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r - <br /> 819 Striker Avenue, Suite 8Cp 4O1a <br /> Sacramento, CA 95834 <br /> Analytical (916)921-9500 <br /> fAX(916) 92 l O 100 <br /> Espana Geotechnical Consulting Project: Highway 991 Hammer Lane Interchange Sampled: 10/19/99 <br /> 502 Guiseppe Court, Ste. 11 Project Number. NIA Received: 10/20/99 <br /> Roseville,CA 95678 Proiect Manaecr: Michael Wilson Re oned: 1111199 <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 /> Anal e Analyzed Level Result Result Units Recov.Limits % Limit % Notes' <br /> LCS(continued) 9100278-BS1 <br /> Ethylbenzcne 10/25/99 0.200 0.184 mg/kg 70.0-130 92.0 - <br /> Xylenes(total) 0.600 0.551 70.0-130 91.8 <br /> Surrogate: a,a,o-Trifluorotoluene 0.100 0.185 60.0-140 92.5 <br /> Matrix Spike 9100278-NISI S910255-06 <br /> Benzene 10125/99 0.200 ND 0.201 mg/kg 60.0-140 101 <br /> Toluene 0.200 ND 0.208 60.0-140 104 <br /> Ethylbenzene 0.200 ND 0.200 60.0-140 100 <br /> Xylenes(total) 0.600 ND 0.619 60.0-140 103 <br /> Surrogate: a,a,a-Trifluorotoluene 0.200 0.213 60.0-140 111 <br /> !Matrix Spike Dup 9100278-NISD1 5910255-06 <br /> Benzene 10/25/99 0.200 ND 0.196 mg/kg 60.0-140 98.0 25.0 3.02 <br /> Toluene 0.200 ND 0.200 60.0-140 100 . 25.0 3.92 <br /> Ethvlbenzene 0.200 ND 0.199 60.0-140 99.5 25.0 0.501 <br /> Xylenes(total) 0.600 ND 0.613 60.0-140 102 25.0 0.976 <br /> Surrogate: a,a.a-Trifluorotoluene 0.100 0.121 60.0-140 110 <br /> Sequoia Analytical -Sacramento 'Refer to end of report for test of notes and definitions, <br /> Pace 6 of 8 <br />