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� Emb <br /> • � � Ili � � � I♦ � � � �� � <br /> Caiscience Environmel al Laboratories, Inc. <br /> Analytical Quality Control Report <br /> Client: Environmental Audit, Inc <br /> Work order No 92-07-022 Reviewed by <br /> Method. EPA 8240 <br /> Date(s) QC Analyzed. 07/17/92 Date Reviewed. _a_I_�,L192 <br /> Page 11 of 12 <br /> Matrix Spike and Spike Replicate Results <br /> [Spike] Replicate Control Limit Control Limit <br /> Analyte fSamplel Added [Matrix Spike] %REC jMatrix Spike] %REC %REC %RPD %RPD <br /> Benzene ND 50 50 100 50 100 65 - 130 0 0- 25 <br /> Chlorobenzene ND 50 51 102 53 106 70 - 130 4 0- 25 <br /> Toluene ND 50 52 104 52 104 70 - 130 0 0- 25 <br /> 1,1-Dichloroethene ND 50 59 118 55 110 65 - 130 7 0- 25 <br /> Trichloroethene ND 50 50 100 50 100 65 - 130 0 0- 26 <br /> Page 11 of 12 notes <br /> 1 All concentration values contained herein are in ug/kg (ppb) <br /> I <br />