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SMITH-EMERY COMPANY <br /> The Full Service Independent Testing laboratory, Established 1904 <br /> 1� 781 East Washington Boulevard • Los Angeles,California 90MI s (213)749-3411 • Fax:(213)746-7228 <br /> I P.O.Box 88053,Hunter's Point Shipyard Bldg.114 • San Francisco,California 94I88 • (415)330.3000 • Fax:(415)922.5864 <br /> $427 East La Palma Avenue • Anaheim,Califomia 92607 • (714)6931026 • Fax.,(714)693-1034 <br /> k <br /> July 26, 1993 <br /> QUALITY CONTROL DATA <br /> MATRIX SPIKE AND DUPLICATE SPIKE <br /> CLIENT: Aqua Geosciences <br /> 7 FILE NO: 72461 <br /> REPORT NO: 31951744 <br /> MATRIX: Soil <br /> + METHOD: EPA 8015M Diesel <br /> LAB NO: 3195174417 <br /> f BATCH NO: 31998015-1 <br /> SPIKE <br /> f' SAMPLE AMOUNT AMOUNT RECOVERY <br /> RESULTS SPIKED RECOVERED ACCEPTANCE <br /> €` p (mom (mg/k&) _(mg/kg) X REC RANGE X) R.P.D. <br /> Diesel (Spike) 1000 362 1234 65 <br /> Diesel (Dup. Spike) 1000 333 1232 70 62-140 7% <br /> E <br /> E <br /> F, - <br /> I: <br /> E, <br /> f <br /> FI <br /> R.P.D. — Relative Percent Difference <br /> ND — None Detected <br /> j'i ALL REPORTS ARK SUBMITTED AS THE CONFIDENTIAL PROPERTY OF CLIENTS.AUTHORIZATION FOR PUSLICATION OF OUR REPORT.CONCLUSIONS,OR EX- <br /> TRACTS FROM OR REGARDING THEM 13 RESERVED PENDING OUR WRITTEN APPRpVAL AS A MUTUAL PROTECTION TO CLIENTS.THE PUBLIC AND OURSELVES- <br />' E� <br />