /> and the re-analysis has been reported. <br /> Method(s)8260B: Surrogate 4-Bromofluorobenzene recovery was outside the upper control limits for the following matrix spike/matrix <br /> spike duplicate(MS/MSD)samples: (440-211870-B-4 MS)and (440-211870-B-4 MSD). The parent sample's surrogate recovery was <br /> within limits. The MS/MSD sample has been qualified and reported. Matrix interference was suspected. <br /> Method(s)8260B:The matrix spike/matrix spike duplicate(MS/MSD) recoveries for the following sample associated with analytical batch <br /> 440-479957 were outside control limits: (440-211870-B-4 MS)and (440-211870-B-4 MSD). The associated laboratory control sample <br /> (LCS)recovery met acceptance criteria. <br /> Method(s)8260B:The matrix spike/matrix spike duplicate(MS/MSD)precision for analytical batch 440-479957 was outside control limits. <br /> Sample matrix interference and/or non-homogeneity are suspected. <br /> Method(s)8260B: Internal standard (ISTD)response for Fluorobenzene the following sample was outside control limits: UPSTKMR-572 <br /> (440-212315-1). The sample(s)was re-extracted and/or re-analyzed with concurring results, and the original set of data has been <br /> reported. <br /> Method(s)8260B: Surrogate recovery for 4-Bromofluorobenzene, Dibromofluoromethane, and Toluene-d8 the following sample was <br /> outside control limits: UPSTKMR-572(440-212315-1). Re-extraction and/or re-analysis was performed with concurring results.The <br /> original analysis has been reported. <br /> No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. <br /> GC VOA <br /> Method(s)801513: Surrogate recovery for the following sample was outside control limits: UPSTKMR-572(440-212315-1). Re-analysis <br /> was performed with concurring results. This analysis has been reported. <br /> No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. <br /> GC Semi VOA <br /> Method(s)8015B:The 8015-DRO method blank for preparation batch 440-479159 and analytical batch 440-479235 contained C10-C28 <br /> above the method detection limit. This target analyte concentration was less than the reporting limit(RL);therefore, re-extraction and/or <br /> re-analysis of samples was not performed. <br /> No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. <br /> Metals <br /> Method(s)601 OB:The matrix spike/matrix spike duplicate(MS/MSD) recoveries of Antimony for preparation batch 440-479766 and <br /> analytical batch 440-481158 were outside control limits.The associated laboratory control sample(LCS) recovery was within acceptance <br /> TestAmerica Irvine <br /> Page 4 of 32 6/19/2018 <br />