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Sequoia 680 Chesapeake Drive Redwood City,CA 94063 (650)364-9600 FAX(650)364-9Z33 <br /> 404 N.Wiget Lane Walnut Creek,CA 94598 (925)988-9600 FAX(9Z5)988-9673 <br /> 819 Striker Avenue,Suite 8 Sacramento,CA 95834' (916)921-9600 FAX(916)921-0100 <br /> fr Analytical 1455 McDowell Blvd.North.Ste.D Petaluma,CA 94954 (707)792-1865 FAX(707)792-0342 <br /> 1551 industrial Road San Carlos,CA 94070-4111 (650)232-9600 FAX(650)232-9612 <br /> ATC Associates,Inc. Project: ATC Projects Sampled: 3/11199 <br /> 1117 lone palm Ave.,Suite B Project Number: Glover Property 17861.0001 Received: 3112/99 <br /> Modesto,CA 95351 Project Manager_ Jeanne Homsey Reported: 3/29/99 <br /> Total Purgeable Hydrocarbons(C6-C12),BTEX and MTBE by DHS LUFTIQuality Control <br /> Sequoia Analytical-San Carlos <br /> Date Spike Sample QC Reporting Limit Recov. RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov" Limits % Limit % Notes* <br /> Batch: 9030060 Date Prepared: 3/17/99 Extraction Method: EPA 5030E PIT <br /> r=?Blank 9030060-BLKI <br /> Purgeable Hydrocarbons as Gasoline 3117199 ND ugll 50.0 <br /> Benzene " ND IF <br /> 0.500 <br /> Toluene ND " 0.500 <br /> Ethylbenzene ND It 0.500 <br /> Xylenes(total) " ND It <br /> 0.500 <br /> =<_ Methyl tent-butyl ether ND it 5.00 <br /> Surrogate: a,a,a-Trifluorotoluene F, 10.0 11.2 if 70.0-130 112 <br /> LCS 9030060-BS1 <br /> Purgeable Hydrocarbons as Gasoline 3/17199 250 245 ug/1 70.0-130 98.0 <br /> Surrogate: a,a,a-Trifluorotoluene " 10.0 19.3 70.0-130 193 3 <br /> i Matrix Spike 9030060-MS1 L903116-05 <br /> E <br /> '{ugeable Hydrocarbons as Gasoline 3117/99 250 ND 260 ug/1 60.0-140 104 <br /> �:r'`lrirrogate. a,a,a-Trifluorotoluene 10.0 20.4 70.0-130 NR 3 <br /> (' Matrix Spike Dup 9030060-MSDI L903116-05 <br /> t= <br /> Purgeable Hydrocarbons as Gasoline 3/17/99 250 ND 288 ug/1 60.0-140 115 25.0 10.0 <br /> Surrogate: a,a,a-Trifluoro toluene IF 10.0 19.4 70"0-130 194 3 <br /> Batch: 9030064 Date Prepared: 3116199 Extraction Method: EPA 5030B 1PIT1 <br /> -f Blank 9030064-BLK1 <br /> Purgeable Hydrocarbons as Gasoline 3/16/99 ND ug/1 50.0 <br /> Benzene ND 0.500 <br /> Toluene ND 0.500 <br /> Ethylbenzene ND 0.500 <br /> Xylenes(total) ND 0.500 <br /> i Methyl tert-butyl ether ND 5.00 <br /> -=%Surrogate: a,a,a-Triuorotoluene 10.0 11.6 70.0-130 116 <br /> LCS 9030064-BSI <br /> r Benzene 3/16/99 10.0 9.66 ug/1 70.0-130 96.6 <br /> Toluene " 10.0 9.72 " 70.0-130 97,2 <br /> Ethylbenzene IF <br /> 10.0 10.5 IF <br /> 70.0-130 105 <br /> {Xylenes(total) 30.0 29.3 70.0-130 97.7 <br /> Surrogate: a,a,a-Trifluorotoluene 10.0 11.8 70.0-130 118 <br /> Matrix Spike 9030064-MS1 L903092-10 <br /> --;Benzene 3/16/99 10.0 ND 9.71 ug/1 60.0-140 97.1 <br /> Toluene It <br /> 10.0 ND 9.71 IF60.0-140 97.1 <br /> `.`.'quoia Analytical-San Carlos *Refer to end of report for text of notes and definitions. <br /> `1 Page 8 of 11 <br />