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Striker Avenue,Suite 8 <br /> 4(IN <br /> Sequoia 819 Sacramento,CA 95834 <br /> (916)921-%oo <br /> Iwo Analytical FAX labs c 00 <br /> www seququoiaabs cam <br /> i <br /> Stratus Environmental Pro]ect ARCO 2168, Stockton,CA Sampled 6/22100 <br /> 3330 Cameron Park Drive, Ste 550 PioJect number N/A Received 6/23/00 <br /> Cameron Park,CA 95682 Project Manager Jay Tohnson Reported 7111/00 <br /> BTEX by EPA Method 8260A'Quahty Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 0060286 Date Prepared 6129100 Extraction Method EPA 5030E IP/T] <br /> Blank 0060286-BLK 1 <br /> Benzene 6/29/00 <br /> N <br /> Toluene D ug/l 200 <br /> ND 200 <br /> Ethylbenzene ND 200 <br /> Xylenes(total) ND 200 <br /> Surrogate 1,2-DCA-d4 50 0 j 14 600-140 103 <br /> Surf agate Toluene-d8 50 0 �3 4 600-140 107 <br /> Surrogate 4-BFB j00 494 60 0-140 98 8 <br /> LCS 0060286-BSI <br /> Benzene 6/29100 500 i3 6 ug/l 700-130 107 <br /> Toluene _50 0 54 4 700-130 109 <br /> Surrogate 1 2-DCA-d4 --—- 500 528 600-140 106 — <br /> Surrogate Toluene-d8 500 )2 8 600-140 106 <br /> orate 4-BFB 500 600-140 101 <br /> LCS Dup 0060286-BSD1 <br /> Benzene 6/29/00 500 >1 6 ug/l 700-130 103 25 0 3 81 <br /> Toluene _ _50 0 70 6 700-130 101 25 0 762 <br /> Surrogate 12-DCA-d4 500 528 60 0-140 106 <br /> Surrogate Toluene-d8 Soo .512 r, 600-140 102 <br /> Surrogate 4-BFB 500 480 it 600-140 960 <br /> Matrix Spike 0060286-,DISI S006320-05 <br /> Benzene 6/29/00 500 206 52 2 ug/l 700-130 100 <br /> Toluene _ 500 ND 49 8 700-130 996 <br /> Surrogate 1,2 DCA-d4 " 500 -- 538 600-140 108 — - ------- <br /> Surrogate Toluene-d8 500 516 600-140 103 <br /> Sur)ogate 4-BFB 500 476 600-140 952 <br /> Matrix Spike Dup 0060286-MSDI 5006320-05 <br /> Benzene 6129/00 500 2 06 540 ug/1 700-130 104 25 0 392 <br /> Toluene __ _ 50 0 Nl) 520 700-130 104 2.5 0 432 <br /> Surrogate 12-DCA-d4 50 0 - -- - 56 4 600-140 113 - <br /> Sui i ogate Toluene-d8 500 5�8 660-140 110 <br /> Suri agate 4-BF8 50 0 500 600-140 100 <br /> Batch 0060288 Date Prepared 713/00 Extraction Method EPA 5030B (P/TI <br /> R 1�n k 0060288-BLK 1 — — <br /> Benzene 713/00 ND ug/l 200 <br /> Toluene <br /> iNII <br /> 200 <br /> SjWa Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> Page 10 of 15 <br />