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mom M M 1=1 M M m4r M mom <br /> TABLE 4 <br /> LABORATORY ANALYTICAL RESULTS -GROUNDWATER EXTRACTION WELL <br /> MARCH 31, 1999 TEST <br /> THRIFY OIL COMPANY STATION No 172 <br /> 7647 PACIFIC AVENUE <br /> STOCKTON, CALIFORNIA <br /> PARK PROJECT No 152811 <br /> EPA METHOD <br /> WELL NUMBER DATE $015M (u€gtL) EPA METHOD$020 fuglL) <br /> SAMPLED <br /> TPH9 Benzene Toluene Eth €benwne I Tota[Xvlenes MTBE <br /> MW-11 (5 Minutes Prior) 31-Mar-99 160,000 33,000 45,000 3,100 22,Q00 3,500 1 3,000 <br /> MW-11 (12 Hours After) 31-Mar-99 97,000 25,000 31,000 2,800 15,000 3,0001*2,300 <br /> ug/L =micrograms per liter, parts per billion, measurement for a liquid <br /> TPHg = Total Petroleum Hydrocarbons as Gasoline <br /> MTBE =methyl tertiary butyl ether <br /> EPA 8260 anaylysis for MTBE <br /> I <br /> A/I 528J 1/xls <br />