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G alscience <br /> i�n vironmen tal <br />' 6 aborat ries Inc. <br />' QUALITY ASSURANCE SUMMARY <br /> Method EPA 602 <br /> Environmental Audit, Inc Work Order No 94-06-454 <br /> Page 1 of 1 Date Analyzed 07/01/94 <br /> Matrix Spike/Matrix Spike Duplicate <br /> Sample Spiked 94-06-457-6 <br /> Control Control <br /> Analyte MS%REC MSD%REC Limits %RPD Limits <br /> Benzene 100 100 65- 120 0 0 - 20 <br /> Chlorobenzene 105 100 65- 120 5 0 - 20 <br /> Ethylbenzene 105 100 65 - 120 5 0 - 20 <br /> Surrogate Recoveries (in %) <br /> s1 <br /> 94-06-454-1 110 <br /> 94-06-454-2 111 <br />' Acceptable Limits <br /> S1 > 1,4-Bromofluorobenzene 65- 135 <br /> Reviewed and approved ~ on !/�11994 <br /> Wi lam H Christensen <br /> Deliverables Manager <br /> 11631 Seaboard Circle, Stanton, CA 90680 TEL (714} 895-5494 FAX (714} 894-7501 <br />