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h <br /> Sequoia 819 Striker Avenue,Suite 8 <br /> Sacramento,CA 95834 <br /> Aa 1 } a (916)921-9600 <br /> nalytical FAX(916)921-0100 <br /> Espana Geotechnical Consulting Project: Highway 99/Hammer Lane Interchange Sampled: 10/19/99 <br /> 502 Guiseppe Court,Ste. 1 I Project Number: N/A Received: 10/20/99 <br /> Roseville,CA 95678 Proiect Manaeer: Michael Wilson Reported: II/l/99 <br /> Total Purgeable Hydrocarbons(C6-C12)and BTEX by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Anahle Analyzed Lcycl Rcsult Result Units Recov.Limits % Limit % Notcs- <br /> Batch: 9100277 Date Prepared: 10/22/99 Extraction Method:'EPA 5030B(P/T) <br /> Blank 9100277-BLKI <br /> Purgeable Hydrocarbons 10/22/99 ND ug/I 50.0 <br /> Benzene ND 0.500 <br /> Toluene ND 0.500 <br /> Ethylbenzene ND 0.500 <br /> _Xylenes(total) ND 0.500 _ <br /> Surrogate: a,a,a-Tris luoroio/uene °' 10.0 9.04 60.0-140 90.4 <br /> LCS 9100277-BSI <br /> Benzene 10/22/99 10.0 7.87 ug/1 70.0-130 78.7 <br /> Toluene 10.0 8.00 70.0-130 80.0 <br /> Ethylbenzene 10.0 8.11 70.0-130 81.1 <br /> Xylenes(total) 30.0- 24.3 70.0-130 81.0 <br /> Surrogate: a,o,o-Tris luorotoluene 10.0 9.80 60.0-140 98.0 <br /> Matrix Spike 9100277-MS1 S910226-03 <br /> Benzene 10/22/99 10.0 ND 7.55 ug/1 60.0-140 75.5 <br /> Toluene 10.0 ND 7.88 60.0-140 78.8 <br /> Ethylbenzene 10.0 ND 8.03 60.0-140 80.3 <br /> Xylenes(total) 30.0 ND 24.2 60.0-140 80.7 <br /> Surrogate: a,a,a-Tris luoroioluene 10.0 9.04 60.0-140 90.4 <br /> Matrix Spike Dup 9100277-NISD1 5910226-03 <br /> Benzene 10/22/99 10.0 ND 7.1.7 ug/1 60.0-140 71.7 25.0 5.16 <br /> Toluene 10.0 ND 7.15 60.0-140 71.5 25.0 9.71 <br /> Ethylbenzene 10.0 ND 8.13 60.0-140 81.3 25.0 1.24 <br /> Xylenes(total) 30.0 ND 24.4 60.0-140 81.3 25.0 0.741 <br /> Surrogate: a,o,a-Tris luorotoluene 10.0 8.66 60.0-140 86.6 <br /> Batch: 9100278 Date Prepared: 10/26/99 Extraction Method: EPA 503013(MeOH) <br /> Blank 9100278-BLKI <br /> Purgeable Hydrocarbons 10/25/99 ND mg/kg 1.00 <br /> Benzene ND 0.00500 <br /> Toluene ND 0.00500 <br /> Ethylbenzene ND 0.00500 <br /> Xylenes(total) ND 0.00500 <br /> Surrogate: o,o,a-Trifluorotoluene 0.200 0.192 60.0-140 96.0 <br /> LCS 9100278-BS] <br /> Benzene 10/25/99 0.200 0.183 mg/kg 70.0-130 91.5 <br /> Toluene 0.200 0.187 70.0-130 93.5 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definiliau. <br /> Page 5 of 8 <br />