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a _ ` <br /> + <br /> Sequoia <br /> O�� 819 Striker Avenue, Suite 8 <br /> (DJ qi.l Sacramento.CA 95834 <br /> Analytical <br /> (916)9z 1-9600 <br /> Anal.y}`ical FAX(916)921-0100 <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 Manager: Michael Wilson Reported: 1111/99 i <br /> Total Purgeable Hydrocarbons (C6-C12)and BTEX by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sarnoc QC Reporting Limit Recov. RPD RPD <br /> Anah[c Analyzed Lcycl Rcsult Rcsult . Units Recov, Limits % Limit °o Notcs' <br /> Batch: 9100277 Date Prepared; 1_0122199 Extraction N7ethod: EPA 50306(PIT) <br /> Blank 9100277-BLKI <br /> Purgcable Hydrocarbons 10/22/99 ND uJl 50.0 <br /> Benzene ND 0.500 <br /> Toluene ND 0.500 <br /> Eth)•lbenzene ND 0.500 <br /> _Xylenes(total) ND 0.500 _ <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 9.04 60.0-140 90.4 <br /> LCS 9100277-BSI <br /> Benzene 10/22/99 10.0 7.87 ug/I 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: o,a.a-Trifluoratoluene 10.0 9.80 60.0-1.10 98.0 <br /> Matrix Spike 9100277-NISI 5910226-03 <br /> Benzene 10/22/99 1.0.0 ND 7.55 ug/l 60.0-140 75.5 <br /> Toluene 10.0 ND 7.88 60.0-140 78.8 <br /> Ethyibenzene 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-Triuoroioluene 10.0 9.04 60.0-140 90.4 <br /> i <br /> Matrix Strike Dun 9100277-MSDI S910226-03 <br /> Benzene 10/22/99 10.0 ND 7.17 ugll 60.0-140 71.7 25.0 5.16 <br /> Toluene 10.0 ISD 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 23.4 60.0-140 81.3 25.0 0.741 <br /> Surrogate: a.a.a-Trrfluororoluene 1110.0 8.66 60.0-140 86.6 <br /> Batch: 9100278 Date Prepared: 10/26/99 Extraction Method. EPA 5030E WeOH) <br /> Blank 9100278-BLKI <br /> Purgcablc: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: a,a,a-Trifluor•otoluene 0.200 0.191 60.0-140 96.0 <br /> LCS 9100278-BS 1 <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 Anal)Kical-Sacramento 'Refer to end of report far text of notes and definitions. <br /> Pagc 5 of 3 <br /> S <br />