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a ■ � <br /> l* 819 Striker Avenue, Suite 8 <br /> Sequoia Sacramento,CA 95834 <br /> (916)921-9600 <br /> Analytical FAX (916)92.1-0100 <br /> EMCON/Pinnaele-Cameron Park Project: ARCO 2186,Stockton Sampled: 8123199 to 8126199 <br /> 3939 Cambridge Road,Ste.220 Project Number: NIA Received: 8127199 <br /> Cameron Park,CA 95682 Project Manager: Mark Capps Reported: 9113199 - <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS LUFT/Ouality Control <br /> Sequoia Analytical-Sacrarne.nto <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov. Limits % Limit % Notes* <br /> Blank(confinuto 9080258-BLK1 <br /> Surrogate: a,a,a-Trifluorotoluene 8/30199 , 0.200 0.207 mg/kg 60.0-140 103 <br /> S <br /> 9080258-ESI 0.223 <br /> Benzene 8130199 0.200 0.223 mg/kg 70.0-130 112 <br /> 70.0-130 1 i2 <br /> Toluene 0.200 0.223 <br /> Ethylbenzene 0.200 0.225 70.0-130 112 <br /> Xylenes(total) 0.600 0.603 70.0-130 100 <br /> Methyl tert-butyl ether 0.200 0.188 70.0-130 94.0 <br /> Surrogate: a,a,a-Trifluorotoluene 0.200 0.211 60,0-140 105 <br /> Matrix Spike 2 5 -.M51 5908340-01 <br /> Benzene 8/30/99 0.200 ND 0.198 mg/kg 60.0-140 99.0 <br /> Toluene 0.200 ND 0.195 60.0-140 97.5 <br /> E lbenzene 0.200 ND 0.196 60.0-140 98.0 <br /> es(total) 0.600 ND 0..544 60.0-140 90.7 <br /> yl tert-butyl ether 0.200 ND 0.164 60.0-140 82.0 <br /> Surrogate: a,a,a-Trifluorotoluene <br /> 0.200 0.231 60.0-140 116 <br /> Matrix SpikeJD" 60.0-140 97.5 25.0 1.53 <br /> Benzene 8130199 0.200 ND 0.195 mg/kg <br /> Toluene 0.200 ND 0.195 60.0-140 97.5 25.0 0 <br /> Ethylbenzene " <br /> 0.200 ND 0.196 60.0-140 98.0 25.0 0 <br /> Xylenes(total) " 0.600 ND 0.543 60.0-140 90.5 25.0 0.221 <br /> Methyl tert-butyl ether 0.200 ND 0.164 60.0-140 82.0 25.0 0 <br /> Surrogate: a,a,a-Trifluorotoluene 0.200 0.224 60.0-140 112 <br /> Rotch: 9080259 Date- repared., 8/30199 <br /> Extr ctiou Method: FE <br /> Blank 20$9259-DLK I 1.00 <br /> Purgeable Hydrocarbons 8130199 ND mg/kg <br /> „ ND 0.00500 <br /> Benzene <br /> ND " 0.00500 <br /> Toluene <br /> ND 0.00500 <br /> Ethylbenzene <br /> Xylenes(total) ND O.00SDO <br /> Methyl tent-butyl ether ND 0.0500 <br /> Surrogate: a,a,a-Trifluorotoluene <br /> 0.200 0.168 60.0-140 84.0 <br /> LSA 9084259-�51 <br /> Benzene 8/30/99 0.200 0.176 mg/kg 70.0-130 88.0 <br /> Toluene " 0200 0.171 " 70.0-130 85.5 <br /> Ethylbenzene <br /> 0.204 0.172 70.0-130 86.0 <br /> es(total) 0.600 0.507 70.0-130 .84.5 <br /> n 5 <br /> oia Analytical-Sacramento *Refer to end of report for text of notes and definitions. <br /> Page 13 of 18 <br />