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:1 <br /> M 819 Striker Avenue,Suite 8 <br /> Sequoia Sacramento,916 92 95830 <br /> V i. (916)92i-9b00 <br /> 1 FAX(916)921-0100 <br /> N+ <br /> Analytical •secluatalabs.com <br /> Delta Environmental Consultants(Cameron Park) Project: ARCO 548,Stockton,CA <br /> 3330 Cameron Park Dr. Ste 550 Project Number: NIA Reported: <br /> Cameron Park CA, 95682 ProjectManager: Jay Johnson 09/18/0111:39 <br /> Total Purgeable Hydrocarbons, BTEX and MTBE in Air (pp>i;ity) by DHS LUFT <br /> Sequoia Analytical - Sacramento <br /> Reporting <br /> Analyte Result Limit . Units Dilution Batch Prepared Analyzed Method Notes <br /> INF Total (S1090I9-01)Air Sampled: 09/05/0105,01 Received:09/05/0107:00 <br /> Purgeable Hydrocarbons 250 140 ppmv 50 1090028 09/05/01 09/05/01 DHS LUFT <br /> Benzene ND 0.80 " <br /> Toluene 2.7 0.65 " <br /> Ethylbenzene 1.3 0.60 <br /> Xylenes(total) 26 0.60 " <br /> Methyl tert-butyl ether ___-- ND 7.0 — — ------_ _ _ —__ <br /> Surrogate: a,a,o-Trifluorotoluene 96.0% 60-140 " <br /> INF Cat(5109019-02)Air Sampled: 09/05/0104:58 Received:0910510107:00 <br /> Purgeable Hydrocarbons ND 560 ppmv 200 1090087 09/07/01 09/07/01 DHS LUFT A-01 <br /> Benzene ND 3.2 A-01 <br /> Toluene ND 2.6 A-01 <br /> thylbenzene ND 2.4 A-01 <br /> Penes(total) 15 2.4 A-01 <br /> -Inethyl tert-butyl ether — --.___--ND --- 28 ��_ _'� — " A-01 <br /> Surrogate:a,a,a-Trifluoroioluene 106% 60-140 A-01 <br /> EFF(S109019-03)Air Sampled: 09/05/0104:55 Received: 09/05/0107:00 <br /> Purgeable Hydrocarbons NO 2.4 ppmv 1 1090090 09/06/01 09/06/01 DHS LUFT <br /> Benzene ND 0.016 " <br /> Toluene ND 0.013 <br /> > thylbenzene ND 0.012 " <br /> Xylenes(total) ND 0.012 " <br /> Methyl tert-butyl ether ND 0.14 " <br /> Surrogate:a,a,a-Trifluorotoluene 89,0% 60-140 " <br /> equoia Analytical - Sacramento The results in this report apply to the samples analyzed'in accordance with the chain of <br /> custody document. This analytical report must be reproduced in its entirety- <br /> Pale 3 of 9 <br />