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s <br /> TABLE 4 <br /> (Continued) <br /> RESULTS OF ANALYSES OF GROUNDWATER SAMPLES <br /> FROM MONITORING WELLS AT 152 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 /> ULT 9 07/23/87 - 31,619 3,954 10,526 1,627 8,358 <br /> 07/03/91 13000 - 610 1,400 310 13,000 <br /> 09/30/91 7500 - 600 570 140 7,500 <br /> 12/31/91 7200 - 520 570 120 7,200 <br /> 03/28/92 17000 - 860 1,000 850 17,000 <br /> 07/08/93 1900 - 240 190 34 240 <br /> ND = Not detectect above the Method Detection Limit <br /> = Not analyzed for the subject analyte <br />