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Sequoia 819 Striker Avenue,Suite 8 <br /> ' Sacramento, CA 95834 <br /> A (916)921-9600 <br /> Analytical <br /> FAX (916)921-0 100 <br /> Emcon-Cameron Park Project: ARCO 2186,Stockton Sampled: 6/24/99 to 6/25/99 <br /> 3939 Cambridge Road,Ste.202 Project'Number: N/A Received: 6/25/99 <br /> Cameron Park,CA 95682 Project Manager: Mark Capps Reported: 7/11/99 <br /> Total Purgeable Hydrocarbons(C6-02),BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> lAnalyte Number Prepared Analyzed Limits Limit Result Units Notes* <br /> PLA(5') S906437-01 <br /> Purgeable Hydrocarbons9060425 6/29/99 6/29/99 500 7040 mg/kg 1,D <br /> Benzene <br /> Toluene <br /> 2.50 5.06 D <br /> Ethylbenzene 2.50 171 D2.50 103 D <br /> Xylenes(total) D <br /> 2.50 588 <br /> Methyl tert-butyl ether 25.0 588 " <br /> D <br /> Surrogate: a,a,a-Trifluorotoluene 60.0-1400 <br /> 92.S /o <br /> U-7(5) 5906437-02 Soil <br /> Purgeable Hydrocarbons 9060425 6/29/99 6/29/99 1.00 ND mg/kg <br /> Benzene 0.00500 ND " <br /> Toluene 0.00500 ND " <br /> Ethylbenzene 0.00500 ND " <br /> Xylenes(total) 0.00500 ND " <br /> Methyl tert-butyl ether 0.0500 ND " <br /> Surrogate: a,a,a-Trifluorotoluene 60.0-140 <br /> 87.5 <br /> P .-S(5') 5906437-03 Sf11 <br /> Purgeable Hydrocarbons 9060425 6/29/99 6/29/99 1.00 ND mg/kg <br /> Benzene 0.00500 ND " <br /> Toluene 0.00500 ND " <br /> Ethylbenzene 0.00500 ND " <br /> Xylenes(total) 0.00500 0.0109 " <br /> Methyl tert-butyl ether 0.0500 ND " <br /> Surrogate: a,a,a-Trifluorotoluene " 60.0-140 <br /> 89.5 <br /> EL-9( ) S206437-04 SAPurgeable Hydrocarbons 9060425 6/29/99 6/29/99 1.00 ND mg/kg <br /> Benzene 0.00500 ND " <br /> Toluene 0.00500 ND " <br /> Ethylbenzene 0.00500 ND " <br /> Xylenes(total) 0.00500 ND " <br /> Methyl tert-butyl ether 0.0500 ND " <br /> Surrogate: a,a,a-Trifhrorotoluene 60.0-140 88.5 % <br /> U- (5) S906437-05 S_" <br /> Purgeable Hydrocarbons 9060425 6/29/99 6/29/99 1.00 ND mg/kg <br /> Benzene 0.00500 ND " <br /> Toluene 0.00500 ND " <br /> Ethylbenzene 0.00500 ND " <br /> Xylenes(total) 0.00500 ND " <br /> Sequoia Analytical-Sacramento *Refer to end of report for tent of notes and definitions. <br /> Page 2 of 16 <br />