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�le 1 <br /> Groundwater Monitoring Data and Analytical Results <br /> Former Unocal Service Station 1#0123 <br /> 1034 Central Avenue <br /> Tracy, California <br /> [Well ID/ Date DTW GWE TPH(D) TPH(G) B T E X MTBE <br /> TOC* (ft ) (msl) (ppb) (ppb) (ppb) (ppb) (ppb) (PPP) (PPb) <br /> U-1 <br /> 4858 06/02/95 9 51 3907 1,800' 6,200 15 21 38 610 -- <br /> 09/05/95 996 3862 67' 240 06 084 057 39 -- <br /> 12/06/95 959 3899 ND ND ND ND ND ND - <br /> 03/01/96 8 87 3971 120' ND ND ND ND ND -- <br /> 06/10/96 945 39 13 280' 63 ND 14 22 69 -- <br /> 09/12/96 985 38 73 ND ND ND ND ND ND -- <br /> 12/11/96 924 3934 ND 95 ND 095 7 1 48 -- <br /> 03/03/97 907 39 51 ND ND 081 ND 053 ND ND <br /> 06/04/97 943 3915 ND 2 92 15 054 10 37 ND <br /> 09/03/97 978 38 80 ND 2 ND 1 1 ND ND ND ND <br /> 12/02/97 933 3925 72'2 120 1 1 29 89 11 ND <br /> 03/24/98 882 3976 822 a 88 1 6 093 3 8 30 1313 95 <br /> 06/22/98 9 18 3940 ND ND 093 ND 10 ND 4 5/ND' <br /> 09/28/98 965 3893 ND 150 12 ND 2 1 20 9 015 35 <br /> 12/14/98 944 39 14 1302 8 ND 088 ND ND ND ND/NDS <br /> 03/16/99 927 3931 ND ND 077 ND ND ND 45 <br /> U-2 <br /> 4831 06/02/95 9 19 39 12 190' 780 2 1 24 5 9 5 6 -- <br /> 09/05/95 965 3866 ND ND ND 051 ND 077 -- <br /> 12/06/95 930 3901 ND ND ND ND ND ND -- <br /> 03/01/96 859 3972 ND ND ND ND ND ND -- <br /> 06/10/96 9 14 39 17 2601 ND ND 054 10 ND -- <br /> 09/12/96 954 3877 ND ND ND ND ND ND -- <br /> 12/11/96 894 39 37 ND2 160 076 15 89 2 1 -- <br /> 03/03/97 875 39 56 ND 170 2 1 058 15 091 ND <br /> 06/04/97 9 12 39 19 ND 72 14 ND 28 073 ND <br /> 09/03/97 946 38 85 ND ND ND ND ND ND ND <br /> 12/02/97 903 3928 67'2 130 057 12 2 8 27 ND <br /> 03/24/98 850 39 81 ND ND ND ND ND ND 17/ND' <br /> 06/22/98 887 3944 ND ND ND ND ND ND 131ND5 <br /> 09/28/98 933 3898 ND ND ND ND ND ND ND/NDS <br /> 12/14198 912 3919 802 ND ND ND ND ND ND/ND' <br /> 03/16/99 896 3935 ND 73 13 ND 0.59 11 17 <br /> 0123 xIsI#280047 l As of 03/16/99 <br />