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COULAB CORE LABORATORIES <br /> QUA L 1 T Y C O N T R O L R E 5 U L T 5 <br /> Job Number 990877 Report Date 05/31/1999 <br /> ' CUSTOMER IT Group PROJECT Southland Martinez ATTN Shelby Lathrop <br /> QC Type Description Reag Code Lab ID Dilution Factor Date Time <br /> ' MSD Matrix Spike Duplicate 09042404 990877-21 05/27/1999 2230 <br /> Parameter/Test Description QC Result QC Resutt True Value Orig Value Calc Result * Limits <br /> ' Trichloroethene 9 24 9 32 10 000000 C 92 4 74-134 <br /> 1 24 <br /> ' Test Method EPA 82608 Batch 6486 Analyst vz <br /> Method Description VolatiLe Organics (Client List) Units ug/L <br /> ' LCS Laboratory Control Sample 09042404 05/28/1999 1749 <br /> Parameter/Test Description QC Result QC Result True Value Crig Value Calc Result * Limits <br /> Benzene 10 93 10 000000 109 3 _ 67 127 <br /> ' Chlorobenzene 10 40 10 000000 104 0 68 128 <br /> 1,1-Dichloroethane 11 51 10 000000 115 1 66 126 <br /> Toluene 11 38 10 000000 113 8 72-132 <br /> Trichloroethene 11 27 10 000000 112 7 74-134 <br /> 43 Method Blank 05/28/1999 1848 <br /> parameter/Test Description QC Result QC Result True Value Orig Value Catc Result * Limits <br /> AcroLein 0 <br /> Acrylonitrile 0 <br /> Acetone 0 <br /> 'Benzene 0 <br /> Bromobenzene 0 <br /> Bromochloromethane 0 <br /> Bromodichloromethane 0 <br /> Bromoform 0 <br /> Bromomethane 0 <br /> Methyl-t-Butyl Ether (MTBL) 0 <br /> Methyl ethyl ketone (2-Butanone) 0 <br /> n-ButyLbenzene 0 <br /> sec-ButyLbenzene 0 <br /> tort-ButyLbenzene 0 <br /> Carbon disulfide D <br /> Carbon tetrachloride (Freon 10) 0 <br /> Chlorobenzene 0 <br /> 'Chloroethane 0 <br /> 2-ChloroethyLvinyL ether 0 <br /> Chloroform 0 <br /> Chloromethane 0 <br /> 2-Chlorotoluenc D <br /> 4-ChLorototuene 0 <br /> Dibromochloromethane 0 <br /> 1,2-Dibromoethane (EDB) 0 <br /> 1,2-Dibroino-3-chLoropropane 0 <br /> Dibromomethane 0 <br /> 1,2 Dichlorobenzene 0 <br /> 1,3-Dichlorobenzene 0 <br /> oichLorobenzene 0 <br /> y Lorodifluoromethane (Freon 12) 0 <br /> G <br /> Page 40 <br /> * /_/ REC, R=RPD, A=ABS Diff D=/ Diff <br />