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TABLE2 CHEMICAL ANALYSIS-GROUNDWATER Diesel Performance Stockton, California Page 2 of 8 it Re orted in IL Sample ID Date TPHg/ TPHk/ TPHd/ Benzene Toluene Ethyl- Total MTBE GRO KRO DRO benzene X lenes MW2 12/22/99 651 540(2) 750(2) 25.4 0.5 11.9 11 11.3(') Lo 04/20/00 287 178(2) <50 26 0.5 1.26 7.39 5.36(') 06/22/00 359 <50 <50 38.2 8.0 2.35 14.6 10.4(1} 09/22/00 1 446 <50 281(2) 13.2 1.7 2.38 2.71 27.0(') 12/15/00 336 <50 335(2) 2.27 2.5 1.55 2.79 35.4(') 03/27/01 192 <50 158(2) 2.75 <0.500 0.727 0.894 19.90) 06/15/01 400 <100 <50 1.7 1.0 0.9 0.7 30(l) 12/12/01 500 <50 <50 6.5 <0.5 0.6 2 25(4) Lo 10/25/02 260 <50 <50 1.8 <0.5 0.6 1.5 24(4) 01/23/03 190 <50 <50 <0.5 <0.5 0.9 <1.0 21 04/07/03 130 <50 <50 <0.5 <0.5 <0.5 <1.0 8.5p4' 07/09/03 200 <50 <50 1.8 <0.5 0.7 <1.0 13(4) IV 10/20/03 190 <50 <50 1.2 2.5 <0.5 <1.0 21(4' 01/13/04 85 <50 <50 <0.5 <0.5 <0.5 <1.0 14(4) 04/07/04 78 <50 <50 1.2 <0.5 <0.5 <1.0 <2A(4) 07/08/04 76 <50 <50 1.2 <0.5 <0.5 <1.0 11(4) Ldo 10/06/04 71 <50 <50 4.2 0.6 0.9 2 13(4) 01/13/05 120 <50 <50 2 14.0 2.7 29 10(4) F 04/18/05 75 <50 <50 0.8 10.0 1.8 20 32(4) V 07/15/05 102 <50 <50 0.8 3.0 0.5 13 3.4(4) 10/21/05 <50 <50 <50 <0.5 1.2 3.1 0.7 16{4) 01/05/06 <50 <50 <50 <0.5 <0.5 <0.5 <1.0 2 9(4) 04/06/06 100 <50 <50 1 2.2 4.3 12 <0.5 07/25/06 210 <50 <50 3.9 2.5 0.9 7.8 2.4 10/18/06 100 130 <50 1.9 1.7 2.8 8.7 1.3 01/11/07 1,100 <100 510 9.6 16.0 31 95 2.3 04/06/07 3,400 <100 5,000 48 360 110 590 <0.5 07/19/07 2,200 <100 2,000 38 190 24 160 4.3 10/09/07 680 2,700 2,300 15 29 1.8 169 3.4 01/03/08 530 <100 1,800 7.6 16 4.9 80 5.3 04/15/08 620 <100 <100 5.9 12 2.9 95 3.1 07/15/08 930 <50 <50 9.0 14 4.6 130 4.8 10/22/08 80 <50 <50 <0.5 2.0 <0.5 13 5.1 01/09/09 200 <50 <50 <0.5 3.6 <0.5 35 4.7 02/26/10 <50 <50 <50 <0.5 <0.5 <0.5 <1.0 4.4 r� L 16w L S A625TATAB LESlwat-TABL.DOC Lo