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Case Narrative <br /> Client: Conestoga-Rovers&Associates, Inc. TestAmerica Job ID: 720-65573-1 <br /> Project/Site: TUSD/080238 <br /> Job ID: 720-65573-1 <br /> Laboratory:TestAmerica Pleasanton <br /> Narrative <br /> Job Narrative <br /> 720-65573-1 <br /> Comments <br /> No additional comments. <br /> Receipt <br /> The samples were received on 6/19/2015 3:15 PM;the samples arrived in good condition, properly preserved and,where required, on ice. <br /> The temperature of the cooler at receipt was 8.6°C. <br /> Receipt Exceptions <br /> The times on 4 samples did not match the coc. B-21-0.5 time on jar was 11:50 Time on coc 11:30. B-21-5 time on jar was 12:OOTime on <br /> coc 11:40. B-22-0.5 time on jar was 11:30 Time on coc 11:50. B-22-5 time on jar was 11:40 Time on coc 12:00. Corrected sample times <br /> on the samples per container time. <br /> GUMS VOA <br /> Method 8260B: Internal standard(ISTD) response for the following samples were outside control limits: B-22-0.5(720-65573-5)and <br /> CONCRETE-1 (720-65573-7). The samples were re-analyzed with concurring results, and the second set of data has been reported. <br /> Method 8260B:The following volatiles sample was diluted due to matrix at the time of purging during the original sample analysis: <br /> B-22-0.5(720-65573-5). Elevated reporting limits(RLs)are provided. <br /> No additional analytical or quality issues were noted, other than those described above or in the Definitions/Glossary page. <br /> GC VOA <br /> No analytical or quality issues were noted,other than those described in the Definitions/Glossary page. <br /> GC Semi VOA <br /> Method 80158:The following samples required a dilution due to the nature of the sample matrix: B-20-0.5(720-65573-1), <br /> (720-65573-B-1-GMS), (720-65573-B-1-HMSD), B-21-0.5(720-65573-3), B-22-0.5(720-65573-5), B-22-5(720-65573-6),CONCRETE-1 <br /> (720-65573-7)and CONCRETE-2(720-65573-8). Because of this dilution,the surrogate spike concentration in the sample was reduced <br /> to a level where the recovery calculation does not provide useful information. <br /> Method 8082:The following sample appears to contain polychlorinated biphenyls(PCBs); however,due to weathering or other <br /> environmental processes,the PCBs in the sample do not closely match any of the laboratory's Aroclor standards used for instrument <br /> calibration: B-21-0.5(720-65573-3). The sample has been quantified and reported as Aroclor 1260. Due to the poor match with the <br /> Aroclor standard,there is increased qualitative and quantitative uncertainty associated with this result. <br /> No additional analytical or quality issues were noted,other than those described above or in the Definitions/Glossary page. <br /> Organic Prep <br /> No analytical or quality issues were noted,other than those described in the Definitions/Glossary page. <br /> TestAmerica Pleasanton <br /> Page 4 of 31 6/23/2015 <br />