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Sequoia 819 Striker Avenue,Suite 8 <br /> Sacramento, CA 95834 <br /> (916)921-9600 <br /> Analytical <br /> FAX(916)921-0140 <br /> EMCON-CP <br /> Project: ARCO 21$6,Stockton,CA Sampled: 6117199 <br /> 3939.Cambridge Ave Project Number: 21775-237-002 Received: 6/18/99 <br /> Cameron Park,CA 95652 Project Manager: Mark Capps Reported: 7/1199 <br /> Total Purgeable Hydrocarbons(C6-Cl2),BTEX and MTBE by DHS LUFT <br /> Sequoia Analytical Sacramento <br /> Batch Date Date Surrogate Reporting <br /> Analyte Number Prepared Analyzed Limits Limit Result Units Notes* <br /> 5906319-10 Soil <br /> Benzene 9060355 6/24/99 6/24/99 0.00500 ND mg/kg <br /> Toluene 0.00500 ND " <br /> Ethylbenzene 0.00500 ND " <br /> Xylenes(total) 0.00500 ND <br /> Methy!tent-butyl ether 0.0500 0.0629 " <br /> Surrogate: a,a,a-Trifluorotoluene 60.0-140 103 <br /> I2--3(5 3 S206312-11 SAU <br /> Purgeable Hydrocarbons 9060355 6/24/99 6/24199 1.00 ND mg/kg <br /> Benzene „ <br /> 0.00500 ND " <br /> Toluene <br /> Ethylbenzene 0.00500 0.0155 " <br /> ' <br /> Xylenes(total) 0.00500 ND 0.00500 0.0247 " <br /> Methyl tert-butyl ether 0.050fl ND " <br /> Surrogate: a,a,a-Trifluorotoluene " 60 t?-140 964 <br /> D 4(5 1 S206319-12 Sit <br /> Purgeable Hydrocarbons 9060355 6/24/99 6124/99 1.00 ND mg/kg <br /> Benzene „ <br /> Toluene 0.00500 ND <br /> Ethylbenzene 0.00500 ND " <br /> Xylenes(total) 0.00500 ND0.00500 0.00874 ' <br /> Methyl tert-butyl ether 0,0500 ND " <br /> Surrogate: a,a,a-Trifhsorotoluene 60.0-140 <br /> 99.5 <br /> Purgeable Hydrocarbons S206319-13 SAW 6/24/99 6/24/99 <br /> Benzene' 1.00 ND mg/kg <br /> +� „ . <br /> Toluene „ <br /> 0.00500 ND " <br /> Ethylbenzene „ 0.00500 ND " <br /> Xylenes(total) 0.00500 ND0.00500 ND " <br /> Methyf tent-butyl ether " 0.0500 " <br /> Surrogate: a,a,a-TriND <br /> uorotoluene 60.0-140 9N <br /> �eab` S206319-14 Soil , <br /> Purggeable Hydrocarbons 9060355 6/24/99 6/24/99 1.00 ND mg/[cg <br /> Benzene „ <br /> Toluene 0.00500 ND " <br /> Ethylbenzene 0.00500 ND " <br /> „ <br /> Xylenes(total) 0.00500 ND " <br /> Methyl Cert-butyl ether 0.00500 ND " <br /> 0.0500 0.237 . " <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and defrnitions- <br /> Page 4 of 14 <br />