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Calscience Environme a1 Laboratories, Inc. <br /> Analytical Quality Control Report <br /> Client: Environmental Audit, Inc <br /> Work Order No - 92-07-022 Reviewed by: <br /> Method. EPA 8015M (solid) {DOHS Method) ) <br /> Date(s) QC Analyzed: 07106-07/92 Date Reviewed. 1—/J�/92 <br /> Page- 6 of 12 <br /> Matrix Spike and Spike Replicate Results <br /> [Spike] Replicate Control Limit Control Limit <br /> Analyte fSamplel Added [Matrix Spike] %REC [Matrix Spike] %REC %REC %RPD %RPD <br /> Total Petroleum Hydrocarbons ND 400 376 94 371 93 70 - 130 1 0- 20 <br /> Total Petroleum Hydrocarbons ND 400 372 93 367 92 70 - 130 1 0- 20 <br /> Total Petroleum Hydrocarbons ND 400 372 93 388 97 70 - 130 4 0- 20 <br /> i <br /> I <br /> I <br /> Page 6 of 12 notes <br /> 1 All concentration values contained herein are in mg/kg (ppm) <br />