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885]ams ih <br /> 4DSequoia MQSan KiU,CA 95037 <br /> Analytical (408)776-9600 <br /> FAX(408)782-6308 <br /> www sequomlabs can <br /> f <br /> ronmental Inc Project ARCO#2130 MLL0779 <br /> on Park Dr,Saute 550 Project Number ARCO#2130,Stockton,CAReported <br /> rk CA,95582 Prof ect Manager Jay Johnson 01/10/03 16 20 <br /> Notes and Definitions <br /> A-01 The reporting level for TBA has been raised due to anstnunent contamination causing false positive results <br /> _A--IjD-' This sample contains a significant amount of 3-methyl-pentane which may give a false high result for MTBE by EPA methods <br /> utilizing GC analysts <br /> i/HT-04 This sample was analyzed beyond the EPA recommended holding time The results may still be useful for their intended purpose <br /> ✓L HT-RS This sample was originally analyzed within the EPA recommended hold time Re-analysis for confirmation or dilution was <br /> performed past the recommended hold time The results may still be useful for their intended purpose <br /> ✓✓R-05 The sample was diluted due to the presence of lugh levels of non-target analytes resulting in elevated repotting limits <br /> VS-04 The surrogate recovery for this sample is outside control limits due to interference from the sample matrix <br /> DET Analyte DETECTED <br /> ND Analyte NOT DETECTED at or above the reporting limit <br /> NR Not Reported <br /> dry Sample results reported on a dry weight basis <br /> RPD Relative Percent Difference <br /> �equoia Analytical-Morgan Hill The results in this report apply to the samples analysed in accordance with the chain of <br /> custody document Unless otherwise stated results are reported on a wet weight basis <br /> This analytical report must be reproduced in its entirety <br /> 17 of 17 <br />