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i �■1� �� � � � � � � t• � � t♦ � t��� t� <br /> Calscience Envlronme al Laboratories, Inc. <br /> Analytical Quality Control Report <br /> Client: Environmental Audit, Inc. <br /> Work Order No : 92-07-022 Reviewed by: v _ <br /> Method: EPA 8240T <br /> Date(s) QC Analyzed: 07/10/92 Date Reviewed: �_I14192 <br /> Page: 8 of 12 <br /> i <br /> Surrogate Recoveries <br /> Laboratory <br /> 1D Number, S1 S2 S3 Status <br /> 92-07-022-16 51 Note 1 115 108 UNSAT <br /> 92-07-022-19 74 105 96 SAT <br /> Water %REC Soil %REC <br /> Surrogate Compound Control Limits Control Limits <br /> S1 > 1,2-Dichloroethane-d4 70 - 130 70 - 130 <br /> S2 > Toluene-de 70 - 130 70 - 130 <br /> S3 > 4-Bromofluorobenzene 70 - 120 70 - 130 <br /> Page 8 of 12 notes <br /> 1 One out of six surrogates fell out of range Since previous and subsequent surrogates fell within range, this is considered to be a random occurrence <br />