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� o POSITIVE <br /> 781 East Washington Blvd , Los Angeles, CA 90021 <br /> LAB SERVICE (213) 745-5312 FAX (213) 745-6372 <br /> 1 <br /> February 1, 2000 <br /> QUALITY CONTROL DATA <br />' Matrix Spike, Duplicate Spike and LCS <br /> CLIENT. Orion Environmental, Inc <br /> FILE NO 73287 <br /> REPORT NO 20000173 <br /> MATRIX. Sall <br />' METHOD• EPA 8015E <br /> LAB NO 20000173-001 <br /> BATCH NO: 00288015B <br /> DATE EXTRACTED 01/28/00 <br /> DATE ANALYZED 01/28/00 <br /> SPIKE <br /> SAMPLE AMOUNT AMOUNT RECOVERY <br /> RESULTS SPIKED RECOVERED ACCEPTANCE <br /> PARAMETER (ug/kg) (ug/kg) (ug/kg) % REC RANGE(%) R P D <br /> Gasoline (S) ND 910 1071 118 <br /> Gasoline (DS) ND 910 973 107 65-135 10 <br /> 1 <br /> LCS AMOUNT RECOVERY <br /> CONCENTRATION RECOVERED ACCEPTANCE <br /> Parameter (ug/kg)_ (ug/kg) % REC RANGE(%) <br /> Gasoline 4550 4760 105 75-125 <br /> i <br /> i <br /> S = Spike <br /> DS = Duplicate Spike <br /> . LCS = Laboratory Control Sample <br /> R P D = Relative Percent Difference <br /> ND = None Detected <br /> f <br />