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Mar-02-99 11 : 12A Pitinacle/EMCON P. 12 <br /> 680 Chesapeake Drive 'Redwood Clry,CA 94063 (650)364-9600 FAX(650) 364-9233 <br /> \ Sequoia 404 N.W(get lane walnut Creek.CA 94598 {9751 Me-9600 FAX(925)988-9673 <br /> Analytical 74'95 <br /> 39 Striker Avenue.Suite 8 Sacramento,CA 95534' (907)92t-9600 FAX(936)921-0300 <br /> 1455 McDowelr E3Evd.North,Stc.0 Petaluma,CA 94954` (707)792-1865 FAX(707)797-0342 <br /> Pinnacle-C.P. Project: Arco 548,Stockton,CA it Sampled: 10/26198 to 10127/98 <br /> 3939 Cambridge Road,Ste.220 Project Number: NIA Received: 10/28/98 <br /> Cameron park,CA 95682 Project Managcr. Mark CaRps Reported. 11111198 <br /> Total Purgeable Hydrocarbons(C6-Ci 2),BTEC and MTBE by DHS LUFT <br /> Sequoia Analytical-Sacramento :[ <br /> Batch Daie Date Surrogate Reporting <br /> { <br /> lAnalyte Number Prepared Analyzed Limits Limit Result Units Notes* <br /> AIS-2(26.5)(continued 5810323-05 <br /> Methyl tert-butyl ether 8110023 1112/98 1 112198 5:00 ND mg/kg D <br /> Surrogate: a,a,a-TrifIuorotoluerre 11 11 1160.0-140 111 % <br /> 3 <br /> AS-2 J3 1,S) 5810323-06 F <br /> Purgeable Hydrocarbons 8110037 1113198 1113;98 500 6970 mg/kg I,D <br /> Benzene 2.50 6.78 D <br /> Toluene 2:50 156 D <br /> Ethylbenzene 2.50 165 D <br /> Xylenes(total) 2.50 832 D <br /> Methyl lert-butyl ether 25.0 ND D <br /> Surrogate: a,a,a-TriJluorotoluene 1160.0-140 970 % <br /> AS-2(36.5) S810323-07 <br /> Purgeable Hydrocarbons 8110037 1113198 1113/98 500 3880 rnglkg 1,17 <br /> Benzene " 2,50 11.5 „ D <br /> Toluene 2.50 220 D <br /> Ethylbenzene " 2:50 90.4 D <br /> Xylenes(total) 2.50 456 D <br /> Methyl Cert-butyl ether 25.0 ND D <br /> Surrogate: a,a,a-Trifluorotoluene 1160.0-140 97.5 % <br /> AS-2(5L51 5810323-09 5911 <br /> Purgeable Hydrocarbons 8110437 1113198 1113198 1.00 2.67 mg/kg 2 <br /> Benzene " OA0500 0.0249 " <br /> 1 Toluene 0.00500 0.364 " <br /> Etbylbenzene 0.00500 0.115 <br /> Xylenes(total) " " " .E 0.00500 0.610 " <br /> Methyl tert-butyl ether 0 050fl ND " <br /> Surrogate: a,a,a-Triuorotolueue 60.0-140 101 % <br /> Ji AS-2(61.S) S910323-09 mil <br /> Purgeable Hydrocarbons 8110023 111208 1112198 , 1.00 3.61 mg/kg 2 <br /> Benzene 0.00500 0.0396 " <br /> Toluene 0.00500 0.399 <br /> 0.00500 0.139 <br /> Ethylbenzene 0.005.Q0 0.731 <br /> Xylenes(total) „ <br /> {' Methyl tert-butyl ether O.OSOfl ND <br /> Surrogate; a,a,a-Tris luorO1OI11ene 11 " 60.0-140 109 % <br /> +% S8103;3-IQ <br /> Purgeable Hydrocarbons 8110023 11/2198 1112198 200 2250 mglkg J,D <br /> Sequoia Analytical-5acrMento "Refer 10end of report far text of notes and definitions. <br /> Ronald W Sobel,Client Services Representative Page 3 of 12 <br /> i. <br />