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Sequoia 1455 McDowell Blvd North Ste D <br /> Petaluma CA 94954 <br /> (707)792-1865 <br /> Analytical FAX(707)792-0342 <br /> www sequoialabs corn <br /> URS Corp-Sacramento Project Arco Site 6100,Tracy,CA P402493 <br /> 2870 Gateway Oaks Drive Suite 300 Project Number WR36619 Reported <br /> Sacramento CA,95833 Project Manager Jay Johnson 03/17/04 15 30 <br /> Notes and Definitions <br /> HT-05 This sample was requested to be analyzed beyond the EPA recommended holding time The results may be useful for their <br /> intended purpose <br /> PES1 The recovery for this analyte reflects a post-extraction addition of the spiking solution This was necessary due to an interference <br /> from the sample matrix <br /> QC07 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 /> 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 /> zQ1,IM The percent recovery was outside of the control limits The samples results may still be useful for their intended purpose <br /> DET Analyte DETECTED <br /> ND Analyte NOT DETECTED at or above the reporting limn <br /> NR Not Reported <br /> dry Sample results reported on a dry weight basis <br /> 10D Relative Percent Difference <br /> oia 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 an a wet weight <br /> basis This analytical report must be reproduced to its entirety <br /> Page 25 of 25 <br />