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4rCaiscience Environ a1 Laboratories, Inc. <br /> Analytical Quality Control Report <br /> Client: Environmental Audit, Inc. ;t <br /> Work Order No.: 93-02-330 Reviewed by: �, U <br /> Method: EPA 8015M (Solid) {DHS Method) <br /> Date(s) Analyzed: 03102-08193 <br /> Page. 1 of 5 Date Reviewed: —L/-LLL/-94 <br /> Matrix Spike andSpike Replicate Results <br /> [Spike] Replicate Control Limit Control Limit <br /> Analyte_ [Sample] Added [Matrix Spike l %REC Matrix Spike] %REC °1°REC °°RPD %RPD <br /> Total Petroleum <br /> Hydrocarbons 14D 20 24 120 2 1 105 70 - 130 13 0-20 <br /> Total Petroleum <br /> Hydrocarbons ND 20 1 7 85 1 9 95 70- 130 11 0-20 <br /> Total Petroleum <br /> Hydrocarbons ND 20 1 8 90 1 8 90 70 - 130 0 0-20 <br /> Total Petroleum <br /> Hydrocarbons ND 20 1 6 80 1 6 80 70 - 130 0 0-20 <br /> Total Petroleum <br /> Hydrocarbons ND 20 24 120 24 120 70 - 130 0 0-20 <br /> Page 1 of 5 notes* <br /> 1 All concentration values contained herein are in mg/kg (ppm) <br />