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COLUMBIA ANALYTICAL SERVICES,INS. <br /> QA/QC Report <br /> Client: Equiva Services Service Request: 59902059 <br /> Project: SAP:121258/lncident:88870583 Date Collected: NA <br /> Sample Matrix: Soil Date Received: NA <br /> Date Prepared: 7/14/99 <br /> Date Analyzed: 7/15/99 <br /> Matrix Spike/Duplicate Matrix Spike Summary <br /> Metals <br /> Sample Name: BATCH QC Units: mg/L(ppm) <br /> Lab Code: S9902085-0022MS, S9902085-0022DMS Basis: NA <br /> Test Notes: <br /> Percent Recovery <br /> CAS Relative <br /> Prep Analysis Spike Level Sample Spike Result Acceptance Percent Result <br /> Analyte Method Method MRL MS DMS Result MS DMS MS DMS Limits Difference Notes <br /> Lead mg/L(ppm) 6010A 0.5 0.50 0.50 ND 0.34 0.35 68 70 75-125 3 A <br /> A Outside of acceptance limits.Because LCS results were acceptable,no further corrective action <br /> was taken. <br /> Approved By: ! Date: ~ �/ <br /> DMS/020597p <br /> U_ .. c <br />