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Sequoia 879 Striker Avenue,Suite 8 <br /> Sacramento,CA 95$34 <br /> Analytical (916)921-9640 <br /> FAX(916)921-0 100 <br /> www.sequoialabs.com <br /> Delta Environmental Consultants(Cameron Park) Project: ARCO 5469,Stockton,CA <br /> 3330 Cameron Park Dr.Ste 550 Project Number: NIA Reported: <br /> Cameron Park CA,95682 Project Manager: Jay Johnson 07/16/01 15:54 <br /> Total Purgeable Hydrocarbons (C6-C12) and BTEX by DHS LUFT <br /> Sequoia Analytical-Sacramento <br /> Reporting <br /> Analyte Result Limit Units Dilution Batch Prepared Analyzed Method Notes <br /> W7-38' S106453-01 Water Sam Ied:06/28/01 05:20 Received: 06/2810113:40 <br /> Purgeable Hydrocarbons ND 50 ag/1 1 1070118 07/12/01 07/12/01 DHS LUFT <br /> Benzene ND 0.50 <br /> Toluene .NTD 0,50 <br /> Ethylbenzene ND 0.50 <br /> Xylenes(total) ND 0.50 ^ <br /> Surro,eate:a,a,a-Trifluorotoluene 117% 60-140 <br /> MWS-38' S106453-02 Water Sampled:06/28/01 06:09 Received: 06/2810113:40 R-05 <br /> Purgeable Hydrocarbons ND 5000 ug/l 100 1070118 07/12/01 07/16/01 DHS LUFT <br /> Benzene 2300 50 ^ <br /> Toluene ND 50 <br /> Ethylbenzene ND 50 <br /> Xylenes(total) ND 50 <br /> . Surrogate:a,a,a-Trffluorotoluene 107% 60-140 ^ <br /> MW9-38' 5106453-03 Water Sampled:06/2810105:53 Received: 06/28/01 13:40 <br /> Purgeable Hydrocarbons ND 50 ug/1 1 1070118 07/12/01 07/12/01 DHS LUFT <br /> Benzene ND 0.50 " <br /> Toluene ND 0.50 <br /> Ethylbenzene ND 0.50 " <br /> Xylenes(total) ND 0.50 ^ <br /> Surrogate:a,a,a-Trifluorotoluene 114% 60-140 ^ <br /> M'W10-38' 106453-04 Water Sam led:06/28/0106:42 Received:06/28/0113:40 <br /> Purgeable Hydrocarbons ND 50 ug/l 1 1070118 07/12/01 07112/01 DHS LUFT <br /> Benzene 51 0.50 „ <br /> Toluene ND 0.50 „ <br /> Ethylbenzene ND 0.50 ^ <br /> Xylenes(total) ND 0.50 <br /> Surrogate:a,a,a-Trifluorotoluene 99.7% 60-140 " ^ <br /> Sequoia Analytical-Sacramento The results in this report apply to the samples analyzed in accordance with the chain <br /> of custody document This analytical report must be reproduced in its entirety. <br /> Page Page 2 of 7 <br /> —_ <br />