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a. © North State Environmental <br /> Chemical Waste Disposal • Trucking • Consulting <br /> CERTIFICATE OF ANALYSIS <br /> Lab No: 96-904 Date Sampled: 12-09-96 <br /> Client: SEMCO/HK2 Date Analyzed: 12-13-96 <br /> Project: 1131 Holly Dr. Tracy, CA Date Reported: 12-17-96 <br /> Benzene, Toluene, Ethylbenzene and Xylenes by Method 8020 <br /> Diesel, Gasoline range hydrocarbons by EPA method 8015M <br /> Ins SAMPLE CLIENT ID ANALYTE METHOD RESULT <br /> NO <br /> 96-904-01 Pit Bottom Benzene 8020 ND <br /> @9' Toluene 8020 ND <br /> SOIL Ethylbenzene 8020 ND <br /> Xylenes 8020 0.014 mg/Kg <br /> Gasoline 8015M ND <br /> Diesel 8015M ND <br /> 96-904-02 SP1-4 Benzene 8020 0.071 mg/Kg <br /> COMP Toluene 8020 0.62 mg/Kg <br /> .. SOIL Ethylbenzene 8020 0.52 mg/Kg <br /> Xylenes 8020 3.3 mg/Kg <br /> Gasoline 8015M 71 mg/Kg <br /> Vas Diesel 8015M 1100 mg/Kg <br /> Quality Control/Quality Assurance Summary-Soil <br /> Inn <br /> Analyte Method Reporting Blank MS/MSD RPD <br /> Limit Recovery i <br /> Benzene 8020 0.005 mg/Kg ND 63 4 <br /> Toluene 8020 0.005 mg/Kg ND 67 11 <br /> Ethylbenzene 8020 0.005 mg/Kg ND 72 9 <br /> Xylenes 8020 0.010 mg/Kg ND 76 10 <br /> Gasoline 8015M 0.5 mg/Kg ND 105 4 <br /> Diesel 8015M 1 g ND 127 2 <br /> ELAP Certificate NO: 1753 <br /> .. <br /> Reviewed proved- <br /> O J�-� <br /> John A. Murphy, Laboratory Director <br /> P.O.Box 5624 • South San Francisco , California 94083 415 . 588 - 2838 FAX 588- 1950 <br />