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Nov 0111111111111111i i <br /> CaISClence Environme tal Laboratories, Inc. <br /> Analytical Quality Control Report <br /> Client- Environmental Audit, Inc. <br /> Work Order No. 92-07-022 Reviewed by: <br /> Method: EPA 8020 <br /> Date(s) QC Analyzed- 07/09/92 Date Reviewed: —"L/0—/J <br /> Page: 4 of 12 <br /> Matrix Spike and Spike Replicate Results <br /> {Spike] Replicate Control Limit Control Limit <br /> Analyte ISamplel Added [Matrix Spike] %REC (Matrix Spike] %REC %REC %RPD %RPD <br /> Toluene 5 20 16 80 16 80 70 - 130 0 0-20 <br /> Chlorobenzene ND 20 18 90 19 95 70 - 130 5 0- 20 <br /> Ethylbenzene 2 20 17 85 18 90 70 - 130 6 0- 20 <br /> i <br /> Page 4 of 12 notes <br /> 1 All concentration values contained herein are in ug/kg (ppb) <br />