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Page 1 of 2 <br /> Lancaster Laboratories Sample No WW 3814514 <br /> Collected 04/30/2002 14 15 by DM Account. Number 10869 <br /> Submitted 05/03/2002 09 10 Chevron Products Company <br /> Reported 05/23/2002 at 11 15 6001 Bollinger Canyon Rd <br /> Discard 06/23/2002 Building L, PO Box 6004 <br /> EX--1--W-020430 NA Water San Ramon CA 94583-0904 <br /> Facility# 95775 SIRC <br /> 301 W Kettleman-Lodi T0607700839 EX-1 <br /> WKEX1 <br /> As Received <br /> CAT As Received method Dilution <br /> No Analyeie Name CAB Number Result Detection Oaite Factor <br /> Limit <br /> 01728 TPH-GRO - Waters n a 4,500 50 ug/l 1 <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 /> 0 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 D)rect Injection) 67-56-1 250 200 ug/l 1 <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 BTEX + Oxygenates by 8260B <br /> 01587 Ethanol 64-17-5 N D 250 ug/1 5 <br /> 02010 Methyl t-butyl ether 1634-04-4 15,000 25 ug/l 50 <br /> 02011 di-Isopropyl ether 108-20-3 N D 3 ug/l 5 <br /> 02013 Ethyl t-butyl ether 637-92-3 180 3 ug/1 5 <br /> 02014 t-Amyl methyl ether 994-05-8 130 3 ug/l 5 <br /> 02015 t-Butyl alcohol 75-65-0 7,700 250 ug/1 50 <br /> 05401 Benzene 71-43-2 N D 3 ug/l 5 <br /> 05402 1,2-Dichloroethane 107-06-2 N D 3 ug/1 5 <br /> 05407 Toluene 108-88-3 N D 3 ug/1 5 <br /> 05412 1,2-Dibromoethane 106-93-4 N D 3 ug/1 5 <br /> 05415 Ethylbenzene 100-41-4 N D 3 ug/1 5 <br /> 06310 Xylene (Total) 1330-20-7 N D 3 u1j/1 5 <br /> Poor surrogate recoveries were observed for the GC/MS volatile fraction <br /> The analysis was repeated and poor surrogate recoveries were again observed <br /> indicating a significant matrix effect <br /> The reporting limits for the GUMS volatile compounds were raised <br /> because sample dilution was necessary to bring target compounds into the <br /> I <br />