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Sequoia 680 Chesapeake Drive Redwood City CA 94063 (650)364-9600 FAX(650)364-9233 <br /> 404 N Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(925)988-9673 <br /> Analytical 819 Striker Avenue Suite 8 Sacramento CA 95834 (916)921-9600 FAX(916)921-0100 <br /> 1455 McDowell Blvd North Ste D Petaluma.CA 94954 (707)792-1865 FAX(707)792-0342 <br /> Mft <br /> leinfelder-Stockton Project N/A Sampled 11/5/98 <br /> 825 East Myrtle Street Project Number 20-1311-40) 0I Received 1116/98 <br /> Stockton, CA 95205 Project Manager Tony Martin Reported 11/20/98 <br /> ' Total Purgeable Hydrocarbons(C6-C12) and BTEX by DHS LU1+T/Quality Control <br /> Sequoia Analytical-Sacramento <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> JAnalyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> —Batch 8110094 I2ate_Preparcd 1119/98 Extraction Method EPA 5030E(MeOH) <br /> F—ble <br /> 8110094-BLKI <br /> Hydrocarbons 11/9/98 ND mg/kg 1 00 <br /> Benzene ND 000500 <br /> oluene ND 000500 <br /> Ethylbenzene ND 000500 <br /> Xylenes(total) ND 000500 <br /> f.arrogate a a a-Trti luorotoluene 0200 0 196 600-140 98 0 <br /> Lv-$ 8110094-BSI <br /> Benzene 11/9198 0200 0 216 mg/kg 700-130 108 <br /> ,Toluene 0200 0208 700-130 104 <br /> Ethylbenzene 0200 0204 700-130 102 <br /> Xylenes(total) 0 600 0 611 700-130 102 <br /> 01aaa-Trrflttoratolttene 0200 0 192 600-140 960 r <br /> 8110094-M S 1 5811078-01 <br /> Benzene 11/9/98 0200 ND 0207 mg/kg 600-140 103 <br /> Toluene ii 0200 ND 0201 600-140 101 <br /> Ethylbenzene 0200 ND 0 199 600-140 995 <br /> Xylenes(total) 0 600 ND 0 599 600-140 998 <br /> Surrogate aaa-Trrfluor otoluetre 0200 0 194 600-140 970 <br /> matrix Spike Duo 8110094-MSDI 5811078-01 <br /> Benzene 11/9/98 0200 ND 0204 mg/kg 600-140 102 25 0 0 976 <br /> 1 Toluene 0200 ND 0 188 600-140 940 25 0 718 <br /> Ethylbenzene. 0200 ND 0 196 600-140 98 0 25 0 1 52 <br /> Xylenes(total) 0 600 ND 0 591 600-140 98 5 25 0 131 <br /> Surrogate aaa-Ti tfluoi otohiene 0200 0 194 600-140 970 <br /> Batch 8110110 Date Prepared 11/10/98 Extraction Method EPA 5030B(P/T <br /> Blank 8110110-BLKI <br /> Purgeable Hydrocarbons 11/10/98 ND ug/I 500 <br /> ' Benzene ND 0 500 <br /> Toluene ND 0 500 <br /> Ethylbenzene ND 0 500 <br /> Xylenes(total) ND 0 500 <br /> Sun ogate aaa-Trrf uor otoluene 100 109 600-140 109 <br /> LCS 8110110-BSI <br /> ' Benzene 11/10/98 100 109 ug/l 700-130 109 <br /> TaLuene — -10 0 — 103 700-130 103 <br /> ' 9 Mquoia alytical-Sacramento *Refer to end of report for text of notes and definitions <br /> coda C S",Laboratory Director Page 4 of 7 <br />