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1455 McDowell Blvd North Ste D <br /> SequoiaPctalum t,CA 94954 <br /> (D— (707)792-1865 <br /> Analytical PAX(707)792-0342 <br /> www scquoial-ihs core <br /> • <br /> URS Corp-Sacramento Project Arco Site 5469,Stockton CA P403099 <br /> 2870 Gateway Oaks Drive Suite 300 Protect Number WR36605 Reported <br /> Sacramento CA 95833 Projett;Manager Jay Johnson 04/06/04 17 16 <br /> Notes and Dellnitions <br /> 0172 Confirmatory analysis was past holding time <br /> E The concentration indicated for this analyte is an estimated value above the calibration range of the instrument <br /> HC-19 Discrete peak. r?C5 <br /> HT-04 This sample was analyzed beyond the EPA recommended holding time The results inay still be useful for their intended purpose <br /> HT-RA This sample was originally analyzed within the EPA recommended hold time Rc-analysis for confirmation or dilution was <br /> performed past the recommended hold time The results may still be used for their intended purpose <br /> QBO k The method blank contains this analyte at a concentration above the reporting limit however the concentration is less than 5%of <br /> the sample result which is negligible,according to method criteria <br /> QC01 The percent recovery was above the control limits The sample results may still be useftil for their intended purpose <br /> QC20 The RPD was outside control limits The result,,may still be useful for their intended purpose <br /> QC21 The RPU result exceeded the control limits,however,both percent recoveries were acceptable Sample results for the QC batch <br /> were accepted based on percent recd cries and completeness of QC data <br /> OMO I The spine recovery was above control limits for the MS and/or MSD The batch was accepted based on acceptable LCS recovery <br /> QM02 The spike recovery was below control limits for the MS and/or MSD The batch was accepted based on acceptable LCS recovery <br /> QM04 The spike recovery was above control Iunits for the MS and/or MSD due to analyte concentration at 4 times or greater the spike <br /> concentration The QC batch was accepted based on LCS and/or LCSD recoveries within the acceptance limits <br /> R-01 The Reporting Limit for this analyte has been raised to account for matrix interference <br /> S02 The surrogate recovery was below control limits The result may still be usetul for its intended purpose <br /> 7QM07 The spikL recovery was outside control limits for the MS and/or MSD The batch was accepted based on acceptable LCS <br /> recovery <br /> DET Analyte DFTECTED <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 M-itive Percent Difference <br /> uoia Analytical-Petaluma Thi i estdts it,this r epor r apple to the samples uitahzed in accorduirc a i,ith the chair <br /> ofeil+toihitocunient L'irlessutlrcrsirsestuteit iesrihsaieieporreilnnavie, Keight <br /> bays Tirrs anati rrcu!repot t iinrsr he ri pr r>ducerl rn its entriets <br /> Page 35 of 35 <br />