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1551 Industnal Road <br /> Sequoia San Carlos CA 94070-4111 <br /> (650) 232-9600 <br /> Analytical FAX(650) 232-9612 <br /> Gettler-Ryan/Geostrategies(1) Project Tosco(5) Sampled 11/19/99 <br /> 6747 Sierra Court,Suite D Project Number Tosco Sta#6981 Received 11/19/99 <br /> Dublin,CA 94568 Pro ect Manager Steve Carter Reported 11/24/99 <br /> Ya �'�,� '' Total Pturgeable Aydrocar6'6&' CSC Z}paad STEV- DHS LITFTIQuality Col3ttrolE d <br /> -" <br /> �a�l�tlO.IrA1�II$lyt1L'1�1;���IiaL$1'103�� <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> lAnalyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 9110129 Date Prepared- 11/19/99 Extraction Method EPA 5030B IPM <br /> Blank 9110129-BLKI <br /> Purgeable Hydrocarbons as Gasoline 11/19/99 ND ug/1 500 <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) _ ND 0 500 <br /> Surrogate a,a,a-Trifluorotoluene 10 0 945 600-140 945 <br /> LCS 9110129-BSI <br /> Benzene 11/19/99 100 100 ugll 700-130 100 <br /> Toluene 100 101 700-130 101 <br /> Ethylbenzene 100 101 700-130 101 <br /> _Xylenes(total) _ 300 304 700-130 101 _ <br /> 1urrogate a,a,a-Trifluorotoluene 100 105 600-140 105 <br /> LCS 9110129-BS2 <br /> _Purgeable Hydrocarbons as Gasoline 11/19/99 250 240 ug/1 70 0-130 96 0 <br /> Surrogate a,a,a-Tnfluorotoluene 100 10 9 600440 109 <br /> Matrix Spike 9110129-MSI L911141-01 <br /> Purgeable Hydrocarbons as Gasoline 11/20/99 250 ND 231 ug/1 600-140 924 <br /> Surrogate a,a,a-Trifluorotoluene if100 9 82 600-140 98 2 <br /> Matrix Spike Dug 9110129-MSDI L911141-01 <br /> Purgeable hydrocarbons as Gasoline 11/20/99 250 ND 242 ug/l 50 0-140 96 8 25 0 4 65 <br /> Surrogate a,a,a-Trifluorotoluene 100 10 S 600-140 105 0 *Re*Refer to end o re ort or text o notes and definitions <br /> Sequoia Analytical-San Carlos _ f f P f f <br /> Page 4 of 6 <br />