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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 /> Pinnacle-C.P. Project: ARCO,5469,Stockton CA Sampled: 2/17/99 <br /> 3939 Cambridge Road, Ste. 220 Project Number: N/A Received: 2/17/99 <br /> Cameron Park,CA 95682 Project Manager: Mark Capps Reported: 2/25,3/3/99 <br /> Total Purgeable Hydrocarbons(C6-C12) and BTEX by DHS LUFT <br /> Sequoia Analytical-Sacramento <br /> Batch Date Date Surrogate Reporting <br /> FAnlyte Number Prepared Analyzed Limits Limit Result Units <br /> Notes* <br /> PL-7(5 ) S202236-01 mil <br /> Purgeable Hydrocarbons 9020246 2/19/99 2/19/99 1.00 ND mg/kg <br /> Benzene <br /> Toluene <br /> 0.00500 ND " <br /> " <br /> Ethylbenzene 0.00500 ND0.00500 ND " <br /> Xylenes(total) <br /> 0.00500 ND <br /> " <br /> Surrogate: a,a,a-Trifrorotoluene 60.0-/40 8 <br /> PL-8(5) 5902236-02 5411 <br /> Purgeable Hydrocarbons 9020246 2/19/99 2/19/99 1.00 9.18 mg/kg I <br /> Benzene 0.00500 0.0609 " <br /> Toluene 0.00500 0.321 <br /> Ethylbenzene 0.00500 0.00768 " <br /> Xylenes(total) 0.00500 1.62 " <br /> Surrogate: a,a,a-Tris luorotoluene 60.0-140 90.5 <br /> PL-8SW( . ') S902236-03 <br /> Purgeable HydrocarbonsSA <br /> 9020246 2/19/99 2/19/99 1.00 1.59 mg/kg 1 <br /> Benzene 0.00500 ND " <br /> Toluene 0.00500 0.00720 " <br /> Ethylbenzene 0.00500 ND " <br /> Xylenes(total) 0.00500 0.263 " <br /> Surrogate: a,a,a-Trifluorotoluene " 60.0-140 84.5 % <br /> SQL S902236-04 mil <br /> Purgeable Hydrocarbons 9020200 2/18/99 2/18/99 1.00 8.06 mg/kg 1 <br /> Benzene 0.00500 ND <br /> Toluene 0.00500 0.228 " <br /> Ethylbenzene 0.00500 0.133 " <br /> Xylenes(total) 0.00500 1.07 " <br /> Surrogate: a,a,a-Tris luo60.0 /40 90.0 <br /> Sequoia Analytical -Sacramento *Refer to end of report for text of notes and definitions. <br /> Ronald W. Bobel,Client Services Representative Page 2 of 9 <br />