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885 Jarvis Drive <br /> Sequoia Morgan Hill CA 95037 <br /> 1 4 1 (408) 776-9600 <br /> Analytical FAX (408) 78Z 6308 <br /> i <br /> Blaine Tech Services(Shell) Project Fquiva Sampled 10/28/99 <br /> 1680 Rogers Avtnue Project Number 2575 Country Club Stockton Rc.c. vtA 10,29199 <br /> San lose CA 95112 Project Manages Leah Da%is Reported 12/3/99 <br /> Total Purgeable Hydrocarbons(C6-C12), BTEX and MTBE by DHS LUFT/Quality Control <br /> Sequoia Analytical- Morgan Ht1I <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Matrix Spike Dup 9110206-MSDI M910AAU-12 <br /> Purgeable Hydrocarbons 11/8/99 250 ND 257 ugrl 600-140 103 25 0 566 <br /> 11 <br /> Surrogate a a a-Traf uorotoluene loll 9.16 700-130 94 6 <br /> Batch 9110266 Date Prepared_ 1118/99 Extraction Method EPA 50306 I PIT <br /> Blank 9110266-BLK I. <br /> Purgeable Hydrocarbons 11/8/99 ND ug/l 500 <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethtilbenzene ND 0 500 <br /> X)lenes(total) ND 0 500 <br /> Meth)l tert-butyl ether ND 2 50 <br /> Surrogate a et a-Trzf uorctoluene /Do 96.1 700-130 96 4 <br /> 9110266-13SI <br /> ne 1 1/8/99 100 10 l d6,/i 70 0-130 101 <br /> To uene 100 100 700-130 100 <br /> Ethvlbenzene l0 0 102 700-130 102 <br /> Xylenes(total) 300 305 700-130 102 <br /> Surrogate z a c-1 rrf, m otohrene "Do 106 700-130 106 <br /> Matrix Spike 9110266-MSI M911010-02 <br /> Benzene 11/9/99 100 ND 101 ug/I 600-140 101 <br /> Toluene 100 ND too 600-140 100 <br /> Ethylbt-nzene 100 ND 102 600-140 102 <br /> Xylenes(total) 300 ND 303 600-140 101 <br /> Surrogate a a a-Trzfuorotoluene 100 8 76 700-130 876 <br /> Matrix Spike_Dup 9110266-MSD1 M911010-02 <br /> Benzene 11/9/99 too ND 106 ug/l 600-140 106 25 0 4 83 <br /> Toluene 100 ND 104 600-140 104 25 0 392 <br /> Ethylbenzene 100 ND 106 600-140 106 25 0 385 <br /> Xylenes(total) 300 ND 3 1 7 600-140 106 250 4 83 <br /> Surrogate a a a-Triuorotoluene loo 857 700-130 85 7 <br /> Sequoia Analytical- Morgan Ili][ *Refer to end of report for text of noles and dejIn'tzom <br /> Page. 18 of 25 <br />