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TABLE 4 <br /> (Continues!) <br /> RESULTS OF ANALYSES OF GROUNDWATER SAMPLES <br /> FROM MONITORING WELLS AT 352 and 153 EAST 11th STREET, TRACY <br /> Well Sampling TPH TVH Benzene Toluene Ethyl- Total <br /> No Date [as Gas ) benzene Xylenes <br /> ppb ppb ppb ppb ppb ppb <br /> NAV 7 07/08/93 NO - NO NO NO NO <br /> 10/13/93 ND - NO NO NO NO <br /> 02/25/94 NO - NO NO NO NO <br /> 09/03/94 NO - ND NO NO ND <br /> 02/17/95 ND - NO NO NO ND <br /> 11/15/95 NO - NO NO NO NO <br /> NAV 8 07/08/93 NO - NO NO NO NO <br /> 10/13/93 ND - NO NO NO NO <br /> 02/25/94 NO - ND NO NO ND <br /> 09/03/94 ND - NO NO NO NO <br /> 02/17/95 NO - NO NO NO NO <br /> 11/15/95 NO - NO NO NO NO <br /> ULT 1 04/01/87 - 3,700 13 80 - NO <br /> 07/23/87 671 122 4 0 7 0 24 <br /> 07/03/91 160 3 5 NO 0 7 2 3 <br /> 09/30/91 350 15 NO 0 8 4 0 <br /> 12/31/91 320 _ 13 1 1 0 9 3 7 <br /> 03/28/92 470 11 0 8 0 7 5 0 <br /> 07/08/93 110 - 2 1 0 6 NO 1 3 <br /> ULT 2 04/01/87 - 30,000 1,700 1,800 - 72 <br /> 07/23/87 - 1,418 317 8 98 138 <br /> 07/02/91 4,700 - 98 37 48 100 <br /> 09/30/91 12,000 - 540 44 130 140 <br /> 12/31/91 28,000 - 190 86 140 300 <br /> 03/28/92 4,400 - 80 56 78 150 <br /> 07/08/93 9,800 - 1500 NO 170 150 <br /> ULT 3 04/01/87 - ND NO NO - NO <br /> 07/23/87 - 16 0 12 0 7 0 NO ND <br /> 07/02/91 NO - NO NO NO 0 9 <br /> 09/30/91 NO NO NO NO ND <br /> 12/31/91 NO - ND NO NO NO <br /> 03/28/92 NO - NO NO NO NO <br /> 07/08/93 NO - NO ND NO NO <br /> Continued on next page <br />