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SMITH-EMERY COMPANY <br /> The Full Service Independent Testing Laboratory, Established 1904 <br /> 781 Fast Washington Boulevard • Los Angeles,California 40021 • (213)749-3411 • Fax:(213)746.7228 <br /> !! P.O.Box 8805M.Hunter's Point Shipyard Bldg.114 • San Francisco,California 94188 • (413)330-3000 • Fax:(415)822.5864 <br /> E 5427 Fast La Palma Avenue • Anaheim,Californla 92W • 4 <br /> (71 )6931026 0 Fax:(714)693-1034 <br /> July 26, 1993 <br /> Quality Contlrol, Report <br /> Matrix Spike and Duplicate Spike <br /> PClient: Aqua Geosciences <br /> i? File No: 72461 <br /> lReport No: 31951744 <br /> I.Matrix: Soil <br /> Method: EPA 8020 <br /> fi Lab No: 3200053329 <br /> Batch No: 32008020-1 <br /> sl <br /> SPIKE <br /> SAMPLE AMOUNT AMOUNT RECOVERY <br /> E RESULTS SPIKED RECOVERED ACCEPTANCE <br /> PARAMETER fug/k&) (ug/kg) (ung) % REC RANGE(%) R.P.D. <br /> Benzene (S) ND 155 121 78 <br /> Benzene (DS) ND 160 133 83 64-125 6% <br /> Toluene (S) 10 155 121. 72 <br /> Toluene (DS) 10 160 137 79 70-118 10% <br /> i' Ethyl Benzene (S) ND 155 131 85 s <br /> Ethyl Benzene (DS) ND 160 147 92 70-121 8% <br /> Xylene (S) ND 465 392 84 <br /> Xylene (DS) ND 480 441 - 92 67-126 9% <br /> M <br /> S - Spike : <br /> ' DS - Duplicate Spike � <br /> R.P.D. - Relative Percent Difference <br /> f� ND - None Detected <br /> ALL REPORTS ARE SUBMITTED A3 THE CONFIDENTIAL PROPERTY OF CLIENTS.AUTHORIZATION FOR PUBLICATION OM OUR REPORT.CONCLUSIONS,OR <br /> EX-TRACTS FROM OR REGAROING THEM IS RESERVED PENDING OUR WRITTEN APPROVAL AS A MUTUAL PROTECTION TO CLIENTS,THE PUBLIC AND OURSELVES. <br />