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1455 McDowell Blvd North Ste D <br /> uma CA 9954 <br /> Sequoia Petal(707) 92-1865 <br /> FAX(707) 792-0342 <br /> Analytical www sequoialabs com <br /> Cambria Environmental Project Equiva Sampled 3/27/00 to 3130/00 <br /> 270 Perkins St Project Number 620 W Charter, Stockton Received 3/31100 <br /> Sonoma,CA 95476 Pro ect Mana er Aubrey Cool Reported 4/17100 <br /> Total Petroleum Hydrocarbons as Gasoline and BTEX by EPA 8015M18020M/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 /> LCS 0040115-BS1 <br /> Gasoline 4/6/00 200 1 97 mg_/kg 650-135 985 <br /> Surrogate 4-Bromofluorobenzene 110 600 0 640 650-135 107 <br /> Matrix Spike 0040115-MS1 P004003-22 <br /> Gasoline _ 4/6/00 200 ND 174 mg/kg 650-135 870 <br /> Surrogate 4-Bromofluorobenzene 0 600 0 595 to65 0-135 992 <br /> Matrix Spike Dun 0040115-MSD1 P004003-22 <br /> Gasoline _ 4/6/00 200 ND _ 171 mg/kg 650-135 855 200 174 - <br /> Surrogate 4-Bromofluorobenzene 110 600 0 592 11650-135 98 7 <br /> Batch 0040139 Date Prepared 4/7/00 Extraction Method EPA 5030 soils <br /> Blank 0040139-BLKI <br /> asoIme 4/7/00 ND mg/kg 100 <br /> Is <br /> ND 000500 <br /> aluene ND 000500 <br /> Ethylbenzene ND 000500 <br /> Xylenes(total) ND 000500 <br /> Methyl tert-butyl ether __ ND _ 00500 <br /> Surrogate a a a-Trifluorotoluene 0 600 0 615 650-135 102 <br /> Surrogate 4-Bromofluorobenzene 0 600 0 586 650-135 977 <br /> LCS 0040139-BS1 <br /> Gasoline _ _ _ 4/7/00 __ 200 2 18 mg/kg 650-135 109_ <br /> Surrogate 4-Bromo_fluorobenzene 0 600 0 613 650-135 102 <br /> Matrix Spike 0040139-MS1 P003771-01 <br /> _Gasoline _ 4/7/0_0__ __2 00 ND 351 mg/kg 4 _ 650-135 175 _ 4 <br /> Surrogate 4-Bromofluorobenzene 0 600 0 604 650-135 101 <br /> Matrix Spike Dup 0040139-MSDI P003771-01 <br /> Gasoline 4/7/00 2 00 ND 36.7 mg/kg 650-135 184 20 0 501 _ 4 <br /> Surrogate 4-Bromofluorobenzene to0 600 0 603 It650-135 100 <br /> equoia Analytical-Petaluma *Refer to end of report for text of notes and definitions <br /> Page 18 of 22 <br />