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Sequ��, <br /> 680 Chesapeake Drive Redwood CitQ94063 (415) 364.9600 FAX(4 15) 36i-9233 <br /> 4114 N. Lane Walnut Cfetk, CA 94598 (j 10) 988-9600 FAX(SIO) 968-9673 <br /> Analytica 19 Striker Avtnuc,Suite 8 Sacramento, CA 95834 (915) qzt-moo FAX(916)92 i-Omo <br /> ... ......... <br /> X <br /> X <br /> Brown 8L Caldwell Client Project"ID., o 5450, Sf66kcton <br /> X. <br /> 9616 Micron Ave., Suite 6()0 Matrix: Soil <br /> Sacramento, CA 95827 <br /> .1 <br /> .'Attention: Steve Misner QC Sample Group 5100252-265 <br /> Reported: Oct 19, 1995i'�:i <br /> X. X. <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> Benzene ',Toluene Benzene Xylenes <br /> Method: EPA 8020 EPA 8020 EPA 6020 EPA 8020 <br /> Analyst: V.Owens V.Owens V.Owens V.Owens <br /> Concentration <br /> Spiked: 0.20 mg/kg 0.20 mg/kg 0.20 mg/kg 0.60 mg/kg II <br /> LCS; Batch#: LCS101895 LCS101895 LCS101895 LCS101895 <br /> Date Prepared: 10/18/95 1:0/16/95 10/18/95 10/18/95 <br /> Date Analyzed: 10/18/95 1-0/18/95 10/18/95 10/18/95 <br /> Instrument I.D.#-. GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br /> LCS % <br /> Recovery: 98 99 98 98 <br /> Control Limits: 75-125 :75-125 75-125 75-125 <br /> X. <br /> ........ ... <br /> .. ....... <br /> ...... ... . <br /> . ....... ... . X. ...... <br /> —BL <br /> MS/MSD <br /> Batch#: 5100663 <br /> 5100663 5100663 5100663 <br /> Date Prepared: 10/18/95 10/18/95 10/18/95 10/18/95 <br /> Date Analyzed: 10/18/95 10/18/95 10/18/95 10/18/95 <br /> Instrument I.D.#: GCHP-1 GCHP-1 GCHP-1 GCHP-1 <br /> Matrix Spike <br /> % Recovery: 86 1 86 84 89 <br /> Matrix Spike <br /> Duplicate % <br /> Recovery: 97 100 98 92 <br /> Relative % <br /> Difference: 12 is 15 3.3 II <br /> SEQUOIA ANALYTICAL Please Note: <br /> The LCS is a control sample of known,interferent free matrix that is analyzdd using the same reagents, <br /> preparation and analytical methods employed for the samples. The LCS%recovery data is used for <br /> ' <br /> validation of sample batch results. Due to matrix effects,the QC limits for MS/MSO s are advisory only <br /> Janet Wflan and are not used to accept or reject batch results. <br /> Project Manager <br /> 5100252.BRS <7> <br />