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Sequoia 819 Striker Avenue,Suite 8 <br /> D <br /> Sacramento,CA 95834 <br /> („- FAX Analytical (916)921-9600 <br /> (9 16)921-0100 <br /> Cambria Environmental Project: Equilon 440 W Charter Way,Stockton Sampled: 6/25/99 <br /> 270 Perkins Street Project Number: 88870583 Received: 6/25/99 <br /> Sonoma,CA 95476 Project Manager: Wayne Chiu Reported: 6/29,7/8-9/99 <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 /> 1AnaIvte Analvzed Level Result Result Units Recov. Limits % Limit % Notes* <br /> Batch: 9060383 Date Prepared: 6/25/99 Extraction Method: EPA 5030B(MeOHI <br /> Blank 9060383-BLKI <br /> Purgeable Hydrocarbons 6/25/99 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-Tris luorotoluene 0.100 0.100 60.0-140 100 <br /> LCE 9060383-BSI <br /> Benzene 6125/99 0.200 0.207 mg/kg 70.0-130 103 <br /> Toluene 0.200 0.224 70.0-130 112 <br /> Ethylbenzene 0.200 0.224 70.0-130 112 <br /> Xylenes(total) 0.600 0.599 70.0-130 99.8 <br /> Surrogate: a,a,a-Trri luorotoluene 0.200 0.101 60.0-140 101 <br /> Matrix Spikeike 9060383-MSI 5906238-04 <br /> Benzene 6/25/99 0.200 ND 0.195 mg/kg 60.0-140 97.5 <br /> Toluene 0.200 ND 0.208 60.0-140 104 <br /> Ethylbenzene 0.200 ND 0.209 60.0-140 105 <br /> Xylenes(total) 0.600 ND 0.563 60.0-140 93.8 <br /> Surrogate: a,a,a-Tris luorotoluene 0.200 0.191 60.0-140 96.0 <br /> Matrix Spike Duo 9060383-MSD1 5906238-04 <br /> Benzene 6/25/99 0.200 ND 0.192 mg/kg 60.0-140 96.0 25.0 1.55 <br /> Toluene 0.200 ND 0.195 60.0-140 97.5 25.0 6.45 <br /> Ethylbenzene 0.200 ND 0.206 60.0-140 103 25.0 1.92 <br /> Xylenes(total) 0.600 ND 0.555 60.0-140 92.5 25.0 1.40 <br /> Surrogate: a,a,a-Trifluorotoluene 0.200 0.193 60.0-140 96.5 <br /> Batch: 9060406 Date Prepared: 6/25/99 Extraction Method: EPA 5030B(MeOH) <br /> Blank 9060406-BLKI <br /> Purgeable Hydrocarbons 6/25/99 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-Tri,J&torotoluene 0.200 0.163 60.0-140 81.5 <br /> LLS 9060406-13SI <br /> Benzene 6/25/99 0.200 0.189 mg/kg 70.0-130 94.5 <br /> Toluene 0.200 0.194 70.0-130 97.0 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions. <br /> Page I I of IS <br />