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alscience <br />' Znvironmental <br /> i6r aboratories, Inc. <br /> QUALITY ASSURANCE SUMMARY <br /> Method EPA 602 <br />' Environmental Audit, Inc Work Order No 94-09-242 <br /> Page 1 of 1 Date Analyzed 09/15/94 <br /> Matrix Spike/Matrix Spike Duplicate <br /> Sample Spiked 94-09-205-7 <br /> Control Control <br /> Anal a M$%REC MSD%REC Limits %RPD Limits <br /> Benzene 101 99 J 39 - 150 1 0 - 25 <br /> Toluene 101 101 46 - 148 0 0 - 25 <br /> Ethylbenzene 105 101 32 - 160 4 0 -25 <br />' Surro ate Recoveries in <br /> 9 ( ) <br />' S1 <br /> 94-09-242-1 961 <br /> 94-09.242-2 122 <br />' Acceptable Limits <br /> S1 > 1,4-Bromofl uo ro benzene 50- 140 <br /> Reviewed and approved on aL/2,L/1994 <br /> William H Christensen <br /> Deliverables Manager <br /> 11631 Seaboard Circle, Stanton, CA 90680 • TEL (714} 895-5494 • FAX (714) 894-7501 <br />