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• <br /> Sequoia 680 Chcmpcakc Drive Redwood City,CA 94063*(415) 364.96DO <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 FAX(415)364-9233 <br /> (510) 988-9600 FAX(sio) <br /> WNW Analytical 819 Striker Avenue,Suite s Sacruncrito,CA 95834 (916) 921-9600 FAX(916988-9673 <br /> )921.oloo <br /> je'inf e0de' ...... <br /> 2825 East <br /> Myrtle St' Matrix: Soil <br /> Stockton CA 95205 <br /> 0 <br /> Aa! t n n. Ton <br /> QUALITY CONTROL DATA REPORT <br /> ANALYTE Ethyl- <br /> --- Toluene Benzene Xviena-n <br /> Method: EPA 8020 EPA 8020 EPA 8020 EPA 8020 <br /> Analyst: C.Lee C.Lee C.Lee C.Lee <br /> Concentration <br /> Spiked: 0.20 mg/kg 0.20 mg/kg 0.20 mg/kg 0.60 mg/kg <br /> LCS Batch#: LCS090497 LCS090497 LCS090497 LCS090497 <br /> Date Prepared: 09/04/97 09/04/97 09/04/97 09/04/97 <br /> Date Analyzed: 09/04/97 09/04/97 09/04/97 09/04/97 <br /> Instrument I.D.#: GGHP-i GCHP-1 GCHP-i GCHP-i <br /> LCS % <br /> Recovery: 115 106 108 107 <br /> Control Limits: 70-130 <br /> 70-130 70-130 70-130 <br /> Batch #: 7081109 7081109 7081109 7061109 <br /> Date Prepared: 09/04/97 09/04/97 09/04/97 09/04/97 <br /> Date Analyzed: 09/04/97 09/04/97 09/04/97 09/134/97 <br /> Instrument I.D.#: GCHP-i GCHP-1 GCHP-1 GCHP-i <br /> Matrix Spike <br /> %Recovery: 114 104 108 106 <br /> Matrix Spike <br /> Duplicate% <br /> Recovery: 114 104 108 106 <br /> Relative% <br /> Difference: 0.0 0.0 0.0 0.0 <br /> qEQU IAANALYTICAL Please Note. <br /> The LCS is a control sample of known <br /> reparation and analytical methods employed <br /> The LCS is a control Sample of known,interferent free Matrix that is analyzed using the Same reagents, <br /> ld 'r <br /> nel4c preparation and analytical methods employed for the samples. The LCS%recovery data is used for <br /> validation of sample batch results. Due to matrix effects,the OC limits for MS/MSD's are advisory only <br /> a C. Sch elder and are not used to accept o <br /> Project Manager/Sacramento Labor-a-FoT7� r reject batch results. — <br /> 7081107.KLF <3> <br />