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Sequoia 885 Jarvis Drive <br /> ■ ,� Morgan Hili CA 95037 <br /> a lytic a (408776-9604 <br /> Anaqwr <br /> lytical i.i FAX(408)) 782.-6308 <br /> is <br /> Blame Tech Services(Chev) Project Chevron 9-9840(4344 Waterloo Rd Stockton) Sampled 9/20/99 <br /> 1680 Rogers Avenue Project Number 990920-03 Received 9/21/99 <br /> San Jose CA 95112 Project Manager Christine Lilhe Reported 10/6/99 <br /> Total Purgeable Hydrocarbons(C6-C12), BTEX and MTBE by DHS LUFT/Quality Control <br /> Sequoia Analytical-Morgan Hill <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 9090820 Date Prepared 9128/99 Extraction Method EPA 5030E PIT <br /> Blank 9090820-BLK 1 <br /> Purgeable Hydrocarbons 9/28/99 ND ug/l 50 0 <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 250 <br /> Surrogate a a a-Trifluorotoluene 100 936 700-130 936 <br /> LCS 9090820-BSI <br /> Purgeable Hydrocarbons_ _ _ 9/28/99 250 269 ug/l _ 700-130 108 <br /> Surrogate a a a-Trifluorotoluene " 100 908 700-130 908 <br /> ,mdfttrix Spike 9090820-MSI M909693-02 <br /> IIWeable Hyd,ocarbons __ _ 9/28/99 250 ND ____ 253 _ ug/l 60_0-140 101 <br /> Surrogate—a a a-Trrucrotoluene — 100 101 700-130 101 <br /> Matrix Spike Dup 9090820-MSDI M909693-02 <br /> Purgeable Hydrocaibonr _ _9/28/99 250 T ND 208 ug/l_ ____� 600-140 83 2 25 0 193 _ <br /> Surrogate a a,a-Thfluorotoluene 100 850 700-130 85 0 <br /> Batch 9090914 Date Prepared 9130/99 Extraction Method EPA 5030B IP/T1 <br /> Blank 9090914-BLKI <br /> Purgeable Hydrocarbons 9/30199 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 _ _ ND _ " 2 50 _ <br /> Surrogate a a a-Trifluorotoluene 100 8 82 700-130 88 2 <br /> LCS 9090914-BSI <br /> Purgeable Hydrocarbons 9/30/99 250 255 ug/l 700-130 102 <br /> Surrogate a a,o-Trifluorotoluene 11100 9 05 700-130 905 <br /> Matrix Spike 9090914-MSI M909681-01 <br /> _Purgeable Hydrocarbons 9/30/99 250 ND 244 --ug/l----- 600-140 976 <br /> Surrogate a a a-Trifluorotoluene 1110 0 964 700-130 964 <br /> Matrix Spike Dup 9090914-MSDI M909681-01 <br /> eable H)drocarbons 9130/99 250 ND 203 ug/l 600-140 812 250 183 <br /> equoia Anaiytical-Morgan Hill *Refer to end of report for text of notes and definitions <br /> Page 4 of 7 <br />