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Sequoia8!9 Striker Avenue Suite 8 <br /> Sacramento CA 95834 <br /> 916)921-9600FAX(( <br /> Analytical FAX 92 1-0100 <br /> www sequoialabs com <br /> Stratus Cnvironmental Project ARCO 2186 Stockton, CA <br /> 3330 Cameron Park Dave, Ste 550 Sampled 6122/00 <br /> Camel on Park, CA yg682 Project dumber N/A Received 6123100 <br /> Protect Manager Jay Johnson Reported 7/5/00 <br /> BTEX by EPA Method 8260A/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result <br /> Result Units Recov Limits 'In Limit % Notes* <br /> Batch 0060286 Date Prepared 6129100 <br /> Blank 0060286_BLK1 Extraction Method EPA 5030B PIT <br /> Benzene 6/29/00 <br /> Toluene ND Ug/1 200 <br /> Ethylbenzene ND 200 <br /> Xylenes(total) ND 200 <br /> Surrogate 1,2-DCA-d4 - ND 2 00 <br /> 500 514 " <br /> Surrogate 7oluene-d8 500 <br /> Surrogate 4-BFB S3 4 60 0-140 103 <br /> 600-140 107 <br /> 50 0 49 4 600-140 98 8 <br /> LCS 0060286-B S I <br /> Benzene 6/29/00 500 <br /> Talaene 53 6 ug/l 700-130 107 <br /> 50 6 544 700-1-30- 109 <br /> Surrogate 1 2-DCA-d4 SO 0 <br /> Sur,agate Toluene-d8 it 52 8 " 600-140 106 <br /> ol 500 52 8 600-140 106 <br /> ate 4-BFB50 0 504 <br /> 600-140 101 <br /> LCS Dup 0060286-BSD1 <br /> Benzene 6129100 500 <br /> Toluene „ 1 6 ugil 700-130 103 250 3 81 <br /> 500 50 6 Su70 0-130 101 25 0 762 <br /> rrogate 12-DC�2-d4 500 <br /> 528 <br /> Surrogate Toluene-d8 500 512 SO 0-140 106 Sup rogate 4-BFB 500 48 0 60 6-140 102 <br /> 600-140 960 <br /> Matrix Smke 0060286-MSI 5006320-05 <br /> Beniene 6/29/00 500 2 06 52 2 ug/1 <br /> Toluene70 0-130 100 <br /> 50 0 ND 49 8 700-130 <br /> Surrogate 1 2-DCA-d4 JO 0 538 6 <br /> " <br /> 99 <br /> Surrogate Toluene-d8 60 0-140 108 <br /> 500 516 <br /> Surrogate 4-BFB " SO 0 <br /> 476 60 0-140 10360 0-140 952 <br /> Matrix Spike Dup 0060286-iMSDI 5006320-05 <br /> Benzene 6/29/00 500 206 <br /> Toluene 500 ND 54 0 ug/l 700-130 104 250 3 92 <br /> Surrogate 1 2-DCA-d4 52 0 700-130 104 250 4 32 <br /> 50 0 56 4 60 0-140 I13 <br /> Surrogate Toluene-d8 " 500 <br /> Surrogate 4-BFB SO 0 54 8 600-140 110 <br /> 50 0 600-140 100 <br /> Batch 0060307 Date Prepared 6130100 <br /> Blank 0060307-BLKI Extraction Method EPA 5030B fP/Tj <br /> 3enzene 6/30/00 <br /> Coluene ND ug/1 200 <br /> TVD 200 <br /> nalytical-Sacramento <br /> 'Defer to end ofreport for text of notes and definitions <br /> Page 8 of 12 <br />