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819 Striker Avenue Suite 8 <br /> Sequoia Sacramento C2 95834 <br /> 4 <br /> (916) 921-9600 <br /> IID Analytical FAX 921-0100 <br /> FAX <br /> sequequolalabs tom <br /> OW <br /> EMCON/IT-Cameron Park Project Don Rogers <br /> 3939 Cambridge Road, Ste 220 Project Number 880039 IAIO1050000 Reported <br /> Cameron Park CA,95682 Project Manager Mark Capps 03/01/01 15 35 <br /> Total Purgeable Hydrocarbons (C6-02), BTEX and MTBE by DHS LUFT - Quality Control <br /> Sequoia Analytical - Sacramento <br /> Reporting Spike Source %REC RPD <br /> Analyte Result Limit Units Level Result %REC Limits RPD Limit Notes <br /> Batch 1020253-EPA 5030B (P/T) <br /> Blank(1020253-BLK1) Prepared&Analyzed 02/22/01 <br /> Purgeable Hydrocarbons ND 500 ug/I <br /> Benzene ND 0 500 <br /> Toluene ND 0 500 <br />,Ethylbonzene ND 0 500 " <br /> Xylenes(total) ND 0 500 " <br /> Methyl tert-butyl ether ND 250 " <br /> Surrogate a a o-Tr,uorotoluene 115 100 115 60-140 <br /> LCS(1020253-BSI) Prepared&Analyzed 02/22/01 <br /> Benzene 9 19 0 500 ug/I 100 919 70-130 <br /> Oune 9 86 0 500 100 986 70-130 <br /> benzene 104 0500 100 104 70-130 <br /> nes(total) 27 1 0 500 30 D 90 3 70-130 <br /> Methyl tert-butyl ether 892 250 too 892 70-130 <br /> Surrogate a a a-Trifluorotoluene 00363 100 0 363 60-140 A-01 <br /> Matrix Spike(1020253-MS1) Source 5102249-15 Prepared&Analyzed 02/22/01 <br /> Benzene 841 0 500 ug/I 100 ND 84 1 60-140 <br /> Toluene 907 0 500 ti 100 ND 907 60-140 <br /> Ethylbenzene 960 0 500 100 ND 960 60-140 <br /> Xylenes(total) 256 0 500 300 ND 853 60-140 <br /> Methyl tert-butyl ether 862 250 too ND 862 60-140 <br /> Surrogate a a a-Triuorotoluene 00728 100 0 728 60-140 A-01 <br /> Matrix Spike Dup(1020253-MSD1) Source 5102249-15 Prepared&Analyzed 02/22/01 <br /> Benzene 936 0 500 ug/l 100 ND 936 60-140 107 25 <br /> Toluene 980 0 500 100 ND 990 60-140 774 25 <br /> Ethylbenzene 107 0 500 100 ND 107 60-140 108 25 <br /> Xylenes(total) 286 0 500 300 ND 953 60-140 11 1 25 <br /> Methyl tert-butyl ether 9 17 2 50 100 ND 91 7 60-140 618 25 <br /> Surrogate a a a-Trfuorotoluene 00473 100 0 473 60-140 A-01 <br /> nota Analytical- Sacramento The results in this report apply to the samples analyzed in accordance with the chain of <br /> custody document This analytical report must be reproduced in its entirely <br /> Page 3 of 4 <br />