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1455 McDowell Blvd,North Ste D <br /> 4DSequoia Petaluma CA 94954 <br /> (707)792-1865 <br /> �r Analytical wwseqAX(707)792-0342 <br /> om <br /> www sequolalabs cam <br /> URS Corp-Sacramento Project Arco Site 2130,Stockton,CA P406495 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number Intrim-50293 Reparted <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 07/29/04 17 56 <br /> Notes and Definitions <br /> S02 The surrogate recovery was below control limits The result may still be useful for its intended purpose <br /> R-01 The reporting limit for this analyte has been raised to account for matrix interference <br /> QM01 The spike recovery was above control limits for the MS and/or MSD The batch was accepted based on acceptable LCS recovery <br /> QC21 The RPD result exceeded the control limits,however,both percent recoveries were acceptable Sample results for the QC batch <br /> were accepted based on percent recoveries and completeness of QC data. <br /> QCO2 The percent recovery was below the control limits The sample results may still be useful for their intended purpose <br /> QC01 The percent recovery was above the control limits The sample results may still be useful for their intended purpose <br /> CC04 The continuing calibration verification was outside of client contractual acceptance limits by 3 2%high However,it was within <br /> method acceptance limits The data should still be useful for its intended purpose <br /> DET Analyte DETECTED <br /> ND Analyte NOT DETECTED at or above the reporting limit or MDL if MDL is specified <br /> NR Not Reported <br /> dSample results reported on a dry weight basis <br /> Wry <br /> RPD Relative Percent Difference <br /> Sequoia Analytical-Petaluma The results in this report apply to the samples analyzed 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 /> Page 40 of 41 <br />