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TABLE 4 <br /> RESULTS OF ANALYSES OF GROUNDWATER SAMPLES <br /> FROM MONITORING WELLS AT 152 and 153 EAST 11th STREET,TRACY,CALIFORNIA <br /> Well Sampling TPN TVH Benzene Toluene Ethyl- Total <br /> No Date (as Gas) benzene Xylenes <br /> PPh ppb ppb ppb ppb ppb <br /> NAV 1 3/18/88 - 3,3000 970 2700 NO 1200 <br /> 1/20/93 NO - NO NO NO 17 <br /> 7/8/93 NO - 1 0 NO NO 2 0 <br /> NAV 2 3/18/88 NO 40 NO NO NO <br /> 1/20/93 ND ND NO NO NO <br /> 7/8/93 ND ND NO NO NO <br /> 10/13/93 ND ND NO NO NO <br /> 2/25/94 ND - ND NO NO NO <br /> NAV 3 3/18/88 - 23,000 520 1,300 2,100 11,000 <br /> 1/20/93 1,300 - 37 20 71 160 <br /> 7/8/93 3,000 - 35 NO 74 130 <br /> NAV 4 3/18/88 - 40,000 900 6,600 1,900 15,000 <br /> 1/20/93 25,000 - 60 1400 420 7,300 <br /> 7/8/93 3,800 24 43 0 9 700 <br /> 10/13/93 570 - 17 10 NO 31 <br /> 2/25/94 1,800 - 3 6 28 74 230 <br /> NAV 5 7/8/93 NO - ND NO NO NO <br /> 10/13/93 NO - NO NO NO NO <br /> 2/25/94 NO - NO NO NO NO <br /> NAV 6 7/8/93 NO - NO NO ND NO <br /> 10/13/93 NO - NO NO NO NO <br /> 2/25/94 NO - NO NO NO NO <br /> NAV 7 7/8/93 NO - NO NO NO NO <br /> 10/13/93 NO - NO NO NO NO <br /> 2/25/94 NO - NO NO NO NO <br /> NAV 8 7/8/93 NO - NO NO NO NO <br /> 10/13/93 NO - NO ND NO NO <br /> 2/25/94 ND - NO NO i NO NO <br /> ULT 1 4/1/87 - 3,700 13 80 - NO <br /> 7/23/87 671 122 4 0 7 0 24 <br /> 7/3/91 160 - 35 NO 0 7 2 3 <br /> Continued on next page <br />