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0 <br /> • <br /> 404 N Wiget Lane <br /> Sequoia Walnut Creek CA 94598 <br /> (925)9813-9600 <br /> FAX(925)988-%73 <br /> Analytical wwwsequolalabs corn <br /> Ge er Ryan,Inc -Dublin Protect Chevron <br /> 6747 Sierra Court Suite J Project Number Chevron 49-4275 Reported <br /> Dublin CA,94568 Project Manager Deanna L Harding 06-Jul-00 07 36 <br /> Total Purgeable Hydrocarbons (C6-C12), BTEX and MTBE by DHS LUFT- Quality Control <br /> Sequoia Analytical - San Carlos <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Lunits RPD Lin1t Notes <br /> Batch 0060112-EPA 5030B [PIT] <br /> Blank(0060112-BLK1) Prepared&Analyzed 26-Jun-00 <br /> Purgeable Hydrocarbons as Gasolme ND 500 ug/I <br /> Benzene ND 0 500 " <br /> Toluene ND 0 500 " <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 " <br /> Methyl tent-butyl ether ND 500 " <br /> Surrogate as a-Trrfluorotoluene 107 100 107 700-130 <br /> LCS(0060112-BSI) Prepared&Analyzed 26-Jun-00 <br /> Benzene 855 0 500 ug/1 100 855 700-130 <br /> Toluene 807 0 500 100 807 700-130 <br /> Ethylbenzene 7 80 0 500 100 780 700-130 <br /> A(tow) 234 0 540 " 300 780 700-130 <br /> Surrogate aaa-Trt,Jluorotoluene 995 100 995 700-130 <br /> LCS(0060112-BS2) Prepared&Analyzed 26-Jun-00 <br /> ` Purgeable Hydrocarbons as Gasolme 201 500 uga 250 904 700-130 <br /> Surrogate as a-Trifluorotolueue 105 N100 105 700-130 <br /> Matrix Spike(0060112-MSI) Source L006196-01 Prepared&Analyzed 26-Jun-00 <br /> Benzene 10 6 0 500 119/1 100 ND 106 600-140 <br /> Toluene 101 0 500 " 100 ND 101 600-140 <br /> Ethylb- 101 0 500 100 ND 101 600-140 <br /> Xylenes(total) 302 0 500 300 ND 101 600-140 <br /> Surrogate aaa-ThjImorotolvew 119 100 119 700-130 <br /> Matrix Spike Dup(0060112-MSD1) Source L006196-01 Prepared Analyzed 26-Jun-00 <br /> Benzene 110 0 500 ug/l. 100 ND 110 600-140 370 250 <br /> Toluene 104 0 500 100 ND 104 600-140 2 93 25 0 <br /> Ethylbenzene 10 4 0 500 100 ND 104 600-140 2 93 25 0 <br /> Xylenes(total) 312 0 500 300 ND lo4 60 0-140 2 93 250 <br /> Surrogate a aa-Tnfluorotoluene 110 " 100 110 700-130 <br /> S ala Analytical-Walnut Creek The results in flus report apply to the samples analyzed in accordance with the chafir of <br /> custody document Thu aia6mcal report must be reproduced in its entirety <br /> i <br /> Page 7 of 9 <br />