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Table i Groundwater Monitoring Data and Analytical Results Chevron Service Station#9-8264 3775 Tracy Boulevard Tracy,California SPH MTBE EPA :EPAWELL ID/ TOC GWE DTW SPHT Removed TPH-D TPH-G B T E X (EPA 8020) TOG 8270 DATE ) (msl) ) ) ( allons) ( b) ( b) ( b) ( b) b) (p b) (p b) ( b) (p b) MW-3(cont) 03/05/99 1788 888 900 - 63 1 <100 <5 0 <5 0 <5 0 <5 0 2840 06/01/99 1788 830 958 - 1451 612 <0 5 163 82 53 4 3540 -- 08/30/99 1788 810 978 -- <50` <125 <1 25 <1 25 <1 25 <1 25 2830 11/23/99 1788 821 967 - - 82 6' <2500 <25 <25 <25 <25 4380 02/02/00 1788 787 1001 -- 122' <2500 <25 <25 <25 <25 9850 05/18/00 1788 844 944 000 -- <50 <500 46 <5 0 <5 0 <50 4,100 08/11/00 1788 785 1003 000 - <50 <500 <5 0 <50 <5 0 <5 0 4 700 - 12/04/00 INACCESSIBLE -- -- -- -- -- -- - -- -- 02121/01 1788 865 923 000 -- <50 <1,000 <10 <10 <10 <10 11,000 -- - -- MW-4 05/24/96 1789 882 907 -- - <50 <50 <0 5 1 8 <0 5 <0 5 91 08/20/96 1789 797 992 -- <50 <50 <0 5 <0 5 <05 <0 5 120 11105/96 17 89 847 942 - <50 <50 <0 5 <0 5 <0 5 <0 5 33 01/07/97 1789 1005 784 -- <50 <50 <0 5 <0 5 <0 5 <0 5 32 02/07/97 1789 1006 783 - - <10 <50 <0 5 <0 5 <0 5 <0 5 58 05/21/97 1789 8 35 954 - <50 <10 <0 5 <0 5 <0 5 <0 5 140 08/27/97 1789 833 956 110' <50 <0 5 <0 5 <0 5 <0 5 45 11/24197 17 89 861 928 -- - 150' <50 <05 <0 5 <0 5 <0 5 21 02/12/98 1789 11 19 670 - - 50' <100 <1 0 4 5 <1 0 12 190 06/09/98 1789 3 51 1438 -- - 791 <50 <0 5 <0 5 <0 5 <0 5 570 - 08/10/98 1789 846 943 - <50 150 33 1 7 <0 5 2 1 1 100 11/24/98 1789 838 951 - 1001 <50 <0 5 <0 5 <0 5 <0 5 650 03/05/99 1789 9 14 875 - 8471 549 <0 5 <0 5 <0 5 <0 5 622 06/01/99 1789 842 955 010 005 -- -- -- -- -- -- -- 08l30/99 17721 826 948 003 005 -- -- -- -- -- -- -- 11/23/99 1772 846 926 -- -- 45,3001 105,000 590 17,500 3290 19,700 9370 02/02/00 1772 880 892 -- 160,000' 114,000 735 15,500 2920 17,500 11800 -- 9-8264 xls/#386854 3 As of 02/21/01