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1455 McDowell Blvd North Ste D <br /> CA 94954 <br /> Sequoia <br /> Petaluma <br /> 92-1865 <br /> 4DFAX(707) 792-0342 <br /> 1CO Analytical www sequolatabs com <br /> Cambria Environmental Project Equiva Sampled 3/27/00 to 3130100 <br /> 270 Perkins St Project Number 620 W Charter,Stockton Received 3/31/00 <br /> Sonoma,CA 95476 Project Manager Aubrey Cool Reported 4117100 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015M/8020M/Quality Control <br /> Sequoia Analytical-Petaluma <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 0040092 Date Prepared 415100 Extraction Method EPA 5030 soils McOH <br /> Blank 0040092-BLKI <br /> Gasoline 415/00 ND mg/kg 500 <br /> Benzene ND 0 250 <br /> Toluene ND 0 250 <br /> Ethylbenzene ND 0.250 <br /> Xylenes(total) ND 0 250 <br /> Methyl tert-butyl ether _ ND__ _ 250 <br /> Surrogate a a a-Trifluorotoluene 300 326 650-135 109 <br /> Surrogate 4-Bromofluorobenzene 300 278 650-135 92 7 <br /> Blank 0040092-BLK2 <br /> Gasoline 419/00 IND mg/kg 50 0 <br /> Benzene ND 0 250 <br /> oluene ND 0 250 <br /> lWhylbenzene " ND 0 250 <br /> Xylenes(total) ND 0 250 <br /> Methyl tert-butyl ether _ - -ND 250 _ <br /> Surrogate a,a a-Trifluorotoluene 30 0 ND 650-135 ND <br /> Surrogate 4-Bromofluorobenzene 300 28 7 650-135 95 7 <br /> LIES 0040092-BSI <br /> Gasoline 4/6/00100 IO2 mg/kg 65 0-135 102__ <br /> Surrogate 4-Bromofluorobenzene _ 300 301 650-135 100 <br /> LCS 0040092-BS2 <br /> Gasoline 4/9/0_0_ 100_ 92 5 mg/kg 65 0-135 92 5 <br /> Surrogate 4-Bromofluarobenzene 300 289 650-135 963 <br /> Matrix S ike 0040092-MS1 P003650-18 <br /> Gasoline 41_6100 100_ 268 136 mg/kg 650-135_ 109 - <br /> Surrogate 4-Bromofluorobenzene 300 _ 306 65 0-135 102 <br /> Matrix Spike Dup 0040092-MSDI P003650-18 <br /> Gasoline _ 4/6/00 __ 100 268 1_95 mg/kg _ _ 650-135 168 200 42 6 3 <br /> =Surrogate 4-Bromofluorobenzene 30 0 32 0 65 0-135 107 <br /> Batch 0040114 Date Prepared _416100 Extraction Method EPA 5030 waters <br /> Blank 0040114-BLKI <br /> Gasoline 4/6100 ND ugll 500 <br /> Benzene IND 0 500 <br /> oluene ND 0 500 <br /> equoia Analytical-Petaluma *Refer to end of report for text ofnotes and definitions <br /> Page 16 of 22 <br />