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BC Laboratories, Inc. <br />CASE NARRATIVE <br />COC 10919 Date: 07/23/03 <br />Sample Group Description: Tanks WGMG Page 1 <br />Laboratory Number: 03-05881 <br />03-05881-1 06/26/03 3-871D1U2-01-TK <br />I. HOLDING TIMES <br />Sample was prepared and analyzed within regulatory holding times. <br />II. CALIBRATION <br />Initial calibrations met established criteria. <br />Initial calibration verifications (ICV) met established criteria. <br />Continuing calibration verifications (CCV) met established criteria. <br />BLANKS <br />Initial and continuing calibration blanks were performed at required frequencies. No contaminants were detected <br />in the calibration blanks. <br />Method blanks were prepared and analyzed at required frequencies. No contaminants were detected in the <br />method blanks. <br />IV. LABORATORY CONTROL SAMPLES <br />Laboratory Control Sample (LCS) analyses were performed at required frequencies. All LCS parameters were <br />within quality control (QC) limits. <br />V. MATRIX SPIKES <br />Matrix spike analyses were performed at required frequencies. Accuracy and precision requirements were met. <br />Sincerely, <br />Kim Halbr ok, <br />Project Manager <br />All result listed in this report are for the exclusive use of the submitting party, BC LabOt§tt5rk nJ assumes no responsibility for report alteration, detachment or third party interpretation. <br />4100 Atlas Court * Bakersfield, CA 93308 * (661)327-4911 * Fax(661)327-1918 * www.bclabs.com <br />