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TPH-as-Gasoline & Benzene Concentrations vs Time MW-7 <br /> 40 <br /> a <br /> 30 <br /> 3 � <br /> N_ <br /> 20 ■ �, <br /> � L ■ <br /> 10 <br /> U ~ � <br /> G - -- - <br /> Date 1 6188 11/89 3190 6190 10190 4191 2193 5193 8193 11/93 2194 5194 8194 17194 2195 5/95 8195 91!95 2196 5196 <br /> f TPH 20 000 17,000 9 400 111000 0 132,000 15 000 700 8100 1 4 900 5 600 1 7 600 4 400 1 4 900 7 500 5 600 630 8 400 7 200 6 800 <br /> ♦ Benzene 6,900 4,900 1500 1 6200 0 1 9,100 1 1,900 14 1,900 1 790 1 640 1 1,400 1 850 840 1300 1300 110 780 1 710 1 780 <br />