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I Laboratories, Inc. <br /> Calscience Envlronme a <br /> Analytical Quality Control Report <br /> Client- Environmental Audit, Inc RECEIVLD <br /> Work Order No.: 92-07-022 Reviewed by <br /> Method AA Metals (Solids) AUG 4 19K <br /> Date(s) QC Analyzed 07/06/92 [-NVIRCNMENrALAlJ))II Date Reviewed. _�!��J92 <br /> Page: 1 of 12 <br /> i <br /> Matrix Spike and Spike Replicate Results <br /> [Spike] Replicate Control Limit Control Limit <br /> Analyte Method Sam le Added [Matrix Spike! %REC [Matrix Spike! %REC %REC %RPD %RPD <br /> Antimony 7040 70 - 130 0-20 <br /> Arsenic 7060 60- 120 0- 20 <br /> Barium 7080 60 - 120 0- 20 <br /> Beryllium 7091 60 - 120 0- 20 <br /> Cadmium 7130 80 - 130 0- 20 <br /> Chromium (Total) 7190 80 - 130 0 - 20 <br /> Cobalt 7200 70 - 120 0 - 15 <br /> Copper 7210 80 - 130 0 - 20 <br /> Lead 7420 6 68 20 25 8 96 23 9 86 70 - 130 11 0-30 <br /> Organic Lead 7420 70 - 130 0 - 30 <br /> Mercury 7471 70 - 115 0- 15 <br /> Molybdenm 7480 60 - 120 0- 15 <br /> Nickel 7520 80 - 130 0- 30 <br /> Selenium 7740 60 -120 0- 20 <br /> Silver 7760 80 - 120 0- 12 <br /> Thallium 7840 70 - 120 0 - 15 <br /> Vanadium 7910 60- 120 0- 20 <br /> Zinc 7950 70 - 130 0- 30 <br /> Page 1 of 12 notes <br /> 1 All concentration values contained herein are in mg/kg (ppm) <br />