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Lancaster Laboratories <br /> 40 Where qualky is a science. <br /> Page 2 of 3 <br /> Lancaster Laboratories Sample No. WW 3768304 <br /> Collected:01/31/2002 13:43 by TC Account Number: 10906 <br /> Submitted: 02/04/2002 09: 15 Chevron Products Company <br /> Reported: 02/19/2002 at 20:49 6001 Bollinger Canyon Rd <br /> Discard: 03/22/2002 Building L PO Box 6004 <br /> MW-10-W-020131 Grab Water San Ramon CA 94583-0904 <br /> Facility# 90557 Job# 386843 GRD <br /> 139 S Center-Stockton T0607700391 MW-10 <br /> SC-10 <br /> As Received <br /> CAT As Received Method Dilution <br /> No. Analysis Name CAS Number Result Detection Units Factor <br /> Limit <br /> was performed to demonstrate precision and accuracy at a batch level. <br /> 08214 BTEX, MTBE (8021► <br /> 00776 Benzene 71--43-2 N.D. # 2.0 ug/l 1 <br /> 00777 Toluene 108-88-3 N.D. 0.50 ug/l 1 <br /> 00776 Ethylbenzene 100-41-4 19. 0.50 ug/1 1 <br /> 00779 Total Xylenes 1330-20-7 N.D. 1.5 ug/l 1 <br /> 00760 Methyl tert-Butyl Ether 1634-04-4 N.D. 2.5 ug/l 1 <br /> The vial submitted for volatile analysis did not have a pH < 2 at the time <br /> of analysis. Due to the volatile nature of the analytes, it is not <br /> appropriate for the laboratory to adjust the pH at the time of sample <br /> receipt. <br /> A site-specific MSD sample was not submitted for the project. A LCS/LCSD <br /> was performed to demonstrate precision and accuracy at a batch level. <br /> Due to the presence of an interferent near its retention time, the normal <br /> reporting limit was not attained for benzene. The <br /> presence or concentration of this compound cannot be determined due to the <br /> presence of this interferent. <br /> 01594 BTEX + Oxygenates by 8260E <br /> 01587 Ethanol 64-17-5 N.D. 500. ug/l 1 <br /> 02010 Methyl t-butyl ether 1634--04-4 N.D. 2. ug/l 1 <br /> 02011 di-Isopropyl ether 108-20-3 N.D. 2. ug/l 1 <br /> 02013 Ethyl t-butyl ether 637-92-3 N.D. 2. ug/l 1 <br /> 02014 t-Amyl methyl ether 994-05-8 N.D. 2. ug/l 1 <br /> 02015 t-Butyl alcohol 75-65--0 N.D. 100. ug/l 1 <br /> 05402 1,2-Dichloroethane 107-06-2 N.D. 2. ug/l 1 <br /> 05412 1,2-Dibromoethane 106-93-4 N.D. 2. ug/l 1 <br /> State of California Lab Certification No. 2116 <br /> #=Laboratory Iv et wdDetec enc ter L borator. 5, C. <br /> t�gj� app} �W, garget detection limit <br /> N.D.=Not d oxrethe$c{sorting Limit <br /> Lancaster,PA 17605-2425 <br /> 717-656-2300 Fax:717.656.2681 2216 Rev.9111100 <br />