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1455 McDowell Blvd,North Ste <br /> Sequoia Petaluma,CA 949544 <br /> ID (707)792-1865 <br /> Analytical FAX(707)792-0342 <br /> www sequoialabs corn <br /> URS Corp-Sacramento Project Arco Site 2168,Stockton,CA P402290 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number WR36590 Reported <br /> Sacramento CA,95833 Project Manager Vernon P Elarth 02/26/0415 43 <br /> Notes and Definitions <br /> Q-29 The percent recovery in the quality control analyte exceeded the upper control limit Because there was no detectable amount of <br /> this compound in the associated sample,the result has been reported <br /> Q-LIM The percent recovery was outside of the control limits The samples results may still be useful for their intended purpose <br /> QM-4X The spike recovery was outside of control limits for the MS and/or MSD due to analyte concentration at 4 times or greater the <br /> spike concentration The QC batch was accepted based on LCS and/or LCSD recoveries within the acceptance limits <br /> QR-07 The RPD was outside control limits The results may still be useful for their intended purpose <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 /> Sequoia Analytical-Petaluma The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document Unless otherwise stated results are reported on a wet weight <br /> basis This analytical report must be reproduced in its entirety <br /> Page 15 of 15 <br />