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� o POSITIVE <br /> 781 East Washington Blvd , Los Angeles, CA 90021 <br /> IMM , LAB SERVICE (213) 745-5312 FAX (21 3) 745-6372 <br />' February 1, 2000 <br />' QUALITY CONTROL DATA <br /> Matrix Spike and Duplicate Spike <br />' Client Orion Environmental, Inc <br /> File No 73287 <br />' Report No 20000147, 173 <br /> Matrix Soil <br /> Method. EPA 8260B <br /> Lab No 20000147-002 <br />' Batch No 00288260-I <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 /> i <br /> 1, 1-Dichloroethene (S) ND 20 19 7 99 <br /> 1, 1-Dichloroethene (DS) ND 20 18 3 92 39-137 7 <br />' Trichloroethene (S) ND 20 19 8 99 <br /> Trichloroethene (DS) ND 20 19 4 97 78-119 2 <br />' Benzene (S) ND 20 21 0 105 <br /> Benzene (DS) ND 20 21 5 108 58-118 3 <br /> Toluene (S) ND 20 19 9 100 <br /> Toluene (DS) ND 20 20 6 103 63-124 3 <br /> Chlorobenzene (S) ND 20 21 1 106 <br /> Chlorobenzene (DS) ND 20 21 3 107 75-130 1 <br /> Surrogate <br />' Toluene D-8 (S) 20 20 3 102 <br /> Toluene D-8 (DS) 20 20 8 104 75-125 2 <br /> S = Spike <br />' DS = Duplicate Spike <br /> R P D = Relative Percent Difference <br /> ND = None Detected <br />