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Sequoia 680 Chesapeake Drive Redwood City CA 94063 <br /> 404 N WEget Lane (650)364-96W FAX(650)364-9233 <br /> 819 Striker Avenue Suite$ Walnut Creek CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Sacrame�,,,� Analytical 1455 McDowell Blvd North Ste D eta/ma tCA 94954 CA 95 (916)921-9600 FAX(9 16)79 0100 <br /> E551 Industrial Road (707)792-1865 FAX(707)792-0942 <br /> San Carlos CA 94070.4111 (650)232 9600 FAX(650)232.9612 <br /> MCON-Sac <br /> 1433 N Market Blvd Project WC-Stockton <br /> Project Number 22605-I01 003 Sampled S/25/99 <br /> Sacramento,CA 95834 Project manager Mark Capps <br /> Received 5/25/99 <br /> Re ort A 6/8/99 <br /> Total Purgeable Hydrocarbons(C6-02),BTEX and MTBE by DHS LUFT/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample C <br /> Analyte Analyzed Level Q Reporting Limit Recov RPD RPD <br /> Batch, M60106 Result Result Units Recov Limits % Limit <br /> Notes <br /> auk DateP-rgpared,6/4/99 <br /> Purgeable Hydrocarbons 6/4/99 <br /> Benzene ND ug/I 500 <br /> Toluene ND " 0 500 <br /> Ethylbenzene ND " 0 500 <br /> Xylenes(total) ND " 0 500 <br /> Methyl tert-butyl ether ND 0 500 <br /> Surrogate a,a a-Trfuorotoluene ND 5 00 <br /> 10 0 8 S5 60 0-140 81) S <br /> �`� 90601 R6-RSI <br /> Benzene 6/4/99 <br /> Toluene 100 9 13 ug/] 700-130 91 3 <br /> Ethylbenzene 100 922 700-130 922 <br /> Xylenes(total) l0 0 9 16 700-130 91 6 <br /> ethyl cert-butyl ether „ 30 0 276 700-130 920 <br /> ogate aaa-Trtfuorotoluene 100 948 700-130 948 <br /> 10i 826 600-140 826 <br /> Matrix Spm 90601f16_Mct <br /> Benzene 5905414-01 <br /> 6/4/99 <br /> Toluene 10 0 ND 939 ug/1 600-140 93 9 <br /> Ethylbenzene 100 ND 957 60 0-140 9S 7 <br /> Xylenes(total) 100 ND 960 600-140 96 0 <br /> Methyl tert-butyl ether 300 ND 28 9 600-140 963 <br /> Surrogate a a a-TrIuorotoluene 10 0 ND 9 43 600-140 943 <br /> 10 0 8 67 " 60 0-140 86 7 <br /> LlASLix Spike 12"Benzene Q 60106-msp 11 S905414-01 <br /> 6/4/99 10 0 ND <br /> 963 ug/I 600-140 963 250 2 52 <br /> Toluene 100 <br /> 11 <br /> Ethylbenzene IO 0 ND 977 600-140 97 7 250 2 07 <br /> Xylenes(total) ND 970 " 600-140 <br /> 970 250 ] 04 <br /> 30 0 ND 29 3 <br /> Methyl tent-butyl ether " 100 " 600-140 977 25 0 1 44 <br /> Surrogate a a a Trifuorotoluene ND 106 " 600-140 106 250 11 7 <br /> 10 0 8 68 600-140 86 g <br /> Analytical- Sacramento <br /> *Refer to end of report for text of notes and defmaions <br /> ona[d W Bobel,Citent Service Representative <br /> j Page 3 of 4 <br />