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Lancaster Laboratories Sample No. WW 3814514 <br />Collected:04/30/2002 14:15 by DM <br />Submitted: 05/03/2002 09:10 <br />Reported: 05/23/2002 at 11:15 <br />Discard: 06/23/2002 <br />EX -1-W-020430 NA Water <br />Facility# 95775 SIRC <br />301 W Kettleman-Lodi 70607700839 EX -1 <br />WKEX1 <br />Account Number: 10869 <br />Chevron Products Company <br />6001 Bollinger Canyon Rd <br />Building L, PO Bax 6004 <br />San Ramon CA 94583-0904 <br />As Received <br />CAT As Received Method <br />No. Analysis Name CAS Number Result Detection <br />Limit <br />01728 TPH-GRO - Waters n.a. 4,500. 50. <br />The reported concentration of TPH-GRO does not include MTBE or other <br />gasoline constituents eluting prior to the C6 (n -hexane) TPH-GRO range <br />start time. <br />Site-specific MS/MSD samples were not submitted for the project. A LCS/LCSD <br />was performed to demonstrate precision and accuracy at a batch level. <br />} Due to the nature of -the sample matrix, the surrogate standard recovery is <br />above the range of specifications. <br />01412 Methanol and Ethanol <br />01414 Methanol (by Direct Injection) 67-56-1 250. 200. <br />The surrogate data in the original extract is outside the QC limits. <br />Results from the reextraction are also outside the QC limits, indicating <br />possible matrix interference. <br />01594 <br />HTE% + Oxygenates by 8260B <br />01587 <br />Ethanol <br />64-17-5 <br />N.D. <br />250. <br />02010 <br />Methyl t -butyl ether <br />1634-04-4 <br />15,000, <br />25. <br />02011 <br />di -Isopropyl ether <br />108-20-3 <br />N.D. <br />3. <br />02013 <br />Ethyl t -butyl ether <br />637-92-3 <br />180. <br />3. <br />02014 <br />t -Amyl methyl ether <br />994-05-8 <br />130, <br />3. <br />02015 <br />t -Butyl alcohol <br />75-65-0 <br />7,700_ <br />250, <br />05401 <br />Benzene <br />71-43-2 <br />N.D. <br />3. <br />05402 <br />1,2-Dichloroethane <br />107-06-2 <br />N.D. <br />3. <br />05407 <br />Toluene <br />108-88-3 <br />N.D. <br />3. <br />05412 <br />1,2-Dibromoethane <br />106-93-4 <br />N.D. <br />3. <br />05415 <br />Ethylbenzene <br />100-41-4 <br />N.D. <br />3. <br />06310 <br />Xylene (Total) <br />1330-20-7 <br />N.D. <br />3. <br />Poor surrogate recoveries were observed for <br />the GC/MS <br />volatile fraction. <br />The analysis was repeated and poor surrogate <br />recoveries were again observed <br />indicating a significant matrix <br />effect. <br />The reporting limits for the <br />GC/MS volatile <br />compounds <br />were raised <br />because sample dilution was <br />necessary to bring target <br />compounds into the <br />[hits <br />ug/l <br />ug/l <br />ug/l <br />ug/l <br />ug/l <br />ug/1 <br />ug/1 <br />ug/1 <br />ug/l <br />ug/l <br />ug/1 <br />ug/l <br />ug/1 <br />ug/l <br />Page 1 of 2 <br />Dilution <br />Factor <br />1 <br />1 <br />5 <br />50 <br />5 <br />5 <br />5 <br />50 <br />5 <br />5 <br />5 <br />5 <br />5 <br />5 <br />