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.. \.. <br /> 885 Jarvis Drive <br /> Sequoia Morgan Hill,CA95037 <br /> 10" (408)7769600 <br /> .. <br /> Analytical FAX(409)782-6308 <br /> wvW.soquoialabs.00rr <br /> URS Corporation(Il Project: ARCO#434 <br /> 2870 Gateway Oaks Dr.,Ste 300 Project Number: ARCO#434 Reported: <br /> Sacramento CA,95833 Project Manager: Vent Elarth 10/29/02 11:33 <br /> Volatile Organic Compounds by EPA Method 8260B <br /> Sequoia Analytical- Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> COMP)(MLJ0617 011 Soil Sampled: 10/22/02 00.00 Received: 10/22/02 1690 <br /> Tert-butyl alcohol ND 0.050 mg/kg 1 2100345 10/23/02 10/23/02 EPA 8260B <br /> Methyl tert-butyl ether ND 0.0050 " <br /> Di-isopropyl ether ND 0.0050 " <br /> Ethylted-butylether ND 0.0050 ° <br /> Tert-amyl methyl ether ND 0.0050 " <br /> ■. Ethanol ND 0.20 " <br /> Surrogate:1.1-DCA44 91% 60-140 " <br /> SP(5-8 COMP)(MLJ0617-02)Soil Sampled:10/22/02 00.00 Received: 10/22/02 1690 <br /> Tert-butyl alcohol ND 0.050 mg/kg 1 2100345 10/23/02 10/24/02 EPA 8260B <br /> Methyl tert-butyl ether NO 0.0050 " <br /> Di-isopropyl ether ND 0.0050 " <br /> a. Ethyl tert-butyl ether ND 0.0050 " <br /> Tert-amyl methyl ether ND 0.0050 " <br /> Ethanol ND 0.20 " <br /> r„ Surrogate:1.2-DCA-d4 84% 60-140 " <br /> cv(9-12 COMP)(M J0617-03)Soil Sampled: 10/22/02 00.00 Received: 10/22/02 1690 <br /> Tert-butyl alcohol ND 0.050 mg/kg 1 2100345 10/23/02 10/23/02 EPA 82608 <br /> la. Methyl tert-butyl ether NO 0.0050 <br /> Di-isopropyl ether ND 0.0050 " <br /> Ethyl tert-butyl ether ND 0.0050 " <br /> Tert-amyl methyl ether ND 0.0050 " <br /> Ethanol ND 0.20 " <br /> Surrogate:1.2-DCA-d4 92% 60-140 " <br /> r <br /> r <br /> to. Sequoia Analytical-Morgan Hill The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document. This analytical report must be reproduced in its entirety. <br /> 5of11 <br />