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' UAL 17 Y C D N T R g L C1 R E S U L T S Job Number.: 992525 Report Date.: 12/14/1999 CUSTOMER: IT Group PROJECT: Southland - Martinez ATTN: Rhonda Teicheira Descri tion Reag. Code Lab ID Dilution Factor Date Time QC Type P LCD Laboratory Control Sample Duplicate 09111502 12/07/1999 1416 Parameter/Test Description DC Result DC Result True Value Orig. Value Calc. Result * Limits F 5191 52.02 50 103.8 39-150 . Benzene 0.2 20 52.11 52.26 50 104.2 32-160 Ethylbenzene 0.3 20 321.84 345.11 250 128.7 50-150 Methyl t-Butyl Ether (MTBE) 7,0 25 51.68 52.09 50 103.4 46-148 Toluene 0.8 20 157.77 158.55 150 105.2 75-125 Xylenes (total) 0.5 20 09102802A 992549-7 12/07/1999 1652 ' MS Matrix Spike - �- - - - Parameter/Test Description OC Result DC Result True Valve Orig. Value Calc. Result * Limits F 50 -- _ _- --- 50 0 101.1 39-1 1*,t,zere 50.57 50 0 102.3 32-160 ylbenzenr 51.14 108.6 50-150 hyl-t-Butyl Ether (MTBE) 271.50 250 0 50.72 50 0 101.4 46-148 Toluene 150 0 103.2 75-125 Xylenes (total) 154.78 09102802A 992549-7 12/07/1999 1717 MSD Matrix Spike Duplicate - Parameter/Test Description OC Result DC Result True Value Orig. Value Calc. Result * Limits F 51.68 50.57 50 0 1113.4 39-150 Benzene 2 20 52.17 51.14 5D 0 104.3 32-160 Ethylbenzene 2 20 290.44 271.50 250 0 116.2 50-150 Methyl t Buryl Ether (MTBE) 7 25 51.57 50.72 50 0 103.1 46-148 Toluene 2 20 157.92 154.78 150 0 105.3 75-125 ' Xylenes (total) 2 20 - -- --..- - Batch.. . ........... 9955 Analyst...: evd Test Method-_.. .. EPA 80218 Units--- - - --------- ug/L ' Method Description.: Volatile Organics -Aromatics _ 12/03/1999 17f}0 FMB Method Blank - - - _ Parameter/Test Description OC Result QC Result True Value Orig. Value Calc. Result * Limits F 6.00 Benzene 0.00 Ethylbenzene 0.00 Methyl t butyl Ether (MTBE) 0.Oc hien, 0.00 ones (total) Page 8 * %=% REC, R=RPD, A=ABS Diff., 0-% Oiff.