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i, 885 Jarvis Drive <br /> ® Sequoia Morgan HIII CA 95037 <br /> (408)776-9600 <br /> FAX Iwo (408)Analytical <br /> www se uoralabscom <br /> 0 <br /> Blaine Tech Services(Chev) Project Chevron 9-4275 Sampled 3/9100 <br /> 1680 Rogers Avenue Project Number 000309-A1 (2905 W Benjamin Holt Dr) Received 3/10/00 <br /> San Jose CA 95112 Project Mana er Scott Boor Reported 415/00 1823 <br /> Total Purgeable Hydrocarbons(C6-02),WEX and MTBE'by DHS LUFT/Quality Contra] <br /> Sequoia Analytical-Morgan Hill <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analvzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch OC23002 Date Prepared 3/23/00 Extraction Method EPA 50308 PIT <br /> Blank OC23002-BLKI <br /> Purgeable Hydrocarbons 3/23/00 ND ug/l 500 <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Methyl tert-butyl ether ND 2 50 <br /> Surrogate a a,o-Trifluorotoluene 100 109 70-130 109 <br /> LCS OC23002-BS 1 <br /> Purgeable Hydrocarbons _ ___ 3/23/00 250 239 ug/l 70-130 95 6 <br /> Sur,ogate a a a-Ti iuorotoluene 11100 __864 70-130 —964 <br /> CS Du OC23002-BSDI <br /> _urgeable Hydrocarbons -_ T_ _ 3/23/00 250 240 _ug/l 70-130 _ 960 25 0 418 <br /> ,Surrogate a a,a-Tiifluorotoluene ID 0 ID 7 - 70-130 107 <br /> Batch OC24002 Date Prepared 3124/00 Extraction Method EPA 5030E [PIT) <br /> Blank OC24002-BLKI - <br /> Purgeable Hydrocarbons 3124/00 ND ug/l 500 <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xvlenes(total) ND 0 500 <br /> Methyl tert-butyl ether ND2 50 <br /> Surrogate a a a-Triuorotoluene <br /> 100 898 "�-----TO 130 <br /> _ 70-130 _898 <br /> LCS OC24002-BSI <br /> Benzene 3/24/00 10 0 106 ug/l 70-130 106 <br /> Toluene 100 927 70-130 92 7 <br /> Ethylbenzene 100 875 70-130 875 <br /> Xylenes(total) 300 263 70-130 877 <br /> Surrogate a,a a-Triuorotoluene 100 947 70-130 94—7 <br /> — <br /> LCS Duo OC24002-BSDI <br /> Benzene 3125/00 10 0 106 ug/l 70-130 106 25 0 <br /> Toluene 100 9 14 70-130 914 25 1 41 <br /> Ethylbenzene 10 0 840 70-130 840 25 4 08 <br /> Sequoia Analytical-Morgan Hill *Refer to end of report for text of notes and definitions <br /> Page 3 of 5 <br />