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������� ���������� <br /> ~�~~ ^ TRENDS,~�^~~~--r -'`-~ ��~~~~~�~� 45-60' <br /> DATE ppb ppb ppb ppb EW-1 BENZENE TREND <br /> 3/28/03 2888 19200 210000 620 410 40000 y 1.926�+15324 <br /> 6/25/03 2977 18700 196000 620 370 <br /> :6 30000 <br /> CL <br /> 9/25/03 3069 24700 227000 1500 670 0. 1 =1-0.583x 17421 <br /> 12/17103 3152 20400 216000 1100 360 20000 <br /> 3/23/04 3249 25200 222000 1200 550 10000 <br /> 6/11/04 3329 20800 174000 750 380 0 <br /> 12/16/04 3517 20500 168000 1500 690 <br /> 0 1000 2000 3000 4000 5000 6000 <br /> 6/16/06 4064 21000 170000 670 550 <br /> 9/11/06 4151 25000 150000 540 490 DAYS <br /> 12/8/06 4239 30000 140000 1600 2200 1 <br /> 3114/07 4335 22000 190000 460 640 --o—PRE-PUMPING BENZENE --o--POST PUMPING BENZENE <br /> 6/26/07 4439 20000 140000 570 420 <br /> 10/2807 4564 11000 140000 360 330 <br /> 12/1207 4608 5500 78000 250 170 <br /> 3/2808 4715 5400 76000 170 150 <br /> 6/2508 4804 4100 78000 53 150 <br /> 8/2808 4887 3100 53000 47 76 <br /> 12/1808 4880 4300 57000 46 83 <br /> 2/7/09 5031 2400 43000 ND<25 43 <br /> 3/9/10 5426 15000 110000 ND^25 ND<25 200000 <br /> 9/15/11 5981 11000 100000 15 71 150000 <br /> 3/23/12 6171 16000 120000 ND<10 19 100000 <br /> 50000 <br /> 0 1000 2000 3000 4000 5000 6000 <br /> DAYS <br /> --A—PRE-PUMPING TPHg POST PUMPING TPHg <br /> oavfo2 <br />